Pub.NFD. Initial Import.

nfd.mod/nativefiledialog/LICENSE

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+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+

nfd.mod/nativefiledialog/README.md

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+# Native File Dialog #
+
+A tiny, neat C library that portably invokes native file open, folder select and save dialogs.  Write dialog code once and have it pop up native dialogs on all supported platforms.  Avoid linking large dependencies like wxWidgets and qt.
+
+Features:
+
+ - Lean C API, static library -- no ObjC, no C++, no STL.
+ - Zlib licensed.
+ - Consistent UTF-8 support on all platforms.
+ - Simple universal file filter syntax.
+ - Paid support available.
+ - Multiple file selection support.
+ - 64-bit and 32-bit friendly.
+ - GCC, Clang, Xcode, Mingw and Visual Studio supported.
+ - No third party dependencies for building or linking.
+ - Support for Vista's modern `IFileDialog` on Windows.
+ - Support for non-deprecated Cocoa APIs on OS X.
+ - GTK3 dialog on Linux.
+ - Optional Zenity support on Linux to avoid linking GTK.
+ - Tested, works alongside [http://www.libsdl.org](SDL2) on all platforms, for the game developers out there.
+
+# Example Usage #
+
+```C
+#include <nfd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main( void )
+{
+    nfdchar_t *outPath = NULL;
+    nfdresult_t result = NFD_OpenDialog( NULL, NULL, &outPath );
+        
+    if ( result == NFD_OKAY ) {
+        puts("Success!");
+        puts(outPath);
+        free(outPath);
+    }
+    else if ( result == NFD_CANCEL ) {
+        puts("User pressed cancel.");
+    }
+    else {
+        printf("Error: %s\n", NFD_GetError() );
+    }
+
+    return 0;
+}
+```
+
+See self-documenting API [NFD.h](src/include/nfd.h) for more options.
+
+# Screenshots #
+
+![Windows rendering a dialog](screens/open_win.png?raw=true)
+![GTK3 on Linux rendering a dialog](screens/open_gtk3.png?raw=true)
+![Cocoa on MacOS rendering a dialog](screens/open_cocoa.png?raw=true)
+
+## Changelog ##
+
+ - **Major** version increments denote API or ABI departure.
+ - **Minor** version increments denote build or trivial departures.
+ - **Micro** version increments just recompile and drop-in.
+
+release | what's new                  | date
+--------|-----------------------------|---------
+1.0.0   | initial                     | oct 2014
+1.1.0   | premake5; scons deprecated  | aug 2016
+1.1.1   | mingw support, build fixes  | aug 2016
+1.1.2   | test_pickfolder() added     | aug 2016
+1.1.3   | zenity linux backend added  | nov 2017
+<i></i> | fix char type in decls      | nov 2017
+1.1.4   | fix win32 memleaks          | dec 2018
+<i></i> | improve win32 errorhandling | dec 2018
+<i></i> | macos fix focus bug         | dec 2018
+1.1.5   | win32 fix com reinitialize  | aug 2019
+1.1.6   | fix osx filter bug          | aug 2019
+<i></i> | remove deprecated scons     | aug 2019
+<i></i> | fix mingw compilation       | aug 2019
+<i></i> | -Wextra warning cleanup     | aug 2019
+
+## Building ##
+
+NFD uses [Premake5](https://premake.github.io/download.html) generated Makefiles and IDE project files.  The generated project files are checked in under `build/` so you don't have to download and use Premake in most cases.
+
+If you need to run Premake5 directly, further [build documentation](docs/build.md) is available.
+
+Previously, NFD used SCons to build.  As of 1.1.6, SCons support has been removed entirely.
+
+`nfd.a` will be built for release builds, and `nfd_d.a` will be built for debug builds.
+
+### Makefiles ###
+
+The makefile offers up to four options, with `release_x64` as the default.
+
+    make config=release_x86
+    make config=release_x64
+    make config=debug_x86
+    make config=debug_x64
+
+### Compiling Your Programs ###
+
+ 1. Add `src/include` to your include search path.
+ 2. Add `nfd.lib` or `nfd_d.lib` to the list of list of static libraries to link against (for release or debug, respectively).
+ 3. Add `build/<debug|release>/<arch>` to the library search path.
+
+#### Linux GTK ####
+
+`apt-get libgtk-3-dev` installs the gtk dependency for library compilation.
+
+On Linux, you have the option of compiling and linking against GTK.  If you use it, the recommended way to compile is to include the arguments of `pkg-config --cflags --libs gtk+-3.0`.
+
+#### Linux Zenity ####
+
+Alternatively, you can use the Zenity backend by running the Makefile in `build/gmake_linux_zenity`.  Zenity runs the dialog in its own address space, but requires the user to have Zenity correctly installed and configured on their system.
+
+#### MacOS ####
+
+On Mac OS, add `AppKit` to the list of frameworks.
+
+#### Windows ####
+
+On Windows, ensure you are linking against `comctl32.lib`.
+
+## Usage ##
+
+See `NFD.h` for API calls.  See `tests/*.c` for example code.
+
+After compiling, `build/bin` contains compiled test programs.  The appropriate subdirectory under `build/lib` contains the built library.
+
+## File Filter Syntax ##
+
+There is a form of file filtering in every file dialog API, but no consistent means of supporting it.  NFD provides support for filtering files by groups of extensions, providing its own descriptions (where applicable) for the extensions.
+
+A wildcard filter is always added to every dialog.
+
+### Separators ###
+
+ - `;` Begin a new filter.
+ - `,` Add a separate type to the filter.
+
+#### Examples ####
+
+`txt` The default filter is for text files.  There is a wildcard option in a dropdown.
+
+`png,jpg;psd` The default filter is for png and jpg files.  A second filter is available for psd files.  There is a wildcard option in a dropdown.
+
+`NULL` Wildcard only.
+
+## Iterating Over PathSets ##
+
+See [test_opendialogmultiple.c](test/test_opendialogmultiple.c).
+
+# Known Limitations #
+
+I accept quality code patches, or will resolve these and other matters through support.  See [contributing](docs/contributing.md) for details.
+
+ - No support for Windows XP's legacy dialogs such as `GetOpenFileName`.
+ - No support for file filter names -- ex: "Image Files" (*.png, *.jpg).  Nameless filters are supported, however.
+ - GTK Zenity implementation's process exec error handling does not gracefully handle numerous error cases, choosing to abort rather than cleanup and return.
+ - GTK 3 spams one warning per dialog created.
+
+# Copyright and Credit #
+
+Copyright &copy; 2014-2019 [Frogtoss Games](http://www.frogtoss.com), Inc.
+File [LICENSE](LICENSE) covers all files in this repo.
+
+Native File Dialog by Michael Labbe
+<[email protected]>
+
+Tomasz Konojacki for [microutf8](http://puszcza.gnu.org.ua/software/microutf8/)
+
+[Denis Kolodin](https://github.com/DenisKolodin) for mingw support.
+
+[Tom Mason](https://github.com/wheybags) for Zenity support.
+
+## Support ##
+
+Directed support for this work is available from the original author under a paid agreement.
+
+[Contact Frogtoss Games](http://www.frogtoss.com/pages/contact.html).

nfd.mod/nativefiledialog/src/common.h

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+/*
+  Native File Dialog
+
+  Internal, common across platforms
+
+  http://www.frogtoss.com/labs
+ */
+
+
+#ifndef _NFD_COMMON_H
+#define _NFD_COMMON_H
+
+#define NFD_MAX_STRLEN 256
+#define _NFD_UNUSED(x) ((void)x) 
+
+void *NFDi_Malloc( size_t bytes );
+void  NFDi_Free( void *ptr );
+void  NFDi_SetError( const char *msg );
+void  NFDi_SafeStrncpy( char *dst, const char *src, size_t maxCopy );
+
+#endif

nfd.mod/nativefiledialog/src/include/nfd.h

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+/*
+  Native File Dialog
+
+  User API
+
+  http://www.frogtoss.com/labs
+ */
+
+
+#ifndef _NFD_H
+#define _NFD_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+
+/* denotes UTF-8 char */
+typedef char nfdchar_t;
+
+/* opaque data structure -- see NFD_PathSet_* */
+typedef struct {
+    nfdchar_t *buf;
+    size_t *indices; /* byte offsets into buf */
+    size_t count;    /* number of indices into buf */
+}nfdpathset_t;
+
+typedef enum {
+    NFD_ERROR,       /* programmatic error */
+    NFD_OKAY,        /* user pressed okay, or successful return */
+    NFD_CANCEL       /* user pressed cancel */
+}nfdresult_t;
+    
+
+/* nfd_<targetplatform>.c */
+
+/* single file open dialog */    
+nfdresult_t NFD_OpenDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath );
+
+/* multiple file open dialog */    
+nfdresult_t NFD_OpenDialogMultiple( const nfdchar_t *filterList,
+                                    const nfdchar_t *defaultPath,
+                                    nfdpathset_t *outPaths );
+
+/* save dialog */
+nfdresult_t NFD_SaveDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath );
+
+
+/* select folder dialog */
+nfdresult_t NFD_PickFolder( const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath);
+
+/* nfd_common.c */
+
+/* get last error -- set when nfdresult_t returns NFD_ERROR */
+const char *NFD_GetError( void );
+/* get the number of entries stored in pathSet */
+size_t      NFD_PathSet_GetCount( const nfdpathset_t *pathSet );
+/* Get the UTF-8 path at offset index */
+nfdchar_t  *NFD_PathSet_GetPath( const nfdpathset_t *pathSet, size_t index );
+/* Free the pathSet */    
+void        NFD_PathSet_Free( nfdpathset_t *pathSet );
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

nfd.mod/nativefiledialog/src/nfd_cocoa.m

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+/*
+  Native File Dialog
+
+  http://www.frogtoss.com/labs
+ */
+
+#include <AppKit/AppKit.h>
+#include "nfd.h"
+#include "nfd_common.h"
+
+static NSArray *BuildAllowedFileTypes( const char *filterList )
+{
+    // Commas and semicolons are the same thing on this platform
+
+    NSMutableArray *buildFilterList = [[NSMutableArray alloc] init];
+
+    char typebuf[NFD_MAX_STRLEN] = {0};
+    
+    size_t filterListLen = strlen(filterList);
+    char *p_typebuf = typebuf;
+    for ( size_t i = 0; i < filterListLen+1; ++i )
+    {
+        if ( filterList[i] == ',' || filterList[i] == ';' || filterList[i] == '\0' )
+        {
+            if (filterList[i] != '\0')
+                ++p_typebuf;
+            *p_typebuf = '\0';
+
+            NSString *thisType = [NSString stringWithUTF8String: typebuf];
+            [buildFilterList addObject:thisType];
+            p_typebuf = typebuf;
+            *p_typebuf = '\0';
+        }
+        else
+        {
+            *p_typebuf = filterList[i];
+            ++p_typebuf;
+
+        }
+    }
+
+    NSArray *returnArray = [NSArray arrayWithArray:buildFilterList];
+
+    [buildFilterList release];
+    return returnArray;
+}
+
+static void AddFilterListToDialog( NSSavePanel *dialog, const char *filterList )
+{
+    if ( !filterList || strlen(filterList) == 0 )
+        return;
+
+    NSArray *allowedFileTypes = BuildAllowedFileTypes( filterList );
+    if ( [allowedFileTypes count] != 0 )
+    {
+        [dialog setAllowedFileTypes:allowedFileTypes];
+    }
+}
+
+static void SetDefaultPath( NSSavePanel *dialog, const nfdchar_t *defaultPath )
+{
+    if ( !defaultPath || strlen(defaultPath) == 0 )
+        return;
+
+    NSString *defaultPathString = [NSString stringWithUTF8String: defaultPath];
+    NSURL *url = [NSURL fileURLWithPath:defaultPathString isDirectory:YES];
+    [dialog setDirectoryURL:url];    
+}
+
+
+/* fixme: pathset should be pathSet */
+static nfdresult_t AllocPathSet( NSArray *urls, nfdpathset_t *pathset )
+{
+    assert(pathset);
+    assert([urls count]);
+
+    pathset->count = (size_t)[urls count];
+    pathset->indices = NFDi_Malloc( sizeof(size_t)*pathset->count );
+    if ( !pathset->indices ) 
+    {
+        return NFD_ERROR;
+    }
+
+    // count the total space needed for buf
+    size_t bufsize = 0;
+    for ( NSURL *url in urls )
+    {
+        NSString *path = [url path];
+        bufsize += [path lengthOfBytesUsingEncoding:NSUTF8StringEncoding] + 1;
+    }
+
+    pathset->buf = NFDi_Malloc( sizeof(nfdchar_t) * bufsize );
+    if ( !pathset->buf )
+    {
+        return NFD_ERROR;
+    }
+
+    // fill buf
+    nfdchar_t *p_buf = pathset->buf;
+    size_t count = 0;
+    for ( NSURL *url in urls )
+    {
+        NSString *path = [url path];
+        const nfdchar_t *utf8Path = [path UTF8String];
+        size_t byteLen = [path lengthOfBytesUsingEncoding:NSUTF8StringEncoding] + 1;
+        memcpy( p_buf, utf8Path, byteLen );
+
+        ptrdiff_t index = p_buf - pathset->buf;
+        assert( index >= 0 );
+        pathset->indices[count] = (size_t)index;
+
+        p_buf += byteLen;
+        ++count;
+    }
+
+    return NFD_OKAY;
+}
+
+/* public */
+
+
+nfdresult_t NFD_OpenDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+    NSWindow *keyWindow = [[NSApplication sharedApplication] keyWindow];    
+    NSOpenPanel *dialog = [NSOpenPanel openPanel];
+    [dialog setAllowsMultipleSelection:NO];
+
+    // Build the filter list
+    AddFilterListToDialog(dialog, filterList);
+
+    // Set the starting directory
+    SetDefaultPath(dialog, defaultPath);
+
+    nfdresult_t nfdResult = NFD_CANCEL;
+    if ( [dialog runModal] == NSModalResponseOK )
+    {
+        NSURL *url = [dialog URL];
+        const char *utf8Path = [[url path] UTF8String];
+
+        // byte count, not char count
+        size_t len = strlen(utf8Path);//NFDi_UTF8_Strlen(utf8Path);
+
+        *outPath = NFDi_Malloc( len+1 );
+        if ( !*outPath )
+        {
+            [pool release];
+            [keyWindow makeKeyAndOrderFront:nil];            
+            return NFD_ERROR;
+        }
+        memcpy( *outPath, utf8Path, len+1 ); /* copy null term */
+        nfdResult = NFD_OKAY;
+    }
+    [pool release];
+
+    [keyWindow makeKeyAndOrderFront:nil];
+    return nfdResult;
+}
+
+
+nfdresult_t NFD_OpenDialogMultiple( const nfdchar_t *filterList,
+                                    const nfdchar_t *defaultPath,
+                                    nfdpathset_t *outPaths )
+{
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    NSWindow *keyWindow = [[NSApplication sharedApplication] keyWindow];
+    
+    NSOpenPanel *dialog = [NSOpenPanel openPanel];
+    [dialog setAllowsMultipleSelection:YES];
+
+    // Build the fiter list.
+    AddFilterListToDialog(dialog, filterList);
+
+    // Set the starting directory
+    SetDefaultPath(dialog, defaultPath);
+    
+    nfdresult_t nfdResult = NFD_CANCEL;
+    if ( [dialog runModal] == NSModalResponseOK )
+    {
+        NSArray *urls = [dialog URLs];
+
+        if ( [urls count] == 0 )
+        {
+            [pool release];
+            [keyWindow makeKeyAndOrderFront:nil];            
+            return NFD_CANCEL;
+        }
+
+        if ( AllocPathSet( urls, outPaths ) == NFD_ERROR )
+        {
+            [pool release];
+            [keyWindow makeKeyAndOrderFront:nil];            
+            return NFD_ERROR;
+        }
+
+        nfdResult = NFD_OKAY;
+    }
+    [pool release];
+
+    [keyWindow makeKeyAndOrderFront:nil];    
+    return nfdResult;
+}
+
+
+nfdresult_t NFD_SaveDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    NSWindow *keyWindow = [[NSApplication sharedApplication] keyWindow];
+    
+    NSSavePanel *dialog = [NSSavePanel savePanel];
+    [dialog setExtensionHidden:NO];
+    
+    // Build the filter list.
+    AddFilterListToDialog(dialog, filterList);
+
+    // Set the starting directory
+    SetDefaultPath(dialog, defaultPath);
+
+    nfdresult_t nfdResult = NFD_CANCEL;
+    if ( [dialog runModal] == NSModalResponseOK )
+    {
+        NSURL *url = [dialog URL];
+        const char *utf8Path = [[url path] UTF8String];
+
+        size_t byteLen = [url.path lengthOfBytesUsingEncoding:NSUTF8StringEncoding] + 1;
+        
+        *outPath = NFDi_Malloc( byteLen );
+        if ( !*outPath )
+        {
+            [pool release];
+            [keyWindow makeKeyAndOrderFront:nil];            
+            return NFD_ERROR;
+        }
+        memcpy( *outPath, utf8Path, byteLen );
+        nfdResult = NFD_OKAY;
+    }
+
+    [pool release];
+    [keyWindow makeKeyAndOrderFront:nil];
+    return nfdResult;
+}
+
+nfdresult_t NFD_PickFolder(const nfdchar_t *defaultPath,
+    nfdchar_t **outPath)
+{
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+    NSWindow *keyWindow = [[NSApplication sharedApplication] keyWindow];
+    NSOpenPanel *dialog = [NSOpenPanel openPanel];
+    [dialog setAllowsMultipleSelection:NO];
+    [dialog setCanChooseDirectories:YES];
+    [dialog setCanCreateDirectories:YES];
+    [dialog setCanChooseFiles:NO];
+
+    // Set the starting directory
+    SetDefaultPath(dialog, defaultPath);
+
+    nfdresult_t nfdResult = NFD_CANCEL;
+    if ( [dialog runModal] == NSModalResponseOK )
+    {
+        NSURL *url = [dialog URL];
+        const char *utf8Path = [[url path] UTF8String];
+
+        // byte count, not char count
+        size_t len = strlen(utf8Path);//NFDi_UTF8_Strlen(utf8Path);
+
+        *outPath = NFDi_Malloc( len+1 );
+        if ( !*outPath )
+        {
+            [pool release];
+            [keyWindow makeKeyAndOrderFront:nil];            
+            return NFD_ERROR;
+        }
+        memcpy( *outPath, utf8Path, len+1 ); /* copy null term */
+        nfdResult = NFD_OKAY;
+    }
+    [pool release];
+
+    [keyWindow makeKeyAndOrderFront:nil];
+    return nfdResult;
+}

nfd.mod/nativefiledialog/src/nfd_common.c

@@ -0,0 +1,142 @@
+/*
+  Native File Dialog
+
+  http://www.frogtoss.com/labs
+ */
+
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include "nfd_common.h"
+
+static char g_errorstr[NFD_MAX_STRLEN] = {0};
+
+/* public routines */
+
+const char *NFD_GetError( void )
+{
+    return g_errorstr;
+}
+
+size_t NFD_PathSet_GetCount( const nfdpathset_t *pathset )
+{
+    assert(pathset);
+    return pathset->count;
+}
+
+nfdchar_t *NFD_PathSet_GetPath( const nfdpathset_t *pathset, size_t num )
+{
+    assert(pathset);
+    assert(num < pathset->count);
+    
+    return pathset->buf + pathset->indices[num];
+}
+
+void NFD_PathSet_Free( nfdpathset_t *pathset )
+{
+    assert(pathset);
+    NFDi_Free( pathset->indices );
+    NFDi_Free( pathset->buf );
+}
+
+/* internal routines */
+
+void *NFDi_Malloc( size_t bytes )
+{
+    void *ptr = malloc(bytes);
+    if ( !ptr )
+        NFDi_SetError("NFDi_Malloc failed.");
+
+    return ptr;
+}
+
+void NFDi_Free( void *ptr )
+{
+    assert(ptr);
+    free(ptr);
+}
+
+void NFDi_SetError( const char *msg )
+{
+    int bTruncate = NFDi_SafeStrncpy( g_errorstr, msg, NFD_MAX_STRLEN );
+    assert( !bTruncate );  _NFD_UNUSED(bTruncate);
+}
+
+
+int NFDi_SafeStrncpy( char *dst, const char *src, size_t maxCopy )
+{
+    size_t n = maxCopy;
+    char *d = dst;
+
+    assert( src );
+    assert( dst );
+    
+    while ( n > 0 && *src != '\0' )    
+    {
+        *d++ = *src++;
+        --n;
+    }
+
+    /* Truncation case -
+       terminate string and return true */
+    if ( n == 0 )
+    {
+        dst[maxCopy-1] = '\0';
+        return 1;
+    }
+
+    /* No truncation.  Append a single NULL and return. */
+    *d = '\0';
+    return 0;
+}
+
+
+/* adapted from microutf8 */
+int32_t NFDi_UTF8_Strlen( const nfdchar_t *str )
+{
+	/* This function doesn't properly check validity of UTF-8 character 
+	sequence, it is supposed to use only with valid UTF-8 strings. */
+    
+	int32_t character_count = 0;
+	int32_t i = 0; /* Counter used to iterate over string. */
+	nfdchar_t maybe_bom[4];
+	
+	/* If there is UTF-8 BOM ignore it. */
+	if (strlen(str) > 2)
+	{
+		strncpy(maybe_bom, str, 3);
+		maybe_bom[3] = 0;
+		if (strcmp(maybe_bom, (nfdchar_t*)NFD_UTF8_BOM) == 0)
+			i += 3;
+	}
+	
+	while(str[i])
+	{
+		if (str[i] >> 7 == 0)
+        {
+            /* If bit pattern begins with 0 we have ascii character. */ 
+			++character_count;
+        }
+		else if (str[i] >> 6 == 3)
+        {
+		/* If bit pattern begins with 11 it is beginning of UTF-8 byte sequence. */
+			++character_count;
+        }
+		else if (str[i] >> 6 == 2)
+			;		/* If bit pattern begins with 10 it is middle of utf-8 byte sequence. */
+		else
+        {
+            /* In any other case this is not valid UTF-8. */
+			return -1;
+        }
+		++i;
+	}
+
+	return character_count;	
+}
+
+int NFDi_IsFilterSegmentChar( char ch )
+{
+    return (ch==','||ch==';'||ch=='\0');
+}
+

nfd.mod/nativefiledialog/src/nfd_common.h

@@ -0,0 +1,39 @@
+/*
+  Native File Dialog
+
+  Internal, common across platforms
+
+  http://www.frogtoss.com/labs
+ */
+
+
+#ifndef _NFD_COMMON_H
+#define _NFD_COMMON_H
+
+#include "nfd.h"
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NFD_MAX_STRLEN 256
+#define _NFD_UNUSED(x) ((void)x)
+
+#define NFD_UTF8_BOM "\xEF\xBB\xBF"
+
+
+void  *NFDi_Malloc( size_t bytes );
+void   NFDi_Free( void *ptr );
+void   NFDi_SetError( const char *msg );
+int    NFDi_SafeStrncpy( char *dst, const char *src, size_t maxCopy );
+int32_t NFDi_UTF8_Strlen( const nfdchar_t *str );
+int    NFDi_IsFilterSegmentChar( char ch );
+    
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif

nfd.mod/nativefiledialog/src/nfd_gtk.c

@@ -0,0 +1,379 @@
+/*
+  Native File Dialog
+
+  http://www.frogtoss.com/labs
+*/
+
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+#include <gtk/gtk.h>
+#include "nfd.h"
+#include "nfd_common.h"
+
+
+const char INIT_FAIL_MSG[] = "gtk_init_check failed to initilaize GTK+";
+
+
+static void AddTypeToFilterName( const char *typebuf, char *filterName, size_t bufsize )
+{
+    const char SEP[] = ", ";
+
+    size_t len = strlen(filterName);
+    if ( len != 0 )
+    {
+        strncat( filterName, SEP, bufsize - len - 1 );
+        len += strlen(SEP);
+    }
+    
+    strncat( filterName, typebuf, bufsize - len - 1 );
+}
+
+static void AddFiltersToDialog( GtkWidget *dialog, const char *filterList )
+{
+    GtkFileFilter *filter;
+    char typebuf[NFD_MAX_STRLEN] = {0};
+    const char *p_filterList = filterList;
+    char *p_typebuf = typebuf;
+    char filterName[NFD_MAX_STRLEN] = {0};
+    
+    if ( !filterList || strlen(filterList) == 0 )
+        return;
+
+    filter = gtk_file_filter_new();
+    while ( 1 )
+    {
+        
+        if ( NFDi_IsFilterSegmentChar(*p_filterList) )
+        {
+            char typebufWildcard[NFD_MAX_STRLEN];
+            /* add another type to the filter */
+            assert( strlen(typebuf) > 0 );
+            assert( strlen(typebuf) < NFD_MAX_STRLEN-1 );
+            
+            snprintf( typebufWildcard, NFD_MAX_STRLEN, "*.%s", typebuf );
+            AddTypeToFilterName( typebuf, filterName, NFD_MAX_STRLEN );
+            
+            gtk_file_filter_add_pattern( filter, typebufWildcard );
+            
+            p_typebuf = typebuf;
+            memset( typebuf, 0, sizeof(char) * NFD_MAX_STRLEN );
+        }
+        
+        if ( *p_filterList == ';' || *p_filterList == '\0' )
+        {
+            /* end of filter -- add it to the dialog */
+            
+            gtk_file_filter_set_name( filter, filterName );
+            gtk_file_chooser_add_filter( GTK_FILE_CHOOSER(dialog), filter );
+
+            filterName[0] = '\0';
+
+            if ( *p_filterList == '\0' )
+                break;
+
+            filter = gtk_file_filter_new();            
+        }
+
+        if ( !NFDi_IsFilterSegmentChar( *p_filterList ) )
+        {
+            *p_typebuf = *p_filterList;
+            p_typebuf++;
+        }
+
+        p_filterList++;
+    }
+    
+    /* always append a wildcard option to the end*/
+
+    filter = gtk_file_filter_new();
+    gtk_file_filter_set_name( filter, "*.*" );
+    gtk_file_filter_add_pattern( filter, "*" );
+    gtk_file_chooser_add_filter( GTK_FILE_CHOOSER(dialog), filter );
+}
+
+static void SetDefaultPath( GtkWidget *dialog, const char *defaultPath )
+{
+    if ( !defaultPath || strlen(defaultPath) == 0 )
+        return;
+
+    /* GTK+ manual recommends not specifically setting the default path.
+       We do it anyway in order to be consistent across platforms.
+
+       If consistency with the native OS is preferred, this is the line
+       to comment out. -ml */
+    gtk_file_chooser_set_current_folder( GTK_FILE_CHOOSER(dialog), defaultPath );
+}
+
+static nfdresult_t AllocPathSet( GSList *fileList, nfdpathset_t *pathSet )
+{
+    size_t bufSize = 0;
+    GSList *node;
+    nfdchar_t *p_buf;
+    size_t count = 0;
+    
+    assert(fileList);
+    assert(pathSet);
+
+    pathSet->count = (size_t)g_slist_length( fileList );
+    assert( pathSet->count > 0 );
+
+    pathSet->indices = NFDi_Malloc( sizeof(size_t)*pathSet->count );
+    if ( !pathSet->indices )
+    {
+        return NFD_ERROR;
+    }
+
+    /* count the total space needed for buf */
+    for ( node = fileList; node; node = node->next )
+    {
+        assert(node->data);
+        bufSize += strlen( (const gchar*)node->data ) + 1;
+    }
+
+    pathSet->buf = NFDi_Malloc( sizeof(nfdchar_t) * bufSize );
+
+    /* fill buf */
+    p_buf = pathSet->buf;
+    for ( node = fileList; node; node = node->next )
+    {
+        nfdchar_t *path = (nfdchar_t*)(node->data);
+        size_t byteLen = strlen(path)+1;
+        ptrdiff_t index;
+        
+        memcpy( p_buf, path, byteLen );
+        g_free(node->data);
+
+        index = p_buf - pathSet->buf;
+        assert( index >= 0 );
+        pathSet->indices[count] = (size_t)index;
+
+        p_buf += byteLen;
+        ++count;
+    }
+
+    g_slist_free( fileList );
+    
+    return NFD_OKAY;
+}
+
+static void WaitForCleanup(void)
+{
+    while (gtk_events_pending())
+        gtk_main_iteration();
+}
+                                 
+/* public */
+
+nfdresult_t NFD_OpenDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{    
+    GtkWidget *dialog;
+    nfdresult_t result;
+
+    if ( !gtk_init_check( NULL, NULL ) )
+    {
+        NFDi_SetError(INIT_FAIL_MSG);
+        return NFD_ERROR;
+    }
+
+    dialog = gtk_file_chooser_dialog_new( "Open File",
+                                          NULL,
+                                          GTK_FILE_CHOOSER_ACTION_OPEN,
+                                          "_Cancel", GTK_RESPONSE_CANCEL,
+                                          "_Open", GTK_RESPONSE_ACCEPT,
+                                          NULL );
+
+    /* Build the filter list */
+    AddFiltersToDialog(dialog, filterList);
+
+    /* Set the default path */
+    SetDefaultPath(dialog, defaultPath);
+
+    result = NFD_CANCEL;
+    if ( gtk_dialog_run( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
+    {
+        char *filename;
+
+        filename = gtk_file_chooser_get_filename( GTK_FILE_CHOOSER(dialog) );
+
+        {
+            size_t len = strlen(filename);
+            *outPath = NFDi_Malloc( len + 1 );
+            memcpy( *outPath, filename, len + 1 );
+            if ( !*outPath )
+            {
+                g_free( filename );
+                gtk_widget_destroy(dialog);
+                return NFD_ERROR;
+            }
+        }
+        g_free( filename );
+
+        result = NFD_OKAY;
+    }
+
+    WaitForCleanup();
+    gtk_widget_destroy(dialog);
+    WaitForCleanup();
+
+    return result;
+}
+
+
+nfdresult_t NFD_OpenDialogMultiple( const nfdchar_t *filterList,
+                                    const nfdchar_t *defaultPath,
+                                    nfdpathset_t *outPaths )
+{
+    GtkWidget *dialog;
+    nfdresult_t result;
+
+    if ( !gtk_init_check( NULL, NULL ) )
+    {
+        NFDi_SetError(INIT_FAIL_MSG);
+        return NFD_ERROR;
+    }
+
+    dialog = gtk_file_chooser_dialog_new( "Open Files",
+                                          NULL,
+                                          GTK_FILE_CHOOSER_ACTION_OPEN,
+                                          "_Cancel", GTK_RESPONSE_CANCEL,
+                                          "_Open", GTK_RESPONSE_ACCEPT,
+                                          NULL );
+    gtk_file_chooser_set_select_multiple( GTK_FILE_CHOOSER(dialog), TRUE );
+
+    /* Build the filter list */
+    AddFiltersToDialog(dialog, filterList);
+
+    /* Set the default path */
+    SetDefaultPath(dialog, defaultPath);
+
+    result = NFD_CANCEL;
+    if ( gtk_dialog_run( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
+    {
+        GSList *fileList = gtk_file_chooser_get_filenames( GTK_FILE_CHOOSER(dialog) );
+        if ( AllocPathSet( fileList, outPaths ) == NFD_ERROR )
+        {
+            gtk_widget_destroy(dialog);
+            return NFD_ERROR;
+        }
+        
+        result = NFD_OKAY;
+    }
+
+    WaitForCleanup();
+    gtk_widget_destroy(dialog);
+    WaitForCleanup();
+
+    return result;
+}
+
+nfdresult_t NFD_SaveDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{
+    GtkWidget *dialog;
+    nfdresult_t result;
+
+    if ( !gtk_init_check( NULL, NULL ) )
+    {
+        NFDi_SetError(INIT_FAIL_MSG);
+        return NFD_ERROR;
+    }
+
+    dialog = gtk_file_chooser_dialog_new( "Save File",
+                                          NULL,
+                                          GTK_FILE_CHOOSER_ACTION_SAVE,
+                                          "_Cancel", GTK_RESPONSE_CANCEL,
+                                          "_Save", GTK_RESPONSE_ACCEPT,
+                                          NULL ); 
+    gtk_file_chooser_set_do_overwrite_confirmation( GTK_FILE_CHOOSER(dialog), TRUE );
+
+    /* Build the filter list */    
+    AddFiltersToDialog(dialog, filterList);
+
+    /* Set the default path */
+    SetDefaultPath(dialog, defaultPath);
+    
+    result = NFD_CANCEL;    
+    if ( gtk_dialog_run( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
+    {
+        char *filename;
+        filename = gtk_file_chooser_get_filename( GTK_FILE_CHOOSER(dialog) );
+        
+        {
+            size_t len = strlen(filename);
+            *outPath = NFDi_Malloc( len + 1 );
+            memcpy( *outPath, filename, len + 1 );
+            if ( !*outPath )
+            {
+                g_free( filename );
+                gtk_widget_destroy(dialog);
+                return NFD_ERROR;
+            }
+        }
+        g_free(filename);
+
+        result = NFD_OKAY;
+    }
+
+    WaitForCleanup();
+    gtk_widget_destroy(dialog);
+    WaitForCleanup();
+    
+    return result;
+}
+
+nfdresult_t NFD_PickFolder(const nfdchar_t *defaultPath,
+    nfdchar_t **outPath)
+{
+    GtkWidget *dialog;
+    nfdresult_t result;
+
+    if (!gtk_init_check(NULL, NULL))
+    {
+        NFDi_SetError(INIT_FAIL_MSG);
+        return NFD_ERROR;
+    }
+
+    dialog = gtk_file_chooser_dialog_new( "Select folder",
+                                          NULL,
+                                          GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER,
+                                          "_Cancel", GTK_RESPONSE_CANCEL,
+                                          "_Select", GTK_RESPONSE_ACCEPT,
+                                          NULL ); 
+    gtk_file_chooser_set_do_overwrite_confirmation( GTK_FILE_CHOOSER(dialog), TRUE );
+
+
+    /* Set the default path */
+    SetDefaultPath(dialog, defaultPath);
+    
+    result = NFD_CANCEL;    
+    if ( gtk_dialog_run( GTK_DIALOG(dialog) ) == GTK_RESPONSE_ACCEPT )
+    {
+        char *filename;
+        filename = gtk_file_chooser_get_filename( GTK_FILE_CHOOSER(dialog) );
+        
+        {
+            size_t len = strlen(filename);
+            *outPath = NFDi_Malloc( len + 1 );
+            memcpy( *outPath, filename, len + 1 );
+            if ( !*outPath )
+            {
+                g_free( filename );
+                gtk_widget_destroy(dialog);
+                return NFD_ERROR;
+            }
+        }
+        g_free(filename);
+
+        result = NFD_OKAY;
+    }
+
+    WaitForCleanup();
+    gtk_widget_destroy(dialog);
+    WaitForCleanup();
+    
+    return result;
+}

nfd.mod/nativefiledialog/src/nfd_win.cpp

@@ -0,0 +1,762 @@
+/*
+  Native File Dialog
+
+  http://www.frogtoss.com/labs
+ */
+
+
+#ifdef __MINGW32__
+// Explicitly setting NTDDI version, this is necessary for the MinGW compiler
+#define NTDDI_VERSION NTDDI_VISTA
+#define _WIN32_WINNT _WIN32_WINNT_VISTA
+#endif
+
+#define _CRTDBG_MAP_ALLOC
+#include <stdlib.h>
+#include <crtdbg.h>
+
+/* only locally define UNICODE in this compilation unit */
+#ifndef UNICODE
+#define UNICODE
+#endif
+
+#include <wchar.h>
+#include <stdio.h>
+#include <assert.h>
+#include <windows.h>
+#include <shobjidl.h>
+#include "nfd_common.h"
+
+
+#define COM_INITFLAGS ::COINIT_APARTMENTTHREADED | ::COINIT_DISABLE_OLE1DDE
+
+static BOOL COMIsInitialized(HRESULT coResult)
+{
+    if (coResult == RPC_E_CHANGED_MODE)
+    {
+        // If COM was previously initialized with different init flags,
+        // NFD still needs to operate. Eat this warning.
+        return TRUE;
+    }
+
+    return SUCCEEDED(coResult);
+}
+
+static HRESULT COMInit(void)
+{
+    return ::CoInitializeEx(NULL, COM_INITFLAGS);
+}
+
+static void COMUninit(HRESULT coResult)
+{
+    // do not uninitialize if RPC_E_CHANGED_MODE occurred -- this
+    // case does not refcount COM.
+    if (SUCCEEDED(coResult))
+        ::CoUninitialize();
+}
+
+// allocs the space in outPath -- call free()
+static void CopyWCharToNFDChar( const wchar_t *inStr, nfdchar_t **outStr )
+{
+    int inStrCharacterCount = static_cast<int>(wcslen(inStr)); 
+    int bytesNeeded = WideCharToMultiByte( CP_UTF8, 0,
+                                           inStr, inStrCharacterCount,
+                                           NULL, 0, NULL, NULL );    
+    assert( bytesNeeded );
+    bytesNeeded += 1;
+
+    *outStr = (nfdchar_t*)NFDi_Malloc( bytesNeeded );
+    if ( !*outStr )
+        return;
+
+    int bytesWritten = WideCharToMultiByte( CP_UTF8, 0,
+                                            inStr, -1,
+                                            *outStr, bytesNeeded,
+                                            NULL, NULL );
+    assert( bytesWritten ); _NFD_UNUSED( bytesWritten );
+}
+
+/* includes NULL terminator byte in return */
+static size_t GetUTF8ByteCountForWChar( const wchar_t *str )
+{
+    size_t bytesNeeded = WideCharToMultiByte( CP_UTF8, 0,
+                                              str, -1,
+                                              NULL, 0, NULL, NULL );
+    assert( bytesNeeded );
+    return bytesNeeded+1;
+}
+
+// write to outPtr -- no free() necessary.
+static int CopyWCharToExistingNFDCharBuffer( const wchar_t *inStr, nfdchar_t *outPtr )
+{
+    int bytesNeeded = static_cast<int>(GetUTF8ByteCountForWChar( inStr ));
+
+    /* invocation copies null term */
+    int bytesWritten = WideCharToMultiByte( CP_UTF8, 0,
+                                            inStr, -1,
+                                            outPtr, bytesNeeded,
+                                            NULL, 0 );
+    assert( bytesWritten );
+
+    return bytesWritten;
+
+}
+
+
+// allocs the space in outStr -- call free()
+static void CopyNFDCharToWChar( const nfdchar_t *inStr, wchar_t **outStr )
+{
+    int inStrByteCount = static_cast<int>(strlen(inStr));
+    int charsNeeded = MultiByteToWideChar(CP_UTF8, 0,
+                                          inStr, inStrByteCount,
+                                          NULL, 0 );    
+    assert( charsNeeded );
+    assert( !*outStr );
+    charsNeeded += 1; // terminator
+    
+    *outStr = (wchar_t*)NFDi_Malloc( charsNeeded * sizeof(wchar_t) );    
+    if ( !*outStr )
+        return;        
+
+    int ret = MultiByteToWideChar(CP_UTF8, 0,
+                                  inStr, inStrByteCount,
+                                  *outStr, charsNeeded);
+    (*outStr)[charsNeeded-1] = '\0';
+
+#ifdef _DEBUG
+    int inStrCharacterCount = static_cast<int>(NFDi_UTF8_Strlen(inStr));
+    assert( ret == inStrCharacterCount );
+#else
+    _NFD_UNUSED(ret);
+#endif
+}
+
+
+/* ext is in format "jpg", no wildcards or separators */
+static int AppendExtensionToSpecBuf( const char *ext, char *specBuf, size_t specBufLen )
+{
+    const char SEP[] = ";";
+    assert( specBufLen > strlen(ext)+3 );
+    
+    if ( strlen(specBuf) > 0 )
+    {
+        strncat( specBuf, SEP, specBufLen - strlen(specBuf) - 1 );
+        specBufLen += strlen(SEP);
+    }
+
+    char extWildcard[NFD_MAX_STRLEN];
+    int bytesWritten = sprintf_s( extWildcard, NFD_MAX_STRLEN, "*.%s", ext );
+    assert( bytesWritten == (int)(strlen(ext)+2) );
+    _NFD_UNUSED(bytesWritten);
+    
+    strncat( specBuf, extWildcard, specBufLen - strlen(specBuf) - 1 );
+
+    return NFD_OKAY;
+}
+
+static nfdresult_t AddFiltersToDialog( ::IFileDialog *fileOpenDialog, const char *filterList )
+{
+    const wchar_t WILDCARD[] = L"*.*";
+
+    if ( !filterList || strlen(filterList) == 0 )
+        return NFD_OKAY;
+
+    // Count rows to alloc
+    UINT filterCount = 1; /* guaranteed to have one filter on a correct, non-empty parse */
+    const char *p_filterList;
+    for ( p_filterList = filterList; *p_filterList; ++p_filterList )
+    {
+        if ( *p_filterList == ';' )
+            ++filterCount;
+    }    
+
+    assert(filterCount);
+    if ( !filterCount )
+    {
+        NFDi_SetError("Error parsing filters.");
+        return NFD_ERROR;
+    }
+
+    /* filterCount plus 1 because we hardcode the *.* wildcard after the while loop */
+    COMDLG_FILTERSPEC *specList = (COMDLG_FILTERSPEC*)NFDi_Malloc( sizeof(COMDLG_FILTERSPEC) * ((size_t)filterCount + 1) );
+    if ( !specList )
+    {
+        return NFD_ERROR;
+    }
+    for (UINT i = 0; i < filterCount+1; ++i )
+    {
+        specList[i].pszName = NULL;
+        specList[i].pszSpec = NULL;
+    }
+
+    size_t specIdx = 0;
+    p_filterList = filterList;
+    char typebuf[NFD_MAX_STRLEN] = {0};  /* one per comma or semicolon */
+    char *p_typebuf = typebuf;
+
+    char specbuf[NFD_MAX_STRLEN] = {0}; /* one per semicolon */
+
+    while ( 1 ) 
+    {
+        if ( NFDi_IsFilterSegmentChar(*p_filterList) )
+        {
+            /* append a type to the specbuf (pending filter) */
+            AppendExtensionToSpecBuf( typebuf, specbuf, NFD_MAX_STRLEN );            
+
+            p_typebuf = typebuf;
+            memset( typebuf, 0, sizeof(char)*NFD_MAX_STRLEN );
+        }
+
+        if ( *p_filterList == ';' || *p_filterList == '\0' )
+        {
+            /* end of filter -- add it to specList */
+                                
+            CopyNFDCharToWChar( specbuf, (wchar_t**)&specList[specIdx].pszName );
+            CopyNFDCharToWChar( specbuf, (wchar_t**)&specList[specIdx].pszSpec );
+                        
+            memset( specbuf, 0, sizeof(char)*NFD_MAX_STRLEN );
+            ++specIdx;
+            if ( specIdx == filterCount )
+                break;
+        }
+
+        if ( !NFDi_IsFilterSegmentChar( *p_filterList ))
+        {
+            *p_typebuf = *p_filterList;
+            ++p_typebuf;
+        }
+
+        ++p_filterList;
+    }
+
+    /* Add wildcard */
+    specList[specIdx].pszSpec = WILDCARD;
+    specList[specIdx].pszName = WILDCARD;
+    
+    fileOpenDialog->SetFileTypes( filterCount+1, specList );
+
+    /* free speclist */
+    for ( size_t i = 0; i < filterCount; ++i )
+    {
+        NFDi_Free( (void*)specList[i].pszSpec );
+    }
+    NFDi_Free( specList );    
+
+    return NFD_OKAY;
+}
+
+static nfdresult_t AllocPathSet( IShellItemArray *shellItems, nfdpathset_t *pathSet )
+{
+    const char ERRORMSG[] = "Error allocating pathset.";
+
+    assert(shellItems);
+    assert(pathSet);
+    
+    // How many items in shellItems?
+    DWORD numShellItems;
+    HRESULT result = shellItems->GetCount(&numShellItems);
+    if ( !SUCCEEDED(result) )
+    {
+        NFDi_SetError(ERRORMSG);
+        return NFD_ERROR;
+    }
+
+    pathSet->count = static_cast<size_t>(numShellItems);
+    assert( pathSet->count > 0 );
+
+    pathSet->indices = (size_t*)NFDi_Malloc( sizeof(size_t)*pathSet->count );
+    if ( !pathSet->indices )
+    {
+        return NFD_ERROR;
+    }
+
+    /* count the total bytes needed for buf */
+    size_t bufSize = 0;
+    for ( DWORD i = 0; i < numShellItems; ++i )
+    {
+        ::IShellItem *shellItem;
+        result = shellItems->GetItemAt(i, &shellItem);
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError(ERRORMSG);
+            return NFD_ERROR;
+        }
+
+        // Confirm SFGAO_FILESYSTEM is true for this shellitem, or ignore it.
+        SFGAOF attribs;
+        result = shellItem->GetAttributes( SFGAO_FILESYSTEM, &attribs );
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError(ERRORMSG);
+            return NFD_ERROR;
+        }
+        if ( !(attribs & SFGAO_FILESYSTEM) )
+            continue;
+
+        LPWSTR name;
+        shellItem->GetDisplayName(SIGDN_FILESYSPATH, &name);
+
+        // Calculate length of name with UTF-8 encoding
+        bufSize += GetUTF8ByteCountForWChar( name );
+        
+        CoTaskMemFree(name);
+    }
+
+    assert(bufSize);
+
+    pathSet->buf = (nfdchar_t*)NFDi_Malloc( sizeof(nfdchar_t) * bufSize );
+    memset( pathSet->buf, 0, sizeof(nfdchar_t) * bufSize );
+
+    /* fill buf */
+    nfdchar_t *p_buf = pathSet->buf;
+    for (DWORD i = 0; i < numShellItems; ++i )
+    {
+        ::IShellItem *shellItem;
+        result = shellItems->GetItemAt(i, &shellItem);
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError(ERRORMSG);
+            return NFD_ERROR;
+        }
+
+        // Confirm SFGAO_FILESYSTEM is true for this shellitem, or ignore it.
+        SFGAOF attribs;
+        result = shellItem->GetAttributes( SFGAO_FILESYSTEM, &attribs );
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError(ERRORMSG);
+            return NFD_ERROR;
+        }
+        if ( !(attribs & SFGAO_FILESYSTEM) )
+            continue;
+
+        LPWSTR name;
+        shellItem->GetDisplayName(SIGDN_FILESYSPATH, &name);
+
+        int bytesWritten = CopyWCharToExistingNFDCharBuffer(name, p_buf);
+        CoTaskMemFree(name);
+
+        ptrdiff_t index = p_buf - pathSet->buf;
+        assert( index >= 0 );
+        pathSet->indices[i] = static_cast<size_t>(index);
+        
+        p_buf += bytesWritten; 
+    }
+     
+    return NFD_OKAY;
+}
+
+
+static nfdresult_t SetDefaultPath( IFileDialog *dialog, const char *defaultPath )
+{
+    if ( !defaultPath || strlen(defaultPath) == 0 )
+        return NFD_OKAY;
+
+    wchar_t *defaultPathW = {0};
+    CopyNFDCharToWChar( defaultPath, &defaultPathW );
+
+    IShellItem *folder;
+    HRESULT result = SHCreateItemFromParsingName( defaultPathW, NULL, IID_PPV_ARGS(&folder) );
+
+    // Valid non results.
+    if ( result == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) || result == HRESULT_FROM_WIN32(ERROR_INVALID_DRIVE) )
+    {
+        NFDi_Free( defaultPathW );
+        return NFD_OKAY;
+    }
+
+    if ( !SUCCEEDED(result) )
+    {
+        NFDi_SetError("Error creating ShellItem");
+        NFDi_Free( defaultPathW );
+        return NFD_ERROR;
+    }
+    
+    // Could also call SetDefaultFolder(), but this guarantees defaultPath -- more consistency across API.
+    dialog->SetFolder( folder );
+
+    NFDi_Free( defaultPathW );
+    folder->Release();
+    
+    return NFD_OKAY;
+}
+
+/* public */
+
+
+nfdresult_t NFD_OpenDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{
+    nfdresult_t nfdResult = NFD_ERROR;
+
+    
+    HRESULT coResult = COMInit();
+    if (!COMIsInitialized(coResult))
+    {        
+        NFDi_SetError("Could not initialize COM.");
+        return nfdResult;
+    }
+
+    // Create dialog
+    ::IFileOpenDialog *fileOpenDialog(NULL);    
+    HRESULT result = ::CoCreateInstance(::CLSID_FileOpenDialog, NULL,
+                                        CLSCTX_ALL, ::IID_IFileOpenDialog,
+                                        reinterpret_cast<void**>(&fileOpenDialog) );
+                                
+    if ( !SUCCEEDED(result) )
+    {
+        NFDi_SetError("Could not create dialog.");
+        goto end;
+    }
+
+    // Build the filter list
+    if ( !AddFiltersToDialog( fileOpenDialog, filterList ) )
+    {
+        goto end;
+    }
+
+    // Set the default path
+    if ( !SetDefaultPath( fileOpenDialog, defaultPath ) )
+    {
+        goto end;
+    }    
+
+    // Show the dialog.
+    result = fileOpenDialog->Show(NULL);
+    if ( SUCCEEDED(result) )
+    {
+        // Get the file name
+        ::IShellItem *shellItem(NULL);
+        result = fileOpenDialog->GetResult(&shellItem);
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError("Could not get shell item from dialog.");
+            goto end;
+        }
+        wchar_t *filePath(NULL);
+        result = shellItem->GetDisplayName(::SIGDN_FILESYSPATH, &filePath);
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError("Could not get file path for selected.");
+            shellItem->Release();
+            goto end;
+        }
+
+        CopyWCharToNFDChar( filePath, outPath );
+        CoTaskMemFree(filePath);
+        if ( !*outPath )
+        {
+            /* error is malloc-based, error message would be redundant */
+            shellItem->Release();
+            goto end;
+        }
+
+        nfdResult = NFD_OKAY;
+        shellItem->Release();
+    }
+    else if (result == HRESULT_FROM_WIN32(ERROR_CANCELLED) )
+    {
+        nfdResult = NFD_CANCEL;
+    }
+    else
+    {
+        NFDi_SetError("File dialog box show failed.");
+        nfdResult = NFD_ERROR;
+    }
+
+end:
+    if (fileOpenDialog)
+        fileOpenDialog->Release();
+
+    COMUninit(coResult);
+    
+    return nfdResult;
+}
+
+nfdresult_t NFD_OpenDialogMultiple( const nfdchar_t *filterList,
+                                    const nfdchar_t *defaultPath,
+                                    nfdpathset_t *outPaths )
+{
+    nfdresult_t nfdResult = NFD_ERROR;
+
+
+    HRESULT coResult = COMInit();
+    if (!COMIsInitialized(coResult))
+    {
+        NFDi_SetError("Could not initialize COM.");        
+        return nfdResult;
+    }
+
+    // Create dialog
+    ::IFileOpenDialog *fileOpenDialog(NULL);    
+    HRESULT result = ::CoCreateInstance(::CLSID_FileOpenDialog, NULL,
+                                        CLSCTX_ALL, ::IID_IFileOpenDialog,
+                                        reinterpret_cast<void**>(&fileOpenDialog) );
+                                
+    if ( !SUCCEEDED(result) )
+    {
+        fileOpenDialog = NULL;
+        NFDi_SetError("Could not create dialog.");
+        goto end;
+    }
+
+    // Build the filter list
+    if ( !AddFiltersToDialog( fileOpenDialog, filterList ) )
+    {
+        goto end;
+    }
+
+    // Set the default path
+    if ( !SetDefaultPath( fileOpenDialog, defaultPath ) )
+    {
+        goto end;
+    }
+
+    // Set a flag for multiple options
+    DWORD dwFlags;
+    result = fileOpenDialog->GetOptions(&dwFlags);
+    if ( !SUCCEEDED(result) )
+    {
+        NFDi_SetError("Could not get options.");
+        goto end;
+    }
+    result = fileOpenDialog->SetOptions(dwFlags | FOS_ALLOWMULTISELECT);
+    if ( !SUCCEEDED(result) )
+    {
+        NFDi_SetError("Could not set options.");
+        goto end;
+    }
+ 
+    // Show the dialog.
+    result = fileOpenDialog->Show(NULL);
+    if ( SUCCEEDED(result) )
+    {
+        IShellItemArray *shellItems;
+        result = fileOpenDialog->GetResults( &shellItems );
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError("Could not get shell items.");
+            goto end;
+        }
+        
+        if ( AllocPathSet( shellItems, outPaths ) == NFD_ERROR )
+        {
+            shellItems->Release();
+            goto end;
+        }
+
+        shellItems->Release();
+        nfdResult = NFD_OKAY;
+    }
+    else if (result == HRESULT_FROM_WIN32(ERROR_CANCELLED) )
+    {
+        nfdResult = NFD_CANCEL;
+    }
+    else
+    {
+        NFDi_SetError("File dialog box show failed.");
+        nfdResult = NFD_ERROR;
+    }
+
+end:
+    if ( fileOpenDialog )
+        fileOpenDialog->Release();
+
+    COMUninit(coResult);
+    
+    return nfdResult;
+}
+
+nfdresult_t NFD_SaveDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{
+    nfdresult_t nfdResult = NFD_ERROR;
+
+    HRESULT coResult = COMInit();
+    if (!COMIsInitialized(coResult))
+    {
+        NFDi_SetError("Could not initialize COM.");
+        return nfdResult;        
+    }
+    
+    // Create dialog
+    ::IFileSaveDialog *fileSaveDialog(NULL);    
+    HRESULT result = ::CoCreateInstance(::CLSID_FileSaveDialog, NULL,
+                                        CLSCTX_ALL, ::IID_IFileSaveDialog,
+                                        reinterpret_cast<void**>(&fileSaveDialog) );
+
+    if ( !SUCCEEDED(result) )
+    {
+        fileSaveDialog = NULL;
+        NFDi_SetError("Could not create dialog.");
+        goto end;
+    }
+
+    // Build the filter list
+    if ( !AddFiltersToDialog( fileSaveDialog, filterList ) )
+    {
+        goto end;
+    }
+
+    // Set the default path
+    if ( !SetDefaultPath( fileSaveDialog, defaultPath ) )
+    {
+        goto end;
+    }
+
+    // Show the dialog.
+    result = fileSaveDialog->Show(NULL);
+    if ( SUCCEEDED(result) )
+    {
+        // Get the file name
+        ::IShellItem *shellItem;
+        result = fileSaveDialog->GetResult(&shellItem);
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError("Could not get shell item from dialog.");
+            goto end;
+        }
+        wchar_t *filePath(NULL);
+        result = shellItem->GetDisplayName(::SIGDN_FILESYSPATH, &filePath);
+        if ( !SUCCEEDED(result) )
+        {
+            shellItem->Release();
+            NFDi_SetError("Could not get file path for selected.");
+            goto end;
+        }
+
+        CopyWCharToNFDChar( filePath, outPath );
+        CoTaskMemFree(filePath);
+        if ( !*outPath )
+        {
+            /* error is malloc-based, error message would be redundant */
+            shellItem->Release();
+            goto end;
+        }
+
+        nfdResult = NFD_OKAY;
+        shellItem->Release();
+    }
+    else if (result == HRESULT_FROM_WIN32(ERROR_CANCELLED) )
+    {
+        nfdResult = NFD_CANCEL;
+    }
+    else
+    {
+        NFDi_SetError("File dialog box show failed.");
+        nfdResult = NFD_ERROR;
+    }
+    
+end:
+    if ( fileSaveDialog )
+        fileSaveDialog->Release();
+
+    COMUninit(coResult);
+    
+    return nfdResult;
+}
+
+
+
+nfdresult_t NFD_PickFolder(const nfdchar_t *defaultPath,
+    nfdchar_t **outPath)
+{
+    nfdresult_t nfdResult = NFD_ERROR;
+    DWORD dwOptions = 0;
+
+    HRESULT coResult = COMInit();
+    if (!COMIsInitialized(coResult))
+    {
+        NFDi_SetError("CoInitializeEx failed.");
+        return nfdResult;
+    }
+
+    // Create dialog
+    ::IFileOpenDialog *fileDialog(NULL);
+    HRESULT result = CoCreateInstance(CLSID_FileOpenDialog,
+                                      NULL,
+                                      CLSCTX_ALL,
+                                      IID_PPV_ARGS(&fileDialog));
+    if ( !SUCCEEDED(result) )
+    {        
+        NFDi_SetError("CoCreateInstance for CLSID_FileOpenDialog failed.");
+        goto end;
+    }
+
+    // Set the default path
+    if (SetDefaultPath(fileDialog, defaultPath) != NFD_OKAY)
+    {
+        NFDi_SetError("SetDefaultPath failed.");
+        goto end;
+    }
+
+    // Get the dialogs options
+    if (!SUCCEEDED(fileDialog->GetOptions(&dwOptions)))
+    {
+        NFDi_SetError("GetOptions for IFileDialog failed.");
+        goto end;
+    }
+
+    // Add in FOS_PICKFOLDERS which hides files and only allows selection of folders
+    if (!SUCCEEDED(fileDialog->SetOptions(dwOptions | FOS_PICKFOLDERS)))
+    {
+        NFDi_SetError("SetOptions for IFileDialog failed.");
+        goto end;
+    }
+
+    // Show the dialog to the user
+    result = fileDialog->Show(NULL);
+    if ( SUCCEEDED(result) )
+    {
+        // Get the folder name
+        ::IShellItem *shellItem(NULL);
+
+        result = fileDialog->GetResult(&shellItem);
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError("Could not get file path for selected.");
+            shellItem->Release();
+            goto end;
+        }
+
+        wchar_t *path = NULL;
+        result = shellItem->GetDisplayName(SIGDN_DESKTOPABSOLUTEPARSING, &path);
+        if ( !SUCCEEDED(result) )
+        {
+            NFDi_SetError("GetDisplayName for IShellItem failed.");            
+            shellItem->Release();
+            goto end;
+        }
+
+        CopyWCharToNFDChar(path, outPath);
+        CoTaskMemFree(path);
+        if ( !*outPath )
+        {
+            shellItem->Release();
+            goto end;
+        }
+
+        nfdResult = NFD_OKAY;
+        shellItem->Release();
+    }
+    else if (result == HRESULT_FROM_WIN32(ERROR_CANCELLED) )
+    {
+        nfdResult = NFD_CANCEL;
+    }
+    else
+    {
+        NFDi_SetError("Show for IFileDialog failed.");
+        nfdResult = NFD_ERROR;
+    }
+
+ end:
+
+    if (fileDialog)
+        fileDialog->Release();
+
+    COMUninit(coResult);
+
+    return nfdResult;
+}

nfd.mod/nativefiledialog/src/nfd_zenity.c

@@ -0,0 +1,307 @@
+/*
+  Native File Dialog
+
+  http://www.frogtoss.com/labs
+*/
+
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+#include "nfd.h"
+#include "nfd_common.h"
+
+#define SIMPLE_EXEC_IMPLEMENTATION
+#include "simple_exec.h"
+
+
+const char NO_ZENITY_MSG[] = "zenity not installed";
+
+
+static void AddTypeToFilterName( const char *typebuf, char *filterName, size_t bufsize )
+{
+    size_t len = strlen(filterName);
+    if( len > 0 )
+        strncat( filterName, " *.", bufsize - len - 1 );
+    else
+        strncat( filterName, "--file-filter=*.", bufsize - len - 1 );
+    
+    len = strlen(filterName);
+    strncat( filterName, typebuf, bufsize - len - 1 );
+}
+
+static void AddFiltersToCommandArgs(char** commandArgs, int commandArgsLen, const char *filterList )
+{
+    char typebuf[NFD_MAX_STRLEN] = {0};
+    const char *p_filterList = filterList;
+    char *p_typebuf = typebuf;
+    char filterName[NFD_MAX_STRLEN] = {0};
+    int i;
+    
+    if ( !filterList || strlen(filterList) == 0 )
+        return;
+
+    while ( 1 )
+    {
+        
+        if ( NFDi_IsFilterSegmentChar(*p_filterList) )
+        {
+            char typebufWildcard[NFD_MAX_STRLEN];
+            /* add another type to the filter */
+            assert( strlen(typebuf) > 0 );
+            assert( strlen(typebuf) < NFD_MAX_STRLEN-1 );
+            
+            snprintf( typebufWildcard, NFD_MAX_STRLEN, "*.%s", typebuf );
+
+            AddTypeToFilterName( typebuf, filterName, NFD_MAX_STRLEN );
+            
+            p_typebuf = typebuf;
+            memset( typebuf, 0, sizeof(char) * NFD_MAX_STRLEN );
+        }
+        
+        if ( *p_filterList == ';' || *p_filterList == '\0' )
+        {
+            /* end of filter -- add it to the dialog */
+
+            for(i = 0; commandArgs[i] != NULL && i < commandArgsLen; i++);
+
+            commandArgs[i] = strdup(filterName);
+            
+            filterName[0] = '\0';
+
+            if ( *p_filterList == '\0' )
+                break;
+        }
+
+        if ( !NFDi_IsFilterSegmentChar( *p_filterList ) )
+        {
+            *p_typebuf = *p_filterList;
+            p_typebuf++;
+        }
+
+        p_filterList++;
+    }
+    
+    /* always append a wildcard option to the end*/
+    
+    for(i = 0; commandArgs[i] != NULL && i < commandArgsLen; i++);
+
+    commandArgs[i] = strdup("--file-filter=*.*");
+}
+
+static nfdresult_t ZenityCommon(char** command, int commandLen, const char* defaultPath, const char* filterList, char** stdOut)
+{
+    if(defaultPath != NULL)
+    {
+        char* prefix = "--filename=";
+        int len = strlen(prefix) + strlen(defaultPath) + 1;
+
+        char* tmp = (char*) calloc(len, 1);
+        strcat(tmp, prefix);
+        strcat(tmp, defaultPath);
+
+        int i;
+        for(i = 0; command[i] != NULL && i < commandLen; i++);
+
+        command[i] = tmp;
+    }
+
+    AddFiltersToCommandArgs(command, commandLen, filterList);
+
+    int byteCount = 0;
+    int exitCode = 0;
+    int processInvokeError = runCommandArray(stdOut, &byteCount, &exitCode, 0, command);
+
+    for(int i = 0; command[i] != NULL && i < commandLen; i++)
+        free(command[i]);
+
+    nfdresult_t result = NFD_OKAY;
+
+    if(processInvokeError == COMMAND_NOT_FOUND)
+    {
+        NFDi_SetError(NO_ZENITY_MSG);
+        result = NFD_ERROR;
+    }
+    else
+    {
+        if(exitCode == 1)
+            result = NFD_CANCEL;
+    }
+
+    return result;
+}
+ 
+
+static nfdresult_t AllocPathSet(char* zenityList, nfdpathset_t *pathSet )
+{
+    assert(zenityList);
+    assert(pathSet);
+    
+    size_t len = strlen(zenityList) + 1;
+    pathSet->buf = NFDi_Malloc(len);
+
+    int numEntries = 1;
+
+    for(size_t i = 0; i < len; i++)
+    {
+        char ch = zenityList[i];
+
+        if(ch == '|')
+        {
+            numEntries++;
+            ch = '\0';
+        }
+
+        pathSet->buf[i] = ch;
+    }
+
+    pathSet->count = numEntries;
+    assert( pathSet->count > 0 );
+
+    pathSet->indices = NFDi_Malloc( sizeof(size_t)*pathSet->count );
+
+    int entry = 0;
+    pathSet->indices[0] = 0;
+    for(size_t i = 0; i < len; i++)
+    {
+        char ch = zenityList[i];
+
+        if(ch == '|')
+        {
+            entry++;
+            pathSet->indices[entry] = i + 1;
+        }
+    }
+    
+    return NFD_OKAY;
+}
+                                 
+/* public */
+
+nfdresult_t NFD_OpenDialog( const char *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{    
+    int commandLen = 100;
+    char* command[commandLen];
+    memset(command, 0, commandLen * sizeof(char*));
+
+    command[0] = strdup("zenity");
+    command[1] = strdup("--file-selection");
+    command[2] = strdup("--title=Open File");
+
+    char* stdOut = NULL;
+    nfdresult_t result = ZenityCommon(command, commandLen, defaultPath, filterList, &stdOut);
+            
+    if(stdOut != NULL)
+    {
+        size_t len = strlen(stdOut);
+        *outPath = NFDi_Malloc(len);
+        memcpy(*outPath, stdOut, len);
+        (*outPath)[len-1] = '\0'; // trim out the final \n with a null terminator
+        free(stdOut);
+    }
+    else
+    {
+        *outPath = NULL;
+    }
+
+    return result;
+}
+
+
+nfdresult_t NFD_OpenDialogMultiple( const nfdchar_t *filterList,
+                                    const nfdchar_t *defaultPath,
+                                    nfdpathset_t *outPaths )
+{
+    int commandLen = 100;
+    char* command[commandLen];
+    memset(command, 0, commandLen * sizeof(char*));
+
+    command[0] = strdup("zenity");
+    command[1] = strdup("--file-selection");
+    command[2] = strdup("--title=Open Files");
+    command[3] = strdup("--multiple");
+
+    char* stdOut = NULL;
+    nfdresult_t result = ZenityCommon(command, commandLen, defaultPath, filterList, &stdOut);
+            
+    if(stdOut != NULL)
+    {
+        size_t len = strlen(stdOut);
+        stdOut[len-1] = '\0'; // remove trailing newline
+
+        if ( AllocPathSet( stdOut, outPaths ) == NFD_ERROR )
+            result = NFD_ERROR;
+
+        free(stdOut);
+    }
+    else
+    {
+        result = NFD_ERROR;
+    }
+
+    return result;
+}
+
+nfdresult_t NFD_SaveDialog( const nfdchar_t *filterList,
+                            const nfdchar_t *defaultPath,
+                            nfdchar_t **outPath )
+{
+    int commandLen = 100;
+    char* command[commandLen];
+    memset(command, 0, commandLen * sizeof(char*));
+
+    command[0] = strdup("zenity");
+    command[1] = strdup("--file-selection");
+    command[2] = strdup("--title=Save File");
+    command[3] = strdup("--save");
+
+    char* stdOut = NULL;
+    nfdresult_t result = ZenityCommon(command, commandLen, defaultPath, filterList, &stdOut);
+            
+    if(stdOut != NULL)
+    {
+        size_t len = strlen(stdOut);
+        *outPath = NFDi_Malloc(len);
+        memcpy(*outPath, stdOut, len);
+        (*outPath)[len-1] = '\0'; // trim out the final \n with a null terminator
+        free(stdOut);
+    }
+    else
+    {
+        *outPath = NULL;
+    }
+
+    return result;
+}
+
+nfdresult_t NFD_PickFolder(const nfdchar_t *defaultPath,
+    nfdchar_t **outPath)
+{
+    int commandLen = 100;
+    char* command[commandLen];
+    memset(command, 0, commandLen * sizeof(char*));
+
+    command[0] = strdup("zenity");
+    command[1] = strdup("--file-selection");
+    command[2] = strdup("--directory");
+    command[3] = strdup("--title=Select folder");
+
+    char* stdOut = NULL;
+    nfdresult_t result = ZenityCommon(command, commandLen, defaultPath, "", &stdOut);
+            
+    if(stdOut != NULL)
+    {
+        size_t len = strlen(stdOut);
+        *outPath = NFDi_Malloc(len);
+        memcpy(*outPath, stdOut, len);
+        (*outPath)[len-1] = '\0'; // trim out the final \n with a null terminator
+        free(stdOut);
+    }
+    else
+    {
+        *outPath = NULL;
+    }
+
+    return result;
+}

nfd.mod/nativefiledialog/src/simple_exec.h

@@ -0,0 +1,218 @@
+// copied from: https://github.com/wheybags/simple_exec/blob/5a74c507c4ce1b2bb166177ead4cca7cfa23cb35/simple_exec.h
+
+// simple_exec.h, single header library to run external programs + retrieve their status code and output (unix only for now)
+//
+// do this:
+// #define SIMPLE_EXEC_IMPLEMENTATION
+//   before you include this file in *one* C or C++ file to create the implementation.
+// i.e. it should look like this:
+// #define SIMPLE_EXEC_IMPLEMENTATION
+// #include "simple_exec.h"
+
+#ifndef SIMPLE_EXEC_H
+#define SIMPLE_EXEC_H
+
+int runCommand(char** stdOut, int* stdOutByteCount, int* returnCode, int includeStdErr, char* command, ...);
+int runCommandArray(char** stdOut, int* stdOutByteCount, int* returnCode, int includeStdErr, char* const* allArgs);
+
+#endif // SIMPLE_EXEC_H
+
+#ifdef SIMPLE_EXEC_IMPLEMENTATION
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+#include <sys/wait.h>
+#include <stdarg.h>
+#include <fcntl.h>
+
+#define release_assert(exp) { if (!(exp)) { abort(); } }
+
+enum PIPE_FILE_DESCRIPTORS
+{
+  READ_FD  = 0,
+  WRITE_FD = 1
+};
+
+enum RUN_COMMAND_ERROR
+{
+    COMMAND_RAN_OK = 0,
+    COMMAND_NOT_FOUND = 1
+};
+
+int runCommandArray(char** stdOut, int* stdOutByteCount, int* returnCode, int includeStdErr, char* const* allArgs)
+{
+    // adapted from: https://stackoverflow.com/a/479103
+
+    int bufferSize = 256;
+    char buffer[bufferSize + 1];
+
+    int dataReadFromChildDefaultSize = bufferSize * 5;
+    int dataReadFromChildSize = dataReadFromChildDefaultSize;
+    int dataReadFromChildUsed = 0;
+    char* dataReadFromChild = (char*)malloc(dataReadFromChildSize);
+
+
+    int parentToChild[2];
+    release_assert(pipe(parentToChild) == 0);
+
+    int childToParent[2];
+    release_assert(pipe(childToParent) == 0);
+
+    int errPipe[2];
+    release_assert(pipe(errPipe) == 0);
+
+    pid_t pid;
+    switch( pid = fork() )
+    {
+        case -1:
+        {
+            release_assert(0 && "Fork failed");
+            break;
+        }
+
+        case 0: // child
+        {
+            release_assert(dup2(parentToChild[READ_FD ], STDIN_FILENO ) != -1);
+            release_assert(dup2(childToParent[WRITE_FD], STDOUT_FILENO) != -1);
+            
+            if(includeStdErr)
+            {
+                release_assert(dup2(childToParent[WRITE_FD], STDERR_FILENO) != -1);
+            }
+            else
+            {
+                int devNull = open("/dev/null", O_WRONLY);
+                release_assert(dup2(devNull, STDERR_FILENO) != -1);
+            }
+
+            // unused
+            release_assert(close(parentToChild[WRITE_FD]) == 0);
+            release_assert(close(childToParent[READ_FD ]) == 0);
+            release_assert(close(errPipe[READ_FD]) == 0);
+            
+            const char* command = allArgs[0];
+            execvp(command, allArgs);
+
+            char err = 1;
+            ssize_t result = write(errPipe[WRITE_FD], &err, 1);
+            release_assert(result != -1);
+            
+            close(errPipe[WRITE_FD]);
+            close(parentToChild[READ_FD]);
+            close(childToParent[WRITE_FD]);
+
+            exit(0);
+        }
+
+
+        default: // parent
+        {
+            // unused
+            release_assert(close(parentToChild[READ_FD]) == 0);
+            release_assert(close(childToParent[WRITE_FD]) == 0);
+            release_assert(close(errPipe[WRITE_FD]) == 0);
+
+            while(1)
+            {
+                ssize_t bytesRead = 0;
+                switch(bytesRead = read(childToParent[READ_FD], buffer, bufferSize))
+                {
+                    case 0: // End-of-File, or non-blocking read.
+                    {
+                        int status = 0;
+                        release_assert(waitpid(pid, &status, 0) == pid);
+
+                        // done with these now
+                        release_assert(close(parentToChild[WRITE_FD]) == 0);
+                        release_assert(close(childToParent[READ_FD]) == 0);
+
+                        char errChar = 0;
+                        ssize_t result = read(errPipe[READ_FD], &errChar, 1);
+                        release_assert(result != -1);
+                        close(errPipe[READ_FD]);
+
+                        if(errChar)
+                        {
+                            free(dataReadFromChild); 
+                            return COMMAND_NOT_FOUND;
+                        }
+                        
+                        // free any un-needed memory with realloc + add a null terminator for convenience
+                        dataReadFromChild = (char*)realloc(dataReadFromChild, dataReadFromChildUsed + 1);
+                        dataReadFromChild[dataReadFromChildUsed] = '\0';
+                        
+                        if(stdOut != NULL)
+                            *stdOut = dataReadFromChild;
+                        else
+                            free(dataReadFromChild);
+
+                        if(stdOutByteCount != NULL)
+                            *stdOutByteCount = dataReadFromChildUsed;
+                        if(returnCode != NULL)
+                            *returnCode = WEXITSTATUS(status);
+
+                        return COMMAND_RAN_OK;
+                    }
+                    case -1:
+                    {
+                        release_assert(0 && "read() failed");
+                        break;
+                    }
+
+                    default:
+                    {
+                        if(dataReadFromChildUsed + bytesRead + 1 >= dataReadFromChildSize)
+                        {
+                            dataReadFromChildSize += dataReadFromChildDefaultSize;
+                            dataReadFromChild = (char*)realloc(dataReadFromChild, dataReadFromChildSize);
+                        }
+
+                        memcpy(dataReadFromChild + dataReadFromChildUsed, buffer, bytesRead);
+                        dataReadFromChildUsed += bytesRead;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+
+int runCommand(char** stdOut, int* stdOutByteCount, int* returnCode, int includeStdErr, char* command, ...)
+{
+    va_list vl;
+    va_start(vl, command);
+      
+    char* currArg = NULL;
+      
+    int allArgsInitialSize = 16;
+    int allArgsSize = allArgsInitialSize;
+    char** allArgs = (char**)malloc(sizeof(char*) * allArgsSize);
+    allArgs[0] = command;
+        
+    int i = 1;
+    do
+    {
+        currArg = va_arg(vl, char*);
+        allArgs[i] = currArg;
+
+        i++;
+
+        if(i >= allArgsSize)
+        {
+            allArgsSize += allArgsInitialSize;
+            allArgs = (char**)realloc(allArgs, sizeof(char*) * allArgsSize);
+        }
+
+    } while(currArg != NULL);
+
+    va_end(vl);
+
+    int retval = runCommandArray(stdOut, stdOutByteCount, returnCode, includeStdErr, allArgs);
+    free(allArgs);
+    return retval;
+}
+
+#endif //SIMPLE_EXEC_IMPLEMENTATION

nfd.mod/nfd.bmx

@@ -0,0 +1,24 @@
+SuperStrict
+
+Module Pub.NFD
+
+ModuleInfo "Version: 1.00"
+ModuleInfo "Author: Frogtoss Games"
+ModuleInfo "License: ZLib/PNG License"
+ModuleInfo "Credit: Adapted for BlitzMax by Bruce A Henderson"
+
+ModuleInfo "History: 1.00 Initial Release"
+ModuleInfo "History: nativefiledialog 1.1.6"
+
+Import "nativefiledialog/src/*.h"
+Import "nativefiledialog/src/include/*.h"
+
+Import "nativefiledialog/src/nfd_common.c"
+?osx
+Import "nativefiledialog/src/nfd_cocoa.m"
+?linux
+Import "nativefiledialog/src/nfd_zenity.c"
+?win32
+Import "-lole32 -luuid"
+Import "nativefiledialog/src/nfd_win.cpp"
+?