thirtyflightsofloving/qcommon/filesystem.c

/*
===========================================================================
Copyright (C) 1997-2001 Id Software, Inc.

This file is part of Quake 2 source code.

Quake 2 source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

Quake 2 source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Quake 2 source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

// filesystem.c -- game filesystem and PAK/PK3 file loading

#include "qcommon.h"
#include "filesystem.h"

#ifdef _WIN32
#include "../win32/winquake.h"
#endif

// enables faster binary pak searck, still experimental
#define BINARY_PACK_SEARCH

#pragma warning (disable : 4715)

/*
=============================================================================

QUAKE FILESYSTEM

=============================================================================
*/

/*
All of Quake's data access is through a hierchal file system, but the
contents of the file system can be transparently merged from several
sources.

The "base directory" is the path to the directory holding the
quake.exe and all game directories.  The sys_* files pass this
to host_init in quakeparms_t->basedir.  This can be overridden
with the "+set game" command line parm to allow code debugging
in a different directory.  The base directory is only used
during filesystem initialization.

The "game directory" is the first tree on the search path and directory
that all generated files (savegames, screenshots, demos, config files)
will be saved to.  This can be overridden with the "-game" command line
parameter.  The game directory can never be changed while quake is
executing.  This is a precacution against having a malicious server
instruct clients to write files over areas they shouldn't.
*/

void CDAudio_Stop (void);
void Com_FileExtension (const char *path, char *dst, int dstSize);

/*
=================
FS_FilePath

Returns the path up to, but not including the last /
=================
*/
void FS_FilePath (const char *path, char *dst, int dstSize)
{
	const char	*s, *last;

	s = last = path + strlen(path);
	while (*s != '/' && *s != '\\' && s != path){
		last = s-1;
		s--;
	}

	Q_strncpyz(dst, dstSize, path);
	if (last-path < dstSize)
		dst[last-path] = 0;
}


char *type_extensions[] =
{
	"bsp",
	"md2",
	"md3",
	"sp2",
	"dm2",
	"cin",
	"roq",
	"wav",
	"ogg",
	"pcx",
	"wal",
	"tga",
	"jpg",
	"png",
	"cfg",
	"txt",
	"def",
	"alias",
	"arena",
	"script",
//	"shader",
	"hud",
//	"menu",
//	"efx",
	0
};

/*
=================
FS_TypeFlagForPakItem
Returns bit flag based on pak item's extension.
=================
*/
unsigned int FS_TypeFlagForPakItem (const char *itemName)
{
	int		i;	
	char	extension[8];

	Com_FileExtension (itemName, extension, sizeof(extension));
	for (i=0; type_extensions[i]; i++) {
		if ( !Q_stricmp(extension, type_extensions[i]) )
			return (1<<i);
	}
	return 0;
}


/*
=================
FS_FileLength
=================
*/
int FS_FileLength (FILE *f)
{
	int cur, end;

	cur = ftell(f);
	fseek(f, 0, SEEK_END);
	end = ftell(f);
	fseek(f, cur, SEEK_SET);

	return end;
}

#if 0
/*
================
FS_Filelength
================
*/
int FS_Filelength (FILE *f)
{
	int		pos;
	int		end;

	pos = ftell (f);
	fseek (f, 0, SEEK_END);
	end = ftell (f);
	fseek (f, pos, SEEK_SET);

	return end;
}
#endif


/*
============
FS_CreatePath

Creates any directories needed to store the given filename
============
*/
void FS_CreatePath (const char *path)
{
	char	tmpBuf[MAX_OSPATH];
	char	*ofs;

	FS_DPrintf("FS_CreatePath( %s )\n", path);

	if (strstr(path, "..") || strstr(path, "::") || strstr(path, "\\\\") || strstr(path, "//"))
	{
		Com_Printf(S_COLOR_YELLOW"WARNING: refusing to create relative path '%s'\n", path);
		return;
	}
	Q_strncpyz (tmpBuf, sizeof(tmpBuf), path);

	for (ofs = tmpBuf+1 ; *ofs ; ofs++)
	{
		if (*ofs == '/' || *ofs == '\\') // Q2E changed
		//if (*ofs == '/')
		{	// create the directory
			*ofs = 0;
			Sys_Mkdir (tmpBuf);
			*ofs = '/';
		}
	}
}


// Psychospaz's mod detector
qboolean FS_ModType (const char *name)
{
	fsSearchPath_t	*search;

	for (search = fs_searchPaths ; search ; search = search->next)
	{
		if (strstr (search->path, name))
			return true;
	}
	return false;
}


// This enables Rogue menu options for Q2MP4
qboolean FS_RoguePath (void)
{
//	if (FS_ModType("rogue") || fs_roguegame->value)
	if (FS_ModType("rogue") || fs_roguegame->integer)
		return true;
	return false;
}


/*
=================
FS_DPrintf
=================
*/
void FS_DPrintf (const char *format, ...)
{
	char		msg[1024];
	va_list		argPtr;

//	if (!fs_debug->value)
	if (!fs_debug->integer)
		return;

	va_start(argPtr, format);
//	vsprintf(msg, format, argPtr);
	Q_vsnprintf (msg, sizeof(msg), format, argPtr);
	va_end(argPtr);

	Com_Printf("%s", msg);
}


/*
=================
FS_GameDir

Called to find where to write a file (demos, savegames, etc...)
=================
*/
char *FS_GameDir (void)
{
	return fs_gamedir;
}

/*char *FS_Gamedir (void)
{
	return fs_gamedir;
}*/


/*
=================
FS_SaveGameDir

Called to find where to write and read save games.
Either fs_savegamedir (which results in Sys_PrefDir()/<gamedir>) or FS_Gamedir()
=================
*/
char *FS_SaveGameDir (void)
{
	return (strlen(fs_savegamedir) > 0) ? fs_savegamedir : FS_GameDir();
}


/*
=================
FS_DownloadDir

Called to find where to download game content.
Either fs_downloaddir (which results in Sys_DownloadDir()/<gamedir>) or FS_Gamedir()
=================
*/
char *FS_DownloadDir (void)
{
	return (strlen(fs_downloaddir) > 0) ? fs_downloaddir : FS_GameDir();
}


/*
=================
FS_HomePath

Called to find game root path
=================
*/
char *FS_HomePath (void)
{
	return fs_homepath->string;
}


/*
=================
FS_DeletePath

TODO: delete tree contents
=================
*/
void FS_DeletePath (const char *path)
{
	FS_DPrintf("FS_DeletePath( %s )\n", path);

	Sys_Rmdir(path);
}


/*
=================
FS_FileForHandle

Returns a FILE * for a fileHandle_t
=================
*/
FILE *FS_FileForHandle (fileHandle_t f)
{
	fsHandle_t	*handle;

	handle = FS_GetFileByHandle(f);

	if (handle->zip || handle->writeZip)
		Com_Error(ERR_DROP, "FS_FileForHandle: can't get FILE on zip file");

	if (!handle->file)
		Com_Error(ERR_DROP, "FS_FileForHandle: NULL");

	return handle->file;
}


/*
=================
FS_HandleForFile

Finds a free fileHandle_t
=================
*/
fsHandle_t *FS_HandleForFile (const char *path, fileHandle_t *f)
{
	fsHandle_t	*handle;
	int			i;

	handle = fs_handles;
	for (i = 0; i < MAX_HANDLES; i++, handle++)
	{
		if (!handle->file && !handle->zip && !handle->writeZip)
		{
		//	strncpy(handle->name, path);
			Q_strncpyz(handle->name, sizeof(handle->name), path);
			*f = i + 1;
			return handle;
		}
	}

	// Failed
	Com_Error(ERR_DROP, "FS_HandleForFile: none free");
}


/*
=================
FS_GetFileByHandle

Returns a fsHandle_t * for the given fileHandle_t
=================
*/
fsHandle_t *FS_GetFileByHandle (fileHandle_t f)
{
	if (f <= 0 || f > MAX_HANDLES)
		Com_Error(ERR_DROP, "FS_GetFileByHandle: out of range");

	return &fs_handles[f-1];
}

#ifdef BINARY_PACK_SEARCH
/*
=================
FS_FindPackItem

Performs a binary search by hashed filename
to find pack items in a sorted pack
=================
*/
int FS_FindPackItem (fsPack_t *pack, char *itemName, unsigned int itemHash)
{
	int		smax, smin, smidpt;	//, counter = 0;
	int		i;	//, matchStart, matchEnd;

	// catch null pointers
	if ( !pack || !itemName )
		return -1;

	smin = 0;	smax = pack->numFiles;
	while ( (smax - smin) > 5 )	//&& counter < pack->numFiles )
	{
		smidpt = (smax + smin) / 2;
		if (pack->files[smidpt].hash > itemHash)	// before midpoint
			smax = smidpt;
		else if (pack->files[smidpt].hash < itemHash)	// after midpoint
			smin = smidpt;
		else	// pack->files[smidpt].hash == itemHash
			break;
	//	counter++;
	}
	for (i=smin; i<smax; i++)
	{	// make sure this entry is not blacklisted & compare filenames
		if ( pack->files[i].hash == itemHash && !pack->files[i].ignore
			&& !Q_stricmp(pack->files[i].name, itemName) )
			return i;
	}
	// found a match, scan for identical hashes
/*	if (pack->files[smidpt].hash == itemHash)
	{
		for (matchStart = smidpt-1; matchStart >= 0 && pack->files[matchStart].hash == itemHash; matchStart--);
		for (matchEnd = smidpt+1; matchEnd < pack->numFiles && pack->files[matchEnd].hash == itemHash; matchEnd++);
		for (i = matchStart; i < matchEnd; i++)
		{	// make sure this entry is not blacklisted & compare filenames
			if ( pack->files[i].hash == itemHash && !pack->files[i].ignore
				&& !Q_stricmp(pack->files[i].name, itemName) )
				return i;
		}
	}*/
	return -1;
}
#endif	// BINARY_PACK_SEARCH

/*
=================
FS_FOpenFileAppend

Returns file size or -1 on error
=================
*/
int FS_FOpenFileAppend (fsHandle_t *handle)
{
	char	path[MAX_OSPATH];

//	FS_CreatePath(handle->name);
	// include game path, but check for leading /
	if (handle->name[0] == '/')
		FS_CreatePath (va("%s%s", fs_savegamedir, handle->name));	// was fs_gamedir
	else
		FS_CreatePath (va("%s/%s", fs_savegamedir, handle->name));	// was fs_gamedir

	Com_sprintf(path, sizeof(path), "%s/%s", fs_savegamedir, handle->name);	// was fs_gamedir

	handle->file = fopen(path, "ab");
	if (handle->file)
	{
	//	if (fs_debug->value)
		if (fs_debug->integer)
			Com_Printf("FS_FOpenFileAppend: %s\n", path);

		return FS_FileLength(handle->file);
	}

//	if (fs_debug->value)
	if (fs_debug->integer)
		Com_Printf("FS_FOpenFileAppend: couldn't open %s\n", path);

	return -1;
}


/*
=================
FS_FOpenFileWrite

Always returns 0 or -1 on error
=================
*/
int FS_FOpenFileWrite (fsHandle_t *handle)
{
	char	path[MAX_OSPATH];

//	FS_CreatePath(handle->name);
	// include game path, but check for leading /
	if (handle->name[0] == '/')
		FS_CreatePath (va("%s%s", fs_savegamedir, handle->name));	// was fs_gamedir
	else
		FS_CreatePath (va("%s/%s", fs_savegamedir, handle->name));	// was fs_gamedir

	Com_sprintf(path, sizeof(path), "%s/%s", fs_savegamedir, handle->name);	// was fs_gamedir

	handle->file = fopen(path, "wb");
	if (handle->file)
	{
	//	if (fs_debug->value)
		if (fs_debug->integer)
			Com_Printf("FS_FOpenFileWrite: %s\n", path);
		return 0;
	}

//	if (fs_debug->value)
	if (fs_debug->integer)
		Com_Printf("FS_FOpenFileWrite: couldn't open %s\n", path);

	return -1;
}


/*
=================
FS_FOpenFileRead

Returns file size or -1 if not found.
Can open separate files as well as files inside pack files (both PAK 
and PK3).
=================
*/
int FS_FOpenFileRead (fsHandle_t *handle)
{
	fsSearchPath_t	*search;
	fsPack_t		*pack;
	char			path[MAX_OSPATH];
	unsigned int	hash;
	int				i;
	unsigned int	typeFlag;

	// Knightmare- hack global vars for autodownloads
	file_from_protected_pak = 0;			// from Yamagi Q2
	file_from_pak = 0;
	file_from_pk3 = 0;
	Com_sprintf(last_pk3_name, sizeof(last_pk3_name), "\0");
	hash = Com_HashFileName(handle->name, 0, false);
	typeFlag = FS_TypeFlagForPakItem(handle->name);

	// Search through the path, one element at a time
	for (search = fs_searchPaths; search; search = search->next)
	{
		if (search->pack)
		{	// Search inside a pack file
			pack = search->pack;

			// skip if pack doesn't contain this type of file
			if ((typeFlag != 0)) {
				if (!(pack->contentFlags & typeFlag))
					continue;
			}

#ifdef BINARY_PACK_SEARCH
			// find index of pack item
			i = FS_FindPackItem (pack, handle->name, hash);
			// found it!
			if ( i != -1 && i >= 0 && i < pack->numFiles )
			{
#else
			for (i = 0; i < pack->numFiles; i++)
			{
				if (pack->files[i].ignore)	// skip blacklisted files
					continue;
				if (hash != pack->files[i].hash)	// compare hash first
					continue;
#endif	// 	BINARY_PACK_SEARCH
				if (!Q_stricmp(pack->files[i].name, handle->name))
				{
					// Found it!
					FS_FilePath (pack->name, fs_fileInPath, sizeof(fs_fileInPath));
					fs_fileInPack = true;

				//	if (fs_debug->value)
					if (fs_debug->integer)
						Com_Printf("FS_FOpenFileRead: %s (found in %s)\n", handle->name, pack->name);

					if (pack->pak)
					{	// PAK
						file_from_pak = 1; // Knightmare added
						file_from_protected_pak = pack->isProtectedPak ? 1 : 0;		// from Yamagi Q2
						handle->file = fopen(pack->name, "rb");
						handle->pakFile = &pack->files[i];	// set pakfile pointer
						if (handle->file)
						{
							fseek(handle->file, pack->files[i].offset, SEEK_SET);

							return pack->files[i].size;
						}
					}
					else if (pack->pk3)
					{	// PK3
						file_from_pk3 = 1; // Knightmare added
						file_from_protected_pak = pack->isProtectedPak ? 1 : 0;		// from Yamagi Q2
						Com_sprintf(last_pk3_name, sizeof(last_pk3_name), strrchr(pack->name, '/')+1); // Knightmare added
						handle->zip = unzOpen(pack->name);
						if (handle->zip)
						{
							if (unzLocateFile(handle->zip, handle->name, 2) == UNZ_OK)
							{
								if (unzOpenCurrentFile(handle->zip) == UNZ_OK)
									return pack->files[i].size;
							}

							unzClose(handle->zip);
						}
					}

					Com_Error(ERR_FATAL, "Couldn't reopen %s", pack->name);
				}
				else
					Com_Printf("FS_FOpenFileRead: different filenames with identical hash (%s, %s)!\n", pack->files[i].name, handle->name);
			}
		}
		else
		{	// Search in a directory tree
			Com_sprintf(path, sizeof(path), "%s/%s", search->path, handle->name);

			handle->file = fopen(path, "rb");
			if (handle->file)
			{	// Found it!
				Q_strncpyz(fs_fileInPath, sizeof(fs_fileInPath), search->path);
				fs_fileInPack = false;

			//	if (fs_debug->value)
				if (fs_debug->integer)
					Com_Printf("FS_FOpenFileRead: %s (found in %s)\n", handle->name, search->path);

				return FS_FileLength(handle->file);
			}
		}
	}

	// Not found!
	fs_fileInPath[0] = 0;
	fs_fileInPack = false;

//	if (fs_debug->value)
	if (fs_debug->integer)
		Com_Printf("FS_FOpenFileRead: couldn't find %s\n", handle->name);

	return -1;
}

/*
=================
FS_FOpenFile

Opens a file for "mode".
Returns file size or -1 if an error occurs/not found.
Can open separate files as well as files inside pack files (both PAK 
and PK3).
=================
*/
int FS_FOpenFile (const char *name, fileHandle_t *f, fsMode_t mode)
{
	fsHandle_t	*handle;
	int			size;

	handle = FS_HandleForFile(name, f);

	Q_strncpyz(handle->name, sizeof(handle->name), name);
	handle->mode = mode;

	switch (mode)
	{
	case FS_READ:
		size = FS_FOpenFileRead(handle);
		break;
	case FS_WRITE:
		size = FS_FOpenFileWrite(handle);
		break;
	case FS_APPEND:
		size = FS_FOpenFileAppend(handle);
		break;
	default:
		Com_Error(ERR_FATAL, "FS_FOpenFile: bad mode (%i)", mode);
	}

	if (size != -1)
		return size;

	// Couldn't open, so free the handle
	memset(handle, 0, sizeof(*handle));

	*f = 0;
	return -1;
}


/*
=================
FS_FOpenCompressedFileWrite

Always returns 0 or -1 on error
Opens files directly from inside a specified zip file,
bypassing the pak/searchpath system, and looking only in the current gamedir.
=================
*/
int FS_FOpenCompressedFileWrite (fsHandle_t *handle, const char *zipName, const char *fileName, qboolean add)
{
	char		path[MAX_OSPATH];
	int			append;

//	FS_CreatePath (va("%s", zipName));
	// include game path, but check for leading /
	if (*zipName == '/')
		FS_CreatePath (va("%s%s", fs_savegamedir, zipName));	// was fs_gamedir
	else
		FS_CreatePath (va("%s/%s", fs_savegamedir, zipName));	// was fs_gamedir

	Com_sprintf(path, sizeof(path), "%s/%s", fs_savegamedir, zipName);	// was fs_gamedir

	append = add ? (FS_SaveFileExists ((char *)zipName) ? 2 : 0) : 0;	// was FS_LocalFileExists()
	handle->writeZip = zipOpen(path, append);
	if (handle->writeZip)
	{
		if (zipOpenNewFileInZip(handle->writeZip, fileName, NULL, NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION) == ZIP_OK)
		{
		//	if (fs_debug->value)
			if (fs_debug->integer)
				Com_Printf("FS_FOpenCompressedFileWrite: %s/%s\n", path, fileName);
			return 0;
		}
		zipClose(handle->writeZip, NULL);
	}

//	if (fs_debug->value)
	if (fs_debug->integer)
		Com_Printf("FS_FOpenCompressedFileWrite: couldn't open %s/%s\n", path, fileName);

	return -1;
}


/*
=================
FS_FOpenCompressedFileRead

Returns file size or -1 if not found.
Opens files directly from inside a specified zip file,
bypassing the pak system.
=================
*/
int FS_FOpenCompressedFileRead (fsHandle_t *handle, const char *zipName, const char *fileName)
{
	fsSearchPath_t	*search;
	char			path[MAX_OSPATH];
	unz_file_info	info;

	// Search through the path, one element at a time
	for (search = fs_searchPaths; search; search = search->next)
	{
		if (!search->pack) // Search only in a directory tree
		{
			Com_sprintf(path, sizeof(path), "%s/%s", search->path, zipName);
			handle->zip = unzOpen(path);
			if (handle->zip)
			{
				if (unzLocateFile(handle->zip, fileName, 2) == UNZ_OK)
				{
					if (unzOpenCurrentFile(handle->zip) == UNZ_OK)
					{	// Found it!
						Q_strncpyz(fs_fileInPath, sizeof(fs_fileInPath), search->path);
						fs_fileInPack = false;
					//	if (fs_debug->value)
						if (fs_debug->integer)
							Com_Printf("FS_FOpenCompressedFileRead: %s (found in %s/%s)\n", fileName, search->path, zipName);

						unzGetCurrentFileInfo(handle->zip, &info, NULL, 0, NULL, 0, NULL, 0);
						return info.uncompressed_size;
					}
				}
				unzClose(handle->zip);
			}
		}
	}

	// Not found!
	fs_fileInPath[0] = 0;
	fs_fileInPack = false;

//	if (fs_debug->value)
	if (fs_debug->integer)
		Com_Printf("FS_FOpenCompressedFileRead: couldn't find %s\n", handle->name);

	return -1;
}


/*
=================
FS_FOpenCompressedFile

Opens a zip file for "mode".
Returns file size or -1 if an error occurs/not found.
Opens files directly from inside a specified zip file,
bypassing the pak system.
=================
*/
int FS_FOpenCompressedFile (const char *zipName, const char *fileName, fileHandle_t *f, fsMode_t mode)
{
	fsHandle_t	*handle = NULL;
	char		name[MAX_OSPATH];
	int			size;

	Com_sprintf (name, sizeof(name), "%s/%s", zipName, fileName);
	handle = FS_HandleForFile(name, f);

	if (!handle) {	// case of no handles available
		*f = 0;
		return -1;
	}

	Q_strncpyz(handle->name, sizeof(handle->name), name);
	handle->mode = mode;

	switch (mode)
	{
	case FS_READ:
		size = FS_FOpenCompressedFileRead(handle, zipName, fileName);
		break;
	case FS_WRITE:
		size = FS_FOpenCompressedFileWrite(handle, zipName, fileName, false);
		break;
	case FS_APPEND:
		size = FS_FOpenCompressedFileWrite(handle, zipName, fileName, true);
		break;
	default:
		Com_Error(ERR_FATAL, "FS_FOpenCompressedFile: bad mode (%i)", mode);
	}

	if (size != -1)
		return size;

	// Couldn't open, so free the handle
	memset(handle, 0, sizeof(*handle));

	*f = 0;
	return -1;
}

/*
=================
FS_FCloseFile
=================
*/
void FS_FCloseFile (fileHandle_t f)
{
	fsHandle_t *handle;

	handle = FS_GetFileByHandle(f);

	if (handle->file)
		fclose(handle->file);
	else if (handle->zip) {
		unzCloseCurrentFile(handle->zip);
		unzClose(handle->zip);
	}
	else if (handle->writeZip)
	{
		zipCloseFileInZip(handle->writeZip);
		zipClose(handle->writeZip, NULL);
	}

	memset(handle, 0, sizeof(*handle));
}

/*
=================
FS_Read

Properly handles partial reads
=================
*/
int FS_Read (void *buffer, int size, fileHandle_t f)
{
	fsHandle_t	*handle;
	int			remaining, r;
	byte		*buf;
	qboolean	tried = false;

	handle = FS_GetFileByHandle(f);

	// Read
	remaining = size;
	buf = (byte *)buffer;

	while (remaining)
	{
		if (handle->file)
			r = (int)fread(buf, 1, remaining, handle->file);
		else if (handle->zip)
			r = unzReadCurrentFile(handle->zip, buf, remaining);
		else
			return 0;

		if (r == 0)
		{
			if (!tried)
			{	// We might have been trying to read from a CD
				CDAudio_Stop();
				tried = true;
			}
			else
			{	// Already tried once
				//Com_Error(ERR_FATAL, va("FS_Read: 0 bytes read from %s", handle->name));
#ifdef NOTTHIRTYFLIGHTS //bc hide this error message. todo: make it display during developer2 mode.
				Com_DPrintf(S_COLOR_YELLOW"FS_Read: 0 bytes read from %s\n", handle->name);
#endif
				return size - remaining;
			}
		}
		else if (r == -1)
			Com_Error(ERR_FATAL, "FS_Read: -1 bytes read from %s", handle->name);

		remaining -= r;
		buf += r;
	}

	return size;
}


/*
=================
FS_FRead

Properly handles partial reads of size up to count times
No error if it can't read
=================
*/
int FS_FRead (void *buffer, int size, int count, fileHandle_t f)
{
	fsHandle_t	*handle;
	int			loops, remaining, r;
	byte		*buf;
	qboolean	tried = false;

	handle = FS_GetFileByHandle(f);

	// Read
	loops = count;
	//remaining = size;
	buf = (byte *)buffer;

	while (loops)
	{	// Read in chunks
		remaining = size;
		while (remaining)
		{
			if (handle->file)
				r = (int)fread(buf, 1, remaining, handle->file);
			else if (handle->zip)
				r = unzReadCurrentFile(handle->zip, buf, remaining);
			else
				return 0;

			if (r == 0)
			{
				if (!tried)
				{	// We might have been trying to read from a CD
					CDAudio_Stop();
					tried = true;
				}
				else {
					//Com_Printf(S_COLOR_RED"FS_FRead: 0 bytes read from %s\n", handle->name);
					return size - remaining;
				}
			}
			else if (r == -1)
				Com_Error(ERR_FATAL, "FS_FRead: -1 bytes read from %s", handle->name);

			remaining -= r;
			buf += r;
		}
		loops--;
	}
	return size;
}

/*
=================
FS_Write

Properly handles partial writes
=================
*/
int FS_Write (const void *buffer, int size, fileHandle_t f){

	fsHandle_t	*handle;
	int			remaining, w;
	byte		*buf;

	handle = FS_GetFileByHandle(f);

	// Write
	remaining = size;
	buf = (byte *)buffer;

	while (remaining)
	{
		if (handle->file)
			w = (int)fwrite(buf, 1, remaining, handle->file);
		else if (handle->writeZip)
		{
			if (zipWriteInFileInZip(handle->writeZip, buf, remaining) == ZIP_OK)
				w = remaining;
		}
		else if (handle->zip)
			Com_Error(ERR_FATAL, "FS_Write: can't write to zip file %s", handle->name);
		else
			return 0;

		if (w == 0)
		{
			Com_Printf(S_COLOR_RED"FS_Write: 0 bytes written to %s\n", handle->name);
			return size - remaining;
		}
		else if (w == -1)
			Com_Error(ERR_FATAL, "FS_Write: -1 bytes written to %s", handle->name);

		remaining -= w;
		buf += w;
	}

	return size;
}

/*
=================
FS_CompressFile
=================
*/
int FS_CompressFile (const char *fileName, const char *zipName, const char *internalName)
{
	int				size, partSize;
	fileHandle_t	f;
	FILE			*fp;
	byte			buf[8192];
	fsMode_t		mode;

	fp = fopen (fileName, "rb");
	if (!fp)
		return -1;

	mode = FS_SaveFileExists((char *)zipName) ? FS_APPEND : FS_WRITE;	// was FS_LocalFileExists()
	size = FS_FOpenCompressedFile (zipName, internalName, &f, mode);
	if (size == -1) {
		fclose (fp);
		return -1;
	}

	do {
		partSize = (int)fread (&buf, 1, sizeof(buf), fp);
		if (partSize > 0)
			FS_Write (&buf, partSize, f); 
	} while (partSize > 0);

	FS_FCloseFile (f);
	fclose (fp);

	return size;
}

/*
=================
FS_DecompressFile
=================
*/
int FS_DecompressFile (const char *fileName, const char *zipName, const char *internalName)
{
	int				size, partSize;
	fileHandle_t	f;
	FILE			*fp;
	byte			buf[8192];

	size = FS_FOpenCompressedFile (zipName, internalName, &f, FS_READ);
	if (size == -1)
		return -1;

	fp = fopen (fileName, "wb");
	if (!fp) {
		FS_FCloseFile (f);
		return -1;
	}

	do {
		partSize = FS_Read (&buf, sizeof(buf), f);
		if (partSize > 0)
			fwrite (&buf, 1, partSize, fp);
	} while (partSize > 0);

	fclose (fp);
	FS_FCloseFile (f);

	return size;
}

/*
=================
FS_FTell
=================
*/
int FS_FTell (fileHandle_t f)
{

	fsHandle_t *handle;

	handle = FS_GetFileByHandle(f);

	if (handle->pakFile) {	// inside .pak file uses offset/size
		int	pos = ftell(handle->file);
		if (pos != -1)
			pos -= handle->pakFile->offset;
		return pos;
	}
	else if (handle->file)
		return ftell(handle->file);
	else if (handle->zip)
		return unztell(handle->zip);

	return 0;
}

/*
=================
FS_ListPak

Generates a listing of the contents of a pak file
=================
*/
char **FS_ListPak (const char *find, int *num)
{
	fsSearchPath_t	*search;
	//char			netpath[MAX_OSPATH];
	fsPack_t		*pak;

	int nfiles = 0, nfound = 0;
	char **list = 0;
	int i;

	// now check pak files
	for (search = fs_searchPaths; search; search = search->next)
	{
		if (!search->pack)
			continue;

		pak = search->pack;

		// now find and build list
		for (i=0 ; i<pak->numFiles ; i++) {
			if (!pak->files[i].ignore)
				nfiles++;
		}
	}

	list = malloc( sizeof( char * ) * nfiles );
	memset( list, 0, sizeof( char * ) * nfiles );

	for (search = fs_searchPaths; search; search = search->next)
	{
		if (!search->pack)
			continue;

		pak = search->pack;

		// now find and build list
		for (i=0 ; i<pak->numFiles ; i++)
		{
			if (!pak->files[i].ignore && strstr(pak->files[i].name, find))
			{
				list[nfound] = strdup(pak->files[i].name);
				nfound++;
			}
		}
	}
	
	*num = nfound;

	return list;		
}

/*
=================
FS_FindFiles

Generates a listing of files in the given path with an optional extension.
Lists all files if extension is NULL.
=================
*/
char **FS_FindFiles (const char *path, const char *extension, int *num)
{
	fsSearchPath_t	*search;
	fsPack_t		*pak;
	char			dir[MAX_OSPATH], ext[16], findName[1024];
	char			*name, **itemFiles, *tmpList[MAX_FIND_FILES], **outList = NULL;
	int				nFound = 0;
	int				i, nItems;	// len, extLen;

	memset (tmpList, 0, sizeof(tmpList));

	for (search = fs_searchPaths; search; search = search->next)
	{
		if (search->pack)	// search inside a pak/pk3 file
		{
			pak = search->pack;
			for (i=0 ; i<pak->numFiles ; i++)
			{
				// skip blacklisted pak entries
				if (pak->files[i].ignore)
					continue;

				// check path
				FS_FilePath (pak->files[i].name, dir, sizeof(dir));
				if ( Q_stricmp((char *)path, dir) )
					continue;

				// check extension
				if ( (extension != NULL) && (strlen(extension) > 0) ) {
					Com_FileExtension(pak->files[i].name, ext, sizeof(ext));
					if ( Q_stricmp((char *)extension, ext) )
						continue;
				}

				// found something
				name = pak->files[i].name;
				if (nFound < (MAX_FIND_FILES-1))
				{
					if (!FS_ItemInList(name, nFound, tmpList)) // check if already in list
					{
						tmpList[nFound] = strdup(name);
						nFound++;
					}
				}
			}
		}
		else	// search in a directory tree
		{
			if ( (extension != NULL) && (strlen(extension) > 0) )
				Com_sprintf (findName, sizeof(findName), "%s/%s/*.%s", search->path, path, extension);
			else
				Com_sprintf (findName, sizeof(findName), "%s/%s/*.*", search->path, path);

			itemFiles = FS_ListFiles(findName, &nItems, 0, SFF_SUBDIR | SFF_HIDDEN | SFF_SYSTEM);

			for (i=0; i < nItems; i++)
			{
				if (!itemFiles || !itemFiles[i])
					continue;

				// check extension
			/*	if ( (extension != NULL) && (strlen(extension) > 0) ) {
					len = (int)strlen(itemFiles[i]);
					extLen = (int)strlen(extension);
					if ( strcmp(itemFiles[i]+max(len-(extLen+1),0), va(".%s", extension)) )
						continue;
				}*/

				// found something
				name = itemFiles[i] + strlen(search->path) + 1; // skip over search path and /
				if (nFound < (MAX_FIND_FILES-1))
				{
					if (!FS_ItemInList(name, nFound, tmpList)) // check if already in list
					{
						tmpList[nFound] = strdup(name);
						nFound++;
					}
				}
			}
			if (nItems)
				FS_FreeFileList (itemFiles, nItems);
		}
	}

	// sort the list
	qsort(tmpList, nFound, sizeof(char *), Q_SortStrcmp);

	// alloc and copy output list
	outList = malloc(sizeof(char *) * (nFound+1));
	memset(outList, 0, sizeof(char *) * (nFound+1));
	for (i=0; i<nFound; i++) {
		outList[i] = tmpList[i];
	}
	
	if (num)
		*num = nFound;
	return outList;
}

/*
=================
FS_FilteredFindFiles

Generates a listing of files that matches the given filter/widlcards.
=================
*/
char **FS_FilteredFindFiles (const char *pattern, int *num)
{
	fsSearchPath_t	*search;
	fsPack_t		*pak;
	char			findName[1024];
	char			*name, **itemFiles, *tmpList[MAX_FIND_FILES], **outList = NULL;
	int				nFound = 0;
	int				i, nItems;

	memset (tmpList, 0, sizeof(tmpList));

	for (search = fs_searchPaths; search; search = search->next)
	{
		if (search->pack)	// search inside a pak/pk3 file
		{
			pak = search->pack;
			for (i=0 ; i<pak->numFiles ; i++)
			{
				// skip blacklisted pak entries
				if (pak->files[i].ignore)
					continue;

				// match pattern
				if ( !Q_GlobMatch(pattern, pak->files[i].name, false) )
					continue;

				// found something
				name = pak->files[i].name;
				if (nFound < (MAX_FIND_FILES-1))
				{
					if (!FS_ItemInList(name, nFound, tmpList)) // check if already in list
					{
						tmpList[nFound] = strdup(name);
						nFound++;
					}
				}
			}
		}
		else	// search in a directory tree
		{
			Com_sprintf (findName, sizeof(findName), "%s/%s", search->path, pattern);
			itemFiles = FS_ListFiles(findName, &nItems, 0, SFF_SUBDIR | SFF_HIDDEN | SFF_SYSTEM);

			for (i=0; i < nItems; i++)
			{
				if (!itemFiles || !itemFiles[i])
					continue;

				// match pattern
				if ( !Q_GlobMatch(pattern, itemFiles[i] + strlen(search->path) + 1, false) )
					continue;

				// found something
				name = itemFiles[i] + strlen(search->path) + 1; // skip over search path and /
				if (nFound < (MAX_FIND_FILES-1))
				{
					if (!FS_ItemInList(name, nFound, tmpList)) // check if already in list
					{
						tmpList[nFound] = strdup(name);
						nFound++;
					}
				}
			}
			if (nItems)
				FS_FreeFileList (itemFiles, nItems);
		}
	}

	// sort the list
	qsort(tmpList, nFound, sizeof(char *), Q_SortStrcmp);

	// alloc and copy output list
	outList = malloc(sizeof(char *) * (nFound+1));
	memset(outList, 0, sizeof(char *) * (nFound+1));
	for (i=0; i<nFound; i++) {
		outList[i] = tmpList[i];
	}

	if (num)
		*num = nFound;
	return outList;
}

/*
=================
FS_GetFileList

Generates a listing of files in the given path with the specified optional extension
If extension is NULL, retuns all files in the path.  Also does filtered search based on wildcards.
=================
*/
char **FS_GetFileList (const char *path, const char *extension, int *num)
{
	// If wildcards are in path, use filtered search instead of extension
	if ( strchr(path, '*') || strchr(path, '?') || strchr(path, '[') || strchr(path, ']') )
		return FS_FilteredFindFiles (path, num);
	else
		return FS_FindFiles (path, extension, num);
}

/*
=================
FS_Seek
=================
*/
void FS_Seek (fileHandle_t f, int offset, fsOrigin_t origin)
{
	fsHandle_t		*handle;
	unz_file_info	info;
	int				remaining, r, len;
	byte			dummy[0x8000];

	handle = FS_GetFileByHandle(f);

	if (handle->pakFile)	// inside .pak file uses offset/size
	{
		switch (origin)
		{
		case FS_SEEK_SET:
			fseek(handle->file, handle->pakFile->offset + offset, SEEK_SET);
			break;
		case FS_SEEK_CUR:
			fseek(handle->file, offset, SEEK_CUR);
			break;
		case FS_SEEK_END:
			fseek(handle->file, handle->pakFile->offset + handle->pakFile->size, SEEK_SET);
			break;
		default:
			Com_Error(ERR_FATAL, "FS_Seek: bad origin (%i)", origin);
		}
	}
	else if (handle->file)
	{
		switch (origin)
		{
		case FS_SEEK_SET:
			fseek(handle->file, offset, SEEK_SET);
			break;
		case FS_SEEK_CUR:
			fseek(handle->file, offset, SEEK_CUR);
			break;
		case FS_SEEK_END:
			fseek(handle->file, offset, SEEK_END);
			break;
		default:
			Com_Error(ERR_FATAL, "FS_Seek: bad origin (%i)", origin);
		}
	}
	else if (handle->zip)
	{
		switch (origin)
		{
		case FS_SEEK_SET:
			remaining = offset;
			break;
		case FS_SEEK_CUR:
			remaining = offset + unztell(handle->zip);
			break;
		case FS_SEEK_END:
			unzGetCurrentFileInfo(handle->zip, &info, NULL, 0, NULL, 0, NULL, 0);

			remaining = offset + info.uncompressed_size;
			break;
		default:
			Com_Error(ERR_FATAL, "FS_Seek: bad origin (%i)", origin);
		}

		// Reopen the file
		unzCloseCurrentFile(handle->zip);
		unzOpenCurrentFile(handle->zip);

		// Skip until the desired offset is reached
		while (remaining)
		{
			len = remaining;
			if (len > sizeof(dummy))
				len = sizeof(dummy);

			r = unzReadCurrentFile(handle->zip, dummy, len);
			if (r <= 0)
				break;

			remaining -= r;
		}
	}
}

/*
=================
FS_Tell

Returns -1 if an error occurs
=================
*/
int FS_Tell (fileHandle_t f)
{
	fsHandle_t *handle;

	handle = FS_GetFileByHandle(f);

	if (handle->pakFile) {	// inside .pak file uses offset/size
		int	pos = ftell(handle->file);
		if (pos != -1)
			pos -= handle->pakFile->offset;
		return pos;
	}
	else if (handle->file)
		return ftell(handle->file);
	else if (handle->zip)
		return unztell(handle->zip);
	else
		return -1;
}

/*
=================
FS_FileExists
================
*/
qboolean FS_FileExists (const char *path)
{
	fileHandle_t f;

	FS_FOpenFile(path, &f, FS_READ);
	if (f)
	{
		FS_FCloseFile(f);
		return true;
	}
	return false;
}

/*
=================
FS_LocalFileExists
================
*/
qboolean FS_LocalFileExists (const char *path)
{
	char		realPath[MAX_OSPATH];
	FILE		*f;

	Com_sprintf (realPath, sizeof(realPath), "%s/%s", FS_GameDir(), path);
	f = fopen (realPath, "rb");
	if (f) {
		fclose(f);
		return true;
	}
	return false;
}

/*
=================
FS_SaveFileExists
================
*/
qboolean FS_SaveFileExists (const char *path)
{
	char		realPath[MAX_OSPATH];
	FILE		*f;

	Com_sprintf (realPath, sizeof(realPath), "%s/%s", FS_SaveGameDir(), path);	// was FS_GameDir()
	f = fopen (realPath, "rb");
	if (f) {
		fclose(f);
		return true;
	}
	return false;
}

/*
=================
FS_DownloadFileExists
================
*/
qboolean FS_DownloadFileExists (const char *path)
{
	char		realPath[MAX_OSPATH];
	FILE		*f;

	Com_sprintf (realPath, sizeof(realPath), "%s/%s", FS_DownloadDir(), path);
	f = fopen (realPath, "rb");
	if (f) {
		fclose(f);
		return true;
	}
	return false;
}
/*
================
FS_CopyFile
================
*/
void FS_CopyFile (const char *src, const char *dst)
{
	FILE	*f1, *f2;
	size_t	l;
	byte	buffer[65536];

	Com_DPrintf ("FS_CopyFile (%s, %s)\n", src, dst);

	f1 = fopen (src, "rb");
	if (!f1)
		return;
	f2 = fopen (dst, "wb");
	if (!f2)
	{
		fclose (f1);
		return;
	}

	while (1)
	{
		l = fread (buffer, 1, sizeof(buffer), f1);
		if (!l)
			break;
		fwrite (buffer, 1, l, f2);
	}

	fclose (f1);
	fclose (f2);
}

/*
=================
FS_RenameFile
=================
*/
void FS_RenameFile (const char *oldPath, const char *newPath)
{
	FS_DPrintf("FS_RenameFile( %s, %s )\n", oldPath, newPath);

	if (rename(oldPath, newPath))
		FS_DPrintf("FS_RenameFile: failed to rename %s to %s\n", oldPath, newPath);
}

/*
=================
FS_DeleteFile
=================
*/
void FS_DeleteFile (const char *path)
{
	FS_DPrintf("FS_DeleteFile( %s )\n", path);

	if (remove(path))
		FS_DPrintf("FS_DeleteFile: failed to delete %s\n", path);
}

/*
=================
FS_LoadFile

"path" is relative to the Quake search path.
Returns file size or -1 if the file is not found.
A NULL buffer will just return the file size without loading.
=================
*/
int FS_LoadFile (const char *path, void **buffer)
{
	fileHandle_t	f;
	byte			*buf;
	int				size;

	buf = NULL;

	size = FS_FOpenFile(path, &f, FS_READ);
	if (size == -1 || size == 0)
	{
		if (buffer)
			*buffer = NULL;
		return size;
	}
	if (!buffer)
	{
		FS_FCloseFile(f);
		return size;
	}
	buf = Z_Malloc(size);
	*buffer = buf;

	FS_Read(buf, size, f);

	FS_FCloseFile(f);

	return size;
}

/*
=================
FS_FreeFile
=================
*/
void FS_FreeFile (void *buffer)
{
	if (!buffer)
	{
		FS_DPrintf("FS_FreeFile: NULL buffer\n");
		return;
	}
	Z_Free(buffer);
}

// Some incompetently packaged mods have these files in their paks!
char *pakfile_ignore_names[] =
{
	"save/",
	"scrnshot/",
	"screenshots/",
	"autoexec.cfg",
	"kmq2config.cfg",
	0
};

// These files are sometimes inside paks, but should be loaded externally first
char *pakfile_tryExtFirst_names[] =
{
	"players/",
	"maps.lst",
	0
};

/*
=================
FS_FileInPakBlacklist

Checks against a blacklist to see if a file
should not be loaded from a pak.
=================
*/
qboolean FS_FileInPakBlacklist (const char *filename, qboolean isPk3)
{
	int			i;
	char		*compare;
	qboolean	ignore = false;
	qboolean	loadExtFirst = false;

	compare = (char *)filename;
	if (compare[0] == '/')	// remove leading slash
		compare++;

	for (i=0; pakfile_ignore_names[i]; i++) {
		if ( !Q_strncasecmp(compare, pakfile_ignore_names[i], strlen(pakfile_ignore_names[i])) )
			ignore = true;
		// Ogg files can't load from .paks
	//	if ( !isPk3 && !strcmp(COM_FileExtension(compare), "ogg") )
	//		ignore = true;
	}
	if (!ignore)	// see if a file should be loaded from outside paks first
	{
		for (i=0; pakfile_tryExtFirst_names[i]; i++) {
			if ( !Q_strncasecmp(compare, pakfile_tryExtFirst_names[i], strlen(pakfile_tryExtFirst_names[i])) )
				loadExtFirst = true;
		}
		if (loadExtFirst)
		{
			if (FS_LocalFileExists(compare)) {
			//	Com_Printf ("FS_LoadPAK: file %s in pack is ignored in favor of external file first.\n", filename);
				ignore = true;
			}
		}
	}

//	if (ignore)
//		Com_Printf ("FS_LoadPAK: file %s blacklisted!\n", filename);
//	else if ( !strncmp (filename, "save/", 5) )
//		Com_Printf ("FS_LoadPAK: file %s not blacklisted.\n", filename);
	return ignore;
}


#ifdef BINARY_PACK_SEARCH
/*
=================
FS_PakFileCompare
 
Used for sorting pak entries by hash
=================
*/
unsigned int *nameHashes = NULL;
int FS_PakFileCompare (const void *f1, const void *f2)
{
	if (!nameHashes)
		return 1;

	return (nameHashes[*((int *)(f1))] - nameHashes[*((int *)(f2))]);
}
#endif	// BINARY_PACK_SEARCH


/*
=================
FS_LoadPAK
 
Takes an explicit (not game tree related) path to a pack file.

Loads the header and directory, adding the files at the beginning of
the list so they override previous pack files.
=================
*/
fsPack_t *FS_LoadPAK (const char *packPath)
{
	int				numFiles, i;
	fsPackFile_t	*files;
	fsPack_t		*pack;
	FILE			*handle;
	dpackheader_t		header;
	dpackfile_t		info[MAX_FILES_IN_PACK];
	unsigned		contentFlags = 0;
#ifdef BINARY_PACK_SEARCH
	int				*sortIndices;
	unsigned int	*sortHashes;
#endif	// BINARY_PACK_SEARCH

	handle = fopen(packPath, "rb");
	if (!handle)
		return NULL;

	fread(&header, 1, sizeof(dpackheader_t), handle);
	
	if (LittleLong(header.ident) != IDPAKHEADER)
	{
		fclose(handle);
		Com_Error(ERR_FATAL, "FS_LoadPAK: %s is not a pack file", packPath);
	}

	header.dirofs = LittleLong(header.dirofs);
	header.dirlen = LittleLong(header.dirlen);

	numFiles = header.dirlen / sizeof(dpackfile_t);
	if (numFiles > MAX_FILES_IN_PACK || numFiles == 0)
	{
		fclose(handle);
		Com_Error(ERR_FATAL, "FS_LoadPAK: %s has %i files", packPath, numFiles);
	}

	files = Z_Malloc(numFiles * sizeof(fsPackFile_t));

	fseek(handle, header.dirofs, SEEK_SET);
	fread(info, 1, header.dirlen, handle);

#ifdef BINARY_PACK_SEARCH
	// create sort table
	sortIndices = Z_Malloc(numFiles * sizeof(int));
	sortHashes = Z_Malloc(numFiles * sizeof(unsigned));
	nameHashes = sortHashes;
	for (i = 0; i < numFiles; i++)
	{
		sortIndices[i] = i;
		sortHashes[i] = Com_HashFileName(info[i].name, 0, false);
	}
	qsort((void *)sortIndices, numFiles, sizeof(int), FS_PakFileCompare);

	// Parse the directory
	for (i = 0; i < numFiles; i++)
	{
	//	strncpy(files[i].name, info[sortIndices[i]].name);
		Q_strncpyz(files[i].name, sizeof(files[i].name), info[sortIndices[i]].name);
		files[i].hash = sortHashes[sortIndices[i]];
		files[i].offset = LittleLong(info[sortIndices[i]].filepos);
		files[i].size = LittleLong(info[sortIndices[i]].filelen);
		files[i].ignore = FS_FileInPakBlacklist(files[i].name, false);	// check against pak loading blacklist
		if (!files[i].ignore)	// add type flag for this file
			contentFlags |= FS_TypeFlagForPakItem(files[i].name);
	}

	// free sort table
	Z_Free (sortIndices);
	Z_Free (sortHashes);
	nameHashes = NULL;
#else	// Parse the directory
	for (i = 0; i < numFiles; i++)
	{
	//	strncpy(files[i].name, info[i].name);
		Q_strncpyz(files[i].name, sizeof(files[i].name), info[i].name);
		files[i].hash = Com_HashFileName(info[i].name, 0, false);	// Added to speed up seaching
		files[i].offset = LittleLong(info[i].filepos);
		files[i].size = LittleLong(info[i].filelen);
		files[i].ignore = FS_FileInPakBlacklist(info[i].name, false);	// check against pak loading blacklist
		if (!files[i].ignore)	// add type flag for this file
			contentFlags |= FS_TypeFlagForPakItem(files[i].name);
	}
#endif	// BINARY_PACK_SEARCH

	pack = Z_Malloc(sizeof(fsPack_t));
//	strncpy(pack->name, packPath);
	Q_strncpyz(pack->name, sizeof(pack->name), packPath);
	pack->pak = handle;
	pack->pk3 = NULL;
	pack->numFiles = numFiles;
	pack->files = files;
	pack->contentFlags = contentFlags;

	return pack;
}

/*
=================
FS_AddPAKFile

Adds a Pak file to the searchpath
=================
*/
void FS_AddPAKFile (const char *packPath, qboolean isProtected)
{
	fsSearchPath_t	*search;
	fsPack_t		*pack;

    pack = FS_LoadPAK (packPath);
    if (!pack)
        return;
	pack->isProtectedPak = isProtected;	// From Yamagi Q2
    search = Z_Malloc (sizeof(fsSearchPath_t));
    search->pack = pack;
    search->next = fs_searchPaths;
    fs_searchPaths = search;
}

/*
=================
FS_LoadPK3

Takes an explicit (not game tree related) path to a pack file.

Loads the header and directory, adding the files at the beginning of
the list so they override previous pack files.
=================
*/
fsPack_t *FS_LoadPK3 (const char *packPath)
{
	int				numFiles, i = 0;
	fsPackFile_t	*files;
	fsPack_t		*pack;
	unzFile			*handle;
	unz_global_info	global;
	unz_file_info	info;
	int				status;
	unsigned		contentFlags = 0;
	char			fileName[MAX_QPATH];
#ifdef BINARY_PACK_SEARCH
	fsPackFile_t	*tmpFiles;
	int				*sortIndices;
	unsigned int	*sortHashes;
#endif	// BINARY_PACK_SEARCH

	handle = unzOpen(packPath);
	if (!handle)
		return NULL;

	if (unzGetGlobalInfo(handle, &global) != UNZ_OK)
	{
		unzClose(handle);
		Com_Error(ERR_FATAL, "FS_LoadPK3: %s is not a pack file", packPath);
	}
	numFiles = global.number_entry;
	if (numFiles > MAX_FILES_IN_PACK || numFiles == 0)
	{
		unzClose(handle);
		Com_Error(ERR_FATAL, "FS_LoadPK3: %s has %i files", packPath, numFiles);
	}
	files = Z_Malloc(numFiles * sizeof(fsPackFile_t));

#ifdef BINARY_PACK_SEARCH
	// create sort table
	tmpFiles = Z_Malloc(numFiles * sizeof(fsPackFile_t));
	sortIndices = Z_Malloc(numFiles * sizeof(int));
	sortHashes = Z_Malloc(numFiles * sizeof(unsigned));
	nameHashes = sortHashes;	

	// Parse the directory
	status = unzGoToFirstFile(handle);
	while (status == UNZ_OK)
	{
		fileName[0] = 0;
		unzGetCurrentFileInfo(handle, &info, fileName, MAX_QPATH, NULL, 0, NULL, 0);
		sortIndices[i] = i;
	//	strncpy(tmpFiles[i].name, fileName);
		Q_strncpyz(tmpFiles[i].name, sizeof(tmpFiles[i].name), fileName);
		tmpFiles[i].hash = sortHashes[i] = Com_HashFileName(fileName, 0, false);	// Added to speed up seaching
		tmpFiles[i].offset = -1;		// Not used in ZIP files
		tmpFiles[i].size = info.uncompressed_size;
		tmpFiles[i].ignore = FS_FileInPakBlacklist(fileName, true);	// check against pak loading blacklist
		if (!tmpFiles[i].ignore)	// add type flag for this file
			contentFlags |= FS_TypeFlagForPakItem(tmpFiles[i].name);
		i++;
		status = unzGoToNextFile(handle);
	}

	// sort by hash and copy to final file table
	qsort((void *)sortIndices, numFiles, sizeof(int), FS_PakFileCompare);
	for (i=0; i < numFiles; i++)
	{
	//	strncpy(files[i].name, tmpFiles[sortIndices[i]].name);
		Q_strncpyz(files[i].name, sizeof(files[i].name), tmpFiles[sortIndices[i]].name);
		files[i].hash = tmpFiles[sortIndices[i]].hash;
		files[i].offset = tmpFiles[sortIndices[i]].offset;
		files[i].size = tmpFiles[sortIndices[i]].size;
		files[i].ignore = tmpFiles[sortIndices[i]].ignore;
	}

	// free sort table
	Z_Free (tmpFiles);
	Z_Free (sortIndices);
	Z_Free (sortHashes);
	nameHashes = NULL;
#else	// Parse the directory
	status = unzGoToFirstFile(handle);
	while (status == UNZ_OK)
	{
		fileName[0] = 0;
		unzGetCurrentFileInfo(handle, &info, fileName, MAX_QPATH, NULL, 0, NULL, 0);

	//	strncpy(files[i].name, fileName);
		Q_strncpyz(files[i].name, sizeof(files[i].name, fileName);
		files[i].hash = Com_HashFileName(fileName, 0, false);	// Added to speed up seaching
		files[i].offset = -1;		// Not used in ZIP files
		files[i].size = info.uncompressed_size;
		files[i].ignore = FS_FileInPakBlacklist(fileName, true);	// check against pak loading blacklist
		if (!files[i].ignore)	// add type flag for this file
			contentFlags |= FS_TypeFlagForPakItem(files[i].name);
		i++;

		status = unzGoToNextFile(handle);
	}
#endif	// BINARY_PACK_SEARCH

	pack = Z_Malloc(sizeof(fsPack_t));
//	strncpy(pack->name, packPath);
	Q_strncpyz(pack->name, sizeof(pack->name), packPath);
	pack->pak = NULL;
	pack->pk3 = handle;
	pack->numFiles = numFiles;
	pack->files = files;
	pack->contentFlags = contentFlags;

	return pack;
}

/*
=================
FS_AddPK3File

Adds a Pk3 file to the searchpath
=================
*/
void FS_AddPK3File (const char *packPath, qboolean isProtected)
{
	fsSearchPath_t	*search;
	fsPack_t		*pack;

    pack = FS_LoadPK3 (packPath);
    if (!pack)
        return;
	pack->isProtectedPak = isProtected;	// From Yamagi Q2
    search = Z_Malloc (sizeof(fsSearchPath_t));
    search->pack = pack;
    search->next = fs_searchPaths;
    fs_searchPaths = search;
}

/*
=================
FS_AddPaksInDirectory

Used by FS_AddGameDirectory() and FS_AddDownloadDirectory().
Loads and adds all the pack files found
(first numerically 0-99 and then in alphabetical order).
PK3 files are loaded later so they override PAK files.
=================
*/
void FS_AddPaksInDirectory (const char *dir)
{
	char	packPath[MAX_OSPATH];
	int		i, j;
	// VoiD -S- *.pak support
	char	findname[1024];
	char	**dirnames;
	int		ndirs;
	char	*tmp;
	// VoiD -E- *.pak support

	//
	// add any pak files in the format pak0.pak pak1.pak, ...
	//
	for (i=0; i<100; i++)    // Pooy - paks can now go up to 100
	{
		Com_sprintf (packPath, sizeof(packPath), "%s/pak%i.pak", dir, i);
		FS_AddPAKFile (packPath, ((i<10) ? true : false));	// pak0.pak is protected
	}
    //
    // NeVo - pak3's!
    // add any pk3 files in the format pak0.pk3 pak1.pk3, ...
    //
    for (i=0; i<100; i++)    // Pooy - paks can now go up to 100
    {
        Com_sprintf (packPath, sizeof(packPath), "%s/pak%i.pk3", dir, i);
        FS_AddPK3File (packPath, false);
    }

    for (i=0; i<2; i++)
    {	// NeVo - Set filetype
        switch (i) {
            case 0:
			default:
                // Standard Quake II pack file '.pak'
                Com_sprintf( findname, sizeof(findname), "%s/%s", dir, "*.pak" );
                break;
            case 1: 
                // Quake III pack file '.pk3'
                Com_sprintf( findname, sizeof(findname), "%s/%s", dir, "*.pk3" );
                break;
        }
		// VoiD -S- *.pack support
        tmp = findname;
        while ( *tmp != 0 )
        {
            if ( *tmp == '\\' )
                *tmp = '/';
            tmp++;
        }
        if ( ( dirnames = FS_ListFiles( findname, &ndirs, 0, 0 ) ) != 0 )
        {
            for ( j=0; j < ndirs-1; j++ )
            {	// don't reload numbered pak files
				int		k;
				char	buf[16];
				char	buf2[16];
				qboolean numberedpak = false;
				for (k=0; k<100; k++)
				{
					Com_sprintf( buf, sizeof(buf), "/pak%i.pak", k);
					Com_sprintf( buf2, sizeof(buf2), "/pak%i.pk3", k);
					if ( strstr(dirnames[j], buf) || strstr(dirnames[j], buf2)) {
						numberedpak = true;
						break;
					}
				}
				if (numberedpak)
					continue;
                if ( strrchr( dirnames[j], '/' ) )
                {
					if (i == 1)
						FS_AddPK3File (dirnames[j], false);
					else
						FS_AddPAKFile (dirnames[j], false);
                }
                free( dirnames[j] );
            }
            free( dirnames );
        }
        // VoiD -E- *.pack support
    } 
}

/*
=================
FS_AddGameDirectory

Sets fs_gamedir, adds the directory to the head of the path,
then loads any pack files in that path by calling FS_AddPaksInDirectory().
=================
*/
void FS_AddGameDirectory (const char *dir)
{
	fsSearchPath_t	*search;

	Q_strncpyz(fs_gamedir, sizeof(fs_gamedir), dir);

	//
	// Add the directory to the search path
	//
	search = Z_Malloc(sizeof(fsSearchPath_t));
	Q_strncpyz(search->path, sizeof(search->path), dir);
	search->path[sizeof(search->path)-1] = 0;
	search->next = fs_searchPaths;
	fs_searchPaths = search;

	//
	// Load pack files
	//
	FS_AddPaksInDirectory (dir);
}


#ifdef USE_SAVEGAMEDIR
/*
=================
FS_AddSaveGameDirectory

Adds the savegame directory to the head of the path.
Should only be called after the final FS_AddGameDirectory() call.
Sets fs_savegamedir, not fs_gamedir, and does not load any pack files.
=================
*/
void FS_AddSaveGameDirectory (const char *dir)
{
	fsSearchPath_t	*search;

	if (!dir)
		return;
	if (strlen(dir) < 1)	// catch 0-length string
		return;

	Com_sprintf (fs_savegamedir, sizeof(fs_savegamedir), "%s/%s", Sys_PrefDir(), dir);

	if (!Q_stricmp(fs_savegamedir, fs_gamedir))	// only add if different from fs_gamedir
		return;

	FS_CreatePath (va("%s/", fs_savegamedir));	// create savegamedir if it doesn't yet exist

	//
	// Add the directory to the search path
	//
	search = Z_Malloc(sizeof(fsSearchPath_t));
	Q_strncpyz(search->path, sizeof(search->path), fs_savegamedir);
	search->path[sizeof(search->path)-1] = 0;
	search->next = fs_searchPaths;
	fs_searchPaths = search;
}


/*
=================
FS_AddDownloadDirectory

Adds the download directory to the head of the path.
Should only be called after the final FS_AddGameDirectory() call.
Sets fs_downloaddir, not fs_gamedir, and loads any pack files
in that path by calling FS_AddPaksInDirectory().
=================
*/
void FS_AddDownloadDirectory (const char *dir)
{
	fsSearchPath_t	*search;

	if (!dir)
		return;
	if (strlen(dir) < 1)	// catch 0-length string
		return;

	Com_sprintf (fs_downloaddir, sizeof(fs_downloaddir), "%s/%s", Sys_DownloadDir(), dir);

	if (!Q_stricmp(fs_downloaddir, fs_gamedir))	// only add if different from fs_gamedir
		return;

	FS_CreatePath (va("%s/", fs_downloaddir));	//  create downloaddir if it doesn't yet exist

	//
	// Add the directory to the search path
	//
	search = Z_Malloc(sizeof(fsSearchPath_t));
	Q_strncpyz(search->path, sizeof(search->path), fs_downloaddir);
	search->path[sizeof(search->path)-1] = 0;
	search->next = fs_searchPaths;
	fs_searchPaths = search;

	//
	// Load pack files
	//
	FS_AddPaksInDirectory (dir);
}
#endif // USE_SAVEGAMEDIR


/*
=================
FS_NextPath

Allows enumerating all of the directories in the search path
=================
*/
char *FS_NextPath (const char *prevPath)
{
	fsSearchPath_t	*search;
	char			*prev, *firstPath;

	// only use fs_savegamedir if different from fs_gamedir
	if (!Q_stricmp(fs_savegamedir, fs_gamedir))
		firstPath = fs_gamedir;
	else
		firstPath = fs_savegamedir;

	if (!prevPath)
		return firstPath;	// was fs_gamedir

	prev = firstPath;	// was fs_gamedir
	for (search = fs_searchPaths; search; search = search->next)
	{
		if (search->pack)
			continue;

		if (prevPath == prev)
			return search->path;

		prev = search->path;
	}
	return NULL;
}


/*
=================
FS_NextGamePath

Allows enumerating all of the directories in the search path
Only called from Sys_GetGameAPI
Skips fs_savegamedir and fs_downloaddir,
so as not to load game library from there.
=================
*/
char *FS_NextGamePath (const char *prevPath)
{
	fsSearchPath_t	*search;
	char			*prev;

	if (!prevPath)
		return fs_gamedir;

	prev = fs_gamedir;
	for (search = fs_searchPaths; search; search = search->next)
	{
		if (search->pack)
			continue;

		// explicitly skip fs_savegamedir and fs_downloaddir (if different from fs_gamedir)
		if ( (strlen(search->path) > 0) &&
			(	((Q_stricmp(search->path, fs_savegamedir) == 0) && (Q_stricmp(fs_savegamedir, fs_gamedir) != 0)) ||
				((Q_stricmp(search->path, fs_downloaddir) == 0) && (Q_stricmp(fs_downloaddir, fs_gamedir) != 0)) ) )
			continue;

		if (prevPath == prev)
			return search->path;

		prev = search->path;
	}
	return NULL;
}


/*
=================
FS_Path_f
=================
*/
void FS_Path_f (void)
{
	fsSearchPath_t	*search;
	fsHandle_t		*handle;
	fsLink_t		*link;
	int				totalFiles = 0, i;

	Com_Printf("Current search path:\n");

	for (search = fs_searchPaths; search; search = search->next)
	{
		if (search->pack)
		{
			Com_Printf("%s (%i files)\n", search->pack->name, search->pack->numFiles);
			totalFiles += search->pack->numFiles;
		}
		else
			Com_Printf("%s\n", search->path);
	}

//	Com_Printf("\n");
	Com_Printf("Current game dir: %s\n", fs_gamedir);
#ifdef USE_SAVEGAMEDIR
	Com_Printf("Current savegame dir: %s\n", fs_savegamedir);
	Com_Printf("Current download dir: %s\n", fs_downloaddir);
#endif

	for (i = 0, handle = fs_handles; i < MAX_HANDLES; i++, handle++)
	{
		if (handle->file || handle->zip)
			Com_Printf("Handle %i: %s\n", i + 1, handle->name);
	}

	for (i = 0, link = fs_links; link; i++, link = link->next)
		Com_Printf("Link %i: %s -> %s\n", i, link->from, link->to);

	Com_Printf("-------------------------------------\n");

	Com_Printf("%i files in PAK/PK3 files\n\n", totalFiles);
}

/*
=================
FS_Startup

TODO: close open files for game dir
=================
*/
#if 0
void FS_Startup (void)
{
	if (strstr(fs_gamedirvar->string, "..") || strstr(fs_gamedirvar->string, ".")
		|| strstr(fs_gamedirvar->string, "/") || strstr(fs_gamedirvar->string, "\\")
		|| strstr(fs_gamedirvar->string, ":") || !fs_gamedirvar->string[0])
	{
		//Com_Printf("Invalid game directory\n");
		Cvar_ForceSet("game", BASEDIRNAME);
	}

	// Check for game override
	if (stricmp(fs_gamedirvar->string, fs_currentGame))
	{
		fsSearchPath_t	*next;
		fsPack_t		*pack;

		// Free up any current game dir info
		while (fs_searchPaths != fs_baseSearchPaths)
		{
			if (fs_searchPaths->pack)
			{
				pack = fs_searchPaths->pack;

				if (pack->pak)
					fclose(pack->pak);
				if (pack->pk3)
					unzClose(pack->pk3);

				Z_Free(pack->files);
				Z_Free(pack);
			}

			next = fs_searchPaths->next;
			Z_Free(fs_searchPaths);
			fs_searchPaths = next;
		}

		if (!stricmp(fs_gamedirvar->string, BASEDIRNAME))	// Don't add baseq2 again
		//	strncpy(fs_gamedir, fs_basedir->string);
			Q_strncpyz(fs_gamedir, sizeof(fs_gamedir), fs_basedir->string);
		else
		{
			// Add the directories
			FS_AddGameDirectory(va("%s/%s", fs_homepath->string, fs_gamedirvar->string));
		}
	}

//	strncpy(fs_currentGame, fs_gamedirvar->string);
	Q_strncpyz(fs_currentGame, sizeof(fs_currentGame), fs_gamedirvar->string);

	FS_Path_f();
}
#endif


#ifdef USE_SAVEGAMEDIR
/*
=================
FS_CopyConfigsToSavegameDir
=================
*/
void FS_CopyConfigsToSavegameDir (void)
{
	FILE	*kmq2ConfigFile;
	char	cfgPattern[MAX_OSPATH];
	char	*srcCfgPath;
	char	dstCfgPath[MAX_OSPATH];
	char	*cfgName;

	// check if fs_savegamedir and fs_gamedir are the same, so we don't try to copy the files over each other
	if (!Q_stricmp(FS_SaveGameDir(), fs_gamedir))
		return;

	// check if kmq2config.cfg exists in FS_SaveGameDir() so we can skip copying
	kmq2ConfigFile = fopen(va("%s/kmq2config.cfg", FS_SaveGameDir()), "rb");
	if (kmq2ConfigFile != NULL)
	{
		fclose(kmq2ConfigFile);
		return;
	}

	// create savegamedir if it doesn't yet exist
	FS_CreatePath (va("%s/", fs_savegamedir));

	Com_sprintf (cfgPattern, sizeof(cfgPattern), "%s/*.cfg", fs_gamedir);
	for (srcCfgPath = Sys_FindFirst(cfgPattern, 0, SFF_SUBDIR|SFF_HIDDEN|SFF_SYSTEM);
		srcCfgPath != NULL;
		srcCfgPath = Sys_FindNext (0, SFF_SUBDIR|SFF_HIDDEN|SFF_SYSTEM))
	{
		cfgName = strrchr(srcCfgPath, '/');
		if (cfgName == NULL) {
			continue;
		}
		++cfgName;	// move to after the '/'
		// Don't copy default.cfg, autoexec.cfg, or configs written by other engines
		// TODO: keep this up to date!
		// config.cfg, aprconfig.cfg, bqconfig.cfg, eglcfg.cfg, maxconfig.cfg, q2config.cfg, q2b_config.cfg, q2econfig.cfg, xpconfig.cfg, yq2.cfg
		if ( (strstr(cfgName, "config.cfg") && (Q_stricmp(cfgName, "kmq2config.cfg") != 0)) ||
			!Q_stricmp(cfgName, "default.cfg") || !Q_stricmp(cfgName, "autoexec.cfg") ||
			!Q_stricmp(cfgName, "eglcfg.cfg") || !Q_stricmp(cfgName, "yq2.cfg") ) {
			continue;
		}
		Com_sprintf (dstCfgPath, sizeof(dstCfgPath), "%s/%s", FS_SaveGameDir(), cfgName);
		FS_CopyFile (srcCfgPath, dstCfgPath);
	}
	Sys_FindClose();
}
#endif	// USE_SAVEGAMEDIR


/*
=================
FS_Init
=================
*/
void FS_Dir_f (void);
void FS_Link_f (void);
char *Sys_GetCurrentDirectory (void);

void FS_InitFilesystem (void)
{
	// init savegame/download dirs as null string
	fs_savegamedir[0] = '\0';
	fs_downloaddir[0] = '\0';

	// Register our commands and cvars
	Cmd_AddCommand("path", FS_Path_f);
	Cmd_AddCommand("link", FS_Link_f);
	Cmd_AddCommand("dir", FS_Dir_f);

	Com_Printf("\n----- Filesystem Initialization -----\n");

	// basedir <path>
	// allows the game to run from outside the data tree
#if defined(__linux__) || defined(__APPLE__) || defined(MACOSX)
	fs_basedir = Cvar_Get ("basedir", Sys_ExeDir(), CVAR_NOSET);
#else
	fs_basedir = Cvar_Get ("basedir", ".", CVAR_NOSET);
#endif
	Cvar_SetDescription ("basedir", "Sets the root folder where KMQuake2 mounts game directories.  Only settable from the command line with +set basedir <dir>.  Only change this if you want KMQ2 to run with data files outside the Quake2 folder.");

	// cddir <path>
	// Logically concatenates the cddir after the basedir for 
	// allows the game to run from outside the data tree
	fs_cddir = Cvar_Get("cddir", "", CVAR_NOSET);
	Cvar_SetDescription ("cddir", "Sets the path to where the data files on the game CD are.  Only settable from the command line with +set cddir <path>.  Only used if the full game install was not done.");
	if (fs_cddir->string[0])
		FS_AddGameDirectory (va("%s/"BASEDIRNAME, fs_cddir->string) );

	// start up with baseq2 by default
	FS_AddGameDirectory (va("%s/"BASEDIRNAME, fs_basedir->string) );
	// any set gamedirs will be freed up to here
	fs_baseSearchPaths = fs_searchPaths;

//	strncpy(fs_currentGame, BASEDIRNAME);
	Q_strncpyz(fs_currentGame, sizeof(fs_currentGame), BASEDIRNAME);

	// check for game override
	fs_homepath = Cvar_Get("homepath", Sys_GetCurrentDirectory(), CVAR_NOSET);
	Cvar_SetDescription ("homepath", "Current directory that KMQuake2 is running in.  This is a NOSET value.");
	fs_debug = Cvar_Get("fs_debug", "0", 0);
	Cvar_SetDescription ("fs_debug", "Enables console output of filesystem operations.");
	fs_roguegame = Cvar_Get("roguegame", "0", CVAR_LATCH);
	Cvar_SetDescription ("roguegame", "Enables Rogue-specific features in start server menu when not running under the Rogue gamedir.");
	fs_basegamedir = Cvar_Get ("basegame", "", CVAR_LATCH);
	Cvar_SetDescription ("basegame", "Additional game data path.  Use in conjunction with game to load content from one mod while running another.");
	fs_basegamedir2 = Cvar_Get ("basegame2", "", CVAR_LATCH);
	Cvar_SetDescription ("basegame2", "Second additional game data path.  Use in conjunction with basegame and game to load content from two mods while running another.");
	fs_basegamedir3 = Cvar_Get ("basegame3", "", CVAR_LATCH);	// Knightmare added
	Cvar_SetDescription ("basegame3", "Third additional game data path.  Use in conjunction with basegame2, basegame, and game to load content from three mods while running another.");
	fs_gamedirvar = Cvar_Get ("game", "", CVAR_LATCH|CVAR_SERVERINFO|CVAR_SAVE_IGNORE);
	Cvar_SetDescription ("game", "Sets the mod/game dir.  Only set this from the command line with \"+set game <moddir>\".  Use the \"changegame\" command to change game folders while KMQuake2 is running.");

	// set up pref dir under Win32 here
#ifdef _WIN32
#ifdef NOTTHIRTYFLIGHTS
	// whether to use user profile dir for savegames, configs, screenshots, etc
	if ( COM_CheckParm ("-portable") || COM_CheckParm ("+portable") || (FS_LoadFile("portable.cfg", NULL) != -1) )
		win_use_profile_dir = Cvar_Get ("win_use_profile_dir", "0", CVAR_NOSET);
	else
		win_use_profile_dir = Cvar_Get ("win_use_profile_dir", "1", CVAR_NOSET);
	Cvar_SetDescription ("win_use_profile_dir", "Internal value that determines whether to use the <userprofile>/Saved Games/KMQuake2 folder on Windows Vista and later for config files, saved games, screenshots, etc.  On Win 2000/XP it uses Documents/My Games/KMQuake2.  To disable this, add -portable to the command line or add an empty portable.cfg file in the Quake2/baseq2 folder.");
#endif

	Sys_InitPrefDir ();	// set up pref dir now instead of calling a function every time it's needed
#endif

	// set our savegame/download dirs with Sys_PrefDir() and baseq2
#ifdef USE_SAVEGAMEDIR
	FS_AddDownloadDirectory (BASEDIRNAME);
	FS_AddSaveGameDirectory (BASEDIRNAME);
//	Com_sprintf (fs_savegamedir, sizeof(fs_savegamedir), "%s/%s", Sys_PrefDir(), BASEDIRNAME);
//	Com_sprintf (fs_downloaddir, sizeof(fs_downloaddir), "%s/%s", Sys_DownloadDir(), BASEDIRNAME);
#else
	Q_strncpyz(fs_savegamedir, sizeof(fs_savegamedir), fs_gamedir);
	Q_strncpyz(fs_downloaddir, sizeof(fs_downloaddir), fs_gamedir);
#endif	// USE_SAVEGAMEDIR

	// check and load game directory
	if (fs_gamedirvar->string[0])
		FS_SetGamedir (fs_gamedirvar->string);

#ifdef USE_SAVEGAMEDIR
	// copy over configs from gamedir to savegamedir if it's empty
	FS_CopyConfigsToSavegameDir ();
#endif	// USE_SAVEGAMEDIR

	FS_Path_f(); // output path data
}

/*
=================
FS_Shutdown
=================
*/
void FS_Shutdown (void)
{
	fsHandle_t		*handle;
	fsSearchPath_t	*next;
	fsPack_t		*pack;
	int				i;

	Cmd_RemoveCommand("dir");
	//Cmd_RemoveCommand("fdir");
	Cmd_RemoveCommand("link");
	Cmd_RemoveCommand("path");

	// Close all files
	for (i = 0, handle = fs_handles; i < MAX_HANDLES; i++, handle++)
	{
		if (handle->file)
			fclose(handle->file);
		if (handle->zip)
		{
			unzCloseCurrentFile(handle->zip);
			unzClose(handle->zip);
		}
	}

	// Free the search paths
	while (fs_searchPaths)
	{
		if (fs_searchPaths->pack)
		{
			pack = fs_searchPaths->pack;

			if (pack->pak)
				fclose(pack->pak);
			if (pack->pk3)
				unzClose(pack->pk3);

			Z_Free(pack->files);
			Z_Free(pack);
		}
		next = fs_searchPaths->next;
		Z_Free(fs_searchPaths);
		fs_searchPaths = next;
	}
}


/*
================
FS_SetGamedir

Sets the gamedir and path to a different directory.
================
*/
void FS_SetGamedir (const char *dir)
{
	fsSearchPath_t	*next;
	qboolean		basegame1_loaded = false, basegame2_loaded = false;

	if (strstr(dir, "..") || strstr(dir, "/")
		|| strstr(dir, "\\") || strstr(dir, ":") )
	{
		Com_Printf ("Gamedir should be a single filename, not a path\n");
		return;
	}

	// Knightmare- check basegame var
	if ( fs_basegamedir->string[0] )
	{
		if (strstr(fs_basegamedir->string, "..") || strstr(fs_basegamedir->string, "/")
			|| strstr(fs_basegamedir->string, "\\") || strstr(fs_basegamedir->string, ":"))
		{
			Cvar_Set ("basegame", "");
			Com_Printf ("Basegame should be a single filename, not a path\n");
		}
		if ( !Q_stricmp(fs_basegamedir->string, BASEDIRNAME) || !Q_stricmp(fs_basegamedir->string, (char *)dir) )
		{
			Cvar_Set ("basegame", "");
			Com_Printf ("Basegame should not be the same as "BASEDIRNAME" or gamedir.\n");
		}
	}

	// Knightmare- check basegame2 var
	if ( fs_basegamedir2->string[0] )
	{
		if (strstr(fs_basegamedir2->string, "..") || strstr(fs_basegamedir2->string, "/")
			|| strstr(fs_basegamedir2->string, "\\") || strstr(fs_basegamedir2->string, ":") )
		{
			Cvar_Set ("basegame2", "");
			Com_Printf ("Basegame2 should be a single filename, not a path\n");
		}
		if ( !Q_stricmp(fs_basegamedir2->string, BASEDIRNAME) || !Q_stricmp(fs_basegamedir2->string, (char *)dir)
			|| !Q_stricmp(fs_basegamedir2->string, fs_basegamedir->string) )
		{
			Cvar_Set ("basegame2", "");
			Com_Printf ("Basegame2 should not be the same as "BASEDIRNAME", gamedir, or basegame.\n");
		}
	}

	// Knightmare- check basegame3 var
	if ( fs_basegamedir3->string[0] )
	{
		if (strstr(fs_basegamedir3->string, "..") || strstr(fs_basegamedir3->string, "/")
			|| strstr(fs_basegamedir3->string, "\\") || strstr(fs_basegamedir3->string, ":") )
		{
			Cvar_Set ("basegame3", "");
			Com_Printf ("Basegame3 should be a single filename, not a path.\n");
		}
		if ( !Q_stricmp(fs_basegamedir3->string, BASEDIRNAME) || !Q_stricmp(fs_basegamedir3->string, (char *)dir)
			|| !Q_stricmp(fs_basegamedir3->string, fs_basegamedir->string) || !Q_stricmp(fs_basegamedir3->string, fs_basegamedir2->string) )
		{
			Cvar_Set ("basegame3", "");
			Com_Printf ("Basegame3 should not be the same as "BASEDIRNAME", gamedir, basegame, or basegame2.\n");
		}
	}

	//
	// free up any current game dir info
	//
	while (fs_searchPaths != fs_baseSearchPaths)
	{
		if (fs_searchPaths->pack)
		{
			if (fs_searchPaths->pack->pak)
				fclose(fs_searchPaths->pack->pak);
			if (fs_searchPaths->pack->pk3)
				unzClose(fs_searchPaths->pack->pk3);
			Z_Free (fs_searchPaths->pack->files);
			Z_Free (fs_searchPaths->pack);
		}
		next = fs_searchPaths->next;
		Z_Free (fs_searchPaths);
		fs_searchPaths = next;
	}

	//
	// flush all data, so it will be forced to reload
	//
	if (dedicated && !dedicated->integer)
		Cbuf_AddText ("vid_restart\nsnd_restart\n");

	if (*dir == 0)	// Knightmare- set to basedir if a blank dir is passed
		Com_sprintf (fs_gamedir, sizeof(fs_gamedir), "%s/"BASEDIRNAME, fs_basedir->string);
	else
		Com_sprintf (fs_gamedir, sizeof(fs_gamedir), "%s/%s", fs_basedir->string, dir);

	if (!strcmp(dir,BASEDIRNAME) || (*dir == 0))
	{
		Cvar_FullSet ("gamedir", "", CVAR_SERVERINFO|CVAR_NOSET|CVAR_SAVE_IGNORE);
		Cvar_FullSet ("game", "", CVAR_LATCH|CVAR_SERVERINFO|CVAR_SAVE_IGNORE);
		// set our savegame/download dirs with Sys_PrefDir() and baseq2
#ifdef USE_SAVEGAMEDIR
		FS_AddDownloadDirectory (BASEDIRNAME);
		FS_AddSaveGameDirectory (BASEDIRNAME);
	//	Com_sprintf (fs_savegamedir, sizeof(fs_savegamedir), "%s/%s", Sys_PrefDir(), BASEDIRNAME);
	//	Com_sprintf (fs_downloaddir, sizeof(fs_downloaddir), "%s/%s", Sys_DownloadDir(), BASEDIRNAME);
#else
		Q_strncpyz(fs_savegamedir, sizeof(fs_savegamedir), fs_gamedir);
		Q_strncpyz(fs_downloaddir, sizeof(fs_downloaddir), fs_gamedir);
#endif	// USE_SAVEGAMEDIR
	}
	else
	{
		// check and load base game directory (so mods can be based upon other mods)
		if ( fs_basegamedir->string[0] )
		{
		//	Com_Printf("Adding basegame path %s/%s\n", fs_basedir->string, fs_basegamedir->string);
			if (fs_cddir->string[0])
				FS_AddGameDirectory (va("%s/%s", fs_cddir->string, fs_basegamedir->string) );
			FS_AddGameDirectory (va("%s/%s", fs_basedir->string, fs_basegamedir->string) );
			basegame1_loaded = true;
		}

		// second basegame so mods can utilize both Rogue and Xatrix assets
		if ( basegame1_loaded && fs_basegamedir2->string[0] )
		{
		//	Com_Printf("Adding basegame2 path %s/%s\n", fs_basedir->string, fs_basegamedir2->string);
			if (fs_cddir->string[0])
				FS_AddGameDirectory (va("%s/%s", fs_cddir->string, fs_basegamedir2->string) );
			FS_AddGameDirectory (va("%s/%s", fs_basedir->string, fs_basegamedir2->string) );
			basegame2_loaded = true;
		}

		// third basegame so mods can utilize Rogue, Xatrix, and Zaero assets
		if ( basegame1_loaded && basegame2_loaded && fs_basegamedir3->string[0] )
		{
		//	Com_Printf("Adding basegame3 path %s/%s\n", fs_basedir->string, fs_basegamedir3->string);
			if (fs_cddir->string[0])
				FS_AddGameDirectory (va("%s/%s", fs_cddir->string, fs_basegamedir3->string) );
			FS_AddGameDirectory (va("%s/%s", fs_basedir->string, fs_basegamedir3->string) );
		}

		Cvar_FullSet ("gamedir", (char *)dir, CVAR_SERVERINFO|CVAR_NOSET|CVAR_SAVE_IGNORE);
		if (fs_cddir->string[0])
			FS_AddGameDirectory (va("%s/%s", fs_cddir->string, dir) );
		FS_AddGameDirectory (va("%s/%s", fs_basedir->string, dir) );

		// set our savegame/download dirs with Sys_PrefDir() and baseq2
#ifdef USE_SAVEGAMEDIR
		FS_AddDownloadDirectory (dir);
		FS_AddSaveGameDirectory (dir);
	//	Com_sprintf (fs_savegamedir, sizeof(fs_savegamedir), "%s/%s", Sys_PrefDir(), dir);
	//	Com_sprintf (fs_downloaddir, sizeof(fs_downloaddir), "%s/%s", Sys_DownloadDir(), dir);
#else
		Q_strncpyz(fs_savegamedir, sizeof(fs_savegamedir), fs_gamedir);
		Q_strncpyz(fs_downloaddir, sizeof(fs_downloaddir), fs_gamedir);
#endif	// USE_SAVEGAMEDIR
	}
}


/*
================
FS_Link_f

Creates a filelink_t
================
*/
void FS_Link_f (void)
{
	fsLink_t	*l, **prev;

	if (Cmd_Argc() != 3)
	{
		Com_Printf ("USAGE: link <from> <to>\n");
		return;
	}

	// see if the link already exists
	prev = &fs_links;
	for (l=fs_links ; l ; l=l->next)
	{
		if (!strcmp (l->from, Cmd_Argv(1)))
		{
			Z_Free (l->to);
			if (!strlen(Cmd_Argv(2)))
			{	// delete it
				*prev = l->next;
				Z_Free (l->from);
				Z_Free (l);
				return;
			}
			l->to = CopyString (Cmd_Argv(2));
			return;
		}
		prev = &l->next;
	}

	// create a new link
	l = Z_Malloc(sizeof(*l));
	l->next = fs_links;
	fs_links = l;
	l->from = CopyString(Cmd_Argv(1));
	l->length = (int)strlen(l->from);
	l->to = CopyString(Cmd_Argv(2));
}


/*
=================
FS_ExecConfigs

Executes default.cfg and kmq2config.cfg
Encapsulated to avoid redundancy
=================
*/
void FS_ExecConfigs (qboolean unbind)
{
//	char	*cfgfile;

	if (unbind) {
		Cbuf_AddText ("unbindall\n");
	}
	Cbuf_AddText ("exec default.cfg\n");
	Cbuf_AddText ("exec kmq2config.cfg\n");

	// Look for kmq2config.cfg, if not there, try config.cfg
	// Removed because some settings in existing config.cfgs may cause problems
/*	FS_LoadFile ("kmq2config.cfg", (void **)&cfgfile);
	if (cfgfile)
	{
		Cbuf_AddText ("exec kmq2config.cfg\n");
		FS_FreeFile (cfgfile);
	}
	else
		Cbuf_AddText ("exec config.cfg\n");
*/
}


/*
=============
FS_ExecAutoexec
=============
*/
void FS_ExecAutoexec (void)
{
	char	*dir;
	char	name[MAX_OSPATH];

	dir = Cvar_VariableString("gamedir");
	if (*dir) {
		Com_sprintf(name, sizeof(name), "%s/%s/autoexec.cfg", fs_basedir->string, dir);
	}
	else {
		Com_sprintf(name, sizeof(name), "%s/%s/autoexec.cfg", fs_basedir->string, BASEDIRNAME); 
	}
	if ( Sys_FindFirst(name, 0, SFF_SUBDIR | SFF_HIDDEN | SFF_SYSTEM) ) {
		Cbuf_AddText ("exec autoexec.cfg\n");
	}
	Sys_FindClose ();
}

/*
================
FS_ListFiles
================
*/
char **FS_ListFiles (const char *findname, int *numfiles, unsigned musthave, unsigned canthave)
{
	char *s;
	int nfiles = 0;
	char **list = 0;

	s = Sys_FindFirst( (char *)findname, musthave, canthave );
	while ( s )
	{
		if ( s[strlen(s)-1] != '.' )
			nfiles++;
		s = Sys_FindNext( musthave, canthave );
	}
	Sys_FindClose ();

	if ( !nfiles ) {
		*numfiles = 0;
		return NULL;
	}

	nfiles++; // add space for a guard
	*numfiles = nfiles;

	list = malloc( sizeof( char * ) * nfiles );
	memset( list, 0, sizeof( char * ) * nfiles );

	s = Sys_FindFirst( (char *)findname, musthave, canthave );
	nfiles = 0;
	while ( s )
	{
		if ( s[strlen(s)-1] != '.' )
		{
			list[nfiles] = strdup( s );
#ifdef _WIN32
			strlwr( list[nfiles] );
#endif
			nfiles++;
		}
		s = Sys_FindNext( musthave, canthave );
	}
	Sys_FindClose ();

	return list;
}

/*
=================
FS_FreeFileList
=================
*/
void FS_FreeFileList (char **list, int n)
{
	int i;

	for (i = 0; i < n; i++)
	{
		if (list && list[i])
		{
			free(list[i]);
			list[i] = 0;
		}
	}
	free(list);
}

/*
=================
FS_ItemInList
=================
*/
qboolean FS_ItemInList (const char *check, int num, const char **list)
{
	int		i;

	if (!check || !list)
		return false;
	for (i=0; i<num; i++)
	{
		if (!list[i])
			continue;
		if ( !Q_strcasecmp((char *)check, (char *)list[i]) )
			return true;
	}
	return false;
}

/*
=================
FS_InsertInList
=================
*/
void FS_InsertInList (char **list, const char *insert, int len, int start)
{
	int		i;

	if (!list || !insert) return;
	if (len < 1 || start < 0) return;
//	if (start >= len) return;
	if (start > len) return;

	for (i=start; i<len; i++)
	{
		if (!list[i])
		{
			list[i] = strdup(insert);
			return;
		}
	}
	list[len] = strdup(insert);
}

/*
================
FS_Dir_f
================
*/
void FS_Dir_f (void)
{
	char	*path = NULL;
	char	findname[1024];
	char	wildcard[1024] = "*.*";
	char	**dirnames;
	int		ndirs;

	if ( Cmd_Argc() != 1 )
	{
	//	strncpy(wildcard, Cmd_Argv(1));
		Q_strncpyz (wildcard, sizeof(wildcard), Cmd_Argv(1));
	}

	while ( ( path = FS_NextPath( path ) ) != NULL )
	{
		char *tmp = findname;

		Com_sprintf( findname, sizeof(findname), "%s/%s", path, wildcard );

		while ( *tmp != 0 )
		{
			if ( *tmp == '\\' ) 
				*tmp = '/';
			tmp++;
		}
		Com_Printf( "Directory of %s\n", findname );
		Com_Printf( "----\n" );

		if ( ( dirnames = FS_ListFiles( findname, &ndirs, 0, 0 ) ) != 0 )
		{
			int i;

			for ( i = 0; i < ndirs-1; i++ )
			{
				if ( strrchr( dirnames[i], '/' ) )
					Com_Printf( "%s\n", strrchr( dirnames[i], '/' ) + 1 );
				else
					Com_Printf( "%s\n", dirnames[i] );

				free( dirnames[i] );
			}
			free( dirnames );
		}
		Com_Printf( "\n" );
	};
}