tor-browser

pathtools_public.cpp (23356B)

---

//========= Copyright Valve Corporation ============//
#include "strtools_public.h"
#include "pathtools_public.h"

#if defined( _WIN32)
#include <windows.h>
#include <direct.h>
#include <shobjidl.h>
#include <knownfolders.h>
#include <shlobj.h>
#include <share.h>

#undef GetEnvironmentVariable
#else
#include <dlfcn.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <alloca.h>
#endif

#if defined OSX
#include <Foundation/Foundation.h>
#include <AppKit/AppKit.h>
#include <mach-o/dyld.h>
#define _S_IFDIR S_IFDIR     // really from tier0/platform.h which we dont have yet
#endif

#include <sys/stat.h>

#include <algorithm>

/** Returns the path (including filename) to the current executable */
std::string Path_GetExecutablePath()
{
#if defined( _WIN32 )
wchar_t *pwchPath = new wchar_t[MAX_UNICODE_PATH];
char *pchPath = new char[MAX_UNICODE_PATH_IN_UTF8];
::GetModuleFileNameW( NULL, pwchPath, MAX_UNICODE_PATH );
WideCharToMultiByte( CP_UTF8, 0, pwchPath, -1, pchPath, MAX_UNICODE_PATH_IN_UTF8, NULL, NULL );
delete[] pwchPath;

std::string sPath = pchPath;
delete[] pchPath;
return sPath;
#elif defined( OSX )
char rchPath[1024];
uint32_t nBuff = sizeof( rchPath );
bool bSuccess = _NSGetExecutablePath(rchPath, &nBuff) == 0;
rchPath[nBuff-1] = '\0';
if( bSuccess )
	return rchPath;
else
	return "";
#elif defined LINUX
char rchPath[1024];
size_t nBuff = sizeof( rchPath );
ssize_t nRead = readlink("/proc/self/exe", rchPath, nBuff-1 );
if ( nRead != -1 )
{
	rchPath[ nRead ] = 0;
	return rchPath;
}
else
{
	return "";
}
#else
AssertMsg( false, "Implement Plat_GetExecutablePath" );
return "";
#endif

}

/** Returns the path of the current working directory */
std::string Path_GetWorkingDirectory()
{
std::string sPath;
#if defined( _WIN32 )
wchar_t buf[MAX_UNICODE_PATH];
sPath = UTF16to8( _wgetcwd( buf, MAX_UNICODE_PATH ) );
#else
char buf[ 1024 ];
sPath = getcwd( buf, sizeof( buf ) );
#endif
return sPath;
}

/** Sets the path of the current working directory. Returns true if this was successful. */
bool Path_SetWorkingDirectory( const std::string & sPath )
{
bool bSuccess;
#if defined( _WIN32 )
std::wstring wsPath = UTF8to16( sPath.c_str() );
bSuccess = 0 == _wchdir( wsPath.c_str() );
#else
bSuccess = 0 == chdir( sPath.c_str() );
#endif
return bSuccess;
}

/** Gets the path to a temporary directory. */
std::string Path_GetTemporaryDirectory()
{
#if defined( _WIN32 )
wchar_t buf[MAX_UNICODE_PATH];
if ( GetTempPathW( MAX_UNICODE_PATH, buf ) == 0 )
	return Path_GetWorkingDirectory();
return UTF16to8( buf );
#else
const char *pchTmpDir = getenv( "TMPDIR" );
if ( pchTmpDir == NULL )
{
	return "";
}
return pchTmpDir;
#endif
}

/** Returns the specified path without its filename */
std::string Path_StripFilename( const std::string & sPath, char slash )
{
if( slash == 0 )
	slash = Path_GetSlash();

std::string::size_type n = sPath.find_last_of( slash );
if( n == std::string::npos )
	return sPath;
else
	return std::string( sPath.begin(), sPath.begin() + n );
}

/** returns just the filename from the provided full or relative path. */
std::string Path_StripDirectory( const std::string & sPath, char slash )
{
if( slash == 0 )
	slash = Path_GetSlash();

std::string::size_type n = sPath.find_last_of( slash );
if( n == std::string::npos )
	return sPath;
else
	return std::string( sPath.begin() + n + 1, sPath.end() );
}

/** returns just the filename with no extension of the provided filename. 
* If there is a path the path is left intact. */
std::string Path_StripExtension( const std::string & sPath )
{
for( std::string::const_reverse_iterator i = sPath.rbegin(); i != sPath.rend(); i++ )
{
	if( *i == '.' )
	{
		return std::string( sPath.begin(), i.base() - 1 );
	}

	// if we find a slash there is no extension
	if( *i == '\\' || *i == '/' )
		break;
}

// we didn't find an extension
return sPath;
}

/** returns just extension of the provided filename (if any). */
std::string Path_GetExtension( const std::string & sPath )
{
for ( std::string::const_reverse_iterator i = sPath.rbegin(); i != sPath.rend(); i++ )
{
	if ( *i == '.' )
	{
		return std::string( i.base(), sPath.end() );
	}

	// if we find a slash there is no extension
	if ( *i == '\\' || *i == '/' )
		break;
}

// we didn't find an extension
return "";
}

bool Path_IsAbsolute( const std::string & sPath )
{
if( sPath.empty() )
	return false;

#if defined( WIN32 )
if ( sPath.size() < 3 ) // must be c:\x or \\x at least
	return false;

if ( sPath[1] == ':' ) // drive letter plus slash, but must test both slash cases
{
	if ( sPath[2] == '\\' || sPath[2] == '/' )
		return true;
}
else if ( sPath[0] == '\\' && sPath[1] == '\\' ) // UNC path
	return true;
#else
if( sPath[0] == '\\' || sPath[0] == '/' ) // any leading slash
	return true;
#endif

return false;
}


/** Makes an absolute path from a relative path and a base path */
std::string Path_MakeAbsolute( const std::string & sRelativePath, const std::string & sBasePath )
{
if( Path_IsAbsolute( sRelativePath ) )
	return Path_Compact( sRelativePath );
else
{
	if( !Path_IsAbsolute( sBasePath ) )
		return "";

	std::string sCompacted = Path_Compact( Path_Join( sBasePath, sRelativePath ) );
	if( Path_IsAbsolute( sCompacted ) )
		return sCompacted;
	else
		return "";
}
}


/** Fixes the directory separators for the current platform */
std::string Path_FixSlashes( const std::string & sPath, char slash )
{
if( slash == 0 )
	slash = Path_GetSlash();

std::string sFixed = sPath;
for( std::string::iterator i = sFixed.begin(); i != sFixed.end(); i++ )
{
	if( *i == '/' || *i == '\\' )
		*i = slash;
}

return sFixed;
}


char Path_GetSlash()
{
#if defined(_WIN32)
return '\\';
#else
return '/';
#endif
}

/** Jams two paths together with the right kind of slash */
std::string Path_Join( const std::string & first, const std::string & second, char slash )
{
if( slash == 0 )
	slash = Path_GetSlash();

// only insert a slash if we don't already have one
std::string::size_type nLen = first.length();
if( !nLen )
	return second;
#if defined(_WIN32)
if( first.back() == '\\' || first.back() == '/' )
    nLen--;
#else
char last_char = first[first.length()-1];
if (last_char == '\\' || last_char == '/')
    nLen--;
#endif

return first.substr( 0, nLen ) + std::string( 1, slash ) + second;
}


std::string Path_Join( const std::string & first, const std::string & second, const std::string & third, char slash )
{
return Path_Join( Path_Join( first, second, slash ), third, slash );
}

std::string Path_Join( const std::string & first, const std::string & second, const std::string & third, const std::string &fourth, char slash )
{
return Path_Join( Path_Join( Path_Join( first, second, slash ), third, slash ), fourth, slash );
}

std::string Path_Join( 
const std::string & first, 
const std::string & second, 
const std::string & third, 
const std::string & fourth, 
const std::string & fifth, 
char slash )
{
return Path_Join( Path_Join( Path_Join( Path_Join( first, second, slash ), third, slash ), fourth, slash ), fifth, slash );
}


std::string Path_RemoveTrailingSlash( const std::string & sRawPath, char slash )
{
if ( slash == 0 )
	slash = Path_GetSlash();

std::string sPath = sRawPath;
std::string::size_type nCurrent = sRawPath.length();
if ( nCurrent == 0 )
	return sPath;

int nLastFound = -1;
nCurrent--;
while( nCurrent != 0 )
{
	if ( sRawPath[ nCurrent ] == slash )
	{
		nLastFound = (int)nCurrent;
		nCurrent--;
	}
	else
	{
		break;
	}
}
	
if ( nLastFound >= 0 )
{
	sPath.erase( nLastFound, std::string::npos );
}

return sPath;
}


/** Removes redundant <dir>/.. elements in the path. Returns an empty path if the 
* specified path has a broken number of directories for its number of ..s */
std::string Path_Compact( const std::string & sRawPath, char slash )
{
if( slash == 0 )
	slash = Path_GetSlash();

std::string sPath = Path_FixSlashes( sRawPath, slash );
std::string sSlashString( 1, slash );

// strip out all /./
for( std::string::size_type i = 0; (i + 3) < sPath.length();  )
{
	if( sPath[ i ] == slash && sPath[ i+1 ] == '.' && sPath[ i+2 ] == slash )
	{
		sPath.replace( i, 3, sSlashString );
	}
	else
	{
		++i;
	}
}


// get rid of trailing /. but leave the path separator
if( sPath.length() > 2 )
{
	std::string::size_type len = sPath.length();
	if( sPath[ len-1 ] == '.'  && sPath[ len-2 ] == slash )
	{
		sPath.pop_back();
		//Not sure why the following line of code was used for a while.  It causes problems with strlen.
		//sPath[len-1] = 0;  // for now, at least 
	}
}

// get rid of leading ./ 
if( sPath.length() > 2 )
{
	if( sPath[ 0 ] == '.'  && sPath[ 1 ] == slash )
	{
		sPath.replace( 0, 2, "" );
	}
}

// each time we encounter .. back up until we've found the previous directory name
// then get rid of both
std::string::size_type i = 0;
while( i < sPath.length() )
{
	if( i > 0 && sPath.length() - i >= 2 
		&& sPath[i] == '.'
		&& sPath[i+1] == '.'
		&& ( i + 2 == sPath.length() || sPath[ i+2 ] == slash )
		&& sPath[ i-1 ] == slash )
	{
		// check if we've hit the start of the string and have a bogus path
		if( i == 1 )
			return "";
		
		// find the separator before i-1
		std::string::size_type iDirStart = i-2;
		while( iDirStart > 0 && sPath[ iDirStart - 1 ] != slash )
			--iDirStart;

		// remove everything from iDirStart to i+2
		sPath.replace( iDirStart, (i - iDirStart) + 3, "" );

		// start over
		i = 0;
	}
	else
	{
		++i;
	}
}

return sPath;
}


/** Returns true if these two paths are the same without respect for internal . or ..
* sequences, slash type, or case (on case-insensitive platforms). */
bool Path_IsSamePath( const std::string & sPath1, const std::string & sPath2 )
{
std::string sCompact1 = Path_Compact( sPath1 );
std::string sCompact2 = Path_Compact( sPath2 );
#if defined(WIN32)
return !stricmp( sCompact1.c_str(), sCompact2.c_str() );
#else
return !strcmp( sCompact1.c_str(), sCompact2.c_str() );
#endif
}


/** Returns the path to the current DLL or exe */
std::string Path_GetThisModulePath()
{
// gets the path of vrclient.dll itself
#ifdef WIN32
HMODULE hmodule = NULL;

::GetModuleHandleEx( GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, reinterpret_cast<LPCTSTR>(Path_GetThisModulePath), &hmodule );

wchar_t *pwchPath = new wchar_t[MAX_UNICODE_PATH];
char *pchPath = new char[ MAX_UNICODE_PATH_IN_UTF8 ];
::GetModuleFileNameW( hmodule, pwchPath, MAX_UNICODE_PATH );
WideCharToMultiByte( CP_UTF8, 0, pwchPath, -1, pchPath, MAX_UNICODE_PATH_IN_UTF8, NULL, NULL );
delete[] pwchPath;

std::string sPath = pchPath;
delete [] pchPath;
return sPath;

#elif defined( OSX ) || defined( LINUX )
// get the addr of a function in vrclient.so and then ask the dlopen system about it
Dl_info info;
dladdr( (void *)Path_GetThisModulePath, &info );
return info.dli_fname;
#endif

}


/** returns true if the specified path exists and is a directory */
bool Path_IsDirectory( const std::string & sPath )
{
std::string sFixedPath = Path_FixSlashes( sPath );
if( sFixedPath.empty() )
	return false;
char cLast = sFixedPath[ sFixedPath.length() - 1 ];
if( cLast == '/' || cLast == '\\' )
	sFixedPath.erase( sFixedPath.end() - 1, sFixedPath.end() );

// see if the specified path actually exists.

#if defined(POSIX)
struct	stat	buf;
if ( stat( sFixedPath.c_str(), &buf ) == -1 )
{
	return false;
}

#if defined( LINUX ) || defined( OSX )
return S_ISDIR( buf.st_mode );
#else
return (buf.st_mode & _S_IFDIR) != 0;
#endif

#else
struct	_stat	buf;
std::wstring wsFixedPath = UTF8to16( sFixedPath.c_str() );
if ( _wstat( wsFixedPath.c_str(), &buf ) == -1 )
{
	return false;
}

return (buf.st_mode & _S_IFDIR) != 0;
#endif
}

/** returns true if the specified path represents an app bundle */
bool Path_IsAppBundle( const std::string & sPath )
{
#if defined(OSX)
@autoreleasepool {
	NSBundle *bundle = [ NSBundle bundleWithPath: [ NSString stringWithUTF8String:sPath.c_str() ] ];
	bool bisAppBundle = ( nullptr != bundle );
	return bisAppBundle;
}
#else
return false;
#endif
}

//-----------------------------------------------------------------------------
// Purpose: returns true if the the path exists
//-----------------------------------------------------------------------------
bool Path_Exists( const std::string & sPath )
{
std::string sFixedPath = Path_FixSlashes( sPath );
if( sFixedPath.empty() )
	return false;

#if defined( WIN32 )
struct	_stat	buf;
std::wstring wsFixedPath = UTF8to16( sFixedPath.c_str() );
if ( _wstat( wsFixedPath.c_str(), &buf ) == -1 )
{
	return false;
}
#else
struct stat buf;
if ( stat ( sFixedPath.c_str(), &buf ) == -1)
{
	return false;
}
#endif

return true;
}


//-----------------------------------------------------------------------------
// Purpose: helper to find a directory upstream from a given path
//-----------------------------------------------------------------------------
std::string Path_FindParentDirectoryRecursively( const std::string &strStartDirectory, const std::string &strDirectoryName )
{
std::string strFoundPath = "";
std::string strCurrentPath = Path_FixSlashes( strStartDirectory );
if ( strCurrentPath.length() == 0 )
	return "";

bool bExists = Path_Exists( strCurrentPath );
std::string strCurrentDirectoryName = Path_StripDirectory( strCurrentPath );
if ( bExists && stricmp( strCurrentDirectoryName.c_str(), strDirectoryName.c_str() ) == 0 )
	return strCurrentPath;

while( bExists && strCurrentPath.length() != 0 )
{
	strCurrentPath = Path_StripFilename( strCurrentPath );
	strCurrentDirectoryName = Path_StripDirectory( strCurrentPath );
	bExists = Path_Exists( strCurrentPath );
	if ( bExists && stricmp( strCurrentDirectoryName.c_str(), strDirectoryName.c_str() ) == 0 )
		return strCurrentPath;
}

return "";
}


//-----------------------------------------------------------------------------
// Purpose: helper to find a subdirectory upstream from a given path
//-----------------------------------------------------------------------------
std::string Path_FindParentSubDirectoryRecursively( const std::string &strStartDirectory, const std::string &strDirectoryName )
{
std::string strFoundPath = "";
std::string strCurrentPath = Path_FixSlashes( strStartDirectory );
if ( strCurrentPath.length() == 0 )
	return "";

bool bExists = Path_Exists( strCurrentPath );
while( bExists && strCurrentPath.length() != 0 )
{
	strCurrentPath = Path_StripFilename( strCurrentPath );
	bExists = Path_Exists( strCurrentPath );

	if( Path_Exists( Path_Join( strCurrentPath, strDirectoryName ) ) )
	{
		strFoundPath = Path_Join( strCurrentPath, strDirectoryName );
		break;
	}
}
return strFoundPath;
}


//-----------------------------------------------------------------------------
// Purpose: reading and writing files in the vortex directory
//-----------------------------------------------------------------------------
unsigned char * Path_ReadBinaryFile( const std::string &strFilename, int *pSize )
{
FILE *f;
#if defined( POSIX )
f = fopen( strFilename.c_str(), "rb" );
#else
std::wstring wstrFilename = UTF8to16( strFilename.c_str() );
// the open operation needs to be sharable, therefore use of _wfsopen instead of _wfopen_s
f = _wfsopen( wstrFilename.c_str(), L"rb", _SH_DENYNO );
#endif

unsigned char* buf = NULL;

if ( f != NULL )
{
	fseek(f, 0, SEEK_END);
	int size = ftell(f);
	fseek(f, 0, SEEK_SET);

	buf = new unsigned char[size];
	if (buf && fread(buf, size, 1, f) == 1)
	{
		if (pSize)
			*pSize = size;
	}
	else
	{
		delete[] buf;
		buf = 0;
	}

	fclose(f);
}

return buf;
}

uint32_t  Path_ReadBinaryFile( const std::string &strFilename, unsigned char *pBuffer, uint32_t unSize )
{
FILE *f;
#if defined( POSIX )
f = fopen( strFilename.c_str(), "rb" );
#else
std::wstring wstrFilename = UTF8to16( strFilename.c_str() );
errno_t err = _wfopen_s( &f, wstrFilename.c_str(), L"rb" );
if ( err != 0 )
{
	f = NULL;
}
#endif

uint32_t unSizeToReturn = 0;

if ( f != NULL )
{
	fseek( f, 0, SEEK_END );
	uint32_t size = (uint32_t)ftell( f );
	fseek( f, 0, SEEK_SET );

	if ( size > unSize || !pBuffer )
	{
		unSizeToReturn = (uint32_t)size;
	}
	else
	{
		if ( fread( pBuffer, size, 1, f ) == 1 )
		{
			unSizeToReturn = (uint32_t)size;
		}
	}

	fclose( f );
}

return unSizeToReturn;
}

bool Path_WriteBinaryFile(const std::string &strFilename, unsigned char *pData, unsigned nSize)
{
FILE *f;
#if defined( POSIX )
f = fopen(strFilename.c_str(), "wb");
#else
std::wstring wstrFilename = UTF8to16( strFilename.c_str() );
errno_t err = _wfopen_s( &f, wstrFilename.c_str(), L"wb" );
if (err != 0)
{
	f = NULL;
}
#endif

size_t written = 0;
if (f != NULL) {
	written = fwrite(pData, sizeof(unsigned char), nSize, f);
	fclose(f);
}

return written == nSize ? true : false;
}

std::string Path_ReadTextFile( const std::string &strFilename )
{
// doing it this way seems backwards, but I don't
// see an easy way to do this with C/C++ style IO
// that isn't worse...
int size;
unsigned char* buf = Path_ReadBinaryFile( strFilename, &size );
if (!buf)
	return "";

// convert CRLF -> LF
size_t outsize = 1;
for (int i=1; i < size; i++)
{
	if (buf[i] == '\n' && buf[i-1] == '\r') // CRLF
		buf[outsize-1] = '\n'; // ->LF
	else
		buf[outsize++] = buf[i]; // just copy
}

std::string ret((char *)buf, outsize);
delete[] buf;
return ret;
}


bool Path_MakeWritable( const std::string &strFilename )
{
#if defined ( _WIN32 )
std::wstring wstrFilename = UTF8to16( strFilename.c_str() );

DWORD dwAttrs = GetFileAttributesW( wstrFilename.c_str() );
if ( dwAttrs != INVALID_FILE_ATTRIBUTES && ( dwAttrs & FILE_ATTRIBUTE_READONLY ) )
{
	return SetFileAttributesW( wstrFilename.c_str(), dwAttrs & ~FILE_ATTRIBUTE_READONLY );
}
#else
struct stat sb;

if ( stat( strFilename.c_str(), &sb ) == 0 && !( sb.st_mode & S_IWUSR ) )
{
	return ( chmod( strFilename.c_str(), sb.st_mode | S_IWUSR ) == 0 );
}
#endif

return true;
}

bool Path_WriteStringToTextFile( const std::string &strFilename, const char *pchData )
{
FILE *f;
#if defined( POSIX )
f = fopen( strFilename.c_str(), "w" );
#else
std::wstring wstrFilename = UTF8to16( strFilename.c_str() );
errno_t err = _wfopen_s( &f, wstrFilename.c_str(), L"w" );
if ( err != 0 )
{
	f = NULL;
}
#endif

bool ok = false;

if ( f != NULL )
{
	ok = fputs( pchData, f) >= 0;
	fclose(f);
}

return ok;
}

bool Path_WriteStringToTextFileAtomic( const std::string &strFilename, const char *pchData )
{
std::string strTmpFilename = strFilename + ".tmp";

if ( !Path_WriteStringToTextFile( strTmpFilename, pchData ) )
	return false;

// Platform specific atomic file replacement
#if defined( _WIN32 )
std::wstring wsFilename = UTF8to16( strFilename.c_str() );
std::wstring wsTmpFilename = UTF8to16( strTmpFilename.c_str() );
if ( !::ReplaceFileW( wsFilename.c_str(), wsTmpFilename.c_str(), nullptr, 0, 0, 0 ) )
{
	// if we couldn't ReplaceFile, try a non-atomic write as a fallback
	if ( !Path_WriteStringToTextFile( strFilename, pchData ) )
		return false;
}
#elif defined( POSIX )
if ( rename( strTmpFilename.c_str(), strFilename.c_str() ) == -1 )
	return false;
#else
#error Do not know how to write atomic file
#endif

return true;
}


#if defined(WIN32)
#define FILE_URL_PREFIX "file:///"
#else
#define FILE_URL_PREFIX "file://"
#endif

// Mozilla: see mozilla.patch for more details
// ----------------------------------------------------------------------------------------------------------------------------
// Purpose: Turns a path to a file on disk into a URL (or just returns the value if it's already a URL)
// ----------------------------------------------------------------------------------------------------------------------------
// std::string Path_FilePathToUrl( const std::string & sRelativePath, const std::string & sBasePath )
// {
// 	if ( StringHasPrefix( sRelativePath, "http://" )
// 		|| StringHasPrefix( sRelativePath, "https://" )
// 		|| StringHasPrefix( sRelativePath, "vr-input-workshop://" )
// 		|| StringHasPrefix( sRelativePath, "file://" )
// 	   )
// 	{
// 		return sRelativePath;
// 	}
// 	else
// 	{
// 		std::string sAbsolute = Path_MakeAbsolute( sRelativePath, sBasePath );
// 		if ( sAbsolute.empty() )
// 			return sAbsolute;
// 		sAbsolute = Path_FixSlashes( sAbsolute, '/' );

// 		size_t unBufferSize = sAbsolute.length() * 3;
// 		char *pchBuffer = (char *)alloca( unBufferSize );
// 		V_URLEncodeFullPath( pchBuffer, (int)unBufferSize, sAbsolute.c_str(), (int)sAbsolute.length() );

// 		return std::string( FILE_URL_PREFIX ) + pchBuffer;
// 	}
// }

// Mozilla: see mozilla.patch for more details
// -----------------------------------------------------------------------------------------------------
// Purpose: Strips off file:// off a URL and returns the path. For other kinds of URLs an empty string is returned
// -----------------------------------------------------------------------------------------------------
// std::string Path_UrlToFilePath( const std::string & sFileUrl )
// {
// 	if ( !strnicmp( sFileUrl.c_str(), FILE_URL_PREFIX, strlen( FILE_URL_PREFIX ) ) )
// 	{
// 		char *pchBuffer = (char *)alloca( sFileUrl.length() );
// 		V_URLDecodeNoPlusForSpace( pchBuffer, (int)sFileUrl.length(), 
// 			sFileUrl.c_str() + strlen( FILE_URL_PREFIX ), (int)( sFileUrl.length() - strlen( FILE_URL_PREFIX ) ) );

// 		return Path_FixSlashes( pchBuffer );
// 	}
// 	else
// 	{
// 		return "";
// 	}
// }


// -----------------------------------------------------------------------------------------------------
// Purpose: Returns the root of the directory the system wants us to store user documents in
// -----------------------------------------------------------------------------------------------------
std::string GetUserDocumentsPath()
{
#if defined( WIN32 )
WCHAR rwchPath[MAX_PATH];

if ( !SUCCEEDED( SHGetFolderPathW( NULL, CSIDL_MYDOCUMENTS | CSIDL_FLAG_CREATE, NULL, 0, rwchPath ) ) )
{
	return "";
}

// Convert the path to UTF-8 and store in the output
std::string sUserPath = UTF16to8( rwchPath );

return sUserPath;
#elif defined( OSX )
@autoreleasepool {
	NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask, YES );
	if ( [paths count] == 0 )
	{
		return "";
	}
	
	return [[paths objectAtIndex:0] UTF8String];
}
#elif defined( LINUX )
// @todo: not solved/changed as part of OSX - still not real - just removed old class based steam cut and paste
const char *pchHome = getenv( "HOME" );
if ( pchHome == NULL )
{
	return "";
}
return pchHome;
#endif
}


// -----------------------------------------------------------------------------------------------------
// Purpose: deletes / unlinks a single file
// -----------------------------------------------------------------------------------------------------
bool Path_UnlinkFile( const std::string &strFilename )
{
#if defined( WIN32 )
std::wstring wsFilename = UTF8to16( strFilename.c_str() );
return ( 0 != DeleteFileW( wsFilename.c_str() ) );
#else
return ( 0 == unlink( strFilename.c_str() ) );
#endif
}