Update zip library to current head. Closes assimp/assimp#2388

contrib/zip/.gitignore

@@ -36,3 +36,21 @@
 # Temporary
 *.swp
 .DS_Store
+
+# CMake
+CMakeScripts
+*.cmake
+
+# Xcode
+*.build
+*.xcodeproj
+zip.sln
+zip.vcxproj.filters
+zip.vcxproj
+ALL_BUILD.vcxproj.filters
+ALL_BUILD.vcxproj
+CMakeFiles/
+zip.dir/
+test/test.exe.vcxproj.filters
+test/test.exe.vcxproj
+test/test.exe.dir/

contrib/zip/.travis.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# Build script for travis-ci.org builds.
+#
+if [ $ANALYZE = "true" ] && [ "$CC" = "clang" ]; then
+    # scan-build -h
+    scan-build cmake -G "Unix Makefiles"
+    scan-build -enable-checker security.FloatLoopCounter \
+        -enable-checker security.insecureAPI.UncheckedReturn \
+        --status-bugs -v \
+        make -j 8 \
+        make -j 8 test
+else
+    cmake -DCMAKE_BUILD_TYPE=Debug -DSANITIZE_ADDRESS=On -DCMAKE_INSTALL_PREFIX=_install
+    make -j 8
+    make install
+    ASAN_OPTIONS=detect_leaks=0 LSAN_OPTIONS=verbosity=1:log_threads=1 ctest -V
+fi

contrib/zip/.travis.yml

@@ -1,10 +1,22 @@
 language: c
+addons:
+  apt:
+    packages: &1
+    - lcov
 # Compiler selection
 compiler:
   - clang
   - gcc
+env:
+  - ANALYZE=false
+  - ANALYZE=true
 # Build steps
 script:
-  - mkdir build
-  - cd build
-  - cmake -DCMAKE_BUILD_TYPE=Debug .. && make && make test
+  - ./.travis.sh
+after_success:
+  # Creating report
+  - cmake -DENABLE_COVERAGE=ON
+  - make
+  - make test
+  # Uploading report to CodeCov
+  - bash <(curl -s https://codecov.io/bash)

contrib/zip/CMakeLists.txt

@@ -1,18 +1,47 @@
 cmake_minimum_required(VERSION 2.8)
 project(zip)
+enable_language(C)
+set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
 
 if (MSVC)
-    # Use secure functions by defaualt and suppress warnings about "deprecated" functions
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES=1")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES_COUNT=1")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_NONSTDC_NO_WARNINGS=1 /D _CRT_SECURE_NO_WARNINGS=1")
+  # Use secure functions by defaualt and suppress warnings about "deprecated" functions
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES=1")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_SECURE_CPP_OVERLOAD_STANDARD_NAMES_COUNT=1")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /D _CRT_NONSTDC_NO_WARNINGS=1 /D _CRT_SECURE_NO_WARNINGS=1")
+elseif ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR
+        "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR
+        "${CMAKE_C_COMPILER_ID}" STREQUAL "AppleClang")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -Wall -Wextra -Werror -pedantic")
 endif (MSVC)
 
 # zip
 set(SRC src/miniz.h src/zip.h src/zip.c)
-add_library(${CMAKE_PROJECT_NAME} ${SRC})
+add_library(${PROJECT_NAME} ${SRC})
+target_include_directories(${PROJECT_NAME} INTERFACE src)
 
 # test
-enable_testing()
-add_subdirectory(test)
+if (NOT CMAKE_DISABLE_TESTING)
+  enable_testing()
+  add_subdirectory(test)
+  find_package(Sanitizers)
+  add_sanitizers(${PROJECT_NAME} test.exe)
+  add_sanitizers(${PROJECT_NAME} test_miniz.exe)
+endif()
 
+install(TARGETS ${PROJECT_NAME}
+        RUNTIME DESTINATION bin
+        ARCHIVE DESTINATION lib
+        LIBRARY DESTINATION lib
+        COMPONENT library)
+install(FILES ${PROJECT_SOURCE_DIR}/src/zip.h DESTINATION include)
+
+# uninstall target (https://gitlab.kitware.com/cmake/community/wikis/FAQ#can-i-do-make-uninstall-with-cmake)
+if(NOT TARGET uninstall)
+    configure_file(
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
+        "${CMAKE_CURRENT_BINARY_DIR}/cmake/cmake_uninstall.cmake"
+        IMMEDIATE @ONLY)
+
+    add_custom_target(uninstall
+        COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake/cmake_uninstall.cmake)
+endif()

contrib/zip/README.md

@@ -1,12 +1,11 @@
 ### A portable (OSX/Linux/Windows), simple zip library written in C
 This is done by hacking awesome [miniz](https://code.google.com/p/miniz) library and layering functions on top of the miniz v1.15 API.
 
-[![Windows][win-badge]][win-link] [![OS X][osx-linux-badge]][osx-linux-link]
+[![Windows](https://ci.appveyor.com/api/projects/status/bph8dr3jacgmjv32/branch/master?svg=true&label=windows)](https://ci.appveyor.com/project/kuba--/zip)
+[![Linux](https://travis-ci.org/kuba--/zip.svg?branch=master&label=linux%2fosx)](https://travis-ci.org/kuba--/zip)
+[![Version](https://badge.fury.io/gh/kuba--%2Fzip.svg)](https://github.com/kuba--/zip/releases)
+[![Codecov](https://codecov.io/gh/kuba--/zip/branch/master/graph/badge.svg)](https://codecov.io/gh/kuba--/zip)
 
-[win-badge]: https://img.shields.io/appveyor/ci/kuba--/zip/master.svg?label=windows "AppVeyor build status"
-[win-link]:  https://ci.appveyor.com/project/kuba--/zip "AppVeyor build status"
-[osx-linux-badge]: https://img.shields.io/travis/kuba--/zip/master.svg?label=linux/osx "Travis CI build status"
-[osx-linux-link]:  https://travis-ci.org/kuba--/zip "Travis CI build status"
 
 # The Idea
 <img src="zip.png" name="zip" />
@@ -23,117 +22,288 @@ It was the reason, why I decided to write zip module on top of the miniz. It req
 
 * Create a new zip archive with default compression level.
 ```c
-    struct zip_t *zip = zip_open("foo.zip", ZIP_DEFAULT_COMPRESSION_LEVEL, 'w');
+struct zip_t *zip = zip_open("foo.zip", ZIP_DEFAULT_COMPRESSION_LEVEL, 'w');
+{
+    zip_entry_open(zip, "foo-1.txt");
     {
-        zip_entry_open(zip, "foo-1.txt");
-        {
-            char *buf = "Some data here...";
-            zip_entry_write(zip, buf, strlen(buf));
-        }
-        zip_entry_close(zip);
-
-        zip_entry_open(zip, "foo-2.txt");
-        {
-            // merge 3 files into one entry and compress them on-the-fly.
-            zip_entry_fwrite(zip, "foo-2.1.txt");
-            zip_entry_fwrite(zip, "foo-2.2.txt");
-            zip_entry_fwrite(zip, "foo-2.3.txt");
-        }
-        zip_entry_close(zip);
+        const char *buf = "Some data here...\0";
+        zip_entry_write(zip, buf, strlen(buf));
     }
-    zip_close(zip);
+    zip_entry_close(zip);
+
+    zip_entry_open(zip, "foo-2.txt");
+    {
+        // merge 3 files into one entry and compress them on-the-fly.
+        zip_entry_fwrite(zip, "foo-2.1.txt");
+        zip_entry_fwrite(zip, "foo-2.2.txt");
+        zip_entry_fwrite(zip, "foo-2.3.txt");
+    }
+    zip_entry_close(zip);
+}
+zip_close(zip);
 ```
 
 * Append to the existing zip archive.
 ```c
-    struct zip_t *zip = zip_open("foo.zip", ZIP_DEFAULT_COMPRESSION_LEVEL, 'a');
+struct zip_t *zip = zip_open("foo.zip", ZIP_DEFAULT_COMPRESSION_LEVEL, 'a');
+{
+    zip_entry_open(zip, "foo-3.txt");
     {
-        zip_entry_open(zip, "foo-3.txt");
-        {
-            char *buf = "Append some data here...";
-            zip_entry_write(zip, buf, strlen(buf));
-        }
-        zip_entry_close(zip);
+        const char *buf = "Append some data here...\0";
+        zip_entry_write(zip, buf, strlen(buf));
     }
-    zip_close(zip);
+    zip_entry_close(zip);
+}
+zip_close(zip);
 ```
 
 * Extract a zip archive into a folder.
 ```c
-    int on_extract_entry(const char *filename, void *arg) {
-        static int i = 0;
-        int n = *(int *)arg;
-        printf("Extracted: %s (%d of %d)\n", filename, ++i, n);
+int on_extract_entry(const char *filename, void *arg) {
+    static int i = 0;
+    int n = *(int *)arg;
+    printf("Extracted: %s (%d of %d)\n", filename, ++i, n);
 
-        return 0;
-    }
+    return 0;
+}
 
-    int arg = 2;
-    zip_extract("foo.zip", "/tmp", on_extract_entry, &arg);
+int arg = 2;
+zip_extract("foo.zip", "/tmp", on_extract_entry, &arg);
 ```
 
 * Extract a zip entry into memory.
 ```c
-    void *buf = NULL;
-    size_t bufsize;
+void *buf = NULL;
+size_t bufsize;
+
+struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+{
+    zip_entry_open(zip, "foo-1.txt");
+    {
+        zip_entry_read(zip, &buf, &bufsize);
+    }
+    zip_entry_close(zip);
+}
+zip_close(zip);
+
+free(buf);
+```
+
+* Extract a zip entry into memory (no internal allocation).
+```c
+unsigned char *buf;
+size_t bufsize;
 
-    struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+{
+    zip_entry_open(zip, "foo-1.txt");
     {
-        zip_entry_open(zip, "foo-1.txt");
-        {
-            zip_entry_read(zip, &buf, &bufsize);
-        }
-        zip_entry_close(zip);
+        bufsize = zip_entry_size(zip);
+        buf = calloc(sizeof(unsigned char), bufsize);
+
+        zip_entry_noallocread(zip, (void *)buf, bufsize);
     }
-    zip_close(zip);
+    zip_entry_close(zip);
+}
+zip_close(zip);
 
-    free(buf);
+free(buf);
 ```
 
 * Extract a zip entry into memory using callback.
 ```c
-    struct buffer_t {
-        char *data;
-        size_t size;
-    };
+struct buffer_t {
+    char *data;
+    size_t size;
+};
 
-    static size_t on_extract(void *arg, unsigned long long offset, const void *data, size_t size) {
-        struct buffer_t *buf = (struct buffer_t *)arg;
-        buf->data = realloc(buf->data, buf->size + size + 1);
-        assert(NULL != buf->data);
+static size_t on_extract(void *arg, unsigned long long offset, const void *data, size_t size) {
+    struct buffer_t *buf = (struct buffer_t *)arg;
+    buf->data = realloc(buf->data, buf->size + size + 1);
+    assert(NULL != buf->data);
 
-        memcpy(&(buf->data[buf->size]), data, size);
-        buf->size += size;
-        buf->data[buf->size] = 0;
+    memcpy(&(buf->data[buf->size]), data, size);
+    buf->size += size;
+    buf->data[buf->size] = 0;
 
-        return size;
-    }
+    return size;
+}
 
-    struct buffer_t buf = {0};
-    struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+struct buffer_t buf = {0};
+struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+{
+    zip_entry_open(zip, "foo-1.txt");
     {
-        zip_entry_open(zip, "foo-1.txt");
-        {
-            zip_entry_extract(zip, on_extract, &buf);
-        }
-        zip_entry_close(zip);
+        zip_entry_extract(zip, on_extract, &buf);
     }
-    zip_close(zip);
+    zip_entry_close(zip);
+}
+zip_close(zip);
 
-    free(buf.data);
+free(buf.data);
 ```
 
 
 * Extract a zip entry into a file.
 ```c
-    struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+{
+    zip_entry_open(zip, "foo-2.txt");
+    {
+        zip_entry_fread(zip, "foo-2.txt");
+    }
+    zip_entry_close(zip);
+}
+zip_close(zip);
+```
+
+* List of all zip entries
+```c
+struct zip_t *zip = zip_open("foo.zip", 0, 'r');
+int i, n = zip_total_entries(zip);
+for (i = 0; i < n; ++i) {
+    zip_entry_openbyindex(zip, i);
     {
-        zip_entry_open(zip, "foo-2.txt");
-        {
-            zip_entry_fread(zip, "foo-2.txt");
-        }
-        zip_entry_close(zip);
+        const char *name = zip_entry_name(zip);
+        int isdir = zip_entry_isdir(zip);
+        unsigned long long size = zip_entry_size(zip);
+        unsigned int crc32 = zip_entry_crc32(zip);
+    }
+    zip_entry_close(zip);
+}
+zip_close(zip);
+```
+
+# Bindings
+Compile zip library as a dynamic library.
+```shell
+$ mkdir build
+$ cd build
+$ cmake -DBUILD_SHARED_LIBS=true ..
+$ make
+```
+
+### Go (cgo)
+```go
+package main
+
+/*
+#cgo CFLAGS: -I../src
+#cgo LDFLAGS: -L. -lzip
+#include <zip.h>
+*/
+import "C"
+import "unsafe"
+
+func main() {
+	path := C.CString("/tmp/go.zip")
+	zip := C.zip_open(path, 6, 'w')
+
+	entryname := C.CString("test")
+	C.zip_entry_open(zip, entryname)
+
+	content := "test content"
+	buf := unsafe.Pointer(C.CString(content))
+	bufsize := C.size_t(len(content))
+	C.zip_entry_write(zip, buf, bufsize)
+
+	C.zip_entry_close(zip)
+
+	C.zip_close(zip)
+}
+```
+
+### Ruby (ffi)
+Install _ffi_ gem.
+```shell
+$ gem install ffi
+```
+
+Bind in your module.
+```ruby
+require 'ffi'
+
+module Zip
+  extend FFI::Library
+  ffi_lib "./libzip.#{::FFI::Platform::LIBSUFFIX}"
+
+  attach_function :zip_open, [:string, :int, :char], :pointer
+  attach_function :zip_close, [:pointer], :void
+
+  attach_function :zip_entry_open, [:pointer, :string], :int
+  attach_function :zip_entry_close, [:pointer], :void
+  attach_function :zip_entry_write, [:pointer, :string, :int], :int
+end
+
+ptr = Zip.zip_open("/tmp/ruby.zip", 6, "w".bytes()[0])
+
+status = Zip.zip_entry_open(ptr, "test")
+
+content = "test content"
+status = Zip.zip_entry_write(ptr, content, content.size())
+
+Zip.zip_entry_close(ptr)
+Zip.zip_close(ptr)
+```
+
+### Python (cffi)
+Install _cffi_ package
+```shell
+$ pip install cffi
+```
+
+Bind in your package.
+```python
+import ctypes.util
+from cffi import FFI
+
+ffi = FFI()
+ffi.cdef("""
+    struct zip_t *zip_open(const char *zipname, int level, char mode);
+    void zip_close(struct zip_t *zip);
+
+    int zip_entry_open(struct zip_t *zip, const char *entryname);
+    int zip_entry_close(struct zip_t *zip);
+    int zip_entry_write(struct zip_t *zip, const void *buf, size_t bufsize);
+""")
+
+Zip = ffi.dlopen(ctypes.util.find_library("zip"))
+
+ptr = Zip.zip_open("/tmp/python.zip", 6, 'w')
+
+status = Zip.zip_entry_open(ptr, "test")
+
+content = "test content"
+status = Zip.zip_entry_write(ptr, content, len(content))
+
+Zip.zip_entry_close(ptr)
+Zip.zip_close(ptr)
+```
+
+### Ring
+The language comes with RingZip based on this library
+```ring
+load "ziplib.ring"
+
+new Zip {
+    setFileName("myfile.zip")
+    open("w")
+    newEntry() {
+        open("test.c")
+        writefile("test.c")
+        close()
     }
-    zip_close(zip);
+    close()
+}
+```
+
+# Contribution Rules/Coding Standards
+No need to throw away your coding style, just do your best to follow default clang-format style.
+Apply `clang-format` to the source files before commit:
+```sh
+for file in $(git ls-files | \grep -E '\.(c|h)$' | \grep -v -- '#')
+do
+    clang-format -i $file
+done
 ```
 

contrib/zip/appveyor.yml

@@ -1,4 +1,4 @@
-version: 1.0.{build}
+version: zip-0.1.9.{build}
 build_script:
 - cmd: >-
     cd c:\projects\zip

contrib/zip/cmake/asan-wrapper

@@ -0,0 +1,55 @@
+#!/bin/sh
+
+# The MIT License (MIT)
+#
+# Copyright (c)
+#   2013 Matthew Arsenault
+#   2015-2016 RWTH Aachen University, Federal Republic of Germany
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# This script is a wrapper for AddressSanitizer. In some special cases you need
+# to preload AddressSanitizer to avoid error messages - e.g. if you're
+# preloading another library to your application. At the moment this script will
+# only do something, if we're running on a Linux platform. OSX might not be
+# affected.
+
+
+# Exit immediately, if platform is not Linux.
+if [ "$(uname)" != "Linux" ]
+then
+    exec $@
+fi
+
+
+# Get the used libasan of the application ($1). If a libasan was found, it will
+# be prepended to LD_PRELOAD.
+libasan=$(ldd $1 | grep libasan | sed "s/^[[:space:]]//" | cut -d' ' -f1)
+if [ -n "$libasan" ]
+then
+    if [ -n "$LD_PRELOAD" ]
+    then
+        export LD_PRELOAD="$libasan:$LD_PRELOAD"
+    else
+        export LD_PRELOAD="$libasan"
+    fi
+fi
+
+# Execute the application.
+exec $@

contrib/zip/cmake/cmake_uninstall.cmake.in

@@ -0,0 +1,23 @@
+# copied from https://gitlab.kitware.com/cmake/community/wikis/FAQ#can-i-do-make-uninstall-with-cmake
+if(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
+  message(FATAL_ERROR "Cannot find install manifest: @CMAKE_BINARY_DIR@/install_manifest.txt")
+endif(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
+
+file(READ "@CMAKE_BINARY_DIR@/install_manifest.txt" files)
+string(REGEX REPLACE "\n" ";" files "${files}")
+foreach(file ${files})
+  message(STATUS "Uninstalling $ENV{DESTDIR}${file}")
+  if(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+    exec_program(
+      "@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
+      OUTPUT_VARIABLE rm_out
+      RETURN_VALUE rm_retval
+      )
+    if(NOT "${rm_retval}" STREQUAL 0)
+      message(FATAL_ERROR "Problem when removing $ENV{DESTDIR}${file}")
+    endif(NOT "${rm_retval}" STREQUAL 0)
+  else(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+    message(STATUS "File $ENV{DESTDIR}${file} does not exist.")
+  endif(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+endforeach(file)
+

contrib/zip/src/zip.c

@@ -7,29 +7,40 @@
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  */
-
-#include "zip.h"
-#include "miniz.h"
+#define __STDC_WANT_LIB_EXT1__ 1
 
 #include <errno.h>
 #include <sys/stat.h>
 #include <time.h>
 
-#if defined _WIN32 || defined __WIN32__
-/* Win32, DOS */
+#if defined(_WIN32) || defined(__WIN32__) || defined(_MSC_VER) ||              \
+    defined(__MINGW32__)
+/* Win32, DOS, MSVC, MSVS */
 #include <direct.h>
 
 #define MKDIR(DIRNAME) _mkdir(DIRNAME)
 #define STRCLONE(STR) ((STR) ? _strdup(STR) : NULL)
 #define HAS_DEVICE(P)                                                          \
-    ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) && \
-     (P)[1] == ':')
+  ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) &&   \
+   (P)[1] == ':')
 #define FILESYSTEM_PREFIX_LEN(P) (HAS_DEVICE(P) ? 2 : 0)
 #define ISSLASH(C) ((C) == '/' || (C) == '\\')
 
 #else
+
+#include <unistd.h> // needed for symlink() on BSD
+int symlink(const char *target, const char *linkpath); // needed on Linux
+
 #define MKDIR(DIRNAME) mkdir(DIRNAME, 0755)
 #define STRCLONE(STR) ((STR) ? strdup(STR) : NULL)
+
+#endif
+
+#include "miniz.h"
+#include "zip.h"
+
+#ifndef HAS_DEVICE
+#define HAS_DEVICE(P) 0
 #endif
 
 #ifndef FILESYSTEM_PREFIX_LEN
@@ -40,601 +51,871 @@
 #define ISSLASH(C) ((C) == '/')
 #endif
 
-#define CLEANUP(ptr)           \
-    do {                       \
-        if (ptr) {             \
-            free((void *)ptr); \
-            ptr = NULL;        \
-        }                      \
-    } while (0)
-
-static char *basename(const char *name) {
-    char const *p;
-    char const *base = name += FILESYSTEM_PREFIX_LEN(name);
-    int all_slashes = 1;
-
-    for (p = name; *p; p++) {
-        if (ISSLASH(*p))
-            base = p + 1;
-        else
-            all_slashes = 0;
-    }
-
-    /* If NAME is all slashes, arrange to return `/'. */
-    if (*base == '\0' && ISSLASH(*name) && all_slashes) --base;
-
-    return (char *)base;
+#define CLEANUP(ptr)                                                           \
+  do {                                                                         \
+    if (ptr) {                                                                 \
+      free((void *)ptr);                                                       \
+      ptr = NULL;                                                              \
+    }                                                                          \
+  } while (0)
+
+static const char *base_name(const char *name) {
+  char const *p;
+  char const *base = name += FILESYSTEM_PREFIX_LEN(name);
+  int all_slashes = 1;
+
+  for (p = name; *p; p++) {
+    if (ISSLASH(*p))
+      base = p + 1;
+    else
+      all_slashes = 0;
+  }
+
+  /* If NAME is all slashes, arrange to return `/'. */
+  if (*base == '\0' && ISSLASH(*name) && all_slashes)
+    --base;
+
+  return base;
 }
 
 static int mkpath(const char *path) {
-    char const *p;
-    char npath[MAX_PATH + 1] = {0};
-    int len = 0;
-
-    for (p = path; *p && len < MAX_PATH; p++) {
-        if (ISSLASH(*p) && len > 0) {
-            if (MKDIR(npath) == -1)
-                if (errno != EEXIST) return -1;
-        }
-        npath[len++] = *p;
-    }
-
-    return 0;
+  char const *p;
+  char npath[MAX_PATH + 1];
+  int len = 0;
+  int has_device = HAS_DEVICE(path);
+
+  memset(npath, 0, MAX_PATH + 1);
+  if (has_device) {
+    // only on windows
+    npath[0] = path[0];
+    npath[1] = path[1];
+    len = 2;
+  }
+  for (p = path + len; *p && len < MAX_PATH; p++) {
+    if (ISSLASH(*p) && ((!has_device && len > 0) || (has_device && len > 2))) {
+      if (MKDIR(npath) == -1)
+        if (errno != EEXIST)
+          return -1;
+    }
+    npath[len++] = *p;
+  }
+
+  return 0;
 }
 
-static char *strrpl(const char *str, char oldchar, char newchar) {
-    char *rpl = (char *)malloc(sizeof(char) * (1 + strlen(str)));
-    char *begin = rpl;
-    char c;
-    while((c = *str++)) {
-        if (c == oldchar) {
-            c = newchar;
-        }
-        *rpl++ = c;
+static char *strrpl(const char *str, size_t n, char oldchar, char newchar) {
+  char c;
+  size_t i;
+  char *rpl = (char *)calloc((1 + n), sizeof(char));
+  char *begin = rpl;
+  if (!rpl) {
+    return NULL;
+  }
+
+  for (i = 0; (i < n) && (c = *str++); ++i) {
+    if (c == oldchar) {
+      c = newchar;
     }
-    *rpl = '\0';
+    *rpl++ = c;
+  }
 
-    return begin;
+  return begin;
 }
 
 struct zip_entry_t {
-    int index;
-    const char *name;
-    mz_uint64 uncomp_size;
-    mz_uint64 comp_size;
-    mz_uint32 uncomp_crc32;
-    mz_uint64 offset;
-    mz_uint8 header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE];
-    mz_uint64 header_offset;
-    mz_uint16 method;
-    mz_zip_writer_add_state state;
-    tdefl_compressor comp;
+  int index;
+  char *name;
+  mz_uint64 uncomp_size;
+  mz_uint64 comp_size;
+  mz_uint32 uncomp_crc32;
+  mz_uint64 offset;
+  mz_uint8 header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE];
+  mz_uint64 header_offset;
+  mz_uint16 method;
+  mz_zip_writer_add_state state;
+  tdefl_compressor comp;
+  mz_uint32 external_attr;
+  time_t m_time;
 };
 
 struct zip_t {
-    mz_zip_archive archive;
-    mz_uint level;
-    struct zip_entry_t entry;
-    char mode;
+  mz_zip_archive archive;
+  mz_uint level;
+  struct zip_entry_t entry;
 };
 
 struct zip_t *zip_open(const char *zipname, int level, char mode) {
-    struct zip_t *zip = NULL;
-
-    if (!zipname || strlen(zipname) < 1) {
-        // zip_t archive name is empty or NULL
-        goto cleanup;
+  struct zip_t *zip = NULL;
+
+  if (!zipname || strlen(zipname) < 1) {
+    // zip_t archive name is empty or NULL
+    goto cleanup;
+  }
+
+  if (level < 0)
+    level = MZ_DEFAULT_LEVEL;
+  if ((level & 0xF) > MZ_UBER_COMPRESSION) {
+    // Wrong compression level
+    goto cleanup;
+  }
+
+  zip = (struct zip_t *)calloc((size_t)1, sizeof(struct zip_t));
+  if (!zip)
+    goto cleanup;
+
+  zip->level = (mz_uint)level;
+  switch (mode) {
+  case 'w':
+    // Create a new archive.
+    if (!mz_zip_writer_init_file(&(zip->archive), zipname, 0)) {
+      // Cannot initialize zip_archive writer
+      goto cleanup;
     }
+    break;
 
-    if (level < 0) level = MZ_DEFAULT_LEVEL;
-    if ((level & 0xF) > MZ_UBER_COMPRESSION) {
-        // Wrong compression level
-        goto cleanup;
+  case 'r':
+  case 'a':
+    if (!mz_zip_reader_init_file(
+            &(zip->archive), zipname,
+            zip->level | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY)) {
+      // An archive file does not exist or cannot initialize
+      // zip_archive reader
+      goto cleanup;
     }
-
-    zip = (struct zip_t *)calloc((size_t)1, sizeof(struct zip_t));
-    if (!zip) goto cleanup;
-
-    zip->level = level;
-    zip->mode = mode;
-    switch (mode) {
-        case 'w':
-            // Create a new archive.
-            if (!mz_zip_writer_init_file(&(zip->archive), zipname, 0)) {
-                // Cannot initialize zip_archive writer
-                goto cleanup;
-            }
-            break;
-
-        case 'r':
-        case 'a':
-            if (!mz_zip_reader_init_file(
-                    &(zip->archive), zipname,
-                    level | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY)) {
-                // An archive file does not exist or cannot initialize
-                // zip_archive reader
-                goto cleanup;
-            }
-
-            if (mode == 'a' &&
-                !mz_zip_writer_init_from_reader(&(zip->archive), zipname)) {
-                mz_zip_reader_end(&(zip->archive));
-                goto cleanup;
-            }
-
-            break;
-
-        default:
-            goto cleanup;
+    if (mode == 'a' &&
+        !mz_zip_writer_init_from_reader(&(zip->archive), zipname)) {
+      mz_zip_reader_end(&(zip->archive));
+      goto cleanup;
     }
+    break;
+
+  default:
+    goto cleanup;
+  }
 
-    return zip;
+  return zip;
 
 cleanup:
-    CLEANUP(zip);
-    return NULL;
+  CLEANUP(zip);
+  return NULL;
 }
 
 void zip_close(struct zip_t *zip) {
-    if (zip) {
-        // Always finalize, even if adding failed for some reason, so we have a
-        // valid central directory.
-        mz_zip_writer_finalize_archive(&(zip->archive));
+  if (zip) {
+    // Always finalize, even if adding failed for some reason, so we have a
+    // valid central directory.
+    mz_zip_writer_finalize_archive(&(zip->archive));
 
-        mz_zip_writer_end(&(zip->archive));
-        mz_zip_reader_end(&(zip->archive));
+    mz_zip_writer_end(&(zip->archive));
+    mz_zip_reader_end(&(zip->archive));
 
-        CLEANUP(zip);
-    }
+    CLEANUP(zip);
+  }
 }
 
 int zip_entry_open(struct zip_t *zip, const char *entryname) {
-    char *locname = NULL;
-    size_t entrylen = 0;
-    mz_zip_archive *pzip = NULL;
-    mz_uint num_alignment_padding_bytes, level;
-
-    if (!zip || !entryname) {
-        return -1;
-    }
-
-    entrylen = strlen(entryname);
-    if (entrylen < 1) {
-        return -1;
-    }
-
-    pzip = &(zip->archive);
-    /*
-      .ZIP File Format Specification Version: 6.3.3
-
-      4.4.17.1 The name of the file, with optional relative path.
-      The path stored MUST not contain a drive or
-      device letter, or a leading slash.  All slashes
-      MUST be forward slashes '/' as opposed to
-      backwards slashes '\' for compatibility with Amiga
-      and UNIX file systems etc.  If input came from standard
-      input, there is no file name field.
-    */
-    locname = strrpl(entryname, '\\', '/');
-
-    if (zip->mode == 'r') {
-        zip->entry.index = mz_zip_reader_locate_file(pzip, locname, NULL, 0);
-        CLEANUP(locname);
-        return (zip->entry.index < 0) ? -1 : 0;
-    }
-
-    zip->entry.index = zip->archive.m_total_files;
-    zip->entry.name = locname;
-    if (!zip->entry.name) {
-        // Cannot parse zip entry name
-        return -1;
-    }
+  size_t entrylen = 0;
+  mz_zip_archive *pzip = NULL;
+  mz_uint num_alignment_padding_bytes, level;
+  mz_zip_archive_file_stat stats;
+
+  if (!zip || !entryname) {
+    return -1;
+  }
+
+  entrylen = strlen(entryname);
+  if (entrylen < 1) {
+    return -1;
+  }
+
+  /*
+    .ZIP File Format Specification Version: 6.3.3
+
+    4.4.17.1 The name of the file, with optional relative path.
+    The path stored MUST not contain a drive or
+    device letter, or a leading slash.  All slashes
+    MUST be forward slashes '/' as opposed to
+    backwards slashes '\' for compatibility with Amiga
+    and UNIX file systems etc.  If input came from standard
+    input, there is no file name field.
+  */
+  zip->entry.name = strrpl(entryname, entrylen, '\\', '/');
+  if (!zip->entry.name) {
+    // Cannot parse zip entry name
+    return -1;
+  }
+
+  pzip = &(zip->archive);
+  if (pzip->m_zip_mode == MZ_ZIP_MODE_READING) {
+    zip->entry.index =
+        mz_zip_reader_locate_file(pzip, zip->entry.name, NULL, 0);
+    if (zip->entry.index < 0) {
+      goto cleanup;
+    }
+
+    if (!mz_zip_reader_file_stat(pzip, (mz_uint)zip->entry.index, &stats)) {
+      goto cleanup;
+    }
+
+    zip->entry.comp_size = stats.m_comp_size;
+    zip->entry.uncomp_size = stats.m_uncomp_size;
+    zip->entry.uncomp_crc32 = stats.m_crc32;
+    zip->entry.offset = stats.m_central_dir_ofs;
+    zip->entry.header_offset = stats.m_local_header_ofs;
+    zip->entry.method = stats.m_method;
+    zip->entry.external_attr = stats.m_external_attr;
+    zip->entry.m_time = stats.m_time;
 
-    zip->entry.comp_size = 0;
-    zip->entry.uncomp_size = 0;
-    zip->entry.uncomp_crc32 = MZ_CRC32_INIT;
-    zip->entry.offset = zip->archive.m_archive_size;
-    zip->entry.header_offset = zip->archive.m_archive_size;
-    memset(zip->entry.header, 0,
-           MZ_ZIP_LOCAL_DIR_HEADER_SIZE * sizeof(mz_uint8));
-    zip->entry.method = 0;
-
-    num_alignment_padding_bytes =
-        mz_zip_writer_compute_padding_needed_for_file_alignment(pzip);
-
-    if (!pzip->m_pState || (pzip->m_zip_mode != MZ_ZIP_MODE_WRITING)) {
-        // Wrong zip mode
-        return -1;
-    }
-    if (zip->level & MZ_ZIP_FLAG_COMPRESSED_DATA) {
-        // Wrong zip compression level
-        return -1;
-    }
-    // no zip64 support yet
-    if ((pzip->m_total_files == 0xFFFF) ||
-        ((pzip->m_archive_size + num_alignment_padding_bytes +
-          MZ_ZIP_LOCAL_DIR_HEADER_SIZE + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE +
-          entrylen) > 0xFFFFFFFF)) {
-        // No zip64 support yet
-        return -1;
-    }
-    if (!mz_zip_writer_write_zeros(
-            pzip, zip->entry.offset,
-            num_alignment_padding_bytes + sizeof(zip->entry.header))) {
-        // Cannot memset zip entry header
-        return -1;
-    }
+    return 0;
+  }
+
+  zip->entry.index = (int)zip->archive.m_total_files;
+  zip->entry.comp_size = 0;
+  zip->entry.uncomp_size = 0;
+  zip->entry.uncomp_crc32 = MZ_CRC32_INIT;
+  zip->entry.offset = zip->archive.m_archive_size;
+  zip->entry.header_offset = zip->archive.m_archive_size;
+  memset(zip->entry.header, 0, MZ_ZIP_LOCAL_DIR_HEADER_SIZE * sizeof(mz_uint8));
+  zip->entry.method = 0;
+  zip->entry.external_attr = 0;
+
+  num_alignment_padding_bytes =
+      mz_zip_writer_compute_padding_needed_for_file_alignment(pzip);
+
+  if (!pzip->m_pState || (pzip->m_zip_mode != MZ_ZIP_MODE_WRITING)) {
+    // Wrong zip mode
+    goto cleanup;
+  }
+  if (zip->level & MZ_ZIP_FLAG_COMPRESSED_DATA) {
+    // Wrong zip compression level
+    goto cleanup;
+  }
+  // no zip64 support yet
+  if ((pzip->m_total_files == 0xFFFF) ||
+      ((pzip->m_archive_size + num_alignment_padding_bytes +
+        MZ_ZIP_LOCAL_DIR_HEADER_SIZE + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE +
+        entrylen) > 0xFFFFFFFF)) {
+    // No zip64 support yet
+    goto cleanup;
+  }
+  if (!mz_zip_writer_write_zeros(pzip, zip->entry.offset,
+                                 num_alignment_padding_bytes +
+                                     sizeof(zip->entry.header))) {
+    // Cannot memset zip entry header
+    goto cleanup;
+  }
+
+  zip->entry.header_offset += num_alignment_padding_bytes;
+  if (pzip->m_file_offset_alignment) {
+    MZ_ASSERT(
+        (zip->entry.header_offset & (pzip->m_file_offset_alignment - 1)) == 0);
+  }
+  zip->entry.offset += num_alignment_padding_bytes + sizeof(zip->entry.header);
+
+  if (pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, zip->entry.name,
+                     entrylen) != entrylen) {
+    // Cannot write data to zip entry
+    goto cleanup;
+  }
+
+  zip->entry.offset += entrylen;
+  level = zip->level & 0xF;
+  if (level) {
+    zip->entry.state.m_pZip = pzip;
+    zip->entry.state.m_cur_archive_file_ofs = zip->entry.offset;
+    zip->entry.state.m_comp_size = 0;
+
+    if (tdefl_init(&(zip->entry.comp), mz_zip_writer_add_put_buf_callback,
+                   &(zip->entry.state),
+                   (int)tdefl_create_comp_flags_from_zip_params(
+                       (int)level, -15, MZ_DEFAULT_STRATEGY)) !=
+        TDEFL_STATUS_OKAY) {
+      // Cannot initialize the zip compressor
+      goto cleanup;
+    }
+  }
+
+  zip->entry.m_time = time(NULL);
+
+  return 0;
 
-    zip->entry.header_offset += num_alignment_padding_bytes;
-    if (pzip->m_file_offset_alignment) {
-        MZ_ASSERT((zip->entry.header_offset &
-                   (pzip->m_file_offset_alignment - 1)) == 0);
-    }
-    zip->entry.offset +=
-        num_alignment_padding_bytes + sizeof(zip->entry.header);
+cleanup:
+  CLEANUP(zip->entry.name);
+  return -1;
+}
 
-    if (pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, zip->entry.name,
-                       entrylen) != entrylen) {
-        // Cannot write data to zip entry
-        return -1;
-    }
+int zip_entry_openbyindex(struct zip_t *zip, int index) {
+  mz_zip_archive *pZip = NULL;
+  mz_zip_archive_file_stat stats;
+  mz_uint namelen;
+  const mz_uint8 *pHeader;
+  const char *pFilename;
+
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
+
+  pZip = &(zip->archive);
+  if (pZip->m_zip_mode != MZ_ZIP_MODE_READING) {
+    // open by index requires readonly mode
+    return -1;
+  }
+
+  if (index < 0 || (mz_uint)index >= pZip->m_total_files) {
+    // index out of range
+    return -1;
+  }
+
+  if (!(pHeader = &MZ_ZIP_ARRAY_ELEMENT(
+            &pZip->m_pState->m_central_dir, mz_uint8,
+            MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets,
+                                 mz_uint32, index)))) {
+    // cannot find header in central directory
+    return -1;
+  }
+
+  namelen = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_FILENAME_LEN_OFS);
+  pFilename = (const char *)pHeader + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE;
+
+  /*
+    .ZIP File Format Specification Version: 6.3.3
+
+    4.4.17.1 The name of the file, with optional relative path.
+    The path stored MUST not contain a drive or
+    device letter, or a leading slash.  All slashes
+    MUST be forward slashes '/' as opposed to
+    backwards slashes '\' for compatibility with Amiga
+    and UNIX file systems etc.  If input came from standard
+    input, there is no file name field.
+  */
+  zip->entry.name = strrpl(pFilename, namelen, '\\', '/');
+  if (!zip->entry.name) {
+    // local entry name is NULL
+    return -1;
+  }
+
+  if (!mz_zip_reader_file_stat(pZip, (mz_uint)index, &stats)) {
+    return -1;
+  }
+
+  zip->entry.index = index;
+  zip->entry.comp_size = stats.m_comp_size;
+  zip->entry.uncomp_size = stats.m_uncomp_size;
+  zip->entry.uncomp_crc32 = stats.m_crc32;
+  zip->entry.offset = stats.m_central_dir_ofs;
+  zip->entry.header_offset = stats.m_local_header_ofs;
+  zip->entry.method = stats.m_method;
+  zip->entry.external_attr = stats.m_external_attr;
+  zip->entry.m_time = stats.m_time;
+
+  return 0;
+}
 
-    zip->entry.offset += entrylen;
-    level = zip->level & 0xF;
-    if (level) {
-        zip->entry.state.m_pZip = pzip;
-        zip->entry.state.m_cur_archive_file_ofs = zip->entry.offset;
-        zip->entry.state.m_comp_size = 0;
-
-        if (tdefl_init(&(zip->entry.comp), mz_zip_writer_add_put_buf_callback,
-                       &(zip->entry.state),
-                       tdefl_create_comp_flags_from_zip_params(
-                           level, -15, MZ_DEFAULT_STRATEGY)) !=
-            TDEFL_STATUS_OKAY) {
-            // Cannot initialize the zip compressor
-            return -1;
-        }
-    }
+int zip_entry_close(struct zip_t *zip) {
+  mz_zip_archive *pzip = NULL;
+  mz_uint level;
+  tdefl_status done;
+  mz_uint16 entrylen;
+  mz_uint16 dos_time, dos_date;
+  int status = -1;
+
+  if (!zip) {
+    // zip_t handler is not initialized
+    goto cleanup;
+  }
+
+  pzip = &(zip->archive);
+  if (pzip->m_zip_mode == MZ_ZIP_MODE_READING) {
+    status = 0;
+    goto cleanup;
+  }
+
+  level = zip->level & 0xF;
+  if (level) {
+    done = tdefl_compress_buffer(&(zip->entry.comp), "", 0, TDEFL_FINISH);
+    if (done != TDEFL_STATUS_DONE && done != TDEFL_STATUS_OKAY) {
+      // Cannot flush compressed buffer
+      goto cleanup;
+    }
+    zip->entry.comp_size = zip->entry.state.m_comp_size;
+    zip->entry.offset = zip->entry.state.m_cur_archive_file_ofs;
+    zip->entry.method = MZ_DEFLATED;
+  }
+
+  entrylen = (mz_uint16)strlen(zip->entry.name);
+  // no zip64 support yet
+  if ((zip->entry.comp_size > 0xFFFFFFFF) || (zip->entry.offset > 0xFFFFFFFF)) {
+    // No zip64 support, yet
+    goto cleanup;
+  }
+
+  mz_zip_time_t_to_dos_time(zip->entry.m_time, &dos_time, &dos_date);
+  if (!mz_zip_writer_create_local_dir_header(
+          pzip, zip->entry.header, entrylen, 0, zip->entry.uncomp_size,
+          zip->entry.comp_size, zip->entry.uncomp_crc32, zip->entry.method, 0,
+          dos_time, dos_date)) {
+    // Cannot create zip entry header
+    goto cleanup;
+  }
+
+  if (pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.header_offset,
+                     zip->entry.header,
+                     sizeof(zip->entry.header)) != sizeof(zip->entry.header)) {
+    // Cannot write zip entry header
+    goto cleanup;
+  }
+
+  if (!mz_zip_writer_add_to_central_dir(
+          pzip, zip->entry.name, entrylen, NULL, 0, "", 0,
+          zip->entry.uncomp_size, zip->entry.comp_size, zip->entry.uncomp_crc32,
+          zip->entry.method, 0, dos_time, dos_date, zip->entry.header_offset,
+          zip->entry.external_attr)) {
+    // Cannot write to zip central dir
+    goto cleanup;
+  }
+
+  pzip->m_total_files++;
+  pzip->m_archive_size = zip->entry.offset;
+  status = 0;
 
-    return 0;
+cleanup:
+  if (zip) {
+    zip->entry.m_time = 0;
+    CLEANUP(zip->entry.name);
+  }
+  return status;
 }
 
-int zip_entry_close(struct zip_t *zip) {
-    mz_zip_archive *pzip = NULL;
-    mz_uint level;
-    tdefl_status done;
-    mz_uint16 entrylen;
-    time_t t;
-    struct tm *tm;
-    mz_uint16 dos_time, dos_date;
-    int status = -1;
-
-    if (!zip) {
-        // zip_t handler is not initialized
-        return -1;
-    }
+const char *zip_entry_name(struct zip_t *zip) {
+  if (!zip) {
+    // zip_t handler is not initialized
+    return NULL;
+  }
 
-    if (zip->mode == 'r') {
-        return 0;
-    }
+  return zip->entry.name;
+}
 
-    pzip = &(zip->archive);
-    level = zip->level & 0xF;
-    if (level) {
-        done = tdefl_compress_buffer(&(zip->entry.comp), "", 0, TDEFL_FINISH);
-        if (done != TDEFL_STATUS_DONE && done != TDEFL_STATUS_OKAY) {
-            // Cannot flush compressed buffer
-            goto cleanup;
-        }
-        zip->entry.comp_size = zip->entry.state.m_comp_size;
-        zip->entry.offset = zip->entry.state.m_cur_archive_file_ofs;
-        zip->entry.method = MZ_DEFLATED;
-    }
+int zip_entry_index(struct zip_t *zip) {
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
 
-    entrylen = (mz_uint16)strlen(zip->entry.name);
-    t = time(NULL);
-    tm = localtime(&t);
-    dos_time = (mz_uint16)(((tm->tm_hour) << 11) + ((tm->tm_min) << 5) +
-                           ((tm->tm_sec) >> 1));
-    dos_date = (mz_uint16)(((tm->tm_year + 1900 - 1980) << 9) +
-                           ((tm->tm_mon + 1) << 5) + tm->tm_mday);
-
-    // no zip64 support yet
-    if ((zip->entry.comp_size > 0xFFFFFFFF) ||
-        (zip->entry.offset > 0xFFFFFFFF)) {
-        // No zip64 support, yet
-        goto cleanup;
-    }
+  return zip->entry.index;
+}
 
-    if (!mz_zip_writer_create_local_dir_header(
-            pzip, zip->entry.header, entrylen, 0, zip->entry.uncomp_size,
-            zip->entry.comp_size, zip->entry.uncomp_crc32, zip->entry.method, 0,
-            dos_time, dos_date)) {
-        // Cannot create zip entry header
-        goto cleanup;
-    }
+int zip_entry_isdir(struct zip_t *zip) {
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
 
-    if (pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.header_offset,
-                       zip->entry.header, sizeof(zip->entry.header)) !=
-        sizeof(zip->entry.header)) {
-        // Cannot write zip entry header
-        goto cleanup;
-    }
+  if (zip->entry.index < 0) {
+    // zip entry is not opened
+    return -1;
+  }
 
-    if (!mz_zip_writer_add_to_central_dir(
-            pzip, zip->entry.name, entrylen, NULL, 0, "", 0,
-            zip->entry.uncomp_size, zip->entry.comp_size,
-            zip->entry.uncomp_crc32, zip->entry.method, 0, dos_time, dos_date,
-            zip->entry.header_offset, 0)) {
-        // Cannot write to zip central dir
-        goto cleanup;
-    }
+  return (int)mz_zip_reader_is_file_a_directory(&zip->archive,
+                                                (mz_uint)zip->entry.index);
+}
 
-    pzip->m_total_files++;
-    pzip->m_archive_size = zip->entry.offset;
-    status = 0;
+unsigned long long zip_entry_size(struct zip_t *zip) {
+  return zip ? zip->entry.uncomp_size : 0;
+}
 
-cleanup:
-    CLEANUP(zip->entry.name);
-    return status;
+unsigned int zip_entry_crc32(struct zip_t *zip) {
+  return zip ? zip->entry.uncomp_crc32 : 0;
 }
 
 int zip_entry_write(struct zip_t *zip, const void *buf, size_t bufsize) {
-    mz_uint level;
-    mz_zip_archive *pzip = NULL;
-    tdefl_status status;
+  mz_uint level;
+  mz_zip_archive *pzip = NULL;
+  tdefl_status status;
 
-    if (!zip) {
-        // zip_t handler is not initialized
-        return -1;
-    }
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
 
-    pzip = &(zip->archive);
-    if (buf && bufsize > 0) {
-        zip->entry.uncomp_size += bufsize;
-        zip->entry.uncomp_crc32 = (mz_uint32)mz_crc32(
-            zip->entry.uncomp_crc32, (const mz_uint8 *)buf, bufsize);
-
-        level = zip->level & 0xF;
-        if (!level) {
-            if ((pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, buf,
-                                bufsize) != bufsize)) {
-                // Cannot write buffer
-                return -1;
-            }
-            zip->entry.offset += bufsize;
-            zip->entry.comp_size += bufsize;
-        } else {
-            status = tdefl_compress_buffer(&(zip->entry.comp), buf, bufsize,
-                                           TDEFL_NO_FLUSH);
-            if (status != TDEFL_STATUS_DONE && status != TDEFL_STATUS_OKAY) {
-                // Cannot compress buffer
-                return -1;
-            }
-        }
+  pzip = &(zip->archive);
+  if (buf && bufsize > 0) {
+    zip->entry.uncomp_size += bufsize;
+    zip->entry.uncomp_crc32 = (mz_uint32)mz_crc32(
+        zip->entry.uncomp_crc32, (const mz_uint8 *)buf, bufsize);
+
+    level = zip->level & 0xF;
+    if (!level) {
+      if ((pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, buf,
+                          bufsize) != bufsize)) {
+        // Cannot write buffer
+        return -1;
+      }
+      zip->entry.offset += bufsize;
+      zip->entry.comp_size += bufsize;
+    } else {
+      status = tdefl_compress_buffer(&(zip->entry.comp), buf, bufsize,
+                                     TDEFL_NO_FLUSH);
+      if (status != TDEFL_STATUS_DONE && status != TDEFL_STATUS_OKAY) {
+        // Cannot compress buffer
+        return -1;
+      }
     }
+  }
 
-    return 0;
+  return 0;
 }
 
 int zip_entry_fwrite(struct zip_t *zip, const char *filename) {
-    int status = 0;
-    size_t n = 0;
-    FILE *stream = NULL;
-    mz_uint8 buf[MZ_ZIP_MAX_IO_BUF_SIZE] = {0};
-
-    if (!zip) {
-        // zip_t handler is not initialized
-        return -1;
-    }
+  int status = 0;
+  size_t n = 0;
+  FILE *stream = NULL;
+  mz_uint8 buf[MZ_ZIP_MAX_IO_BUF_SIZE];
+  struct MZ_FILE_STAT_STRUCT file_stat;
+
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
+
+  memset(buf, 0, MZ_ZIP_MAX_IO_BUF_SIZE);
+  memset((void *)&file_stat, 0, sizeof(struct MZ_FILE_STAT_STRUCT));
+  if (MZ_FILE_STAT(filename, &file_stat) != 0) {
+    // problem getting information - check errno
+    return -1;
+  }
+
+  if ((file_stat.st_mode & 0200) == 0) {
+    // MS-DOS read-only attribute
+    zip->entry.external_attr |= 0x01;
+  }
+  zip->entry.external_attr |= (mz_uint32)((file_stat.st_mode & 0xFFFF) << 16);
+  zip->entry.m_time = file_stat.st_mtime;
+
+#if defined(_MSC_VER)
+  if (fopen_s(&stream, filename, "rb"))
+#else
+  if (!(stream = fopen(filename, "rb")))
+#endif
+  {
+    // Cannot open filename
+    return -1;
+  }
 
-    stream = fopen(filename, "rb");
-    if (!stream) {
-        // Cannot open filename
-        return -1;
+  while ((n = fread(buf, sizeof(mz_uint8), MZ_ZIP_MAX_IO_BUF_SIZE, stream)) >
+         0) {
+    if (zip_entry_write(zip, buf, n) < 0) {
+      status = -1;
+      break;
     }
+  }
+  fclose(stream);
 
-    while ((n = fread(buf, sizeof(mz_uint8), MZ_ZIP_MAX_IO_BUF_SIZE, stream)) >
-           0) {
-        if (zip_entry_write(zip, buf, n) < 0) {
-            status = -1;
-            break;
-        }
-    }
-    fclose(stream);
+  return status;
+}
 
-    return status;
+ssize_t zip_entry_read(struct zip_t *zip, void **buf, size_t *bufsize) {
+  mz_zip_archive *pzip = NULL;
+  mz_uint idx;
+  size_t size = 0;
+
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
+
+  pzip = &(zip->archive);
+  if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) {
+    // the entry is not found or we do not have read access
+    return -1;
+  }
+
+  idx = (mz_uint)zip->entry.index;
+  if (mz_zip_reader_is_file_a_directory(pzip, idx)) {
+    // the entry is a directory
+    return -1;
+  }
+
+  *buf = mz_zip_reader_extract_to_heap(pzip, idx, &size, 0);
+  if (*buf && bufsize) {
+    *bufsize = size;
+  }
+  return size;
 }
 
-int zip_entry_read(struct zip_t *zip, void **buf, size_t *bufsize) {
-    mz_zip_archive *pzip = NULL;
-    mz_uint idx;
+ssize_t zip_entry_noallocread(struct zip_t *zip, void *buf, size_t bufsize) {
+  mz_zip_archive *pzip = NULL;
 
-    if (!zip) {
-        // zip_t handler is not initialized
-        return -1;
-    }
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
 
-    if (zip->mode != 'r' || zip->entry.index < 0) {
-        // the entry is not found or we do not have read access
-        return -1;
-    }
+  pzip = &(zip->archive);
+  if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) {
+    // the entry is not found or we do not have read access
+    return -1;
+  }
 
-    pzip = &(zip->archive);
-    idx = (mz_uint)zip->entry.index;
-    if (mz_zip_reader_is_file_a_directory(pzip, idx)) {
-        // the entry is a directory
-        return -1;
-    }
+  if (!mz_zip_reader_extract_to_mem_no_alloc(pzip, (mz_uint)zip->entry.index,
+  buf, bufsize, 0, NULL,  0)) {
+    return -1;
+  }
 
-    *buf = mz_zip_reader_extract_to_heap(pzip, idx, bufsize, 0);
-    return (*buf) ? 0 : -1;
+  return (ssize_t)zip->entry.uncomp_size;
 }
 
 int zip_entry_fread(struct zip_t *zip, const char *filename) {
-    mz_zip_archive *pzip = NULL;
-    mz_uint idx;
-
-    if (!zip) {
-        // zip_t handler is not initialized
-        return -1;
-    }
+  mz_zip_archive *pzip = NULL;
+  mz_uint idx;
+  mz_uint32 xattr = 0;
+  mz_zip_archive_file_stat info;
+
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
+
+  memset((void *)&info, 0, sizeof(mz_zip_archive_file_stat));
+  pzip = &(zip->archive);
+  if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) {
+    // the entry is not found or we do not have read access
+    return -1;
+  }
+
+  idx = (mz_uint)zip->entry.index;
+  if (mz_zip_reader_is_file_a_directory(pzip, idx)) {
+    // the entry is a directory
+    return -1;
+  }
+
+  if (!mz_zip_reader_extract_to_file(pzip, idx, filename, 0)) {
+    return -1;
+  }
+
+#if defined(_MSC_VER)
+#else
+  if (!mz_zip_reader_file_stat(pzip, idx, &info)) {
+    // Cannot get information about zip archive;
+    return -1;
+  }
 
-    if (zip->mode != 'r' || zip->entry.index < 0) {
-        // the entry is not found or we do not have read access
-        return -1;
-    }
-
-    pzip = &(zip->archive);
-    idx = (mz_uint)zip->entry.index;
-    if (mz_zip_reader_is_file_a_directory(pzip, idx)) {
-        // the entry is a directory
-        return -1;
+  xattr = (info.m_external_attr >> 16) & 0xFFFF;
+  if (xattr > 0) {
+    if (chmod(filename, (mode_t)xattr) < 0) {
+      return -1;
     }
+  }
+#endif
 
-    return (mz_zip_reader_extract_to_file(pzip, idx, filename, 0)) ? 0 : -1;
+  return 0;
 }
 
 int zip_entry_extract(struct zip_t *zip,
                       size_t (*on_extract)(void *arg, unsigned long long offset,
                                            const void *buf, size_t bufsize),
                       void *arg) {
-    mz_zip_archive *pzip = NULL;
-    mz_uint idx;
-
-    if (!zip) {
-        // zip_t handler is not initialized
-        return -1;
-    }
-
-    if (zip->mode != 'r' || zip->entry.index < 0) {
-        // the entry is not found or we do not have read access
-        return -1;
-    }
+  mz_zip_archive *pzip = NULL;
+  mz_uint idx;
+
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
+
+  pzip = &(zip->archive);
+  if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) {
+    // the entry is not found or we do not have read access
+    return -1;
+  }
+
+  idx = (mz_uint)zip->entry.index;
+  return (mz_zip_reader_extract_to_callback(pzip, idx, on_extract, arg, 0))
+             ? 0
+             : -1;
+}
 
-    pzip = &(zip->archive);
-    idx = (mz_uint)zip->entry.index;
+int zip_total_entries(struct zip_t *zip) {
+  if (!zip) {
+    // zip_t handler is not initialized
+    return -1;
+  }
 
-    return (mz_zip_reader_extract_to_callback(pzip, idx, on_extract, arg, 0))
-               ? 0
-               : -1;
+  return (int)zip->archive.m_total_files;
 }
 
 int zip_create(const char *zipname, const char *filenames[], size_t len) {
-    int status = 0;
-    size_t i;
-    mz_zip_archive zip_archive;
+  int status = 0;
+  size_t i;
+  mz_zip_archive zip_archive;
+  struct MZ_FILE_STAT_STRUCT file_stat;
+  mz_uint32 ext_attributes = 0;
 
-    if (!zipname || strlen(zipname) < 1) {
-        // zip_t archive name is empty or NULL
-        return -1;
-    }
+  if (!zipname || strlen(zipname) < 1) {
+    // zip_t archive name is empty or NULL
+    return -1;
+  }
 
-    // Create a new archive.
-    if (!memset(&(zip_archive), 0, sizeof(zip_archive))) {
-        // Cannot memset zip archive
-        return -1;
-    }
+  // Create a new archive.
+  if (!memset(&(zip_archive), 0, sizeof(zip_archive))) {
+    // Cannot memset zip archive
+    return -1;
+  }
 
-    if (!mz_zip_writer_init_file(&zip_archive, zipname, 0)) {
-        // Cannot initialize zip_archive writer
-        return -1;
-    }
+  if (!mz_zip_writer_init_file(&zip_archive, zipname, 0)) {
+    // Cannot initialize zip_archive writer
+    return -1;
+  }
 
-    for (i = 0; i < len; ++i) {
-        const char *name = filenames[i];
-        if (!name) {
-            status = -1;
-            break;
-        }
+  memset((void *)&file_stat, 0, sizeof(struct MZ_FILE_STAT_STRUCT));
 
-        if (!mz_zip_writer_add_file(&zip_archive, basename(name), name, "", 0,
-                                    ZIP_DEFAULT_COMPRESSION_LEVEL)) {
-            // Cannot add file to zip_archive
-            status = -1;
-            break;
-        }
+  for (i = 0; i < len; ++i) {
+    const char *name = filenames[i];
+    if (!name) {
+      status = -1;
+      break;
     }
 
-    mz_zip_writer_finalize_archive(&zip_archive);
-    mz_zip_writer_end(&zip_archive);
-    return status;
-}
-
-int zip_extract(const char *zipname, const char *dir,
-                int (*on_extract)(const char *filename, void *arg), void *arg) {
-    int status = -1;
-    mz_uint i, n;
-    char path[MAX_PATH + 1] = {0};
-    mz_zip_archive zip_archive;
-    mz_zip_archive_file_stat info;
-    size_t dirlen = 0;
-
-    if (!memset(&(zip_archive), 0, sizeof(zip_archive))) {
-        // Cannot memset zip archive
-        return -1;
+    if (MZ_FILE_STAT(name, &file_stat) != 0) {
+      // problem getting information - check errno
+      return -1;
     }
 
-    if (!zipname || !dir) {
-        // Cannot parse zip archive name
-        return -1;
+    if ((file_stat.st_mode & 0200) == 0) {
+      // MS-DOS read-only attribute
+      ext_attributes |= 0x01;
     }
+    ext_attributes |= (mz_uint32)((file_stat.st_mode & 0xFFFF) << 16);
 
-    dirlen = strlen(dir);
-    if (dirlen + 1 > MAX_PATH) {
-        return -1;
+    if (!mz_zip_writer_add_file(&zip_archive, base_name(name), name, "", 0,
+                                ZIP_DEFAULT_COMPRESSION_LEVEL,
+                                ext_attributes)) {
+      // Cannot add file to zip_archive
+      status = -1;
+      break;
     }
+  }
 
-    // Now try to open the archive.
-    if (!mz_zip_reader_init_file(&zip_archive, zipname, 0)) {
-        // Cannot initialize zip_archive reader
-        return -1;
-    }
+  mz_zip_writer_finalize_archive(&zip_archive);
+  mz_zip_writer_end(&zip_archive);
+  return status;
+}
 
-    strcpy(path, dir);
-    if (!ISSLASH(path[dirlen - 1])) {
-#if defined _WIN32 || defined __WIN32__
-        path[dirlen] = '\\';
+int zip_extract(const char *zipname, const char *dir,
+                int (*on_extract)(const char *filename, void *arg), void *arg) {
+  int status = -1;
+  mz_uint i, n;
+  char path[MAX_PATH + 1];
+  char symlink_to[MAX_PATH + 1];
+  mz_zip_archive zip_archive;
+  mz_zip_archive_file_stat info;
+  size_t dirlen = 0;
+  mz_uint32 xattr = 0;
+
+  memset(path, 0, sizeof(path));
+  memset(symlink_to, 0, sizeof(symlink_to));
+  if (!memset(&(zip_archive), 0, sizeof(zip_archive))) {
+    // Cannot memset zip archive
+    return -1;
+  }
+
+  if (!zipname || !dir) {
+    // Cannot parse zip archive name
+    return -1;
+  }
+
+  dirlen = strlen(dir);
+  if (dirlen + 1 > MAX_PATH) {
+    return -1;
+  }
+
+  // Now try to open the archive.
+  if (!mz_zip_reader_init_file(&zip_archive, zipname, 0)) {
+    // Cannot initialize zip_archive reader
+    return -1;
+  }
+
+  memset((void *)&info, 0, sizeof(mz_zip_archive_file_stat));
+
+#if defined(_MSC_VER)
+  strcpy_s(path, MAX_PATH, dir);
 #else
-        path[dirlen] = '/';
+  strcpy(path, dir);
 #endif
-        ++dirlen;
-    }
 
-    // Get and print information about each file in the archive.
-    n = mz_zip_reader_get_num_files(&zip_archive);
-    for (i = 0; i < n; ++i) {
-        if (!mz_zip_reader_file_stat(&zip_archive, i, &info)) {
-            // Cannot get information about zip archive;
-            goto out;
-        }
-        strncpy(&path[dirlen], info.m_filename, MAX_PATH - dirlen);
-        if (mkpath(path) < 0) {
-            // Cannot make a path
-            goto out;
+  if (!ISSLASH(path[dirlen - 1])) {
+#if defined(_WIN32) || defined(__WIN32__)
+    path[dirlen] = '\\';
+#else
+    path[dirlen] = '/';
+#endif
+    ++dirlen;
+  }
+
+  // Get and print information about each file in the archive.
+  n = mz_zip_reader_get_num_files(&zip_archive);
+  for (i = 0; i < n; ++i) {
+    if (!mz_zip_reader_file_stat(&zip_archive, i, &info)) {
+      // Cannot get information about zip archive;
+      goto out;
+    }
+#if defined(_MSC_VER)
+    strncpy_s(&path[dirlen], MAX_PATH - dirlen, info.m_filename,
+              MAX_PATH - dirlen);
+#else
+    strncpy(&path[dirlen], info.m_filename, MAX_PATH - dirlen);
+#endif
+    if (mkpath(path) < 0) {
+      // Cannot make a path
+      goto out;
+    }
+
+    if ((((info.m_version_made_by >> 8) == 3) || ((info.m_version_made_by >> 8) == 19)) // if zip is produced on Unix or macOS (3 and 19 from section 4.4.2.2 of zip standard)
+        && info.m_external_attr & (0x20 << 24)) { // and has sym link attribute (0x80 is file, 0x40 is directory)
+#if defined(_WIN32) || defined(__WIN32__) || defined(_MSC_VER) ||              \
+    defined(__MINGW32__)
+#else      
+      if (info.m_uncomp_size > MAX_PATH || !mz_zip_reader_extract_to_mem_no_alloc(&zip_archive, i, symlink_to, MAX_PATH, 0, NULL, 0)) {
+        goto out;
+      }
+      symlink_to[info.m_uncomp_size] = '\0';
+      if (symlink(symlink_to, path) != 0) {
+        goto out;
+      }
+#endif
+    } else {
+      if (!mz_zip_reader_is_file_a_directory(&zip_archive, i)) {
+        if (!mz_zip_reader_extract_to_file(&zip_archive, i, path, 0)) {
+          // Cannot extract zip archive to file
+          goto out;
         }
+      }
 
-        if (!mz_zip_reader_is_file_a_directory(&zip_archive, i)) {
-            if (!mz_zip_reader_extract_to_file(&zip_archive, i, path, 0)) {
-                // Cannot extract zip archive to file
-                goto out;
-            }
+#if defined(_MSC_VER)
+#else
+      xattr = (info.m_external_attr >> 16) & 0xFFFF;
+      if (xattr > 0) {
+        if (chmod(path, (mode_t)xattr) < 0) {
+          goto out;
         }
+      }
+#endif
+    }
 
-        if (on_extract) {
-            if (on_extract(path, arg) < 0) {
-                goto out;
-            }
-        }
+    if (on_extract) {
+      if (on_extract(path, arg) < 0) {
+        goto out;
+      }
     }
-    status = 0;
+  }
+  status = 0;
 
 out:
-    // Close the archive, freeing any resources it was using
-    if (!mz_zip_reader_end(&zip_archive)) {
-        // Cannot end zip reader
-        status = -1;
-    }
+  // Close the archive, freeing any resources it was using
+  if (!mz_zip_reader_end(&zip_archive)) {
+    // Cannot end zip reader
+    status = -1;
+  }
 
-    return status;
+  return status;
 }

contrib/zip/src/zip.h

@@ -13,11 +13,24 @@
 #define ZIP_H
 
 #include <string.h>
+#include <sys/types.h>
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#if !defined(_SSIZE_T_DEFINED) && !defined(_SSIZE_T_DEFINED_) &&               \
+    !defined(_SSIZE_T) && !defined(_SSIZE_T_) && !defined(__ssize_t_defined)
+#define _SSIZE_T
+// 64-bit Windows is the only mainstream platform
+// where sizeof(long) != sizeof(void*)
+#ifdef _WIN64
+typedef long long  ssize_t;  /* byte count or error */
+#else
+typedef long  ssize_t;  /* byte count or error */
+#endif
+#endif
+
 #ifndef MAX_PATH
 #define MAX_PATH 32767 /* # chars in a path name including NULL */
 #endif
@@ -47,7 +60,7 @@ struct zip_t;
 extern struct zip_t *zip_open(const char *zipname, int level, char mode);
 
 /*
-  Closes zip archive, releases resources - always finalize.
+  Closes the zip archive, releases resources - always finalize.
 
   Args:
     zip: zip archive handler.
@@ -55,7 +68,10 @@ extern struct zip_t *zip_open(const char *zipname, int level, char mode);
 extern void zip_close(struct zip_t *zip);
 
 /*
-  Opens a new entry for writing in a zip archive.
+  Opens an entry by name in the zip archive.
+  For zip archive opened in 'w' or 'a' mode the function will append
+  a new entry. In readonly mode the function tries to locate the entry
+  in global dictionary.
 
   Args:
     zip: zip archive handler.
@@ -66,6 +82,19 @@ extern void zip_close(struct zip_t *zip);
 */
 extern int zip_entry_open(struct zip_t *zip, const char *entryname);
 
+/*
+  Opens a new entry by index in the zip archive.
+  This function is only valid if zip archive was opened in 'r' (readonly) mode.
+
+  Args:
+    zip: zip archive handler.
+    index: index in local dictionary.
+
+  Returns:
+    The return code - 0 on success, negative number (< 0) on error.
+*/
+extern int zip_entry_openbyindex(struct zip_t *zip, int index);
+
 /*
   Closes a zip entry, flushes buffer and releases resources.
 
@@ -77,6 +106,67 @@ extern int zip_entry_open(struct zip_t *zip, const char *entryname);
 */
 extern int zip_entry_close(struct zip_t *zip);
 
+/*
+  Returns a local name of the current zip entry.
+  The main difference between user's entry name and local entry name
+  is optional relative path.
+  Following .ZIP File Format Specification - the path stored MUST not contain
+  a drive or device letter, or a leading slash.
+  All slashes MUST be forward slashes '/' as opposed to backwards slashes '\'
+  for compatibility with Amiga and UNIX file systems etc.
+
+  Args:
+    zip: zip archive handler.
+
+  Returns:
+    The pointer to the current zip entry name, or NULL on error.
+*/
+extern const char *zip_entry_name(struct zip_t *zip);
+
+/*
+  Returns an index of the current zip entry.
+
+  Args:
+    zip: zip archive handler.
+
+  Returns:
+    The index on success, negative number (< 0) on error.
+*/
+extern int zip_entry_index(struct zip_t *zip);
+
+/*
+  Determines if the current zip entry is a directory entry.
+
+  Args:
+    zip: zip archive handler.
+
+  Returns:
+    The return code - 1 (true), 0 (false), negative number (< 0) on error.
+*/
+extern int zip_entry_isdir(struct zip_t *zip);
+
+/*
+  Returns an uncompressed size of the current zip entry.
+
+  Args:
+    zip: zip archive handler.
+
+  Returns:
+    The uncompressed size in bytes.
+*/
+extern unsigned long long zip_entry_size(struct zip_t *zip);
+
+/*
+  Returns CRC-32 checksum of the current zip entry.
+
+  Args:
+    zip: zip archive handler.
+
+  Returns:
+    The CRC-32 checksum.
+*/
+extern unsigned int zip_entry_crc32(struct zip_t *zip);
+
 /*
   Compresses an input buffer for the current zip entry.
 
@@ -116,9 +206,31 @@ extern int zip_entry_fwrite(struct zip_t *zip, const char *filename);
     - for large entries, please take a look at zip_entry_extract function.
 
   Returns:
-    The return code - 0 on success, negative number (< 0) on error.
+    The return code - the number of bytes actually read on success.
+    Otherwise a -1 on error.
 */
-extern int zip_entry_read(struct zip_t *zip, void **buf, size_t *bufsize);
+extern ssize_t zip_entry_read(struct zip_t *zip, void **buf, size_t *bufsize);
+
+/*
+  Extracts the current zip entry into a memory buffer using no memory
+  allocation.
+
+  Args:
+    zip: zip archive handler.
+    buf: preallocated output buffer.
+    bufsize: output buffer size (in bytes).
+
+  Note:
+    - ensure supplied output buffer is large enough.
+    - zip_entry_size function (returns uncompressed size for the current entry)
+      can be handy to estimate how big buffer is needed.
+    - for large entries, please take a look at zip_entry_extract function.
+
+  Returns:
+    The return code - the number of bytes actually read on success.
+    Otherwise a -1 on error (e.g. bufsize is not large enough).
+*/
+extern ssize_t zip_entry_noallocread(struct zip_t *zip, void *buf, size_t bufsize);
 
 /*
   Extracts the current zip entry into output file.
@@ -133,9 +245,9 @@ extern int zip_entry_read(struct zip_t *zip, void **buf, size_t *bufsize);
 extern int zip_entry_fread(struct zip_t *zip, const char *filename);
 
 /*
-   Extract the current zip entry using a callback function (on_extract).
+  Extracts the current zip entry using a callback function (on_extract).
 
-   Args:
+  Args:
     zip: zip archive handler.
     on_extract: callback function.
     arg: opaque pointer (optional argument,
@@ -144,12 +256,23 @@ extern int zip_entry_fread(struct zip_t *zip, const char *filename);
    Returns:
     The return code - 0 on success, negative number (< 0) on error.
  */
-extern int zip_entry_extract(struct zip_t *zip,
-                             size_t (*on_extract)(void *arg,
-                                                  unsigned long long offset,
-                                                  const void *data,
-                                                  size_t size),
-                             void *arg);
+extern int
+zip_entry_extract(struct zip_t *zip,
+                  size_t (*on_extract)(void *arg, unsigned long long offset,
+                                       const void *data, size_t size),
+                  void *arg);
+
+/*
+  Returns the number of all entries (files and directories) in the zip archive.
+
+  Args:
+    zip: zip archive handler.
+
+  Returns:
+    The return code - the number of entries on success,
+    negative number (< 0) on error.
+*/
+extern int zip_total_entries(struct zip_t *zip);
 
 /*
   Creates a new archive and puts files into a single zip archive.

contrib/zip/test/CMakeLists.txt

@@ -1,7 +1,19 @@
 cmake_minimum_required(VERSION 2.8)
 
+if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "AppleClang")
+  if(ENABLE_COVERAGE)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g ")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O0")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fprofile-arcs")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ftest-coverage")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --coverage")
+  endif()
+endif ()
+
 # test
 include_directories(../src)
 add_executable(test.exe test.c ../src/zip.c)
+add_executable(test_miniz.exe test_miniz.c)
 
 add_test(NAME test COMMAND test.exe)
+add_test(NAME test_miniz COMMAND test_miniz.exe)

contrib/zip/test/test.c

@@ -4,102 +4,458 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
 
-#define ZIPNAME "test.zip"
+#if defined(_MSC_VER) || defined(__MINGW64__) || defined(__MINGW32__)
+#define MZ_FILE_STAT_STRUCT _stat
+#define MZ_FILE_STAT _stat
+#else
+#define MZ_FILE_STAT_STRUCT stat
+#define MZ_FILE_STAT stat
+#endif
+
+#define ZIPNAME "test.zip\0"
 #define TESTDATA1 "Some test data 1...\0"
+#define CRC32DATA1 2220805626
 #define TESTDATA2 "Some test data 2...\0"
+#define CRC32DATA2 2532008468
+
+#define RFILE "4.txt\0"
+#define RMODE 0100444
+
+#define WFILE "6.txt\0"
+#define WMODE 0100666
+
+#define XFILE "7.txt\0"
+#define XMODE 0100777
+
+#define UNUSED(x) (void)x
+
+static int total_entries = 0;
 
 static void test_write(void) {
-    struct zip_t *zip = zip_open(ZIPNAME, ZIP_DEFAULT_COMPRESSION_LEVEL, 'w');
-    assert(zip != NULL);
+  struct zip_t *zip = zip_open(ZIPNAME, ZIP_DEFAULT_COMPRESSION_LEVEL, 'w');
+  assert(zip != NULL);
 
-    assert(0 == zip_entry_open(zip, "test/test-1.txt"));
-    assert(0 == zip_entry_write(zip, TESTDATA1, strlen(TESTDATA1)));
-    assert(0 == zip_entry_close(zip));
+  assert(0 == zip_entry_open(zip, "test/test-1.txt"));
+  assert(0 == zip_entry_write(zip, TESTDATA1, strlen(TESTDATA1)));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-1.txt"));
+  assert(total_entries == zip_entry_index(zip));
+  assert(strlen(TESTDATA1) == zip_entry_size(zip));
+  assert(CRC32DATA1 == zip_entry_crc32(zip));
+  ++total_entries;
+  assert(0 == zip_entry_close(zip));
 
-    zip_close(zip);
+  zip_close(zip);
 }
 
 static void test_append(void) {
-    struct zip_t *zip = zip_open(ZIPNAME, ZIP_DEFAULT_COMPRESSION_LEVEL, 'a');
-    assert(zip != NULL);
+  struct zip_t *zip = zip_open(ZIPNAME, ZIP_DEFAULT_COMPRESSION_LEVEL, 'a');
+  assert(zip != NULL);
 
-    assert(0 == zip_entry_open(zip, "test\\test-2.txt"));
-    assert(0 == zip_entry_write(zip, TESTDATA2, strlen(TESTDATA2)));
-    assert(0 == zip_entry_close(zip));
+  assert(0 == zip_entry_open(zip, "test\\test-2.txt"));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-2.txt"));
+  assert(total_entries == zip_entry_index(zip));
+  assert(0 == zip_entry_write(zip, TESTDATA2, strlen(TESTDATA2)));
+  assert(strlen(TESTDATA2) == zip_entry_size(zip));
+  assert(CRC32DATA2 == zip_entry_crc32(zip));
+
+  ++total_entries;
+  assert(0 == zip_entry_close(zip));
+
+  assert(0 == zip_entry_open(zip, "test\\empty/"));
+  assert(0 == strcmp(zip_entry_name(zip), "test/empty/"));
+  assert(0 == zip_entry_size(zip));
+  assert(0 == zip_entry_crc32(zip));
+
+  assert(total_entries == zip_entry_index(zip));
+  ++total_entries;
+  assert(0 == zip_entry_close(zip));
+
+  assert(0 == zip_entry_open(zip, "empty/"));
+  assert(0 == strcmp(zip_entry_name(zip), "empty/"));
+  assert(0 == zip_entry_size(zip));
+  assert(0 == zip_entry_crc32(zip));
 
-    zip_close(zip);
+  assert(total_entries == zip_entry_index(zip));
+  ++total_entries;
+  assert(0 == zip_entry_close(zip));
+
+  zip_close(zip);
 }
 
 static void test_read(void) {
-    char *buf = NULL;
-    size_t bufsize;
-    struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
-    assert(zip != NULL);
-
-    assert(0 == zip_entry_open(zip, "test\\test-1.txt"));
-    assert(0 == zip_entry_read(zip, (void **)&buf, &bufsize));
-    assert(bufsize == strlen(TESTDATA1));
-    assert(0 == strncmp(buf, TESTDATA1, bufsize));
-    assert(0 == zip_entry_close(zip));
-    free(buf);
-    buf = NULL;
-    bufsize = 0;
-
-    assert(0 == zip_entry_open(zip, "test/test-2.txt"));
-    assert(0 == zip_entry_read(zip, (void **)&buf, &bufsize));
-    assert(bufsize == strlen(TESTDATA2));
-    assert(0 == strncmp(buf, TESTDATA2, bufsize));
-    assert(0 == zip_entry_close(zip));
-    free(buf);
-    buf = NULL;
-    bufsize = 0;
+  char *buf = NULL;
+  ssize_t bufsize;
+  size_t buftmp;
+  struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
+  assert(zip != NULL);
+
+  assert(0 == zip_entry_open(zip, "test\\test-1.txt"));
+  assert(strlen(TESTDATA1) == zip_entry_size(zip));
+  assert(CRC32DATA1 == zip_entry_crc32(zip));
+
+  bufsize = zip_entry_read(zip, (void **)&buf, &buftmp);
+  assert(bufsize == strlen(TESTDATA1));
+  assert((size_t)bufsize == buftmp);
+  assert(0 == strncmp(buf, TESTDATA1, bufsize));
+  assert(0 == zip_entry_close(zip));
+  free(buf);
+  buf = NULL;
+  bufsize = 0;
+
+  assert(0 == zip_entry_open(zip, "test/test-2.txt"));
+  assert(strlen(TESTDATA2) == zip_entry_size(zip));
+  assert(CRC32DATA2 == zip_entry_crc32(zip));
+
+  bufsize = zip_entry_read(zip, (void **)&buf, NULL);
+  assert((size_t)bufsize == strlen(TESTDATA2));
+  assert(0 == strncmp(buf, TESTDATA2, (size_t)bufsize));
+  assert(0 == zip_entry_close(zip));
+  free(buf);
+  buf = NULL;
+  bufsize = 0;
+
+  assert(0 == zip_entry_open(zip, "test\\empty/"));
+  assert(0 == strcmp(zip_entry_name(zip), "test/empty/"));
+  assert(0 == zip_entry_size(zip));
+  assert(0 == zip_entry_crc32(zip));
+  assert(0 == zip_entry_close(zip));
+
+  buftmp = strlen(TESTDATA2);
+  buf = calloc(buftmp, sizeof(char));
+  assert(0 == zip_entry_open(zip, "test/test-2.txt"));
+
+  bufsize = zip_entry_noallocread(zip, (void *)buf, buftmp);
+  assert(buftmp == (size_t)bufsize);
+  assert(0 == strncmp(buf, TESTDATA2, buftmp));
+  assert(0 == zip_entry_close(zip));
+  free(buf);
+  buf = NULL;
+  bufsize = 0;
+
+  buftmp = strlen(TESTDATA1);
+  buf = calloc(buftmp, sizeof(char));
+  assert(0 == zip_entry_open(zip, "test/test-1.txt"));
 
-    zip_close(zip);
+  bufsize = zip_entry_noallocread(zip, (void *)buf, buftmp);
+  assert(buftmp == (size_t)bufsize);
+  assert(0 == strncmp(buf, TESTDATA1, buftmp));
+  assert(0 == zip_entry_close(zip));
+  free(buf);
+  buf = NULL;
+  bufsize = 0;
+
+  zip_close(zip);
 }
 
 struct buffer_t {
-    char *data;
-    size_t size;
+  char *data;
+  size_t size;
 };
 
 static size_t on_extract(void *arg, unsigned long long offset, const void *data,
                          size_t size) {
-    struct buffer_t *buf = (struct buffer_t *)arg;
-    buf->data = realloc(buf->data, buf->size + size + 1);
-    assert(NULL != buf->data);
+  UNUSED(offset);
+
+  struct buffer_t *buf = (struct buffer_t *)arg;
+  buf->data = realloc(buf->data, buf->size + size + 1);
+  assert(NULL != buf->data);
 
-    memcpy(&(buf->data[buf->size]), data, size);
-    buf->size += size;
-    buf->data[buf->size] = 0;
+  memcpy(&(buf->data[buf->size]), data, size);
+  buf->size += size;
+  buf->data[buf->size] = 0;
 
-    return size;
+  return size;
 }
 
 static void test_extract(void) {
-    struct buffer_t buf = {0};
+  struct buffer_t buf;
+
+  struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
+  assert(zip != NULL);
+  memset((void *)&buf, 0, sizeof(struct buffer_t));
+
+  assert(0 == zip_entry_open(zip, "test/test-1.txt"));
+  assert(0 == zip_entry_extract(zip, on_extract, &buf));
+
+  assert(buf.size == strlen(TESTDATA1));
+  assert(0 == strncmp(buf.data, TESTDATA1, buf.size));
+  assert(0 == zip_entry_close(zip));
+  free(buf.data);
+  buf.data = NULL;
+  buf.size = 0;
+
+  zip_close(zip);
+}
+
+static void test_total_entries(void) {
+  struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
+  assert(zip != NULL);
+
+  int n = zip_total_entries(zip);
+  zip_close(zip);
+
+  assert(n == total_entries);
+}
+
+static void test_entry_name(void) {
+  struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
+  assert(zip != NULL);
+
+  assert(zip_entry_name(zip) == NULL);
+
+  assert(0 == zip_entry_open(zip, "test\\test-1.txt"));
+  assert(NULL != zip_entry_name(zip));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-1.txt"));
+  assert(strlen(TESTDATA1) == zip_entry_size(zip));
+  assert(CRC32DATA1 == zip_entry_crc32(zip));
+  assert(0 == zip_entry_index(zip));
+
+  assert(0 == zip_entry_close(zip));
+
+  assert(0 == zip_entry_open(zip, "test/test-2.txt"));
+  assert(NULL != zip_entry_name(zip));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-2.txt"));
+  assert(strlen(TESTDATA2) == zip_entry_size(zip));
+  assert(CRC32DATA2 == zip_entry_crc32(zip));
+  assert(1 == zip_entry_index(zip));
+
+  assert(0 == zip_entry_close(zip));
+
+  zip_close(zip);
+}
+
+static void test_entry_index(void) {
+  struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
+  assert(zip != NULL);
+
+  assert(0 == zip_entry_open(zip, "test\\test-1.txt"));
+  assert(0 == zip_entry_index(zip));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-1.txt"));
+  assert(strlen(TESTDATA1) == zip_entry_size(zip));
+  assert(CRC32DATA1 == zip_entry_crc32(zip));
+  assert(0 == zip_entry_close(zip));
+
+  assert(0 == zip_entry_open(zip, "test/test-2.txt"));
+  assert(1 == zip_entry_index(zip));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-2.txt"));
+  assert(strlen(TESTDATA2) == zip_entry_size(zip));
+  assert(CRC32DATA2 == zip_entry_crc32(zip));
+  assert(0 == zip_entry_close(zip));
 
-    struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
-    assert(zip != NULL);
+  zip_close(zip);
+}
+
+static void test_entry_openbyindex(void) {
+  struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
+  assert(zip != NULL);
+
+  assert(0 == zip_entry_openbyindex(zip, 1));
+  assert(1 == zip_entry_index(zip));
+  assert(strlen(TESTDATA2) == zip_entry_size(zip));
+  assert(CRC32DATA2 == zip_entry_crc32(zip));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-2.txt"));
+  assert(0 == zip_entry_close(zip));
+
+  assert(0 == zip_entry_openbyindex(zip, 0));
+  assert(0 == zip_entry_index(zip));
+  assert(strlen(TESTDATA1) == zip_entry_size(zip));
+  assert(CRC32DATA1 == zip_entry_crc32(zip));
+  assert(0 == strcmp(zip_entry_name(zip), "test/test-1.txt"));
+  assert(0 == zip_entry_close(zip));
+
+  zip_close(zip);
+}
 
-    assert(0 == zip_entry_open(zip, "test/test-1.txt"));
-    assert(0 == zip_entry_extract(zip, on_extract, &buf));
+static void test_list_entries(void) {
+  struct zip_t *zip = zip_open(ZIPNAME, 0, 'r');
+  assert(zip != NULL);
 
-    assert(buf.size == strlen(TESTDATA1));
-    assert(0 == strncmp(buf.data, TESTDATA1, buf.size));
+  int i = 0, n = zip_total_entries(zip);
+  for (; i < n; ++i) {
+    assert(0 == zip_entry_openbyindex(zip, i));
+    fprintf(stdout, "[%d]: %s", i, zip_entry_name(zip));
+    if (zip_entry_isdir(zip)) {
+      fprintf(stdout, " (DIR)");
+    }
+    fprintf(stdout, "\n");
     assert(0 == zip_entry_close(zip));
-    free(buf.data);
-    buf.data = NULL;
-    buf.size = 0;
+  }
 
-    zip_close(zip);
+  zip_close(zip);
+}
+
+static void test_fwrite(void) {
+  const char *filename = WFILE;
+  FILE *stream = NULL;
+  struct zip_t *zip = NULL;
+#if defined(_MSC_VER)
+  if (0 != fopen_s(&stream, filename, "w+"))
+#else
+  if (!(stream = fopen(filename, "w+")))
+#endif
+  {
+    // Cannot open filename
+    fprintf(stdout, "Cannot open filename\n");
+    assert(0 == -1);
+  }
+  fwrite(TESTDATA1, sizeof(char), strlen(TESTDATA1), stream);
+  assert(0 == fclose(stream));
+
+  zip = zip_open(ZIPNAME, 9, 'w');
+  assert(zip != NULL);
+  assert(0 == zip_entry_open(zip, WFILE));
+  assert(0 == zip_entry_fwrite(zip, WFILE));
+  assert(0 == zip_entry_close(zip));
+
+  zip_close(zip);
+  remove(WFILE);
+  remove(ZIPNAME);
+}
+
+static void test_exe_permissions(void) {
+#if defined(_WIN32) || defined(__WIN32__)
+#else
+  struct MZ_FILE_STAT_STRUCT file_stats;
+  const char *filenames[] = {XFILE};
+  FILE *f = fopen(XFILE, "w");
+  fclose(f);
+  chmod(XFILE, XMODE);
+
+  remove(ZIPNAME);
+
+  assert(0 == zip_create(ZIPNAME, filenames, 1));
+
+  remove(XFILE);
+
+  assert(0 == zip_extract(ZIPNAME, ".", NULL, NULL));
+
+  assert(0 == MZ_FILE_STAT(XFILE, &file_stats));
+  assert(XMODE == file_stats.st_mode);
+
+  remove(XFILE);
+  remove(ZIPNAME);
+#endif
+}
+
+static void test_read_permissions(void) {
+#if defined(_MSC_VER)
+#else
+
+  struct MZ_FILE_STAT_STRUCT file_stats;
+  const char *filenames[] = {RFILE};
+  FILE *f = fopen(RFILE, "w");
+  fclose(f);
+  chmod(RFILE, RMODE);
+
+  remove(ZIPNAME);
+
+  assert(0 == zip_create(ZIPNAME, filenames, 1));
+
+  // chmod from 444 to 666 to be able delete the file on windows
+  chmod(RFILE, WMODE);
+  remove(RFILE);
+
+  assert(0 == zip_extract(ZIPNAME, ".", NULL, NULL));
+
+  assert(0 == MZ_FILE_STAT(RFILE, &file_stats));
+  assert(RMODE == file_stats.st_mode);
+
+  chmod(RFILE, WMODE);
+  remove(RFILE);
+  remove(ZIPNAME);
+#endif
+}
+
+static void test_write_permissions(void) {
+#if defined(_MSC_VER)
+#else
+
+  struct MZ_FILE_STAT_STRUCT file_stats;
+  const char *filenames[] = {WFILE};
+  FILE *f = fopen(WFILE, "w");
+  fclose(f);
+  chmod(WFILE, WMODE);
+
+  remove(ZIPNAME);
+
+  assert(0 == zip_create(ZIPNAME, filenames, 1));
+
+  remove(WFILE);
+
+  assert(0 == zip_extract(ZIPNAME, ".", NULL, NULL));
+
+  assert(0 == MZ_FILE_STAT(WFILE, &file_stats));
+  assert(WMODE == file_stats.st_mode);
+
+  remove(WFILE);
+  remove(ZIPNAME);
+#endif
+}
+
+static void test_mtime(void) {
+  struct MZ_FILE_STAT_STRUCT file_stat1, file_stat2;
+
+  const char *filename = WFILE;
+  FILE *stream = NULL;
+  struct zip_t *zip = NULL;
+#if defined(_MSC_VER)
+  if (0 != fopen_s(&stream, filename, "w+"))
+#else
+  if (!(stream = fopen(filename, "w+")))
+#endif
+  {
+    // Cannot open filename
+    fprintf(stdout, "Cannot open filename\n");
+    assert(0 == -1);
+  }
+  fwrite(TESTDATA1, sizeof(char), strlen(TESTDATA1), stream);
+  assert(0 == fclose(stream));
+
+  memset(&file_stat1, 0, sizeof(file_stat1));
+  memset(&file_stat2, 0, sizeof(file_stat2));
+  zip = zip_open(ZIPNAME, ZIP_DEFAULT_COMPRESSION_LEVEL, 'w');
+  assert(zip != NULL);
+  assert(0 == zip_entry_open(zip, filename));
+  assert(0 == zip_entry_fwrite(zip, filename));
+  assert(0 == zip_entry_close(zip));
+  zip_close(zip);
+
+  assert(0 == MZ_FILE_STAT(filename, &file_stat1));
+
+  remove(filename);
+  assert(0 == zip_extract(ZIPNAME, ".", NULL, NULL));
+  assert(0 == MZ_FILE_STAT(filename, &file_stat2));
+  fprintf(stdout, "file_stat1.st_mtime: %lu\n", file_stat1.st_mtime);
+  fprintf(stdout, "file_stat2.st_mtime: %lu\n", file_stat2.st_mtime);
+  assert(labs(file_stat1.st_mtime - file_stat2.st_mtime) <= 1);
+
+  remove(filename);
+  remove(ZIPNAME);
 }
 
 int main(int argc, char *argv[]) {
-    test_write();
-    test_append();
-    test_read();
-    test_extract();
+  UNUSED(argc);
+  UNUSED(argv);
+
+  remove(ZIPNAME);
+
+  test_write();
+  test_append();
+  test_read();
+  test_extract();
+  test_total_entries();
+  test_entry_name();
+  test_entry_index();
+  test_entry_openbyindex();
+  test_list_entries();
+  test_fwrite();
+  test_read_permissions();
+  test_write_permissions();
+  test_exe_permissions();
+  test_mtime();
 
-    return remove(ZIPNAME);
+  remove(ZIPNAME);
+  return 0;
 }

contrib/zip/test/test_miniz.c

@@ -0,0 +1,104 @@
+// Demonstrates miniz.c's compress() and uncompress() functions
+// (same as zlib's). Public domain, May 15 2011, Rich Geldreich,
+// [email protected]. See "unlicense" statement at the end of tinfl.c.
+
+#include <miniz.h>
+#include <stdio.h>
+
+typedef unsigned char uint8;
+typedef unsigned short uint16;
+typedef unsigned int uint;
+
+// The string to compress.
+static const char *s_pStr =
+    "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson."
+    "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson."
+    "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson."
+    "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson."
+    "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson."
+    "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson."
+    "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson.";
+
+int main(int argc, char *argv[]) {
+  uint step = 0;
+  int cmp_status;
+  uLong src_len = (uLong)strlen(s_pStr);
+  uLong cmp_len = compressBound(src_len);
+  uLong uncomp_len = src_len;
+  uint8 *pCmp, *pUncomp;
+  uint total_succeeded = 0;
+  (void)argc, (void)argv;
+
+  printf("miniz.c version: %s\n", MZ_VERSION);
+
+  do {
+    // Allocate buffers to hold compressed and uncompressed data.
+    pCmp = (mz_uint8 *)malloc((size_t)cmp_len);
+    pUncomp = (mz_uint8 *)malloc((size_t)src_len);
+    if ((!pCmp) || (!pUncomp)) {
+      printf("Out of memory!\n");
+      return EXIT_FAILURE;
+    }
+
+    // Compress the string.
+    cmp_status =
+        compress(pCmp, &cmp_len, (const unsigned char *)s_pStr, src_len);
+    if (cmp_status != Z_OK) {
+      printf("compress() failed!\n");
+      free(pCmp);
+      free(pUncomp);
+      return EXIT_FAILURE;
+    }
+
+    printf("Compressed from %u to %u bytes\n", (mz_uint32)src_len,
+           (mz_uint32)cmp_len);
+
+    if (step) {
+      // Purposely corrupt the compressed data if fuzzy testing (this is a
+      // very crude fuzzy test).
+      uint n = 1 + (rand() % 3);
+      while (n--) {
+        uint i = rand() % cmp_len;
+        pCmp[i] ^= (rand() & 0xFF);
+      }
+    }
+
+    // Decompress.
+    cmp_status = uncompress(pUncomp, &uncomp_len, pCmp, cmp_len);
+    total_succeeded += (cmp_status == Z_OK);
+
+    if (step) {
+      printf("Simple fuzzy test: step %u total_succeeded: %u\n", step,
+             total_succeeded);
+    } else {
+      if (cmp_status != Z_OK) {
+        printf("uncompress failed!\n");
+        free(pCmp);
+        free(pUncomp);
+        return EXIT_FAILURE;
+      }
+
+      printf("Decompressed from %u to %u bytes\n", (mz_uint32)cmp_len,
+             (mz_uint32)uncomp_len);
+
+      // Ensure uncompress() returned the expected data.
+      if ((uncomp_len != src_len) ||
+          (memcmp(pUncomp, s_pStr, (size_t)src_len))) {
+        printf("Decompression failed!\n");
+        free(pCmp);
+        free(pUncomp);
+        return EXIT_FAILURE;
+      }
+    }
+
+    free(pCmp);
+    free(pUncomp);
+
+    step++;
+
+    // Keep on fuzzy testing if there's a non-empty command line.
+  } while (argc >= 2);
+
+  printf("Success.\n");
+  return EXIT_SUCCESS;
+}