Fix line endings. WHAMMY.

1 files changed, 1415 insertions, 1415 deletions

diff --git a/mp/src/public/filesystem_init.cpp b/mp/src/public/filesystem_init.cpp
index 2f8366e4..08e8da17 100644
--- a/mp/src/public/filesystem_init.cpp
+++ b/mp/src/public/filesystem_init.cpp
@@ -1,1415 +1,1415 @@
-//========= Copyright Valve Corporation, All rights reserved. ============//

-//

-// Purpose: 

-//

-//=============================================================================

-

-#undef PROTECTED_THINGS_ENABLE

-#undef PROTECT_FILEIO_FUNCTIONS

-#ifndef POSIX

-#undef fopen

-#endif

-

-#if defined( _WIN32 ) && !defined( _X360 )

-#include <windows.h>

-#include <direct.h>

-#include <io.h>

-#include <process.h>

-#elif defined( POSIX )

-#include <unistd.h>

-#define _chdir chdir

-#define _access access

-#endif

-#include <stdio.h>

-#include <sys/stat.h>

-#include "tier1/strtools.h"

-#include "tier1/utlbuffer.h"

-#include "filesystem_init.h"

-#include "tier0/icommandline.h"

-#include "KeyValues.h"

-#include "appframework/IAppSystemGroup.h"

-#include "tier1/smartptr.h"

-#if defined( _X360 )

-#include "xbox\xbox_win32stubs.h"

-#endif

-

-// memdbgon must be the last include file in a .cpp file!!!

-#include <tier0/memdbgon.h>

-

-#if !defined( _X360 )

-#define GAMEINFO_FILENAME			"gameinfo.txt"

-#else

-// The .xtx file is a TCR requirement, as .txt files cannot live on the DVD.

-// The .xtx file only exists outside the zips (same as .txt and is made during the image build) and is read to setup the search paths.

-// So all other code should be able to safely expect gameinfo.txt after the zip is mounted as the .txt file exists inside the zips.

-// The .xtx concept is private and should only have to occurr here. As a safety measure, if the .xtx file is not found

-// a retry is made with the original .txt name

-#define GAMEINFO_FILENAME			"gameinfo.xtx"

-#endif

-#define GAMEINFO_FILENAME_ALTERNATE	"gameinfo.txt"

-

-static char g_FileSystemError[256];

-static bool s_bUseVProjectBinDir = false;

-static FSErrorMode_t g_FileSystemErrorMode = FS_ERRORMODE_VCONFIG;

-

-// Call this to use a bin directory relative to VPROJECT

-void FileSystem_UseVProjectBinDir( bool bEnable )

-{

-	s_bUseVProjectBinDir = bEnable;

-}

-

-// This class lets you modify environment variables, and it restores the original value

-// when it goes out of scope.

-class CTempEnvVar

-{

-public:

-	CTempEnvVar( const char *pVarName )

-	{

-		m_bRestoreOriginalValue = true;

-		m_pVarName = pVarName;

-

-		const char *pValue = NULL;

-

-#ifdef _WIN32

-		// Use GetEnvironmentVariable instead of getenv because getenv doesn't pick up changes

-		// to the process environment after the DLL was loaded.

-		char szBuf[ 4096 ];

-		if ( GetEnvironmentVariable( m_pVarName, szBuf, sizeof( szBuf ) ) != 0)

-		{

-			pValue = szBuf;

-		}

-#else

-		// LINUX BUG: see above

-		pValue = getenv( pVarName );

-#endif 

-

-		if ( pValue )

-		{

-			m_bExisted = true;

-			m_OriginalValue.SetSize( strlen( pValue ) + 1 );

-			memcpy( m_OriginalValue.Base(), pValue, m_OriginalValue.Count() );

-		}

-		else

-		{

-			m_bExisted = false;

-		}

-	}

-

-	~CTempEnvVar()

-	{

-		if ( m_bRestoreOriginalValue )

-		{

-			// Restore the original value.

-			if ( m_bExisted )

-			{

-				SetValue( "%s", m_OriginalValue.Base() );

-			}

-			else

-			{

-				ClearValue();

-			}

-		}

-	}

-

-	void SetRestoreOriginalValue( bool bRestore )

-	{

-		m_bRestoreOriginalValue = bRestore;

-	}

-

-	int GetValue(char *pszBuf, int nBufSize )

-	{

-		if ( !pszBuf || ( nBufSize <= 0 ) )

-			return 0;

-	

-#ifdef _WIN32

-		// Use GetEnvironmentVariable instead of getenv because getenv doesn't pick up changes

-		// to the process environment after the DLL was loaded.

-		return GetEnvironmentVariable( m_pVarName, pszBuf, nBufSize );

-#else

-		// LINUX BUG: see above

-		const char *pszOut = getenv( m_pVarName );

-		if ( !pszOut )

-		{

-			*pszBuf = '\0';

-			return 0;

-		}

-

-		Q_strncpy( pszBuf, pszOut, nBufSize );		

-		return Q_strlen( pszBuf );

-#endif

-	}

-

-	void SetValue( const char *pValue, ... )

-	{

-		char valueString[4096];

-		va_list marker;

-		va_start( marker, pValue );

-		Q_vsnprintf( valueString, sizeof( valueString ), pValue, marker );

-		va_end( marker );

-

-#ifdef WIN32

-		char str[4096];

-		Q_snprintf( str, sizeof( str ), "%s=%s", m_pVarName, valueString );

-		_putenv( str );

-#else

-		setenv( m_pVarName, valueString, 1 );

-#endif

-	}

-

-	void ClearValue()

-	{

-#ifdef WIN32

-		char str[512];

-		Q_snprintf( str, sizeof( str ), "%s=", m_pVarName );

-		_putenv( str );

-#else

-		setenv( m_pVarName, "", 1 );

-#endif

-	}

-

-private:

-	bool m_bRestoreOriginalValue;

-	const char *m_pVarName;

-	bool m_bExisted;

-	CUtlVector<char> m_OriginalValue;

-};

-

-

-class CSteamEnvVars

-{

-public:

-	CSteamEnvVars() :

-		m_SteamAppId( "SteamAppId" ),

-		m_SteamUserPassphrase( "SteamUserPassphrase" ),

-		m_SteamAppUser( "SteamAppUser" ),

-		m_Path( "path" )

-	{

-	}

-	

-	void SetRestoreOriginalValue_ALL( bool bRestore )

-	{

-		m_SteamAppId.SetRestoreOriginalValue( bRestore );

-		m_SteamUserPassphrase.SetRestoreOriginalValue( bRestore );

-		m_SteamAppUser.SetRestoreOriginalValue( bRestore );

-		m_Path.SetRestoreOriginalValue( bRestore );

-	}

-

-	CTempEnvVar m_SteamAppId;

-	CTempEnvVar m_SteamUserPassphrase;

-	CTempEnvVar m_SteamAppUser;

-	CTempEnvVar m_Path;

-};

-

-// ---------------------------------------------------------------------------------------------------- //

-// Helpers.

-// ---------------------------------------------------------------------------------------------------- //

-void Q_getwd( char *out, int outSize )

-{

-#if defined( _WIN32 ) || defined( WIN32 )

-	_getcwd( out, outSize );

-	Q_strncat( out, "\\", outSize, COPY_ALL_CHARACTERS );

-#else

-	getcwd( out, outSize );

-	strcat( out, "/" );

-#endif

-	Q_FixSlashes( out );

-}

-

-// ---------------------------------------------------------------------------------------------------- //

-// Module interface.

-// ---------------------------------------------------------------------------------------------------- //

-

-CFSSearchPathsInit::CFSSearchPathsInit()

-{

-	m_pDirectoryName = NULL;

-	m_pLanguage = NULL;

-	m_ModPath[0] = 0;

-}

-

-

-CFSSteamSetupInfo::CFSSteamSetupInfo()

-{

-	m_pDirectoryName = NULL;

-	m_bOnlyUseDirectoryName = false;

-	m_bSteam = false;

-	m_bToolsMode = true;

-	m_bNoGameInfo = false;

-}

-

-

-CFSLoadModuleInfo::CFSLoadModuleInfo()

-{

-	m_pFileSystemDLLName = NULL;

-	m_pFileSystem = NULL;

-	m_pModule = NULL;

-}

-

-

-CFSMountContentInfo::CFSMountContentInfo()

-{

-	m_bToolsMode = true;

-	m_pDirectoryName = NULL;

-	m_pFileSystem = NULL;

-}

-

-

-const char *FileSystem_GetLastErrorString()

-{

-	return g_FileSystemError;

-}

-

-

-KeyValues* ReadKeyValuesFile( const char *pFilename )

-{

-	// Read in the gameinfo.txt file and null-terminate it.

-	FILE *fp = fopen( pFilename, "rb" );

-	if ( !fp )

-		return NULL;

-	CUtlVector<char> buf;

-	fseek( fp, 0, SEEK_END );

-	buf.SetSize( ftell( fp ) + 1 );

-	fseek( fp, 0, SEEK_SET );

-	fread( buf.Base(), 1, buf.Count()-1, fp );

-	fclose( fp );

-	buf[buf.Count()-1] = 0;

-

-	KeyValues *kv = new KeyValues( "" );

-	if ( !kv->LoadFromBuffer( pFilename, buf.Base() ) )

-	{

-		kv->deleteThis();

-		return NULL;

-	}

-	

-	return kv;

-}

-

-static bool Sys_GetExecutableName( char *out, int len )

-{

-#if defined( _WIN32 )

-    if ( !::GetModuleFileName( ( HINSTANCE )GetModuleHandle( NULL ), out, len ) )

-    {

-		return false;

-    }

-#else

-	if ( CommandLine()->GetParm(0) )

-	{

-		Q_MakeAbsolutePath( out, len, CommandLine()->GetParm(0) );

-	}

-	else

-	{

-		return false;

-	}

-#endif

-

-	return true;

-}

-

-bool FileSystem_GetExecutableDir( char *exedir, int exeDirLen )

-{

-	exedir[0] = 0;

-

-	if ( s_bUseVProjectBinDir )

-	{

-		const char *pProject = GetVProjectCmdLineValue();

-		if ( !pProject )

-		{

-			// Check their registry.

-			pProject = getenv( GAMEDIR_TOKEN );

-		}

-		if ( pProject )

-		{

-			Q_snprintf( exedir, exeDirLen, "%s%c..%cbin", pProject, CORRECT_PATH_SEPARATOR, CORRECT_PATH_SEPARATOR );

-			return true;

-		}

-		return false;

-	}

-

-	if ( !Sys_GetExecutableName( exedir, exeDirLen ) )

-		return false;

-	Q_StripFilename( exedir );

-

-	if ( IsX360() )

-	{

-		// The 360 can have its exe and dlls reside on different volumes

-		// use the optional basedir as the exe dir

-		if ( CommandLine()->FindParm( "-basedir" ) )

-		{

-			strcpy( exedir, CommandLine()->ParmValue( "-basedir", "" ) );

-		}

-	}

-

-	Q_FixSlashes( exedir );

-

-	// Return the bin directory as the executable dir if it's not in there

-	// because that's really where we're running from...

-	char ext[MAX_PATH];

-	Q_StrRight( exedir, 4, ext, sizeof( ext ) );

-	if ( ext[0] != CORRECT_PATH_SEPARATOR || Q_stricmp( ext+1, "bin" ) != 0 )

-	{

-		Q_strncat( exedir, CORRECT_PATH_SEPARATOR_S, exeDirLen, COPY_ALL_CHARACTERS );

-		Q_strncat( exedir, "bin", exeDirLen, COPY_ALL_CHARACTERS );

-		Q_FixSlashes( exedir );

-	}

-	

-	return true;

-}

-

-static bool FileSystem_GetBaseDir( char *baseDir, int baseDirLen )

-{

-	if ( FileSystem_GetExecutableDir( baseDir, baseDirLen ) )

-	{

-		Q_StripFilename( baseDir );

-		return true;

-	}

-	

-	return false;

-}

-

-void LaunchVConfig()

-{

-#if defined( _WIN32 ) && !defined( _X360 )

-	char vconfigExe[MAX_PATH];

-	FileSystem_GetExecutableDir( vconfigExe, sizeof( vconfigExe ) );

-	Q_AppendSlash( vconfigExe, sizeof( vconfigExe ) );

-	Q_strncat( vconfigExe, "vconfig.exe", sizeof( vconfigExe ), COPY_ALL_CHARACTERS );

-

-	char *argv[] =

-	{

-		vconfigExe,

-		"-allowdebug",

-		NULL

-	};

-

-	_spawnv( _P_NOWAIT, vconfigExe, argv );

-#elif defined( _X360 )

-	Msg( "Launching vconfig.exe not supported\n" );

-#endif

-}

-

-const char* GetVProjectCmdLineValue()

-{

-	return CommandLine()->ParmValue( "-vproject", CommandLine()->ParmValue( "-game" ) );

-}

-

-FSReturnCode_t SetupFileSystemError( bool bRunVConfig, FSReturnCode_t retVal, const char *pMsg, ... )

-{

-	va_list marker;

-	va_start( marker, pMsg );

-	Q_vsnprintf( g_FileSystemError, sizeof( g_FileSystemError ), pMsg, marker );

-	va_end( marker );

-

-	Warning( "%s\n", g_FileSystemError );

-

-	// Run vconfig?

-	// Don't do it if they specifically asked for it not to, or if they manually specified a vconfig with -game or -vproject.

-	if ( bRunVConfig && g_FileSystemErrorMode == FS_ERRORMODE_VCONFIG && !CommandLine()->FindParm( CMDLINEOPTION_NOVCONFIG ) && !GetVProjectCmdLineValue() )

-	{

-		LaunchVConfig();

-	}

-

-	if ( g_FileSystemErrorMode == FS_ERRORMODE_AUTO || g_FileSystemErrorMode == FS_ERRORMODE_VCONFIG )

-	{

-		Error( "%s\n", g_FileSystemError );

-	}

-	

-	return retVal;

-}

-

-FSReturnCode_t LoadGameInfoFile( 

-	const char *pDirectoryName, 

-	KeyValues *&pMainFile, 

-	KeyValues *&pFileSystemInfo, 

-	KeyValues *&pSearchPaths )

-{

-	// If GameInfo.txt exists under pBaseDir, then this is their game directory.

-	// All the filesystem mappings will be in this file.

-	char gameinfoFilename[MAX_PATH];

-	Q_strncpy( gameinfoFilename, pDirectoryName, sizeof( gameinfoFilename ) );

-	Q_AppendSlash( gameinfoFilename, sizeof( gameinfoFilename ) );

-	Q_strncat( gameinfoFilename, GAMEINFO_FILENAME, sizeof( gameinfoFilename ), COPY_ALL_CHARACTERS );

-	Q_FixSlashes( gameinfoFilename );

-	pMainFile = ReadKeyValuesFile( gameinfoFilename );

-	if ( IsX360() && !pMainFile )

-	{

-		// try again

-		Q_strncpy( gameinfoFilename, pDirectoryName, sizeof( gameinfoFilename ) );

-		Q_AppendSlash( gameinfoFilename, sizeof( gameinfoFilename ) );

-		Q_strncat( gameinfoFilename, GAMEINFO_FILENAME_ALTERNATE, sizeof( gameinfoFilename ), COPY_ALL_CHARACTERS );

-		Q_FixSlashes( gameinfoFilename );

-		pMainFile = ReadKeyValuesFile( gameinfoFilename );

-	}

-	if ( !pMainFile )

-	{

-		return SetupFileSystemError( true, FS_MISSING_GAMEINFO_FILE, "%s is missing.", gameinfoFilename );

-	}

-

-	pFileSystemInfo = pMainFile->FindKey( "FileSystem" );

-	if ( !pFileSystemInfo )

-	{

-		pMainFile->deleteThis();

-		return SetupFileSystemError( true, FS_INVALID_GAMEINFO_FILE, "%s is not a valid format.", gameinfoFilename );

-	}

-

-	// Now read in all the search paths.

-	pSearchPaths = pFileSystemInfo->FindKey( "SearchPaths" );

-	if ( !pSearchPaths )

-	{

-		pMainFile->deleteThis();

-		return SetupFileSystemError( true, FS_INVALID_GAMEINFO_FILE, "%s is not a valid format.", gameinfoFilename );

-	}

-	return FS_OK;

-}

-

-// checks the registry for the low violence setting

-// Check "HKEY_CURRENT_USER\Software\Valve\Source\Settings" and "User Token 2" or "User Token 3"

-bool IsLowViolenceBuild( void )

-{

-#if defined(_WIN32)

-	HKEY hKey;

-	char szValue[64];

-	unsigned long len = sizeof(szValue) - 1;

-	bool retVal = false;

-	

-	if ( IsPC() && RegOpenKeyEx( HKEY_CURRENT_USER, "Software\\Valve\\Source\\Settings", NULL, KEY_READ, &hKey) == ERROR_SUCCESS )

-	{

-		// User Token 2

-		if ( RegQueryValueEx( hKey, "User Token 2", NULL, NULL, (unsigned char*)szValue, &len ) == ERROR_SUCCESS )

-		{

-			if ( Q_strlen( szValue ) > 0 )

-			{

-				retVal = true;

-			}

-		}

-

-		if ( !retVal )

-		{

-			// reset "len" for the next check

-			len = sizeof(szValue) - 1;

-

-			// User Token 3

-			if ( RegQueryValueEx( hKey, "User Token 3", NULL, NULL, (unsigned char*)szValue, &len ) == ERROR_SUCCESS )

-			{

-				if ( Q_strlen( szValue ) > 0 )

-				{

-					retVal = true;

-				}

-			}

-		}

-

-		RegCloseKey(hKey);

-	}

-

-	return retVal;

-#elif POSIX

-	return false;

-#else

-	#error "Fix me"

-#endif

-}

-

-static void FileSystem_AddLoadedSearchPath( 

-	CFSSearchPathsInit &initInfo, 

-	const char *pPathID, 

-	const char *fullLocationPath, 

-	bool bLowViolence )

-{

-

-	// Check for mounting LV game content in LV builds only

-	if ( V_stricmp( pPathID, "game_lv" ) == 0 )

-	{

-

-		// Not in LV build, don't mount

-		if ( !bLowViolence )

-			return;

-

-		// Mount, as a game path

-		pPathID = "game";

-	}

-

-	// Special processing for ordinary game folders

-	if ( V_stristr( fullLocationPath, ".vpk" ) == NULL && Q_stricmp( pPathID, "game" ) == 0 )

-	{

-		if ( CommandLine()->FindParm( "-tempcontent" ) != 0 )

-		{

-			char szPath[MAX_PATH];

-			Q_snprintf( szPath, sizeof(szPath), "%s_tempcontent", fullLocationPath );

-			initInfo.m_pFileSystem->AddSearchPath( szPath, pPathID, PATH_ADD_TO_TAIL );

-		}

-	}

-

-	

-	if ( initInfo.m_pLanguage &&

-	     Q_stricmp( initInfo.m_pLanguage, "english" ) &&

-	     V_strstr( fullLocationPath, "_english" ) != NULL )

-	{

-		char szPath[MAX_PATH];

-		char szLangString[MAX_PATH];		

-		

-		// Need to add a language version of this path first

-

-		Q_snprintf( szLangString, sizeof(szLangString), "_%s", initInfo.m_pLanguage);

-		V_StrSubst( fullLocationPath, "_english", szLangString, szPath, sizeof( szPath ), true );

-		initInfo.m_pFileSystem->AddSearchPath( szPath, pPathID, PATH_ADD_TO_TAIL );		

-	}

-

-	initInfo.m_pFileSystem->AddSearchPath( fullLocationPath, pPathID, PATH_ADD_TO_TAIL );

-}

-

-static int SortStricmp( char * const * sz1, char * const * sz2 )

-{

-	return V_stricmp( *sz1, *sz2 );

-}

-

-FSReturnCode_t FileSystem_LoadSearchPaths( CFSSearchPathsInit &initInfo )

-{

-	if ( !initInfo.m_pFileSystem || !initInfo.m_pDirectoryName )

-		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_LoadSearchPaths: Invalid parameters specified." );

-

-	KeyValues *pMainFile, *pFileSystemInfo, *pSearchPaths;

-	FSReturnCode_t retVal = LoadGameInfoFile( initInfo.m_pDirectoryName, pMainFile, pFileSystemInfo, pSearchPaths );

-	if ( retVal != FS_OK )

-		return retVal;

-	

-	// All paths except those marked with |gameinfo_path| are relative to the base dir.

-	char baseDir[MAX_PATH];

-	if ( !FileSystem_GetBaseDir( baseDir, sizeof( baseDir ) ) )

-		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetBaseDir failed." );

-

-	// The MOD directory is always the one that contains gameinfo.txt

-	Q_strncpy( initInfo.m_ModPath, initInfo.m_pDirectoryName, sizeof( initInfo.m_ModPath ) );

-

-	#define GAMEINFOPATH_TOKEN		"|gameinfo_path|"

-	#define BASESOURCEPATHS_TOKEN	"|all_source_engine_paths|"

-

-	const char *pszExtraSearchPath = CommandLine()->ParmValue( "-insert_search_path" );

-	if ( pszExtraSearchPath )

-	{

-		CUtlStringList vecPaths;

-		V_SplitString( pszExtraSearchPath, ",", vecPaths );

-		FOR_EACH_VEC( vecPaths, idxExtraPath )

-		{

-			char szAbsSearchPath[MAX_PATH];

-			Q_StripPrecedingAndTrailingWhitespace( vecPaths[ idxExtraPath ] );

-			V_MakeAbsolutePath( szAbsSearchPath, sizeof( szAbsSearchPath ), vecPaths[ idxExtraPath ], baseDir );

-			V_FixSlashes( szAbsSearchPath );

-			if ( !V_RemoveDotSlashes( szAbsSearchPath ) )

-				Error( "Bad -insert_search_path - Can't resolve pathname for '%s'", szAbsSearchPath );

-			V_StripTrailingSlash( szAbsSearchPath );

-			FileSystem_AddLoadedSearchPath( initInfo, "GAME", szAbsSearchPath, false );

-			FileSystem_AddLoadedSearchPath( initInfo, "MOD", szAbsSearchPath, false );

-		}

-	}

-

-	bool bLowViolence = IsLowViolenceBuild();

-	for ( KeyValues *pCur=pSearchPaths->GetFirstValue(); pCur; pCur=pCur->GetNextValue() )

-	{

-		const char *pLocation = pCur->GetString();

-		const char *pszBaseDir = baseDir;

-

-		if ( Q_stristr( pLocation, GAMEINFOPATH_TOKEN ) == pLocation )

-		{

-			pLocation += strlen( GAMEINFOPATH_TOKEN );

-			pszBaseDir = initInfo.m_pDirectoryName;

-		}

-		else if ( Q_stristr( pLocation, BASESOURCEPATHS_TOKEN ) == pLocation )

-		{

-			// This is a special identifier that tells it to add the specified path for all source engine versions equal to or prior to this version.

-			// So in Orange Box, if they specified:

-			//		|all_source_engine_paths|hl2

-			// it would add the ep2\hl2 folder and the base (ep1-era) hl2 folder.

-			//

-			// We need a special identifier in the gameinfo.txt here because the base hl2 folder exists in different places.

-			// In the case of a game or a Steam-launched dedicated server, all the necessary prior engine content is mapped in with the Steam depots,

-			// so we can just use the path as-is.

-			pLocation += strlen( BASESOURCEPATHS_TOKEN );

-		}

-

-		CUtlStringList vecFullLocationPaths;

-		char szAbsSearchPath[MAX_PATH];

-		V_MakeAbsolutePath( szAbsSearchPath, sizeof( szAbsSearchPath ), pLocation, pszBaseDir );

-

-		// Now resolve any ./'s.

-		V_FixSlashes( szAbsSearchPath );

-		if ( !V_RemoveDotSlashes( szAbsSearchPath ) )

-			Error( "FileSystem_AddLoadedSearchPath - Can't resolve pathname for '%s'", szAbsSearchPath );

-		V_StripTrailingSlash( szAbsSearchPath );

-

-		// Don't bother doing any wildcard expansion unless it has wildcards.  This avoids the weird

-		// thing with xxx_dir.vpk files being referred to simply as xxx.vpk.

-		if ( V_stristr( pLocation, "?") == NULL && V_stristr( pLocation, "*") == NULL )

-		{

-			vecFullLocationPaths.CopyAndAddToTail( szAbsSearchPath );

-		}

-		else

-		{

-			FileFindHandle_t findHandle = NULL;

-			const char *pszFoundShortName = initInfo.m_pFileSystem->FindFirst( szAbsSearchPath, &findHandle );

-			if ( pszFoundShortName )

-			{

-				do 

-				{

-

-					// We only know how to mount VPK's and directories

-					if ( pszFoundShortName[0] != '.' && ( initInfo.m_pFileSystem->FindIsDirectory( findHandle ) || V_stristr( pszFoundShortName, ".vpk" ) ) )

-					{

-						char szAbsName[MAX_PATH];

-						V_ExtractFilePath( szAbsSearchPath, szAbsName, sizeof( szAbsName ) );

-						V_AppendSlash( szAbsName, sizeof(szAbsName) );

-						V_strcat_safe( szAbsName, pszFoundShortName );

-

-						vecFullLocationPaths.CopyAndAddToTail( szAbsName );

-

-						// Check for a common mistake

-						if (

-							!V_stricmp( pszFoundShortName, "materials" )

-							|| !V_stricmp( pszFoundShortName, "maps" )

-							|| !V_stricmp( pszFoundShortName, "resource" )

-							|| !V_stricmp( pszFoundShortName, "scripts" )

-							|| !V_stricmp( pszFoundShortName, "sound" )

-							|| !V_stricmp( pszFoundShortName, "models" ) )

-						{

-

-							char szReadme[MAX_PATH];

-							V_ExtractFilePath( szAbsSearchPath, szReadme, sizeof( szReadme ) );

-							V_AppendSlash( szReadme, sizeof(szReadme) );

-							V_strcat_safe( szReadme, "readme.txt" );

-

-							Error(

-								"Tried to add %s as a search path.\n"

-								"\nThis is probably not what you intended.\n"

-								"\nCheck %s for more info\n",

-								szAbsName, szReadme );

-						}

-

-					}

-					pszFoundShortName = initInfo.m_pFileSystem->FindNext( findHandle );

-				} while ( pszFoundShortName );

-				initInfo.m_pFileSystem->FindClose( findHandle );

-			}

-

-			// Sort alphabetically.  Also note that this will put

-			// all the xxx_000.vpk packs just before the corresponding

-			// xxx_dir.vpk

-			vecFullLocationPaths.Sort( SortStricmp );

-

-			// Now for any _dir.vpk files, remove the _nnn.vpk ones.

-			int idx = vecFullLocationPaths.Count()-1;

-			while ( idx > 0 )

-			{

-				char szTemp[ MAX_PATH ];

-				V_strcpy_safe( szTemp, vecFullLocationPaths[ idx ] );

-				--idx;

-

-				char *szDirVpk = V_stristr( szTemp, "_dir.vpk" );

-				if ( szDirVpk != NULL )

-				{

-					*szDirVpk = '\0';

-					while ( idx >= 0 )

-					{

-						char *pszPath = vecFullLocationPaths[ idx ];

-						if ( V_stristr( pszPath, szTemp ) != pszPath )

-							break;

-						delete pszPath;

-						vecFullLocationPaths.Remove( idx );

-						--idx;

-					}

-				}

-			}

-		}

-

-		// Parse Path ID list

-		CUtlStringList vecPathIDs;

-		V_SplitString( pCur->GetName(), "+", vecPathIDs );

-		FOR_EACH_VEC( vecPathIDs, idxPathID )

-		{

-			Q_StripPrecedingAndTrailingWhitespace( vecPathIDs[ idxPathID ] );

-		}

-

-		// Mount them.

-		FOR_EACH_VEC( vecFullLocationPaths, idxLocation )

-		{

-			FOR_EACH_VEC( vecPathIDs, idxPathID )

-			{

-				FileSystem_AddLoadedSearchPath( initInfo, vecPathIDs[ idxPathID ], vecFullLocationPaths[ idxLocation ], bLowViolence );

-			}

-		}

-	}

-

-	pMainFile->deleteThis();

-

-	// Also, mark specific path IDs as "by request only". That way, we won't waste time searching in them

-	// when people forget to specify a search path.

-	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "executable_path", true );

-	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "gamebin", true );

-	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "download", true );

-	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "mod", true );

-	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "game_write", true );

-	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "mod_write", true );

-

-#ifdef _DEBUG	

-	// initInfo.m_pFileSystem->PrintSearchPaths();

-#endif

-

-	return FS_OK;

-}

-

-bool DoesFileExistIn( const char *pDirectoryName, const char *pFilename )

-{

-	char filename[MAX_PATH];

-

-	Q_strncpy( filename, pDirectoryName, sizeof( filename ) );

-	Q_AppendSlash( filename, sizeof( filename ) );

-	Q_strncat( filename, pFilename, sizeof( filename ), COPY_ALL_CHARACTERS );

-	Q_FixSlashes( filename );

-	bool bExist = ( _access( filename, 0 ) == 0 );

-

-	return ( bExist );

-}

-

-namespace

-{

-	SuggestGameInfoDirFn_t & GetSuggestGameInfoDirFn( void )

-	{

-		static SuggestGameInfoDirFn_t s_pfnSuggestGameInfoDir = NULL;

-		return s_pfnSuggestGameInfoDir;

-	}

-}; // `anonymous` namespace

-

-SuggestGameInfoDirFn_t SetSuggestGameInfoDirFn( SuggestGameInfoDirFn_t pfnNewFn )

-{

-	SuggestGameInfoDirFn_t &rfn = GetSuggestGameInfoDirFn();

-	SuggestGameInfoDirFn_t pfnOldFn = rfn;

-	rfn = pfnNewFn;

-	return pfnOldFn;

-}

-

-static FSReturnCode_t TryLocateGameInfoFile( char *pOutDir, int outDirLen, bool bBubbleDir )

-{

-	// Retain a copy of suggested path for further attempts

-	CArrayAutoPtr < char > spchCopyNameBuffer( new char [ outDirLen ] );

-	Q_strncpy( spchCopyNameBuffer.Get(), pOutDir, outDirLen );

-	spchCopyNameBuffer[ outDirLen - 1 ] = 0;

-

-	// Make appropriate slashes ('/' - Linux style)

-	for ( char *pchFix = spchCopyNameBuffer.Get(),

-		*pchEnd = pchFix + outDirLen;

-		pchFix < pchEnd; ++ pchFix )

-	{

-		if ( '\\' == *pchFix )

-		{

-			*pchFix = '/';

-		}

-	}

-

-	// Have a look in supplied path

-	do

-	{

-		if ( DoesFileExistIn( pOutDir, GAMEINFO_FILENAME ) )

-		{

-			return FS_OK;

-		}

-		if ( IsX360() && DoesFileExistIn( pOutDir, GAMEINFO_FILENAME_ALTERNATE ) ) 

-		{

-			return FS_OK;

-		}

-	} 

-	while ( bBubbleDir && Q_StripLastDir( pOutDir, outDirLen ) );

-

-	// Make an attempt to resolve from "content -> game" directory

-	Q_strncpy( pOutDir, spchCopyNameBuffer.Get(), outDirLen );

-	pOutDir[ outDirLen - 1 ] = 0;

-	if ( char *pchContentFix = Q_stristr( pOutDir, "/content/" ) )

-	{

-		sprintf( pchContentFix, "/game/" );

-		memmove( pchContentFix + 6, pchContentFix + 9, pOutDir + outDirLen - (pchContentFix + 9) );

-

-		// Try in the mapped "game" directory

-		do

-		{

-			if ( DoesFileExistIn( pOutDir, GAMEINFO_FILENAME ) )

-			{

-				return FS_OK;

-			}

-			if ( IsX360() && DoesFileExistIn( pOutDir, GAMEINFO_FILENAME_ALTERNATE ) )

-			{

-				return FS_OK;

-			}

-		} 

-		while ( bBubbleDir && Q_StripLastDir( pOutDir, outDirLen ) );

-	}

-

-	// Could not find it here

-	return FS_MISSING_GAMEINFO_FILE;

-}

-

-FSReturnCode_t LocateGameInfoFile( const CFSSteamSetupInfo &fsInfo, char *pOutDir, int outDirLen )

-{

-	// Engine and Hammer don't want to search around for it.

-	if ( fsInfo.m_bOnlyUseDirectoryName )

-	{

-		if ( !fsInfo.m_pDirectoryName )

-			return SetupFileSystemError( false, FS_MISSING_GAMEINFO_FILE, "bOnlyUseDirectoryName=1 and pDirectoryName=NULL." );

-

-		bool bExists = DoesFileExistIn( fsInfo.m_pDirectoryName, GAMEINFO_FILENAME );

-		if ( IsX360() && !bExists )

-		{

-			bExists = DoesFileExistIn( fsInfo.m_pDirectoryName, GAMEINFO_FILENAME_ALTERNATE );

-		}

-		if ( !bExists )

-		{

-			if ( IsX360() && CommandLine()->FindParm( "-basedir" ) )

-			{

-				char basePath[MAX_PATH];

-				strcpy( basePath, CommandLine()->ParmValue( "-basedir", "" ) );

-				Q_AppendSlash( basePath, sizeof( basePath ) );

-				Q_strncat( basePath, fsInfo.m_pDirectoryName, sizeof( basePath ), COPY_ALL_CHARACTERS );

-				if ( DoesFileExistIn( basePath, GAMEINFO_FILENAME ) )

-				{

-					Q_strncpy( pOutDir, basePath, outDirLen );

-					return FS_OK;

-				}

-				if ( IsX360() && DoesFileExistIn( basePath, GAMEINFO_FILENAME_ALTERNATE ) )

-				{

-					Q_strncpy( pOutDir, basePath, outDirLen );

-					return FS_OK;

-				}

-			}

-

-			return SetupFileSystemError( true, FS_MISSING_GAMEINFO_FILE, "Setup file '%s' doesn't exist in subdirectory '%s'.\nCheck your -game parameter or VCONFIG setting.", GAMEINFO_FILENAME, fsInfo.m_pDirectoryName );

-		}

-

-		Q_strncpy( pOutDir, fsInfo.m_pDirectoryName, outDirLen );

-		return FS_OK;

-	}

-

-	// First, check for overrides on the command line or environment variables.

-	const char *pProject = GetVProjectCmdLineValue();

-

-	if ( pProject )

-	{

-		if ( DoesFileExistIn( pProject, GAMEINFO_FILENAME ) )

-		{

-			Q_MakeAbsolutePath( pOutDir, outDirLen, pProject );

-			return FS_OK;

-		}

-		if ( IsX360() && DoesFileExistIn( pProject, GAMEINFO_FILENAME_ALTERNATE ) )	

-		{

-			Q_MakeAbsolutePath( pOutDir, outDirLen, pProject );

-			return FS_OK;

-		}

-

-		if ( IsX360() && CommandLine()->FindParm( "-basedir" ) )

-		{

-			char basePath[MAX_PATH];

-			strcpy( basePath, CommandLine()->ParmValue( "-basedir", "" ) );

-			Q_AppendSlash( basePath, sizeof( basePath ) );

-			Q_strncat( basePath, pProject, sizeof( basePath ), COPY_ALL_CHARACTERS );

-			if ( DoesFileExistIn( basePath, GAMEINFO_FILENAME ) )

-			{

-				Q_strncpy( pOutDir, basePath, outDirLen );

-				return FS_OK;

-			}

-			if ( DoesFileExistIn( basePath, GAMEINFO_FILENAME_ALTERNATE ) )

-			{

-				Q_strncpy( pOutDir, basePath, outDirLen );

-				return FS_OK;

-			}

-		}

-		

-		if ( fsInfo.m_bNoGameInfo )

-		{

-			// fsInfo.m_bNoGameInfo is set by the Steam dedicated server, before it knows which mod to use.

-			// Steam dedicated server doesn't need a gameinfo.txt, because we'll ask which mod to use, even if

-			// -game is supplied on the command line.

-			Q_strncpy( pOutDir, "", outDirLen );

-			return FS_OK;

-		}

-		else

-		{

-			// They either specified vproject on the command line or it's in their registry. Either way,

-			// we don't want to continue if they've specified it but it's not valid.

-			goto ShowError;

-		}

-	}

-

-	if ( fsInfo.m_bNoGameInfo )

-	{

-		Q_strncpy( pOutDir, "", outDirLen );

-		return FS_OK;

-	}

-

-	// Ask the application if it can provide us with a game info directory

-	{

-		bool bBubbleDir = true;

-		SuggestGameInfoDirFn_t pfnSuggestGameInfoDirFn = GetSuggestGameInfoDirFn();

-		if ( pfnSuggestGameInfoDirFn &&

-			( * pfnSuggestGameInfoDirFn )( &fsInfo, pOutDir, outDirLen, &bBubbleDir ) &&

-			FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, bBubbleDir ) )

-			return FS_OK;

-	}

-

-	// Try to use the environment variable / registry

-	if ( ( pProject = getenv( GAMEDIR_TOKEN ) ) != NULL &&

-		 ( Q_MakeAbsolutePath( pOutDir, outDirLen, pProject ), 1 ) &&

-		 FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, false ) )

-		return FS_OK;

-

-	if ( IsPC() )

-	{

-		Warning( "Warning: falling back to auto detection of vproject directory.\n" );

-		

-		// Now look for it in the directory they passed in.

-		if ( fsInfo.m_pDirectoryName )

-			Q_MakeAbsolutePath( pOutDir, outDirLen, fsInfo.m_pDirectoryName );

-		else

-			Q_MakeAbsolutePath( pOutDir, outDirLen, "." );

-

-		if ( FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, true ) )

-			return FS_OK;

-

-		// Use the CWD

-		Q_getwd( pOutDir, outDirLen );

-		if ( FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, true ) )

-			return FS_OK;

-	}

-

-ShowError:

-	return SetupFileSystemError( true, FS_MISSING_GAMEINFO_FILE, 

-		"Unable to find %s. Solutions:\n\n"

-		"1. Read http://www.valve-erc.com/srcsdk/faq.html#NoGameDir\n"

-		"2. Run vconfig to specify which game you're working on.\n"

-		"3. Add -game <path> on the command line where <path> is the directory that %s is in.\n",

-		GAMEINFO_FILENAME, GAMEINFO_FILENAME );

-}

-

-bool DoesPathExistAlready( const char *pPathEnvVar, const char *pTestPath )

-{

-	// Fix the slashes in the input arguments.

-	char correctedPathEnvVar[8192], correctedTestPath[MAX_PATH];

-	Q_strncpy( correctedPathEnvVar, pPathEnvVar, sizeof( correctedPathEnvVar ) );

-	Q_FixSlashes( correctedPathEnvVar );

-	pPathEnvVar = correctedPathEnvVar;

-

-	Q_strncpy( correctedTestPath, pTestPath, sizeof( correctedTestPath ) );

-	Q_FixSlashes( correctedTestPath );

-	if ( strlen( correctedTestPath ) > 0 && PATHSEPARATOR( correctedTestPath[strlen(correctedTestPath)-1] ) )

-		correctedTestPath[ strlen(correctedTestPath) - 1 ] = 0;

-

-	pTestPath = correctedTestPath;

-

-	const char *pCurPos = pPathEnvVar;

-	while ( 1 )

-	{

-		const char *pTestPos = Q_stristr( pCurPos, pTestPath );

-		if ( !pTestPos )

-			return false;

-

-		// Ok, we found pTestPath in the path, but it's only valid if it's followed by an optional slash and a semicolon.

-		pTestPos += strlen( pTestPath );

-		if ( pTestPos[0] == 0 || pTestPos[0] == ';' || (PATHSEPARATOR( pTestPos[0] ) && pTestPos[1] == ';') )

-			return true;

-	

-		// Advance our marker..

-		pCurPos = pTestPos;

-	}

-}

-

-FSReturnCode_t SetSteamInstallPath( char *steamInstallPath, int steamInstallPathLen, CSteamEnvVars &steamEnvVars, bool bErrorsAsWarnings )

-{

-	if ( IsConsole() )

-	{

-		// consoles don't use steam

-		return FS_MISSING_STEAM_DLL;

-	}

-

-	if ( IsPosix() )

-		return FS_OK; // under posix the content does not live with steam.dll up the path, rely on the environment already being set by steam

-	

-	// Start at our bin directory and move up until we find a directory with steam.dll in it.

-	char executablePath[MAX_PATH];

-	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) )	)

-	{

-		if ( bErrorsAsWarnings )

-		{

-			Warning( "SetSteamInstallPath: FileSystem_GetExecutableDir failed.\n" );

-			return FS_INVALID_PARAMETERS;

-		}

-		else

-		{

-			return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );

-		}

-	}

-

-	Q_strncpy( steamInstallPath, executablePath, steamInstallPathLen );

-#ifdef WIN32

-	const char *pchSteamDLL = "steam" DLL_EXT_STRING;

-#elif defined(POSIX)

-	// under osx the bin lives in the bin/ folder, so step back one

-	Q_StripLastDir( steamInstallPath, steamInstallPathLen );

-	const char *pchSteamDLL = "libsteam" DLL_EXT_STRING;	

-#else

-	#error

-#endif

-	while ( 1 )

-	{

-		// Ignore steamapp.cfg here in case they're debugging. We still need to know the real steam path so we can find their username.

-		// find 

-		if ( DoesFileExistIn( steamInstallPath, pchSteamDLL ) && !DoesFileExistIn( steamInstallPath, "steamapp.cfg" ) )

-			break;

-	

-		if ( !Q_StripLastDir( steamInstallPath, steamInstallPathLen ) )

-		{

-			if ( bErrorsAsWarnings )

-			{

-				Warning( "Can't find %s relative to executable path: %s.\n", pchSteamDLL, executablePath );

-				return FS_MISSING_STEAM_DLL;

-			}

-			else

-			{

-				return SetupFileSystemError( false, FS_MISSING_STEAM_DLL, "Can't find %s relative to executable path: %s.", pchSteamDLL, executablePath );

-			}

-		}			

-	}

-

-	// Also, add the install path to their PATH environment variable, so filesystem_steam.dll can get to steam.dll.

-	char szPath[ 8192 ];

-	steamEnvVars.m_Path.GetValue( szPath, sizeof( szPath ) );

-	if ( !DoesPathExistAlready( szPath, steamInstallPath ) )

-	{

-#ifdef WIN32

-#define PATH_SEP ";"

-#else

-#define PATH_SEP ":"

-#endif	

-		steamEnvVars.m_Path.SetValue( "%s%s%s", szPath, PATH_SEP, steamInstallPath );

-	}

-	return FS_OK;

-}

-

-FSReturnCode_t GetSteamCfgPath( char *steamCfgPath, int steamCfgPathLen )

-{

-	steamCfgPath[0] = 0;

-	char executablePath[MAX_PATH];

-	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) ) )

-	{

-		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );

-	}

-	Q_strncpy( steamCfgPath, executablePath, steamCfgPathLen );

-	while ( 1 )

-	{

-		if ( DoesFileExistIn( steamCfgPath, "steam.cfg" ) )

-			break;

-	

-		if ( !Q_StripLastDir( steamCfgPath, steamCfgPathLen) )

-		{

-			// the file isnt found, thats ok, its not mandatory

-			return FS_OK;

-		}			

-	}

-	Q_AppendSlash( steamCfgPath, steamCfgPathLen );

-	Q_strncat( steamCfgPath, "steam.cfg", steamCfgPathLen, COPY_ALL_CHARACTERS );

-

-	return FS_OK;

-}

-

-void SetSteamAppUser( KeyValues *pSteamInfo, const char *steamInstallPath, CSteamEnvVars &steamEnvVars )

-{

-	// Always inherit the Steam user if it's already set, since it probably means we (or the

-	// the app that launched us) were launched from Steam.

-	char appUser[MAX_PATH];

-	if ( steamEnvVars.m_SteamAppUser.GetValue( appUser, sizeof( appUser ) ) )

-		return;

-

-	const char *pTempAppUser = NULL;

-	if ( pSteamInfo && (pTempAppUser = pSteamInfo->GetString( "SteamAppUser", NULL )) != NULL )

-	{

-		Q_strncpy( appUser, pTempAppUser, sizeof( appUser ) );

-	}

-	else

-	{

-		// They don't have SteamInfo.txt, or it's missing SteamAppUser. Try to figure out the user

-		// by looking in <steam install path>\config\SteamAppData.vdf.

-		char fullFilename[MAX_PATH];

-		Q_strncpy( fullFilename, steamInstallPath, sizeof( fullFilename ) );

-		Q_AppendSlash( fullFilename, sizeof( fullFilename ) );

-		Q_strncat( fullFilename, "config\\SteamAppData.vdf", sizeof( fullFilename ), COPY_ALL_CHARACTERS );

-

-		KeyValues *pSteamAppData = ReadKeyValuesFile( fullFilename );

-		if ( !pSteamAppData || (pTempAppUser = pSteamAppData->GetString( "AutoLoginUser", NULL )) == NULL )

-		{

-			Error( "Can't find steam app user info." );

-		}

-		Q_strncpy( appUser, pTempAppUser, sizeof( appUser ) ); 

-		

-		pSteamAppData->deleteThis();

-	}

-

-	Q_strlower( appUser );

-	steamEnvVars.m_SteamAppUser.SetValue( "%s", appUser );

-}

-

-void SetSteamUserPassphrase( KeyValues *pSteamInfo, CSteamEnvVars &steamEnvVars )

-{

-	// Always inherit the passphrase if it's already set, since it probably means we (or the

-	// the app that launched us) were launched from Steam.

-	char szPassPhrase[ MAX_PATH ];

-	if ( steamEnvVars.m_SteamUserPassphrase.GetValue( szPassPhrase, sizeof( szPassPhrase ) ) )

-		return;

-

-	// SteamUserPassphrase.

-	const char *pStr;

-	if ( pSteamInfo && (pStr = pSteamInfo->GetString( "SteamUserPassphrase", NULL )) != NULL )

-	{

-		steamEnvVars.m_SteamUserPassphrase.SetValue( "%s", pStr );

-	}

-}

-

-FSReturnCode_t SetupSteamStartupEnvironment( KeyValues *pFileSystemInfo, const char *pGameInfoDirectory, CSteamEnvVars &steamEnvVars )

-{

-	// Ok, we're going to run Steam. See if they have SteamInfo.txt. If not, we'll try to deduce what we can.

-	char steamInfoFile[MAX_PATH];

-	Q_strncpy( steamInfoFile, pGameInfoDirectory, sizeof( steamInfoFile ) );

-	Q_AppendSlash( steamInfoFile, sizeof( steamInfoFile ) );

-	Q_strncat( steamInfoFile, "steaminfo.txt", sizeof( steamInfoFile ), COPY_ALL_CHARACTERS );

-	KeyValues *pSteamInfo = ReadKeyValuesFile( steamInfoFile );

-

-	char steamInstallPath[MAX_PATH];

-	FSReturnCode_t ret = SetSteamInstallPath( steamInstallPath, sizeof( steamInstallPath ), steamEnvVars, false );

-	if ( ret != FS_OK )

-		return ret;

-

-	SetSteamAppUser( pSteamInfo, steamInstallPath, steamEnvVars );

-	SetSteamUserPassphrase( pSteamInfo, steamEnvVars );

-

-	if ( pSteamInfo )

-		pSteamInfo->deleteThis();

-

-	return FS_OK;

-}

-

-FSReturnCode_t FileSystem_SetBasePaths( IFileSystem *pFileSystem )

-{

-	pFileSystem->RemoveSearchPaths( "EXECUTABLE_PATH" );

-

-	char executablePath[MAX_PATH];

-	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) )	)

-		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );

-

-	pFileSystem->AddSearchPath( executablePath, "EXECUTABLE_PATH" );

-

-	if ( !FileSystem_GetBaseDir( executablePath, sizeof( executablePath ) )  )

-		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetBaseDir failed." );

-

-	pFileSystem->AddSearchPath( executablePath, "BASE_PATH" );

-

-	return FS_OK;

-}

-

-//-----------------------------------------------------------------------------

-// Returns the name of the file system DLL to use

-//-----------------------------------------------------------------------------

-FSReturnCode_t FileSystem_GetFileSystemDLLName( char *pFileSystemDLL, int nMaxLen, bool &bSteam )

-{

-	bSteam = false;

-

-	// Inside of here, we don't have a filesystem yet, so we have to assume that the filesystem_stdio or filesystem_steam

-	// is in this same directory with us.

-	char executablePath[MAX_PATH];

-	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) )	)

-		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );

-

-	// Assume we'll use local files

-	Q_snprintf( pFileSystemDLL, nMaxLen, "%s%cfilesystem_stdio" DLL_EXT_STRING, executablePath, CORRECT_PATH_SEPARATOR );

-

-	#if !defined( _X360 )

-

-		// Use filsystem_steam if it exists?

-		#if defined( OSX ) || defined( LINUX )

-			struct stat statBuf;

-		#endif

-		if (

-			#if defined( OSX ) || defined( LINUX )

-				stat( pFileSystemDLL, &statBuf ) != 0

-			#else

-				_access( pFileSystemDLL, 0 ) != 0

-			#endif

-		) {

-			Q_snprintf( pFileSystemDLL, nMaxLen, "%s%cfilesystem_steam" DLL_EXT_STRING, executablePath, CORRECT_PATH_SEPARATOR );

-			bSteam = true;

-		}

-	#endif

-

-	return FS_OK;

-}

-

-//-----------------------------------------------------------------------------

-// Sets up the steam.dll install path in our PATH env var (so you can then just 

-// LoadLibrary() on filesystem_steam.dll without having to copy steam.dll anywhere special )

-//-----------------------------------------------------------------------------

-FSReturnCode_t FileSystem_SetupSteamInstallPath()

-{

-	CSteamEnvVars steamEnvVars;

-	char steamInstallPath[MAX_PATH];

-	FSReturnCode_t ret = SetSteamInstallPath( steamInstallPath, sizeof( steamInstallPath ), steamEnvVars, true );

-	steamEnvVars.m_Path.SetRestoreOriginalValue( false ); // We want to keep the change to the path going forward.

-	return ret;

-}

-

-//-----------------------------------------------------------------------------

-// Sets up the steam environment + gets back the gameinfo.txt path

-//-----------------------------------------------------------------------------

-FSReturnCode_t FileSystem_SetupSteamEnvironment( CFSSteamSetupInfo &fsInfo )

-{

-	// First, locate the directory with gameinfo.txt.

-	FSReturnCode_t ret = LocateGameInfoFile( fsInfo, fsInfo.m_GameInfoPath, sizeof( fsInfo.m_GameInfoPath ) );

-	if ( ret != FS_OK )

-		return ret;

-

-	// This is so that processes spawned by this application will have the same VPROJECT

-#ifdef WIN32

-	char pEnvBuf[MAX_PATH+32];

-	Q_snprintf( pEnvBuf, sizeof(pEnvBuf), "%s=%s", GAMEDIR_TOKEN, fsInfo.m_GameInfoPath );

-	_putenv( pEnvBuf );

-#else

-	setenv( GAMEDIR_TOKEN, fsInfo.m_GameInfoPath, 1 );

-#endif

-	

-	CSteamEnvVars steamEnvVars;

-	if ( fsInfo.m_bSteam )

-	{

-		if ( fsInfo.m_bToolsMode )

-		{

-			// Now, load gameinfo.txt (to make sure it's there)

-			KeyValues *pMainFile, *pFileSystemInfo, *pSearchPaths;

-			ret = LoadGameInfoFile( fsInfo.m_GameInfoPath, pMainFile, pFileSystemInfo, pSearchPaths );

-			if ( ret != FS_OK )

-				return ret;

-

-			// If filesystem_stdio.dll is missing or -steam is specified, then load filesystem_steam.dll.

-			// There are two command line parameters for Steam:

-			//		1) -steam (runs Steam in remote filesystem mode; requires Steam backend)

-			//		2) -steamlocal (runs Steam in local filesystem mode (all content off HDD)

-

-			// Setup all the environment variables related to Steam so filesystem_steam.dll knows how to initialize Steam.

-			ret = SetupSteamStartupEnvironment( pFileSystemInfo, fsInfo.m_GameInfoPath, steamEnvVars );

-			if ( ret != FS_OK )

-				return ret;

-

-			steamEnvVars.m_SteamAppId.SetRestoreOriginalValue( false ); // We want to keep the change to the path going forward.

-

-			// We're done with main file

-			pMainFile->deleteThis();

-		}

-		else if ( fsInfo.m_bSetSteamDLLPath )

-		{

-			// This is used by the engine to automatically set the path to their steam.dll when running the engine,

-			// so they can debug it without having to copy steam.dll up into their hl2.exe folder.

-			char steamInstallPath[MAX_PATH];

-			ret = SetSteamInstallPath( steamInstallPath, sizeof( steamInstallPath ), steamEnvVars, true );

-			steamEnvVars.m_Path.SetRestoreOriginalValue( false ); // We want to keep the change to the path going forward.

-		}

-	}

-

-	return FS_OK;

-}

-

-

-//-----------------------------------------------------------------------------

-// Loads the file system module

-//-----------------------------------------------------------------------------

-FSReturnCode_t FileSystem_LoadFileSystemModule( CFSLoadModuleInfo &fsInfo )

-{

-	// First, locate the directory with gameinfo.txt.

-	FSReturnCode_t ret = FileSystem_SetupSteamEnvironment( fsInfo );

-	if ( ret != FS_OK )

-		return ret;

-

-	// Now that the environment is setup, load the filesystem module.

-	if ( !Sys_LoadInterface(

-		fsInfo.m_pFileSystemDLLName,

-		FILESYSTEM_INTERFACE_VERSION,

-		&fsInfo.m_pModule,

-		(void**)&fsInfo.m_pFileSystem ) )

-	{

-		return SetupFileSystemError( false, FS_UNABLE_TO_INIT, "Can't load %s.", fsInfo.m_pFileSystemDLLName );

-	}

-

-	if ( !fsInfo.m_pFileSystem->Connect( fsInfo.m_ConnectFactory ) )

-		return SetupFileSystemError( false, FS_UNABLE_TO_INIT, "%s IFileSystem::Connect failed.", fsInfo.m_pFileSystemDLLName );

-

-	if ( fsInfo.m_pFileSystem->Init() != INIT_OK )

-		return SetupFileSystemError( false, FS_UNABLE_TO_INIT, "%s IFileSystem::Init failed.", fsInfo.m_pFileSystemDLLName );

-

-	return FS_OK;

-}

-

-

-//-----------------------------------------------------------------------------

-// Mounds a particular steam cache

-//-----------------------------------------------------------------------------

-FSReturnCode_t FileSystem_MountContent( CFSMountContentInfo &mountContentInfo )

-{

-	// This part is Steam-only.

-	if ( mountContentInfo.m_pFileSystem->IsSteam() )

-	{

-		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "Should not be using filesystem_steam anymore!" );

-

-//		// Find out the "extra app id". This is for tools, which want to mount a base app's filesystem

-//		// like HL2, then mount the SDK content (tools materials and models, etc) in addition.

-//		int nExtraAppId = -1;

-//		if ( mountContentInfo.m_bToolsMode )

-//		{

-//			// !FIXME! Here we need to mount the tools content (VPK's) in some way...?

-//		}

-//

-//		// Set our working directory temporarily so Steam can remember it.

-//		// This is what Steam strips off absolute filenames like c:\program files\valve\steam\steamapps\username\sourcesdk

-//		// to get to the relative part of the path.

-//		char baseDir[MAX_PATH], oldWorkingDir[MAX_PATH];

-//		if ( !FileSystem_GetBaseDir( baseDir, sizeof( baseDir ) ) )

-//			return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetBaseDir failed." );

-//

-//		Q_getwd( oldWorkingDir, sizeof( oldWorkingDir ) );

-//		_chdir( baseDir );

-//

-//		// Filesystem_tools needs to add dependencies in here beforehand.

-//		FilesystemMountRetval_t retVal = mountContentInfo.m_pFileSystem->MountSteamContent( nExtraAppId );

-//		

-//		_chdir( oldWorkingDir );

-//

-//		if ( retVal != FILESYSTEM_MOUNT_OK )

-//			return SetupFileSystemError( true, FS_UNABLE_TO_INIT, "Unable to mount Steam content in the file system" );

-	}

-

-	return FileSystem_SetBasePaths( mountContentInfo.m_pFileSystem );

-}

-

-void FileSystem_SetErrorMode( FSErrorMode_t errorMode )

-{

-	g_FileSystemErrorMode = errorMode;

-}

-

-void FileSystem_ClearSteamEnvVars()

-{

-	CSteamEnvVars envVars;

-

-	// Change the values and don't restore the originals.

-	envVars.m_SteamAppId.SetValue( "" );

-	envVars.m_SteamUserPassphrase.SetValue( "" );

-	envVars.m_SteamAppUser.SetValue( "" );

-	

-	envVars.SetRestoreOriginalValue_ALL( false );

-}

-

-//-----------------------------------------------------------------------------

-// Adds the platform folder to the search path.

-//-----------------------------------------------------------------------------

-void FileSystem_AddSearchPath_Platform( IFileSystem *pFileSystem, const char *szGameInfoPath )

-{

-	char platform[MAX_PATH];

-	Q_strncpy( platform, szGameInfoPath, MAX_PATH );

-	Q_StripTrailingSlash( platform );

-	Q_strncat( platform, "/../platform", MAX_PATH, MAX_PATH );

-

-	pFileSystem->AddSearchPath( platform, "PLATFORM" );

-}

+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#undef PROTECTED_THINGS_ENABLE
+#undef PROTECT_FILEIO_FUNCTIONS
+#ifndef POSIX
+#undef fopen
+#endif
+
+#if defined( _WIN32 ) && !defined( _X360 )
+#include <windows.h>
+#include <direct.h>
+#include <io.h>
+#include <process.h>
+#elif defined( POSIX )
+#include <unistd.h>
+#define _chdir chdir
+#define _access access
+#endif
+#include <stdio.h>
+#include <sys/stat.h>
+#include "tier1/strtools.h"
+#include "tier1/utlbuffer.h"
+#include "filesystem_init.h"
+#include "tier0/icommandline.h"
+#include "KeyValues.h"
+#include "appframework/IAppSystemGroup.h"
+#include "tier1/smartptr.h"
+#if defined( _X360 )
+#include "xbox\xbox_win32stubs.h"
+#endif
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include <tier0/memdbgon.h>
+
+#if !defined( _X360 )
+#define GAMEINFO_FILENAME			"gameinfo.txt"
+#else
+// The .xtx file is a TCR requirement, as .txt files cannot live on the DVD.
+// The .xtx file only exists outside the zips (same as .txt and is made during the image build) and is read to setup the search paths.
+// So all other code should be able to safely expect gameinfo.txt after the zip is mounted as the .txt file exists inside the zips.
+// The .xtx concept is private and should only have to occurr here. As a safety measure, if the .xtx file is not found
+// a retry is made with the original .txt name
+#define GAMEINFO_FILENAME			"gameinfo.xtx"
+#endif
+#define GAMEINFO_FILENAME_ALTERNATE	"gameinfo.txt"
+
+static char g_FileSystemError[256];
+static bool s_bUseVProjectBinDir = false;
+static FSErrorMode_t g_FileSystemErrorMode = FS_ERRORMODE_VCONFIG;
+
+// Call this to use a bin directory relative to VPROJECT
+void FileSystem_UseVProjectBinDir( bool bEnable )
+{
+	s_bUseVProjectBinDir = bEnable;
+}
+
+// This class lets you modify environment variables, and it restores the original value
+// when it goes out of scope.
+class CTempEnvVar
+{
+public:
+	CTempEnvVar( const char *pVarName )
+	{
+		m_bRestoreOriginalValue = true;
+		m_pVarName = pVarName;
+
+		const char *pValue = NULL;
+
+#ifdef _WIN32
+		// Use GetEnvironmentVariable instead of getenv because getenv doesn't pick up changes
+		// to the process environment after the DLL was loaded.
+		char szBuf[ 4096 ];
+		if ( GetEnvironmentVariable( m_pVarName, szBuf, sizeof( szBuf ) ) != 0)
+		{
+			pValue = szBuf;
+		}
+#else
+		// LINUX BUG: see above
+		pValue = getenv( pVarName );
+#endif 
+
+		if ( pValue )
+		{
+			m_bExisted = true;
+			m_OriginalValue.SetSize( strlen( pValue ) + 1 );
+			memcpy( m_OriginalValue.Base(), pValue, m_OriginalValue.Count() );
+		}
+		else
+		{
+			m_bExisted = false;
+		}
+	}
+
+	~CTempEnvVar()
+	{
+		if ( m_bRestoreOriginalValue )
+		{
+			// Restore the original value.
+			if ( m_bExisted )
+			{
+				SetValue( "%s", m_OriginalValue.Base() );
+			}
+			else
+			{
+				ClearValue();
+			}
+		}
+	}
+
+	void SetRestoreOriginalValue( bool bRestore )
+	{
+		m_bRestoreOriginalValue = bRestore;
+	}
+
+	int GetValue(char *pszBuf, int nBufSize )
+	{
+		if ( !pszBuf || ( nBufSize <= 0 ) )
+			return 0;
+	
+#ifdef _WIN32
+		// Use GetEnvironmentVariable instead of getenv because getenv doesn't pick up changes
+		// to the process environment after the DLL was loaded.
+		return GetEnvironmentVariable( m_pVarName, pszBuf, nBufSize );
+#else
+		// LINUX BUG: see above
+		const char *pszOut = getenv( m_pVarName );
+		if ( !pszOut )
+		{
+			*pszBuf = '\0';
+			return 0;
+		}
+
+		Q_strncpy( pszBuf, pszOut, nBufSize );		
+		return Q_strlen( pszBuf );
+#endif
+	}
+
+	void SetValue( const char *pValue, ... )
+	{
+		char valueString[4096];
+		va_list marker;
+		va_start( marker, pValue );
+		Q_vsnprintf( valueString, sizeof( valueString ), pValue, marker );
+		va_end( marker );
+
+#ifdef WIN32
+		char str[4096];
+		Q_snprintf( str, sizeof( str ), "%s=%s", m_pVarName, valueString );
+		_putenv( str );
+#else
+		setenv( m_pVarName, valueString, 1 );
+#endif
+	}
+
+	void ClearValue()
+	{
+#ifdef WIN32
+		char str[512];
+		Q_snprintf( str, sizeof( str ), "%s=", m_pVarName );
+		_putenv( str );
+#else
+		setenv( m_pVarName, "", 1 );
+#endif
+	}
+
+private:
+	bool m_bRestoreOriginalValue;
+	const char *m_pVarName;
+	bool m_bExisted;
+	CUtlVector<char> m_OriginalValue;
+};
+
+
+class CSteamEnvVars
+{
+public:
+	CSteamEnvVars() :
+		m_SteamAppId( "SteamAppId" ),
+		m_SteamUserPassphrase( "SteamUserPassphrase" ),
+		m_SteamAppUser( "SteamAppUser" ),
+		m_Path( "path" )
+	{
+	}
+	
+	void SetRestoreOriginalValue_ALL( bool bRestore )
+	{
+		m_SteamAppId.SetRestoreOriginalValue( bRestore );
+		m_SteamUserPassphrase.SetRestoreOriginalValue( bRestore );
+		m_SteamAppUser.SetRestoreOriginalValue( bRestore );
+		m_Path.SetRestoreOriginalValue( bRestore );
+	}
+
+	CTempEnvVar m_SteamAppId;
+	CTempEnvVar m_SteamUserPassphrase;
+	CTempEnvVar m_SteamAppUser;
+	CTempEnvVar m_Path;
+};
+
+// ---------------------------------------------------------------------------------------------------- //
+// Helpers.
+// ---------------------------------------------------------------------------------------------------- //
+void Q_getwd( char *out, int outSize )
+{
+#if defined( _WIN32 ) || defined( WIN32 )
+	_getcwd( out, outSize );
+	Q_strncat( out, "\\", outSize, COPY_ALL_CHARACTERS );
+#else
+	getcwd( out, outSize );
+	strcat( out, "/" );
+#endif
+	Q_FixSlashes( out );
+}
+
+// ---------------------------------------------------------------------------------------------------- //
+// Module interface.
+// ---------------------------------------------------------------------------------------------------- //
+
+CFSSearchPathsInit::CFSSearchPathsInit()
+{
+	m_pDirectoryName = NULL;
+	m_pLanguage = NULL;
+	m_ModPath[0] = 0;
+}
+
+
+CFSSteamSetupInfo::CFSSteamSetupInfo()
+{
+	m_pDirectoryName = NULL;
+	m_bOnlyUseDirectoryName = false;
+	m_bSteam = false;
+	m_bToolsMode = true;
+	m_bNoGameInfo = false;
+}
+
+
+CFSLoadModuleInfo::CFSLoadModuleInfo()
+{
+	m_pFileSystemDLLName = NULL;
+	m_pFileSystem = NULL;
+	m_pModule = NULL;
+}
+
+
+CFSMountContentInfo::CFSMountContentInfo()
+{
+	m_bToolsMode = true;
+	m_pDirectoryName = NULL;
+	m_pFileSystem = NULL;
+}
+
+
+const char *FileSystem_GetLastErrorString()
+{
+	return g_FileSystemError;
+}
+
+
+KeyValues* ReadKeyValuesFile( const char *pFilename )
+{
+	// Read in the gameinfo.txt file and null-terminate it.
+	FILE *fp = fopen( pFilename, "rb" );
+	if ( !fp )
+		return NULL;
+	CUtlVector<char> buf;
+	fseek( fp, 0, SEEK_END );
+	buf.SetSize( ftell( fp ) + 1 );
+	fseek( fp, 0, SEEK_SET );
+	fread( buf.Base(), 1, buf.Count()-1, fp );
+	fclose( fp );
+	buf[buf.Count()-1] = 0;
+
+	KeyValues *kv = new KeyValues( "" );
+	if ( !kv->LoadFromBuffer( pFilename, buf.Base() ) )
+	{
+		kv->deleteThis();
+		return NULL;
+	}
+	
+	return kv;
+}
+
+static bool Sys_GetExecutableName( char *out, int len )
+{
+#if defined( _WIN32 )
+    if ( !::GetModuleFileName( ( HINSTANCE )GetModuleHandle( NULL ), out, len ) )
+    {
+		return false;
+    }
+#else
+	if ( CommandLine()->GetParm(0) )
+	{
+		Q_MakeAbsolutePath( out, len, CommandLine()->GetParm(0) );
+	}
+	else
+	{
+		return false;
+	}
+#endif
+
+	return true;
+}
+
+bool FileSystem_GetExecutableDir( char *exedir, int exeDirLen )
+{
+	exedir[0] = 0;
+
+	if ( s_bUseVProjectBinDir )
+	{
+		const char *pProject = GetVProjectCmdLineValue();
+		if ( !pProject )
+		{
+			// Check their registry.
+			pProject = getenv( GAMEDIR_TOKEN );
+		}
+		if ( pProject )
+		{
+			Q_snprintf( exedir, exeDirLen, "%s%c..%cbin", pProject, CORRECT_PATH_SEPARATOR, CORRECT_PATH_SEPARATOR );
+			return true;
+		}
+		return false;
+	}
+
+	if ( !Sys_GetExecutableName( exedir, exeDirLen ) )
+		return false;
+	Q_StripFilename( exedir );
+
+	if ( IsX360() )
+	{
+		// The 360 can have its exe and dlls reside on different volumes
+		// use the optional basedir as the exe dir
+		if ( CommandLine()->FindParm( "-basedir" ) )
+		{
+			strcpy( exedir, CommandLine()->ParmValue( "-basedir", "" ) );
+		}
+	}
+
+	Q_FixSlashes( exedir );
+
+	// Return the bin directory as the executable dir if it's not in there
+	// because that's really where we're running from...
+	char ext[MAX_PATH];
+	Q_StrRight( exedir, 4, ext, sizeof( ext ) );
+	if ( ext[0] != CORRECT_PATH_SEPARATOR || Q_stricmp( ext+1, "bin" ) != 0 )
+	{
+		Q_strncat( exedir, CORRECT_PATH_SEPARATOR_S, exeDirLen, COPY_ALL_CHARACTERS );
+		Q_strncat( exedir, "bin", exeDirLen, COPY_ALL_CHARACTERS );
+		Q_FixSlashes( exedir );
+	}
+	
+	return true;
+}
+
+static bool FileSystem_GetBaseDir( char *baseDir, int baseDirLen )
+{
+	if ( FileSystem_GetExecutableDir( baseDir, baseDirLen ) )
+	{
+		Q_StripFilename( baseDir );
+		return true;
+	}
+	
+	return false;
+}
+
+void LaunchVConfig()
+{
+#if defined( _WIN32 ) && !defined( _X360 )
+	char vconfigExe[MAX_PATH];
+	FileSystem_GetExecutableDir( vconfigExe, sizeof( vconfigExe ) );
+	Q_AppendSlash( vconfigExe, sizeof( vconfigExe ) );
+	Q_strncat( vconfigExe, "vconfig.exe", sizeof( vconfigExe ), COPY_ALL_CHARACTERS );
+
+	char *argv[] =
+	{
+		vconfigExe,
+		"-allowdebug",
+		NULL
+	};
+
+	_spawnv( _P_NOWAIT, vconfigExe, argv );
+#elif defined( _X360 )
+	Msg( "Launching vconfig.exe not supported\n" );
+#endif
+}
+
+const char* GetVProjectCmdLineValue()
+{
+	return CommandLine()->ParmValue( "-vproject", CommandLine()->ParmValue( "-game" ) );
+}
+
+FSReturnCode_t SetupFileSystemError( bool bRunVConfig, FSReturnCode_t retVal, const char *pMsg, ... )
+{
+	va_list marker;
+	va_start( marker, pMsg );
+	Q_vsnprintf( g_FileSystemError, sizeof( g_FileSystemError ), pMsg, marker );
+	va_end( marker );
+
+	Warning( "%s\n", g_FileSystemError );
+
+	// Run vconfig?
+	// Don't do it if they specifically asked for it not to, or if they manually specified a vconfig with -game or -vproject.
+	if ( bRunVConfig && g_FileSystemErrorMode == FS_ERRORMODE_VCONFIG && !CommandLine()->FindParm( CMDLINEOPTION_NOVCONFIG ) && !GetVProjectCmdLineValue() )
+	{
+		LaunchVConfig();
+	}
+
+	if ( g_FileSystemErrorMode == FS_ERRORMODE_AUTO || g_FileSystemErrorMode == FS_ERRORMODE_VCONFIG )
+	{
+		Error( "%s\n", g_FileSystemError );
+	}
+	
+	return retVal;
+}
+
+FSReturnCode_t LoadGameInfoFile( 
+	const char *pDirectoryName, 
+	KeyValues *&pMainFile, 
+	KeyValues *&pFileSystemInfo, 
+	KeyValues *&pSearchPaths )
+{
+	// If GameInfo.txt exists under pBaseDir, then this is their game directory.
+	// All the filesystem mappings will be in this file.
+	char gameinfoFilename[MAX_PATH];
+	Q_strncpy( gameinfoFilename, pDirectoryName, sizeof( gameinfoFilename ) );
+	Q_AppendSlash( gameinfoFilename, sizeof( gameinfoFilename ) );
+	Q_strncat( gameinfoFilename, GAMEINFO_FILENAME, sizeof( gameinfoFilename ), COPY_ALL_CHARACTERS );
+	Q_FixSlashes( gameinfoFilename );
+	pMainFile = ReadKeyValuesFile( gameinfoFilename );
+	if ( IsX360() && !pMainFile )
+	{
+		// try again
+		Q_strncpy( gameinfoFilename, pDirectoryName, sizeof( gameinfoFilename ) );
+		Q_AppendSlash( gameinfoFilename, sizeof( gameinfoFilename ) );
+		Q_strncat( gameinfoFilename, GAMEINFO_FILENAME_ALTERNATE, sizeof( gameinfoFilename ), COPY_ALL_CHARACTERS );
+		Q_FixSlashes( gameinfoFilename );
+		pMainFile = ReadKeyValuesFile( gameinfoFilename );
+	}
+	if ( !pMainFile )
+	{
+		return SetupFileSystemError( true, FS_MISSING_GAMEINFO_FILE, "%s is missing.", gameinfoFilename );
+	}
+
+	pFileSystemInfo = pMainFile->FindKey( "FileSystem" );
+	if ( !pFileSystemInfo )
+	{
+		pMainFile->deleteThis();
+		return SetupFileSystemError( true, FS_INVALID_GAMEINFO_FILE, "%s is not a valid format.", gameinfoFilename );
+	}
+
+	// Now read in all the search paths.
+	pSearchPaths = pFileSystemInfo->FindKey( "SearchPaths" );
+	if ( !pSearchPaths )
+	{
+		pMainFile->deleteThis();
+		return SetupFileSystemError( true, FS_INVALID_GAMEINFO_FILE, "%s is not a valid format.", gameinfoFilename );
+	}
+	return FS_OK;
+}
+
+// checks the registry for the low violence setting
+// Check "HKEY_CURRENT_USER\Software\Valve\Source\Settings" and "User Token 2" or "User Token 3"
+bool IsLowViolenceBuild( void )
+{
+#if defined(_WIN32)
+	HKEY hKey;
+	char szValue[64];
+	unsigned long len = sizeof(szValue) - 1;
+	bool retVal = false;
+	
+	if ( IsPC() && RegOpenKeyEx( HKEY_CURRENT_USER, "Software\\Valve\\Source\\Settings", NULL, KEY_READ, &hKey) == ERROR_SUCCESS )
+	{
+		// User Token 2
+		if ( RegQueryValueEx( hKey, "User Token 2", NULL, NULL, (unsigned char*)szValue, &len ) == ERROR_SUCCESS )
+		{
+			if ( Q_strlen( szValue ) > 0 )
+			{
+				retVal = true;
+			}
+		}
+
+		if ( !retVal )
+		{
+			// reset "len" for the next check
+			len = sizeof(szValue) - 1;
+
+			// User Token 3
+			if ( RegQueryValueEx( hKey, "User Token 3", NULL, NULL, (unsigned char*)szValue, &len ) == ERROR_SUCCESS )
+			{
+				if ( Q_strlen( szValue ) > 0 )
+				{
+					retVal = true;
+				}
+			}
+		}
+
+		RegCloseKey(hKey);
+	}
+
+	return retVal;
+#elif POSIX
+	return false;
+#else
+	#error "Fix me"
+#endif
+}
+
+static void FileSystem_AddLoadedSearchPath( 
+	CFSSearchPathsInit &initInfo, 
+	const char *pPathID, 
+	const char *fullLocationPath, 
+	bool bLowViolence )
+{
+
+	// Check for mounting LV game content in LV builds only
+	if ( V_stricmp( pPathID, "game_lv" ) == 0 )
+	{
+
+		// Not in LV build, don't mount
+		if ( !bLowViolence )
+			return;
+
+		// Mount, as a game path
+		pPathID = "game";
+	}
+
+	// Special processing for ordinary game folders
+	if ( V_stristr( fullLocationPath, ".vpk" ) == NULL && Q_stricmp( pPathID, "game" ) == 0 )
+	{
+		if ( CommandLine()->FindParm( "-tempcontent" ) != 0 )
+		{
+			char szPath[MAX_PATH];
+			Q_snprintf( szPath, sizeof(szPath), "%s_tempcontent", fullLocationPath );
+			initInfo.m_pFileSystem->AddSearchPath( szPath, pPathID, PATH_ADD_TO_TAIL );
+		}
+	}
+
+	
+	if ( initInfo.m_pLanguage &&
+	     Q_stricmp( initInfo.m_pLanguage, "english" ) &&
+	     V_strstr( fullLocationPath, "_english" ) != NULL )
+	{
+		char szPath[MAX_PATH];
+		char szLangString[MAX_PATH];		
+		
+		// Need to add a language version of this path first
+
+		Q_snprintf( szLangString, sizeof(szLangString), "_%s", initInfo.m_pLanguage);
+		V_StrSubst( fullLocationPath, "_english", szLangString, szPath, sizeof( szPath ), true );
+		initInfo.m_pFileSystem->AddSearchPath( szPath, pPathID, PATH_ADD_TO_TAIL );		
+	}
+
+	initInfo.m_pFileSystem->AddSearchPath( fullLocationPath, pPathID, PATH_ADD_TO_TAIL );
+}
+
+static int SortStricmp( char * const * sz1, char * const * sz2 )
+{
+	return V_stricmp( *sz1, *sz2 );
+}
+
+FSReturnCode_t FileSystem_LoadSearchPaths( CFSSearchPathsInit &initInfo )
+{
+	if ( !initInfo.m_pFileSystem || !initInfo.m_pDirectoryName )
+		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_LoadSearchPaths: Invalid parameters specified." );
+
+	KeyValues *pMainFile, *pFileSystemInfo, *pSearchPaths;
+	FSReturnCode_t retVal = LoadGameInfoFile( initInfo.m_pDirectoryName, pMainFile, pFileSystemInfo, pSearchPaths );
+	if ( retVal != FS_OK )
+		return retVal;
+	
+	// All paths except those marked with |gameinfo_path| are relative to the base dir.
+	char baseDir[MAX_PATH];
+	if ( !FileSystem_GetBaseDir( baseDir, sizeof( baseDir ) ) )
+		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetBaseDir failed." );
+
+	// The MOD directory is always the one that contains gameinfo.txt
+	Q_strncpy( initInfo.m_ModPath, initInfo.m_pDirectoryName, sizeof( initInfo.m_ModPath ) );
+
+	#define GAMEINFOPATH_TOKEN		"|gameinfo_path|"
+	#define BASESOURCEPATHS_TOKEN	"|all_source_engine_paths|"
+
+	const char *pszExtraSearchPath = CommandLine()->ParmValue( "-insert_search_path" );
+	if ( pszExtraSearchPath )
+	{
+		CUtlStringList vecPaths;
+		V_SplitString( pszExtraSearchPath, ",", vecPaths );
+		FOR_EACH_VEC( vecPaths, idxExtraPath )
+		{
+			char szAbsSearchPath[MAX_PATH];
+			Q_StripPrecedingAndTrailingWhitespace( vecPaths[ idxExtraPath ] );
+			V_MakeAbsolutePath( szAbsSearchPath, sizeof( szAbsSearchPath ), vecPaths[ idxExtraPath ], baseDir );
+			V_FixSlashes( szAbsSearchPath );
+			if ( !V_RemoveDotSlashes( szAbsSearchPath ) )
+				Error( "Bad -insert_search_path - Can't resolve pathname for '%s'", szAbsSearchPath );
+			V_StripTrailingSlash( szAbsSearchPath );
+			FileSystem_AddLoadedSearchPath( initInfo, "GAME", szAbsSearchPath, false );
+			FileSystem_AddLoadedSearchPath( initInfo, "MOD", szAbsSearchPath, false );
+		}
+	}
+
+	bool bLowViolence = IsLowViolenceBuild();
+	for ( KeyValues *pCur=pSearchPaths->GetFirstValue(); pCur; pCur=pCur->GetNextValue() )
+	{
+		const char *pLocation = pCur->GetString();
+		const char *pszBaseDir = baseDir;
+
+		if ( Q_stristr( pLocation, GAMEINFOPATH_TOKEN ) == pLocation )
+		{
+			pLocation += strlen( GAMEINFOPATH_TOKEN );
+			pszBaseDir = initInfo.m_pDirectoryName;
+		}
+		else if ( Q_stristr( pLocation, BASESOURCEPATHS_TOKEN ) == pLocation )
+		{
+			// This is a special identifier that tells it to add the specified path for all source engine versions equal to or prior to this version.
+			// So in Orange Box, if they specified:
+			//		|all_source_engine_paths|hl2
+			// it would add the ep2\hl2 folder and the base (ep1-era) hl2 folder.
+			//
+			// We need a special identifier in the gameinfo.txt here because the base hl2 folder exists in different places.
+			// In the case of a game or a Steam-launched dedicated server, all the necessary prior engine content is mapped in with the Steam depots,
+			// so we can just use the path as-is.
+			pLocation += strlen( BASESOURCEPATHS_TOKEN );
+		}
+
+		CUtlStringList vecFullLocationPaths;
+		char szAbsSearchPath[MAX_PATH];
+		V_MakeAbsolutePath( szAbsSearchPath, sizeof( szAbsSearchPath ), pLocation, pszBaseDir );
+
+		// Now resolve any ./'s.
+		V_FixSlashes( szAbsSearchPath );
+		if ( !V_RemoveDotSlashes( szAbsSearchPath ) )
+			Error( "FileSystem_AddLoadedSearchPath - Can't resolve pathname for '%s'", szAbsSearchPath );
+		V_StripTrailingSlash( szAbsSearchPath );
+
+		// Don't bother doing any wildcard expansion unless it has wildcards.  This avoids the weird
+		// thing with xxx_dir.vpk files being referred to simply as xxx.vpk.
+		if ( V_stristr( pLocation, "?") == NULL && V_stristr( pLocation, "*") == NULL )
+		{
+			vecFullLocationPaths.CopyAndAddToTail( szAbsSearchPath );
+		}
+		else
+		{
+			FileFindHandle_t findHandle = NULL;
+			const char *pszFoundShortName = initInfo.m_pFileSystem->FindFirst( szAbsSearchPath, &findHandle );
+			if ( pszFoundShortName )
+			{
+				do 
+				{
+
+					// We only know how to mount VPK's and directories
+					if ( pszFoundShortName[0] != '.' && ( initInfo.m_pFileSystem->FindIsDirectory( findHandle ) || V_stristr( pszFoundShortName, ".vpk" ) ) )
+					{
+						char szAbsName[MAX_PATH];
+						V_ExtractFilePath( szAbsSearchPath, szAbsName, sizeof( szAbsName ) );
+						V_AppendSlash( szAbsName, sizeof(szAbsName) );
+						V_strcat_safe( szAbsName, pszFoundShortName );
+
+						vecFullLocationPaths.CopyAndAddToTail( szAbsName );
+
+						// Check for a common mistake
+						if (
+							!V_stricmp( pszFoundShortName, "materials" )
+							|| !V_stricmp( pszFoundShortName, "maps" )
+							|| !V_stricmp( pszFoundShortName, "resource" )
+							|| !V_stricmp( pszFoundShortName, "scripts" )
+							|| !V_stricmp( pszFoundShortName, "sound" )
+							|| !V_stricmp( pszFoundShortName, "models" ) )
+						{
+
+							char szReadme[MAX_PATH];
+							V_ExtractFilePath( szAbsSearchPath, szReadme, sizeof( szReadme ) );
+							V_AppendSlash( szReadme, sizeof(szReadme) );
+							V_strcat_safe( szReadme, "readme.txt" );
+
+							Error(
+								"Tried to add %s as a search path.\n"
+								"\nThis is probably not what you intended.\n"
+								"\nCheck %s for more info\n",
+								szAbsName, szReadme );
+						}
+
+					}
+					pszFoundShortName = initInfo.m_pFileSystem->FindNext( findHandle );
+				} while ( pszFoundShortName );
+				initInfo.m_pFileSystem->FindClose( findHandle );
+			}
+
+			// Sort alphabetically.  Also note that this will put
+			// all the xxx_000.vpk packs just before the corresponding
+			// xxx_dir.vpk
+			vecFullLocationPaths.Sort( SortStricmp );
+
+			// Now for any _dir.vpk files, remove the _nnn.vpk ones.
+			int idx = vecFullLocationPaths.Count()-1;
+			while ( idx > 0 )
+			{
+				char szTemp[ MAX_PATH ];
+				V_strcpy_safe( szTemp, vecFullLocationPaths[ idx ] );
+				--idx;
+
+				char *szDirVpk = V_stristr( szTemp, "_dir.vpk" );
+				if ( szDirVpk != NULL )
+				{
+					*szDirVpk = '\0';
+					while ( idx >= 0 )
+					{
+						char *pszPath = vecFullLocationPaths[ idx ];
+						if ( V_stristr( pszPath, szTemp ) != pszPath )
+							break;
+						delete pszPath;
+						vecFullLocationPaths.Remove( idx );
+						--idx;
+					}
+				}
+			}
+		}
+
+		// Parse Path ID list
+		CUtlStringList vecPathIDs;
+		V_SplitString( pCur->GetName(), "+", vecPathIDs );
+		FOR_EACH_VEC( vecPathIDs, idxPathID )
+		{
+			Q_StripPrecedingAndTrailingWhitespace( vecPathIDs[ idxPathID ] );
+		}
+
+		// Mount them.
+		FOR_EACH_VEC( vecFullLocationPaths, idxLocation )
+		{
+			FOR_EACH_VEC( vecPathIDs, idxPathID )
+			{
+				FileSystem_AddLoadedSearchPath( initInfo, vecPathIDs[ idxPathID ], vecFullLocationPaths[ idxLocation ], bLowViolence );
+			}
+		}
+	}
+
+	pMainFile->deleteThis();
+
+	// Also, mark specific path IDs as "by request only". That way, we won't waste time searching in them
+	// when people forget to specify a search path.
+	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "executable_path", true );
+	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "gamebin", true );
+	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "download", true );
+	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "mod", true );
+	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "game_write", true );
+	initInfo.m_pFileSystem->MarkPathIDByRequestOnly( "mod_write", true );
+
+#ifdef _DEBUG	
+	// initInfo.m_pFileSystem->PrintSearchPaths();
+#endif
+
+	return FS_OK;
+}
+
+bool DoesFileExistIn( const char *pDirectoryName, const char *pFilename )
+{
+	char filename[MAX_PATH];
+
+	Q_strncpy( filename, pDirectoryName, sizeof( filename ) );
+	Q_AppendSlash( filename, sizeof( filename ) );
+	Q_strncat( filename, pFilename, sizeof( filename ), COPY_ALL_CHARACTERS );
+	Q_FixSlashes( filename );
+	bool bExist = ( _access( filename, 0 ) == 0 );
+
+	return ( bExist );
+}
+
+namespace
+{
+	SuggestGameInfoDirFn_t & GetSuggestGameInfoDirFn( void )
+	{
+		static SuggestGameInfoDirFn_t s_pfnSuggestGameInfoDir = NULL;
+		return s_pfnSuggestGameInfoDir;
+	}
+}; // `anonymous` namespace
+
+SuggestGameInfoDirFn_t SetSuggestGameInfoDirFn( SuggestGameInfoDirFn_t pfnNewFn )
+{
+	SuggestGameInfoDirFn_t &rfn = GetSuggestGameInfoDirFn();
+	SuggestGameInfoDirFn_t pfnOldFn = rfn;
+	rfn = pfnNewFn;
+	return pfnOldFn;
+}
+
+static FSReturnCode_t TryLocateGameInfoFile( char *pOutDir, int outDirLen, bool bBubbleDir )
+{
+	// Retain a copy of suggested path for further attempts
+	CArrayAutoPtr < char > spchCopyNameBuffer( new char [ outDirLen ] );
+	Q_strncpy( spchCopyNameBuffer.Get(), pOutDir, outDirLen );
+	spchCopyNameBuffer[ outDirLen - 1 ] = 0;
+
+	// Make appropriate slashes ('/' - Linux style)
+	for ( char *pchFix = spchCopyNameBuffer.Get(),
+		*pchEnd = pchFix + outDirLen;
+		pchFix < pchEnd; ++ pchFix )
+	{
+		if ( '\\' == *pchFix )
+		{
+			*pchFix = '/';
+		}
+	}
+
+	// Have a look in supplied path
+	do
+	{
+		if ( DoesFileExistIn( pOutDir, GAMEINFO_FILENAME ) )
+		{
+			return FS_OK;
+		}
+		if ( IsX360() && DoesFileExistIn( pOutDir, GAMEINFO_FILENAME_ALTERNATE ) ) 
+		{
+			return FS_OK;
+		}
+	} 
+	while ( bBubbleDir && Q_StripLastDir( pOutDir, outDirLen ) );
+
+	// Make an attempt to resolve from "content -> game" directory
+	Q_strncpy( pOutDir, spchCopyNameBuffer.Get(), outDirLen );
+	pOutDir[ outDirLen - 1 ] = 0;
+	if ( char *pchContentFix = Q_stristr( pOutDir, "/content/" ) )
+	{
+		sprintf( pchContentFix, "/game/" );
+		memmove( pchContentFix + 6, pchContentFix + 9, pOutDir + outDirLen - (pchContentFix + 9) );
+
+		// Try in the mapped "game" directory
+		do
+		{
+			if ( DoesFileExistIn( pOutDir, GAMEINFO_FILENAME ) )
+			{
+				return FS_OK;
+			}
+			if ( IsX360() && DoesFileExistIn( pOutDir, GAMEINFO_FILENAME_ALTERNATE ) )
+			{
+				return FS_OK;
+			}
+		} 
+		while ( bBubbleDir && Q_StripLastDir( pOutDir, outDirLen ) );
+	}
+
+	// Could not find it here
+	return FS_MISSING_GAMEINFO_FILE;
+}
+
+FSReturnCode_t LocateGameInfoFile( const CFSSteamSetupInfo &fsInfo, char *pOutDir, int outDirLen )
+{
+	// Engine and Hammer don't want to search around for it.
+	if ( fsInfo.m_bOnlyUseDirectoryName )
+	{
+		if ( !fsInfo.m_pDirectoryName )
+			return SetupFileSystemError( false, FS_MISSING_GAMEINFO_FILE, "bOnlyUseDirectoryName=1 and pDirectoryName=NULL." );
+
+		bool bExists = DoesFileExistIn( fsInfo.m_pDirectoryName, GAMEINFO_FILENAME );
+		if ( IsX360() && !bExists )
+		{
+			bExists = DoesFileExistIn( fsInfo.m_pDirectoryName, GAMEINFO_FILENAME_ALTERNATE );
+		}
+		if ( !bExists )
+		{
+			if ( IsX360() && CommandLine()->FindParm( "-basedir" ) )
+			{
+				char basePath[MAX_PATH];
+				strcpy( basePath, CommandLine()->ParmValue( "-basedir", "" ) );
+				Q_AppendSlash( basePath, sizeof( basePath ) );
+				Q_strncat( basePath, fsInfo.m_pDirectoryName, sizeof( basePath ), COPY_ALL_CHARACTERS );
+				if ( DoesFileExistIn( basePath, GAMEINFO_FILENAME ) )
+				{
+					Q_strncpy( pOutDir, basePath, outDirLen );
+					return FS_OK;
+				}
+				if ( IsX360() && DoesFileExistIn( basePath, GAMEINFO_FILENAME_ALTERNATE ) )
+				{
+					Q_strncpy( pOutDir, basePath, outDirLen );
+					return FS_OK;
+				}
+			}
+
+			return SetupFileSystemError( true, FS_MISSING_GAMEINFO_FILE, "Setup file '%s' doesn't exist in subdirectory '%s'.\nCheck your -game parameter or VCONFIG setting.", GAMEINFO_FILENAME, fsInfo.m_pDirectoryName );
+		}
+
+		Q_strncpy( pOutDir, fsInfo.m_pDirectoryName, outDirLen );
+		return FS_OK;
+	}
+
+	// First, check for overrides on the command line or environment variables.
+	const char *pProject = GetVProjectCmdLineValue();
+
+	if ( pProject )
+	{
+		if ( DoesFileExistIn( pProject, GAMEINFO_FILENAME ) )
+		{
+			Q_MakeAbsolutePath( pOutDir, outDirLen, pProject );
+			return FS_OK;
+		}
+		if ( IsX360() && DoesFileExistIn( pProject, GAMEINFO_FILENAME_ALTERNATE ) )	
+		{
+			Q_MakeAbsolutePath( pOutDir, outDirLen, pProject );
+			return FS_OK;
+		}
+
+		if ( IsX360() && CommandLine()->FindParm( "-basedir" ) )
+		{
+			char basePath[MAX_PATH];
+			strcpy( basePath, CommandLine()->ParmValue( "-basedir", "" ) );
+			Q_AppendSlash( basePath, sizeof( basePath ) );
+			Q_strncat( basePath, pProject, sizeof( basePath ), COPY_ALL_CHARACTERS );
+			if ( DoesFileExistIn( basePath, GAMEINFO_FILENAME ) )
+			{
+				Q_strncpy( pOutDir, basePath, outDirLen );
+				return FS_OK;
+			}
+			if ( DoesFileExistIn( basePath, GAMEINFO_FILENAME_ALTERNATE ) )
+			{
+				Q_strncpy( pOutDir, basePath, outDirLen );
+				return FS_OK;
+			}
+		}
+		
+		if ( fsInfo.m_bNoGameInfo )
+		{
+			// fsInfo.m_bNoGameInfo is set by the Steam dedicated server, before it knows which mod to use.
+			// Steam dedicated server doesn't need a gameinfo.txt, because we'll ask which mod to use, even if
+			// -game is supplied on the command line.
+			Q_strncpy( pOutDir, "", outDirLen );
+			return FS_OK;
+		}
+		else
+		{
+			// They either specified vproject on the command line or it's in their registry. Either way,
+			// we don't want to continue if they've specified it but it's not valid.
+			goto ShowError;
+		}
+	}
+
+	if ( fsInfo.m_bNoGameInfo )
+	{
+		Q_strncpy( pOutDir, "", outDirLen );
+		return FS_OK;
+	}
+
+	// Ask the application if it can provide us with a game info directory
+	{
+		bool bBubbleDir = true;
+		SuggestGameInfoDirFn_t pfnSuggestGameInfoDirFn = GetSuggestGameInfoDirFn();
+		if ( pfnSuggestGameInfoDirFn &&
+			( * pfnSuggestGameInfoDirFn )( &fsInfo, pOutDir, outDirLen, &bBubbleDir ) &&
+			FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, bBubbleDir ) )
+			return FS_OK;
+	}
+
+	// Try to use the environment variable / registry
+	if ( ( pProject = getenv( GAMEDIR_TOKEN ) ) != NULL &&
+		 ( Q_MakeAbsolutePath( pOutDir, outDirLen, pProject ), 1 ) &&
+		 FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, false ) )
+		return FS_OK;
+
+	if ( IsPC() )
+	{
+		Warning( "Warning: falling back to auto detection of vproject directory.\n" );
+		
+		// Now look for it in the directory they passed in.
+		if ( fsInfo.m_pDirectoryName )
+			Q_MakeAbsolutePath( pOutDir, outDirLen, fsInfo.m_pDirectoryName );
+		else
+			Q_MakeAbsolutePath( pOutDir, outDirLen, "." );
+
+		if ( FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, true ) )
+			return FS_OK;
+
+		// Use the CWD
+		Q_getwd( pOutDir, outDirLen );
+		if ( FS_OK == TryLocateGameInfoFile( pOutDir, outDirLen, true ) )
+			return FS_OK;
+	}
+
+ShowError:
+	return SetupFileSystemError( true, FS_MISSING_GAMEINFO_FILE, 
+		"Unable to find %s. Solutions:\n\n"
+		"1. Read http://www.valve-erc.com/srcsdk/faq.html#NoGameDir\n"
+		"2. Run vconfig to specify which game you're working on.\n"
+		"3. Add -game <path> on the command line where <path> is the directory that %s is in.\n",
+		GAMEINFO_FILENAME, GAMEINFO_FILENAME );
+}
+
+bool DoesPathExistAlready( const char *pPathEnvVar, const char *pTestPath )
+{
+	// Fix the slashes in the input arguments.
+	char correctedPathEnvVar[8192], correctedTestPath[MAX_PATH];
+	Q_strncpy( correctedPathEnvVar, pPathEnvVar, sizeof( correctedPathEnvVar ) );
+	Q_FixSlashes( correctedPathEnvVar );
+	pPathEnvVar = correctedPathEnvVar;
+
+	Q_strncpy( correctedTestPath, pTestPath, sizeof( correctedTestPath ) );
+	Q_FixSlashes( correctedTestPath );
+	if ( strlen( correctedTestPath ) > 0 && PATHSEPARATOR( correctedTestPath[strlen(correctedTestPath)-1] ) )
+		correctedTestPath[ strlen(correctedTestPath) - 1 ] = 0;
+
+	pTestPath = correctedTestPath;
+
+	const char *pCurPos = pPathEnvVar;
+	while ( 1 )
+	{
+		const char *pTestPos = Q_stristr( pCurPos, pTestPath );
+		if ( !pTestPos )
+			return false;
+
+		// Ok, we found pTestPath in the path, but it's only valid if it's followed by an optional slash and a semicolon.
+		pTestPos += strlen( pTestPath );
+		if ( pTestPos[0] == 0 || pTestPos[0] == ';' || (PATHSEPARATOR( pTestPos[0] ) && pTestPos[1] == ';') )
+			return true;
+	
+		// Advance our marker..
+		pCurPos = pTestPos;
+	}
+}
+
+FSReturnCode_t SetSteamInstallPath( char *steamInstallPath, int steamInstallPathLen, CSteamEnvVars &steamEnvVars, bool bErrorsAsWarnings )
+{
+	if ( IsConsole() )
+	{
+		// consoles don't use steam
+		return FS_MISSING_STEAM_DLL;
+	}
+
+	if ( IsPosix() )
+		return FS_OK; // under posix the content does not live with steam.dll up the path, rely on the environment already being set by steam
+	
+	// Start at our bin directory and move up until we find a directory with steam.dll in it.
+	char executablePath[MAX_PATH];
+	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) )	)
+	{
+		if ( bErrorsAsWarnings )
+		{
+			Warning( "SetSteamInstallPath: FileSystem_GetExecutableDir failed.\n" );
+			return FS_INVALID_PARAMETERS;
+		}
+		else
+		{
+			return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );
+		}
+	}
+
+	Q_strncpy( steamInstallPath, executablePath, steamInstallPathLen );
+#ifdef WIN32
+	const char *pchSteamDLL = "steam" DLL_EXT_STRING;
+#elif defined(POSIX)
+	// under osx the bin lives in the bin/ folder, so step back one
+	Q_StripLastDir( steamInstallPath, steamInstallPathLen );
+	const char *pchSteamDLL = "libsteam" DLL_EXT_STRING;	
+#else
+	#error
+#endif
+	while ( 1 )
+	{
+		// Ignore steamapp.cfg here in case they're debugging. We still need to know the real steam path so we can find their username.
+		// find 
+		if ( DoesFileExistIn( steamInstallPath, pchSteamDLL ) && !DoesFileExistIn( steamInstallPath, "steamapp.cfg" ) )
+			break;
+	
+		if ( !Q_StripLastDir( steamInstallPath, steamInstallPathLen ) )
+		{
+			if ( bErrorsAsWarnings )
+			{
+				Warning( "Can't find %s relative to executable path: %s.\n", pchSteamDLL, executablePath );
+				return FS_MISSING_STEAM_DLL;
+			}
+			else
+			{
+				return SetupFileSystemError( false, FS_MISSING_STEAM_DLL, "Can't find %s relative to executable path: %s.", pchSteamDLL, executablePath );
+			}
+		}			
+	}
+
+	// Also, add the install path to their PATH environment variable, so filesystem_steam.dll can get to steam.dll.
+	char szPath[ 8192 ];
+	steamEnvVars.m_Path.GetValue( szPath, sizeof( szPath ) );
+	if ( !DoesPathExistAlready( szPath, steamInstallPath ) )
+	{
+#ifdef WIN32
+#define PATH_SEP ";"
+#else
+#define PATH_SEP ":"
+#endif	
+		steamEnvVars.m_Path.SetValue( "%s%s%s", szPath, PATH_SEP, steamInstallPath );
+	}
+	return FS_OK;
+}
+
+FSReturnCode_t GetSteamCfgPath( char *steamCfgPath, int steamCfgPathLen )
+{
+	steamCfgPath[0] = 0;
+	char executablePath[MAX_PATH];
+	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) ) )
+	{
+		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );
+	}
+	Q_strncpy( steamCfgPath, executablePath, steamCfgPathLen );
+	while ( 1 )
+	{
+		if ( DoesFileExistIn( steamCfgPath, "steam.cfg" ) )
+			break;
+	
+		if ( !Q_StripLastDir( steamCfgPath, steamCfgPathLen) )
+		{
+			// the file isnt found, thats ok, its not mandatory
+			return FS_OK;
+		}			
+	}
+	Q_AppendSlash( steamCfgPath, steamCfgPathLen );
+	Q_strncat( steamCfgPath, "steam.cfg", steamCfgPathLen, COPY_ALL_CHARACTERS );
+
+	return FS_OK;
+}
+
+void SetSteamAppUser( KeyValues *pSteamInfo, const char *steamInstallPath, CSteamEnvVars &steamEnvVars )
+{
+	// Always inherit the Steam user if it's already set, since it probably means we (or the
+	// the app that launched us) were launched from Steam.
+	char appUser[MAX_PATH];
+	if ( steamEnvVars.m_SteamAppUser.GetValue( appUser, sizeof( appUser ) ) )
+		return;
+
+	const char *pTempAppUser = NULL;
+	if ( pSteamInfo && (pTempAppUser = pSteamInfo->GetString( "SteamAppUser", NULL )) != NULL )
+	{
+		Q_strncpy( appUser, pTempAppUser, sizeof( appUser ) );
+	}
+	else
+	{
+		// They don't have SteamInfo.txt, or it's missing SteamAppUser. Try to figure out the user
+		// by looking in <steam install path>\config\SteamAppData.vdf.
+		char fullFilename[MAX_PATH];
+		Q_strncpy( fullFilename, steamInstallPath, sizeof( fullFilename ) );
+		Q_AppendSlash( fullFilename, sizeof( fullFilename ) );
+		Q_strncat( fullFilename, "config\\SteamAppData.vdf", sizeof( fullFilename ), COPY_ALL_CHARACTERS );
+
+		KeyValues *pSteamAppData = ReadKeyValuesFile( fullFilename );
+		if ( !pSteamAppData || (pTempAppUser = pSteamAppData->GetString( "AutoLoginUser", NULL )) == NULL )
+		{
+			Error( "Can't find steam app user info." );
+		}
+		Q_strncpy( appUser, pTempAppUser, sizeof( appUser ) ); 
+		
+		pSteamAppData->deleteThis();
+	}
+
+	Q_strlower( appUser );
+	steamEnvVars.m_SteamAppUser.SetValue( "%s", appUser );
+}
+
+void SetSteamUserPassphrase( KeyValues *pSteamInfo, CSteamEnvVars &steamEnvVars )
+{
+	// Always inherit the passphrase if it's already set, since it probably means we (or the
+	// the app that launched us) were launched from Steam.
+	char szPassPhrase[ MAX_PATH ];
+	if ( steamEnvVars.m_SteamUserPassphrase.GetValue( szPassPhrase, sizeof( szPassPhrase ) ) )
+		return;
+
+	// SteamUserPassphrase.
+	const char *pStr;
+	if ( pSteamInfo && (pStr = pSteamInfo->GetString( "SteamUserPassphrase", NULL )) != NULL )
+	{
+		steamEnvVars.m_SteamUserPassphrase.SetValue( "%s", pStr );
+	}
+}
+
+FSReturnCode_t SetupSteamStartupEnvironment( KeyValues *pFileSystemInfo, const char *pGameInfoDirectory, CSteamEnvVars &steamEnvVars )
+{
+	// Ok, we're going to run Steam. See if they have SteamInfo.txt. If not, we'll try to deduce what we can.
+	char steamInfoFile[MAX_PATH];
+	Q_strncpy( steamInfoFile, pGameInfoDirectory, sizeof( steamInfoFile ) );
+	Q_AppendSlash( steamInfoFile, sizeof( steamInfoFile ) );
+	Q_strncat( steamInfoFile, "steaminfo.txt", sizeof( steamInfoFile ), COPY_ALL_CHARACTERS );
+	KeyValues *pSteamInfo = ReadKeyValuesFile( steamInfoFile );
+
+	char steamInstallPath[MAX_PATH];
+	FSReturnCode_t ret = SetSteamInstallPath( steamInstallPath, sizeof( steamInstallPath ), steamEnvVars, false );
+	if ( ret != FS_OK )
+		return ret;
+
+	SetSteamAppUser( pSteamInfo, steamInstallPath, steamEnvVars );
+	SetSteamUserPassphrase( pSteamInfo, steamEnvVars );
+
+	if ( pSteamInfo )
+		pSteamInfo->deleteThis();
+
+	return FS_OK;
+}
+
+FSReturnCode_t FileSystem_SetBasePaths( IFileSystem *pFileSystem )
+{
+	pFileSystem->RemoveSearchPaths( "EXECUTABLE_PATH" );
+
+	char executablePath[MAX_PATH];
+	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) )	)
+		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );
+
+	pFileSystem->AddSearchPath( executablePath, "EXECUTABLE_PATH" );
+
+	if ( !FileSystem_GetBaseDir( executablePath, sizeof( executablePath ) )  )
+		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetBaseDir failed." );
+
+	pFileSystem->AddSearchPath( executablePath, "BASE_PATH" );
+
+	return FS_OK;
+}
+
+//-----------------------------------------------------------------------------
+// Returns the name of the file system DLL to use
+//-----------------------------------------------------------------------------
+FSReturnCode_t FileSystem_GetFileSystemDLLName( char *pFileSystemDLL, int nMaxLen, bool &bSteam )
+{
+	bSteam = false;
+
+	// Inside of here, we don't have a filesystem yet, so we have to assume that the filesystem_stdio or filesystem_steam
+	// is in this same directory with us.
+	char executablePath[MAX_PATH];
+	if ( !FileSystem_GetExecutableDir( executablePath, sizeof( executablePath ) )	)
+		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetExecutableDir failed." );
+
+	// Assume we'll use local files
+	Q_snprintf( pFileSystemDLL, nMaxLen, "%s%cfilesystem_stdio" DLL_EXT_STRING, executablePath, CORRECT_PATH_SEPARATOR );
+
+	#if !defined( _X360 )
+
+		// Use filsystem_steam if it exists?
+		#if defined( OSX ) || defined( LINUX )
+			struct stat statBuf;
+		#endif
+		if (
+			#if defined( OSX ) || defined( LINUX )
+				stat( pFileSystemDLL, &statBuf ) != 0
+			#else
+				_access( pFileSystemDLL, 0 ) != 0
+			#endif
+		) {
+			Q_snprintf( pFileSystemDLL, nMaxLen, "%s%cfilesystem_steam" DLL_EXT_STRING, executablePath, CORRECT_PATH_SEPARATOR );
+			bSteam = true;
+		}
+	#endif
+
+	return FS_OK;
+}
+
+//-----------------------------------------------------------------------------
+// Sets up the steam.dll install path in our PATH env var (so you can then just 
+// LoadLibrary() on filesystem_steam.dll without having to copy steam.dll anywhere special )
+//-----------------------------------------------------------------------------
+FSReturnCode_t FileSystem_SetupSteamInstallPath()
+{
+	CSteamEnvVars steamEnvVars;
+	char steamInstallPath[MAX_PATH];
+	FSReturnCode_t ret = SetSteamInstallPath( steamInstallPath, sizeof( steamInstallPath ), steamEnvVars, true );
+	steamEnvVars.m_Path.SetRestoreOriginalValue( false ); // We want to keep the change to the path going forward.
+	return ret;
+}
+
+//-----------------------------------------------------------------------------
+// Sets up the steam environment + gets back the gameinfo.txt path
+//-----------------------------------------------------------------------------
+FSReturnCode_t FileSystem_SetupSteamEnvironment( CFSSteamSetupInfo &fsInfo )
+{
+	// First, locate the directory with gameinfo.txt.
+	FSReturnCode_t ret = LocateGameInfoFile( fsInfo, fsInfo.m_GameInfoPath, sizeof( fsInfo.m_GameInfoPath ) );
+	if ( ret != FS_OK )
+		return ret;
+
+	// This is so that processes spawned by this application will have the same VPROJECT
+#ifdef WIN32
+	char pEnvBuf[MAX_PATH+32];
+	Q_snprintf( pEnvBuf, sizeof(pEnvBuf), "%s=%s", GAMEDIR_TOKEN, fsInfo.m_GameInfoPath );
+	_putenv( pEnvBuf );
+#else
+	setenv( GAMEDIR_TOKEN, fsInfo.m_GameInfoPath, 1 );
+#endif
+	
+	CSteamEnvVars steamEnvVars;
+	if ( fsInfo.m_bSteam )
+	{
+		if ( fsInfo.m_bToolsMode )
+		{
+			// Now, load gameinfo.txt (to make sure it's there)
+			KeyValues *pMainFile, *pFileSystemInfo, *pSearchPaths;
+			ret = LoadGameInfoFile( fsInfo.m_GameInfoPath, pMainFile, pFileSystemInfo, pSearchPaths );
+			if ( ret != FS_OK )
+				return ret;
+
+			// If filesystem_stdio.dll is missing or -steam is specified, then load filesystem_steam.dll.
+			// There are two command line parameters for Steam:
+			//		1) -steam (runs Steam in remote filesystem mode; requires Steam backend)
+			//		2) -steamlocal (runs Steam in local filesystem mode (all content off HDD)
+
+			// Setup all the environment variables related to Steam so filesystem_steam.dll knows how to initialize Steam.
+			ret = SetupSteamStartupEnvironment( pFileSystemInfo, fsInfo.m_GameInfoPath, steamEnvVars );
+			if ( ret != FS_OK )
+				return ret;
+
+			steamEnvVars.m_SteamAppId.SetRestoreOriginalValue( false ); // We want to keep the change to the path going forward.
+
+			// We're done with main file
+			pMainFile->deleteThis();
+		}
+		else if ( fsInfo.m_bSetSteamDLLPath )
+		{
+			// This is used by the engine to automatically set the path to their steam.dll when running the engine,
+			// so they can debug it without having to copy steam.dll up into their hl2.exe folder.
+			char steamInstallPath[MAX_PATH];
+			ret = SetSteamInstallPath( steamInstallPath, sizeof( steamInstallPath ), steamEnvVars, true );
+			steamEnvVars.m_Path.SetRestoreOriginalValue( false ); // We want to keep the change to the path going forward.
+		}
+	}
+
+	return FS_OK;
+}
+
+
+//-----------------------------------------------------------------------------
+// Loads the file system module
+//-----------------------------------------------------------------------------
+FSReturnCode_t FileSystem_LoadFileSystemModule( CFSLoadModuleInfo &fsInfo )
+{
+	// First, locate the directory with gameinfo.txt.
+	FSReturnCode_t ret = FileSystem_SetupSteamEnvironment( fsInfo );
+	if ( ret != FS_OK )
+		return ret;
+
+	// Now that the environment is setup, load the filesystem module.
+	if ( !Sys_LoadInterface(
+		fsInfo.m_pFileSystemDLLName,
+		FILESYSTEM_INTERFACE_VERSION,
+		&fsInfo.m_pModule,
+		(void**)&fsInfo.m_pFileSystem ) )
+	{
+		return SetupFileSystemError( false, FS_UNABLE_TO_INIT, "Can't load %s.", fsInfo.m_pFileSystemDLLName );
+	}
+
+	if ( !fsInfo.m_pFileSystem->Connect( fsInfo.m_ConnectFactory ) )
+		return SetupFileSystemError( false, FS_UNABLE_TO_INIT, "%s IFileSystem::Connect failed.", fsInfo.m_pFileSystemDLLName );
+
+	if ( fsInfo.m_pFileSystem->Init() != INIT_OK )
+		return SetupFileSystemError( false, FS_UNABLE_TO_INIT, "%s IFileSystem::Init failed.", fsInfo.m_pFileSystemDLLName );
+
+	return FS_OK;
+}
+
+
+//-----------------------------------------------------------------------------
+// Mounds a particular steam cache
+//-----------------------------------------------------------------------------
+FSReturnCode_t FileSystem_MountContent( CFSMountContentInfo &mountContentInfo )
+{
+	// This part is Steam-only.
+	if ( mountContentInfo.m_pFileSystem->IsSteam() )
+	{
+		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "Should not be using filesystem_steam anymore!" );
+
+//		// Find out the "extra app id". This is for tools, which want to mount a base app's filesystem
+//		// like HL2, then mount the SDK content (tools materials and models, etc) in addition.
+//		int nExtraAppId = -1;
+//		if ( mountContentInfo.m_bToolsMode )
+//		{
+//			// !FIXME! Here we need to mount the tools content (VPK's) in some way...?
+//		}
+//
+//		// Set our working directory temporarily so Steam can remember it.
+//		// This is what Steam strips off absolute filenames like c:\program files\valve\steam\steamapps\username\sourcesdk
+//		// to get to the relative part of the path.
+//		char baseDir[MAX_PATH], oldWorkingDir[MAX_PATH];
+//		if ( !FileSystem_GetBaseDir( baseDir, sizeof( baseDir ) ) )
+//			return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetBaseDir failed." );
+//
+//		Q_getwd( oldWorkingDir, sizeof( oldWorkingDir ) );
+//		_chdir( baseDir );
+//
+//		// Filesystem_tools needs to add dependencies in here beforehand.
+//		FilesystemMountRetval_t retVal = mountContentInfo.m_pFileSystem->MountSteamContent( nExtraAppId );
+//		
+//		_chdir( oldWorkingDir );
+//
+//		if ( retVal != FILESYSTEM_MOUNT_OK )
+//			return SetupFileSystemError( true, FS_UNABLE_TO_INIT, "Unable to mount Steam content in the file system" );
+	}
+
+	return FileSystem_SetBasePaths( mountContentInfo.m_pFileSystem );
+}
+
+void FileSystem_SetErrorMode( FSErrorMode_t errorMode )
+{
+	g_FileSystemErrorMode = errorMode;
+}
+
+void FileSystem_ClearSteamEnvVars()
+{
+	CSteamEnvVars envVars;
+
+	// Change the values and don't restore the originals.
+	envVars.m_SteamAppId.SetValue( "" );
+	envVars.m_SteamUserPassphrase.SetValue( "" );
+	envVars.m_SteamAppUser.SetValue( "" );
+	
+	envVars.SetRestoreOriginalValue_ALL( false );
+}
+
+//-----------------------------------------------------------------------------
+// Adds the platform folder to the search path.
+//-----------------------------------------------------------------------------
+void FileSystem_AddSearchPath_Platform( IFileSystem *pFileSystem, const char *szGameInfoPath )
+{
+	char platform[MAX_PATH];
+	Q_strncpy( platform, szGameInfoPath, MAX_PATH );
+	Q_StripTrailingSlash( platform );
+	Q_strncat( platform, "/../platform", MAX_PATH, MAX_PATH );
+
+	pFileSystem->AddSearchPath( platform, "PLATFORM" );
+}