Quake-III-Arena

cmdlib.c (20754B)

---

 /*
 ===========================================================================
 Copyright (C) 1999-2005 Id Software, Inc.
 
 This file is part of Quake III Arena source code.
 
 Quake III Arena source code is free software; you can redistribute it
 and/or modify it under the terms of the GNU General Public License as
 published by the Free Software Foundation; either version 2 of the License,
 or (at your option) any later version.
 
 Quake III Arena source code is distributed in the hope that it will be
 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with Foobar; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 ===========================================================================
 */
 // cmdlib.c
 
 #include "cmdlib.h"
 #include <sys/types.h>
 #include <sys/stat.h>
 
 #ifdef WIN32
 #include <direct.h>
 #include <windows.h>
 #endif
 
 #ifdef __linux
 #include <unistd.h>
 #endif
 
 #ifdef NeXT
 #include <libc.h>
 #endif
 
 #define	BASEDIRNAME	"quake"		// assumed to have a 2 or 3 following
 #define PATHSEPERATOR   '/'
 
 // set these before calling CheckParm
 int myargc;
 char **myargv;
 
 char		com_token[1024];
 qboolean	com_eof;
 
 qboolean		archive;
 char			archivedir[1024];
 
 
 /*
 ===================
 ExpandWildcards
 
 Mimic unix command line expansion
 ===================
 */
 #define	MAX_EX_ARGC	1024
 int		ex_argc;
 char	*ex_argv[MAX_EX_ARGC];
 #ifdef _WIN32
 #include "io.h"
 void ExpandWildcards( int *argc, char ***argv )
 {
 	struct _finddata_t fileinfo;
 	int		handle;
 	int		i;
 	char	filename[1024];
 	char	filebase[1024];
 	char	*path;
 
 	ex_argc = 0;
 	for (i=0 ; i<*argc ; i++)
 	{
 		path = (*argv)[i];
 		if ( path[0] == '-'
 			|| ( !strstr(path, "*") && !strstr(path, "?") ) )
 		{
 			ex_argv[ex_argc++] = path;
 			continue;
 		}
 
 		handle = _findfirst (path, &fileinfo);
 		if (handle == -1)
 			return;
 
 		ExtractFilePath (path, filebase);
 
 		do
 		{
 			sprintf (filename, "%s%s", filebase, fileinfo.name);
 			ex_argv[ex_argc++] = copystring (filename);
 		} while (_findnext( handle, &fileinfo ) != -1);
 
 		_findclose (handle);
 	}
 
 	*argc = ex_argc;
 	*argv = ex_argv;
 }
 #else
 void ExpandWildcards (int *argc, char ***argv)
 {
 }
 #endif
 
 #ifdef WIN_ERROR
 #include <windows.h>
 /*
 =================
 Error
 
 For abnormal program terminations in windowed apps
 =================
 */
 void Error( const char *error, ... )
 {
 	va_list argptr;
 	char	text[1024];
 	char	text2[1024];
 	int		err;
 
 	err = GetLastError ();
 
 	va_start (argptr,error);
 	vsprintf (text, error,argptr);
 	va_end (argptr);
 
 	sprintf (text2, "%s\nGetLastError() = %i", text, err);
     MessageBox(NULL, text2, "Error", 0 /* MB_OK */ );
 
 	exit (1);
 }
 
 #else
 /*
 =================
 Error
 
 For abnormal program terminations in console apps
 =================
 */
 void Error( const char *error, ...)
 {
 	va_list argptr;
 
 	_printf ("\n************ ERROR ************\n");
 
 	va_start (argptr,error);
 	vprintf (error,argptr);
 	va_end (argptr);
 	_printf ("\r\n");
 
 	exit (1);
 }
 #endif
 
 // only printf if in verbose mode
 qboolean verbose = qfalse;
 void qprintf( const char *format, ... ) {
 	va_list argptr;
 
 	if (!verbose)
 		return;
 
 	va_start (argptr,format);
 	vprintf (format,argptr);
 	va_end (argptr);
 
 }
 
 #ifdef WIN32
 HWND hwndOut = NULL;
 qboolean lookedForServer = qfalse;
 UINT wm_BroadcastCommand = -1;
 #endif
 
 void _printf( const char *format, ... ) {
 	va_list argptr;
   char text[4096];
 #ifdef WIN32
   ATOM a;
 #endif
 	va_start (argptr,format);
 	vsprintf (text, format, argptr);
 	va_end (argptr);
 
   printf(text);
 
 #ifdef WIN32
   if (!lookedForServer) {
     lookedForServer = qtrue;
     hwndOut = FindWindow(NULL, "Q3Map Process Server");
     if (hwndOut) {
       wm_BroadcastCommand = RegisterWindowMessage( "Q3MPS_BroadcastCommand" );
     }
   }
   if (hwndOut) {
     a = GlobalAddAtom(text);
     PostMessage(hwndOut, wm_BroadcastCommand, 0, (LPARAM)a);
   }
 #endif
 }
 
 
 /*
 
 qdir will hold the path up to the quake directory, including the slash
 
   f:\quake\
   /raid/quake/
 
 gamedir will hold qdir + the game directory (id1, id2, etc)
 
   */
 
 char		qdir[1024];
 char		gamedir[1024];
 char		writedir[1024];
 
 void SetQdirFromPath( const char *path )
 {
 	char	temp[1024];
 	const char	*c;
   const char *sep;
 	int		len, count;
 
 	if (!(path[0] == '/' || path[0] == '\\' || path[1] == ':'))
 	{	// path is partial
 		Q_getwd (temp);
 		strcat (temp, path);
 		path = temp;
 	}
 
 	// search for "quake2" in path
 
 	len = strlen(BASEDIRNAME);
 	for (c=path+strlen(path)-1 ; c != path ; c--)
 	{
 		int i;
 
 		if (!Q_strncasecmp (c, BASEDIRNAME, len))
 		{
       //
 			//strncpy (qdir, path, c+len+2-path);
       // the +2 assumes a 2 or 3 following quake which is not the
       // case with a retail install
       // so we need to add up how much to the next separator
       sep = c + len;
       count = 1;
       while (*sep && *sep != '/' && *sep != '\\')
       {
         sep++;
         count++;
       }
 			strncpy (qdir, path, c+len+count-path);
 			qprintf ("qdir: %s\n", qdir);
 			for ( i = 0; i < strlen( qdir ); i++ )
 			{
 				if ( qdir[i] == '\\' ) 
 					qdir[i] = '/';
 			}
 
 			c += len+count;
 			while (*c)
 			{
 				if (*c == '/' || *c == '\\')
 				{
 					strncpy (gamedir, path, c+1-path);
 
 					for ( i = 0; i < strlen( gamedir ); i++ )
 					{
 						if ( gamedir[i] == '\\' ) 
 							gamedir[i] = '/';
 					}
 
 					qprintf ("gamedir: %s\n", gamedir);
 
 					if ( !writedir[0] )
 						strcpy( writedir, gamedir );
 					else if ( writedir[strlen( writedir )-1] != '/' )
 					{
 						writedir[strlen( writedir )] = '/';
 						writedir[strlen( writedir )+1] = 0;
 					}
 
 					return;
 				}
 				c++;
 			}
 			Error ("No gamedir in %s", path);
 			return;
 		}
 	}
 	Error ("SetQdirFromPath: no '%s' in %s", BASEDIRNAME, path);
 }
 
 char *ExpandArg (const char *path)
 {
 	static char full[1024];
 
 	if (path[0] != '/' && path[0] != '\\' && path[1] != ':')
 	{
 		Q_getwd (full);
 		strcat (full, path);
 	}
 	else
 		strcpy (full, path);
 	return full;
 }
 
 char *ExpandPath (const char *path)
 {
 	static char full[1024];
 	if (!qdir)
 		Error ("ExpandPath called without qdir set");
 	if (path[0] == '/' || path[0] == '\\' || path[1] == ':') {
 		strcpy( full, path );
 		return full;
 	}
 	sprintf (full, "%s%s", qdir, path);
 	return full;
 }
 
 char *ExpandGamePath (const char *path)
 {
 	static char full[1024];
 	if (!qdir)
 		Error ("ExpandGamePath called without qdir set");
 	if (path[0] == '/' || path[0] == '\\' || path[1] == ':') {
 		strcpy( full, path );
 		return full;
 	}
 	sprintf (full, "%s%s", gamedir, path);
 	return full;
 }
 
 char *ExpandPathAndArchive (const char *path)
 {
 	char	*expanded;
 	char	archivename[1024];
 
 	expanded = ExpandPath (path);
 
 	if (archive)
 	{
 		sprintf (archivename, "%s/%s", archivedir, path);
 		QCopyFile (expanded, archivename);
 	}
 	return expanded;
 }
 
 
 char *copystring(const char *s)
 {
 	char	*b;
 	b = malloc(strlen(s)+1);
 	strcpy (b, s);
 	return b;
 }
 
 
 
 /*
 ================
 I_FloatTime
 ================
 */
 double I_FloatTime (void)
 {
 	time_t	t;
 	
 	time (&t);
 	
 	return t;
 #if 0
 // more precise, less portable
 	struct timeval tp;
 	struct timezone tzp;
 	static int		secbase;
 
 	gettimeofday(&tp, &tzp);
 	
 	if (!secbase)
 	{
 		secbase = tp.tv_sec;
 		return tp.tv_usec/1000000.0;
 	}
 	
 	return (tp.tv_sec - secbase) + tp.tv_usec/1000000.0;
 #endif
 }
 
 void Q_getwd (char *out)
 {
 	int i = 0;
 
 #ifdef WIN32
    _getcwd (out, 256);
    strcat (out, "\\");
 #else
    getcwd (out, 256);
    strcat (out, "/");
 #endif
 
    while ( out[i] != 0 )
    {
 	   if ( out[i] == '\\' )
 		   out[i] = '/';
 	   i++;
    }
 }
 
 
 void Q_mkdir (const char *path)
 {
 #ifdef WIN32
 	if (_mkdir (path) != -1)
 		return;
 #else
 	if (mkdir (path, 0777) != -1)
 		return;
 #endif
 	if (errno != EEXIST)
 		Error ("mkdir %s: %s",path, strerror(errno));
 }
 
 /*
 ============
 FileTime
 
 returns -1 if not present
 ============
 */
 int	FileTime (const char *path)
 {
 	struct	stat	buf;
 	
 	if (stat (path,&buf) == -1)
 		return -1;
 	
 	return buf.st_mtime;
 }
 
 
 
 /*
 ==============
 COM_Parse
 
 Parse a token out of a string
 ==============
 */
 char *COM_Parse (char *data)
 {
 	int		c;
 	int		len;
 	
 	len = 0;
 	com_token[0] = 0;
 	
 	if (!data)
 		return NULL;
 		
 // skip whitespace
 skipwhite:
 	while ( (c = *data) <= ' ')
 	{
 		if (c == 0)
 		{
 			com_eof = qtrue;
 			return NULL;			// end of file;
 		}
 		data++;
 	}
 	
 // skip // comments
 	if (c=='/' && data[1] == '/')
 	{
 		while (*data && *data != '\n')
 			data++;
 		goto skipwhite;
 	}
 	
 
 // handle quoted strings specially
 	if (c == '\"')
 	{
 		data++;
 		do
 		{
 			c = *data++;
 			if (c=='\"')
 			{
 				com_token[len] = 0;
 				return data;
 			}
 			com_token[len] = c;
 			len++;
 		} while (1);
 	}
 
 // parse single characters
 	if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
 	{
 		com_token[len] = c;
 		len++;
 		com_token[len] = 0;
 		return data+1;
 	}
 
 // parse a regular word
 	do
 	{
 		com_token[len] = c;
 		data++;
 		len++;
 		c = *data;
 	if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
 			break;
 	} while (c>32);
 	
 	com_token[len] = 0;
 	return data;
 }
 
 
 int Q_strncasecmp (const char *s1, const char *s2, int n)
 {
 	int		c1, c2;
 	
 	do
 	{
 		c1 = *s1++;
 		c2 = *s2++;
 
 		if (!n--)
 			return 0;		// strings are equal until end point
 		
 		if (c1 != c2)
 		{
 			if (c1 >= 'a' && c1 <= 'z')
 				c1 -= ('a' - 'A');
 			if (c2 >= 'a' && c2 <= 'z')
 				c2 -= ('a' - 'A');
 			if (c1 != c2)
 				return -1;		// strings not equal
 		}
 	} while (c1);
 	
 	return 0;		// strings are equal
 }
 
 int Q_stricmp (const char *s1, const char *s2)
 {
 	return Q_strncasecmp (s1, s2, 99999);
 }
 
 
 char *strupr (char *start)
 {
 	char	*in;
 	in = start;
 	while (*in)
 	{
 		*in = toupper(*in);
 		in++;
 	}
 	return start;
 }
 
 char *strlower (char *start)
 {
 	char	*in;
 	in = start;
 	while (*in)
 	{
 		*in = tolower(*in); 
 		in++;
 	}
 	return start;
 }
 
 
 /*
 =============================================================================
 
 						MISC FUNCTIONS
 
 =============================================================================
 */
 
 
 /*
 =================
 CheckParm
 
 Checks for the given parameter in the program's command line arguments
 Returns the argument number (1 to argc-1) or 0 if not present
 =================
 */
 int CheckParm (const char *check)
 {
 	int             i;
 
 	for (i = 1;i<myargc;i++)
 	{
 		if ( !Q_stricmp(check, myargv[i]) )
 			return i;
 	}
 
 	return 0;
 }
 
 
 
 /*
 ================
 Q_filelength
 ================
 */
 int Q_filelength (FILE *f)
 {
 	int		pos;
 	int		end;
 
 	pos = ftell (f);
 	fseek (f, 0, SEEK_END);
 	end = ftell (f);
 	fseek (f, pos, SEEK_SET);
 
 	return end;
 }
 
 
 FILE *SafeOpenWrite (const char *filename)
 {
 	FILE	*f;
 
 	f = fopen(filename, "wb");
 
 	if (!f)
 		Error ("Error opening %s: %s",filename,strerror(errno));
 
 	return f;
 }
 
 FILE *SafeOpenRead (const char *filename)
 {
 	FILE	*f;
 
 	f = fopen(filename, "rb");
 
 	if (!f)
 		Error ("Error opening %s: %s",filename,strerror(errno));
 
 	return f;
 }
 
 
 void SafeRead (FILE *f, void *buffer, int count)
 {
 	if ( fread (buffer, 1, count, f) != (size_t)count)
 		Error ("File read failure");
 }
 
 
 void SafeWrite (FILE *f, const void *buffer, int count)
 {
 	if (fwrite (buffer, 1, count, f) != (size_t)count)
 		Error ("File write failure");
 }
 
 
 /*
 ==============
 FileExists
 ==============
 */
 qboolean	FileExists (const char *filename)
 {
 	FILE	*f;
 
 	f = fopen (filename, "r");
 	if (!f)
 		return qfalse;
 	fclose (f);
 	return qtrue;
 }
 
 /*
 ==============
 LoadFile
 ==============
 */
 int    LoadFile( const char *filename, void **bufferptr )
 {
 	FILE	*f;
 	int    length;
 	void    *buffer;
 
 	f = SafeOpenRead (filename);
 	length = Q_filelength (f);
 	buffer = malloc (length+1);
 	((char *)buffer)[length] = 0;
 	SafeRead (f, buffer, length);
 	fclose (f);
 
 	*bufferptr = buffer;
 	return length;
 }
 
 
 /*
 ==============
 LoadFileBlock
 -
 rounds up memory allocation to 4K boundry
 -
 ==============
 */
 int    LoadFileBlock( const char *filename, void **bufferptr )
 {
 	FILE	*f;
 	int    length, nBlock, nAllocSize;
 	void    *buffer;
 
 	f = SafeOpenRead (filename);
 	length = Q_filelength (f);
   nAllocSize = length;
   nBlock = nAllocSize % MEM_BLOCKSIZE;
   if ( nBlock > 0) {
     nAllocSize += MEM_BLOCKSIZE - nBlock;
   }
 	buffer = malloc (nAllocSize+1);
   memset(buffer, 0, nAllocSize+1);
 	SafeRead (f, buffer, length);
 	fclose (f);
 
 	*bufferptr = buffer;
 	return length;
 }
 
 
 /*
 ==============
 TryLoadFile
 
 Allows failure
 ==============
 */
 int    TryLoadFile (const char *filename, void **bufferptr)
 {
 	FILE	*f;
 	int    length;
 	void    *buffer;
 
 	*bufferptr = NULL;
 
 	f = fopen (filename, "rb");
 	if (!f)
 		return -1;
 	length = Q_filelength (f);
 	buffer = malloc (length+1);
 	((char *)buffer)[length] = 0;
 	SafeRead (f, buffer, length);
 	fclose (f);
 
 	*bufferptr = buffer;
 	return length;
 }
 
 
 /*
 ==============
 SaveFile
 ==============
 */
 void    SaveFile (const char *filename, const void *buffer, int count)
 {
 	FILE	*f;
 
 	f = SafeOpenWrite (filename);
 	SafeWrite (f, buffer, count);
 	fclose (f);
 }
 
 
 
 void DefaultExtension (char *path, const char *extension)
 {
 	char    *src;
 //
 // if path doesnt have a .EXT, append extension
 // (extension should include the .)
 //
 	src = path + strlen(path) - 1;
 
 	while (*src != '/' && *src != '\\' && src != path)
 	{
 		if (*src == '.')
 			return;                 // it has an extension
 		src--;
 	}
 
 	strcat (path, extension);
 }
 
 
 void DefaultPath (char *path, const char *basepath)
 {
 	char    temp[128];
 
 	if (path[0] == PATHSEPERATOR)
 		return;                   // absolute path location
 	strcpy (temp,path);
 	strcpy (path,basepath);
 	strcat (path,temp);
 }
 
 
 void    StripFilename (char *path)
 {
 	int             length;
 
 	length = strlen(path)-1;
 	while (length > 0 && path[length] != PATHSEPERATOR)
 		length--;
 	path[length] = 0;
 }
 
 void    StripExtension (char *path)
 {
 	int             length;
 
 	length = strlen(path)-1;
 	while (length > 0 && path[length] != '.')
 	{
 		length--;
 		if (path[length] == '/')
 			return;		// no extension
 	}
 	if (length)
 		path[length] = 0;
 }
 
 
 /*
 ====================
 Extract file parts
 ====================
 */
 // FIXME: should include the slash, otherwise
 // backing to an empty path will be wrong when appending a slash
 void ExtractFilePath (const char *path, char *dest)
 {
 	const char    *src;
 
 	src = path + strlen(path) - 1;
 
 //
 // back up until a \ or the start
 //
 	while (src != path && *(src-1) != '\\' && *(src-1) != '/')
 		src--;
 
 	memcpy (dest, path, src-path);
 	dest[src-path] = 0;
 }
 
 void ExtractFileBase (const char *path, char *dest)
 {
 	const char    *src;
 
 	src = path + strlen(path) - 1;
 
 //
 // back up until a \ or the start
 //
 	while (src != path && *(src-1) != PATHSEPERATOR)
 		src--;
 
 	while (*src && *src != '.')
 	{
 		*dest++ = *src++;
 	}
 	*dest = 0;
 }
 
 void ExtractFileExtension (const char *path, char *dest)
 {
 	const char    *src;
 
 	src = path + strlen(path) - 1;
 
 //
 // back up until a . or the start
 //
 	while (src != path && *(src-1) != '.')
 		src--;
 	if (src == path)
 	{
 		*dest = 0;	// no extension
 		return;
 	}
 
 	strcpy (dest,src);
 }
 
 
 /*
 ==============
 ParseNum / ParseHex
 ==============
 */
 int ParseHex (const char *hex)
 {
 	const char    *str;
 	int    num;
 
 	num = 0;
 	str = hex;
 
 	while (*str)
 	{
 		num <<= 4;
 		if (*str >= '0' && *str <= '9')
 			num += *str-'0';
 		else if (*str >= 'a' && *str <= 'f')
 			num += 10 + *str-'a';
 		else if (*str >= 'A' && *str <= 'F')
 			num += 10 + *str-'A';
 		else
 			Error ("Bad hex number: %s",hex);
 		str++;
 	}
 
 	return num;
 }
 
 
 int ParseNum (const char *str)
 {
 	if (str[0] == '$')
 		return ParseHex (str+1);
 	if (str[0] == '0' && str[1] == 'x')
 		return ParseHex (str+2);
 	return atol (str);
 }
 
 
 
 /*
 ============================================================================
 
 					BYTE ORDER FUNCTIONS
 
 ============================================================================
 */
 
 #ifdef _SGI_SOURCE
 #define	__BIG_ENDIAN__
 #endif
 
 #ifdef __BIG_ENDIAN__
 
 short   LittleShort (short l)
 {
 	byte    b1,b2;
 
 	b1 = l&255;
 	b2 = (l>>8)&255;
 
 	return (b1<<8) + b2;
 }
 
 short   BigShort (short l)
 {
 	return l;
 }
 
 
 int    LittleLong (int l)
 {
 	byte    b1,b2,b3,b4;
 
 	b1 = l&255;
 	b2 = (l>>8)&255;
 	b3 = (l>>16)&255;
 	b4 = (l>>24)&255;
 
 	return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
 }
 
 int    BigLong (int l)
 {
 	return l;
 }
 
 
 float	LittleFloat (float l)
 {
 	union {byte b[4]; float f;} in, out;
 	
 	in.f = l;
 	out.b[0] = in.b[3];
 	out.b[1] = in.b[2];
 	out.b[2] = in.b[1];
 	out.b[3] = in.b[0];
 	
 	return out.f;
 }
 
 float	BigFloat (float l)
 {
 	return l;
 }
 
 
 #else
 
 
 short   BigShort (short l)
 {
 	byte    b1,b2;
 
 	b1 = l&255;
 	b2 = (l>>8)&255;
 
 	return (b1<<8) + b2;
 }
 
 short   LittleShort (short l)
 {
 	return l;
 }
 
 
 int    BigLong (int l)
 {
 	byte    b1,b2,b3,b4;
 
 	b1 = l&255;
 	b2 = (l>>8)&255;
 	b3 = (l>>16)&255;
 	b4 = (l>>24)&255;
 
 	return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
 }
 
 int    LittleLong (int l)
 {
 	return l;
 }
 
 float	BigFloat (float l)
 {
 	union {byte b[4]; float f;} in, out;
 	
 	in.f = l;
 	out.b[0] = in.b[3];
 	out.b[1] = in.b[2];
 	out.b[2] = in.b[1];
 	out.b[3] = in.b[0];
 	
 	return out.f;
 }
 
 float	LittleFloat (float l)
 {
 	return l;
 }
 
 
 #endif
 
 
 //=======================================================
 
 
 // FIXME: byte swap?
 
 // this is a 16 bit, non-reflected CRC using the polynomial 0x1021
 // and the initial and final xor values shown below...  in other words, the
 // CCITT standard CRC used by XMODEM
 
 #define CRC_INIT_VALUE	0xffff
 #define CRC_XOR_VALUE	0x0000
 
 static unsigned short crctable[256] =
 {
 	0x0000,	0x1021,	0x2042,	0x3063,	0x4084,	0x50a5,	0x60c6,	0x70e7,
 	0x8108,	0x9129,	0xa14a,	0xb16b,	0xc18c,	0xd1ad,	0xe1ce,	0xf1ef,
 	0x1231,	0x0210,	0x3273,	0x2252,	0x52b5,	0x4294,	0x72f7,	0x62d6,
 	0x9339,	0x8318,	0xb37b,	0xa35a,	0xd3bd,	0xc39c,	0xf3ff,	0xe3de,
 	0x2462,	0x3443,	0x0420,	0x1401,	0x64e6,	0x74c7,	0x44a4,	0x5485,
 	0xa56a,	0xb54b,	0x8528,	0x9509,	0xe5ee,	0xf5cf,	0xc5ac,	0xd58d,
 	0x3653,	0x2672,	0x1611,	0x0630,	0x76d7,	0x66f6,	0x5695,	0x46b4,
 	0xb75b,	0xa77a,	0x9719,	0x8738,	0xf7df,	0xe7fe,	0xd79d,	0xc7bc,
 	0x48c4,	0x58e5,	0x6886,	0x78a7,	0x0840,	0x1861,	0x2802,	0x3823,
 	0xc9cc,	0xd9ed,	0xe98e,	0xf9af,	0x8948,	0x9969,	0xa90a,	0xb92b,
 	0x5af5,	0x4ad4,	0x7ab7,	0x6a96,	0x1a71,	0x0a50,	0x3a33,	0x2a12,
 	0xdbfd,	0xcbdc,	0xfbbf,	0xeb9e,	0x9b79,	0x8b58,	0xbb3b,	0xab1a,
 	0x6ca6,	0x7c87,	0x4ce4,	0x5cc5,	0x2c22,	0x3c03,	0x0c60,	0x1c41,
 	0xedae,	0xfd8f,	0xcdec,	0xddcd,	0xad2a,	0xbd0b,	0x8d68,	0x9d49,
 	0x7e97,	0x6eb6,	0x5ed5,	0x4ef4,	0x3e13,	0x2e32,	0x1e51,	0x0e70,
 	0xff9f,	0xefbe,	0xdfdd,	0xcffc,	0xbf1b,	0xaf3a,	0x9f59,	0x8f78,
 	0x9188,	0x81a9,	0xb1ca,	0xa1eb,	0xd10c,	0xc12d,	0xf14e,	0xe16f,
 	0x1080,	0x00a1,	0x30c2,	0x20e3,	0x5004,	0x4025,	0x7046,	0x6067,
 	0x83b9,	0x9398,	0xa3fb,	0xb3da,	0xc33d,	0xd31c,	0xe37f,	0xf35e,
 	0x02b1,	0x1290,	0x22f3,	0x32d2,	0x4235,	0x5214,	0x6277,	0x7256,
 	0xb5ea,	0xa5cb,	0x95a8,	0x8589,	0xf56e,	0xe54f,	0xd52c,	0xc50d,
 	0x34e2,	0x24c3,	0x14a0,	0x0481,	0x7466,	0x6447,	0x5424,	0x4405,
 	0xa7db,	0xb7fa,	0x8799,	0x97b8,	0xe75f,	0xf77e,	0xc71d,	0xd73c,
 	0x26d3,	0x36f2,	0x0691,	0x16b0,	0x6657,	0x7676,	0x4615,	0x5634,
 	0xd94c,	0xc96d,	0xf90e,	0xe92f,	0x99c8,	0x89e9,	0xb98a,	0xa9ab,
 	0x5844,	0x4865,	0x7806,	0x6827,	0x18c0,	0x08e1,	0x3882,	0x28a3,
 	0xcb7d,	0xdb5c,	0xeb3f,	0xfb1e,	0x8bf9,	0x9bd8,	0xabbb,	0xbb9a,
 	0x4a75,	0x5a54,	0x6a37,	0x7a16,	0x0af1,	0x1ad0,	0x2ab3,	0x3a92,
 	0xfd2e,	0xed0f,	0xdd6c,	0xcd4d,	0xbdaa,	0xad8b,	0x9de8,	0x8dc9,
 	0x7c26,	0x6c07,	0x5c64,	0x4c45,	0x3ca2,	0x2c83,	0x1ce0,	0x0cc1,
 	0xef1f,	0xff3e,	0xcf5d,	0xdf7c,	0xaf9b,	0xbfba,	0x8fd9,	0x9ff8,
 	0x6e17,	0x7e36,	0x4e55,	0x5e74,	0x2e93,	0x3eb2,	0x0ed1,	0x1ef0
 };
 
 void CRC_Init(unsigned short *crcvalue)
 {
 	*crcvalue = CRC_INIT_VALUE;
 }
 
 void CRC_ProcessByte(unsigned short *crcvalue, byte data)
 {
 	*crcvalue = (*crcvalue << 8) ^ crctable[(*crcvalue >> 8) ^ data];
 }
 
 unsigned short CRC_Value(unsigned short crcvalue)
 {
 	return crcvalue ^ CRC_XOR_VALUE;
 }
 //=============================================================================
 
 /*
 ============
 CreatePath
 ============
 */
 void	CreatePath (const char *path)
 {
 	const char	*ofs;
 	char		c;
 	char		dir[1024];
 
 #ifdef _WIN32
 	int		olddrive = -1;
 
 	if ( path[1] == ':' )
 	{
 		olddrive = _getdrive();
 		_chdrive( toupper( path[0] ) - 'A' + 1 );
 	}
 #endif
 
 	if (path[1] == ':')
 		path += 2;
 
 	for (ofs = path+1 ; *ofs ; ofs++)
 	{
 		c = *ofs;
 		if (c == '/' || c == '\\')
 		{	// create the directory
 			memcpy( dir, path, ofs - path );
 			dir[ ofs - path ] = 0;
 			Q_mkdir( dir );
 		}
 	}
 
 #ifdef _WIN32
 	if ( olddrive != -1 )
 	{
 		_chdrive( olddrive );
 	}
 #endif
 }
 
 
 /*
 ============
 QCopyFile
 
   Used to archive source files
 ============
 */
 void QCopyFile (const char *from, const char *to)
 {
 	void	*buffer;
 	int		length;
 
 	length = LoadFile (from, &buffer);
 	CreatePath (to);
 	SaveFile (to, buffer, length);
 	free (buffer);
 }