Archive.Lz4. Initial Import.

lz4.mod/common.bmx

@@ -0,0 +1,30 @@
+' Copyright (c) 2022 Bruce A Henderson
+' All rights reserved.
+'
+' Redistribution and use in source and binary forms, with or without
+' modification, are permitted provided that the following conditions are met:
+'     * Redistributions of source code must retain the above copyright
+'       notice, this list of conditions and the following disclaimer.
+'     * Redistributions in binary form must reproduce the above copyright
+'       notice, this list of conditions and the following disclaimer in the
+'       documentation and/or other materials provided with the distribution.
+'
+' THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY
+' EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+' WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+' DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+' DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+' (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+' LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+' ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+' (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+' SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+'
+SuperStrict
+
+Import "source.bmx"
+
+Extern
+	Function archive_write_add_filter_lz4:Int(archive:Byte Ptr)
+	Function archive_read_support_filter_lz4:Int(archive:Byte Ptr)
+End Extern

lz4.mod/examples/example_01.bmx

@@ -0,0 +1,33 @@
+SuperStrict
+
+Framework Archive.Lz4
+Import Archive.Raw
+Import brl.standardio
+
+Local wa:TWriteArchive = New TWriteArchive
+wa.AddFilter(EArchiveFilter.LZ4)
+wa.SetFormat(EArchiveFormat.RAW)
+
+wa.Open("data.lz4")
+
+wa.AddEntry("testdata.txt")
+
+wa.Close()
+
+
+Local entry:TArchiveEntry = New TArchiveEntry
+
+Local ra:TReadArchive = New TReadArchive
+ra.AddFilter(EArchiveFilter.LZ4)
+ra.SetFormat(EArchiveFormat.RAW)
+
+ra.Open("data.lz4")
+
+While ra.ReadNextHeader(entry) = ARCHIVE_OK
+	Local s:String = LoadText(ra.DataStream())
+	Print "String size   : " + s.Length
+	Print "First n chars : " + s[0..17]
+	Print
+Wend
+
+ra.Free()

lz4.mod/examples/example_02.bmx

@@ -0,0 +1,37 @@
+SuperStrict
+
+Framework Archive.Lz4
+Import Archive.Pax
+Import brl.standardio
+
+Local wa:TWriteArchive = New TWriteArchive
+wa.SetFormat(EArchiveFormat.PAX)
+wa.AddFilter(EArchiveFilter.LZ4)
+
+wa.Open("data.tar.lz4")
+
+wa.AddEntry("testdata.txt", "files/testdata.txt")
+wa.AddEntry("테스트_데이터.txt", "files/테스트_데이터.txt")
+wa.AddEntry("", "empty", 0, 0, EArchiveFileType.Dir)
+
+wa.Close()
+
+
+Local entry:TArchiveEntry = New TArchiveEntry
+
+Local ra:TReadArchive = New TReadArchive
+ra.SetFormat(EArchiveFormat.PAX)
+ra.AddFilter(EArchiveFilter.LZ4)
+ra.Open("data.tar.lz4")
+
+While ra.ReadNextHeader(entry) = ARCHIVE_OK
+	Print "File : " + entry.Pathname()
+	Print "Size : " + entry.Size()
+	Local s:String = LoadText(ra.DataStream())
+	Print "String size   : " + s.Length
+	Print "First n chars : " + s[0..17]
+	Print
+Wend
+
+ra.Free()
+

lz4.mod/examples/testdata.txt

@@ -0,0 +1,9 @@
+This is some data we want to compress
+
+
+blah 
+
+blah 
+
+
+blah

lz4.mod/examples/테스트_데이터.txt

@@ -0,0 +1,9 @@
+This is some data we want to compress
+
+
+blah 
+
+blah 
+
+
+blah

lz4.mod/lz4.bmx

@@ -0,0 +1,62 @@
+' Copyright (c) 2022 Bruce A Henderson
+' All rights reserved.
+'
+' Redistribution and use in source and binary forms, with or without
+' modification, are permitted provided that the following conditions are met:
+'     * Redistributions of source code must retain the above copyright
+'       notice, this list of conditions and the following disclaimer.
+'     * Redistributions in binary form must reproduce the above copyright
+'       notice, this list of conditions and the following disclaimer in the
+'       documentation and/or other materials provided with the distribution.
+'
+' THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``AS IS'' AND ANY
+' EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+' WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+' DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+' DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+' (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+' LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+' ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+' (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+' SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+'
+SuperStrict
+
+Module Archive.Lz4
+
+ModuleInfo "CC_OPTS: -DHAVE_LIBLZ4 -DHAVE_LZ4_H -DHAVE_LZ4HC_H"
+ModuleInfo "CC_OPTS: -DHAVE_CONFIG_H -D_FILE_OFFSET_BITS=64"
+?win32
+ModuleInfo "CC_OPTS: -DLIBARCHIVE_STATIC"
+?
+
+Import "common.bmx"
+
+Private
+
+Type TLz4ArchiveFormat Extends TArchiveFormat
+
+	Method AddReadFormat:Int(archive:Byte Ptr, format:EArchiveFormat)
+		Return False
+	End Method
+
+	Method AddWriteFormat:Int(archive:Byte Ptr, format:EArchiveFormat)
+		Return False
+	End Method
+
+	Method AddReadFilter:Int(archive:Byte Ptr, filter:EArchiveFilter)
+		If filter = EArchiveFilter.LZ4 Then
+			archive_read_support_filter_lz4(archive)
+			Return True
+		End If
+	End Method
+
+	Method AddWriteFilter:Int(archive:Byte Ptr, filter:EArchiveFilter)
+		If filter = EArchiveFilter.LZ4 Then
+			archive_write_add_filter_lz4(archive)
+			Return True
+		End If
+	End Method
+End Type
+
+New TLz4ArchiveFormat

lz4.mod/lz4/INSTALL

@@ -0,0 +1,16 @@
+Installation
+=============
+
+```
+make
+make install     # this command may require root access
+```
+
+LZ4's `Makefile` supports standard [Makefile conventions],
+including [staged installs], [redirection], or [command redefinition].
+It is compatible with parallel builds (`-j#`).
+
+[Makefile conventions]: https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html
+[staged installs]: https://www.gnu.org/prep/standards/html_node/DESTDIR.html
+[redirection]: https://www.gnu.org/prep/standards/html_node/Directory-Variables.html
+[command redefinition]: https://www.gnu.org/prep/standards/html_node/Utilities-in-Makefiles.html

lz4.mod/lz4/LICENSE

@@ -0,0 +1,12 @@
+This repository uses 2 different licenses :
+- all files in the `lib` directory use a BSD 2-Clause license
+- all other files use a GPLv2 license, unless explicitly stated otherwise
+
+Relevant license is reminded at the top of each source file,
+and with presence of COPYING or LICENSE file in associated directories.
+
+This model is selected to emphasize that
+files in the `lib` directory are designed to be included into 3rd party applications,
+while all other files, in `programs`, `tests` or `examples`,
+are intended to be used "as is", as part of their intended scenarios,
+with no intention to support 3rd party integration use cases.

lz4.mod/lz4/Makefile

@@ -0,0 +1,234 @@
+# ################################################################
+# LZ4 - Makefile
+# Copyright (C) Yann Collet 2011-2020
+# All rights reserved.
+#
+# BSD license
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice, this
+#   list of conditions and the following disclaimer in the documentation and/or
+#   other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# You can contact the author at :
+#  - LZ4 source repository : https://github.com/lz4/lz4
+#  - LZ4 forum froup : https://groups.google.com/forum/#!forum/lz4c
+# ################################################################
+
+LZ4DIR  = lib
+PRGDIR  = programs
+TESTDIR = tests
+EXDIR   = examples
+FUZZDIR = ossfuzz
+
+include Makefile.inc
+
+
+.PHONY: default
+default: lib-release lz4-release
+
+# silent mode by default; verbose can be triggered by V=1 or VERBOSE=1
+$(V)$(VERBOSE).SILENT:
+
+.PHONY: all
+all: allmost examples manuals build_tests
+
+.PHONY: allmost
+allmost: lib lz4
+
+.PHONY: lib lib-release liblz4.a
+lib: liblz4.a
+lib lib-release liblz4.a:
+	$(MAKE) -C $(LZ4DIR) $@
+
+.PHONY: lz4 lz4-release
+lz4 : liblz4.a
+lz4-release : lib-release
+lz4 lz4-release :
+	$(MAKE) -C $(PRGDIR) $@
+	cp $(PRGDIR)/lz4$(EXT) .
+
+.PHONY: examples
+examples: liblz4.a
+	$(MAKE) -C $(EXDIR) all
+
+.PHONY: manuals
+manuals:
+	$(MAKE) -C contrib/gen_manual $@
+
+.PHONY: build_tests
+build_tests:
+	$(MAKE) -C $(TESTDIR) all
+
+.PHONY: clean
+clean:
+	$(MAKE) -C $(LZ4DIR) $@ > $(VOID)
+	$(MAKE) -C $(PRGDIR) $@ > $(VOID)
+	$(MAKE) -C $(TESTDIR) $@ > $(VOID)
+	$(MAKE) -C $(EXDIR) $@ > $(VOID)
+	$(MAKE) -C $(FUZZDIR) $@ > $(VOID)
+	$(MAKE) -C contrib/gen_manual $@ > $(VOID)
+	$(RM) lz4$(EXT)
+	@echo Cleaning completed
+
+
+#-----------------------------------------------------------------------------
+# make install is validated only for Linux, OSX, BSD, Hurd and Solaris targets
+#-----------------------------------------------------------------------------
+ifeq ($(POSIX_ENV),Yes)
+HOST_OS = POSIX
+
+.PHONY: install uninstall
+install uninstall:
+	$(MAKE) -C $(LZ4DIR) $@
+	$(MAKE) -C $(PRGDIR) $@
+
+.PHONY: travis-install
+travis-install:
+	$(MAKE) -j1 install DESTDIR=~/install_test_dir
+
+.PHONY: cmake
+cmake:
+	cd build/cmake; cmake $(CMAKE_PARAMS) CMakeLists.txt; $(MAKE)
+
+endif   # POSIX_ENV
+
+
+ifneq (,$(filter MSYS%,$(shell $(UNAME))))
+HOST_OS = MSYS
+CMAKE_PARAMS = -G"MSYS Makefiles"
+endif
+
+
+#------------------------------------------------------------------------
+#make tests validated only for MSYS, Linux, OSX, kFreeBSD and Hurd targets
+#------------------------------------------------------------------------
+ifneq (,$(filter $(HOST_OS),MSYS POSIX))
+
+.PHONY: list
+list:
+	$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | awk -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | sort | egrep -v -e '^[^[:alnum:]]' -e '^$@$$' | xargs
+
+.PHONY: check
+check:
+	$(MAKE) -C $(TESTDIR) test-lz4-essentials
+
+.PHONY: test
+test:
+	$(MAKE) -C $(TESTDIR) $@
+	$(MAKE) -C $(EXDIR) $@
+
+.PHONY: clangtest
+clangtest: CFLAGS += -Werror -Wconversion -Wno-sign-conversion
+clangtest: CC = clang
+clangtest: clean
+	$(CC) -v
+	$(MAKE) -C $(LZ4DIR)  all CC=$(CC)
+	$(MAKE) -C $(PRGDIR)  all CC=$(CC)
+	$(MAKE) -C $(TESTDIR) all CC=$(CC)
+
+.PHONY: clangtest-native
+clangtest-native: CFLAGS = -O3 -Werror -Wconversion -Wno-sign-conversion
+clangtest-native: clean
+	clang -v
+	$(MAKE) -C $(LZ4DIR)  all    CC=clang
+	$(MAKE) -C $(PRGDIR)  native CC=clang
+	$(MAKE) -C $(TESTDIR) native CC=clang
+
+.PHONY: usan
+usan: CC      = clang
+usan: CFLAGS  = -O3 -g -fsanitize=undefined -fno-sanitize-recover=undefined -fsanitize-recover=pointer-overflow
+usan: LDFLAGS = $(CFLAGS)
+usan: clean
+	CC=$(CC) CFLAGS='$(CFLAGS)' LDFLAGS='$(LDFLAGS)' $(MAKE) test FUZZER_TIME="-T30s" NB_LOOPS=-i1
+
+.PHONY: usan32
+usan32: CFLAGS = -m32 -O3 -g -fsanitize=undefined
+usan32: LDFLAGS = $(CFLAGS)
+usan32: clean
+	$(MAKE) test FUZZER_TIME="-T30s" NB_LOOPS=-i1
+
+SCANBUILD ?= scan-build
+SCANBUILD_FLAGS += --status-bugs -v --force-analyze-debug-code
+.PHONY: staticAnalyze
+staticAnalyze: clean
+	CPPFLAGS=-DLZ4_DEBUG=1 CFLAGS=-g $(SCANBUILD) $(SCANBUILD_FLAGS) $(MAKE) all V=1 DEBUGLEVEL=1
+
+.PHONY: cppcheck
+cppcheck:
+	cppcheck . --force --enable=warning,portability,performance,style --error-exitcode=1 > /dev/null
+
+.PHONY: platformTest
+platformTest: clean
+	@echo "\n ---- test lz4 with $(CC) compiler ----"
+	$(CC) -v
+	CFLAGS="-O3 -Werror"         $(MAKE) -C $(LZ4DIR) all
+	CFLAGS="-O3 -Werror -static" $(MAKE) -C $(PRGDIR) all
+	CFLAGS="-O3 -Werror -static" $(MAKE) -C $(TESTDIR) all
+	$(MAKE) -C $(TESTDIR) test-platform
+
+.PHONY: versionsTest
+versionsTest: clean
+	$(MAKE) -C $(TESTDIR) $@
+
+.PHONY: cxxtest cxx32test
+cxxtest cxx32test: CC := "$(CXX) -Wno-deprecated"
+cxxtest cxx32test: CFLAGS = -O3 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Werror
+cxx32test: CFLAGS += -m32
+cxxtest cxx32test: clean
+	$(CXX) -v
+	CC=$(CC) $(MAKE) -C $(LZ4DIR)  all CFLAGS="$(CFLAGS)"
+	CC=$(CC) $(MAKE) -C $(PRGDIR)  all CFLAGS="$(CFLAGS)"
+	CC=$(CC) $(MAKE) -C $(TESTDIR) all CFLAGS="$(CFLAGS)"
+
+.PHONY: cxx17build
+cxx17build : CC = "$(CXX) -Wno-deprecated"
+cxx17build : CFLAGS = -std=c++17 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Werror -pedantic
+cxx17build : clean
+	$(CXX) -v
+	CC=$(CC) $(MAKE) -C $(LZ4DIR)  all CFLAGS="$(CFLAGS)"
+	CC=$(CC) $(MAKE) -C $(PRGDIR)  all CFLAGS="$(CFLAGS)"
+	CC=$(CC) $(MAKE) -C $(TESTDIR) all CFLAGS="$(CFLAGS)"
+
+.PHONY: ctocpptest
+ctocpptest: LIBCC="$(CC)"
+ctocpptest: TESTCC="$(CXX)"
+ctocpptest: CFLAGS=
+ctocpptest: clean
+	CC=$(LIBCC)  $(MAKE) -C $(LZ4DIR)  CFLAGS="$(CFLAGS)" all
+	CC=$(LIBCC)  $(MAKE) -C $(TESTDIR) CFLAGS="$(CFLAGS)" lz4.o lz4hc.o lz4frame.o
+	CC=$(TESTCC) $(MAKE) -C $(TESTDIR) CFLAGS="$(CFLAGS)" all
+
+.PHONY: c_standards
+c_standards: clean c_standards_c11 c_standards_c99 c_standards_c90
+
+.PHONY: c_standards_c90
+c_standards_c90: clean
+	$(MAKE) clean; CFLAGS="-std=c90   -Werror -pedantic -Wno-long-long -Wno-variadic-macros" $(MAKE) allmost
+	$(MAKE) clean; CFLAGS="-std=gnu90 -Werror -pedantic -Wno-long-long -Wno-variadic-macros" $(MAKE) allmost
+
+.PHONY: c_standards_c99
+c_standards_c99: clean
+	$(MAKE) clean; CFLAGS="-std=c99   -Werror -pedantic" $(MAKE) all
+	$(MAKE) clean; CFLAGS="-std=gnu99 -Werror -pedantic" $(MAKE) all
+
+.PHONY: c_standards_c11
+c_standards_c11: clean
+	$(MAKE) clean; CFLAGS="-std=c11   -Werror" $(MAKE) all
+
+endif   # MSYS POSIX

lz4.mod/lz4/Makefile.inc

@@ -0,0 +1,111 @@
+# ################################################################
+# LZ4 - Makefile common definitions
+# Copyright (C) Yann Collet 2020
+# All rights reserved.
+#
+# BSD license
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice, this
+#   list of conditions and the following disclaimer in the documentation and/or
+#   other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# You can contact the author at :
+#  - LZ4 source repository : https://github.com/lz4/lz4
+#  - LZ4 forum froup : https://groups.google.com/forum/#!forum/lz4c
+# ################################################################
+
+UNAME ?= uname
+
+TARGET_OS ?= $(shell $(UNAME))
+ifeq ($(TARGET_OS),)
+  TARGET_OS ?= $(OS)
+endif
+
+ifneq (,$(filter Windows%,$(TARGET_OS)))
+LIBLZ4 = liblz4-$(LIBVER_MAJOR)
+LIBLZ4_EXP = liblz4.lib
+WINBASED   = yes
+else
+LIBLZ4_EXP = liblz4.dll.a
+  ifneq (,$(filter MINGW%,$(TARGET_OS)))
+LIBLZ4     = liblz4
+WINBASED   = yes
+  else
+    ifneq (,$(filter MSYS%,$(TARGET_OS)))
+LIBLZ4     = msys-lz4-$(LIBVER_MAJOR)
+WINBASED   = yes
+    else
+      ifneq (,$(filter CYGWIN%,$(TARGET_OS)))
+LIBLZ4     = cyglz4-$(LIBVER_MAJOR)
+WINBASED   = yes
+      else
+LIBLZ4     = liblz4.$(SHARED_EXT_VER)
+WINBASED   = no
+EXT        =
+      endif
+    endif
+  endif
+endif
+
+ifeq ($(WINBASED),yes)
+EXT        = .exe
+WINDRES    = windres
+endif
+
+#determine if dev/nul based on host environment
+ifneq (,$(filter MINGW% MSYS% CYGWIN%,$(shell $(UNAME))))
+VOID := /dev/null
+else
+  ifneq (,$(filter Windows%,$(OS)))
+VOID := nul
+  else
+VOID  := /dev/null
+  endif
+endif
+
+ifneq (,$(filter Linux Darwin GNU/kFreeBSD GNU OpenBSD FreeBSD NetBSD DragonFly SunOS Haiku MidnightBSD MINGW% CYGWIN% MSYS%,$(shell $(UNAME))))
+POSIX_ENV = Yes
+else
+POSIX_ENV = No
+endif
+
+# Avoid symlinks when targeting Windows or building on a Windows host
+ifeq ($(WINBASED),yes)
+LN_SF = cp -p
+else
+  ifneq (,$(filter MINGW% MSYS% CYGWIN%,$(shell $(UNAME))))
+LN_SF = cp -p
+  else
+    ifneq (,$(filter Windows%,$(OS)))
+LN_SF = cp -p
+    else
+LN_SF  = ln -sf
+    endif
+  endif
+endif
+
+ifneq (,$(filter $(shell $(UNAME)),SunOS))
+INSTALL ?= ginstall
+else
+INSTALL ?= install
+endif
+
+INSTALL_PROGRAM ?= $(INSTALL) -m 755
+INSTALL_DATA    ?= $(INSTALL) -m 644
+INSTALL_DIR     ?= $(INSTALL) -d -m 755

lz4.mod/lz4/NEWS

@@ -0,0 +1,320 @@
+v1.9.3
+perf: highly improved speed in kernel space, by @terrelln
+perf: faster speed with Visual Studio, thanks to @wolfpld and @remittor
+perf: improved dictionary compression speed, by @felixhandte
+perf: fixed LZ4_compress_HC_destSize() ratio, detected by @hsiangkao
+perf: reduced stack usage in high compression mode, by @Yanpas
+api : LZ4_decompress_safe_partial() supports unknown compressed size, requested by @jfkthame
+api : improved LZ4F_compressBound() with automatic flushing, by Christopher Harvie
+api : can (de)compress to/from NULL without UBs
+api : fix alignment test on 32-bit systems (state initialization)
+api : fix LZ4_saveDictHC() in corner case scenario, detected by @IgorKorkin
+cli : `-l` legacy format is now compatible with `-m` multiple files, by Filipe Calasans
+cli : benchmark mode supports dictionary, by @rkoradi
+cli : fix --fast with large argument, detected by @picoHz
+build: link to user-defined memory functions with LZ4_USER_MEMORY_FUNCTIONS, suggested by Yuriy Levchenko
+build: contrib/cmake_unofficial/ moved to build/cmake/
+build: visual/* moved to build/
+build: updated meson script, by @neheb
+build: tinycc support, by Anton Kochkov
+install: Haiku support, by Jerome Duval
+doc : updated LZ4 frame format, clarify EndMark
+
+v1.9.2
+fix : out-of-bound read in exceptional circumstances when using decompress_partial(), by @terrelln
+fix : slim opportunity for out-of-bound write with compress_fast() with a large enough input and when providing an output smaller than recommended (< LZ4_compressBound(inputSize)), by @terrelln
+fix : rare data corruption bug with LZ4_compress_destSize(), by @terrelln
+fix : data corruption bug when Streaming with an Attached Dict in HC Mode, by @felixhandte
+perf: enable LZ4_FAST_DEC_LOOP on aarch64/GCC by default, by @prekageo
+perf: improved lz4frame streaming API speed, by @dreambottle
+perf: speed up lz4hc on slow patterns when using external dictionary, by @terrelln
+api: better in-place decompression and compression support
+cli : --list supports multi-frames files, by @gstedman
+cli: --version outputs to stdout
+cli : add option --best as an alias of -12 , by @Low-power
+misc: Integration into oss-fuzz by @cmeister2, expanded list of scenarios by @terrelln
+
+v1.9.1
+fix : decompression functions were reading a few bytes beyond input size (introduced in v1.9.0, reported by @ppodolsky and @danlark1)
+api : fix : lz4frame initializers compatibility with c++, reported by @degski
+cli : added command --list, based on a patch by @gabrielstedman
+build: improved Windows build, by @JPeterMugaas
+build: AIX, by Norman Green
+
+v1.9.0
+perf: large decompression speed improvement on x86/x64 (up to +20%) by @djwatson
+api : changed : _destSize() compression variants are promoted to stable API
+api : new : LZ4_initStream(HC), replacing LZ4_resetStream(HC)
+api : changed : LZ4_resetStream(HC) as recommended reset function, for better performance on small data
+cli : support custom block sizes, by @blezsan
+build: source code can be amalgamated, by Bing Xu
+build: added meson build, by @lzutao
+build: new build macros : LZ4_DISTANCE_MAX, LZ4_FAST_DEC_LOOP
+install: MidnightBSD, by @laffer1
+install: msys2 on Windows 10, by @vtorri
+
+v1.8.3
+perf: minor decompression speed improvement (~+2%) with gcc
+fix : corruption in v1.8.2 at level 9 for files > 64KB under rare conditions (#560)
+cli : new command --fast, by @jennifermliu
+cli : fixed elapsed time, and added cpu load indicator (on -vv) (#555)
+api : LZ4_decompress_safe_partial() now decodes exactly the nb of bytes requested (feature request #566)
+build : added Haiku target, by @fbrosson, and MidnightBSD, by @laffer1
+doc : updated documentation regarding dictionary compression
+
+v1.8.2
+perf: *much* faster dictionary compression on small files, by @felixhandte
+perf: improved decompression speed and binary size, by Alexey Tourbin (@svpv)
+perf: slightly faster HC compression and decompression speed
+perf: very small compression ratio improvement
+fix : compression compatible with low memory addresses (< 0xFFFF)
+fix : decompression segfault when provided with NULL input, by @terrelln
+cli : new command --favor-decSpeed
+cli : benchmark mode more accurate for small inputs
+fullbench : can bench _destSize() variants, by @felixhandte
+doc : clarified block format parsing restrictions, by Alexey Tourbin (@svpv)
+
+v1.8.1
+perf : faster and stronger ultra modes (levels 10+)
+perf : slightly faster compression and decompression speed
+perf : fix bad degenerative case, reported by @c-morgenstern
+fix : decompression failed when using a combination of extDict + low memory address (#397), reported and fixed by Julian Scheid (@jscheid)
+cli : support for dictionary compression (`-D`), by Felix Handte @felixhandte
+cli : fix : `lz4 -d --rm` preserves timestamp (#441)
+cli : fix : do not modify /dev/null permission as root, by @aliceatlas
+api : `_destSize()` variant supported for all compression levels
+build  : `make` and `make test` compatible with `-jX`, reported by @mwgamera
+build  : can control LZ4LIB_VISIBILITY macro, by @mikir
+install: fix man page directory (#387), reported by Stuart Cardall (@itoffshore)
+
+v1.8.0
+cli : fix : do not modify /dev/null permissions, reported by @Maokaman1
+cli : added GNU separator -- specifying that all following arguments are files
+API : added LZ4_compress_HC_destSize(), by Oleg (@remittor)
+API : added LZ4F_resetDecompressionContext()
+API : lz4frame : negative compression levels trigger fast acceleration, request by Lawrence Chan
+API : lz4frame : can control block checksum and dictionary ID
+API : fix : expose obsolete decoding functions, reported by Chen Yufei
+API : experimental : lz4frame_static : new dictionary compression API
+build : fix : static lib installation, by Ido Rosen
+build : dragonFlyBSD, OpenBSD, NetBSD supported
+build : LZ4_MEMORY_USAGE can be modified at compile time, through external define
+doc : Updated LZ4 Frame format to v1.6.0, restoring Dictionary-ID field
+doc : lz4 api manual, by Przemyslaw Skibinski
+
+v1.7.5
+lz4hc : new high compression mode : levels 10-12 compress more and slower, by Przemyslaw Skibinski
+lz4cat : fix : works with relative path (#284) and stdin (#285) (reported by @beiDei8z)
+cli : fix minor notification when using -r recursive mode
+API : lz4frame : LZ4F_frameBound(0) gives upper bound of *flush() and *End() operations (#290, #280)
+doc : markdown version of man page, by Takayuki Matsuoka (#279)
+build : Makefile : fix make -jX lib+exe concurrency (#277)
+build : cmake : improvements by Michał Górny (#296)
+
+v1.7.4.2
+fix : Makefile : release build compatible with PIE and customized compilation directives provided through environment variables (#274, reported by Antoine Martin)
+
+v1.7.4
+Improved : much better speed in -mx32 mode
+cli : fix : Large file support in 32-bits mode on Mac OS-X
+fix : compilation on gcc 4.4 (#272), reported by Antoine Martin
+
+v1.7.3
+Changed : moved to versioning; package, cli and library have same version number
+Improved: Small decompression speed boost
+Improved: Small compression speed improvement on 64-bits systems
+Improved: Small compression ratio and speed improvement on small files
+Improved: Significant speed boost on ARMv6 and ARMv7
+Fix : better ratio on 64-bits big-endian targets
+Improved cmake build script, by Evan Nemerson
+New liblz4-dll project, by Przemyslaw Skibinki
+Makefile: Generates object files (*.o) for faster (re)compilation on low power systems
+cli : new : --rm and --help commands
+cli : new : preserved file attributes, by Przemyslaw Skibinki
+cli : fix : crash on some invalid inputs
+cli : fix : -t correctly validates lz4-compressed files, by Nick Terrell
+cli : fix : detects and reports fread() errors, thanks to Hiroshi Fujishima report #243
+cli : bench : new : -r recursive mode
+lz4cat : can cat multiple files in a single command line (#184)
+Added : doc/lz4_manual.html, by Przemyslaw Skibinski
+Added : dictionary compression and frame decompression examples, by Nick Terrell
+Added : Debianization, by Evgeniy Polyakov
+
+r131
+New    : Dos/DJGPP target, thanks to Louis Santillan (#114)
+Added  : Example using lz4frame library, by Zbigniew Jędrzejewski-Szmek (#118)
+Changed: xxhash symbols are modified (namespace emulation) within liblz4
+
+r130:
+Fixed  : incompatibility sparse mode vs console, reported by Yongwoon Cho (#105)
+Fixed  : LZ4IO exits too early when frame crc not present, reported by Yongwoon Cho (#106)
+Fixed  : incompatibility sparse mode vs append mode, reported by Takayuki Matsuoka (#110)
+Performance fix : big compression speed boost for clang (+30%)
+New    : cross-version test, by Takayuki Matsuoka
+
+r129:
+Added  : LZ4_compress_fast(), LZ4_compress_fast_continue()
+Added  : LZ4_compress_destSize()
+Changed: New lz4 and lz4hc compression API. Previous function prototypes still supported.
+Changed: Sparse file support enabled by default
+New    : LZ4 CLI improved performance compressing/decompressing multiple files (#86, kind contribution from Kyle J. Harper & Takayuki Matsuoka)
+Fixed  : GCC 4.9+ optimization bug - Reported by Markus Trippelsdorf, Greg Slazinski & Evan Nemerson
+Changed: Enums converted to LZ4F_ namespace convention - by Takayuki Matsuoka
+Added  : AppVeyor CI environment, for Visual tests - Suggested by Takayuki Matsuoka
+Modified:Obsolete functions generate warnings - Suggested by Evan Nemerson, contributed by Takayuki Matsuoka
+Fixed  : Bug #75 (unfinished stream), reported by Yongwoon Cho
+Updated: Documentation converted to MarkDown format
+
+r128:
+New    : lz4cli sparse file support (Requested by Neil Wilson, and contributed by Takayuki Matsuoka)
+New    : command -m, to compress multiple files in a single command (suggested by Kyle J. Harper)
+Fixed  : Restored lz4hc compression ratio (slightly lower since r124)
+New    : lz4 cli supports long commands (suggested by Takayuki Matsuoka)
+New    : lz4frame & lz4cli frame content size support
+New    : lz4frame supports skippable frames, as requested by Sergey Cherepanov
+Changed: Default "make install" directory is /usr/local, as notified by Ron Johnson
+New    : lz4 cli supports "pass-through" mode, requested by Neil Wilson
+New    : datagen can generate sparse files
+New    : scan-build tests, thanks to kind help by Takayuki Matsuoka
+New    : g++ compatibility tests
+New    : arm cross-compilation test, thanks to kind help by Takayuki Matsuoka
+Fixed  : Fuzzer + frametest compatibility with NetBSD (issue #48, reported by Thomas Klausner)
+Added  : Visual project directory
+Updated: Man page & Specification
+
+r127:
+N/A   : added a file on SVN
+
+r126:
+New   : lz4frame API is now integrated into liblz4
+Fixed : GCC 4.9 bug on highest performance settings, reported by Greg Slazinski
+Fixed : bug within LZ4 HC streaming mode, reported by James Boyle
+Fixed : older compiler don't like nameless unions, reported by Cheyi Lin
+Changed : lz4 is C90 compatible
+Changed : added -pedantic option, fixed a few mminor warnings
+
+r125:
+Changed : endian and alignment code
+Changed : directory structure : new "lib" directory
+Updated : lz4io, now uses lz4frame
+Improved: slightly improved decoding speed
+Fixed : LZ4_compress_limitedOutput(); Special thanks to Christopher Speller !
+Fixed : some alignment warnings under clang
+Fixed : deprecated function LZ4_slideInputBufferHC()
+
+r124:
+New : LZ4 HC streaming mode
+Fixed : LZ4F_compressBound() using null preferencesPtr
+Updated : xxHash to r38
+Updated library number, to 1.4.0
+
+r123:
+Added : experimental lz4frame API, thanks to Takayuki Matsuoka and Christopher Jackson for testings
+Fix : s390x support, thanks to Nobuhiro Iwamatsu
+Fix : test mode (-t) no longer requires confirmation, thanks to Thary Nguyen
+
+r122:
+Fix : AIX & AIX64 support (SamG)
+Fix : mips 64-bits support (lew van)
+Added : Examples directory, using code examples from Takayuki Matsuoka
+Updated : Framing specification, to v1.4.1
+Updated : xxHash, to r36
+
+r121:
+Added : Makefile : install for kFreeBSD and Hurd (Nobuhiro Iwamatsu)
+Fix : Makefile : install for OS-X and BSD, thanks to Takayuki Matsuoka
+
+r120:
+Modified : Streaming API, using strong types
+Added : LZ4_versionNumber(), thanks to Takayuki Matsuoka
+Fix : OS-X : library install name, thanks to Clemens Lang
+Updated : Makefile : synchronize library version number with lz4.h, thanks to Takayuki Matsuoka
+Updated : Makefile : stricter compilation flags
+Added : pkg-config, thanks to Zbigniew Jędrzejewski-Szmek (issue 135)
+Makefile : lz4-test only test native binaries, as suggested by Michał Górny (issue 136)
+Updated : xxHash to r35
+
+r119:
+Fix : Issue 134 : extended malicious address space overflow in 32-bits mode for some specific configurations
+
+r118:
+New : LZ4 Streaming API (Fast version), special thanks to Takayuki Matsuoka
+New : datagen : parametrable synthetic data generator for tests
+Improved : fuzzer, support more test cases, more parameters, ability to jump to specific test
+fix : support ppc64le platform (issue 131)
+fix : Issue 52 (malicious address space overflow in 32-bits mode when using large custom format)
+fix : Makefile : minor issue 130 : header files permissions
+
+r117:
+Added : man pages for lz4c and lz4cat
+Added : automated tests on Travis, thanks to Takayuki Matsuoka !
+fix : block-dependency command line (issue 127)
+fix : lz4fullbench (issue 128)
+
+r116:
+hotfix (issue 124 & 125)
+
+r115:
+Added : lz4cat utility, installed on POSX systems (issue 118)
+OS-X compatible compilation of dynamic library (issue 115)
+
+r114:
+Makefile : library correctly compiled with -O3 switch (issue 114)
+Makefile : library compilation compatible with clang
+Makefile : library is versioned and linked (issue 119)
+lz4.h : no more static inline prototypes (issue 116)
+man : improved header/footer (issue 111)
+Makefile : Use system default $(CC) & $(MAKE) variables (issue 112)
+xxhash : updated to r34
+
+r113:
+Large decompression speed improvement for GCC 32-bits. Thanks to Valery Croizier !
+LZ4HC : Compression Level is now a programmable parameter (CLI from 4 to 9)
+Separated IO routines from command line (lz4io.c)
+Version number into lz4.h (suggested by Francesc Alted)
+
+r112:
+quickfix
+
+r111 :
+Makefile : added capability to install libraries
+Modified Directory tree, to better separate libraries from programs.
+
+r110 :
+lz4 & lz4hc : added capability to allocate state & stream state with custom allocator (issue 99)
+fuzzer & fullbench : updated to test new functions
+man : documented -l command (Legacy format, for Linux kernel compression) (issue 102)
+cmake : improved version by Mika Attila, building programs and libraries (issue 100)
+xxHash : updated to r33
+Makefile : clean also delete local package .tar.gz
+
+r109 :
+lz4.c : corrected issue 98 (LZ4_compress_limitedOutput())
+Makefile : can specify version number from makefile
+
+r108 :
+lz4.c : corrected compression efficiency issue 97 in 64-bits chained mode (-BD) for streams > 4 GB (thanks Roman Strashkin for reporting)
+
+r107 :
+Makefile : support DESTDIR for staged installs. Thanks Jorge Aparicio.
+Makefile : make install installs both lz4 and lz4c (Jorge Aparicio)
+Makefile : removed -Wno-implicit-declaration compilation switch
+lz4cli.c : include <stduni.h> for isatty() (Luca Barbato)
+lz4.h : introduced LZ4_MAX_INPUT_SIZE constant (Shay Green)
+lz4.h : LZ4_compressBound() : unified macro and inline definitions (Shay Green)
+lz4.h : LZ4_decompressSafe_partial() : clarify comments (Shay Green)
+lz4.c : LZ4_compress() verify input size condition (Shay Green)
+bench.c : corrected a bug in free memory size evaluation
+cmake : install into bin/ directory (Richard Yao)
+cmake : check for just C compiler (Elan Ruusamae)
+
+r106 :
+Makefile : make dist modify text files in the package to respect Unix EoL convention
+lz4cli.c : corrected small display bug in HC mode
+
+r105 :
+Makefile : New install script and man page, contributed by Prasad Pandit
+lz4cli.c : Minor modifications, for easier extensibility
+COPYING  : added license file
+LZ4_Streaming_Format.odt : modified file name to remove white space characters
+Makefile : .exe suffix now properly added only for Windows target

lz4.mod/lz4/README.md

@@ -0,0 +1,120 @@
+LZ4 - Extremely fast compression
+================================
+
+LZ4 is lossless compression algorithm,
+providing compression speed > 500 MB/s per core,
+scalable with multi-cores CPU.
+It features an extremely fast decoder,
+with speed in multiple GB/s per core,
+typically reaching RAM speed limits on multi-core systems.
+
+Speed can be tuned dynamically, selecting an "acceleration" factor
+which trades compression ratio for faster speed.
+On the other end, a high compression derivative, LZ4_HC, is also provided,
+trading CPU time for improved compression ratio.
+All versions feature the same decompression speed.
+
+LZ4 is also compatible with [dictionary compression](https://github.com/facebook/zstd#the-case-for-small-data-compression),
+both at [API](https://github.com/lz4/lz4/blob/v1.8.3/lib/lz4frame.h#L481) and [CLI](https://github.com/lz4/lz4/blob/v1.8.3/programs/lz4.1.md#operation-modifiers) levels.
+It can ingest any input file as dictionary, though only the final 64KB are used.
+This capability can be combined with the [Zstandard Dictionary Builder](https://github.com/facebook/zstd/blob/v1.3.5/programs/zstd.1.md#dictionary-builder),
+in order to drastically improve compression performance on small files.
+
+
+LZ4 library is provided as open-source software using BSD 2-Clause license.
+
+
+|Branch      |Status   |
+|------------|---------|
+|dev         | [![Build Status][travisDevBadge]][travisLink]    [![Build status][AppveyorDevBadge]][AppveyorLink]                                         |
+
+[travisDevBadge]: https://travis-ci.org/lz4/lz4.svg?branch=dev "Continuous Integration test suite"
+[travisLink]: https://travis-ci.org/lz4/lz4
+[AppveyorDevBadge]: https://ci.appveyor.com/api/projects/status/github/lz4/lz4?branch=dev&svg=true "Windows test suite"
+[AppveyorLink]: https://ci.appveyor.com/project/YannCollet/lz4-1lndh
+
+
+Benchmarks
+-------------------------
+
+The benchmark uses [lzbench], from @inikep
+compiled with GCC v8.2.0 on Linux 64-bits (Ubuntu 4.18.0-17).
+The reference system uses a Core i7-9700K CPU @ 4.9GHz (w/ turbo boost).
+Benchmark evaluates the compression of reference [Silesia Corpus]
+in single-thread mode.
+
+[lzbench]: https://github.com/inikep/lzbench
+[Silesia Corpus]: http://sun.aei.polsl.pl/~sdeor/index.php?page=silesia
+
+|  Compressor             | Ratio   | Compression | Decompression |
+|  ----------             | -----   | ----------- | ------------- |
+|  memcpy                 |  1.000  | 13700 MB/s  |  13700 MB/s   |
+|**LZ4 default (v1.9.0)** |**2.101**| **780 MB/s**| **4970 MB/s** |
+|  LZO 2.09               |  2.108  |   670 MB/s  |    860 MB/s   |
+|  QuickLZ 1.5.0          |  2.238  |   575 MB/s  |    780 MB/s   |
+|  Snappy 1.1.4           |  2.091  |   565 MB/s  |   1950 MB/s   |
+| [Zstandard] 1.4.0 -1    |  2.883  |   515 MB/s  |   1380 MB/s   |
+|  LZF v3.6               |  2.073  |   415 MB/s  |    910 MB/s   |
+| [zlib] deflate 1.2.11 -1|  2.730  |   100 MB/s  |    415 MB/s   |
+|**LZ4 HC -9 (v1.9.0)**   |**2.721**|    41 MB/s  | **4900 MB/s** |
+| [zlib] deflate 1.2.11 -6|  3.099  |    36 MB/s  |    445 MB/s   |
+
+[zlib]: http://www.zlib.net/
+[Zstandard]: http://www.zstd.net/
+
+LZ4 is also compatible and optimized for x32 mode,
+for which it provides additional speed performance.
+
+
+Installation
+-------------------------
+
+```
+make
+make install     # this command may require root permissions
+```
+
+LZ4's `Makefile` supports standard [Makefile conventions],
+including [staged installs], [redirection], or [command redefinition].
+It is compatible with parallel builds (`-j#`).
+
+[Makefile conventions]: https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html
+[staged installs]: https://www.gnu.org/prep/standards/html_node/DESTDIR.html
+[redirection]: https://www.gnu.org/prep/standards/html_node/Directory-Variables.html
+[command redefinition]: https://www.gnu.org/prep/standards/html_node/Utilities-in-Makefiles.html
+
+### Building LZ4 - Using vcpkg
+
+You can download and install LZ4 using the [vcpkg](https://github.com/Microsoft/vcpkg) dependency manager:
+
+    git clone https://github.com/Microsoft/vcpkg.git
+    cd vcpkg
+    ./bootstrap-vcpkg.sh
+    ./vcpkg integrate install
+    vcpkg install lz4
+
+The LZ4 port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
+
+Documentation
+-------------------------
+
+The raw LZ4 block compression format is detailed within [lz4_Block_format].
+
+Arbitrarily long files or data streams are compressed using multiple blocks,
+for streaming requirements. These blocks are organized into a frame,
+defined into [lz4_Frame_format].
+Interoperable versions of LZ4 must also respect the frame format.
+
+[lz4_Block_format]: doc/lz4_Block_format.md
+[lz4_Frame_format]: doc/lz4_Frame_format.md
+
+
+Other source versions
+-------------------------
+
+Beyond the C reference source,
+many contributors have created versions of lz4 in multiple languages
+(Java, C#, Python, Perl, Ruby, etc.).
+A list of known source ports is maintained on the [LZ4 Homepage].
+
+[LZ4 Homepage]: http://www.lz4.org

lz4.mod/lz4/appveyor.yml

@@ -0,0 +1,147 @@
+version: 1.0.{build}
+environment:
+  matrix:
+  - COMPILER: "gcc"
+    PLATFORM: "mingw64"
+  - COMPILER: "gcc"
+    PLATFORM: "mingw32"
+  - COMPILER: "visual"
+    CONFIGURATION: "Debug"
+    PLATFORM: "x64"
+  - COMPILER: "visual"
+    CONFIGURATION: "Debug"
+    PLATFORM: "Win32"
+  - COMPILER: "visual"
+    CONFIGURATION: "Release"
+    PLATFORM: "x64"
+  - COMPILER: "visual"
+    CONFIGURATION: "Release"
+    PLATFORM: "Win32"
+  - COMPILER: "gcc"
+    PLATFORM: "clang"
+
+install:
+  - ECHO Installing %COMPILER% %PLATFORM% %CONFIGURATION%
+  - MKDIR bin
+  - if [%COMPILER%]==[gcc] SET PATH_ORIGINAL=%PATH%
+  - if [%COMPILER%]==[gcc] (
+      SET "PATH_MINGW32=c:\MinGW\bin;c:\MinGW\usr\bin" &&
+      SET "PATH_MINGW64=c:\msys64\mingw64\bin;c:\msys64\usr\bin" &&
+      COPY C:\MinGW\bin\mingw32-make.exe C:\MinGW\bin\make.exe &&
+      COPY C:\MinGW\bin\gcc.exe C:\MinGW\bin\cc.exe
+    ) else (
+      IF [%PLATFORM%]==[x64] (SET ADDITIONALPARAM=/p:LibraryPath="C:\Program Files\Microsoft SDKs\Windows\v7.1\lib\x64;c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\amd64;C:\Program Files (x86)\Microsoft Visual Studio 10.0\;C:\Program Files (x86)\Microsoft Visual Studio 10.0\lib\amd64;")
+    )
+
+build_script:
+  - if [%PLATFORM%]==[mingw32] SET PATH=%PATH_MINGW32%;%PATH_ORIGINAL%
+  - if [%PLATFORM%]==[mingw64] SET PATH=%PATH_MINGW64%;%PATH_ORIGINAL%
+  - if [%PLATFORM%]==[clang] SET PATH=%PATH_MINGW64%;%PATH_ORIGINAL%
+  - ECHO *** &&
+      ECHO Building %COMPILER% %PLATFORM% %CONFIGURATION% &&
+      ECHO ***
+  - if [%PLATFORM%]==[clang] (clang -v)
+  - if [%COMPILER%]==[gcc] (gcc -v)
+  - if [%COMPILER%]==[gcc] (
+      echo ----- &&
+      make -v &&
+      echo ----- &&
+      if not [%PLATFORM%]==[clang] (
+        make -C programs lz4 &&
+        make -C tests fullbench &&
+        make -C tests fuzzer &&
+        make -C lib lib V=1
+      ) ELSE (
+        make -C programs lz4 CC=clang MOREFLAGS="--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion" &&
+        make -C tests fullbench CC=clang MOREFLAGS="--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion" &&
+        make -C tests fuzzer CC=clang MOREFLAGS="--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion" &&
+        make -C lib lib CC=clang MOREFLAGS="--target=x86_64-w64-mingw32 -Werror -Wconversion -Wno-sign-conversion"
+      )
+    )
+  - if [%COMPILER%]==[gcc] if not [%PLATFORM%]==[clang] (
+      MKDIR bin\dll bin\static bin\example bin\include &&
+      COPY tests\fullbench.c bin\example\ &&
+      COPY lib\xxhash.c bin\example\ &&
+      COPY lib\xxhash.h bin\example\ &&
+      COPY lib\lz4.h bin\include\ &&
+      COPY lib\lz4hc.h bin\include\ &&
+      COPY lib\lz4frame.h bin\include\ &&
+      COPY lib\liblz4.a bin\static\liblz4_static.lib &&
+      COPY lib\dll\* bin\dll\ &&
+      COPY lib\dll\example\Makefile bin\example\ &&
+      COPY lib\dll\example\fullbench-dll.* bin\example\ &&
+      COPY lib\dll\example\README.md bin\ &&
+      COPY programs\lz4.exe bin\lz4.exe
+    )
+  - if [%COMPILER%]==[gcc] if [%PLATFORM%]==[mingw64] (
+      7z.exe a -bb1 bin\lz4_x64.zip NEWS .\bin\lz4.exe .\bin\README.md .\bin\example .\bin\dll .\bin\static .\bin\include &&
+      appveyor PushArtifact bin\lz4_x64.zip
+    )
+  - if [%COMPILER%]==[gcc] if [%PLATFORM%]==[mingw32] (
+      7z.exe a -bb1 bin\lz4_x86.zip NEWS .\bin\lz4.exe .\bin\README.md .\bin\example .\bin\dll .\bin\static .\bin\include &&
+      appveyor PushArtifact bin\lz4_x86.zip
+    )
+  - if [%COMPILER%]==[gcc] (COPY tests\*.exe programs\)
+  - if [%COMPILER%]==[visual] (
+      ECHO *** &&
+      ECHO *** Building Visual Studio 2010 %PLATFORM%\%CONFIGURATION% &&
+      ECHO *** &&
+      msbuild "build\VS2010\lz4.sln" %ADDITIONALPARAM% /m /verbosity:minimal /property:PlatformToolset=v100 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /p:EnableWholeProgramOptimization=true /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
+      ECHO *** &&
+      ECHO *** Building Visual Studio 2012 %PLATFORM%\%CONFIGURATION% &&
+      ECHO *** &&
+      msbuild "build\VS2010\lz4.sln" /m /verbosity:minimal /property:PlatformToolset=v110 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
+      ECHO *** &&
+      ECHO *** Building Visual Studio 2013 %PLATFORM%\%CONFIGURATION% &&
+      ECHO *** &&
+      msbuild "build\VS2010\lz4.sln" /m /verbosity:minimal /property:PlatformToolset=v120 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
+      ECHO *** &&
+      ECHO *** Building Visual Studio 2015 %PLATFORM%\%CONFIGURATION% &&
+      ECHO *** &&
+      msbuild "build\VS2010\lz4.sln" /m /verbosity:minimal /property:PlatformToolset=v140 /t:Clean,Build /p:Platform=%PLATFORM% /p:Configuration=%CONFIGURATION% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll" &&
+      COPY build\VS2010\bin\%PLATFORM%_%CONFIGURATION%\*.exe programs\
+    )
+
+test_script:
+  - ECHO *** &&
+      ECHO Testing %COMPILER% %PLATFORM% %CONFIGURATION% &&
+      ECHO ***
+  - if not [%COMPILER%]==[unknown] (
+      CD programs &&
+      lz4 -h &&
+      lz4 -i1b lz4.exe &&
+      lz4 -i1b5 lz4.exe &&
+      lz4 -i1b10 lz4.exe &&
+      lz4 -i1b15 lz4.exe &&
+      echo ------- lz4 tested ------- &&
+      fullbench.exe -i1 fullbench.exe &&
+      echo trying to launch fuzzer.exe &&
+      fuzzer.exe -v -T30s
+    )
+
+artifacts:
+  - path: bin\lz4_x64.zip
+  - path: bin\lz4_x86.zip
+
+deploy:
+- provider: GitHub
+  artifact: bin\lz4_x64.zip
+  auth_token:
+    secure: w6UJaGie0qbZvffr/fqyhO/Vj8rMiQWnv9a8qm3gxfngdHDTMT42wYupqJpIExId
+  force_update: true
+  prerelease: true
+  on:
+    COMPILER: gcc
+    PLATFORM: "mingw64"
+    appveyor_repo_tag: true
+
+- provider: GitHub
+  artifact: bin\lz4_x86.zip
+  auth_token:
+    secure: w6UJaGie0qbZvffr/fqyhO/Vj8rMiQWnv9a8qm3gxfngdHDTMT42wYupqJpIExId
+  force_update: true
+  prerelease: true
+  on:
+    COMPILER: gcc
+    PLATFORM: "mingw32"
+    appveyor_repo_tag: true

lz4.mod/lz4/build/.gitignore

@@ -0,0 +1,16 @@
+# Visual C++
+.vs/
+*Copy
+*.db
+*.opensdf
+*.sdf
+*.suo
+*.user
+ver*/
+VS2010/bin/
+VS2017/bin/
+ipch
+
+# Fixup for lz4 project directories
+!VS2010/lz4
+!VS2017/lz4

lz4.mod/lz4/build/README.md

@@ -0,0 +1,55 @@
+Projects for various integrated development environments (IDE)
+==============================================================
+
+#### Included projects
+
+The following projects are included with the lz4 distribution:
+- `cmake` - CMake project
+- `VS2010` - Visual Studio 2010 project (which also works well with Visual Studio 2012, 2013, 2015)
+- `VS2017` - Visual Studio 2017 project
+
+
+#### How to compile lz4 with Visual Studio
+
+1. Install Visual Studio e.g. VS 2015 Community Edition (it's free).
+2. Download the latest version of lz4 from https://github.com/lz4/lz4/releases
+3. Decompress ZIP archive.
+4. Go to decompressed directory then to `build` then `VS2010` and open `lz4.sln`
+5. Visual Studio will ask about converting VS2010 project to VS2015 and you should agree.
+6. Change `Debug` to `Release` and if you have 64-bit Windows change also `Win32` to `x64`.
+7. Press F7 on keyboard or select `BUILD` from the menu bar and choose `Build Solution`.
+8. If compilation will be fine a compiled executable will be in `build\VS2010\bin\x64_Release\lz4.exe`
+
+
+#### Projects available within lz4.sln
+
+The Visual Studio solution file `lz4.sln` contains many projects that will be compiled to the
+`build\VS2010\bin\$(Platform)_$(Configuration)` directory. For example `lz4` set to `x64` and
+`Release` will be compiled to `build\VS2010\bin\x64_Release\lz4.exe`. The solution file contains the
+following projects:
+
+- `lz4` : Command Line Utility, supporting gzip-like arguments
+- `datagen` : Synthetic and parametrable data generator, for tests
+- `frametest` : Test tool that checks lz4frame integrity on target platform
+- `fullbench`  : Precisely measure speed for each lz4 inner functions
+- `fuzzer` : Test tool, to check lz4 integrity on target platform
+- `liblz4` : A static LZ4 library compiled to `liblz4_static.lib`
+- `liblz4-dll` : A dynamic LZ4 library (DLL) compiled to `liblz4.dll` with the import library `liblz4.lib`
+- `fullbench-dll` : The fullbench program compiled with the import library; the executable requires LZ4 DLL
+
+
+#### Using LZ4 DLL with Microsoft Visual C++ project
+
+The header files `lib\lz4.h`, `lib\lz4hc.h`, `lib\lz4frame.h` and the import library
+`build\VS2010\bin\$(Platform)_$(Configuration)\liblz4.lib` are required to
+compile a project using Visual C++.
+
+1. The path to header files should be added to `Additional Include Directories` that can
+   be found in Project Properties of Visual Studio IDE in the `C/C++` Property Pages on the `General` page.
+2. The import library has to be added to `Additional Dependencies` that can
+   be found in Project Properties in the `Linker` Property Pages on the `Input` page.
+   If one will provide only the name `liblz4.lib` without a full path to the library
+   then the directory has to be added to `Linker\General\Additional Library Directories`.
+
+The compiled executable will require LZ4 DLL which is available at
+`build\VS2010\bin\$(Platform)_$(Configuration)\liblz4.dll`.

lz4.mod/lz4/build/VS2010/datagen/datagen.vcxproj

@@ -0,0 +1,169 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{D745AE2F-596A-403A-9B91-81A8C6779243}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>datagen</RootNamespace>
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
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+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
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+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
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+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
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+    <Link>
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+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
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+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\programs\datagen.c" />
+    <ClCompile Include="..\..\..\tests\datagencli.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\programs\datagen.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

lz4.mod/lz4/build/VS2010/frametest/frametest.vcxproj

@@ -0,0 +1,176 @@
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+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
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+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
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+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Release|x64">
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+  <PropertyGroup Label="Globals">
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+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>frametest</RootNamespace>
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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+  </ItemDefinitionGroup>
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+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+    <Link>
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+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
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+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
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+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\lz4.c" />
+    <ClCompile Include="..\..\..\lib\lz4frame.c" />
+    <ClCompile Include="..\..\..\lib\lz4hc.c" />
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+    <ClCompile Include="..\..\..\tests\frametest.c" />
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lz4.mod/lz4/build/VS2010/fullbench-dll/fullbench-dll.vcxproj

@@ -0,0 +1,180 @@
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+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\lz4.c" />
+    <ClCompile Include="..\..\..\lib\lz4hc.c" />
+    <ClCompile Include="..\..\..\lib\xxhash.c" />
+    <ClCompile Include="..\..\..\tests\fuzzer.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\lib\lz4.h" />
+    <ClInclude Include="..\..\..\lib\lz4hc.h" />
+    <ClInclude Include="..\..\..\lib\xxhash.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

lz4.mod/lz4/build/VS2010/liblz4-dll/liblz4-dll.rc

@@ -0,0 +1,51 @@
+// Microsoft Visual C++ generated resource script.
+//
+
+#include "lz4.h" /* LZ4_VERSION_STRING */
+#define APSTUDIO_READONLY_SYMBOLS
+#include "verrsrc.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+LANGUAGE 9, 1
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO     VERSIONINFO
+  FILEVERSION       LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+  PRODUCTVERSION    LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS_NT_WINDOWS32
+ FILETYPE VFT_DLL
+ FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904B0"
+        BEGIN
+            VALUE "CompanyName", "Yann Collet"
+            VALUE "FileDescription", "Extremely fast compression"
+            VALUE "FileVersion", LZ4_VERSION_STRING
+            VALUE "InternalName", "lz4.dll"
+            VALUE "LegalCopyright", "Copyright (C) 2013-2020, Yann Collet"
+            VALUE "OriginalFilename", "lz4.dll"
+            VALUE "ProductName", "LZ4"
+            VALUE "ProductVersion", LZ4_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x0409, 1200
+    END
+END
+
+#endif

lz4.mod/lz4/build/VS2010/liblz4-dll/liblz4-dll.vcxproj

@@ -0,0 +1,179 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{9800039D-4AAA-43A4-BB78-FEF6F4836927}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>liblz4-dll</RootNamespace>
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+    <ProjectName>liblz4-dll</ProjectName>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <TargetName>liblz4</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+    <TargetName>liblz4</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <RunCodeAnalysis>true</RunCodeAnalysis>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <TargetName>liblz4</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+    <TargetName>liblz4</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <RunCodeAnalysis>true</RunCodeAnalysis>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\lib\lz4.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame_static.h" />
+    <ClInclude Include="..\..\..\lib\lz4hc.h" />
+    <ClInclude Include="..\..\..\lib\xxhash.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\lz4.c" />
+    <ClCompile Include="..\..\..\lib\lz4frame.c" />
+    <ClCompile Include="..\..\..\lib\lz4hc.c" />
+    <ClCompile Include="..\..\..\lib\xxhash.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="liblz4-dll.rc" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

lz4.mod/lz4/build/VS2010/liblz4/liblz4.vcxproj

@@ -0,0 +1,175 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{9092C5CC-3E71-41B3-BF68-4A7BDD8A5476}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>liblz4</RootNamespace>
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <RunCodeAnalysis>true</RunCodeAnalysis>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <RunCodeAnalysis>true</RunCodeAnalysis>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\lib\lz4.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame_static.h" />
+    <ClInclude Include="..\..\..\lib\lz4hc.h" />
+    <ClInclude Include="..\..\..\lib\xxhash.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\lz4.c" />
+    <ClCompile Include="..\..\..\lib\lz4frame.c" />
+    <ClCompile Include="..\..\..\lib\lz4hc.c" />
+    <ClCompile Include="..\..\..\lib\xxhash.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

lz4.mod/lz4/build/VS2010/lz4.sln

@@ -0,0 +1,98 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Express 2012 for Windows Desktop
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "lz4", "lz4\lz4.vcxproj", "{E30329AC-0057-4FE0-8FDA-7F650D398C4C}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "liblz4-dll", "liblz4-dll\liblz4-dll.vcxproj", "{9800039D-4AAA-43A4-BB78-FEF6F4836927}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "liblz4", "liblz4\liblz4.vcxproj", "{9092C5CC-3E71-41B3-BF68-4A7BDD8A5476}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fuzzer", "fuzzer\fuzzer.vcxproj", "{18B9F1A7-9C66-4352-898B-30804DADE0FD}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fullbench", "fullbench\fullbench.vcxproj", "{6A4DF4EF-C77F-43C6-8901-DDCD20879E4E}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "frametest", "frametest\frametest.vcxproj", "{39AD6ECC-8BAD-4368-95E4-A1AA2F077BB7}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "datagen", "datagen\datagen.vcxproj", "{D745AE2F-596A-403A-9B91-81A8C6779243}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fullbench-dll", "fullbench-dll\fullbench-dll.vcxproj", "{13992FD2-077E-4954-B065-A428198201A9}"
+	ProjectSection(ProjectDependencies) = postProject
+		{9800039D-4AAA-43A4-BB78-FEF6F4836927} = {9800039D-4AAA-43A4-BB78-FEF6F4836927}
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{E30329AC-0057-4FE0-8FDA-7F650D398C4C}.Debug|Win32.ActiveCfg = Debug|Win32
+		{E30329AC-0057-4FE0-8FDA-7F650D398C4C}.Debug|Win32.Build.0 = Debug|Win32
+		{E30329AC-0057-4FE0-8FDA-7F650D398C4C}.Debug|x64.ActiveCfg = Debug|x64
+		{E30329AC-0057-4FE0-8FDA-7F650D398C4C}.Debug|x64.Build.0 = Debug|x64
+		{E30329AC-0057-4FE0-8FDA-7F650D398C4C}.Release|Win32.ActiveCfg = Release|Win32
+		{E30329AC-0057-4FE0-8FDA-7F650D398C4C}.Release|Win32.Build.0 = Release|Win32
+		{E30329AC-0057-4FE0-8FDA-7F650D398C4C}.Release|x64.ActiveCfg = Release|x64
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lz4.mod/lz4/build/VS2010/lz4/lz4.rc

@@ -0,0 +1,51 @@
+// Microsoft Visual C++ generated resource script.
+//
+
+#include "lz4.h" /* LZ4_VERSION_STRING */
+#define APSTUDIO_READONLY_SYMBOLS
+#include "verrsrc.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+LANGUAGE 9, 1
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO     VERSIONINFO
+  FILEVERSION       LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+  PRODUCTVERSION    LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS_NT_WINDOWS32
+ FILETYPE VFT_DLL
+ FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904B0"
+        BEGIN
+            VALUE "CompanyName", "Yann Collet"
+            VALUE "FileDescription", "Extremely fast compression"
+            VALUE "FileVersion", LZ4_VERSION_STRING
+            VALUE "InternalName", "lz4.exe"
+            VALUE "LegalCopyright", "Copyright (C) 2013-2020, Yann Collet"
+            VALUE "OriginalFilename", "lz4.exe"
+            VALUE "ProductName", "LZ4"
+            VALUE "ProductVersion", LZ4_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x0409, 1200
+    END
+END
+
+#endif

lz4.mod/lz4/build/VS2010/lz4/lz4.vcxproj

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lz4.mod/lz4/build/VS2017/datagen/datagen.vcxproj

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lz4.mod/lz4/build/VS2017/fuzzer/fuzzer.vcxproj

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lz4.mod/lz4/build/VS2017/liblz4-dll/liblz4-dll.rc

@@ -0,0 +1,51 @@
+// Microsoft Visual C++ generated resource script.
+//
+
+#include "lz4.h" /* LZ4_VERSION_STRING */
+#define APSTUDIO_READONLY_SYMBOLS
+#include "verrsrc.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+LANGUAGE 9, 1
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO     VERSIONINFO
+  FILEVERSION       LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+  PRODUCTVERSION    LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS_NT_WINDOWS32
+ FILETYPE VFT_DLL
+ FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904B0"
+        BEGIN
+            VALUE "CompanyName", "Yann Collet"
+            VALUE "FileDescription", "Extremely fast compression"
+            VALUE "FileVersion", LZ4_VERSION_STRING
+            VALUE "InternalName", "lz4.dll"
+            VALUE "LegalCopyright", "Copyright (C) 2013-2020, Yann Collet"
+            VALUE "OriginalFilename", "lz4.dll"
+            VALUE "ProductName", "LZ4"
+            VALUE "ProductVersion", LZ4_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x0409, 1200
+    END
+END
+
+#endif

lz4.mod/lz4/build/VS2017/liblz4-dll/liblz4-dll.vcxproj

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+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\lib\lz4.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame_static.h" />
+    <ClInclude Include="..\..\..\lib\lz4hc.h" />
+    <ClInclude Include="..\..\..\lib\xxhash.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\lz4.c" />
+    <ClCompile Include="..\..\..\lib\lz4frame.c" />
+    <ClCompile Include="..\..\..\lib\lz4hc.c" />
+    <ClCompile Include="..\..\..\lib\xxhash.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="liblz4-dll.rc" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

lz4.mod/lz4/build/VS2017/liblz4/liblz4.vcxproj

@@ -0,0 +1,179 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{9092C5CC-3E71-41B3-BF68-4A7BDD8A5476}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>liblz4</RootNamespace>
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v141</PlatformToolset>
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+    <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v141</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
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+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
+    <PlatformToolset>v141</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+    <WholeProgramOptimization Condition="'$(EnableWholeProgramOptimization)'=='true'">true</WholeProgramOptimization>
+    <PlatformToolset>v141</PlatformToolset>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <RunCodeAnalysis>true</RunCodeAnalysis>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+    <TargetName>liblz4_static</TargetName>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <RunCodeAnalysis>true</RunCodeAnalysis>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreadedDebug</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>false</EnablePREfast>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
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+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;LZ4_DLL_EXPORT=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <TreatWarningAsError>false</TreatWarningAsError>
+      <EnablePREfast>true</EnablePREfast>
+      <AdditionalOptions>/analyze:stacksize295252 %(AdditionalOptions)</AdditionalOptions>
+      <RuntimeLibrary Condition="'$(UseStaticCRT)'=='true'">MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\lib\lz4.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame_static.h" />
+    <ClInclude Include="..\..\..\lib\lz4hc.h" />
+    <ClInclude Include="..\..\..\lib\xxhash.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\lz4.c" />
+    <ClCompile Include="..\..\..\lib\lz4frame.c" />
+    <ClCompile Include="..\..\..\lib\lz4hc.c" />
+    <ClCompile Include="..\..\..\lib\xxhash.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

lz4.mod/lz4/build/VS2017/lz4.sln

@@ -0,0 +1,103 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.271
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "liblz4-dll", "liblz4-dll\liblz4-dll.vcxproj", "{9800039D-4AAA-43A4-BB78-FEF6F4836927}"
+EndProject
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+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fuzzer", "fuzzer\fuzzer.vcxproj", "{18B9F1A7-9C66-4352-898B-30804DADE0FD}"
+EndProject
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+EndProject
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+EndProject
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+EndProject
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+	ProjectSection(ProjectDependencies) = postProject
+		{9800039D-4AAA-43A4-BB78-FEF6F4836927} = {9800039D-4AAA-43A4-BB78-FEF6F4836927}
+	EndProjectSection
+EndProject
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+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
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+		{9800039D-4AAA-43A4-BB78-FEF6F4836927}.Debug|Win32.Build.0 = Debug|Win32
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+		{9800039D-4AAA-43A4-BB78-FEF6F4836927}.Release|Win32.ActiveCfg = Release|Win32
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+		{9800039D-4AAA-43A4-BB78-FEF6F4836927}.Release|x64.Build.0 = Release|x64
+		{9092C5CC-3E71-41B3-BF68-4A7BDD8A5476}.Debug|Win32.ActiveCfg = Debug|Win32
+		{9092C5CC-3E71-41B3-BF68-4A7BDD8A5476}.Debug|Win32.Build.0 = Debug|Win32
+		{9092C5CC-3E71-41B3-BF68-4A7BDD8A5476}.Debug|x64.ActiveCfg = Debug|x64
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+		{6A4DF4EF-C77F-43C6-8901-DDCD20879E4E}.Debug|x64.Build.0 = Debug|x64
+		{6A4DF4EF-C77F-43C6-8901-DDCD20879E4E}.Release|Win32.ActiveCfg = Release|Win32
+		{6A4DF4EF-C77F-43C6-8901-DDCD20879E4E}.Release|Win32.Build.0 = Release|Win32
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+		{6A4DF4EF-C77F-43C6-8901-DDCD20879E4E}.Release|x64.Build.0 = Release|x64
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+		{39AD6ECC-8BAD-4368-95E4-A1AA2F077BB7}.Debug|Win32.Build.0 = Debug|Win32
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+		{39AD6ECC-8BAD-4368-95E4-A1AA2F077BB7}.Debug|x64.Build.0 = Debug|x64
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+		{39AD6ECC-8BAD-4368-95E4-A1AA2F077BB7}.Release|Win32.Build.0 = Release|Win32
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+		HideSolutionNode = FALSE
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lz4.mod/lz4/build/VS2017/lz4/lz4.rc

@@ -0,0 +1,51 @@
+// Microsoft Visual C++ generated resource script.
+//
+
+#include "lz4.h" /* LZ4_VERSION_STRING */
+#define APSTUDIO_READONLY_SYMBOLS
+#include "verrsrc.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
+LANGUAGE 9, 1
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+VS_VERSION_INFO     VERSIONINFO
+  FILEVERSION       LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+  PRODUCTVERSION    LZ4_VERSION_MAJOR,LZ4_VERSION_MINOR,LZ4_VERSION_RELEASE,0
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS_NT_WINDOWS32
+ FILETYPE VFT_DLL
+ FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904B0"
+        BEGIN
+            VALUE "CompanyName", "Yann Collet"
+            VALUE "FileDescription", "Extremely fast compression"
+            VALUE "FileVersion", LZ4_VERSION_STRING
+            VALUE "InternalName", "lz4.exe"
+            VALUE "LegalCopyright", "Copyright (C) 2013-2020, Yann Collet"
+            VALUE "OriginalFilename", "lz4.exe"
+            VALUE "ProductName", "LZ4"
+            VALUE "ProductVersion", LZ4_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x0409, 1200
+    END
+END
+
+#endif

lz4.mod/lz4/build/VS2017/lz4/lz4.vcxproj

@@ -0,0 +1,175 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>15.0</VCProjectVersion>
+    <ProjectGuid>{60A3115E-B988-41EE-8815-F4D4F253D866}</ProjectGuid>
+    <RootNamespace>lz4</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <WholeProgramOptimization>false</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <OutDir>$(SolutionDir)bin\$(Platform)_$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)bin\obj\$(RootNamespace)_$(Platform)_$(Configuration)\</IntDir>
+    <IncludePath>$(IncludePath);$(UniversalCRT_IncludePath);$(SolutionDir)..\..\lib;$(SolutionDir)..\..\programs;$(VCInstallDir)include;$(VCInstallDir)atlmfc\include;$(WindowsSDK_IncludePath);</IncludePath>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+      <TreatWarningAsError>true</TreatWarningAsError>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+      <OptimizeReferences>false</OptimizeReferences>
+      <EnableCOMDATFolding>false</EnableCOMDATFolding>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\lib\lz4.c" />
+    <ClCompile Include="..\..\..\lib\lz4frame.c" />
+    <ClCompile Include="..\..\..\lib\lz4hc.c" />
+    <ClCompile Include="..\..\..\lib\xxhash.c" />
+    <ClCompile Include="..\..\..\programs\bench.c" />
+    <ClCompile Include="..\..\..\programs\datagen.c" />
+    <ClCompile Include="..\..\..\programs\lz4cli.c" />
+    <ClCompile Include="..\..\..\programs\lz4io.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\..\lib\lz4.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame.h" />
+    <ClInclude Include="..\..\..\lib\lz4frame_static.h" />
+    <ClInclude Include="..\..\..\lib\lz4hc.h" />
+    <ClInclude Include="..\..\..\lib\xxhash.h" />
+    <ClInclude Include="..\..\..\programs\bench.h" />
+    <ClInclude Include="..\..\..\programs\datagen.h" />
+    <ClInclude Include="..\..\..\programs\lz4io.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="lz4.rc" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

lz4.mod/lz4/build/cmake/.gitignore

@@ -0,0 +1,9 @@
+# cmake artefact
+
+CMakeCache.txt
+CMakeFiles
+*.cmake
+Makefile
+liblz4.pc
+lz4c
+install_manifest.txt

lz4.mod/lz4/build/cmake/CMakeLists.txt

@@ -0,0 +1,273 @@
+# CMake support for LZ4
+#
+# To the extent possible under law, the author(s) have dedicated all
+# copyright and related and neighboring rights to this software to
+# the public domain worldwide. This software is distributed without
+# any warranty.
+#
+# For details, see <http://creativecommons.org/publicdomain/zero/1.0/>.
+#
+# LZ4's CMake support is maintained by Evan Nemerson; when filing
+# bugs please mention @nemequ to make sure I see it.
+
+set(LZ4_TOP_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
+
+option(LZ4_BUILD_CLI "Build lz4 program" ON)
+option(LZ4_BUILD_LEGACY_LZ4C "Build lz4c program with legacy argument support" ON)
+
+# Parse version information
+file(STRINGS "${LZ4_TOP_SOURCE_DIR}/lib/lz4.h" LZ4_VERSION_MAJOR REGEX "^#define LZ4_VERSION_MAJOR +([0-9]+) +.*$")
+string(REGEX REPLACE "^#define LZ4_VERSION_MAJOR +([0-9]+) +.*$" "\\1" LZ4_VERSION_MAJOR "${LZ4_VERSION_MAJOR}")
+file(STRINGS "${LZ4_TOP_SOURCE_DIR}/lib/lz4.h" LZ4_VERSION_MINOR REGEX "^#define LZ4_VERSION_MINOR +([0-9]+) +.*$")
+string(REGEX REPLACE "^#define LZ4_VERSION_MINOR +([0-9]+) +.*$" "\\1" LZ4_VERSION_MINOR "${LZ4_VERSION_MINOR}")
+file(STRINGS "${LZ4_TOP_SOURCE_DIR}/lib/lz4.h" LZ4_VERSION_RELEASE REGEX "^#define LZ4_VERSION_RELEASE +([0-9]+) +.*$")
+string(REGEX REPLACE "^#define LZ4_VERSION_RELEASE +([0-9]+) +.*$" "\\1" LZ4_VERSION_RELEASE "${LZ4_VERSION_RELEASE}")
+set(LZ4_VERSION_STRING "${LZ4_VERSION_MAJOR}.${LZ4_VERSION_MINOR}.${LZ4_VERSION_RELEASE}")
+mark_as_advanced(LZ4_VERSION_STRING LZ4_VERSION_MAJOR LZ4_VERSION_MINOR LZ4_VERSION_RELEASE)
+
+if("${CMAKE_VERSION}" VERSION_LESS "3.0")
+  project(LZ4 C)
+else()
+  cmake_policy (SET CMP0048 NEW)
+  project(LZ4
+    VERSION ${LZ4_VERSION_STRING}
+    LANGUAGES C)
+endif()
+
+cmake_minimum_required (VERSION 2.8.12)
+
+# If LZ4 is being bundled in another project, we don't want to
+# install anything.  However, we want to let people override this, so
+# we'll use the LZ4_BUNDLED_MODE variable to let them do that; just
+# set it to OFF in your project before you add_subdirectory(lz4/contrib/cmake_unofficial).
+get_directory_property(LZ4_PARENT_DIRECTORY PARENT_DIRECTORY)
+if("${LZ4_BUNDLED_MODE}" STREQUAL "")
+  # Bundled mode hasn't been set one way or the other, set the default
+  # depending on whether or not we are the top-level project.
+  if("${LZ4_PARENT_DIRECTORY}" STREQUAL "")
+    set(LZ4_BUNDLED_MODE OFF)
+  else()
+    set(LZ4_BUNDLED_MODE ON)
+  endif()
+endif()
+mark_as_advanced(LZ4_BUNDLED_MODE)
+
+# CPack
+if(NOT LZ4_BUNDLED_MODE AND NOT CPack_CMake_INCLUDED)
+  set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "LZ4 compression library")
+  set(CPACK_PACKAGE_DESCRIPTION_FILE "${LZ4_TOP_SOURCE_DIR}/README.md")
+  set(CPACK_RESOURCE_FILE_LICENSE "${LZ4_TOP_SOURCE_DIR}/LICENSE")
+  set(CPACK_PACKAGE_VERSION_MAJOR ${LZ4_VERSION_MAJOR})
+  set(CPACK_PACKAGE_VERSION_MINOR ${LZ4_VERSION_MINOR})
+  set(CPACK_PACKAGE_VERSION_PATCH ${LZ4_VERSION_RELEASE})
+  include(CPack)
+endif(NOT LZ4_BUNDLED_MODE AND NOT CPack_CMake_INCLUDED)
+
+# Allow people to choose whether to build shared or static libraries
+# via the BUILD_SHARED_LIBS option unless we are in bundled mode, in
+# which case we always use static libraries.
+include(CMakeDependentOption)
+CMAKE_DEPENDENT_OPTION(BUILD_SHARED_LIBS "Build shared libraries" ON "NOT LZ4_BUNDLED_MODE" OFF)
+CMAKE_DEPENDENT_OPTION(BUILD_STATIC_LIBS "Build static libraries" OFF "BUILD_SHARED_LIBS" ON)
+
+if(NOT BUILD_SHARED_LIBS AND NOT BUILD_STATIC_LIBS)
+  message(FATAL_ERROR "Both BUILD_SHARED_LIBS and BUILD_STATIC_LIBS have been disabled")
+endif()
+
+set(LZ4_LIB_SOURCE_DIR "${LZ4_TOP_SOURCE_DIR}/lib")
+set(LZ4_PROG_SOURCE_DIR "${LZ4_TOP_SOURCE_DIR}/programs")
+
+include_directories("${LZ4_LIB_SOURCE_DIR}")
+
+# CLI sources
+set(LZ4_SOURCES
+  "${LZ4_LIB_SOURCE_DIR}/lz4.c"
+  "${LZ4_LIB_SOURCE_DIR}/lz4hc.c"
+  "${LZ4_LIB_SOURCE_DIR}/lz4.h"
+  "${LZ4_LIB_SOURCE_DIR}/lz4hc.h"
+  "${LZ4_LIB_SOURCE_DIR}/lz4frame.c"
+  "${LZ4_LIB_SOURCE_DIR}/lz4frame.h"
+  "${LZ4_LIB_SOURCE_DIR}/xxhash.c")
+set(LZ4_CLI_SOURCES
+  "${LZ4_PROG_SOURCE_DIR}/bench.c"
+  "${LZ4_PROG_SOURCE_DIR}/lz4cli.c"
+  "${LZ4_PROG_SOURCE_DIR}/lz4io.c"
+  "${LZ4_PROG_SOURCE_DIR}/datagen.c")
+
+# Whether to use position independent code for the static library.  If
+# we're building a shared library this is ignored and PIC is always
+# used.
+option(LZ4_POSITION_INDEPENDENT_LIB "Use position independent code for static library (if applicable)" ON)
+
+# liblz4
+set(LZ4_LIBRARIES_BUILT)
+if(BUILD_SHARED_LIBS)
+  add_library(lz4_shared SHARED ${LZ4_SOURCES})
+  target_include_directories(lz4_shared
+    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+    INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+  set_target_properties(lz4_shared PROPERTIES
+    OUTPUT_NAME lz4
+    SOVERSION "${LZ4_VERSION_MAJOR}"
+    VERSION "${LZ4_VERSION_STRING}")
+  if(MSVC)
+    target_compile_definitions(lz4_shared PRIVATE
+      LZ4_DLL_EXPORT=1)
+  endif()
+  list(APPEND LZ4_LIBRARIES_BUILT lz4_shared)
+endif()
+if(BUILD_STATIC_LIBS)
+  set(STATIC_LIB_NAME lz4)
+  if (MSVC AND BUILD_SHARED_LIBS)
+    set(STATIC_LIB_NAME lz4_static)
+  endif()
+  add_library(lz4_static STATIC ${LZ4_SOURCES})
+  target_include_directories(lz4_static
+    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+    INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+  set_target_properties(lz4_static PROPERTIES
+    OUTPUT_NAME ${STATIC_LIB_NAME}
+    POSITION_INDEPENDENT_CODE ${LZ4_POSITION_INDEPENDENT_LIB})
+  list(APPEND LZ4_LIBRARIES_BUILT lz4_static)
+endif()
+
+if(BUILD_STATIC_LIBS)
+  set(LZ4_LINK_LIBRARY lz4_static)
+else()
+  list(APPEND LZ4_CLI_SOURCES ${LZ4_SOURCES})
+endif()
+
+# lz4
+if (LZ4_BUILD_CLI)
+  set(LZ4_PROGRAMS_BUILT lz4cli)
+  add_executable(lz4cli ${LZ4_CLI_SOURCES})
+  set_target_properties(lz4cli PROPERTIES OUTPUT_NAME lz4)
+  if (BUILD_STATIC_LIBS)
+    target_link_libraries(lz4cli ${LZ4_LINK_LIBRARY})
+  endif()
+endif()
+
+# lz4c
+if (LZ4_BUILD_LEGACY_LZ4C)
+  list(APPEND LZ4_PROGRAMS_BUILT lz4c)
+  add_executable(lz4c ${LZ4_CLI_SOURCES})
+  set_target_properties(lz4c PROPERTIES COMPILE_DEFINITIONS "ENABLE_LZ4C_LEGACY_OPTIONS")
+  if (BUILD_STATIC_LIBS)
+    target_link_libraries(lz4c ${LZ4_LINK_LIBRARY})
+  endif()
+endif()
+
+# Extra warning flags
+include (CheckCCompilerFlag)
+foreach (flag
+    # GCC-style
+    -Wall
+    -Wextra
+    -Wundef
+    -Wcast-qual
+    -Wcast-align
+    -Wshadow
+    -Wswitch-enum
+    -Wdeclaration-after-statement
+    -Wstrict-prototypes
+    -Wpointer-arith
+
+    # MSVC-style
+    /W4)
+  # Because https://gcc.gnu.org/wiki/FAQ#wnowarning
+  string(REGEX REPLACE "\\-Wno\\-(.+)" "-W\\1" flag_to_test "${flag}")
+  string(REGEX REPLACE "[^a-zA-Z0-9]+" "_" test_name "CFLAG_${flag_to_test}")
+
+  check_c_compiler_flag("${ADD_COMPILER_FLAGS_PREPEND} ${flag_to_test}" ${test_name})
+
+  if(${test_name})
+    set(CMAKE_C_FLAGS "${flag} ${CMAKE_C_FLAGS}")
+  endif()
+
+  unset(test_name)
+  unset(flag_to_test)
+endforeach (flag)
+
+if(NOT LZ4_BUNDLED_MODE)
+  include(GNUInstallDirs)
+
+  install(TARGETS ${LZ4_PROGRAMS_BUILT}
+    BUNDLE	DESTINATION "${CMAKE_INSTALL_BINDIR}"
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
+  install(TARGETS ${LZ4_LIBRARIES_BUILT}
+    EXPORT lz4Targets
+    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
+  install(FILES
+    "${LZ4_LIB_SOURCE_DIR}/lz4.h"
+    "${LZ4_LIB_SOURCE_DIR}/lz4frame.h"
+    "${LZ4_LIB_SOURCE_DIR}/lz4hc.h"
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+  install(FILES "${LZ4_PROG_SOURCE_DIR}/lz4.1"
+    DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
+  install(FILES "${CMAKE_CURRENT_BINARY_DIR}/liblz4.pc"
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+
+  include(CMakePackageConfigHelpers)
+  write_basic_package_version_file(
+    "${CMAKE_CURRENT_BINARY_DIR}/lz4ConfigVersion.cmake"
+    VERSION ${LZ4_VERSION_STRING}
+    COMPATIBILITY SameMajorVersion)
+
+  set(LZ4_PKG_INSTALLDIR "${CMAKE_INSTALL_LIBDIR}/cmake/lz4")
+  configure_package_config_file(
+    "${CMAKE_CURRENT_LIST_DIR}/lz4Config.cmake.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/lz4Config.cmake"
+    INSTALL_DESTINATION ${LZ4_PKG_INSTALLDIR})
+  export(EXPORT lz4Targets
+    FILE ${CMAKE_CURRENT_BINARY_DIR}/lz4Targets.cmake
+    NAMESPACE LZ4::)
+
+  install(EXPORT lz4Targets
+    FILE lz4Targets.cmake
+    NAMESPACE LZ4::
+    DESTINATION ${LZ4_PKG_INSTALLDIR})
+  install(FILES
+      ${CMAKE_CURRENT_BINARY_DIR}/lz4Config.cmake
+      ${CMAKE_CURRENT_BINARY_DIR}/lz4ConfigVersion.cmake
+    DESTINATION ${LZ4_PKG_INSTALLDIR})
+
+  # install lz4cat and unlz4 symlinks on *nix
+  if(UNIX AND LZ4_BUILD_CLI)
+    install(CODE "
+      foreach(f lz4cat unlz4)
+        set(dest \"\$ENV{DESTDIR}${CMAKE_INSTALL_FULL_BINDIR}/\${f}\")
+        message(STATUS \"Symlinking: \${dest} -> lz4\")
+        execute_process(
+          COMMAND \"${CMAKE_COMMAND}\" -E create_symlink lz4 \"\${dest}\")
+      endforeach()
+    ")
+
+    # create manpage aliases
+    foreach(f lz4cat unlz4)
+      file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/${f}.1" ".so man1/lz4.1\n")
+      install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${f}.1"
+        DESTINATION "${CMAKE_INSTALL_MANDIR}/man1")
+    endforeach()
+  endif(UNIX AND LZ4_BUILD_CLI)
+endif(NOT LZ4_BUNDLED_MODE)
+
+# pkg-config
+set(PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+if("${CMAKE_INSTALL_FULL_LIBDIR}" STREQUAL "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
+  set(LIBDIR "\${prefix}/${CMAKE_INSTALL_LIBDIR}")
+else()
+  set(LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}")
+endif()
+
+if("${CMAKE_INSTALL_FULL_INCLUDEDIR}" STREQUAL "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}")
+  set(INCLUDEDIR "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
+else()
+  set(INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+endif()
+
+# for liblz4.pc substitution
+set(VERSION ${LZ4_VERSION_STRING})
+configure_file(${LZ4_LIB_SOURCE_DIR}/liblz4.pc.in liblz4.pc @ONLY)

lz4.mod/lz4/build/cmake/lz4Config.cmake.in

@@ -0,0 +1,2 @@
+@PACKAGE_INIT@
+include( "${CMAKE_CURRENT_LIST_DIR}/lz4Targets.cmake" )

lz4.mod/lz4/contrib/debian/changelog

@@ -0,0 +1,10 @@
+liblz4 (1.7.2) unstable; urgency=low
+
+  * Changed : moved to versioning; package, cli and library have same version number
+  * Improved: Small decompression speed boost (+4%)
+  * Improved: Performance on ARMv6 and ARMv7
+  * Added : Debianization, by Evgeniy Polyakov
+  * Makefile: Generates object files (*.o) for faster (re)compilation on low power systems
+  * Fix : cli : crash on some invalid inputs
+
+ -- Yann Collet <[email protected]>  Sun, 28 Jun 2015 01:00:00 +0000

lz4.mod/lz4/contrib/debian/compat

@@ -0,0 +1 @@
+7

lz4.mod/lz4/contrib/debian/control

@@ -0,0 +1,23 @@
+Source: liblz4
+Section: devel
+Priority: optional
+Maintainer: Evgeniy Polyakov <[email protected]>
+Build-Depends:
+ cmake (>= 2.6),
+ debhelper (>= 7.0.50~),
+ cdbs
+Standards-Version: 3.8.0
+Homepage: http://www.lz4.org/
+Vcs-Git: git://github.com/lz4/lz4.git
+Vcs-Browser: https://github.com/lz4/lz4
+
+Package: liblz4
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: Extremely Fast Compression algorithm http://www.lz4.org
+
+Package: liblz4-dev
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: Extremely Fast Compression algorithm http://www.lz4.org
+ Development files.

lz4.mod/lz4/contrib/debian/copyright

@@ -0,0 +1,9 @@
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: liblz4
+Upstream-Contact: Yann Collet <[email protected]>
+Source: https://github.com/lz4/lz4
+
+Files: *
+Copyright: (C) 2011-2020 Yann Collet
+License: GPL-2+
+ The full text of license: https://github.com/lz4/lz4/blob/dev/lib/LICENSE

lz4.mod/lz4/contrib/debian/dirs

@@ -0,0 +1 @@
+usr/bin

lz4.mod/lz4/contrib/debian/liblz4-dev.install

@@ -0,0 +1,2 @@
+usr/include/lz4*
+usr/lib/liblz4.so

lz4.mod/lz4/contrib/debian/liblz4.install

@@ -0,0 +1,2 @@
+usr/lib/liblz4.so.*
+usr/bin/*

lz4.mod/lz4/contrib/debian/rules

@@ -0,0 +1,7 @@
+#!/usr/bin/make -f
+
+include /usr/share/cdbs/1/rules/debhelper.mk
+include /usr/share/cdbs/1/class/cmake.mk
+
+
+DEB_CMAKE_EXTRA_FLAGS := -DCMAKE_BUILD_TYPE=RelWithDebInfo ../../build/cmake

lz4.mod/lz4/contrib/djgpp/LICENSE

@@ -0,0 +1,24 @@
+Copyright (c) 2014, lpsantil
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+

lz4.mod/lz4/contrib/djgpp/Makefile

@@ -0,0 +1,130 @@
+# Copyright (c) 2015, Louis P. Santillan <[email protected]>
+# All rights reserved.
+# See LICENSE for licensing details.
+DESTDIR ?= /opt/local
+
+# Pulled the code below from lib/Makefile.  Might be nicer to derive this somehow without sed
+# Version numbers
+VERSION ?= 129
+RELEASE ?= r$(VERSION)
+LIBVER_MAJOR=$(shell sed -n '/define LZ4_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < lib/lz4.h)
+LIBVER_MINOR=$(shell sed -n '/define LZ4_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < lib/lz4.h)
+LIBVER_PATCH=$(shell sed -n '/define LZ4_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < lib/lz4.h)
+LIBVER=$(LIBVER_MAJOR).$(LIBVER_MINOR).$(LIBVER_PATCH)
+
+######################################################################
+
+CROSS ?= i586-pc-msdosdjgpp
+CC = $(CROSS)-gcc
+AR = $(CROSS)-ar
+LD = $(CROSS)-gcc
+
+CFLAGS ?= -O3 -std=gnu99 -Wall -Wextra -Wundef -Wshadow -Wcast-qual -Wcast-align -Wstrict-prototypes -pedantic -DLZ4_VERSION=\"$(RELEASE)\"
+LDFLAGS ?= -s
+SRC = programs/bench.c programs/lz4io.c programs/lz4cli.c
+OBJ = $(SRC:.c=.o)
+SDEPS = $(SRC:.c=.d)
+IDIR = lib
+EDIR = .
+EXE = lz4.exe
+LNK = lz4
+LDIR = lib
+LSRC = lib/lz4.c lib/lz4hc.c lib/lz4frame.c lib/xxhash.c
+INC = $(LSRC:.c=.h)
+LOBJ = $(LSRC:.c=.o)
+LSDEPS = $(LSRC:.c=.d)
+LIB = $(LDIR)/lib$(LNK).a
+
+# Since LDFLAGS defaults to "-s", probably better to override unless
+# you have a default you would like to maintain
+ifeq ($(WITH_DEBUG), 1)
+	CFLAGS += -g
+	LDFLAGS += -g
+endif
+
+# Since LDFLAGS defaults to "-s", probably better to override unless
+# you have a default you would like to maintain
+ifeq ($(WITH_PROFILING), 1)
+	CFLAGS += -pg
+	LDFLAGS += -pg
+endif
+
+%.o: %.c $(INC) Makefile
+	$(CC) $(CFLAGS) -MMD -MP -I$(IDIR) -c $< -o $@
+
+%.exe: %.o $(LIB) Makefile
+	$(LD) $< -L$(LDIR) -l$(LNK) $(LDFLAGS) $(LIBDEP) -o $@
+
+######################################################################
+######################## DO NOT MODIFY BELOW #########################
+######################################################################
+
+.PHONY: all install uninstall showconfig gstat gpush
+
+all: $(LIB) $(EXE)
+
+$(LIB): $(LOBJ)
+	$(AR) -rcs $@ $^
+
+$(EXE): $(LOBJ) $(OBJ)
+	$(LD) $(LDFLAGS) $(LOBJ) $(OBJ) -o $(EDIR)/$@
+
+clean:
+	rm -f $(OBJ) $(EXE) $(LOBJ) $(LIB) *.tmp $(SDEPS) $(LSDEPS) $(TSDEPS)
+
+install: $(INC) $(LIB) $(EXE)
+	mkdir -p $(DESTDIR)/bin $(DESTDIR)/include $(DESTDIR)/lib
+	rm -f .footprint
+	echo $(DESTDIR)/bin/$(EXE) >> .footprint
+	cp -v $(EXE) $(DESTDIR)/bin/
+	@for T in $(LIB); \
+	do ( \
+		echo $(DESTDIR)/$$T >> .footprint; \
+		cp -v --parents $$T $(DESTDIR) \
+	); done
+	@for T in $(INC); \
+	do ( \
+		echo $(DESTDIR)/include/`basename -a $$T` >> .footprint; \
+		cp -v $$T $(DESTDIR)/include/ \
+	); done
+
+uninstall: .footprint
+	@for T in $(shell cat .footprint); do rm -v $$T; done
+
+-include $(SDEPS) $(LSDEPS)
+
+showconfig:
+	@echo "PWD="$(PWD)
+	@echo "VERSION="$(VERSION)
+	@echo "RELEASE="$(RELEASE)
+	@echo "LIBVER_MAJOR="$(LIBVER_MAJOR)
+	@echo "LIBVER_MINOR="$(LIBVER_MINOR)
+	@echo "LIBVER_PATCH="$(LIBVER_PATCH)
+	@echo "LIBVER="$(LIBVER)
+	@echo "CROSS="$(CROSS)
+	@echo "CC="$(CC)
+	@echo "AR="$(AR)
+	@echo "LD="$(LD)
+	@echo "DESTDIR="$(DESTDIR)
+	@echo "CFLAGS="$(CFLAGS)
+	@echo "LDFLAGS="$(LDFLAGS)
+	@echo "SRC="$(SRC)
+	@echo "OBJ="$(OBJ)
+	@echo "IDIR="$(IDIR)
+	@echo "INC="$(INC)
+	@echo "EDIR="$(EDIR)
+	@echo "EXE="$(EXE)
+	@echo "LDIR="$(LDIR)
+	@echo "LSRC="$(LSRC)
+	@echo "LOBJ="$(LOBJ)
+	@echo "LNK="$(LNK)
+	@echo "LIB="$(LIB)
+	@echo "SDEPS="$(SDEPS)
+	@echo "LSDEPS="$(LSDEPS)
+
+gstat:
+	git status
+
+gpush:
+	git commit
+	git push

lz4.mod/lz4/contrib/djgpp/README.MD

@@ -0,0 +1,21 @@
+# lz4 for DOS/djgpp
+This file details on how to compile lz4.exe, and liblz4.a for use on DOS/djgpp using
+Andrew Wu's build-djgpp cross compilers ([GH][0], [Binaries][1]) on OSX, Linux.
+
+## Setup
+* Download a djgpp tarball [binaries][1] for your platform.  
+* Extract and install it (`tar jxvf djgpp-linux64-gcc492.tar.bz2`).  Note the path.  We'll assume `/home/user/djgpp`.
+* Add the `bin` folder to your `PATH`.  In bash, do `export PATH=/home/user/djgpp/bin:$PATH`.
+* The `Makefile` in `contrib/djgpp/` sets up `CC`, `AR`, `LD` for you.  So, `CC=i586-pc-msdosdjgpp-gcc`, `AR=i586-pc-msdosdjgpp-ar`, `LD=i586-pc-msdosdjgpp-gcc`.
+
+## Building LZ4 for DOS
+In the base dir of lz4 and with `contrib/djgpp/Makefile`, try:
+Try:
+* `make -f contrib/djgpp/Makefile`
+* `make -f contrib/djgpp/Makefile liblz4.a`
+* `make -f contrib/djgpp/Makefile lz4.exe`
+* `make -f contrib/djgpp/Makefile DESTDIR=/home/user/dos install`, however it doesn't make much sense on a \*nix.
+* You can also do `make -f contrib/djgpp/Makefile uninstall`
+
+[0]: https://github.com/andrewwutw/build-djgpp
+[1]: https://github.com/andrewwutw/build-djgpp/releases

lz4.mod/lz4/contrib/gen_manual/.gitignore

@@ -0,0 +1,2 @@
+# build artefact
+gen_manual

lz4.mod/lz4/contrib/gen_manual/Makefile

@@ -0,0 +1,76 @@
+# ################################################################
+# Copyright (C) Przemyslaw Skibinski 2016-present
+# All rights reserved.
+#
+# BSD license
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice, this
+#   list of conditions and the following disclaimer in the documentation and/or
+#   other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# You can contact the author at :
+#  - LZ4 source repository : https://github.com/Cyan4973/lz4
+#  - LZ4 forum froup : https://groups.google.com/forum/#!forum/lz4c
+# ################################################################
+
+
+CXXFLAGS ?= -O2
+CXXFLAGS += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow -Wstrict-aliasing=1 -Wswitch-enum -Wno-comment
+CPPFLAGS += $(MOREFLAGS)
+FLAGS   = $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS)
+
+LZ4API = ../../lib/lz4.h
+LZ4MANUAL = ../../doc/lz4_manual.html
+LZ4FAPI = ../../lib/lz4frame.h
+LZ4FMANUAL = ../../doc/lz4frame_manual.html
+LIBVER_MAJOR_SCRIPT:=`sed -n '/define LZ4_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LZ4API)`
+LIBVER_MINOR_SCRIPT:=`sed -n '/define LZ4_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LZ4API)`
+LIBVER_PATCH_SCRIPT:=`sed -n '/define LZ4_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(LZ4API)`
+LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
+LZ4VER := $(shell echo $(LIBVER_SCRIPT))
+
+# Define *.exe as extension for Windows systems
+ifneq (,$(filter Windows%,$(OS)))
+EXT =.exe
+else
+EXT =
+endif
+
+
+.PHONY: default
+default: gen_manual
+
+gen_manual: gen_manual.cpp
+	$(CXX) $(FLAGS) $^ -o $@$(EXT)
+
+$(LZ4MANUAL) : gen_manual $(LZ4API)
+	echo "Update lz4 manual in /doc"
+	./gen_manual $(LZ4VER) $(LZ4API) $@
+
+$(LZ4FMANUAL) : gen_manual $(LZ4FAPI)
+	echo "Update lz4frame manual in /doc"
+	./gen_manual $(LZ4VER) $(LZ4FAPI) $@
+
+.PHONY: manuals
+manuals: $(LZ4MANUAL) $(LZ4FMANUAL)
+
+.PHONY: clean
+clean:
+	@$(RM) gen_manual$(EXT)
+	@echo Cleaning completed

lz4.mod/lz4/contrib/gen_manual/README.md

@@ -0,0 +1,31 @@
+gen_manual - a program for automatic generation of manual from source code
+==========================================================================
+
+#### Introduction
+
+This simple C++ program generates a single-page HTML manual from `lz4.h`.
+
+The format of recognized comment blocks is following:
+- comments of type `/*!` mean: this is a function declaration; switch comments with declarations
+- comments of type `/**` and `/*-` mean: this is a comment; use a `<H2>` header for the first line
+- comments of type `/*=` and `/**=` mean: use a `<H3>` header and show also all functions until first empty line
+- comments of type `/*X` where `X` is different from above-mentioned are ignored
+
+Moreover:
+- `LZ4LIB_API` is removed to improve readability
+- `typedef` are detected and included even if uncommented
+- comments of type `/**<` and `/*!<` are detected and only function declaration is highlighted (bold)
+
+
+#### Usage
+
+The program requires 3 parameters:
+```
+gen_manual [lz4_version] [input_file] [output_html]
+```
+
+To compile program and generate lz4 manual we have used:
+```
+make
+./gen_manual.exe 1.7.3 ../../lib/lz4.h lz4_manual.html
+```

lz4.mod/lz4/contrib/gen_manual/gen-lz4-manual.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+LIBVER_MAJOR_SCRIPT=`sed -n '/define LZ4_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ../../lib/lz4.h`
+LIBVER_MINOR_SCRIPT=`sed -n '/define LZ4_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ../../lib/lz4.h`
+LIBVER_PATCH_SCRIPT=`sed -n '/define LZ4_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ../../lib/lz4.h`
+LIBVER_SCRIPT=$LIBVER_MAJOR_SCRIPT.$LIBVER_MINOR_SCRIPT.$LIBVER_PATCH_SCRIPT
+
+echo LZ4_VERSION=$LIBVER_SCRIPT
+./gen_manual "lz4 $LIBVER_SCRIPT" ../../lib/lz4.h ./lz4_manual.html
+./gen_manual "lz4frame $LIBVER_SCRIPT" ../../lib/lz4frame.h ./lz4frame_manual.html

lz4.mod/lz4/contrib/gen_manual/gen_manual.cpp

@@ -0,0 +1,248 @@
+/*
+Copyright (c) 2016-present, Przemyslaw Skibinski
+All rights reserved.
+
+BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+You can contact the author at :
+- LZ4 homepage : http://www.lz4.org
+- LZ4 source repository : https://github.com/lz4/lz4
+*/
+
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+using namespace std;
+
+
+/* trim string at the beginning and at the end */
+void trim(string& s, string characters)
+{
+    size_t p = s.find_first_not_of(characters);
+    s.erase(0, p);
+
+    p = s.find_last_not_of(characters);
+    if (string::npos != p)
+       s.erase(p+1);
+}
+
+
+/* trim C++ style comments */
+void trim_comments(string &s)
+{
+    size_t spos, epos;
+
+    spos = s.find("/*");
+    epos = s.find("*/");
+    s = s.substr(spos+3, epos-(spos+3));
+}
+
+
+/* get lines until a given terminator */
+vector<string> get_lines(vector<string>& input, int& linenum, string terminator)
+{
+    vector<string> out;
+    string line;
+
+    while ((size_t)linenum < input.size()) {
+        line = input[linenum];
+
+        if (terminator.empty() && line.empty()) { linenum--; break; }
+
+        size_t const epos = line.find(terminator);
+        if (!terminator.empty() && epos!=string::npos) {
+            out.push_back(line);
+            break;
+        }
+        out.push_back(line);
+        linenum++;
+    }
+    return out;
+}
+
+
+/* print line with LZ4LIB_API removed and C++ comments not bold */
+void print_line(stringstream &sout, string line)
+{
+    size_t spos, epos;
+
+    if (line.substr(0,11) == "LZ4LIB_API ") line = line.substr(11);
+    if (line.substr(0,12) == "LZ4FLIB_API ") line = line.substr(12);
+    spos = line.find("/*");
+    epos = line.find("*/");
+    if (spos!=string::npos && epos!=string::npos) {
+        sout << line.substr(0, spos);
+        sout << "</b>" << line.substr(spos) << "<b>" << '\n';
+    } else {
+        sout << line << '\n';
+    }
+}
+
+
+int main(int argc, char *argv[]) {
+    char exclam;
+    int linenum, chapter = 1;
+    vector<string> input, lines, comments, chapters;
+    string line, version;
+    size_t spos, l;
+    stringstream sout;
+    ifstream istream;
+    ofstream ostream;
+
+    if (argc < 4) {
+        cout << "usage: " << argv[0] << " [lz4_version] [input_file] [output_html]" << endl;
+        return 1;
+    }
+
+    version = string(argv[1]) + " Manual";
+
+    istream.open(argv[2], ifstream::in);
+    if (!istream.is_open()) {
+        cout << "Error opening file " << argv[2] << endl;
+        return 1;
+    }
+
+    ostream.open(argv[3], ifstream::out);
+    if (!ostream.is_open()) {
+        cout << "Error opening file " << argv[3] << endl;
+        return 1;
+   }
+
+    while (getline(istream, line)) {
+        input.push_back(line);
+    }
+
+    for (linenum=0; (size_t)linenum < input.size(); linenum++) {
+        line = input[linenum];
+
+        /* typedefs are detected and included even if uncommented */
+        if (line.substr(0,7) == "typedef" && line.find("{")!=string::npos) {
+            lines = get_lines(input, linenum, "}");
+            sout << "<pre><b>";
+            for (l=0; l<lines.size(); l++) {
+                print_line(sout, lines[l]);
+            }
+            sout << "</b></pre><BR>" << endl;
+            continue;
+        }
+
+        /* comments of type  / * * < and  / * ! <  are detected, and only function declaration is highlighted (bold) */
+        if ((line.find("/**<")!=string::npos || line.find("/*!<")!=string::npos)
+          && line.find("*/")!=string::npos) {
+            sout << "<pre><b>";
+            print_line(sout, line);
+            sout << "</b></pre><BR>" << endl;
+            continue;
+        }
+
+        spos = line.find("/**=");
+        if (spos==string::npos) {
+            spos = line.find("/*!");
+            if (spos==string::npos)
+                spos = line.find("/**");
+            if (spos==string::npos)
+                spos = line.find("/*-");
+            if (spos==string::npos)
+                spos = line.find("/*=");
+            if (spos==string::npos)
+                continue;
+            exclam = line[spos+2];
+        }
+        else exclam = '=';
+
+        comments = get_lines(input, linenum, "*/");
+        if (!comments.empty()) comments[0] = line.substr(spos+3);
+        if (!comments.empty())
+            comments[comments.size()-1] = comments[comments.size()-1].substr(0, comments[comments.size()-1].find("*/"));
+        for (l=0; l<comments.size(); l++) {
+            if (comments[l].compare(0, 2, " *") == 0)
+                comments[l] = comments[l].substr(2);
+            else if (comments[l].compare(0, 3, "  *") == 0)
+                comments[l] = comments[l].substr(3);
+            trim(comments[l], "*-=");
+        }
+        while (!comments.empty() && comments[comments.size()-1].empty()) comments.pop_back(); // remove empty line at the end
+        while (!comments.empty() && comments[0].empty()) comments.erase(comments.begin()); // remove empty line at the start
+
+        /* comments of type  / * !  mean: this is a function declaration; switch comments with declarations */
+        if (exclam == '!') {
+            if (!comments.empty()) comments.erase(comments.begin()); /* remove first line like "LZ4_XXX() :" */
+            linenum++;
+            lines = get_lines(input, linenum, "");
+
+            sout << "<pre><b>";
+            for (l=0; l<lines.size(); l++) {
+                print_line(sout, lines[l]);
+            }
+            sout << "</b><p>";
+            for (l=0; l<comments.size(); l++) {
+                print_line(sout, comments[l]);
+            }
+            sout << "</p></pre><BR>" << endl << endl;
+        } else if (exclam == '=') { /* comments of type  / * =  and  / * * =  mean: use a <H3> header and show also all functions until first empty line */
+            trim(comments[0], " ");
+            sout << "<h3>" << comments[0] << "</h3><pre>";
+            for (l=1; l<comments.size(); l++) {
+                print_line(sout, comments[l]);
+            }
+            sout << "</pre><b><pre>";
+            lines = get_lines(input, ++linenum, "");
+            for (l=0; l<lines.size(); l++) {
+                print_line(sout, lines[l]);
+            }
+            sout << "</pre></b><BR>" << endl;
+        } else { /* comments of type  / * *  and  / * -  mean: this is a comment; use a <H2> header for the first line */
+            if (comments.empty()) continue;
+
+            trim(comments[0], " ");
+            sout << "<a name=\"Chapter" << chapter << "\"></a><h2>" << comments[0] << "</h2><pre>";
+            chapters.push_back(comments[0]);
+            chapter++;
+
+            for (l=1; l<comments.size(); l++) {
+                print_line(sout, comments[l]);
+            }
+            if (comments.size() > 1)
+                sout << "<BR></pre>" << endl << endl;
+            else
+                sout << "</pre>" << endl << endl;
+        }
+    }
+
+    ostream << "<html>\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\">\n<title>" << version << "</title>\n</head>\n<body>" << endl;
+    ostream << "<h1>" << version << "</h1>\n";
+
+    ostream << "<hr>\n<a name=\"Contents\"></a><h2>Contents</h2>\n<ol>\n";
+    for (size_t i=0; i<chapters.size(); i++)
+        ostream << "<li><a href=\"#Chapter" << i+1 << "\">" << chapters[i].c_str() << "</a></li>\n";
+    ostream << "</ol>\n<hr>\n";
+
+    ostream << sout.str();
+    ostream << "</html>" << endl << "</body>" << endl;
+
+    return 0;
+}

lz4.mod/lz4/contrib/meson/README.md

@@ -0,0 +1,34 @@
+Meson build system for lz4
+==========================
+
+Meson is a build system designed to optimize programmer productivity.
+It aims to do this by providing simple, out-of-the-box support for
+modern software development tools and practices, such as unit tests,
+coverage reports, Valgrind, CCache and the like.
+
+This Meson build system is provided with no guarantee.
+
+## How to build
+
+`cd` to this meson directory (`contrib/meson`)
+
+```sh
+meson setup --buildtype=release -Ddefault_library=shared -Dbin_programs=true builddir
+cd builddir
+ninja             # to build
+ninja install     # to install
+```
+
+You might want to install it in staging directory:
+
+```sh
+DESTDIR=./staging ninja install
+```
+
+To configure build options, use:
+
+```sh
+meson configure
+```
+
+See [man meson(1)](https://manpages.debian.org/testing/meson/meson.1.en.html).

lz4.mod/lz4/contrib/meson/meson.build

@@ -0,0 +1,21 @@
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+# This is a dummy meson file.
+# The intention is that it can be easily moved to the root of the project
+# (together with meson_options.txt) and packaged for wrapdb.
+
+project('lz4', ['c'],
+  license: ['BSD', 'GPLv2'],
+  default_options : ['c_std=c99',
+    'buildtype=release'],
+  version: 'DUMMY',
+  meson_version: '>=0.47.0')
+
+subdir('meson')

lz4.mod/lz4/contrib/meson/meson/GetLz4LibraryVersion.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+import re
+
+
+def find_version_tuple(filepath):
+  version_file_data = None
+  with open(filepath) as fd:
+    version_file_data = fd.read()
+
+  patterns = r"""#\s*define\s+LZ4_VERSION_MAJOR\s+([0-9]+).*$
+#\s*define\s+LZ4_VERSION_MINOR\s+([0-9]+).*$
+#\s*define\s+LZ4_VERSION_RELEASE\s+([0-9]+).*$
+"""
+  regex = re.compile(patterns, re.MULTILINE)
+  version_match = regex.search(version_file_data)
+  if version_match:
+    return version_match.groups()
+  raise Exception("Unable to find version string.")
+
+
+def main():
+  import argparse
+  parser = argparse.ArgumentParser(description='Print lz4 version from lib/lz4.h')
+  parser.add_argument('file', help='path to lib/lz4.h')
+  args = parser.parse_args()
+  version_tuple = find_version_tuple(args.file)
+  print('.'.join(version_tuple))
+
+
+if __name__ == '__main__':
+  main()

lz4.mod/lz4/contrib/meson/meson/InstallSymlink.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+# #############################################################################
+# Copyright (c) 2018-present  lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+# This file should be synced with https://github.com/lzutao/meson-symlink
+
+import os
+import pathlib  # since Python 3.4
+
+
+def install_symlink(src, dst, install_dir, dst_is_dir=False, dir_mode=0o777):
+  if not install_dir.exists():
+    install_dir.mkdir(mode=dir_mode, parents=True, exist_ok=True)
+  if not install_dir.is_dir():
+    raise NotADirectoryError(install_dir)
+
+  new_dst = install_dir.joinpath(dst)
+  if new_dst.is_symlink() and os.readlink(new_dst) == src:
+    print('File exists: {!r} -> {!r}'.format(new_dst, src))
+    return
+  print('Installing symlink {!r} -> {!r}'.format(new_dst, src))
+  new_dst.symlink_to(src, target_is_directory=dst_is_dir)
+
+
+def main():
+  import argparse
+  parser = argparse.ArgumentParser(description='Install a symlink',
+      usage='{0} [-h] [-d] [-m MODE] source dest install_dir\n\n'
+            'example:\n'
+            '        {0} dash sh /bin'.format(pathlib.Path(__file__).name))
+  parser.add_argument('source', help='target to link')
+  parser.add_argument('dest', help='link name')
+  parser.add_argument('install_dir', help='installation directory')
+  parser.add_argument('-d', '--isdir',
+      action='store_true',
+      help='dest is a directory')
+  parser.add_argument('-m', '--mode',
+      help='directory mode on creating if not exist',
+      default='0o755')
+  args = parser.parse_args()
+
+  dir_mode = int(args.mode, 8)
+
+  meson_destdir = os.environ.get('MESON_INSTALL_DESTDIR_PREFIX', default='')
+  install_dir = pathlib.Path(meson_destdir, args.install_dir)
+  install_symlink(args.source, args.dest, install_dir, args.isdir, dir_mode)
+
+
+if __name__ == '__main__':
+  main()

lz4.mod/lz4/contrib/meson/meson/contrib/gen_manual/meson.build

@@ -0,0 +1,43 @@
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+lz4_root_dir = '../../../../..'
+
+add_languages('cpp')
+cxx = meson.get_compiler('cpp')
+
+gen_manual_includes = include_directories(join_paths(lz4_root_dir, 'contrib/gen_manual'))
+
+gen_manual_cppflags = cxx.get_supported_arguments(['-Wextra', '-Wcast-qual',
+  '-Wcast-align', '-Wshadow', '-Wstrict-aliasing=1', '-Wswitch-enum',
+  '-Wno-comment'])
+
+gen_manual = executable('gen_manual',
+  join_paths(lz4_root_dir, 'contrib/gen_manual/gen_manual.cpp'),
+  cpp_args: gen_manual_cppflags,
+  include_directories: gen_manual_includes,
+  native: true,
+  install: false)
+
+# Update lz4 manual
+lz4_manual_html = custom_target('lz4_manual.html',
+  output : 'lz4_manual.html',
+  command : [gen_manual,
+    lz4_version,
+    join_paths(meson.current_source_dir(), lz4_root_dir, 'lib/lz4.h'),
+    '@OUTPUT@'],
+  install : false)
+# Update lz4frame manual
+lz4_manual_html = custom_target('lz4frame_manual.html',
+  output : 'lz4frame_manual.html',
+  command : [gen_manual,
+    lz4_version,
+    join_paths(meson.current_source_dir(), lz4_root_dir, 'lib/lz4frame.h'),
+    '@OUTPUT@'],
+  install : false)

lz4.mod/lz4/contrib/meson/meson/contrib/meson.build

@@ -0,0 +1,10 @@
+# #############################################################################
+# Copyright (c) 2018-present        lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+subdir('gen_manual')

lz4.mod/lz4/contrib/meson/meson/examples/meson.build

@@ -0,0 +1,49 @@
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+lz4_root_dir = '../../../..'
+
+#examples_c_args = ['-Wextra', '-Wundef', '-Wshadow', '-Wcast-align', '-Wstrict-prototypes']
+
+printVersion = executable('printVersion',
+  join_paths(lz4_root_dir, 'examples/printVersion.c'),
+  dependencies: liblz4_dep,
+  install: false)
+doubleBuffer = executable('doubleBuffer',
+  join_paths(lz4_root_dir, 'examples/blockStreaming_doubleBuffer.c'),
+  dependencies: liblz4_dep,
+  install: false)
+dictionaryRandomAccess = executable('dictionaryRandomAccess',
+  join_paths(lz4_root_dir, 'examples/dictionaryRandomAccess.c'),
+  dependencies: liblz4_dep,
+  install: false)
+ringBuffer = executable('ringBuffer',
+  join_paths(lz4_root_dir, 'examples/blockStreaming_ringBuffer.c'),
+  dependencies: liblz4_dep,
+  install: false)
+ringBufferHC = executable('ringBufferHC',
+  join_paths(lz4_root_dir, 'examples/HCStreaming_ringBuffer.c'),
+  dependencies: liblz4_dep,
+  install: false)
+lineCompress = executable('lineCompress',
+  join_paths(lz4_root_dir, 'examples/blockStreaming_lineByLine.c'),
+  dependencies: liblz4_dep,
+  install: false)
+frameCompress = executable('frameCompress',
+  join_paths(lz4_root_dir, 'examples/frameCompress.c'),
+  dependencies: liblz4_dep,
+  install: false)
+compressFunctions = executable('compressFunctions',
+  join_paths(lz4_root_dir, 'examples/compress_functions.c'),
+  dependencies: liblz4_dep,
+  install: false)
+simpleBuffer = executable('simpleBuffer',
+  join_paths(lz4_root_dir, 'examples/simple_buffer.c'),
+  dependencies: liblz4_dep,
+  install: false)

lz4.mod/lz4/contrib/meson/meson/lib/meson.build

@@ -0,0 +1,57 @@
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+lz4_root_dir = '../../../..'
+
+liblz4_includes = [include_directories(join_paths(lz4_root_dir, 'lib'))]
+liblz4_sources = [join_paths(lz4_root_dir, 'lib/lz4.c'),
+  join_paths(lz4_root_dir, 'lib/lz4frame.c'),
+  join_paths(lz4_root_dir, 'lib/lz4hc.c'),
+  join_paths(lz4_root_dir, 'lib/xxhash.c')]
+liblz4_c_args = []
+
+liblz4_debug_cflags = []
+if use_debug
+  liblz4_c_args += '-DLZ4_DEBUG=@0@'.format(debug_level)
+  if [compiler_gcc, compiler_clang].contains(cc_id)
+    liblz4_debug_cflags = ['-Wextra', '-Wcast-qual', '-Wcast-align', '-Wshadow',
+      '-Wswitch-enum', '-Wdeclaration-after-statement', '-Wstrict-prototypes',
+      '-Wundef', '-Wpointer-arith', '-Wstrict-aliasing=1']
+  endif
+endif
+liblz4_c_args += cc.get_supported_arguments(liblz4_debug_cflags)
+
+if host_machine_os == os_windows and default_library != 'static'
+  liblz4_c_args += '-DLZ4_DLL_EXPORT=1'
+endif
+
+liblz4 = library('lz4',
+  liblz4_sources,
+  include_directories: liblz4_includes,
+  c_args: liblz4_c_args,
+  install: true,
+  version: lz4_libversion)
+
+liblz4_dep = declare_dependency(link_with: liblz4,
+  include_directories: liblz4_includes)
+
+pkgconfig.generate(liblz4,
+  name: 'lz4',
+  filebase: 'liblz4',
+  description: 'extremely fast lossless compression algorithm library',
+  version: lz4_libversion,
+  url: 'http://www.lz4.org/')
+
+install_headers(join_paths(lz4_root_dir, 'lib/lz4.h'),
+  join_paths(lz4_root_dir, 'lib/lz4hc.h'),
+  join_paths(lz4_root_dir, 'lib/lz4frame.h'))
+
+if default_library != 'shared'
+  install_headers(join_paths(lz4_root_dir, 'lib/lz4frame_static.h'))
+endif

lz4.mod/lz4/contrib/meson/meson/meson.build

@@ -0,0 +1,117 @@
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+cc = meson.get_compiler('c')
+pkgconfig = import('pkgconfig')
+c_std = get_option('c_std')
+default_library = get_option('default_library')
+
+host_machine_os = host_machine.system()
+os_windows = 'windows'
+os_linux = 'linux'
+os_darwin = 'darwin'
+os_freebsd = 'freebsd'
+os_sun = 'sunos'
+
+cc_id = cc.get_id()
+compiler_gcc = 'gcc'
+compiler_clang = 'clang'
+compiler_msvc = 'msvc'
+
+lz4_version = meson.project_version()
+
+lz4_h_file = join_paths(meson.current_source_dir(), '../../../lib/lz4.h')
+GetLz4LibraryVersion_py = find_program('GetLz4LibraryVersion.py', native : true)
+r = run_command(GetLz4LibraryVersion_py, lz4_h_file)
+if r.returncode() == 0
+  lz4_version = r.stdout().strip()
+  message('Project version is now: @0@'.format(lz4_version))
+else
+  error('Cannot find project version in @0@'.format(lz4_h_file))
+endif
+
+lz4_libversion = lz4_version
+
+# =============================================================================
+# Installation directories
+# =============================================================================
+
+lz4_prefix = get_option('prefix')
+lz4_bindir = get_option('bindir')
+lz4_datadir = get_option('datadir')
+lz4_mandir = get_option('mandir')
+lz4_docdir = join_paths(lz4_datadir, 'doc', meson.project_name())
+
+# =============================================================================
+# Project options
+# =============================================================================
+
+buildtype = get_option('buildtype')
+
+# Built-in options
+use_debug = get_option('debug')
+
+# Custom options
+debug_level = get_option('debug_level')
+use_backtrace = get_option('backtrace')
+
+bin_programs = get_option('bin_programs')
+bin_contrib = get_option('bin_contrib')
+bin_tests = get_option('bin_tests')
+bin_examples = get_option('bin_examples')
+#feature_multi_thread = get_option('multi_thread')
+
+# =============================================================================
+# Dependencies
+# =============================================================================
+
+#libm_dep = cc.find_library('m', required: bin_tests)
+#thread_dep = dependency('threads', required: feature_multi_thread)
+#use_multi_thread = thread_dep.found()
+
+# =============================================================================
+# Compiler flags
+# =============================================================================
+
+add_project_arguments(['-DXXH_NAMESPACE=LZ4_'], language: 'c')
+
+if [compiler_gcc, compiler_clang].contains(cc_id)
+  common_warning_flags = []
+  # Should use Meson's own --werror build option
+  #common_warning_flags += ['-Werror']
+  if c_std == 'c89' or c_std == 'gnu89'
+    common_warning_flags += ['-pedantic', '-Wno-long-long', '-Wno-variadic-macros']
+  elif c_std == 'c99' or c_std == 'gnu99'
+    common_warning_flags += ['-pedantic']
+  endif
+  cc_compile_flags = cc.get_supported_arguments(common_warning_flags)
+  add_project_arguments(cc_compile_flags, language: 'c')
+endif
+
+# =============================================================================
+# Subdirs
+# =============================================================================
+
+subdir('lib')
+
+if bin_programs
+  subdir('programs')
+endif
+
+if bin_tests
+  subdir('tests')
+endif
+
+if bin_contrib
+  subdir('contrib')
+endif
+
+if bin_examples
+  subdir('examples')
+endif

lz4.mod/lz4/contrib/meson/meson/programs/meson.build

@@ -0,0 +1,52 @@
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+lz4_root_dir = '../../../..'
+
+lz4_includes = include_directories(join_paths(lz4_root_dir, 'programs'))
+lz4_sources = [join_paths(lz4_root_dir, 'programs/bench.c'),
+  join_paths(lz4_root_dir, 'programs/datagen.c'),
+  join_paths(lz4_root_dir, 'programs/lz4cli.c'),
+  join_paths(lz4_root_dir, 'programs/lz4io.c')]
+lz4_c_args = []
+
+export_dynamic_on_windows = false
+# explicit backtrace enable/disable for Linux & Darwin
+if not use_backtrace
+  lz4_c_args += '-DBACKTRACE_ENABLE=0'
+elif use_debug and host_machine_os == os_windows  # MinGW target
+  lz4_c_args += '-DBACKTRACE_ENABLE=1'
+  export_dynamic_on_windows = true
+endif
+
+lz4_deps = [ liblz4_dep ]
+
+lz4 = executable('lz4',
+  lz4_sources,
+  include_directories: lz4_includes,
+  c_args: lz4_c_args,
+  dependencies: lz4_deps,
+  export_dynamic: export_dynamic_on_windows, # Since Meson 0.45.0
+  install: true)
+
+# =============================================================================
+# Programs and manpages installing
+# =============================================================================
+
+install_man(join_paths(lz4_root_dir, 'programs/lz4.1'))
+
+InstallSymlink_py = '../InstallSymlink.py'
+lz4_man1_dir = join_paths(lz4_mandir, 'man1')
+bin_EXT = host_machine_os == os_windows ? '.exe' : ''
+man1_EXT = meson.version().version_compare('>=0.49.0') ? '.1' : '.1.gz'
+
+foreach f : ['lz4c', 'lz4cat', 'unlz4']
+  meson.add_install_script(InstallSymlink_py, 'lz4' + bin_EXT, f + bin_EXT, lz4_bindir)
+  meson.add_install_script(InstallSymlink_py, 'lz4' + man1_EXT, f + man1_EXT, lz4_man1_dir)
+endforeach

lz4.mod/lz4/contrib/meson/meson/tests/meson.build

@@ -0,0 +1,93 @@
+# #############################################################################
+# Copyright (c) 2018-present    lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+lz4_root_dir = '../../../..'
+programs_dir_inc = include_directories(join_paths(lz4_root_dir, 'programs'))
+lib_dir_inc = include_directories(join_paths(lz4_root_dir, 'lib'))
+
+# =============================================================================
+# Test flags
+# =============================================================================
+
+TEST_FILES   = join_paths(meson.current_source_dir(), lz4_root_dir, 'tests/COPYING')
+FUZZER_TIME  = '-T90s'
+NB_LOOPS     = '-i1'
+
+# =============================================================================
+# Executables
+# =============================================================================
+
+fullbench_sources = [join_paths(lz4_root_dir, 'tests/fullbench.c')]
+fullbench = executable('fullbench',
+  fullbench_sources,
+  include_directories: programs_dir_inc,
+  dependencies: liblz4_dep,
+  install: false)
+
+fuzzer_sources = [join_paths(lz4_root_dir, 'tests/fuzzer.c')]
+fuzzer = executable('fuzzer',
+  fuzzer_sources,
+  c_args: ['-D_DEFAULT_SOURCE', '-D_BSD_SOURCE'], # since glibc 2.19
+  include_directories: programs_dir_inc,
+  dependencies: liblz4_dep,
+  install: false)
+
+frametest_sources = [join_paths(lz4_root_dir, 'tests/frametest.c')]
+frametest = executable('frametest',
+  frametest_sources,
+  include_directories: programs_dir_inc,
+  dependencies: liblz4_dep,
+  install: false)
+
+roundTripTest_sources = [join_paths(lz4_root_dir, 'tests/roundTripTest.c')]
+roundTripTest = executable('roundTripTest',
+  roundTripTest_sources,
+  dependencies: [ liblz4_dep ],
+  install: false)
+
+datagen_sources = [join_paths(lz4_root_dir, 'tests/datagencli.c')]
+datagen = executable('datagen',
+  datagen_sources,
+  objects: lz4.extract_objects(join_paths(lz4_root_dir, 'programs/datagen.c')),
+  include_directories: lz4_includes,
+  dependencies: [ liblz4_dep ],
+  install: false)
+
+checkFrame_sources = [join_paths(lz4_root_dir, 'tests/checkFrame.c')]
+checkFrame = executable('checkFrame',
+  checkFrame_sources,
+  include_directories: programs_dir_inc,
+  dependencies: [ liblz4_dep ],
+  install: false)
+
+checkTag_sources = [join_paths(lz4_root_dir, 'tests/checkTag.c')]
+checkTag = executable('checkTag',
+  checkTag_sources,
+  include_directories: lib_dir_inc,
+  install: false)
+
+# =============================================================================
+# Tests (Use "meson test --list" to list all tests)
+# =============================================================================
+
+# XXX: (Need TEST) These timeouts (in seconds) when running on a HDD should be
+# at least six times bigger than on a SSD
+
+test('test-fullbench',
+  fullbench,
+  args: ['--no-prompt', NB_LOOPS, TEST_FILES],
+  timeout: 420) # Should enough when running on HDD
+test('test-fuzzer',
+  fuzzer,
+  args: [FUZZER_TIME],
+  timeout: 100)
+test('test-frametest',
+  frametest,
+  args: [FUZZER_TIME],
+  timeout: 100)

lz4.mod/lz4/contrib/meson/meson_options.txt

@@ -0,0 +1,24 @@
+# #############################################################################
+# Copyright (c) 2018-present        lzutao <taolzu(at)gmail.com>
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# #############################################################################
+
+# Read guidelines from https://wiki.gnome.org/Initiatives/GnomeGoals/MesonPorting
+
+option('debug_level', type: 'integer', min: 0, max: 7, value: 1,
+  description: 'Enable run-time debug. See lib/lz4hc.c')
+option('backtrace', type: 'boolean', value: false,
+  description: 'Display a stack backtrace when execution generates a runtime exception')
+
+option('bin_programs', type: 'boolean', value: false,
+  description: 'Enable programs build')
+option('bin_tests', type: 'boolean', value: false,
+  description: 'Enable tests build')
+option('bin_contrib', type: 'boolean', value: false,
+  description: 'Enable contrib build')
+option('bin_examples', type: 'boolean', value: false,
+  description: 'Enable examples build')

lz4.mod/lz4/contrib/snap/README.md

@@ -0,0 +1,29 @@
+Snap Packaging
+--------------
+
+This directory contains the config required to generate a snap package
+of lz4. Snaps are universal Linux packages that allow you to easily
+build your application from any source and ship it to any Linux
+distribution by publishing it to https://snapcraft.io/. A key attribute
+of a snap package is that it is (ideally) confined such that it
+executes within a controlled environmenti with all its dependencies
+bundled with it and does not share dependencies with of from any other
+package on the system (with a couple of minor exceptions).
+
+The basic anatomy and workflow is:
+
+  * ensure snap.snapcraft.yaml is up-to-date e.g. with version info
+
+  * build the snap by installing the snapcraft package and running it
+
+  * push snap/* changes to the repo (excluding any crud generated by a build of course)
+
+  * register yourself as owner of lz4 name in snapstore
+
+  * publish new snap to the snap store
+
+  * install snap by doing 'snap install lz4' on any Linux distro
+
+  * all installed copies of lz4 will be automatically updated to your new version
+
+For more information on Snaps see https://docs.snapcraft.io and https://forum.snapcraft.io/

lz4.mod/lz4/contrib/snap/snapcraft.yaml

@@ -0,0 +1,31 @@
+name: lz4
+version: 1.9.3 
+summary: Extremely Fast Compression algorithm 
+description: >
+    LZ4 is lossless compression algorithm, providing compression
+    speed > 500 MB/s per core, scalable with multi-cores CPU. It features an
+    extremely fast decoder, with speed in multiple GB/s per core, typically
+    reaching RAM speed limits on multi-core systems.
+    .
+    Speed can be tuned dynamically, selecting an "acceleration" factor which
+    trades compression ratio for faster speed. On the other end, a high
+    compression derivative, LZ4_HC, is also provided, trading CPU time for
+    improved compression ratio. All versions feature the same decompression
+    speed.
+    .
+    LZ4 is also compatible with dictionary compression, and can ingest any
+    input file as dictionary, including those created by Zstandard Dictionary
+    Builder. (note: only the final 64KB are used).
+    .
+    LZ4 library is provided as open-source software using BSD 2-Clause license.
+confinement: strict
+grade: stable
+
+apps:
+  lz4:
+    command: usr/local/bin/lz4
+    plugs: [home]
+parts:
+  lz4:
+    source: ../
+    plugin: make

lz4.mod/lz4/doc/lz4_Block_format.md

@@ -0,0 +1,156 @@
+LZ4 Block Format Description
+============================
+Last revised: 2019-03-30.
+Author : Yann Collet
+
+
+This specification is intended for developers
+willing to produce LZ4-compatible compressed data blocks
+using any programming language.
+
+LZ4 is an LZ77-type compressor with a fixed, byte-oriented encoding.
+There is no entropy encoder back-end nor framing layer.
+The latter is assumed to be handled by other parts of the system
+(see [LZ4 Frame format]).
+This design is assumed to favor simplicity and speed.
+It helps later on for optimizations, compactness, and features.
+
+This document describes only the block format,
+not how the compressor nor decompressor actually work.
+The correctness of the decompressor should not depend
+on implementation details of the compressor, and vice versa.
+
+[LZ4 Frame format]: lz4_Frame_format.md
+
+
+
+Compressed block format
+-----------------------
+An LZ4 compressed block is composed of sequences.
+A sequence is a suite of literals (not-compressed bytes),
+followed by a match copy.
+
+Each sequence starts with a `token`.
+The `token` is a one byte value, separated into two 4-bits fields.
+Therefore each field ranges from 0 to 15.
+
+
+The first field uses the 4 high-bits of the token.
+It provides the length of literals to follow.
+
+If the field value is 0, then there is no literal.
+If it is 15, then we need to add some more bytes to indicate the full length.
+Each additional byte then represent a value from 0 to 255,
+which is added to the previous value to produce a total length.
+When the byte value is 255, another byte is output.
+There can be any number of bytes following `token`. There is no "size limit".
+(Side note : this is why a not-compressible input block is expanded by 0.4%).
+
+Example 1 : A literal length of 48 will be represented as :
+
+  - 15 : value for the 4-bits High field
+  - 33 : (=48-15) remaining length to reach 48
+
+Example 2 : A literal length of 280 will be represented as :
+
+  - 15  : value for the 4-bits High field
+  - 255 : following byte is maxed, since 280-15 >= 255
+  - 10  : (=280 - 15 - 255) ) remaining length to reach 280
+
+Example 3 : A literal length of 15 will be represented as :
+
+  - 15 : value for the 4-bits High field
+  - 0  : (=15-15) yes, the zero must be output
+
+Following `token` and optional length bytes, are the literals themselves.
+They are exactly as numerous as previously decoded (length of literals).
+It's possible that there are zero literals.
+
+
+Following the literals is the match copy operation.
+
+It starts by the `offset`.
+This is a 2 bytes value, in little endian format
+(the 1st byte is the "low" byte, the 2nd one is the "high" byte).
+
+The `offset` represents the position of the match to be copied from.
+1 means "current position - 1 byte".
+The maximum `offset` value is 65535, 65536 cannot be coded.
+Note that 0 is an invalid value, not used.
+
+Then we need to extract the `matchlength`.
+For this, we use the second token field, the low 4-bits.
+Value, obviously, ranges from 0 to 15.
+However here, 0 means that the copy operation will be minimal.
+The minimum length of a match, called `minmatch`, is 4.
+As a consequence, a 0 value means 4 bytes, and a value of 15 means 19+ bytes.
+Similar to literal length, on reaching the highest possible value (15),
+we output additional bytes, one at a time, with values ranging from 0 to 255.
+They are added to total to provide the final match length.
+A 255 value means there is another byte to read and add.
+There is no limit to the number of optional bytes that can be output this way.
+(This points towards a maximum achievable compression ratio of about 250).
+
+Decoding the `matchlength` reaches the end of current sequence.
+Next byte will be the start of another sequence.
+But before moving to next sequence,
+it's time to use the decoded match position and length.
+The decoder copies `matchlength` bytes from match position to current position.
+
+In some cases, `matchlength` is larger than `offset`.
+Therefore, `match_pos + matchlength > current_pos`,
+which means that later bytes to copy are not yet decoded.
+This is called an "overlap match", and must be handled with special care.
+A common case is an offset of 1,
+meaning the last byte is repeated `matchlength` times.
+
+
+End of block restrictions
+-----------------------
+There are specific rules required to terminate a block.
+
+1. The last sequence contains only literals.
+   The block ends right after them.
+2. The last 5 bytes of input are always literals.
+   Therefore, the last sequence contains at least 5 bytes.
+   - Special : if input is smaller than 5 bytes,
+     there is only one sequence, it contains the whole input as literals.
+     Empty input can be represented with a zero byte,
+     interpreted as a final token without literal and without a match.
+3. The last match must start at least 12 bytes before the end of block.
+   The last match is part of the penultimate sequence.
+   It is followed by the last sequence, which contains only literals.
+   - Note that, as a consequence,
+     an independent block < 13 bytes cannot be compressed,
+     because the match must copy "something",
+     so it needs at least one prior byte.
+   - When a block can reference data from another block,
+     it can start immediately with a match and no literal,
+     so a block of 12 bytes can be compressed.
+
+When a block does not respect these end conditions,
+a conformant decoder is allowed to reject the block as incorrect.
+
+These rules are in place to ensure that a conformant decoder
+can be designed for speed, issuing speculatively instructions,
+while never reading nor writing beyond provided I/O buffers.
+
+
+Additional notes
+-----------------------
+If the decoder will decompress data from an external source,
+it is recommended to ensure that the decoder will not be vulnerable to
+buffer overflow manipulations.
+Always ensure that read and write operations
+remain within the limits of provided buffers.
+Test the decoder with fuzzers
+to ensure it's resilient to improbable combinations.
+
+The format makes no assumption nor limits to the way the compressor
+searches and selects matches within the source data block.
+Multiple techniques can be considered,
+featuring distinct time / performance trade offs.
+As long as the format is respected,
+the result will be compatible and decodable by any compliant decoder.
+An upper compression limit can be reached,
+using a technique called "full optimal parsing", at high cpu cost.

lz4.mod/lz4/doc/lz4_Frame_format.md

@@ -0,0 +1,433 @@
+LZ4 Frame Format Description
+============================
+
+### Notices
+
+Copyright (c) 2013-2020 Yann Collet
+
+Permission is granted to copy and distribute this document
+for any purpose and without charge,
+including translations into other languages
+and incorporation into compilations,
+provided that the copyright notice and this notice are preserved,
+and that any substantive changes or deletions from the original
+are clearly marked.
+Distribution of this document is unlimited.
+
+### Version
+
+1.6.2 (12/08/2020)
+
+
+Introduction
+------------
+
+The purpose of this document is to define a lossless compressed data format,
+that is independent of CPU type, operating system,
+file system and character set, suitable for
+File compression, Pipe and streaming compression
+using the [LZ4 algorithm](http://www.lz4.org).
+
+The data can be produced or consumed,
+even for an arbitrarily long sequentially presented input data stream,
+using only an a priori bounded amount of intermediate storage,
+and hence can be used in data communications.
+The format uses the LZ4 compression method,
+and optional [xxHash-32 checksum method](https://github.com/Cyan4973/xxHash),
+for detection of data corruption.
+
+The data format defined by this specification
+does not attempt to allow random access to compressed data.
+
+This specification is intended for use by implementers of software
+to compress data into LZ4 format and/or decompress data from LZ4 format.
+The text of the specification assumes a basic background in programming
+at the level of bits and other primitive data representations.
+
+Unless otherwise indicated below,
+a compliant compressor must produce data sets
+that conform to the specifications presented here.
+It doesn't need to support all options though.
+
+A compliant decompressor must be able to decompress
+at least one working set of parameters
+that conforms to the specifications presented here.
+It may also ignore checksums.
+Whenever it does not support a specific parameter within the compressed stream,
+it must produce a non-ambiguous error code
+and associated error message explaining which parameter is unsupported.
+
+
+General Structure of LZ4 Frame format
+-------------------------------------
+
+| MagicNb | F. Descriptor | Block | (...) | EndMark | C. Checksum |
+|:-------:|:-------------:| ----- | ----- | ------- | ----------- |
+| 4 bytes |  3-15 bytes   |       |       | 4 bytes | 0-4 bytes   |
+
+__Magic Number__
+
+4 Bytes, Little endian format.
+Value : 0x184D2204
+
+__Frame Descriptor__
+
+3 to 15 Bytes, to be detailed in its own paragraph,
+as it is the most important part of the spec.
+
+The combined _Magic_Number_ and _Frame_Descriptor_ fields are sometimes
+called ___LZ4 Frame Header___. Its size varies between 7 and 19 bytes.
+
+__Data Blocks__
+
+To be detailed in its own paragraph.
+That’s where compressed data is stored.
+
+__EndMark__
+
+The flow of blocks ends when the last data block is followed by
+the 32-bit value `0x00000000`.
+
+__Content Checksum__
+
+_Content_Checksum_ verify that the full content has been decoded correctly.
+The content checksum is the result of [xxHash-32 algorithm]
+digesting the original (decoded) data as input, and a seed of zero.
+Content checksum is only present when its associated flag
+is set in the frame descriptor.
+Content Checksum validates the result,
+that all blocks were fully transmitted in the correct order and without error,
+and also that the encoding/decoding process itself generated no distortion.
+Its usage is recommended.
+
+The combined _EndMark_ and _Content_Checksum_ fields might sometimes be
+referred to as ___LZ4 Frame Footer___. Its size varies between 4 and 8 bytes.
+
+__Frame Concatenation__
+
+In some circumstances, it may be preferable to append multiple frames,
+for example in order to add new data to an existing compressed file
+without re-framing it.
+
+In such case, each frame has its own set of descriptor flags.
+Each frame is considered independent.
+The only relation between frames is their sequential order.
+
+The ability to decode multiple concatenated frames
+within a single stream or file
+is left outside of this specification.
+As an example, the reference lz4 command line utility behavior is
+to decode all concatenated frames in their sequential order.
+
+
+Frame Descriptor
+----------------
+
+| FLG     | BD      | (Content Size) | (Dictionary ID) | HC      |
+| ------- | ------- |:--------------:|:---------------:| ------- |
+| 1 byte  | 1 byte  |  0 - 8 bytes   |   0 - 4 bytes   | 1 byte  |
+
+The descriptor uses a minimum of 3 bytes,
+and up to 15 bytes depending on optional parameters.
+
+__FLG byte__
+
+|  BitNb  |  7-6  |   5   |    4     |  3   |    2     |    1     |   0  |
+| ------- |-------|-------|----------|------|----------|----------|------|
+|FieldName|Version|B.Indep|B.Checksum|C.Size|C.Checksum|*Reserved*|DictID|
+
+
+__BD byte__
+
+|  BitNb  |     7    |     6-5-4     |  3-2-1-0 |
+| ------- | -------- | ------------- | -------- |
+|FieldName|*Reserved*| Block MaxSize |*Reserved*|
+
+In the tables, bit 7 is highest bit, while bit 0 is lowest.
+
+__Version Number__
+
+2-bits field, must be set to `01`.
+Any other value cannot be decoded by this version of the specification.
+Other version numbers will use different flag layouts.
+
+__Block Independence flag__
+
+If this flag is set to “1”, blocks are independent.
+If this flag is set to “0”, each block depends on previous ones
+(up to LZ4 window size, which is 64 KB).
+In such case, it’s necessary to decode all blocks in sequence.
+
+Block dependency improves compression ratio, especially for small blocks.
+On the other hand, it makes random access or multi-threaded decoding impossible.
+
+__Block checksum flag__
+
+If this flag is set, each data block will be followed by a 4-bytes checksum,
+calculated by using the xxHash-32 algorithm on the raw (compressed) data block.
+The intention is to detect data corruption (storage or transmission errors)
+immediately, before decoding.
+Block checksum usage is optional.
+
+__Content Size flag__
+
+If this flag is set, the uncompressed size of data included within the frame
+will be present as an 8 bytes unsigned little endian value, after the flags.
+Content Size usage is optional.
+
+__Content checksum flag__
+
+If this flag is set, a 32-bits content checksum will be appended
+after the EndMark.
+
+__Dictionary ID flag__
+
+If this flag is set, a 4-bytes Dict-ID field will be present,
+after the descriptor flags and the Content Size.
+
+__Block Maximum Size__
+
+This information is useful to help the decoder allocate memory.
+Size here refers to the original (uncompressed) data size.
+Block Maximum Size is one value among the following table :
+
+|  0  |  1  |  2  |  3  |   4   |   5    |  6   |  7   |
+| --- | --- | --- | --- | ----- | ------ | ---- | ---- |
+| N/A | N/A | N/A | N/A | 64 KB | 256 KB | 1 MB | 4 MB |
+
+The decoder may refuse to allocate block sizes above any system-specific size.
+Unused values may be used in a future revision of the spec.
+A decoder conformant with the current version of the spec
+is only able to decode block sizes defined in this spec.
+
+__Reserved bits__
+
+Value of reserved bits **must** be 0 (zero).
+Reserved bit might be used in a future version of the specification,
+typically enabling new optional features.
+When this happens, a decoder respecting the current specification version
+shall not be able to decode such a frame.
+
+__Content Size__
+
+This is the original (uncompressed) size.
+This information is optional, and only present if the associated flag is set.
+Content size is provided using unsigned 8 Bytes, for a maximum of 16 Exabytes.
+Format is Little endian.
+This value is informational, typically for display or memory allocation.
+It can be skipped by a decoder, or used to validate content correctness.
+
+__Dictionary ID__
+
+Dict-ID is only present if the associated flag is set.
+It's an unsigned 32-bits value, stored using little-endian convention.
+A dictionary is useful to compress short input sequences.
+The compressor can take advantage of the dictionary context
+to encode the input in a more compact manner.
+It works as a kind of “known prefix” which is used by
+both the compressor and the decompressor to “warm-up” reference tables.
+
+The decompressor can use Dict-ID identifier to determine
+which dictionary must be used to correctly decode data.
+The compressor and the decompressor must use exactly the same dictionary.
+It's presumed that the 32-bits dictID uniquely identifies a dictionary.
+
+Within a single frame, a single dictionary can be defined.
+When the frame descriptor defines independent blocks,
+each block will be initialized with the same dictionary.
+If the frame descriptor defines linked blocks,
+the dictionary will only be used once, at the beginning of the frame.
+
+__Header Checksum__
+
+One-byte checksum of combined descriptor fields, including optional ones.
+The value is the second byte of `xxh32()` : ` (xxh32()>>8) & 0xFF `
+using zero as a seed, and the full Frame Descriptor as an input
+(including optional fields when they are present).
+A wrong checksum indicates an error in the descriptor.
+Header checksum is informational and can be skipped.
+
+
+Data Blocks
+-----------
+
+| Block Size |  data  | (Block Checksum) |
+|:----------:| ------ |:----------------:|
+|  4 bytes   |        |   0 - 4 bytes    |
+
+
+__Block Size__
+
+This field uses 4-bytes, format is little-endian.
+
+If the highest bit is set (`1`), the block is uncompressed.
+
+If the highest bit is not set (`0`), the block is LZ4-compressed,
+using the [LZ4 block format specification](https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md).
+
+All other bits give the size, in bytes, of the data section.
+The size does not include the block checksum if present.
+
+_Block_Size_ shall never be larger than _Block_Maximum_Size_.
+Such an outcome could potentially happen for non-compressible sources.
+In such a case, such data block must be passed using uncompressed format.
+
+A value of `0x00000000` is invalid, and signifies an _EndMark_ instead.
+Note that this is different from a value of `0x80000000` (highest bit set),
+which is an uncompressed block of size 0 (empty),
+which is valid, and therefore doesn't end a frame.
+Note that, if _Block_checksum_ is enabled,
+even an empty block must be followed by a 32-bit block checksum.
+
+__Data__
+
+Where the actual data to decode stands.
+It might be compressed or not, depending on previous field indications.
+
+When compressed, the data must respect the [LZ4 block format specification](https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md).
+
+Note that a block is not necessarily full.
+Uncompressed size of data can be any size __up to__ _Block_Maximum_Size_,
+so it may contain less data than the maximum block size.
+
+__Block checksum__
+
+Only present if the associated flag is set.
+This is a 4-bytes checksum value, in little endian format,
+calculated by using the [xxHash-32 algorithm] on the __raw__ (undecoded) data block,
+and a seed of zero.
+The intention is to detect data corruption (storage or transmission errors)
+before decoding.
+
+_Block_checksum_ can be cumulative with _Content_checksum_.
+
+[xxHash-32 algorithm]: https://github.com/Cyan4973/xxHash/blob/release/doc/xxhash_spec.md
+
+
+Skippable Frames
+----------------
+
+| Magic Number | Frame Size | User Data |
+|:------------:|:----------:| --------- |
+|   4 bytes    |  4 bytes   |           |
+
+Skippable frames allow the integration of user-defined data
+into a flow of concatenated frames.
+Its design is pretty straightforward,
+with the sole objective to allow the decoder to quickly skip
+over user-defined data and continue decoding.
+
+For the purpose of facilitating identification,
+it is discouraged to start a flow of concatenated frames with a skippable frame.
+If there is a need to start such a flow with some user data
+encapsulated into a skippable frame,
+it’s recommended to start with a zero-byte LZ4 frame
+followed by a skippable frame.
+This will make it easier for file type identifiers.
+
+
+__Magic Number__
+
+4 Bytes, Little endian format.
+Value : 0x184D2A5X, which means any value from 0x184D2A50 to 0x184D2A5F.
+All 16 values are valid to identify a skippable frame.
+
+__Frame Size__
+
+This is the size, in bytes, of the following User Data
+(without including the magic number nor the size field itself).
+4 Bytes, Little endian format, unsigned 32-bits.
+This means User Data can’t be bigger than (2^32-1) Bytes.
+
+__User Data__
+
+User Data can be anything. Data will just be skipped by the decoder.
+
+
+Legacy frame
+------------
+
+The Legacy frame format was defined into the initial versions of “LZ4Demo”.
+Newer compressors should not use this format anymore, as it is too restrictive.
+
+Main characteristics of the legacy format :
+
+- Fixed block size : 8 MB.
+- All blocks must be completely filled, except the last one.
+- All blocks are always compressed, even when compression is detrimental.
+- The last block is detected either because
+  it is followed by the “EOF” (End of File) mark,
+  or because it is followed by a known Frame Magic Number.
+- No checksum
+- Convention is Little endian
+
+| MagicNb | B.CSize | CData | B.CSize | CData |  (...)  | EndMark |
+| ------- | ------- | ----- | ------- | ----- | ------- | ------- |
+| 4 bytes | 4 bytes | CSize | 4 bytes | CSize | x times |   EOF   |
+
+
+__Magic Number__
+
+4 Bytes, Little endian format.
+Value : 0x184C2102
+
+__Block Compressed Size__
+
+This is the size, in bytes, of the following compressed data block.
+4 Bytes, Little endian format.
+
+__Data__
+
+Where the actual compressed data stands.
+Data is always compressed, even when compression is detrimental.
+
+__EndMark__
+
+End of legacy frame is implicit only.
+It must be followed by a standard EOF (End Of File) signal,
+whether it is a file or a stream.
+
+Alternatively, if the frame is followed by a valid Frame Magic Number,
+it is considered completed.
+This policy makes it possible to concatenate legacy frames.
+
+Any other value will be interpreted as a block size,
+and trigger an error if it does not fit within acceptable range.
+
+
+Version changes
+---------------
+
+1.6.2 : clarifies specification of _EndMark_
+
+1.6.1 : introduced terms "LZ4 Frame Header" and "LZ4 Frame Footer"
+
+1.6.0 : restored Dictionary ID field in Frame header
+
+1.5.1 : changed document format to MarkDown
+
+1.5 : removed Dictionary ID from specification
+
+1.4.1 : changed wording from “stream” to “frame”
+
+1.4 : added skippable streams, re-added stream checksum
+
+1.3 : modified header checksum
+
+1.2 : reduced choice of “block size”, to postpone decision on “dynamic size of BlockSize Field”.
+
+1.1 : optional fields are now part of the descriptor
+
+1.0 : changed “block size” specification, adding a compressed/uncompressed flag
+
+0.9 : reduced scale of “block maximum size” table
+
+0.8 : removed : high compression flag
+
+0.7 : removed : stream checksum
+
+0.6 : settled : stream size uses 8 bytes, endian convention is little endian
+
+0.5: added copyright notice
+
+0.4 : changed format to Google Doc compatible OpenDocument

lz4.mod/lz4/doc/lz4_manual.html

@@ -0,0 +1,597 @@
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>1.9.3 Manual</title>
+</head>
+<body>
+<h1>1.9.3 Manual</h1>
+<hr>
+<a name="Contents"></a><h2>Contents</h2>
+<ol>
+<li><a href="#Chapter1">Introduction</a></li>
+<li><a href="#Chapter2">Version</a></li>
+<li><a href="#Chapter3">Tuning parameter</a></li>
+<li><a href="#Chapter4">Simple Functions</a></li>
+<li><a href="#Chapter5">Advanced Functions</a></li>
+<li><a href="#Chapter6">Streaming Compression Functions</a></li>
+<li><a href="#Chapter7">Streaming Decompression Functions</a></li>
+<li><a href="#Chapter8">Experimental section</a></li>
+<li><a href="#Chapter9">Private Definitions</a></li>
+<li><a href="#Chapter10">Obsolete Functions</a></li>
+</ol>
+<hr>
+<a name="Chapter1"></a><h2>Introduction</h2><pre>
+  LZ4 is lossless compression algorithm, providing compression speed >500 MB/s per core,
+  scalable with multi-cores CPU. It features an extremely fast decoder, with speed in
+  multiple GB/s per core, typically reaching RAM speed limits on multi-core systems.
+
+  The LZ4 compression library provides in-memory compression and decompression functions.
+  It gives full buffer control to user.
+  Compression can be done in:
+    - a single step (described as Simple Functions)
+    - a single step, reusing a context (described in Advanced Functions)
+    - unbounded multiple steps (described as Streaming compression)
+
+  lz4.h generates and decodes LZ4-compressed blocks (doc/lz4_Block_format.md).
+  Decompressing such a compressed block requires additional metadata.
+  Exact metadata depends on exact decompression function.
+  For the typical case of LZ4_decompress_safe(),
+  metadata includes block's compressed size, and maximum bound of decompressed size.
+  Each application is free to encode and pass such metadata in whichever way it wants.
+
+  lz4.h only handle blocks, it can not generate Frames.
+
+  Blocks are different from Frames (doc/lz4_Frame_format.md).
+  Frames bundle both blocks and metadata in a specified manner.
+  Embedding metadata is required for compressed data to be self-contained and portable.
+  Frame format is delivered through a companion API, declared in lz4frame.h.
+  The `lz4` CLI can only manage frames.
+<BR></pre>
+
+<a name="Chapter2"></a><h2>Version</h2><pre></pre>
+
+<pre><b>int LZ4_versionNumber (void);  </b>/**< library version number; useful to check dll version */<b>
+</b></pre><BR>
+<pre><b>const char* LZ4_versionString (void);   </b>/**< library version string; useful to check dll version */<b>
+</b></pre><BR>
+<a name="Chapter3"></a><h2>Tuning parameter</h2><pre></pre>
+
+<pre><b>#ifndef LZ4_MEMORY_USAGE
+# define LZ4_MEMORY_USAGE 14
+#endif
+</b><p> Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.)
+ Increasing memory usage improves compression ratio.
+ Reduced memory usage may improve speed, thanks to better cache locality.
+ Default value is 14, for 16KB, which nicely fits into Intel x86 L1 cache
+ 
+</p></pre><BR>
+
+<a name="Chapter4"></a><h2>Simple Functions</h2><pre></pre>
+
+<pre><b>int LZ4_compress_default(const char* src, char* dst, int srcSize, int dstCapacity);
+</b><p>  Compresses 'srcSize' bytes from buffer 'src'
+  into already allocated 'dst' buffer of size 'dstCapacity'.
+  Compression is guaranteed to succeed if 'dstCapacity' >= LZ4_compressBound(srcSize).
+  It also runs faster, so it's a recommended setting.
+  If the function cannot compress 'src' into a more limited 'dst' budget,
+  compression stops *immediately*, and the function result is zero.
+  In which case, 'dst' content is undefined (invalid).
+      srcSize : max supported value is LZ4_MAX_INPUT_SIZE.
+      dstCapacity : size of buffer 'dst' (which must be already allocated)
+     @return  : the number of bytes written into buffer 'dst' (necessarily <= dstCapacity)
+                or 0 if compression fails
+ Note : This function is protected against buffer overflow scenarios (never writes outside 'dst' buffer, nor read outside 'source' buffer).
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_decompress_safe (const char* src, char* dst, int compressedSize, int dstCapacity);
+</b><p>  compressedSize : is the exact complete size of the compressed block.
+  dstCapacity : is the size of destination buffer (which must be already allocated), presumed an upper bound of decompressed size.
+ @return : the number of bytes decompressed into destination buffer (necessarily <= dstCapacity)
+           If destination buffer is not large enough, decoding will stop and output an error code (negative value).
+           If the source stream is detected malformed, the function will stop decoding and return a negative result.
+ Note 1 : This function is protected against malicious data packets :
+          it will never writes outside 'dst' buffer, nor read outside 'source' buffer,
+          even if the compressed block is maliciously modified to order the decoder to do these actions.
+          In such case, the decoder stops immediately, and considers the compressed block malformed.
+ Note 2 : compressedSize and dstCapacity must be provided to the function, the compressed block does not contain them.
+          The implementation is free to send / store / derive this information in whichever way is most beneficial.
+          If there is a need for a different format which bundles together both compressed data and its metadata, consider looking at lz4frame.h instead.
+ 
+</p></pre><BR>
+
+<a name="Chapter5"></a><h2>Advanced Functions</h2><pre></pre>
+
+<pre><b>int LZ4_compressBound(int inputSize);
+</b><p>    Provides the maximum size that LZ4 compression may output in a "worst case" scenario (input data not compressible)
+    This function is primarily useful for memory allocation purposes (destination buffer size).
+    Macro LZ4_COMPRESSBOUND() is also provided for compilation-time evaluation (stack memory allocation for example).
+    Note that LZ4_compress_default() compresses faster when dstCapacity is >= LZ4_compressBound(srcSize)
+        inputSize  : max supported value is LZ4_MAX_INPUT_SIZE
+        return : maximum output size in a "worst case" scenario
+              or 0, if input size is incorrect (too large or negative)
+</p></pre><BR>
+
+<pre><b>int LZ4_compress_fast (const char* src, char* dst, int srcSize, int dstCapacity, int acceleration);
+</b><p>    Same as LZ4_compress_default(), but allows selection of "acceleration" factor.
+    The larger the acceleration value, the faster the algorithm, but also the lesser the compression.
+    It's a trade-off. It can be fine tuned, with each successive value providing roughly +~3% to speed.
+    An acceleration value of "1" is the same as regular LZ4_compress_default()
+    Values <= 0 will be replaced by LZ4_ACCELERATION_DEFAULT (currently == 1, see lz4.c).
+    Values > LZ4_ACCELERATION_MAX will be replaced by LZ4_ACCELERATION_MAX (currently == 65537, see lz4.c).
+</p></pre><BR>
+
+<pre><b>int LZ4_sizeofState(void);
+int LZ4_compress_fast_extState (void* state, const char* src, char* dst, int srcSize, int dstCapacity, int acceleration);
+</b><p>  Same as LZ4_compress_fast(), using an externally allocated memory space for its state.
+  Use LZ4_sizeofState() to know how much memory must be allocated,
+  and allocate it on 8-bytes boundaries (using `malloc()` typically).
+  Then, provide this buffer as `void* state` to compression function.
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_compress_destSize (const char* src, char* dst, int* srcSizePtr, int targetDstSize);
+</b><p>  Reverse the logic : compresses as much data as possible from 'src' buffer
+  into already allocated buffer 'dst', of size >= 'targetDestSize'.
+  This function either compresses the entire 'src' content into 'dst' if it's large enough,
+  or fill 'dst' buffer completely with as much data as possible from 'src'.
+  note: acceleration parameter is fixed to "default".
+
+ *srcSizePtr : will be modified to indicate how many bytes where read from 'src' to fill 'dst'.
+               New value is necessarily <= input value.
+ @return : Nb bytes written into 'dst' (necessarily <= targetDestSize)
+           or 0 if compression fails.
+
+ Note : from v1.8.2 to v1.9.1, this function had a bug (fixed un v1.9.2+):
+        the produced compressed content could, in specific circumstances,
+        require to be decompressed into a destination buffer larger
+        by at least 1 byte than the content to decompress.
+        If an application uses `LZ4_compress_destSize()`,
+        it's highly recommended to update liblz4 to v1.9.2 or better.
+        If this can't be done or ensured,
+        the receiving decompression function should provide
+        a dstCapacity which is > decompressedSize, by at least 1 byte.
+        See https://github.com/lz4/lz4/issues/859 for details
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_decompress_safe_partial (const char* src, char* dst, int srcSize, int targetOutputSize, int dstCapacity);
+</b><p>  Decompress an LZ4 compressed block, of size 'srcSize' at position 'src',
+  into destination buffer 'dst' of size 'dstCapacity'.
+  Up to 'targetOutputSize' bytes will be decoded.
+  The function stops decoding on reaching this objective.
+  This can be useful to boost performance
+  whenever only the beginning of a block is required.
+
+ @return : the number of bytes decoded in `dst` (necessarily <= targetOutputSize)
+           If source stream is detected malformed, function returns a negative result.
+
+  Note 1 : @return can be < targetOutputSize, if compressed block contains less data.
+
+  Note 2 : targetOutputSize must be <= dstCapacity
+
+  Note 3 : this function effectively stops decoding on reaching targetOutputSize,
+           so dstCapacity is kind of redundant.
+           This is because in older versions of this function,
+           decoding operation would still write complete sequences.
+           Therefore, there was no guarantee that it would stop writing at exactly targetOutputSize,
+           it could write more bytes, though only up to dstCapacity.
+           Some "margin" used to be required for this operation to work properly.
+           Thankfully, this is no longer necessary.
+           The function nonetheless keeps the same signature, in an effort to preserve API compatibility.
+
+  Note 4 : If srcSize is the exact size of the block,
+           then targetOutputSize can be any value,
+           including larger than the block's decompressed size.
+           The function will, at most, generate block's decompressed size.
+
+  Note 5 : If srcSize is _larger_ than block's compressed size,
+           then targetOutputSize **MUST** be <= block's decompressed size.
+           Otherwise, *silent corruption will occur*.
+ 
+</p></pre><BR>
+
+<a name="Chapter6"></a><h2>Streaming Compression Functions</h2><pre></pre>
+
+<pre><b>void LZ4_resetStream_fast (LZ4_stream_t* streamPtr);
+</b><p>  Use this to prepare an LZ4_stream_t for a new chain of dependent blocks
+  (e.g., LZ4_compress_fast_continue()).
+
+  An LZ4_stream_t must be initialized once before usage.
+  This is automatically done when created by LZ4_createStream().
+  However, should the LZ4_stream_t be simply declared on stack (for example),
+  it's necessary to initialize it first, using LZ4_initStream().
+
+  After init, start any new stream with LZ4_resetStream_fast().
+  A same LZ4_stream_t can be re-used multiple times consecutively
+  and compress multiple streams,
+  provided that it starts each new stream with LZ4_resetStream_fast().
+
+  LZ4_resetStream_fast() is much faster than LZ4_initStream(),
+  but is not compatible with memory regions containing garbage data.
+
+  Note: it's only useful to call LZ4_resetStream_fast()
+        in the context of streaming compression.
+        The *extState* functions perform their own resets.
+        Invoking LZ4_resetStream_fast() before is redundant, and even counterproductive.
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_loadDict (LZ4_stream_t* streamPtr, const char* dictionary, int dictSize);
+</b><p>  Use this function to reference a static dictionary into LZ4_stream_t.
+  The dictionary must remain available during compression.
+  LZ4_loadDict() triggers a reset, so any previous data will be forgotten.
+  The same dictionary will have to be loaded on decompression side for successful decoding.
+  Dictionary are useful for better compression of small data (KB range).
+  While LZ4 accept any input as dictionary,
+  results are generally better when using Zstandard's Dictionary Builder.
+  Loading a size of 0 is allowed, and is the same as reset.
+ @return : loaded dictionary size, in bytes (necessarily <= 64 KB)
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_compress_fast_continue (LZ4_stream_t* streamPtr, const char* src, char* dst, int srcSize, int dstCapacity, int acceleration);
+</b><p>  Compress 'src' content using data from previously compressed blocks, for better compression ratio.
+ 'dst' buffer must be already allocated.
+  If dstCapacity >= LZ4_compressBound(srcSize), compression is guaranteed to succeed, and runs faster.
+
+ @return : size of compressed block
+           or 0 if there is an error (typically, cannot fit into 'dst').
+
+  Note 1 : Each invocation to LZ4_compress_fast_continue() generates a new block.
+           Each block has precise boundaries.
+           Each block must be decompressed separately, calling LZ4_decompress_*() with relevant metadata.
+           It's not possible to append blocks together and expect a single invocation of LZ4_decompress_*() to decompress them together.
+
+  Note 2 : The previous 64KB of source data is __assumed__ to remain present, unmodified, at same address in memory !
+
+  Note 3 : When input is structured as a double-buffer, each buffer can have any size, including < 64 KB.
+           Make sure that buffers are separated, by at least one byte.
+           This construction ensures that each block only depends on previous block.
+
+  Note 4 : If input buffer is a ring-buffer, it can have any size, including < 64 KB.
+
+  Note 5 : After an error, the stream status is undefined (invalid), it can only be reset or freed.
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_saveDict (LZ4_stream_t* streamPtr, char* safeBuffer, int maxDictSize);
+</b><p>  If last 64KB data cannot be guaranteed to remain available at its current memory location,
+  save it into a safer place (char* safeBuffer).
+  This is schematically equivalent to a memcpy() followed by LZ4_loadDict(),
+  but is much faster, because LZ4_saveDict() doesn't need to rebuild tables.
+ @return : saved dictionary size in bytes (necessarily <= maxDictSize), or 0 if error.
+ 
+</p></pre><BR>
+
+<a name="Chapter7"></a><h2>Streaming Decompression Functions</h2><pre>  Bufferless synchronous API
+<BR></pre>
+
+<pre><b>LZ4_streamDecode_t* LZ4_createStreamDecode(void);
+int                 LZ4_freeStreamDecode (LZ4_streamDecode_t* LZ4_stream);
+</b><p>  creation / destruction of streaming decompression tracking context.
+  A tracking context can be re-used multiple times.
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_setStreamDecode (LZ4_streamDecode_t* LZ4_streamDecode, const char* dictionary, int dictSize);
+</b><p>  An LZ4_streamDecode_t context can be allocated once and re-used multiple times.
+  Use this function to start decompression of a new stream of blocks.
+  A dictionary can optionally be set. Use NULL or size 0 for a reset order.
+  Dictionary is presumed stable : it must remain accessible and unmodified during next decompression.
+ @return : 1 if OK, 0 if error
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_decoderRingBufferSize(int maxBlockSize);
+#define LZ4_DECODER_RING_BUFFER_SIZE(maxBlockSize) (65536 + 14 + (maxBlockSize))  </b>/* for static allocation; maxBlockSize presumed valid */<b>
+</b><p>  Note : in a ring buffer scenario (optional),
+  blocks are presumed decompressed next to each other
+  up to the moment there is not enough remaining space for next block (remainingSize < maxBlockSize),
+  at which stage it resumes from beginning of ring buffer.
+  When setting such a ring buffer for streaming decompression,
+  provides the minimum size of this ring buffer
+  to be compatible with any source respecting maxBlockSize condition.
+ @return : minimum ring buffer size,
+           or 0 if there is an error (invalid maxBlockSize).
+ 
+</p></pre><BR>
+
+<pre><b>int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* src, char* dst, int srcSize, int dstCapacity);
+</b><p>  These decoding functions allow decompression of consecutive blocks in "streaming" mode.
+  A block is an unsplittable entity, it must be presented entirely to a decompression function.
+  Decompression functions only accepts one block at a time.
+  The last 64KB of previously decoded data *must* remain available and unmodified at the memory position where they were decoded.
+  If less than 64KB of data has been decoded, all the data must be present.
+
+  Special : if decompression side sets a ring buffer, it must respect one of the following conditions :
+  - Decompression buffer size is _at least_ LZ4_decoderRingBufferSize(maxBlockSize).
+    maxBlockSize is the maximum size of any single block. It can have any value > 16 bytes.
+    In which case, encoding and decoding buffers do not need to be synchronized.
+    Actually, data can be produced by any source compliant with LZ4 format specification, and respecting maxBlockSize.
+  - Synchronized mode :
+    Decompression buffer size is _exactly_ the same as compression buffer size,
+    and follows exactly same update rule (block boundaries at same positions),
+    and decoding function is provided with exact decompressed size of each block (exception for last block of the stream),
+    _then_ decoding & encoding ring buffer can have any size, including small ones ( < 64 KB).
+  - Decompression buffer is larger than encoding buffer, by a minimum of maxBlockSize more bytes.
+    In which case, encoding and decoding buffers do not need to be synchronized,
+    and encoding ring buffer can have any size, including small ones ( < 64 KB).
+
+  Whenever these conditions are not possible,
+  save the last 64KB of decoded data into a safe buffer where it can't be modified during decompression,
+  then indicate where this data is saved using LZ4_setStreamDecode(), before decompressing next block.
+</p></pre><BR>
+
+<pre><b>int LZ4_decompress_safe_usingDict (const char* src, char* dst, int srcSize, int dstCapcity, const char* dictStart, int dictSize);
+</b><p>  These decoding functions work the same as
+  a combination of LZ4_setStreamDecode() followed by LZ4_decompress_*_continue()
+  They are stand-alone, and don't need an LZ4_streamDecode_t structure.
+  Dictionary is presumed stable : it must remain accessible and unmodified during decompression.
+  Performance tip : Decompression speed can be substantially increased
+                    when dst == dictStart + dictSize.
+ 
+</p></pre><BR>
+
+<a name="Chapter8"></a><h2>Experimental section</h2><pre>
+ Symbols declared in this section must be considered unstable. Their
+ signatures or semantics may change, or they may be removed altogether in the
+ future. They are therefore only safe to depend on when the caller is
+ statically linked against the library.
+
+ To protect against unsafe usage, not only are the declarations guarded,
+ the definitions are hidden by default
+ when building LZ4 as a shared/dynamic library.
+
+ In order to access these declarations,
+ define LZ4_STATIC_LINKING_ONLY in your application
+ before including LZ4's headers.
+
+ In order to make their implementations accessible dynamically, you must
+ define LZ4_PUBLISH_STATIC_FUNCTIONS when building the LZ4 library.
+<BR></pre>
+
+<pre><b>LZ4LIB_STATIC_API int LZ4_compress_fast_extState_fastReset (void* state, const char* src, char* dst, int srcSize, int dstCapacity, int acceleration);
+</b><p>  A variant of LZ4_compress_fast_extState().
+
+  Using this variant avoids an expensive initialization step.
+  It is only safe to call if the state buffer is known to be correctly initialized already
+  (see above comment on LZ4_resetStream_fast() for a definition of "correctly initialized").
+  From a high level, the difference is that
+  this function initializes the provided state with a call to something like LZ4_resetStream_fast()
+  while LZ4_compress_fast_extState() starts with a call to LZ4_resetStream().
+ 
+</p></pre><BR>
+
+<pre><b>LZ4LIB_STATIC_API void LZ4_attach_dictionary(LZ4_stream_t* workingStream, const LZ4_stream_t* dictionaryStream);
+</b><p>  This is an experimental API that allows
+  efficient use of a static dictionary many times.
+
+  Rather than re-loading the dictionary buffer into a working context before
+  each compression, or copying a pre-loaded dictionary's LZ4_stream_t into a
+  working LZ4_stream_t, this function introduces a no-copy setup mechanism,
+  in which the working stream references the dictionary stream in-place.
+
+  Several assumptions are made about the state of the dictionary stream.
+  Currently, only streams which have been prepared by LZ4_loadDict() should
+  be expected to work.
+
+  Alternatively, the provided dictionaryStream may be NULL,
+  in which case any existing dictionary stream is unset.
+
+  If a dictionary is provided, it replaces any pre-existing stream history.
+  The dictionary contents are the only history that can be referenced and
+  logically immediately precede the data compressed in the first subsequent
+  compression call.
+
+  The dictionary will only remain attached to the working stream through the
+  first compression call, at the end of which it is cleared. The dictionary
+  stream (and source buffer) must remain in-place / accessible / unchanged
+  through the completion of the first compression call on the stream.
+ 
+</p></pre><BR>
+
+<pre><b></b><p>
+ It's possible to have input and output sharing the same buffer,
+ for highly constrained memory environments.
+ In both cases, it requires input to lay at the end of the buffer,
+ and decompression to start at beginning of the buffer.
+ Buffer size must feature some margin, hence be larger than final size.
+
+ |<------------------------buffer--------------------------------->|
+                             |<-----------compressed data--------->|
+ |<-----------decompressed size------------------>|
+                                                  |<----margin---->|
+
+ This technique is more useful for decompression,
+ since decompressed size is typically larger,
+ and margin is short.
+
+ In-place decompression will work inside any buffer
+ which size is >= LZ4_DECOMPRESS_INPLACE_BUFFER_SIZE(decompressedSize).
+ This presumes that decompressedSize > compressedSize.
+ Otherwise, it means compression actually expanded data,
+ and it would be more efficient to store such data with a flag indicating it's not compressed.
+ This can happen when data is not compressible (already compressed, or encrypted).
+
+ For in-place compression, margin is larger, as it must be able to cope with both
+ history preservation, requiring input data to remain unmodified up to LZ4_DISTANCE_MAX,
+ and data expansion, which can happen when input is not compressible.
+ As a consequence, buffer size requirements are much higher,
+ and memory savings offered by in-place compression are more limited.
+
+ There are ways to limit this cost for compression :
+ - Reduce history size, by modifying LZ4_DISTANCE_MAX.
+   Note that it is a compile-time constant, so all compressions will apply this limit.
+   Lower values will reduce compression ratio, except when input_size < LZ4_DISTANCE_MAX,
+   so it's a reasonable trick when inputs are known to be small.
+ - Require the compressor to deliver a "maximum compressed size".
+   This is the `dstCapacity` parameter in `LZ4_compress*()`.
+   When this size is < LZ4_COMPRESSBOUND(inputSize), then compression can fail,
+   in which case, the return code will be 0 (zero).
+   The caller must be ready for these cases to happen,
+   and typically design a backup scheme to send data uncompressed.
+ The combination of both techniques can significantly reduce
+ the amount of margin required for in-place compression.
+
+ In-place compression can work in any buffer
+ which size is >= (maxCompressedSize)
+ with maxCompressedSize == LZ4_COMPRESSBOUND(srcSize) for guaranteed compression success.
+ LZ4_COMPRESS_INPLACE_BUFFER_SIZE() depends on both maxCompressedSize and LZ4_DISTANCE_MAX,
+ so it's possible to reduce memory requirements by playing with them.
+ 
+</p></pre><BR>
+
+<pre><b>#define LZ4_DECOMPRESS_INPLACE_BUFFER_SIZE(decompressedSize)   ((decompressedSize) + LZ4_DECOMPRESS_INPLACE_MARGIN(decompressedSize))  </b>/**< note: presumes that compressedSize < decompressedSize. note2: margin is overestimated a bit, since it could use compressedSize instead */<b>
+</b></pre><BR>
+<pre><b>#define LZ4_COMPRESS_INPLACE_BUFFER_SIZE(maxCompressedSize)   ((maxCompressedSize) + LZ4_COMPRESS_INPLACE_MARGIN)  </b>/**< maxCompressedSize is generally LZ4_COMPRESSBOUND(inputSize), but can be set to any lower value, with the risk that compression can fail (return code 0(zero)) */<b>
+</b></pre><BR>
+<a name="Chapter9"></a><h2>Private Definitions</h2><pre>
+ Do not use these definitions directly.
+ They are only exposed to allow static allocation of `LZ4_stream_t` and `LZ4_streamDecode_t`.
+ Accessing members will expose user code to API and/or ABI break in future versions of the library.
+<BR></pre>
+
+<pre><b>typedef struct {
+    const LZ4_byte* externalDict;
+    size_t extDictSize;
+    const LZ4_byte* prefixEnd;
+    size_t prefixSize;
+} LZ4_streamDecode_t_internal;
+</b></pre><BR>
+<pre><b>#define LZ4_STREAMSIZE       ((1UL << LZ4_MEMORY_USAGE) + 32)  </b>/* static size, for inter-version compatibility */<b>
+#define LZ4_STREAMSIZE_VOIDP (LZ4_STREAMSIZE / sizeof(void*))
+union LZ4_stream_u {
+    void* table[LZ4_STREAMSIZE_VOIDP];
+    LZ4_stream_t_internal internal_donotuse;
+}; </b>/* previously typedef'd to LZ4_stream_t */<b>
+</b><p>  Do not use below internal definitions directly !
+  Declare or allocate an LZ4_stream_t instead.
+  LZ4_stream_t can also be created using LZ4_createStream(), which is recommended.
+  The structure definition can be convenient for static allocation
+  (on stack, or as part of larger structure).
+  Init this structure with LZ4_initStream() before first use.
+  note : only use this definition in association with static linking !
+  this definition is not API/ABI safe, and may change in future versions.
+ 
+</p></pre><BR>
+
+<pre><b>LZ4_stream_t* LZ4_initStream (void* buffer, size_t size);
+</b><p>  An LZ4_stream_t structure must be initialized at least once.
+  This is automatically done when invoking LZ4_createStream(),
+  but it's not when the structure is simply declared on stack (for example).
+
+  Use LZ4_initStream() to properly initialize a newly declared LZ4_stream_t.
+  It can also initialize any arbitrary buffer of sufficient size,
+  and will @return a pointer of proper type upon initialization.
+
+  Note : initialization fails if size and alignment conditions are not respected.
+         In which case, the function will @return NULL.
+  Note2: An LZ4_stream_t structure guarantees correct alignment and size.
+  Note3: Before v1.9.0, use LZ4_resetStream() instead
+ 
+</p></pre><BR>
+
+<pre><b>#define LZ4_STREAMDECODESIZE_U64 (4 + ((sizeof(void*)==16) ? 2 : 0) </b>/*AS-400*/ )<b>
+#define LZ4_STREAMDECODESIZE     (LZ4_STREAMDECODESIZE_U64 * sizeof(unsigned long long))
+union LZ4_streamDecode_u {
+    unsigned long long table[LZ4_STREAMDECODESIZE_U64];
+    LZ4_streamDecode_t_internal internal_donotuse;
+} ;   </b>/* previously typedef'd to LZ4_streamDecode_t */<b>
+</b><p>  information structure to track an LZ4 stream during decompression.
+  init this structure  using LZ4_setStreamDecode() before first use.
+  note : only use in association with static linking !
+         this definition is not API/ABI safe,
+         and may change in a future version !
+ 
+</p></pre><BR>
+
+<a name="Chapter10"></a><h2>Obsolete Functions</h2><pre></pre>
+
+<pre><b>#ifdef LZ4_DISABLE_DEPRECATE_WARNINGS
+#  define LZ4_DEPRECATED(message)   </b>/* disable deprecation warnings */<b>
+#else
+#  if defined (__cplusplus) && (__cplusplus >= 201402) </b>/* C++14 or greater */<b>
+#    define LZ4_DEPRECATED(message) [[deprecated(message)]]
+#  elif defined(_MSC_VER)
+#    define LZ4_DEPRECATED(message) __declspec(deprecated(message))
+#  elif defined(__clang__) || (defined(__GNUC__) && (__GNUC__ * 10 + __GNUC_MINOR__ >= 45))
+#    define LZ4_DEPRECATED(message) __attribute__((deprecated(message)))
+#  elif defined(__GNUC__) && (__GNUC__ * 10 + __GNUC_MINOR__ >= 31)
+#    define LZ4_DEPRECATED(message) __attribute__((deprecated))
+#  else
+#    pragma message("WARNING: LZ4_DEPRECATED needs custom implementation for this compiler")
+#    define LZ4_DEPRECATED(message)   </b>/* disabled */<b>
+#  endif
+#endif </b>/* LZ4_DISABLE_DEPRECATE_WARNINGS */<b>
+</b><p>
+  Deprecated functions make the compiler generate a warning when invoked.
+  This is meant to invite users to update their source code.
+  Should deprecation warnings be a problem, it is generally possible to disable them,
+  typically with -Wno-deprecated-declarations for gcc
+  or _CRT_SECURE_NO_WARNINGS in Visual.
+
+  Another method is to define LZ4_DISABLE_DEPRECATE_WARNINGS
+  before including the header file.
+ 
+</p></pre><BR>
+
+<pre><b>LZ4_DEPRECATED("use LZ4_compress_default() instead")       LZ4LIB_API int LZ4_compress               (const char* src, char* dest, int srcSize);
+LZ4_DEPRECATED("use LZ4_compress_default() instead")       LZ4LIB_API int LZ4_compress_limitedOutput (const char* src, char* dest, int srcSize, int maxOutputSize);
+LZ4_DEPRECATED("use LZ4_compress_fast_extState() instead") LZ4LIB_API int LZ4_compress_withState               (void* state, const char* source, char* dest, int inputSize);
+LZ4_DEPRECATED("use LZ4_compress_fast_extState() instead") LZ4LIB_API int LZ4_compress_limitedOutput_withState (void* state, const char* source, char* dest, int inputSize, int maxOutputSize);
+LZ4_DEPRECATED("use LZ4_compress_fast_continue() instead") LZ4LIB_API int LZ4_compress_continue                (LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest, int inputSize);
+LZ4_DEPRECATED("use LZ4_compress_fast_continue() instead") LZ4LIB_API int LZ4_compress_limitedOutput_continue  (LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest, int inputSize, int maxOutputSize);
+</b><p></p></pre><BR>
+
+<pre><b>LZ4_DEPRECATED("use LZ4_decompress_fast() instead") LZ4LIB_API int LZ4_uncompress (const char* source, char* dest, int outputSize);
+LZ4_DEPRECATED("use LZ4_decompress_safe() instead") LZ4LIB_API int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize);
+</b><p></p></pre><BR>
+
+<pre><b>LZ4_DEPRECATED("use LZ4_decompress_safe_usingDict() instead") LZ4LIB_API int LZ4_decompress_safe_withPrefix64k (const char* src, char* dst, int compressedSize, int maxDstSize);
+LZ4_DEPRECATED("use LZ4_decompress_fast_usingDict() instead") LZ4LIB_API int LZ4_decompress_fast_withPrefix64k (const char* src, char* dst, int originalSize);
+</b><p></p></pre><BR>
+
+<pre><b>LZ4_DEPRECATED("This function is deprecated and unsafe. Consider using LZ4_decompress_safe() instead")
+int LZ4_decompress_fast (const char* src, char* dst, int originalSize);
+LZ4_DEPRECATED("This function is deprecated and unsafe. Consider using LZ4_decompress_safe_continue() instead")
+int LZ4_decompress_fast_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* src, char* dst, int originalSize);
+LZ4_DEPRECATED("This function is deprecated and unsafe. Consider using LZ4_decompress_safe_usingDict() instead")
+int LZ4_decompress_fast_usingDict (const char* src, char* dst, int originalSize, const char* dictStart, int dictSize);
+</b><p>  These functions used to be faster than LZ4_decompress_safe(),
+  but this is no longer the case. They are now slower.
+  This is because LZ4_decompress_fast() doesn't know the input size,
+  and therefore must progress more cautiously into the input buffer to not read beyond the end of block.
+  On top of that `LZ4_decompress_fast()` is not protected vs malformed or malicious inputs, making it a security liability.
+  As a consequence, LZ4_decompress_fast() is strongly discouraged, and deprecated.
+
+  The last remaining LZ4_decompress_fast() specificity is that
+  it can decompress a block without knowing its compressed size.
+  Such functionality can be achieved in a more secure manner
+  by employing LZ4_decompress_safe_partial().
+
+  Parameters:
+  originalSize : is the uncompressed size to regenerate.
+                 `dst` must be already allocated, its size must be >= 'originalSize' bytes.
+ @return : number of bytes read from source buffer (== compressed size).
+           The function expects to finish at block's end exactly.
+           If the source stream is detected malformed, the function stops decoding and returns a negative result.
+  note : LZ4_decompress_fast*() requires originalSize. Thanks to this information, it never writes past the output buffer.
+         However, since it doesn't know its 'src' size, it may read an unknown amount of input, past input buffer bounds.
+         Also, since match offsets are not validated, match reads from 'src' may underflow too.
+         These issues never happen if input (compressed) data is correct.
+         But they may happen if input data is invalid (error or intentional tampering).
+         As a consequence, use these functions in trusted environments with trusted data **only**.
+ 
+</p></pre><BR>
+
+<pre><b>void LZ4_resetStream (LZ4_stream_t* streamPtr);
+</b><p>  An LZ4_stream_t structure must be initialized at least once.
+  This is done with LZ4_initStream(), or LZ4_resetStream().
+  Consider switching to LZ4_initStream(),
+  invoking LZ4_resetStream() will trigger deprecation warnings in the future.
+ 
+</p></pre><BR>
+
+</html>
+</body>

lz4.mod/lz4/doc/lz4frame_manual.html

@@ -0,0 +1,397 @@
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>1.9.3 Manual</title>
+</head>
+<body>
+<h1>1.9.3 Manual</h1>
+<hr>
+<a name="Contents"></a><h2>Contents</h2>
+<ol>
+<li><a href="#Chapter1">Introduction</a></li>
+<li><a href="#Chapter2">Compiler specifics</a></li>
+<li><a href="#Chapter3">Error management</a></li>
+<li><a href="#Chapter4">Frame compression types</a></li>
+<li><a href="#Chapter5">Simple compression function</a></li>
+<li><a href="#Chapter6">Advanced compression functions</a></li>
+<li><a href="#Chapter7">Resource Management</a></li>
+<li><a href="#Chapter8">Compression</a></li>
+<li><a href="#Chapter9">Decompression functions</a></li>
+<li><a href="#Chapter10">Streaming decompression functions</a></li>
+<li><a href="#Chapter11">Bulk processing dictionary API</a></li>
+</ol>
+<hr>
+<a name="Chapter1"></a><h2>Introduction</h2><pre>
+  lz4frame.h implements LZ4 frame specification (doc/lz4_Frame_format.md).
+  lz4frame.h provides frame compression functions that take care
+  of encoding standard metadata alongside LZ4-compressed blocks.
+<BR></pre>
+
+<a name="Chapter2"></a><h2>Compiler specifics</h2><pre></pre>
+
+<a name="Chapter3"></a><h2>Error management</h2><pre></pre>
+
+<pre><b>unsigned    LZ4F_isError(LZ4F_errorCode_t code);   </b>/**< tells when a function result is an error code */<b>
+</b></pre><BR>
+<pre><b>const char* LZ4F_getErrorName(LZ4F_errorCode_t code);   </b>/**< return error code string; for debugging */<b>
+</b></pre><BR>
+<a name="Chapter4"></a><h2>Frame compression types</h2><pre> 
+<BR></pre>
+
+<pre><b>typedef enum {
+    LZ4F_default=0,
+    LZ4F_max64KB=4,
+    LZ4F_max256KB=5,
+    LZ4F_max1MB=6,
+    LZ4F_max4MB=7
+    LZ4F_OBSOLETE_ENUM(max64KB)
+    LZ4F_OBSOLETE_ENUM(max256KB)
+    LZ4F_OBSOLETE_ENUM(max1MB)
+    LZ4F_OBSOLETE_ENUM(max4MB)
+} LZ4F_blockSizeID_t;
+</b></pre><BR>
+<pre><b>typedef enum {
+    LZ4F_blockLinked=0,
+    LZ4F_blockIndependent
+    LZ4F_OBSOLETE_ENUM(blockLinked)
+    LZ4F_OBSOLETE_ENUM(blockIndependent)
+} LZ4F_blockMode_t;
+</b></pre><BR>
+<pre><b>typedef enum {
+    LZ4F_noContentChecksum=0,
+    LZ4F_contentChecksumEnabled
+    LZ4F_OBSOLETE_ENUM(noContentChecksum)
+    LZ4F_OBSOLETE_ENUM(contentChecksumEnabled)
+} LZ4F_contentChecksum_t;
+</b></pre><BR>
+<pre><b>typedef enum {
+    LZ4F_noBlockChecksum=0,
+    LZ4F_blockChecksumEnabled
+} LZ4F_blockChecksum_t;
+</b></pre><BR>
+<pre><b>typedef enum {
+    LZ4F_frame=0,
+    LZ4F_skippableFrame
+    LZ4F_OBSOLETE_ENUM(skippableFrame)
+} LZ4F_frameType_t;
+</b></pre><BR>
+<pre><b>typedef struct {
+  LZ4F_blockSizeID_t     blockSizeID;         </b>/* max64KB, max256KB, max1MB, max4MB; 0 == default */<b>
+  LZ4F_blockMode_t       blockMode;           </b>/* LZ4F_blockLinked, LZ4F_blockIndependent; 0 == default */<b>
+  LZ4F_contentChecksum_t contentChecksumFlag; </b>/* 1: frame terminated with 32-bit checksum of decompressed data; 0: disabled (default) */<b>
+  LZ4F_frameType_t       frameType;           </b>/* read-only field : LZ4F_frame or LZ4F_skippableFrame */<b>
+  unsigned long long     contentSize;         </b>/* Size of uncompressed content ; 0 == unknown */<b>
+  unsigned               dictID;              </b>/* Dictionary ID, sent by compressor to help decoder select correct dictionary; 0 == no dictID provided */<b>
+  LZ4F_blockChecksum_t   blockChecksumFlag;   </b>/* 1: each block followed by a checksum of block's compressed data; 0: disabled (default) */<b>
+} LZ4F_frameInfo_t;
+</b><p>  makes it possible to set or read frame parameters.
+  Structure must be first init to 0, using memset() or LZ4F_INIT_FRAMEINFO,
+  setting all parameters to default.
+  It's then possible to update selectively some parameters 
+</p></pre><BR>
+
+<pre><b>typedef struct {
+  LZ4F_frameInfo_t frameInfo;
+  int      compressionLevel;    </b>/* 0: default (fast mode); values > LZ4HC_CLEVEL_MAX count as LZ4HC_CLEVEL_MAX; values < 0 trigger "fast acceleration" */<b>
+  unsigned autoFlush;           </b>/* 1: always flush; reduces usage of internal buffers */<b>
+  unsigned favorDecSpeed;       </b>/* 1: parser favors decompression speed vs compression ratio. Only works for high compression modes (>= LZ4HC_CLEVEL_OPT_MIN) */  /* v1.8.2+ */<b>
+  unsigned reserved[3];         </b>/* must be zero for forward compatibility */<b>
+} LZ4F_preferences_t;
+</b><p>  makes it possible to supply advanced compression instructions to streaming interface.
+  Structure must be first init to 0, using memset() or LZ4F_INIT_PREFERENCES,
+  setting all parameters to default.
+  All reserved fields must be set to zero. 
+</p></pre><BR>
+
+<a name="Chapter5"></a><h2>Simple compression function</h2><pre></pre>
+
+<pre><b>size_t LZ4F_compressFrameBound(size_t srcSize, const LZ4F_preferences_t* preferencesPtr);
+</b><p>  Returns the maximum possible compressed size with LZ4F_compressFrame() given srcSize and preferences.
+ `preferencesPtr` is optional. It can be replaced by NULL, in which case, the function will assume default preferences.
+  Note : this result is only usable with LZ4F_compressFrame().
+         It may also be used with LZ4F_compressUpdate() _if no flush() operation_ is performed.
+ 
+</p></pre><BR>
+
+<pre><b>size_t LZ4F_compressFrame(void* dstBuffer, size_t dstCapacity,
+                                const void* srcBuffer, size_t srcSize,
+                                const LZ4F_preferences_t* preferencesPtr);
+</b><p>  Compress an entire srcBuffer into a valid LZ4 frame.
+  dstCapacity MUST be >= LZ4F_compressFrameBound(srcSize, preferencesPtr).
+  The LZ4F_preferences_t structure is optional : you can provide NULL as argument. All preferences will be set to default.
+ @return : number of bytes written into dstBuffer.
+           or an error code if it fails (can be tested using LZ4F_isError())
+ 
+</p></pre><BR>
+
+<a name="Chapter6"></a><h2>Advanced compression functions</h2><pre></pre>
+
+<pre><b>typedef struct {
+  unsigned stableSrc;    </b>/* 1 == src content will remain present on future calls to LZ4F_compress(); skip copying src content within tmp buffer */<b>
+  unsigned reserved[3];
+} LZ4F_compressOptions_t;
+</b></pre><BR>
+<a name="Chapter7"></a><h2>Resource Management</h2><pre></pre>
+
+<pre><b>LZ4F_errorCode_t LZ4F_createCompressionContext(LZ4F_cctx** cctxPtr, unsigned version);
+LZ4F_errorCode_t LZ4F_freeCompressionContext(LZ4F_cctx* cctx);
+</b><p> The first thing to do is to create a compressionContext object, which will be used in all compression operations.
+ This is achieved using LZ4F_createCompressionContext(), which takes as argument a version.
+ The version provided MUST be LZ4F_VERSION. It is intended to track potential version mismatch, notably when using DLL.
+ The function will provide a pointer to a fully allocated LZ4F_cctx object.
+ If @return != zero, there was an error during context creation.
+ Object can be released using LZ4F_freeCompressionContext();
+ Note: LZ4F_freeCompressionContext() works with NULL pointers (do nothing).
+ 
+</p></pre><BR>
+
+<a name="Chapter8"></a><h2>Compression</h2><pre></pre>
+
+<pre><b>size_t LZ4F_compressBegin(LZ4F_cctx* cctx,
+                                      void* dstBuffer, size_t dstCapacity,
+                                      const LZ4F_preferences_t* prefsPtr);
+</b><p>  will write the frame header into dstBuffer.
+  dstCapacity must be >= LZ4F_HEADER_SIZE_MAX bytes.
+ `prefsPtr` is optional : you can provide NULL as argument, all preferences will then be set to default.
+ @return : number of bytes written into dstBuffer for the header
+           or an error code (which can be tested using LZ4F_isError())
+ 
+</p></pre><BR>
+
+<pre><b>size_t LZ4F_compressBound(size_t srcSize, const LZ4F_preferences_t* prefsPtr);
+</b><p>  Provides minimum dstCapacity required to guarantee success of
+  LZ4F_compressUpdate(), given a srcSize and preferences, for a worst case scenario.
+  When srcSize==0, LZ4F_compressBound() provides an upper bound for LZ4F_flush() and LZ4F_compressEnd() instead.
+  Note that the result is only valid for a single invocation of LZ4F_compressUpdate().
+  When invoking LZ4F_compressUpdate() multiple times,
+  if the output buffer is gradually filled up instead of emptied and re-used from its start,
+  one must check if there is enough remaining capacity before each invocation, using LZ4F_compressBound().
+ @return is always the same for a srcSize and prefsPtr.
+  prefsPtr is optional : when NULL is provided, preferences will be set to cover worst case scenario.
+  tech details :
+ @return if automatic flushing is not enabled, includes the possibility that internal buffer might already be filled by up to (blockSize-1) bytes.
+  It also includes frame footer (ending + checksum), since it might be generated by LZ4F_compressEnd().
+ @return doesn't include frame header, as it was already generated by LZ4F_compressBegin().
+ 
+</p></pre><BR>
+
+<pre><b>size_t LZ4F_compressUpdate(LZ4F_cctx* cctx,
+                                       void* dstBuffer, size_t dstCapacity,
+                                 const void* srcBuffer, size_t srcSize,
+                                 const LZ4F_compressOptions_t* cOptPtr);
+</b><p>  LZ4F_compressUpdate() can be called repetitively to compress as much data as necessary.
+  Important rule: dstCapacity MUST be large enough to ensure operation success even in worst case situations.
+  This value is provided by LZ4F_compressBound().
+  If this condition is not respected, LZ4F_compress() will fail (result is an errorCode).
+  After an error, the state is left in a UB state, and must be re-initialized or freed.
+ `cOptPtr` is optional : NULL can be provided, in which case all options are set to default.
+ @return : number of bytes written into `dstBuffer` (it can be zero, meaning input data was just buffered).
+           or an error code if it fails (which can be tested using LZ4F_isError())
+ 
+</p></pre><BR>
+
+<pre><b>size_t LZ4F_flush(LZ4F_cctx* cctx,
+                              void* dstBuffer, size_t dstCapacity,
+                        const LZ4F_compressOptions_t* cOptPtr);
+</b><p>  When data must be generated and sent immediately, without waiting for a block to be completely filled,
+  it's possible to call LZ4_flush(). It will immediately compress any data buffered within cctx.
+ `dstCapacity` must be large enough to ensure the operation will be successful.
+ `cOptPtr` is optional : it's possible to provide NULL, all options will be set to default.
+ @return : nb of bytes written into dstBuffer (can be zero, when there is no data stored within cctx)
+           or an error code if it fails (which can be tested using LZ4F_isError())
+  Note : LZ4F_flush() is guaranteed to be successful when dstCapacity >= LZ4F_compressBound(0, prefsPtr).
+ 
+</p></pre><BR>
+
+<pre><b>size_t LZ4F_compressEnd(LZ4F_cctx* cctx,
+                                    void* dstBuffer, size_t dstCapacity,
+                              const LZ4F_compressOptions_t* cOptPtr);
+</b><p>  To properly finish an LZ4 frame, invoke LZ4F_compressEnd().
+  It will flush whatever data remained within `cctx` (like LZ4_flush())
+  and properly finalize the frame, with an endMark and a checksum.
+ `cOptPtr` is optional : NULL can be provided, in which case all options will be set to default.
+ @return : nb of bytes written into dstBuffer, necessarily >= 4 (endMark),
+           or an error code if it fails (which can be tested using LZ4F_isError())
+  Note : LZ4F_compressEnd() is guaranteed to be successful when dstCapacity >= LZ4F_compressBound(0, prefsPtr).
+  A successful call to LZ4F_compressEnd() makes `cctx` available again for another compression task.
+ 
+</p></pre><BR>
+
+<a name="Chapter9"></a><h2>Decompression functions</h2><pre></pre>
+
+<pre><b>typedef struct {
+  unsigned stableDst;    </b>/* pledges that last 64KB decompressed data will remain available unmodified. This optimization skips storage operations in tmp buffers. */<b>
+  unsigned reserved[3];  </b>/* must be set to zero for forward compatibility */<b>
+} LZ4F_decompressOptions_t;
+</b></pre><BR>
+<pre><b>LZ4F_errorCode_t LZ4F_createDecompressionContext(LZ4F_dctx** dctxPtr, unsigned version);
+LZ4F_errorCode_t LZ4F_freeDecompressionContext(LZ4F_dctx* dctx);
+</b><p>  Create an LZ4F_dctx object, to track all decompression operations.
+  The version provided MUST be LZ4F_VERSION.
+  The function provides a pointer to an allocated and initialized LZ4F_dctx object.
+  The result is an errorCode, which can be tested using LZ4F_isError().
+  dctx memory can be released using LZ4F_freeDecompressionContext();
+  Result of LZ4F_freeDecompressionContext() indicates current state of decompressionContext when being released.
+  That is, it should be == 0 if decompression has been completed fully and correctly.
+ 
+</p></pre><BR>
+
+<a name="Chapter10"></a><h2>Streaming decompression functions</h2><pre></pre>
+
+<pre><b>size_t LZ4F_headerSize(const void* src, size_t srcSize);
+</b><p>  Provide the header size of a frame starting at `src`.
+ `srcSize` must be >= LZ4F_MIN_SIZE_TO_KNOW_HEADER_LENGTH,
+  which is enough to decode the header length.
+ @return : size of frame header
+           or an error code, which can be tested using LZ4F_isError()
+  note : Frame header size is variable, but is guaranteed to be
+         >= LZ4F_HEADER_SIZE_MIN bytes, and <= LZ4F_HEADER_SIZE_MAX bytes.
+ 
+</p></pre><BR>
+
+<pre><b>size_t LZ4F_getFrameInfo(LZ4F_dctx* dctx,
+                                     LZ4F_frameInfo_t* frameInfoPtr,
+                                     const void* srcBuffer, size_t* srcSizePtr);
+</b><p>  This function extracts frame parameters (max blockSize, dictID, etc.).
+  Its usage is optional: user can call LZ4F_decompress() directly.
+
+  Extracted information will fill an existing LZ4F_frameInfo_t structure.
+  This can be useful for allocation and dictionary identification purposes.
+
+  LZ4F_getFrameInfo() can work in the following situations :
+
+  1) At the beginning of a new frame, before any invocation of LZ4F_decompress().
+     It will decode header from `srcBuffer`,
+     consuming the header and starting the decoding process.
+
+     Input size must be large enough to contain the full frame header.
+     Frame header size can be known beforehand by LZ4F_headerSize().
+     Frame header size is variable, but is guaranteed to be >= LZ4F_HEADER_SIZE_MIN bytes,
+     and not more than <= LZ4F_HEADER_SIZE_MAX bytes.
+     Hence, blindly providing LZ4F_HEADER_SIZE_MAX bytes or more will always work.
+     It's allowed to provide more input data than the header size,
+     LZ4F_getFrameInfo() will only consume the header.
+
+     If input size is not large enough,
+     aka if it's smaller than header size,
+     function will fail and return an error code.
+
+  2) After decoding has been started,
+     it's possible to invoke LZ4F_getFrameInfo() anytime
+     to extract already decoded frame parameters stored within dctx.
+
+     Note that, if decoding has barely started,
+     and not yet read enough information to decode the header,
+     LZ4F_getFrameInfo() will fail.
+
+  The number of bytes consumed from srcBuffer will be updated in *srcSizePtr (necessarily <= original value).
+  LZ4F_getFrameInfo() only consumes bytes when decoding has not yet started,
+  and when decoding the header has been successful.
+  Decompression must then resume from (srcBuffer + *srcSizePtr).
+
+ @return : a hint about how many srcSize bytes LZ4F_decompress() expects for next call,
+           or an error code which can be tested using LZ4F_isError().
+  note 1 : in case of error, dctx is not modified. Decoding operation can resume from beginning safely.
+  note 2 : frame parameters are *copied into* an already allocated LZ4F_frameInfo_t structure.
+ 
+</p></pre><BR>
+
+<pre><b>size_t LZ4F_decompress(LZ4F_dctx* dctx,
+                                   void* dstBuffer, size_t* dstSizePtr,
+                                   const void* srcBuffer, size_t* srcSizePtr,
+                                   const LZ4F_decompressOptions_t* dOptPtr);
+</b><p>  Call this function repetitively to regenerate data compressed in `srcBuffer`.
+
+  The function requires a valid dctx state.
+  It will read up to *srcSizePtr bytes from srcBuffer,
+  and decompress data into dstBuffer, of capacity *dstSizePtr.
+
+  The nb of bytes consumed from srcBuffer will be written into *srcSizePtr (necessarily <= original value).
+  The nb of bytes decompressed into dstBuffer will be written into *dstSizePtr (necessarily <= original value).
+
+  The function does not necessarily read all input bytes, so always check value in *srcSizePtr.
+  Unconsumed source data must be presented again in subsequent invocations.
+
+ `dstBuffer` can freely change between each consecutive function invocation.
+ `dstBuffer` content will be overwritten.
+
+ @return : an hint of how many `srcSize` bytes LZ4F_decompress() expects for next call.
+  Schematically, it's the size of the current (or remaining) compressed block + header of next block.
+  Respecting the hint provides some small speed benefit, because it skips intermediate buffers.
+  This is just a hint though, it's always possible to provide any srcSize.
+
+  When a frame is fully decoded, @return will be 0 (no more data expected).
+  When provided with more bytes than necessary to decode a frame,
+  LZ4F_decompress() will stop reading exactly at end of current frame, and @return 0.
+
+  If decompression failed, @return is an error code, which can be tested using LZ4F_isError().
+  After a decompression error, the `dctx` context is not resumable.
+  Use LZ4F_resetDecompressionContext() to return to clean state.
+
+  After a frame is fully decoded, dctx can be used again to decompress another frame.
+ 
+</p></pre><BR>
+
+<pre><b>void LZ4F_resetDecompressionContext(LZ4F_dctx* dctx);   </b>/* always successful */<b>
+</b><p>  In case of an error, the context is left in "undefined" state.
+  In which case, it's necessary to reset it, before re-using it.
+  This method can also be used to abruptly stop any unfinished decompression,
+  and start a new one using same context resources. 
+</p></pre><BR>
+
+<pre><b>typedef enum { LZ4F_LIST_ERRORS(LZ4F_GENERATE_ENUM)
+              _LZ4F_dummy_error_enum_for_c89_never_used } LZ4F_errorCodes;
+</b></pre><BR>
+<a name="Chapter11"></a><h2>Bulk processing dictionary API</h2><pre></pre>
+
+<pre><b>LZ4FLIB_STATIC_API LZ4F_CDict* LZ4F_createCDict(const void* dictBuffer, size_t dictSize);
+LZ4FLIB_STATIC_API void        LZ4F_freeCDict(LZ4F_CDict* CDict);
+</b><p>  When compressing multiple messages / blocks using the same dictionary, it's recommended to load it just once.
+  LZ4_createCDict() will create a digested dictionary, ready to start future compression operations without startup delay.
+  LZ4_CDict can be created once and shared by multiple threads concurrently, since its usage is read-only.
+ `dictBuffer` can be released after LZ4_CDict creation, since its content is copied within CDict 
+</p></pre><BR>
+
+<pre><b>LZ4FLIB_STATIC_API size_t LZ4F_compressFrame_usingCDict(
+    LZ4F_cctx* cctx,
+    void* dst, size_t dstCapacity,
+    const void* src, size_t srcSize,
+    const LZ4F_CDict* cdict,
+    const LZ4F_preferences_t* preferencesPtr);
+</b><p>  Compress an entire srcBuffer into a valid LZ4 frame using a digested Dictionary.
+  cctx must point to a context created by LZ4F_createCompressionContext().
+  If cdict==NULL, compress without a dictionary.
+  dstBuffer MUST be >= LZ4F_compressFrameBound(srcSize, preferencesPtr).
+  If this condition is not respected, function will fail (@return an errorCode).
+  The LZ4F_preferences_t structure is optional : you may provide NULL as argument,
+  but it's not recommended, as it's the only way to provide dictID in the frame header.
+ @return : number of bytes written into dstBuffer.
+           or an error code if it fails (can be tested using LZ4F_isError()) 
+</p></pre><BR>
+
+<pre><b>LZ4FLIB_STATIC_API size_t LZ4F_compressBegin_usingCDict(
+    LZ4F_cctx* cctx,
+    void* dstBuffer, size_t dstCapacity,
+    const LZ4F_CDict* cdict,
+    const LZ4F_preferences_t* prefsPtr);
+</b><p>  Inits streaming dictionary compression, and writes the frame header into dstBuffer.
+  dstCapacity must be >= LZ4F_HEADER_SIZE_MAX bytes.
+ `prefsPtr` is optional : you may provide NULL as argument,
+  however, it's the only way to provide dictID in the frame header.
+ @return : number of bytes written into dstBuffer for the header,
+           or an error code (which can be tested using LZ4F_isError()) 
+</p></pre><BR>
+
+<pre><b>LZ4FLIB_STATIC_API size_t LZ4F_decompress_usingDict(
+    LZ4F_dctx* dctxPtr,
+    void* dstBuffer, size_t* dstSizePtr,
+    const void* srcBuffer, size_t* srcSizePtr,
+    const void* dict, size_t dictSize,
+    const LZ4F_decompressOptions_t* decompressOptionsPtr);
+</b><p>  Same as LZ4F_decompress(), using a predefined dictionary.
+  Dictionary is used "in place", without any preprocessing.
+  It must remain accessible throughout the entire frame decoding. 
+</p></pre><BR>
+
+</html>
+</body>

lz4.mod/lz4/examples/.gitignore

@@ -0,0 +1,10 @@
+/Makefile.lz4*
+/printVersion
+/doubleBuffer
+/dictionaryRandomAccess
+/ringBuffer
+/ringBufferHC
+/lineCompress
+/frameCompress
+/simpleBuffer
+/*.exe

lz4.mod/lz4/examples/COPYING

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
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lz4.mod/lz4/examples/HCStreaming_ringBuffer.c

@@ -0,0 +1,232 @@
+// LZ4 HC streaming API example : ring buffer
+// Based on a previous example by Takayuki Matsuoka
+
+
+/**************************************
+ * Compiler Options
+ **************************************/
+#if defined(_MSC_VER) && (_MSC_VER <= 1800)  /* Visual Studio <= 2013 */
+#  define _CRT_SECURE_NO_WARNINGS
+#  define snprintf sprintf_s
+#endif
+
+#define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__)
+#ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wmissing-braces"   /* GCC bug 53119 : doesn't accept { 0 } as initializer (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119) */
+#endif
+
+
+/**************************************
+ * Includes
+ **************************************/
+#include "lz4hc.h"
+#include "lz4.h"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+enum {
+    MESSAGE_MAX_BYTES   = 1024,
+    RING_BUFFER_BYTES   = 1024 * 8 + MESSAGE_MAX_BYTES,
+    DEC_BUFFER_BYTES    = RING_BUFFER_BYTES + MESSAGE_MAX_BYTES   // Intentionally larger to test unsynchronized ring buffers
+};
+
+
+size_t write_int32(FILE* fp, int32_t i) {
+    return fwrite(&i, sizeof(i), 1, fp);
+}
+
+size_t write_bin(FILE* fp, const void* array, int arrayBytes) {
+    assert(arrayBytes >= 0);
+    return fwrite(array, 1, (size_t)arrayBytes, fp);
+}
+
+size_t read_int32(FILE* fp, int32_t* i) {
+    return fread(i, sizeof(*i), 1, fp);
+}
+
+size_t read_bin(FILE* fp, void* array, int arrayBytes) {
+    assert(arrayBytes >= 0);
+    return fread(array, 1, (size_t)arrayBytes, fp);
+}
+
+
+void test_compress(FILE* outFp, FILE* inpFp)
+{
+    LZ4_streamHC_t lz4Stream_body = { 0 };
+    LZ4_streamHC_t* lz4Stream = &lz4Stream_body;
+
+    static char inpBuf[RING_BUFFER_BYTES];
+    int inpOffset = 0;
+
+    for(;;) {
+        // Read random length ([1,MESSAGE_MAX_BYTES]) data to the ring buffer.
+        char* const inpPtr = &inpBuf[inpOffset];
+        const int randomLength = (rand() % MESSAGE_MAX_BYTES) + 1;
+        const int inpBytes = (int) read_bin(inpFp, inpPtr, randomLength);
+        if (0 == inpBytes) break;
+
+#define CMPBUFSIZE (LZ4_COMPRESSBOUND(MESSAGE_MAX_BYTES))
+        {   char cmpBuf[CMPBUFSIZE];
+            const int cmpBytes = LZ4_compress_HC_continue(lz4Stream, inpPtr, cmpBuf, inpBytes, CMPBUFSIZE);
+
+            if(cmpBytes <= 0) break;
+            write_int32(outFp, cmpBytes);
+            write_bin(outFp, cmpBuf, cmpBytes);
+
+            inpOffset += inpBytes;
+
+            // Wraparound the ringbuffer offset
+            if(inpOffset >= RING_BUFFER_BYTES - MESSAGE_MAX_BYTES)
+                inpOffset = 0;
+        }
+    }
+
+    write_int32(outFp, 0);
+}
+
+
+void test_decompress(FILE* outFp, FILE* inpFp)
+{
+    static char decBuf[DEC_BUFFER_BYTES];
+    int decOffset = 0;
+    LZ4_streamDecode_t lz4StreamDecode_body = { 0 };
+    LZ4_streamDecode_t* lz4StreamDecode = &lz4StreamDecode_body;
+
+    for(;;) {
+        int  cmpBytes = 0;
+        char cmpBuf[CMPBUFSIZE];
+
+        {   const size_t r0 = read_int32(inpFp, &cmpBytes);
+            size_t r1;
+            if(r0 != 1 || cmpBytes <= 0)
+                break;
+
+            r1 = read_bin(inpFp, cmpBuf, cmpBytes);
+            if(r1 != (size_t) cmpBytes)
+                break;
+        }
+
+        {   char* const decPtr = &decBuf[decOffset];
+            const int decBytes = LZ4_decompress_safe_continue(
+                lz4StreamDecode, cmpBuf, decPtr, cmpBytes, MESSAGE_MAX_BYTES);
+            if(decBytes <= 0)
+                break;
+
+            decOffset += decBytes;
+            write_bin(outFp, decPtr, decBytes);
+
+            // Wraparound the ringbuffer offset
+            if(decOffset >= DEC_BUFFER_BYTES - MESSAGE_MAX_BYTES)
+                decOffset = 0;
+        }
+    }
+}
+
+
+// Compare 2 files content
+// return 0 if identical
+// return ByteNb>0 if different
+size_t compare(FILE* f0, FILE* f1)
+{
+    size_t result = 1;
+
+    for (;;) {
+        char b0[65536];
+        char b1[65536];
+        const size_t r0 = fread(b0, 1, sizeof(b0), f0);
+        const size_t r1 = fread(b1, 1, sizeof(b1), f1);
+
+        if ((r0==0) && (r1==0)) return 0;   // success
+
+        if (r0 != r1) {
+            size_t smallest = r0;
+            if (r1<r0) smallest = r1;
+            result += smallest;
+            break;
+        }
+
+        if (memcmp(b0, b1, r0)) {
+            unsigned errorPos = 0;
+            while ((errorPos < r0) && (b0[errorPos]==b1[errorPos])) errorPos++;
+            result += errorPos;
+            break;
+        }
+
+        result += sizeof(b0);
+    }
+
+    return result;
+}
+
+
+int main(int argc, const char** argv)
+{
+    char inpFilename[256] = { 0 };
+    char lz4Filename[256] = { 0 };
+    char decFilename[256] = { 0 };
+    unsigned fileID = 1;
+    unsigned pause = 0;
+
+
+    if(argc < 2) {
+        printf("Please specify input filename\n");
+        return 0;
+    }
+
+    if (!strcmp(argv[1], "-p")) { pause = 1; fileID = 2; }
+
+    snprintf(inpFilename, 256, "%s", argv[fileID]);
+    snprintf(lz4Filename, 256, "%s.lz4s-%d", argv[fileID], 9);
+    snprintf(decFilename, 256, "%s.lz4s-%d.dec", argv[fileID], 9);
+
+    printf("input   = [%s]\n", inpFilename);
+    printf("lz4     = [%s]\n", lz4Filename);
+    printf("decoded = [%s]\n", decFilename);
+
+    // compress
+    {   FILE* const inpFp = fopen(inpFilename, "rb");
+        FILE* const outFp = fopen(lz4Filename, "wb");
+
+        test_compress(outFp, inpFp);
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // decompress
+    {   FILE* const inpFp = fopen(lz4Filename, "rb");
+        FILE* const outFp = fopen(decFilename, "wb");
+
+        test_decompress(outFp, inpFp);
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // verify
+    {   FILE* const inpFp = fopen(inpFilename, "rb");
+        FILE* const decFp = fopen(decFilename, "rb");
+
+        const size_t cmp = compare(inpFp, decFp);
+        if(0 == cmp) {
+            printf("Verify : OK\n");
+        } else {
+            printf("Verify : NG : error at pos %u\n", (unsigned)cmp-1);
+        }
+
+        fclose(decFp);
+        fclose(inpFp);
+    }
+
+    if (pause) {
+        int unused;
+        printf("Press enter to continue ...\n");
+        unused = getchar(); (void)unused;   /* silence static analyzer */
+    }
+
+    return 0;
+}

lz4.mod/lz4/examples/Makefile

@@ -0,0 +1,108 @@
+# ##########################################################################
+# LZ4 examples - Makefile
+# Copyright (C) Yann Collet 2011-2020
+#
+# GPL v2 License
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# You can contact the author at :
+#  - LZ4 source repository : https://github.com/lz4/lz4
+#  - LZ4 forum froup : https://groups.google.com/forum/#!forum/lz4c
+# ##########################################################################
+# This makefile compile and test
+# example programs, using (mostly) LZ4 streaming library,
+# kindly provided by Takayuki Matsuoka
+# ##########################################################################
+
+CPPFLAGS += -I../lib
+CFLAGS   ?= -O3
+CFLAGS   += -std=gnu99 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Wstrict-prototypes
+FLAGS    := $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(MOREFLAGS)
+
+TESTFILE  = Makefile
+LZ4DIR   := ../lib
+LZ4       = ../programs/lz4
+
+include ../Makefile.inc
+
+default: all
+
+all: printVersion doubleBuffer dictionaryRandomAccess ringBuffer ringBufferHC \
+     lineCompress frameCompress simpleBuffer
+
+$(LZ4DIR)/liblz4.a: $(LZ4DIR)/lz4.c $(LZ4DIR)/lz4hc.c $(LZ4DIR)/lz4frame.c $(LZ4DIR)/lz4.h $(LZ4DIR)/lz4hc.h $(LZ4DIR)/lz4frame.h $(LZ4DIR)/lz4frame_static.h
+	$(MAKE) -C $(LZ4DIR) liblz4.a
+
+printVersion: printVersion.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+doubleBuffer: blockStreaming_doubleBuffer.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+dictionaryRandomAccess: dictionaryRandomAccess.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+ringBuffer  : blockStreaming_ringBuffer.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+ringBufferHC: HCStreaming_ringBuffer.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+lineCompress: blockStreaming_lineByLine.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+frameCompress: frameCompress.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+compressFunctions: compress_functions.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT) -lrt
+
+simpleBuffer: simple_buffer.c $(LZ4DIR)/liblz4.a
+	$(CC) $(FLAGS) $^ -o $@$(EXT)
+
+$(LZ4) :
+	$(MAKE) -C ../programs lz4
+
+test : all $(LZ4)
+	@echo "\n=== Print Version ==="
+	./printVersion$(EXT)
+	@echo "\n=== Simple compression example ==="
+	./simpleBuffer$(EXT)
+	@echo "\n=== Double-buffer ==="
+	./doubleBuffer$(EXT) $(TESTFILE)
+	@echo "\n=== Ring Buffer ==="
+	./ringBuffer$(EXT)   $(TESTFILE)
+	@echo "\n=== Ring Buffer + LZ4 HC ==="
+	./ringBufferHC$(EXT) $(TESTFILE)
+	@echo "\n=== Compress line by line ==="
+	./lineCompress$(EXT) $(TESTFILE)
+	@echo "\n=== Dictionary Random Access ==="
+	./dictionaryRandomAccess$(EXT) $(TESTFILE) $(TESTFILE) 1100 1400
+	@echo "\n=== Frame compression ==="
+	./frameCompress$(EXT) $(TESTFILE)
+	$(LZ4) -vt $(TESTFILE).lz4
+
+.PHONY: cxxtest
+cxxtest: CFLAGS := -O3 -Wall -Wextra -Wundef -Wshadow -Wcast-align -Werror
+cxxtest: clean
+	CC=$(CXX) $(MAKE) -C . all CFLAGS="$(CFLAGS)"
+
+clean:
+	@rm -f core *.o *.dec *-0 *-9 *-8192 *.lz4s *.lz4 \
+	 printVersion$(EXT) doubleBuffer$(EXT) dictionaryRandomAccess$(EXT) \
+	 ringBuffer$(EXT) ringBufferHC$(EXT) lineCompress$(EXT) frameCompress$(EXT) \
+	 compressFunctions$(EXT) simpleBuffer$(EXT)
+	@echo Cleaning completed

lz4.mod/lz4/examples/README.md

@@ -0,0 +1,11 @@
+# LZ4 examples
+
+All examples are GPL-v2 licensed.
+
+## Documents
+
+ - [Streaming API Basics](streaming_api_basics.md)
+ - Examples
+     - [Double Buffer](blockStreaming_doubleBuffer.md)
+     - [Line by Line Text Compression](blockStreaming_lineByLine.md)
+     - [Dictionary Random Access](dictionaryRandomAccess.md)

lz4.mod/lz4/examples/blockStreaming_doubleBuffer.c

@@ -0,0 +1,202 @@
+// LZ4 streaming API example : double buffer
+// Copyright : Takayuki Matsuoka
+
+
+#if defined(_MSC_VER) && (_MSC_VER <= 1800)  /* Visual Studio <= 2013 */
+#  define _CRT_SECURE_NO_WARNINGS
+#  define snprintf sprintf_s
+#endif
+#include "lz4.h"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+enum {
+    BLOCK_BYTES = 1024 * 8,
+//  BLOCK_BYTES = 1024 * 64,
+};
+
+
+size_t write_int(FILE* fp, int i) {
+    return fwrite(&i, sizeof(i), 1, fp);
+}
+
+size_t write_bin(FILE* fp, const void* array, size_t arrayBytes) {
+    return fwrite(array, 1, arrayBytes, fp);
+}
+
+size_t read_int(FILE* fp, int* i) {
+    return fread(i, sizeof(*i), 1, fp);
+}
+
+size_t read_bin(FILE* fp, void* array, size_t arrayBytes) {
+    return fread(array, 1, arrayBytes, fp);
+}
+
+
+void test_compress(FILE* outFp, FILE* inpFp)
+{
+    LZ4_stream_t lz4Stream_body;
+    LZ4_stream_t* lz4Stream = &lz4Stream_body;
+
+    char inpBuf[2][BLOCK_BYTES];
+    int  inpBufIndex = 0;
+
+    LZ4_initStream(lz4Stream, sizeof (*lz4Stream));
+
+    for(;;) {
+        char* const inpPtr = inpBuf[inpBufIndex];
+        const int inpBytes = (int) read_bin(inpFp, inpPtr, BLOCK_BYTES);
+        if(0 == inpBytes) {
+            break;
+        }
+
+        {
+            char cmpBuf[LZ4_COMPRESSBOUND(BLOCK_BYTES)];
+            const int cmpBytes = LZ4_compress_fast_continue(
+                lz4Stream, inpPtr, cmpBuf, inpBytes, sizeof(cmpBuf), 1);
+            if(cmpBytes <= 0) {
+                break;
+            }
+            write_int(outFp, cmpBytes);
+            write_bin(outFp, cmpBuf, (size_t) cmpBytes);
+        }
+
+        inpBufIndex = (inpBufIndex + 1) % 2;
+    }
+
+    write_int(outFp, 0);
+}
+
+
+void test_decompress(FILE* outFp, FILE* inpFp)
+{
+    LZ4_streamDecode_t lz4StreamDecode_body;
+    LZ4_streamDecode_t* lz4StreamDecode = &lz4StreamDecode_body;
+
+    char decBuf[2][BLOCK_BYTES];
+    int  decBufIndex = 0;
+
+    LZ4_setStreamDecode(lz4StreamDecode, NULL, 0);
+
+    for(;;) {
+        char cmpBuf[LZ4_COMPRESSBOUND(BLOCK_BYTES)];
+        int  cmpBytes = 0;
+
+        {
+            const size_t readCount0 = read_int(inpFp, &cmpBytes);
+            if(readCount0 != 1 || cmpBytes <= 0) {
+                break;
+            }
+
+            const size_t readCount1 = read_bin(inpFp, cmpBuf, (size_t) cmpBytes);
+            if(readCount1 != (size_t) cmpBytes) {
+                break;
+            }
+        }
+
+        {
+            char* const decPtr = decBuf[decBufIndex];
+            const int decBytes = LZ4_decompress_safe_continue(
+                lz4StreamDecode, cmpBuf, decPtr, cmpBytes, BLOCK_BYTES);
+            if(decBytes <= 0) {
+                break;
+            }
+            write_bin(outFp, decPtr, (size_t) decBytes);
+        }
+
+        decBufIndex = (decBufIndex + 1) % 2;
+    }
+}
+
+
+int compare(FILE* fp0, FILE* fp1)
+{
+    int result = 0;
+
+    while(0 == result) {
+        char b0[65536];
+        char b1[65536];
+        const size_t r0 = read_bin(fp0, b0, sizeof(b0));
+        const size_t r1 = read_bin(fp1, b1, sizeof(b1));
+
+        result = (int) r0 - (int) r1;
+
+        if(0 == r0 || 0 == r1) {
+            break;
+        }
+        if(0 == result) {
+            result = memcmp(b0, b1, r0);
+        }
+    }
+
+    return result;
+}
+
+
+int main(int argc, char* argv[])
+{
+    char inpFilename[256] = { 0 };
+    char lz4Filename[256] = { 0 };
+    char decFilename[256] = { 0 };
+
+    if(argc < 2) {
+        printf("Please specify input filename\n");
+        return 0;
+    }
+
+    snprintf(inpFilename, 256, "%s", argv[1]);
+    snprintf(lz4Filename, 256, "%s.lz4s-%d", argv[1], BLOCK_BYTES);
+    snprintf(decFilename, 256, "%s.lz4s-%d.dec", argv[1], BLOCK_BYTES);
+
+    printf("inp = [%s]\n", inpFilename);
+    printf("lz4 = [%s]\n", lz4Filename);
+    printf("dec = [%s]\n", decFilename);
+
+    // compress
+    {
+        FILE* inpFp = fopen(inpFilename, "rb");
+        FILE* outFp = fopen(lz4Filename, "wb");
+
+        printf("compress : %s -> %s\n", inpFilename, lz4Filename);
+        test_compress(outFp, inpFp);
+        printf("compress : done\n");
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // decompress
+    {
+        FILE* inpFp = fopen(lz4Filename, "rb");
+        FILE* outFp = fopen(decFilename, "wb");
+
+        printf("decompress : %s -> %s\n", lz4Filename, decFilename);
+        test_decompress(outFp, inpFp);
+        printf("decompress : done\n");
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // verify
+    {
+        FILE* inpFp = fopen(inpFilename, "rb");
+        FILE* decFp = fopen(decFilename, "rb");
+
+        printf("verify : %s <-> %s\n", inpFilename, decFilename);
+        const int cmp = compare(inpFp, decFp);
+        if(0 == cmp) {
+            printf("verify : OK\n");
+        } else {
+            printf("verify : NG\n");
+        }
+
+        fclose(decFp);
+        fclose(inpFp);
+    }
+
+    return 0;
+}

lz4.mod/lz4/examples/blockStreaming_doubleBuffer.md

@@ -0,0 +1,100 @@
+# LZ4 Streaming API Example : Double Buffer
+by *Takayuki Matsuoka*
+
+`blockStreaming_doubleBuffer.c` is LZ4 Streaming API example which implements double buffer (de)compression.
+
+Please note :
+
+ - Firstly, read "LZ4 Streaming API Basics".
+ - This is relatively advanced application example.
+ - Output file is not compatible with lz4frame and platform dependent.
+
+
+## What's the point of this example ?
+
+ - Handle huge file in small amount of memory
+ - Always better compression ratio than Block API
+ - Uniform block size
+
+
+## How the compression works
+
+First of all, allocate "Double Buffer" for input and LZ4 compressed data buffer for output.
+Double buffer has two pages, "first" page (Page#1) and "second" page (Page#2).
+
+```
+        Double Buffer
+
+      Page#1    Page#2
+    +---------+---------+
+    | Block#1 |         |
+    +----+----+---------+
+         |
+         v
+      {Out#1}
+
+
+      Prefix Dependency
+         +---------+
+         |         |
+         v         |
+    +---------+----+----+
+    | Block#1 | Block#2 |
+    +---------+----+----+
+                   |
+                   v
+                {Out#2}
+
+
+   External Dictionary Mode
+         +---------+
+         |         |
+         |         v
+    +----+----+---------+
+    | Block#3 | Block#2 |
+    +----+----+---------+
+         |
+         v
+      {Out#3}
+
+
+      Prefix Dependency
+         +---------+
+         |         |
+         v         |
+    +---------+----+----+
+    | Block#3 | Block#4 |
+    +---------+----+----+
+                   |
+                   v
+                {Out#4}
+```
+
+Next, read first block to double buffer's first page. And compress it by `LZ4_compress_continue()`.
+For the first time, LZ4 doesn't know any previous dependencies,
+so it just compress the line without dependencies and generates compressed block {Out#1} to LZ4 compressed data buffer.
+After that, write {Out#1} to the file.
+
+Next, read second block to double buffer's second page. And compress it.
+This time, LZ4 can use dependency to Block#1 to improve compression ratio.
+This dependency is called "Prefix mode".
+
+Next, read third block to double buffer's *first* page, and compress it.
+Also this time, LZ4 can use dependency to Block#2.
+This dependency is called "External Dictonaly mode".
+
+Continue these procedure to the end of the file.
+
+
+## How the decompression works
+
+Decompression will do reverse order.
+
+ - Read first compressed block.
+ - Decompress it to the first page and write that page to the file.
+ - Read second compressed block.
+ - Decompress it to the second page and write that page to the file.
+ - Read third compressed block.
+ - Decompress it to the *first* page and write that page to the file.
+
+Continue these procedure to the end of the compressed file.

lz4.mod/lz4/examples/blockStreaming_lineByLine.c

@@ -0,0 +1,211 @@
+// LZ4 streaming API example : line-by-line logfile compression
+// by Takayuki Matsuoka
+
+
+#if defined(_MSC_VER) && (_MSC_VER <= 1800)  /* Visual Studio <= 2013 */
+#  define _CRT_SECURE_NO_WARNINGS
+#  define snprintf sprintf_s
+#endif
+#include "lz4.h"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+static size_t write_uint16(FILE* fp, uint16_t i)
+{
+    return fwrite(&i, sizeof(i), 1, fp);
+}
+
+static size_t write_bin(FILE* fp, const void* array, int arrayBytes)
+{
+    return fwrite(array, 1, arrayBytes, fp);
+}
+
+static size_t read_uint16(FILE* fp, uint16_t* i)
+{
+    return fread(i, sizeof(*i), 1, fp);
+}
+
+static size_t read_bin(FILE* fp, void* array, int arrayBytes)
+{
+    return fread(array, 1, arrayBytes, fp);
+}
+
+
+static void test_compress(
+    FILE* outFp,
+    FILE* inpFp,
+    size_t messageMaxBytes,
+    size_t ringBufferBytes)
+{
+    LZ4_stream_t* const lz4Stream = LZ4_createStream();
+    const size_t cmpBufBytes = LZ4_COMPRESSBOUND(messageMaxBytes);
+    char* const cmpBuf = (char*) malloc(cmpBufBytes);
+    char* const inpBuf = (char*) malloc(ringBufferBytes);
+    int inpOffset = 0;
+
+    for ( ; ; )
+    {
+        char* const inpPtr = &inpBuf[inpOffset];
+
+#if 0
+        // Read random length data to the ring buffer.
+        const int randomLength = (rand() % messageMaxBytes) + 1;
+        const int inpBytes = (int) read_bin(inpFp, inpPtr, randomLength);
+        if (0 == inpBytes) break;
+#else
+        // Read line to the ring buffer.
+        int inpBytes = 0;
+        if (!fgets(inpPtr, (int) messageMaxBytes, inpFp))
+            break;
+        inpBytes = (int) strlen(inpPtr);
+#endif
+
+        {
+            const int cmpBytes = LZ4_compress_fast_continue(
+                lz4Stream, inpPtr, cmpBuf, inpBytes, (int) cmpBufBytes, 1);
+            if (cmpBytes <= 0) break;
+            write_uint16(outFp, (uint16_t) cmpBytes);
+            write_bin(outFp, cmpBuf, cmpBytes);
+
+            // Add and wraparound the ringbuffer offset
+            inpOffset += inpBytes;
+            if ((size_t)inpOffset >= ringBufferBytes - messageMaxBytes) inpOffset = 0;
+        }
+    }
+    write_uint16(outFp, 0);
+
+    free(inpBuf);
+    free(cmpBuf);
+    LZ4_freeStream(lz4Stream);
+}
+
+
+static void test_decompress(
+    FILE* outFp,
+    FILE* inpFp,
+    size_t messageMaxBytes,
+    size_t ringBufferBytes)
+{
+    LZ4_streamDecode_t* const lz4StreamDecode = LZ4_createStreamDecode();
+    char* const cmpBuf = (char*) malloc(LZ4_COMPRESSBOUND(messageMaxBytes));
+    char* const decBuf = (char*) malloc(ringBufferBytes);
+    int decOffset = 0;
+
+    for ( ; ; )
+    {
+        uint16_t cmpBytes = 0;
+
+        if (read_uint16(inpFp, &cmpBytes) != 1) break;
+        if (cmpBytes == 0) break;
+        if (read_bin(inpFp, cmpBuf, cmpBytes) != cmpBytes) break;
+
+        {
+            char* const decPtr = &decBuf[decOffset];
+            const int decBytes = LZ4_decompress_safe_continue(
+                lz4StreamDecode, cmpBuf, decPtr, cmpBytes, (int) messageMaxBytes);
+            if (decBytes <= 0) break;
+            write_bin(outFp, decPtr, decBytes);
+
+            // Add and wraparound the ringbuffer offset
+            decOffset += decBytes;
+            if ((size_t)decOffset >= ringBufferBytes - messageMaxBytes) decOffset = 0;
+        }
+    }
+
+    free(decBuf);
+    free(cmpBuf);
+    LZ4_freeStreamDecode(lz4StreamDecode);
+}
+
+
+static int compare(FILE* f0, FILE* f1)
+{
+    int result = 0;
+    const size_t tempBufferBytes = 65536;
+    char* const b0 = (char*) malloc(tempBufferBytes);
+    char* const b1 = (char*) malloc(tempBufferBytes);
+
+    while(0 == result)
+    {
+        const size_t r0 = fread(b0, 1, tempBufferBytes, f0);
+        const size_t r1 = fread(b1, 1, tempBufferBytes, f1);
+
+        result = (int) r0 - (int) r1;
+
+        if (0 == r0 || 0 == r1) break;
+        if (0 == result) result = memcmp(b0, b1, r0);
+    }
+
+    free(b1);
+    free(b0);
+    return result;
+}
+
+
+int main(int argc, char* argv[])
+{
+    enum {
+        MESSAGE_MAX_BYTES   = 1024,
+        RING_BUFFER_BYTES   = 1024 * 256 + MESSAGE_MAX_BYTES,
+    };
+
+    char inpFilename[256] = { 0 };
+    char lz4Filename[256] = { 0 };
+    char decFilename[256] = { 0 };
+
+    if (argc < 2)
+    {
+        printf("Please specify input filename\n");
+        return 0;
+    }
+
+    snprintf(inpFilename, 256, "%s", argv[1]);
+    snprintf(lz4Filename, 256, "%s.lz4s", argv[1]);
+    snprintf(decFilename, 256, "%s.lz4s.dec", argv[1]);
+
+    printf("inp = [%s]\n", inpFilename);
+    printf("lz4 = [%s]\n", lz4Filename);
+    printf("dec = [%s]\n", decFilename);
+
+    // compress
+    {
+        FILE* inpFp = fopen(inpFilename, "rb");
+        FILE* outFp = fopen(lz4Filename, "wb");
+
+        test_compress(outFp, inpFp, MESSAGE_MAX_BYTES, RING_BUFFER_BYTES);
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // decompress
+    {
+        FILE* inpFp = fopen(lz4Filename, "rb");
+        FILE* outFp = fopen(decFilename, "wb");
+
+        test_decompress(outFp, inpFp, MESSAGE_MAX_BYTES, RING_BUFFER_BYTES);
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // verify
+    {
+        FILE* inpFp = fopen(inpFilename, "rb");
+        FILE* decFp = fopen(decFilename, "rb");
+
+        const int cmp = compare(inpFp, decFp);
+        if (0 == cmp)
+            printf("Verify : OK\n");
+        else
+            printf("Verify : NG\n");
+
+        fclose(decFp);
+        fclose(inpFp);
+    }
+
+    return 0;
+}

lz4.mod/lz4/examples/blockStreaming_lineByLine.md

@@ -0,0 +1,122 @@
+# LZ4 Streaming API Example : Line by Line Text Compression
+by *Takayuki Matsuoka*
+
+`blockStreaming_lineByLine.c` is LZ4 Streaming API example which implements line by line incremental (de)compression.
+
+Please note the following restrictions :
+
+ - Firstly, read "LZ4 Streaming API Basics".
+ - This is relatively advanced application example.
+ - Output file is not compatible with lz4frame and platform dependent.
+
+
+## What's the point of this example ?
+
+ - Line by line incremental (de)compression.
+ - Handle huge file in small amount of memory
+ - Generally better compression ratio than Block API
+ - Non-uniform block size
+
+
+## How the compression works
+
+First of all, allocate "Ring Buffer" for input and LZ4 compressed data buffer for output.
+
+```
+(1)
+    Ring Buffer
+
+    +--------+
+    | Line#1 |
+    +---+----+
+        |
+        v
+     {Out#1}
+
+
+(2)
+    Prefix Mode Dependency
+          +----+
+          |    |
+          v    |
+    +--------+-+------+
+    | Line#1 | Line#2 |
+    +--------+---+----+
+                 |
+                 v
+              {Out#2}
+
+
+(3)
+          Prefix   Prefix
+          +----+   +----+
+          |    |   |    |
+          v    |   v    |
+    +--------+-+------+-+------+
+    | Line#1 | Line#2 | Line#3 |
+    +--------+--------+---+----+
+                          |
+                          v
+                       {Out#3}
+
+
+(4)
+                        External Dictionary Mode
+                +----+   +----+
+                |    |   |    |
+                v    |   v    |
+    ------+--------+-+------+-+--------+
+          |  ....  | Line#X | Line#X+1 |
+    ------+--------+--------+-----+----+
+                            ^     |
+                            |     v
+                            |  {Out#X+1}
+                            |
+                          Reset
+
+
+(5)
+                                    Prefix
+                                    +-----+
+                                    |     |
+                                    v     |
+    ------+--------+--------+----------+--+-------+
+          |  ....  | Line#X | Line#X+1 | Line#X+2 |
+    ------+--------+--------+----------+-----+----+
+                            ^                |
+                            |                v
+                            |            {Out#X+2}
+                            |
+                          Reset
+```
+
+Next (see (1)), read first line to ringbuffer and compress it by `LZ4_compress_continue()`.
+For the first time, LZ4 doesn't know any previous dependencies,
+so it just compress the line without dependencies and generates compressed line {Out#1} to LZ4 compressed data buffer.
+After that, write {Out#1} to the file and forward ringbuffer offset.
+
+Do the same things to second line (see (2)).
+But in this time, LZ4 can use dependency to Line#1 to improve compression ratio.
+This dependency is called "Prefix mode".
+
+Eventually, we'll reach end of ringbuffer at Line#X (see (4)).
+This time, we should reset ringbuffer offset.
+After resetting, at Line#X+1 pointer is not adjacent, but LZ4 still maintain its memory.
+This is called "External Dictionary Mode".
+
+In Line#X+2 (see (5)), finally LZ4 forget almost all memories but still remains Line#X+1.
+This is the same situation as Line#2.
+
+Continue these procedure to the end of text file.
+
+
+## How the decompression works
+
+Decompression will do reverse order.
+
+ - Read compressed line from the file to buffer.
+ - Decompress it to the ringbuffer.
+ - Output decompressed plain text line to the file.
+ - Forward ringbuffer offset. If offset exceeds end of the ringbuffer, reset it.
+
+Continue these procedure to the end of the compressed file.

lz4.mod/lz4/examples/blockStreaming_ringBuffer.c

@@ -0,0 +1,190 @@
+/* LZ4 streaming API example : ring buffer
+ * Based on sample code from Takayuki Matsuoka */
+
+
+/**************************************
+ * Compiler Options
+ **************************************/
+#if defined(_MSC_VER) && (_MSC_VER <= 1800)  /* Visual Studio <= 2013 */
+#  define _CRT_SECURE_NO_WARNINGS
+#  define snprintf sprintf_s
+#endif
+
+
+/**************************************
+ * Includes
+ **************************************/
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include "lz4.h"
+
+
+enum {
+    MESSAGE_MAX_BYTES   = 1024,
+    RING_BUFFER_BYTES   = 1024 * 8 + MESSAGE_MAX_BYTES,
+    DECODE_RING_BUFFER  = RING_BUFFER_BYTES + MESSAGE_MAX_BYTES   /* Intentionally larger, to test unsynchronized ring buffers */
+};
+
+
+size_t write_int32(FILE* fp, int32_t i) {
+    return fwrite(&i, sizeof(i), 1, fp);
+}
+
+size_t write_bin(FILE* fp, const void* array, int arrayBytes) {
+    return fwrite(array, 1, arrayBytes, fp);
+}
+
+size_t read_int32(FILE* fp, int32_t* i) {
+    return fread(i, sizeof(*i), 1, fp);
+}
+
+size_t read_bin(FILE* fp, void* array, int arrayBytes) {
+    return fread(array, 1, arrayBytes, fp);
+}
+
+
+void test_compress(FILE* outFp, FILE* inpFp)
+{
+    LZ4_stream_t lz4Stream_body = { { 0 } };
+    LZ4_stream_t* lz4Stream = &lz4Stream_body;
+
+    static char inpBuf[RING_BUFFER_BYTES];
+    int inpOffset = 0;
+
+    for(;;) {
+        // Read random length ([1,MESSAGE_MAX_BYTES]) data to the ring buffer.
+        char* const inpPtr = &inpBuf[inpOffset];
+        const int randomLength = (rand() % MESSAGE_MAX_BYTES) + 1;
+        const int inpBytes = (int) read_bin(inpFp, inpPtr, randomLength);
+        if (0 == inpBytes) break;
+
+        {
+#define CMPBUFSIZE (LZ4_COMPRESSBOUND(MESSAGE_MAX_BYTES))
+            char cmpBuf[CMPBUFSIZE];
+            const int cmpBytes = LZ4_compress_fast_continue(lz4Stream, inpPtr, cmpBuf, inpBytes, CMPBUFSIZE, 0);
+            if(cmpBytes <= 0) break;
+            write_int32(outFp, cmpBytes);
+            write_bin(outFp, cmpBuf, cmpBytes);
+
+            inpOffset += inpBytes;
+
+            // Wraparound the ringbuffer offset
+            if(inpOffset >= RING_BUFFER_BYTES - MESSAGE_MAX_BYTES) inpOffset = 0;
+        }
+    }
+
+    write_int32(outFp, 0);
+}
+
+
+void test_decompress(FILE* outFp, FILE* inpFp)
+{
+    static char decBuf[DECODE_RING_BUFFER];
+    int decOffset = 0;
+    LZ4_streamDecode_t lz4StreamDecode_body = { { 0 } };
+    LZ4_streamDecode_t* lz4StreamDecode = &lz4StreamDecode_body;
+
+    for(;;) {
+        int cmpBytes = 0;
+        char cmpBuf[CMPBUFSIZE];
+
+        {   const size_t r0 = read_int32(inpFp, &cmpBytes);
+            if(r0 != 1 || cmpBytes <= 0) break;
+
+            const size_t r1 = read_bin(inpFp, cmpBuf, cmpBytes);
+            if(r1 != (size_t) cmpBytes) break;
+        }
+
+        {   char* const decPtr = &decBuf[decOffset];
+            const int decBytes = LZ4_decompress_safe_continue(
+                lz4StreamDecode, cmpBuf, decPtr, cmpBytes, MESSAGE_MAX_BYTES);
+            if(decBytes <= 0) break;
+            decOffset += decBytes;
+            write_bin(outFp, decPtr, decBytes);
+
+            // Wraparound the ringbuffer offset
+            if(decOffset >= DECODE_RING_BUFFER - MESSAGE_MAX_BYTES) decOffset = 0;
+        }
+    }
+}
+
+
+int compare(FILE* f0, FILE* f1)
+{
+    int result = 0;
+
+    while (0 == result) {
+        char b0[65536];
+        char b1[65536];
+        const size_t r0 = fread(b0, 1, sizeof(b0), f0);
+        const size_t r1 = fread(b1, 1, sizeof(b1), f1);
+
+        result = (int) r0 - (int) r1;
+
+        if (0 == r0 || 0 == r1) break;
+
+        if (0 == result) result = memcmp(b0, b1, r0);
+    }
+
+    return result;
+}
+
+
+int main(int argc, char** argv)
+{
+    char inpFilename[256] = { 0 };
+    char lz4Filename[256] = { 0 };
+    char decFilename[256] = { 0 };
+
+    if (argc < 2) {
+        printf("Please specify input filename\n");
+        return 0;
+    }
+
+    snprintf(inpFilename, 256, "%s", argv[1]);
+    snprintf(lz4Filename, 256, "%s.lz4s-%d", argv[1], 0);
+    snprintf(decFilename, 256, "%s.lz4s-%d.dec", argv[1], 0);
+
+    printf("inp = [%s]\n", inpFilename);
+    printf("lz4 = [%s]\n", lz4Filename);
+    printf("dec = [%s]\n", decFilename);
+
+    // compress
+    {   FILE* const inpFp = fopen(inpFilename, "rb");
+        FILE* const outFp = fopen(lz4Filename, "wb");
+
+        test_compress(outFp, inpFp);
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // decompress
+    {   FILE* const inpFp = fopen(lz4Filename, "rb");
+        FILE* const outFp = fopen(decFilename, "wb");
+
+        test_decompress(outFp, inpFp);
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    // verify
+    {   FILE* const inpFp = fopen(inpFilename, "rb");
+        FILE* const decFp = fopen(decFilename, "rb");
+
+        const int cmp = compare(inpFp, decFp);
+        if (0 == cmp) {
+            printf("Verify : OK\n");
+        } else {
+            printf("Verify : NG\n");
+        }
+
+        fclose(decFp);
+        fclose(inpFp);
+    }
+
+    return 0;
+}

lz4.mod/lz4/examples/dictionaryRandomAccess.c

@@ -0,0 +1,280 @@
+// LZ4 API example : Dictionary Random Access
+
+#if defined(_MSC_VER) && (_MSC_VER <= 1800)  /* Visual Studio <= 2013 */
+#  define _CRT_SECURE_NO_WARNINGS
+#  define snprintf sprintf_s
+#endif
+#include "lz4.h"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define MIN(x, y)  ((x) < (y) ? (x) : (y))
+
+enum {
+    BLOCK_BYTES = 1024,  /* 1 KiB of uncompressed data in a block */
+    DICTIONARY_BYTES = 1024, /* Load a 1 KiB dictionary */
+    MAX_BLOCKS = 1024 /* For simplicity of implementation */
+};
+
+/**
+ * Magic bytes for this test case.
+ * This is not a great magic number because it is a common word in ASCII.
+ * However, it is important to have some versioning system in your format.
+ */
+const char kTestMagic[] = { 'T', 'E', 'S', 'T' };
+
+
+void write_int(FILE* fp, int i) {
+    size_t written = fwrite(&i, sizeof(i), 1, fp);
+    if (written != 1) { exit(10); }
+}
+
+void write_bin(FILE* fp, const void* array, size_t arrayBytes) {
+    size_t written = fwrite(array, 1, arrayBytes, fp);
+    if (written != arrayBytes) { exit(11); }
+}
+
+void read_int(FILE* fp, int* i) {
+    size_t read = fread(i, sizeof(*i), 1, fp);
+    if (read != 1) { exit(12); }
+}
+
+size_t read_bin(FILE* fp, void* array, size_t arrayBytes) {
+    size_t read = fread(array, 1, arrayBytes, fp);
+    if (ferror(fp)) { exit(12); }
+    return read;
+}
+
+void seek_bin(FILE* fp, long offset, int origin) {
+    if (fseek(fp, offset, origin)) { exit(14); }
+}
+
+
+void test_compress(FILE* outFp, FILE* inpFp, void *dict, int dictSize)
+{
+    LZ4_stream_t lz4Stream_body;
+    LZ4_stream_t* lz4Stream = &lz4Stream_body;
+
+    char inpBuf[BLOCK_BYTES];
+    int offsets[MAX_BLOCKS];
+    int *offsetsEnd = offsets;
+
+
+    LZ4_initStream(lz4Stream, sizeof(*lz4Stream));
+
+    /* Write header magic */
+    write_bin(outFp, kTestMagic, sizeof(kTestMagic));
+
+    *offsetsEnd++ = sizeof(kTestMagic);
+    /* Write compressed data blocks.  Each block contains BLOCK_BYTES of plain
+       data except possibly the last. */
+    for(;;) {
+        const int inpBytes = (int) read_bin(inpFp, inpBuf, BLOCK_BYTES);
+        if(0 == inpBytes) {
+            break;
+        }
+
+        /* Forget previously compressed data and load the dictionary */
+        LZ4_loadDict(lz4Stream, (const char*) dict, dictSize);
+        {
+            char cmpBuf[LZ4_COMPRESSBOUND(BLOCK_BYTES)];
+            const int cmpBytes = LZ4_compress_fast_continue(
+                lz4Stream, inpBuf, cmpBuf, inpBytes, sizeof(cmpBuf), 1);
+            if(cmpBytes <= 0) { exit(1); }
+            write_bin(outFp, cmpBuf, (size_t)cmpBytes);
+            /* Keep track of the offsets */
+            *offsetsEnd = *(offsetsEnd - 1) + cmpBytes;
+            ++offsetsEnd;
+        }
+        if (offsetsEnd - offsets > MAX_BLOCKS) { exit(2); }
+    }
+    /* Write the tailing jump table */
+    {
+        int *ptr = offsets;
+        while (ptr != offsetsEnd) {
+            write_int(outFp, *ptr++);
+        }
+        write_int(outFp, (int) (offsetsEnd - offsets));
+    }
+}
+
+
+void test_decompress(FILE* outFp, FILE* inpFp, void *dict, int dictSize, int offset, int length)
+{
+    LZ4_streamDecode_t lz4StreamDecode_body;
+    LZ4_streamDecode_t* lz4StreamDecode = &lz4StreamDecode_body;
+
+    /* The blocks [currentBlock, endBlock) contain the data we want */
+    int currentBlock = offset / BLOCK_BYTES;
+    int endBlock = ((offset + length - 1) / BLOCK_BYTES) + 1;
+
+    char decBuf[BLOCK_BYTES];
+    int offsets[MAX_BLOCKS];
+
+    /* Special cases */
+    if (length == 0) { return; }
+
+    /* Read the magic bytes */
+    {
+        char magic[sizeof(kTestMagic)];
+        size_t read = read_bin(inpFp, magic, sizeof(magic));
+        if (read != sizeof(magic)) { exit(1); }
+        if (memcmp(kTestMagic, magic, sizeof(magic))) { exit(2); }
+    }
+
+    /* Read the offsets tail */
+    {
+        int numOffsets;
+        int block;
+        int *offsetsPtr = offsets;
+        seek_bin(inpFp, -4, SEEK_END);
+        read_int(inpFp, &numOffsets);
+        if (numOffsets <= endBlock) { exit(3); }
+        seek_bin(inpFp, -4 * (numOffsets + 1), SEEK_END);
+        for (block = 0; block <= endBlock; ++block) {
+            read_int(inpFp, offsetsPtr++);
+        }
+    }
+    /* Seek to the first block to read */
+    seek_bin(inpFp, offsets[currentBlock], SEEK_SET);
+    offset = offset % BLOCK_BYTES;
+
+    /* Start decoding */
+    for(; currentBlock < endBlock; ++currentBlock) {
+        char cmpBuf[LZ4_COMPRESSBOUND(BLOCK_BYTES)];
+        /* The difference in offsets is the size of the block */
+        int  cmpBytes = offsets[currentBlock + 1] - offsets[currentBlock];
+        {
+            const size_t read = read_bin(inpFp, cmpBuf, (size_t)cmpBytes);
+            if(read != (size_t)cmpBytes) { exit(4); }
+        }
+
+        /* Load the dictionary */
+        LZ4_setStreamDecode(lz4StreamDecode, (const char*) dict, dictSize);
+        {
+            const int decBytes = LZ4_decompress_safe_continue(
+                lz4StreamDecode, cmpBuf, decBuf, cmpBytes, BLOCK_BYTES);
+            if(decBytes <= 0) { exit(5); }
+            {
+                /* Write out the part of the data we care about */
+                int blockLength = MIN(length, (decBytes - offset));
+                write_bin(outFp, decBuf + offset, (size_t)blockLength);
+                offset = 0;
+                length -= blockLength;
+            }
+        }
+    }
+}
+
+
+int compare(FILE* fp0, FILE* fp1, int length)
+{
+    int result = 0;
+
+    while(0 == result) {
+        char b0[4096];
+        char b1[4096];
+        const size_t r0 = read_bin(fp0, b0, MIN(length, (int)sizeof(b0)));
+        const size_t r1 = read_bin(fp1, b1, MIN(length, (int)sizeof(b1)));
+
+        result = (int) r0 - (int) r1;
+
+        if(0 == r0 || 0 == r1) {
+            break;
+        }
+        if(0 == result) {
+            result = memcmp(b0, b1, r0);
+        }
+        length -= r0;
+    }
+
+    return result;
+}
+
+
+int main(int argc, char* argv[])
+{
+    char inpFilename[256] = { 0 };
+    char lz4Filename[256] = { 0 };
+    char decFilename[256] = { 0 };
+    char dictFilename[256] = { 0 };
+    int offset;
+    int length;
+    char dict[DICTIONARY_BYTES];
+    int dictSize;
+
+    if(argc < 5) {
+        printf("Usage: %s input dictionary offset length", argv[0]);
+        return 0;
+    }
+
+    snprintf(inpFilename, 256, "%s", argv[1]);
+    snprintf(lz4Filename, 256, "%s.lz4s-%d", argv[1], BLOCK_BYTES);
+    snprintf(decFilename, 256, "%s.lz4s-%d.dec", argv[1], BLOCK_BYTES);
+    snprintf(dictFilename, 256, "%s", argv[2]);
+    offset = atoi(argv[3]);
+    length = atoi(argv[4]);
+
+    printf("inp    = [%s]\n", inpFilename);
+    printf("lz4    = [%s]\n", lz4Filename);
+    printf("dec    = [%s]\n", decFilename);
+    printf("dict   = [%s]\n", dictFilename);
+    printf("offset = [%d]\n", offset);
+    printf("length = [%d]\n", length);
+
+    /* Load dictionary */
+    {
+        FILE* dictFp = fopen(dictFilename, "rb");
+        dictSize = (int)read_bin(dictFp, dict, DICTIONARY_BYTES);
+        fclose(dictFp);
+    }
+
+    /* compress */
+    {
+        FILE* inpFp = fopen(inpFilename, "rb");
+        FILE* outFp = fopen(lz4Filename, "wb");
+
+        printf("compress : %s -> %s\n", inpFilename, lz4Filename);
+        test_compress(outFp, inpFp, dict, dictSize);
+        printf("compress : done\n");
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    /* decompress */
+    {
+        FILE* inpFp = fopen(lz4Filename, "rb");
+        FILE* outFp = fopen(decFilename, "wb");
+
+        printf("decompress : %s -> %s\n", lz4Filename, decFilename);
+        test_decompress(outFp, inpFp, dict, DICTIONARY_BYTES, offset, length);
+        printf("decompress : done\n");
+
+        fclose(outFp);
+        fclose(inpFp);
+    }
+
+    /* verify */
+    {
+        FILE* inpFp = fopen(inpFilename, "rb");
+        FILE* decFp = fopen(decFilename, "rb");
+        seek_bin(inpFp, offset, SEEK_SET);
+
+        printf("verify : %s <-> %s\n", inpFilename, decFilename);
+        const int cmp = compare(inpFp, decFp, length);
+        if(0 == cmp) {
+            printf("verify : OK\n");
+        } else {
+            printf("verify : NG\n");
+        }
+
+        fclose(decFp);
+        fclose(inpFp);
+    }
+
+    return 0;
+}

lz4.mod/lz4/examples/dictionaryRandomAccess.md

@@ -0,0 +1,67 @@
+# LZ4 API Example : Dictionary Random Access
+
+`dictionaryRandomAccess.c` is LZ4 API example which implements dictionary compression and random access decompression.
+
+Please note that the output file is not compatible with lz4frame and is platform dependent.
+
+
+## What's the point of this example ?
+
+ - Dictionary based compression for homogeneous files.
+ - Random access to compressed blocks.
+
+
+## How the compression works
+
+Reads the dictionary from a file, and uses it as the history for each block.
+This allows each block to be independent, but maintains compression ratio.
+
+```
+    Dictionary
+         +
+         |
+         v
+    +---------+
+    | Block#1 |
+    +----+----+
+         |
+         v
+      {Out#1}
+
+
+    Dictionary
+         +
+         |
+         v
+    +---------+
+    | Block#2 |
+    +----+----+
+         |
+         v
+      {Out#2}
+```
+
+After writing the magic bytes `TEST` and then the compressed blocks, write out the jump table.
+The last 4 bytes is an integer containing the number of blocks in the stream.
+If there are `N` blocks, then just before the last 4 bytes is `N + 1` 4 byte integers containing the offsets at the beginning and end of each block.
+Let `Offset#K` be the total number of bytes written after writing out `Block#K` *including* the magic bytes for simplicity.
+
+```
++------+---------+     +---------+---+----------+     +----------+-----+
+| TEST | Block#1 | ... | Block#N | 4 | Offset#1 | ... | Offset#N | N+1 |
++------+---------+     +---------+---+----------+     +----------+-----+
+```
+
+## How the decompression works
+
+Decompression will do reverse order.
+
+ - Seek to the last 4 bytes of the file and read the number of offsets.
+ - Read each offset into an array.
+ - Seek to the first block containing data we want to read.
+   We know where to look because we know each block contains a fixed amount of uncompressed data, except possibly the last.
+ - Decompress it and write what data we need from it to the file.
+ - Read the next block.
+ - Decompress it and write that page to the file.
+
+Continue these procedure until all the required data has been read.

lz4.mod/lz4/examples/frameCompress.c

@@ -0,0 +1,401 @@
+/* LZ4frame API example : compress a file
+ * Modified from an example code by Zbigniew Jędrzejewski-Szmek
+ *
+ * This example streams an input file into an output file
+ * using a bounded memory budget.
+ * Input is read in chunks of IN_CHUNK_SIZE */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include <lz4frame.h>
+
+
+#define IN_CHUNK_SIZE  (16*1024)
+
+static const LZ4F_preferences_t kPrefs = {
+    { LZ4F_max256KB, LZ4F_blockLinked, LZ4F_noContentChecksum, LZ4F_frame,
+      0 /* unknown content size */, 0 /* no dictID */ , LZ4F_noBlockChecksum },
+    0,   /* compression level; 0 == default */
+    0,   /* autoflush */
+    0,   /* favor decompression speed */
+    { 0, 0, 0 },  /* reserved, must be set to 0 */
+};
+
+
+/* safe_fwrite() :
+ * performs fwrite(), ensure operation success, or immediately exit() */
+static void safe_fwrite(void* buf, size_t eltSize, size_t nbElt, FILE* f)
+{
+    size_t const writtenSize = fwrite(buf, eltSize, nbElt, f);
+    size_t const expectedSize = eltSize * nbElt;
+    if (nbElt>0) assert(expectedSize / nbElt == eltSize);  /* check overflow */
+    if (writtenSize < expectedSize) {
+        if (ferror(f))  /* note : ferror() must follow fwrite */
+            fprintf(stderr, "Write failed \n");
+        else
+            fprintf(stderr, "Write too short \n");
+        exit(1);
+    }
+}
+
+
+/* ================================================= */
+/*     Streaming Compression example               */
+/* ================================================= */
+
+typedef struct {
+    int error;
+    unsigned long long size_in;
+    unsigned long long size_out;
+} compressResult_t;
+
+static compressResult_t
+compress_file_internal(FILE* f_in, FILE* f_out,
+                       LZ4F_compressionContext_t ctx,
+                       void* inBuff,  size_t inChunkSize,
+                       void* outBuff, size_t outCapacity)
+{
+    compressResult_t result = { 1, 0, 0 };  /* result for an error */
+    unsigned long long count_in = 0, count_out;
+
+    assert(f_in != NULL); assert(f_out != NULL);
+    assert(ctx != NULL);
+    assert(outCapacity >= LZ4F_HEADER_SIZE_MAX);
+    assert(outCapacity >= LZ4F_compressBound(inChunkSize, &kPrefs));
+
+    /* write frame header */
+    {   size_t const headerSize = LZ4F_compressBegin(ctx, outBuff, outCapacity, &kPrefs);
+        if (LZ4F_isError(headerSize)) {
+            printf("Failed to start compression: error %u \n", (unsigned)headerSize);
+            return result;
+        }
+        count_out = headerSize;
+        printf("Buffer size is %u bytes, header size %u bytes \n",
+                (unsigned)outCapacity, (unsigned)headerSize);
+        safe_fwrite(outBuff, 1, headerSize, f_out);
+    }
+
+    /* stream file */
+    for (;;) {
+        size_t const readSize = fread(inBuff, 1, IN_CHUNK_SIZE, f_in);
+        if (readSize == 0) break; /* nothing left to read from input file */
+        count_in += readSize;
+
+        size_t const compressedSize = LZ4F_compressUpdate(ctx,
+                                                outBuff, outCapacity,
+                                                inBuff, readSize,
+                                                NULL);
+        if (LZ4F_isError(compressedSize)) {
+            printf("Compression failed: error %u \n", (unsigned)compressedSize);
+            return result;
+        }
+
+        printf("Writing %u bytes\n", (unsigned)compressedSize);
+        safe_fwrite(outBuff, 1, compressedSize, f_out);
+        count_out += compressedSize;
+    }
+
+    /* flush whatever remains within internal buffers */
+    {   size_t const compressedSize = LZ4F_compressEnd(ctx,
+                                                outBuff, outCapacity,
+                                                NULL);
+        if (LZ4F_isError(compressedSize)) {
+            printf("Failed to end compression: error %u \n", (unsigned)compressedSize);
+            return result;
+        }
+
+        printf("Writing %u bytes \n", (unsigned)compressedSize);
+        safe_fwrite(outBuff, 1, compressedSize, f_out);
+        count_out += compressedSize;
+    }
+
+    result.size_in = count_in;
+    result.size_out = count_out;
+    result.error = 0;
+    return result;
+}
+
+static compressResult_t
+compress_file(FILE* f_in, FILE* f_out)
+{
+    assert(f_in != NULL);
+    assert(f_out != NULL);
+
+    /* resource allocation */
+    LZ4F_compressionContext_t ctx;
+    size_t const ctxCreation = LZ4F_createCompressionContext(&ctx, LZ4F_VERSION);
+    void* const src = malloc(IN_CHUNK_SIZE);
+    size_t const outbufCapacity = LZ4F_compressBound(IN_CHUNK_SIZE, &kPrefs);   /* large enough for any input <= IN_CHUNK_SIZE */
+    void* const outbuff = malloc(outbufCapacity);
+
+    compressResult_t result = { 1, 0, 0 };  /* == error (default) */
+    if (!LZ4F_isError(ctxCreation) && src && outbuff) {
+        result = compress_file_internal(f_in, f_out,
+                                        ctx,
+                                        src, IN_CHUNK_SIZE,
+                                        outbuff, outbufCapacity);
+    } else {
+        printf("error : resource allocation failed \n");
+    }
+
+    LZ4F_freeCompressionContext(ctx);   /* supports free on NULL */
+    free(src);
+    free(outbuff);
+    return result;
+}
+
+
+/* ================================================= */
+/*     Streaming decompression example               */
+/* ================================================= */
+
+static size_t get_block_size(const LZ4F_frameInfo_t* info) {
+    switch (info->blockSizeID) {
+        case LZ4F_default:
+        case LZ4F_max64KB:  return 1 << 16;
+        case LZ4F_max256KB: return 1 << 18;
+        case LZ4F_max1MB:   return 1 << 20;
+        case LZ4F_max4MB:   return 1 << 22;
+        default:
+            printf("Impossible with expected frame specification (<=v1.6.1)\n");
+            exit(1);
+    }
+}
+
+/* @return : 1==error, 0==success */
+static int
+decompress_file_internal(FILE* f_in, FILE* f_out,
+                         LZ4F_dctx* dctx,
+                         void* src, size_t srcCapacity, size_t filled, size_t alreadyConsumed,
+                         void* dst, size_t dstCapacity)
+{
+    int firstChunk = 1;
+    size_t ret = 1;
+
+    assert(f_in != NULL); assert(f_out != NULL);
+    assert(dctx != NULL);
+    assert(src != NULL); assert(srcCapacity > 0); assert(filled <= srcCapacity); assert(alreadyConsumed <= filled);
+    assert(dst != NULL); assert(dstCapacity > 0);
+
+    /* Decompression */
+    while (ret != 0) {
+        /* Load more input */
+        size_t readSize = firstChunk ? filled : fread(src, 1, srcCapacity, f_in); firstChunk=0;
+        const void* srcPtr = (const char*)src + alreadyConsumed; alreadyConsumed=0;
+        const void* const srcEnd = (const char*)srcPtr + readSize;
+        if (readSize == 0 || ferror(f_in)) {
+            printf("Decompress: not enough input or error reading file\n");
+            return 1;
+        }
+
+        /* Decompress:
+         * Continue while there is more input to read (srcPtr != srcEnd)
+         * and the frame isn't over (ret != 0)
+         */
+        while (srcPtr < srcEnd && ret != 0) {
+            /* Any data within dst has been flushed at this stage */
+            size_t dstSize = dstCapacity;
+            size_t srcSize = (const char*)srcEnd - (const char*)srcPtr;
+            ret = LZ4F_decompress(dctx, dst, &dstSize, srcPtr, &srcSize, /* LZ4F_decompressOptions_t */ NULL);
+            if (LZ4F_isError(ret)) {
+                printf("Decompression error: %s\n", LZ4F_getErrorName(ret));
+                return 1;
+            }
+            /* Flush output */
+            if (dstSize != 0) safe_fwrite(dst, 1, dstSize, f_out);
+            /* Update input */
+            srcPtr = (const char*)srcPtr + srcSize;
+        }
+
+        assert(srcPtr <= srcEnd);
+
+        /* Ensure all input data has been consumed.
+         * It is valid to have multiple frames in the same file,
+         * but this example only supports one frame.
+         */
+        if (srcPtr < srcEnd) {
+            printf("Decompress: Trailing data left in file after frame\n");
+            return 1;
+        }
+    }
+
+    /* Check that there isn't trailing data in the file after the frame.
+     * It is valid to have multiple frames in the same file,
+     * but this example only supports one frame.
+     */
+    {   size_t const readSize = fread(src, 1, 1, f_in);
+        if (readSize != 0 || !feof(f_in)) {
+            printf("Decompress: Trailing data left in file after frame\n");
+            return 1;
+    }   }
+
+    return 0;
+}
+
+
+/* @return : 1==error, 0==completed */
+static int
+decompress_file_allocDst(FILE* f_in, FILE* f_out,
+                        LZ4F_dctx* dctx,
+                        void* src, size_t srcCapacity)
+{
+    assert(f_in != NULL); assert(f_out != NULL);
+    assert(dctx != NULL);
+    assert(src != NULL);
+    assert(srcCapacity >= LZ4F_HEADER_SIZE_MAX);  /* ensure LZ4F_getFrameInfo() can read enough data */
+
+    /* Read Frame header */
+    size_t const readSize = fread(src, 1, srcCapacity, f_in);
+    if (readSize == 0 || ferror(f_in)) {
+        printf("Decompress: not enough input or error reading file\n");
+        return 1;
+    }
+
+    LZ4F_frameInfo_t info;
+    size_t consumedSize = readSize;
+    {   size_t const fires = LZ4F_getFrameInfo(dctx, &info, src, &consumedSize);
+        if (LZ4F_isError(fires)) {
+            printf("LZ4F_getFrameInfo error: %s\n", LZ4F_getErrorName(fires));
+            return 1;
+    }   }
+
+    /* Allocating enough space for an entire block isn't necessary for
+     * correctness, but it allows some memcpy's to be elided.
+     */
+    size_t const dstCapacity = get_block_size(&info);
+    void* const dst = malloc(dstCapacity);
+    if (!dst) { perror("decompress_file(dst)"); return 1; }
+
+    int const decompressionResult = decompress_file_internal(
+                        f_in, f_out,
+                        dctx,
+                        src, srcCapacity, readSize-consumedSize, consumedSize,
+                        dst, dstCapacity);
+
+    free(dst);
+    return decompressionResult;
+}
+
+
+/* @result : 1==error, 0==success */
+static int decompress_file(FILE* f_in, FILE* f_out)
+{
+    assert(f_in != NULL); assert(f_out != NULL);
+
+    /* Resource allocation */
+    void* const src = malloc(IN_CHUNK_SIZE);
+    if (!src) { perror("decompress_file(src)"); return 1; }
+
+    LZ4F_dctx* dctx;
+    {   size_t const dctxStatus = LZ4F_createDecompressionContext(&dctx, LZ4F_VERSION);
+        if (LZ4F_isError(dctxStatus)) {
+            printf("LZ4F_dctx creation error: %s\n", LZ4F_getErrorName(dctxStatus));
+    }   }
+
+    int const result = !dctx ? 1 /* error */ :
+                       decompress_file_allocDst(f_in, f_out, dctx, src, IN_CHUNK_SIZE);
+
+    free(src);
+    LZ4F_freeDecompressionContext(dctx);   /* note : free works on NULL */
+    return result;
+}
+
+
+int compareFiles(FILE* fp0, FILE* fp1)
+{
+    int result = 0;
+
+    while (result==0) {
+        char b0[1024];
+        char b1[1024];
+        size_t const r0 = fread(b0, 1, sizeof(b0), fp0);
+        size_t const r1 = fread(b1, 1, sizeof(b1), fp1);
+
+        result = (r0 != r1);
+        if (!r0 || !r1) break;
+        if (!result) result = memcmp(b0, b1, r0);
+    }
+
+    return result;
+}
+
+
+int main(int argc, const char **argv) {
+    char inpFilename[256] = { 0 };
+    char lz4Filename[256] = { 0 };
+    char decFilename[256] = { 0 };
+
+    if (argc < 2) {
+        printf("Please specify input filename\n");
+        return 0;
+    }
+
+    snprintf(inpFilename, 256, "%s", argv[1]);
+    snprintf(lz4Filename, 256, "%s.lz4", argv[1]);
+    snprintf(decFilename, 256, "%s.lz4.dec", argv[1]);
+
+    printf("inp = [%s]\n", inpFilename);
+    printf("lz4 = [%s]\n", lz4Filename);
+    printf("dec = [%s]\n", decFilename);
+
+    /* compress */
+    {   FILE* const inpFp = fopen(inpFilename, "rb");
+        FILE* const outFp = fopen(lz4Filename, "wb");
+
+        printf("compress : %s -> %s\n", inpFilename, lz4Filename);
+        compressResult_t const ret = compress_file(inpFp, outFp);
+
+        fclose(outFp);
+        fclose(inpFp);
+
+        if (ret.error) {
+            printf("compress : failed with code %i\n", ret.error);
+            return ret.error;
+        }
+        printf("%s: %zu → %zu bytes, %.1f%%\n",
+            inpFilename,
+            (size_t)ret.size_in, (size_t)ret.size_out,  /* might overflow is size_t is 32 bits and size_{in,out} > 4 GB */
+            (double)ret.size_out / ret.size_in * 100);
+        printf("compress : done\n");
+    }
+
+    /* decompress */
+    {   FILE* const inpFp = fopen(lz4Filename, "rb");
+        FILE* const outFp = fopen(decFilename, "wb");
+
+        printf("decompress : %s -> %s\n", lz4Filename, decFilename);
+        int const ret = decompress_file(inpFp, outFp);
+
+        fclose(outFp);
+        fclose(inpFp);
+
+        if (ret) {
+            printf("decompress : failed with code %i\n", ret);
+            return ret;
+        }
+        printf("decompress : done\n");
+    }
+
+    /* verify */
+    {   FILE* const inpFp = fopen(inpFilename, "rb");
+        FILE* const decFp = fopen(decFilename, "rb");
+
+        printf("verify : %s <-> %s\n", inpFilename, decFilename);
+        int const cmp = compareFiles(inpFp, decFp);
+
+        fclose(decFp);
+        fclose(inpFp);
+
+        if (cmp) {
+            printf("corruption detected : decompressed file differs from original\n");
+            return cmp;
+        }
+        printf("verify : OK\n");
+    }
+
+    return 0;
+}

lz4.mod/lz4/examples/printVersion.c

@@ -0,0 +1,13 @@
+// LZ4 trivial example : print Library version number
+// by Takayuki Matsuoka
+
+
+#include <stdio.h>
+#include "lz4.h"
+
+int main(int argc, char** argv)
+{
+	(void)argc; (void)argv;
+    printf("Hello World ! LZ4 Library version = %d\n", LZ4_versionNumber());
+    return 0;
+}

lz4.mod/lz4/examples/simple_buffer.c

@@ -0,0 +1,99 @@
+/*
+ * simple_buffer.c
+ * Copyright  : Kyle Harper
+ * License    : Follows same licensing as the lz4.c/lz4.h program at any given time.  Currently, BSD 2.
+ * Description: Example program to demonstrate the basic usage of the compress/decompress functions within lz4.c/lz4.h.
+ *              The functions you'll likely want are LZ4_compress_default and LZ4_decompress_safe.
+ *              Both of these are documented in the lz4.h header file; I recommend reading them.
+ */
+
+/* Dependencies */
+#include <stdio.h>   // For printf()
+#include <string.h>  // For memcmp()
+#include <stdlib.h>  // For exit()
+#include "lz4.h"     // This is all that is required to expose the prototypes for basic compression and decompression.
+
+/*
+ * Simple show-error-and-bail function.
+ */
+void run_screaming(const char* message, const int code) {
+  printf("%s \n", message);
+  exit(code);
+}
+
+
+/*
+ * main
+ */
+int main(void) {
+  /* Introduction */
+  // Below we will have a Compression and Decompression section to demonstrate.
+  // There are a few important notes before we start:
+  //   1) The return codes of LZ4_ functions are important.
+  //      Read lz4.h if you're unsure what a given code means.
+  //   2) LZ4 uses char* pointers in all LZ4_ functions.
+  //      This is baked into the API and not going to change, for consistency.
+  //      If your program uses different pointer types,
+  //      you may need to do some casting or set the right -Wno compiler flags to ignore those warnings (e.g.: -Wno-pointer-sign).
+
+  /* Compression */
+  // We'll store some text into a variable pointed to by *src to be compressed later.
+  const char* const src = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Lorem ipsum dolor site amat.";
+  // The compression function needs to know how many bytes exist.  Since we're using a string, we can use strlen() + 1 (for \0).
+  const int src_size = (int)(strlen(src) + 1);
+  // LZ4 provides a function that will tell you the maximum size of compressed output based on input data via LZ4_compressBound().
+  const int max_dst_size = LZ4_compressBound(src_size);
+  // We will use that size for our destination boundary when allocating space.
+  char* compressed_data = (char*)malloc((size_t)max_dst_size);
+  if (compressed_data == NULL)
+    run_screaming("Failed to allocate memory for *compressed_data.", 1);
+  // That's all the information and preparation LZ4 needs to compress *src into *compressed_data.
+  // Invoke LZ4_compress_default now with our size values and pointers to our memory locations.
+  // Save the return value for error checking.
+  const int compressed_data_size = LZ4_compress_default(src, compressed_data, src_size, max_dst_size);
+  // Check return_value to determine what happened.
+  if (compressed_data_size <= 0)
+    run_screaming("A 0 or negative result from LZ4_compress_default() indicates a failure trying to compress the data. ", 1);
+  if (compressed_data_size > 0)
+    printf("We successfully compressed some data! Ratio: %.2f\n",
+        (float) compressed_data_size/src_size);
+  // Not only does a positive return_value mean success, the value returned == the number of bytes required.
+  // You can use this to realloc() *compress_data to free up memory, if desired.  We'll do so just to demonstrate the concept.
+  compressed_data = (char *)realloc(compressed_data, (size_t)compressed_data_size);
+  if (compressed_data == NULL)
+    run_screaming("Failed to re-alloc memory for compressed_data.  Sad :(", 1);
+
+
+  /* Decompression */
+  // Now that we've successfully compressed the information from *src to *compressed_data, let's do the opposite!
+  // The decompression will need to know the compressed size, and an upper bound of the decompressed size.
+  // In this example, we just re-use this information from previous section,
+  // but in a real-world scenario, metadata must be transmitted to the decompression side.
+  // Each implementation is in charge of this part. Oftentimes, it adds some header of its own.
+  // Sometimes, the metadata can be extracted from the local context.
+
+  // First, let's create a *new_src location of size src_size since we know that value.
+  char* const regen_buffer = (char*)malloc(src_size);
+  if (regen_buffer == NULL)
+    run_screaming("Failed to allocate memory for *regen_buffer.", 1);
+  // The LZ4_decompress_safe function needs to know where the compressed data is, how many bytes long it is,
+  // where the regen_buffer memory location is, and how large regen_buffer (uncompressed) output will be.
+  // Again, save the return_value.
+  const int decompressed_size = LZ4_decompress_safe(compressed_data, regen_buffer, compressed_data_size, src_size);
+  free(compressed_data);   /* no longer useful */
+  if (decompressed_size < 0)
+    run_screaming("A negative result from LZ4_decompress_safe indicates a failure trying to decompress the data.  See exit code (echo $?) for value returned.", decompressed_size);
+  if (decompressed_size >= 0)
+    printf("We successfully decompressed some data!\n");
+  // Not only does a positive return value mean success,
+  // value returned == number of bytes regenerated from compressed_data stream.
+  if (decompressed_size != src_size)
+    run_screaming("Decompressed data is different from original! \n", 1);
+
+  /* Validation */
+  // We should be able to compare our original *src with our *new_src and be byte-for-byte identical.
+  if (memcmp(src, regen_buffer, src_size) != 0)
+    run_screaming("Validation failed.  *src and *new_src are not identical.", 1);
+  printf("Validation done. The string we ended up with is:\n%s\n", regen_buffer);
+  return 0;
+}

lz4.mod/lz4/examples/streaming_api_basics.md

@@ -0,0 +1,87 @@
+# LZ4 Streaming API Basics
+by *Takayuki Matsuoka*
+## LZ4 API sets
+
+LZ4 has the following API sets :
+
+ - "Auto Framing" API (lz4frame.h) :
+   This is most recommended API for usual application.
+   It guarantees interoperability with other LZ4 framing format compliant tools/libraries
+   such as LZ4 command line utility, node-lz4, etc.
+ - "Block" API : This is recommended for simple purpose.
+   It compress single raw memory block to LZ4 memory block and vice versa.
+ - "Streaming" API : This is designed for complex things.
+   For example, compress huge stream data in restricted memory environment.
+
+Basically, you should use "Auto Framing" API.
+But if you want to write advanced application, it's time to use Block or Streaming APIs.
+
+
+## What is difference between Block and Streaming API ?
+
+Block API (de)compresses a single contiguous memory block.
+In other words, LZ4 library finds redundancy from a single contiguous memory block.
+Streaming API does same thing but (de)compresses multiple adjacent contiguous memory blocks.
+So LZ4 library could find more redundancy than Block API.
+
+The following figure shows difference between API and block sizes.
+In these figures, the original data is split into 4KiBytes contiguous chunks.
+
+```
+Original Data
+    +---------------+---------------+----+----+----+
+    | 4KiB Chunk A  | 4KiB Chunk B  | C  | D  |... |
+    +---------------+---------------+----+----+----+
+
+Example (1) : Block API, 4KiB Block
+    +---------------+---------------+----+----+----+
+    | 4KiB Chunk A  | 4KiB Chunk B  | C  | D  |... |
+    +---------------+---------------+----+----+----+
+    | Block #1      | Block #2      | #3 | #4 |... |
+    +---------------+---------------+----+----+----+
+
+                    (No Dependency)
+
+
+Example (2) : Block API, 8KiB Block
+    +---------------+---------------+----+----+----+
+    | 4KiB Chunk A  | 4KiB Chunk B  | C  | D  |... |
+    +---------------+---------------+----+----+----+
+    |            Block #1           |Block #2 |... |
+    +--------------------+----------+-------+-+----+
+          ^              |             ^    |
+          |              |             |    |
+          +--------------+             +----+
+          Internal Dependency          Internal Dependency
+
+
+Example (3) : Streaming API, 4KiB Block
+    +---------------+---------------+-----+----+----+
+    | 4KiB Chunk A  | 4KiB Chunk B  | C   | D  |... |
+    +---------------+---------------+-----+----+----+
+    | Block #1      | Block #2      | #3  | #4 |... |
+    +---------------+----+----------+-+---+-+--+----+
+          ^              |   ^        | ^   |
+          |              |   |        | |   |
+          +--------------+   +--------+ +---+
+          Dependency         Dependency Dependency
+```
+
+ - In example (1), there is no dependency.
+   All blocks are compressed independently.
+ - In example (2), naturally 8KiBytes block has internal dependency.
+   But still block #1 and #2 are compressed independently.
+ - In example (3), block #2 has dependency to #1,
+   also #3 has dependency to #2 and #1, #4 has #3, #2 and #1, and so on.
+
+Here, we can observe difference between example (2) and (3).
+In (2), there's no dependency between chunk B and C, but (3) has dependency between B and C.
+This dependency improves compression ratio.
+
+
+## Restriction of Streaming API
+
+For efficiency, Streaming API doesn't keep a mirror copy of dependent (de)compressed memory.
+This means users should keep these dependent (de)compressed memory explicitly.
+Usually, "Dependent memory" is previous adjacent contiguous memory up to 64KiBytes.
+LZ4 will not access further memories.

lz4.mod/lz4/lib/.gitignore

@@ -0,0 +1,2 @@
+# make install artefact
+liblz4.pc

lz4.mod/lz4/lib/LICENSE

@@ -0,0 +1,24 @@
+LZ4 Library
+Copyright (c) 2011-2020, Yann Collet
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice, this
+  list of conditions and the following disclaimer in the documentation and/or
+  other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

lz4.mod/lz4/lib/Makefile

@@ -0,0 +1,225 @@
+# ################################################################
+# LZ4 library - Makefile
+# Copyright (C) Yann Collet 2011-2020
+# All rights reserved.
+#
+# This Makefile is validated for Linux, macOS, *BSD, Hurd, Solaris, MSYS2 targets
+#
+# BSD license
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright notice, this
+#   list of conditions and the following disclaimer in the documentation and/or
+#   other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# You can contact the author at :
+#  - LZ4 source repository : https://github.com/lz4/lz4
+#  - LZ4 forum froup : https://groups.google.com/forum/#!forum/lz4c
+# ################################################################
+SED = sed
+
+# Version numbers
+LIBVER_MAJOR_SCRIPT:=`$(SED) -n '/define LZ4_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./lz4.h`
+LIBVER_MINOR_SCRIPT:=`$(SED) -n '/define LZ4_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./lz4.h`
+LIBVER_PATCH_SCRIPT:=`$(SED) -n '/define LZ4_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ./lz4.h`
+LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
+LIBVER_MAJOR := $(shell echo $(LIBVER_MAJOR_SCRIPT))
+LIBVER_MINOR := $(shell echo $(LIBVER_MINOR_SCRIPT))
+LIBVER_PATCH := $(shell echo $(LIBVER_PATCH_SCRIPT))
+LIBVER  := $(shell echo $(LIBVER_SCRIPT))
+
+BUILD_SHARED:=yes
+BUILD_STATIC:=yes
+
+CPPFLAGS+= -DXXH_NAMESPACE=LZ4_
+CPPFLAGS+= $(MOREFLAGS)
+CFLAGS  ?= -O3
+DEBUGFLAGS:= -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \
+             -Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes \
+             -Wundef -Wpointer-arith -Wstrict-aliasing=1
+CFLAGS  += $(DEBUGFLAGS)
+FLAGS    = $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
+
+SRCFILES := $(sort $(wildcard *.c))
+
+include ../Makefile.inc
+
+# OS X linker doesn't support -soname, and use different extension
+# see : https://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryDesignGuidelines.html
+ifeq ($(TARGET_OS), Darwin)
+	SHARED_EXT = dylib
+	SHARED_EXT_MAJOR = $(LIBVER_MAJOR).$(SHARED_EXT)
+	SHARED_EXT_VER = $(LIBVER).$(SHARED_EXT)
+	SONAME_FLAGS = -install_name $(libdir)/liblz4.$(SHARED_EXT_MAJOR) -compatibility_version $(LIBVER_MAJOR) -current_version $(LIBVER)
+else
+	SONAME_FLAGS = -Wl,-soname=liblz4.$(SHARED_EXT).$(LIBVER_MAJOR)
+	SHARED_EXT = so
+	SHARED_EXT_MAJOR = $(SHARED_EXT).$(LIBVER_MAJOR)
+	SHARED_EXT_VER = $(SHARED_EXT).$(LIBVER)
+endif
+
+.PHONY: default
+default: lib-release
+
+# silent mode by default; verbose can be triggered by V=1 or VERBOSE=1
+$(V)$(VERBOSE).SILENT:
+
+lib-release: DEBUGFLAGS :=
+lib-release: lib
+
+.PHONY: lib
+lib: liblz4.a liblz4
+
+.PHONY: all
+all: lib
+
+.PHONY: all32
+all32: CFLAGS+=-m32
+all32: all
+
+liblz4.a: $(SRCFILES)
+ifeq ($(BUILD_STATIC),yes)  # can be disabled on command line
+	@echo compiling static library
+	$(COMPILE.c) $^
+	$(AR) rcs $@ *.o
+endif
+
+ifeq ($(WINBASED),yes)
+liblz4-dll.rc: liblz4-dll.rc.in
+	@echo creating library resource
+	$(SED) -e 's|@LIBLZ4@|$(LIBLZ4)|' \
+         -e 's|@LIBVER_MAJOR@|$(LIBVER_MAJOR)|g' \
+         -e 's|@LIBVER_MINOR@|$(LIBVER_MINOR)|g' \
+         -e 's|@LIBVER_PATCH@|$(LIBVER_PATCH)|g' \
+          $< >$@
+
+liblz4-dll.o: liblz4-dll.rc
+	$(WINDRES) -i liblz4-dll.rc -o liblz4-dll.o
+
+$(LIBLZ4): $(SRCFILES) liblz4-dll.o
+	@echo compiling dynamic library $(LIBVER)
+	$(CC) $(FLAGS) -DLZ4_DLL_EXPORT=1 -shared $^ -o dll/[email protected] -Wl,--out-implib,dll/$(LIBLZ4_EXP)
+
+else   # not windows
+
+$(LIBLZ4): $(SRCFILES)
+	@echo compiling dynamic library $(LIBVER)
+	$(CC) $(FLAGS) -shared $^ -fPIC -fvisibility=hidden $(SONAME_FLAGS) -o $@
+	@echo creating versioned links
+	$(LN_SF) $@ liblz4.$(SHARED_EXT_MAJOR)
+	$(LN_SF) $@ liblz4.$(SHARED_EXT)
+
+endif
+
+.PHONY: liblz4
+liblz4: $(LIBLZ4)
+
+.PHONY: clean
+clean:
+ifeq ($(WINBASED),yes)
+	$(RM) *.rc
+endif
+	$(RM) core *.o liblz4.pc dll/$(LIBLZ4).dll dll/$(LIBLZ4_EXP)
+	$(RM) *.a *.$(SHARED_EXT) *.$(SHARED_EXT_MAJOR) *.$(SHARED_EXT_VER)
+	@echo Cleaning library completed
+
+#-----------------------------------------------------------------------------
+# make install is validated only for Linux, OSX, BSD, Hurd and Solaris targets
+#-----------------------------------------------------------------------------
+ifeq ($(POSIX_ENV),Yes)
+
+.PHONY: listL120
+listL120:  # extract lines >= 120 characters in *.{c,h}, by Takayuki Matsuoka (note : $$, for Makefile compatibility)
+	find . -type f -name '*.c' -o -name '*.h' | while read -r filename; do awk 'length > 120 {print FILENAME "(" FNR "): " $$0}' $$filename; done
+
+DESTDIR     ?=
+# directory variables : GNU conventions prefer lowercase
+# see https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html
+# support both lower and uppercase (BSD), use lower in script
+PREFIX      ?= /usr/local
+prefix      ?= $(PREFIX)
+EXEC_PREFIX ?= $(prefix)
+exec_prefix ?= $(EXEC_PREFIX)
+BINDIR      ?= $(exec_prefix)/bin
+bindir      ?= $(BINDIR)
+LIBDIR      ?= $(exec_prefix)/lib
+libdir      ?= $(LIBDIR)
+INCLUDEDIR  ?= $(prefix)/include
+includedir  ?= $(INCLUDEDIR)
+
+  ifneq (,$(filter $(TARGET_OS),OpenBSD FreeBSD NetBSD DragonFly MidnightBSD))
+PKGCONFIGDIR ?= $(prefix)/libdata/pkgconfig
+  else
+PKGCONFIGDIR ?= $(libdir)/pkgconfig
+  endif
+pkgconfigdir ?= $(PKGCONFIGDIR)
+
+liblz4.pc: liblz4.pc.in Makefile
+	@echo creating pkgconfig
+	$(SED) -e 's|@PREFIX@|$(prefix)|' \
+         -e 's|@LIBDIR@|$(libdir)|' \
+         -e 's|@INCLUDEDIR@|$(includedir)|' \
+         -e 's|@VERSION@|$(LIBVER)|' \
+         -e 's|=${prefix}/|=$${prefix}/|' \
+          $< >$@
+
+install: lib liblz4.pc
+	$(INSTALL_DIR) $(DESTDIR)$(pkgconfigdir)/ $(DESTDIR)$(includedir)/ $(DESTDIR)$(libdir)/ $(DESTDIR)$(bindir)/
+	$(INSTALL_DATA) liblz4.pc $(DESTDIR)$(pkgconfigdir)/
+	@echo Installing libraries in $(DESTDIR)$(libdir)
+  ifeq ($(BUILD_STATIC),yes)
+	$(INSTALL_DATA) liblz4.a $(DESTDIR)$(libdir)/liblz4.a
+	$(INSTALL_DATA) lz4frame_static.h $(DESTDIR)$(includedir)/lz4frame_static.h
+  endif
+  ifeq ($(BUILD_SHARED),yes)
+# Traditionally, one installs the DLLs in the bin directory as programs
+# search them first in their directory. This allows to not pollute system
+# directories (like c:/windows/system32), nor modify the PATH variable.
+    ifeq ($(WINBASED),yes)
+	$(INSTALL_PROGRAM) dll/$(LIBLZ4).dll $(DESTDIR)$(bindir)
+	$(INSTALL_PROGRAM) dll/$(LIBLZ4_EXP) $(DESTDIR)$(libdir)
+    else
+	$(INSTALL_PROGRAM) liblz4.$(SHARED_EXT_VER) $(DESTDIR)$(libdir)
+	$(LN_SF) liblz4.$(SHARED_EXT_VER) $(DESTDIR)$(libdir)/liblz4.$(SHARED_EXT_MAJOR)
+	$(LN_SF) liblz4.$(SHARED_EXT_VER) $(DESTDIR)$(libdir)/liblz4.$(SHARED_EXT)
+    endif
+  endif
+	@echo Installing headers in $(DESTDIR)$(includedir)
+	$(INSTALL_DATA) lz4.h $(DESTDIR)$(includedir)/lz4.h
+	$(INSTALL_DATA) lz4hc.h $(DESTDIR)$(includedir)/lz4hc.h
+	$(INSTALL_DATA) lz4frame.h $(DESTDIR)$(includedir)/lz4frame.h
+	@echo lz4 libraries installed
+
+uninstall:
+	$(RM) $(DESTDIR)$(pkgconfigdir)/liblz4.pc
+  ifeq (WINBASED,1)
+	$(RM) $(DESTDIR)$(bindir)/$(LIBLZ4).dll
+	$(RM) $(DESTDIR)$(libdir)/$(LIBLZ4_EXP)
+  else
+	$(RM) $(DESTDIR)$(libdir)/liblz4.$(SHARED_EXT)
+	$(RM) $(DESTDIR)$(libdir)/liblz4.$(SHARED_EXT_MAJOR)
+	$(RM) $(DESTDIR)$(libdir)/liblz4.$(SHARED_EXT_VER)
+  endif
+	$(RM) $(DESTDIR)$(libdir)/liblz4.a
+	$(RM) $(DESTDIR)$(includedir)/lz4.h
+	$(RM) $(DESTDIR)$(includedir)/lz4hc.h
+	$(RM) $(DESTDIR)$(includedir)/lz4frame.h
+	$(RM) $(DESTDIR)$(includedir)/lz4frame_static.h
+	@echo lz4 libraries successfully uninstalled
+
+endif

lz4.mod/lz4/lib/README.md

@@ -0,0 +1,137 @@
+LZ4 - Library Files
+================================
+
+The `/lib` directory contains many files, but depending on project's objectives,
+not all of them are necessary.
+
+#### Minimal LZ4 build
+
+The minimum required is **`lz4.c`** and **`lz4.h`**,
+which provides the fast compression and decompression algorithms.
+They generate and decode data using the [LZ4 block format].
+
+
+#### High Compression variant
+
+For more compression ratio at the cost of compression speed,
+the High Compression variant called **lz4hc** is available.
+Add files **`lz4hc.c`** and **`lz4hc.h`**.
+This variant also compresses data using the [LZ4 block format],
+and depends on regular `lib/lz4.*` source files.
+
+
+#### Frame support, for interoperability
+
+In order to produce compressed data compatible with `lz4` command line utility,
+it's necessary to use the [official interoperable frame format].
+This format is generated and decoded automatically by the **lz4frame** library.
+Its public API is described in `lib/lz4frame.h`.
+In order to work properly, lz4frame needs all other modules present in `/lib`,
+including, lz4 and lz4hc, and also **xxhash**.
+So it's necessary to include all `*.c` and `*.h` files present in `/lib`.
+
+
+#### Advanced / Experimental API
+
+Definitions which are not guaranteed to remain stable in future versions,
+are protected behind macros, such as `LZ4_STATIC_LINKING_ONLY`.
+As the name strongly implies, these definitions should only be invoked
+in the context of static linking ***only***.
+Otherwise, dependent application may fail on API or ABI break in the future.
+The associated symbols are also not exposed by the dynamic library by default.
+Should they be nonetheless needed, it's possible to force their publication
+by using build macros `LZ4_PUBLISH_STATIC_FUNCTIONS`
+and `LZ4F_PUBLISH_STATIC_FUNCTIONS`.
+
+
+#### Build macros
+
+The following build macro can be selected to adjust source code behavior at compilation time :
+
+- `LZ4_FAST_DEC_LOOP` : this triggers a speed optimized decompression loop, more powerful on modern cpus.
+  This loop works great on `x86`, `x64` and `aarch64` cpus, and is automatically enabled for them.
+  It's also possible to enable or disable it manually, by passing `LZ4_FAST_DEC_LOOP=1` or `0` to the preprocessor.
+  For example, with `gcc` : `-DLZ4_FAST_DEC_LOOP=1`,
+  and with `make` : `CPPFLAGS+=-DLZ4_FAST_DEC_LOOP=1 make lz4`.
+
+- `LZ4_DISTANCE_MAX` : control the maximum offset that the compressor will allow.
+  Set to 65535 by default, which is the maximum value supported by lz4 format.
+  Reducing maximum distance will reduce opportunities for LZ4 to find matches,
+  hence will produce a worse compression ratio.
+  However, a smaller max distance can allow compatibility with specific decoders using limited memory budget.
+  This build macro only influences the compressed output of the compressor.
+
+- `LZ4_DISABLE_DEPRECATE_WARNINGS` : invoking a deprecated function will make the compiler generate a warning.
+  This is meant to invite users to update their source code.
+  Should this be a problem, it's generally possible to make the compiler ignore these warnings,
+  for example with `-Wno-deprecated-declarations` on `gcc`,
+  or `_CRT_SECURE_NO_WARNINGS` for Visual Studio.
+  This build macro offers another project-specific method
+  by defining `LZ4_DISABLE_DEPRECATE_WARNINGS` before including the LZ4 header files.
+
+- `LZ4_USER_MEMORY_FUNCTIONS` : replace calls to <stdlib>'s `malloc`, `calloc` and `free`
+  by user-defined functions, which must be called `LZ4_malloc()`, `LZ4_calloc()` and `LZ4_free()`.
+  User functions must be available at link time.
+
+- `LZ4_FORCE_SW_BITCOUNT` : by default, the compression algorithm tries to determine lengths
+  by using bitcount instructions, generally implemented as fast single instructions in many cpus.
+  In case the target cpus doesn't support it, or compiler intrinsic doesn't work, or feature bad performance,
+  it's possible to use an optimized software path instead.
+  This is achieved by setting this build macros .
+  In most cases, it's not expected to be necessary,
+  but it can be legitimately considered for less common platforms.
+
+- `LZ4_ALIGN_TEST` : alignment test ensures that the memory area
+  passed as argument to become a compression state is suitably aligned.
+  This test can be disabled if it proves flaky, by setting this value to 0.
+
+
+#### Amalgamation
+
+lz4 source code can be amalgamated into a single file.
+One can combine all source code into `lz4_all.c` by using following command:
+```
+cat lz4.c lz4hc.c lz4frame.c > lz4_all.c
+```
+(`cat` file order is important) then compile `lz4_all.c`.
+All `*.h` files present in `/lib` remain necessary to compile `lz4_all.c`.
+
+
+#### Windows : using MinGW+MSYS to create DLL
+
+DLL can be created using MinGW+MSYS with the `make liblz4` command.
+This command creates `dll\liblz4.dll` and the import library `dll\liblz4.lib`.
+To override the `dlltool` command when cross-compiling on Linux, just set the `DLLTOOL` variable. Example of cross compilation on Linux with mingw-w64 64 bits:
+```
+make BUILD_STATIC=no CC=x86_64-w64-mingw32-gcc DLLTOOL=x86_64-w64-mingw32-dlltool OS=Windows_NT
+```
+The import library is only required with Visual C++.
+The header files `lz4.h`, `lz4hc.h`, `lz4frame.h` and the dynamic library
+`dll\liblz4.dll` are required to compile a project using gcc/MinGW.
+The dynamic library has to be added to linking options.
+It means that if a project that uses LZ4 consists of a single `test-dll.c`
+file it should be linked with `dll\liblz4.dll`. For example:
+```
+    $(CC) $(CFLAGS) -Iinclude/ test-dll.c -o test-dll dll\liblz4.dll
+```
+The compiled executable will require LZ4 DLL which is available at `dll\liblz4.dll`.
+
+
+#### Miscellaneous
+
+Other files present in the directory are not source code. They are :
+
+ - `LICENSE` : contains the BSD license text
+ - `Makefile` : `make` script to compile and install lz4 library (static and dynamic)
+ - `liblz4.pc.in` : for `pkg-config` (used in `make install`)
+ - `README.md` : this file
+
+[official interoperable frame format]: ../doc/lz4_Frame_format.md
+[LZ4 block format]: ../doc/lz4_Block_format.md
+
+
+#### License
+
+All source material within __lib__ directory are BSD 2-Clause licensed.
+See [LICENSE](LICENSE) for details.
+The license is also reminded at the top of each source file.

lz4.mod/lz4/lib/dll/example/Makefile

@@ -0,0 +1,63 @@
+# ##########################################################################
+# LZ4 programs - Makefile
+# Copyright (C) Yann Collet 2016-2020
+#
+# GPL v2 License
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# You can contact the author at :
+#  - LZ4 homepage : http://www.lz4.org
+#  - LZ4 source repository : https://github.com/lz4/lz4
+# ##########################################################################
+
+VOID    := /dev/null
+LZ4DIR  := ../include
+LIBDIR  := ../static
+DLLDIR  := ../dll
+
+CFLAGS  ?= -O3   # can select custom flags. For example : CFLAGS="-O2 -g" make
+CFLAGS  += -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow -Wswitch-enum \
+           -Wdeclaration-after-statement -Wstrict-prototypes \
+           -Wpointer-arith -Wstrict-aliasing=1
+CFLAGS  += $(MOREFLAGS)
+CPPFLAGS:= -I$(LZ4DIR) -DXXH_NAMESPACE=LZ4_
+FLAGS   := $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)
+
+
+# Define *.exe as extension for Windows systems
+ifneq (,$(filter Windows%,$(OS)))
+EXT =.exe
+else
+EXT =
+endif
+
+.PHONY: default fullbench-dll fullbench-lib
+
+
+default: all
+
+all: fullbench-dll fullbench-lib
+
+
+fullbench-lib: fullbench.c xxhash.c
+	$(CC) $(FLAGS) $^ -o $@$(EXT) $(LIBDIR)/liblz4_static.lib
+
+fullbench-dll: fullbench.c xxhash.c
+	$(CC) $(FLAGS) $^ -o $@$(EXT) -DLZ4_DLL_IMPORT=1 $(DLLDIR)/liblz4.dll
+
+clean:
+	@$(RM) fullbench-dll$(EXT) fullbench-lib$(EXT) \
+	@echo Cleaning completed

lz4.mod/lz4/lib/dll/example/README.md

@@ -0,0 +1,69 @@
+LZ4 Windows binary package
+====================================
+
+#### The package contents
+
+- `lz4.exe`                  : Command Line Utility, supporting gzip-like arguments
+- `dll\liblz4.dll`           : The DLL of LZ4 library
+- `dll\liblz4.lib`           : The import library of LZ4 library for Visual C++
+- `example\`                 : The example of usage of LZ4 library
+- `include\`                 : Header files required with LZ4 library
+- `static\liblz4_static.lib` : The static LZ4 library
+
+
+#### Usage of Command Line Interface
+
+Command Line Interface (CLI) supports gzip-like arguments.
+By default CLI takes an input file and compresses it to an output file:
+```
+    Usage: lz4 [arg] [input] [output]
+```
+The full list of commands for CLI can be obtained with `-h` or `-H`. The ratio can
+be improved with commands from `-3` to `-16` but higher levels also have slower
+compression. CLI includes in-memory compression benchmark module with compression
+levels starting from `-b` and ending with `-e` with iteration time of `-i` seconds.
+CLI supports aggregation of parameters i.e. `-b1`, `-e18`, and `-i1` can be joined
+into `-b1e18i1`.
+
+
+#### The example of usage of static and dynamic LZ4 libraries with gcc/MinGW
+
+Use `cd example` and `make` to build `fullbench-dll` and `fullbench-lib`.
+`fullbench-dll` uses a dynamic LZ4 library from the `dll` directory.
+`fullbench-lib` uses a static LZ4 library from the `lib` directory.
+
+
+#### Using LZ4 DLL with gcc/MinGW
+
+The header files from `include\` and the dynamic library `dll\liblz4.dll`
+are required to compile a project using gcc/MinGW.
+The dynamic library has to be added to linking options.
+It means that if a project that uses LZ4 consists of a single `test-dll.c`
+file it should be linked with `dll\liblz4.dll`. For example:
+```
+    gcc $(CFLAGS) -Iinclude\ test-dll.c -o test-dll dll\liblz4.dll
+```
+The compiled executable will require LZ4 DLL which is available at `dll\liblz4.dll`.
+
+
+#### The example of usage of static and dynamic LZ4 libraries with Visual C++
+
+Open `example\fullbench-dll.sln` to compile `fullbench-dll` that uses a
+dynamic LZ4 library from the `dll` directory. The solution works with Visual C++
+2010 or newer. When one will open the solution with Visual C++ newer than 2010
+then the solution will upgraded to the current version.
+
+
+#### Using LZ4 DLL with Visual C++
+
+The header files from `include\` and the import library `dll\liblz4.lib`
+are required to compile a project using Visual C++.
+
+1. The header files should be added to `Additional Include Directories` that can
+   be found in project properties `C/C++` then `General`.
+2. The import library has to be added to `Additional Dependencies` that can
+   be found in project properties `Linker` then `Input`.
+   If one will provide only the name `liblz4.lib` without a full path to the library
+   the directory has to be added to `Linker\General\Additional Library Directories`.
+
+The compiled executable will require LZ4 DLL which is available at `dll\liblz4.dll`.

lz4.mod/lz4/lib/dll/example/fullbench-dll.sln

@@ -0,0 +1,25 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Express 2012 for Windows Desktop
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fullbench-dll", "fullbench-dll.vcxproj", "{13992FD2-077E-4954-B065-A428198201A9}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{13992FD2-077E-4954-B065-A428198201A9}.Debug|Win32.ActiveCfg = Debug|Win32
+		{13992FD2-077E-4954-B065-A428198201A9}.Debug|Win32.Build.0 = Debug|Win32
+		{13992FD2-077E-4954-B065-A428198201A9}.Debug|x64.ActiveCfg = Debug|x64
+		{13992FD2-077E-4954-B065-A428198201A9}.Debug|x64.Build.0 = Debug|x64
+		{13992FD2-077E-4954-B065-A428198201A9}.Release|Win32.ActiveCfg = Release|Win32
+		{13992FD2-077E-4954-B065-A428198201A9}.Release|Win32.Build.0 = Release|Win32
+		{13992FD2-077E-4954-B065-A428198201A9}.Release|x64.ActiveCfg = Release|x64
+		{13992FD2-077E-4954-B065-A428198201A9}.Release|x64.Build.0 = Release|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

lz4.mod/lz4/lib/dll/example/fullbench-dll.vcxproj

@@ -0,0 +1,182 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
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