mirror of
https://github.com/ioquake/ioq3.git
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1230 lines
20 KiB
C
Executable file
1230 lines
20 KiB
C
Executable file
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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// cmdlib.c
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#include "l_cmd.h"
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#include "l_log.h"
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#include "l_mem.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifndef SIN
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#define SIN
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#endif //SIN
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#if defined(WIN32) || defined(_WIN32)
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#include <direct.h>
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#else
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#include <unistd.h>
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#endif
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#ifdef NeXT
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#include <libc.h>
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#endif
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#define BASEDIRNAME "quake2"
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#define PATHSEPERATOR '/'
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// set these before calling CheckParm
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int myargc;
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char **myargv;
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char com_token[1024];
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qboolean com_eof;
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qboolean archive;
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char archivedir[1024];
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/*
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===================
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ExpandWildcards
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Mimic unix command line expansion
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===================
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*/
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#define MAX_EX_ARGC 1024
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int ex_argc;
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char *ex_argv[MAX_EX_ARGC];
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#ifdef _WIN32
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#include "io.h"
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void ExpandWildcards (int *argc, char ***argv)
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{
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struct _finddata_t fileinfo;
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int handle;
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int i;
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char filename[1024];
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char filebase[1024];
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char *path;
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ex_argc = 0;
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for (i=0 ; i<*argc ; i++)
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{
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path = (*argv)[i];
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if ( path[0] == '-'
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|| ( !strstr(path, "*") && !strstr(path, "?") ) )
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{
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ex_argv[ex_argc++] = path;
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continue;
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}
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handle = _findfirst (path, &fileinfo);
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if (handle == -1)
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return;
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ExtractFilePath (path, filebase);
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do
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{
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sprintf (filename, "%s%s", filebase, fileinfo.name);
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ex_argv[ex_argc++] = copystring (filename);
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} while (_findnext( handle, &fileinfo ) != -1);
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_findclose (handle);
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}
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*argc = ex_argc;
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*argv = ex_argv;
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}
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#else
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void ExpandWildcards (int *argc, char ***argv)
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{
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}
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#endif
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#ifdef WINBSPC
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#include <windows.h>
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HWND program_hwnd;
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void SetProgramHandle(HWND hwnd)
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{
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program_hwnd = hwnd;
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} //end of the function SetProgramHandle
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/*
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=================
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Error
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For abnormal program terminations in windowed apps
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=================
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*/
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void Error (char *error, ...)
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{
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va_list argptr;
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char text[1024];
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char text2[1024];
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int err;
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err = GetLastError ();
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va_start(argptr, error);
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vsprintf(text, error, argptr);
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va_end(argptr);
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sprintf(text2, "%s\nGetLastError() = %i", text, err);
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MessageBox(program_hwnd, text2, "Error", 0 /* MB_OK */ );
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Log_Write(text);
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Log_Close();
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exit(1);
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} //end of the function Error
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void Warning(char *szFormat, ...)
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{
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char szBuffer[256];
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va_list argptr;
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va_start (argptr, szFormat);
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vsprintf(szBuffer, szFormat, argptr);
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va_end (argptr);
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MessageBox(program_hwnd, szBuffer, "Warning", MB_OK);
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Log_Write(szBuffer);
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} //end of the function Warning
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#else
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/*
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=================
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Error
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For abnormal program terminations in console apps
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=================
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*/
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void Error (char *error, ...)
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{
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va_list argptr;
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char text[1024];
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va_start(argptr, error);
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vsprintf(text, error, argptr);
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va_end(argptr);
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printf("ERROR: %s\n", text);
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Log_Write(text);
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Log_Close();
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exit (1);
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} //end of the function Error
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void Warning(char *warning, ...)
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{
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va_list argptr;
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char text[1024];
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va_start(argptr, warning);
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vsprintf(text, warning, argptr);
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va_end(argptr);
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printf("WARNING: %s\n", text);
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Log_Write(text);
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} //end of the function Warning
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#endif
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//only printf if in verbose mode
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qboolean verbose = true;
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void qprintf(char *format, ...)
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{
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va_list argptr;
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#ifdef WINBSPC
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char buf[2048];
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#endif //WINBSPC
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if (!verbose)
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return;
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va_start(argptr,format);
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#ifdef WINBSPC
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vsprintf(buf, format, argptr);
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WinBSPCPrint(buf);
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#else
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vprintf(format, argptr);
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#endif //WINBSPC
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va_end(argptr);
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} //end of the function qprintf
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void Com_Error(int level, char *error, ...)
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{
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va_list argptr;
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char text[1024];
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va_start(argptr, error);
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vsprintf(text, error, argptr);
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va_end(argptr);
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Error(text);
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} //end of the funcion Com_Error
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void Com_Printf( const char *fmt, ... )
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{
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va_list argptr;
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char text[1024];
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va_start(argptr, fmt);
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vsprintf(text, fmt, argptr);
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va_end(argptr);
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Log_Print(text);
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} //end of the funcion Com_Printf
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/*
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qdir will hold the path up to the quake directory, including the slash
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f:\quake\
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/raid/quake/
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gamedir will hold qdir + the game directory (id1, id2, etc)
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*/
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char qdir[1024];
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char gamedir[1024];
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void SetQdirFromPath (char *path)
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{
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char temp[1024];
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char *c;
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int len;
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if (!(path[0] == '/' || path[0] == '\\' || path[1] == ':'))
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{ // path is partial
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Q_getwd (temp);
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strcat (temp, path);
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path = temp;
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}
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// search for "quake2" in path
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len = strlen(BASEDIRNAME);
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for (c=path+strlen(path)-1 ; c != path ; c--)
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if (!Q_strncasecmp (c, BASEDIRNAME, len))
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{
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strncpy (qdir, path, c+len+1-path);
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qprintf ("qdir: %s\n", qdir);
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c += len+1;
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while (*c)
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{
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if (*c == '/' || *c == '\\')
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{
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strncpy (gamedir, path, c+1-path);
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qprintf ("gamedir: %s\n", gamedir);
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return;
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}
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c++;
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}
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Error ("No gamedir in %s", path);
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return;
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}
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Error ("SetQdirFromPath: no '%s' in %s", BASEDIRNAME, path);
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}
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char *ExpandArg (char *path)
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{
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static char full[1024];
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if (path[0] != '/' && path[0] != '\\' && path[1] != ':')
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{
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Q_getwd (full);
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strcat (full, path);
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}
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else
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strcpy (full, path);
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return full;
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}
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char *ExpandPath (char *path)
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{
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static char full[1024];
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if (!qdir)
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Error ("ExpandPath called without qdir set");
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if (path[0] == '/' || path[0] == '\\' || path[1] == ':')
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return path;
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sprintf (full, "%s%s", qdir, path);
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return full;
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}
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char *ExpandPathAndArchive (char *path)
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{
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char *expanded;
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char archivename[1024];
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expanded = ExpandPath (path);
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if (archive)
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{
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sprintf (archivename, "%s/%s", archivedir, path);
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QCopyFile (expanded, archivename);
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}
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return expanded;
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}
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char *copystring(char *s)
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{
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char *b;
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b = GetMemory(strlen(s)+1);
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strcpy (b, s);
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return b;
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}
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/*
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================
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I_FloatTime
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================
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*/
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double I_FloatTime (void)
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{
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time_t t;
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time (&t);
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return t;
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#if 0
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// more precise, less portable
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struct timeval tp;
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struct timezone tzp;
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static int secbase;
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gettimeofday(&tp, &tzp);
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if (!secbase)
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{
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secbase = tp.tv_sec;
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return tp.tv_usec/1000000.0;
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}
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return (tp.tv_sec - secbase) + tp.tv_usec/1000000.0;
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#endif
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}
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void Q_getwd (char *out)
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{
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#if defined(WIN32) || defined(_WIN32)
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getcwd (out, 256);
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strcat (out, "\\");
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#else
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getwd(out);
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strcat(out, "/");
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#endif
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}
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void Q_mkdir (char *path)
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{
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#ifdef WIN32
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if (_mkdir (path) != -1)
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return;
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#else
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if (mkdir (path, 0777) != -1)
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return;
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#endif
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if (errno != EEXIST)
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Error ("mkdir %s: %s",path, strerror(errno));
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}
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/*
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============
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FileTime
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returns -1 if not present
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============
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*/
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int FileTime (char *path)
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{
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struct stat buf;
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if (stat (path,&buf) == -1)
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return -1;
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return buf.st_mtime;
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}
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|
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/*
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==============
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COM_Parse
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Parse a token out of a string
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==============
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*/
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char *COM_Parse (char *data)
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{
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int c;
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int len;
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len = 0;
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com_token[0] = 0;
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if (!data)
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return NULL;
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// skip whitespace
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skipwhite:
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while ( (c = *data) <= ' ')
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{
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if (c == 0)
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{
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com_eof = true;
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return NULL; // end of file;
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}
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data++;
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}
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// skip // comments
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if (c=='/' && data[1] == '/')
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{
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while (*data && *data != '\n')
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data++;
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goto skipwhite;
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}
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// handle quoted strings specially
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if (c == '\"')
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{
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data++;
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do
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{
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c = *data++;
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if (c=='\"')
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{
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com_token[len] = 0;
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return data;
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}
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com_token[len] = c;
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len++;
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} while (1);
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}
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// parse single characters
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if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
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{
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com_token[len] = c;
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len++;
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com_token[len] = 0;
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return data+1;
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}
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// parse a regular word
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do
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{
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com_token[len] = c;
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data++;
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len++;
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c = *data;
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if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':')
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break;
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} while (c>32);
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com_token[len] = 0;
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return data;
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}
|
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|
|
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int Q_strncasecmp (char *s1, char *s2, int n)
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{
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int c1, c2;
|
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do
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{
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c1 = *s1++;
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c2 = *s2++;
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if (!n--)
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return 0; // strings are equal until end point
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if (c1 != c2)
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{
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if (c1 >= 'a' && c1 <= 'z')
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c1 -= ('a' - 'A');
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if (c2 >= 'a' && c2 <= 'z')
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c2 -= ('a' - 'A');
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if (c1 != c2)
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return -1; // strings not equal
|
|
}
|
|
} while (c1);
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return 0; // strings are equal
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}
|
|
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int Q_strcasecmp (char *s1, char *s2)
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{
|
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return Q_strncasecmp (s1, s2, 99999);
|
|
}
|
|
|
|
int Q_stricmp (char *s1, char *s2)
|
|
{
|
|
return Q_strncasecmp (s1, s2, 99999);
|
|
}
|
|
|
|
void Q_strncpyz( char *dest, const char *src, int destsize ) {
|
|
strncpy( dest, src, destsize-1 );
|
|
dest[destsize-1] = 0;
|
|
}
|
|
|
|
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 (char *check)
|
|
{
|
|
int i;
|
|
|
|
for (i = 1;i<myargc;i++)
|
|
{
|
|
if ( !Q_strcasecmp(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 (char *filename)
|
|
{
|
|
FILE *f;
|
|
|
|
f = fopen(filename, "wb");
|
|
|
|
if (!f)
|
|
Error ("Error opening %s: %s",filename,strerror(errno));
|
|
|
|
return f;
|
|
}
|
|
|
|
FILE *SafeOpenRead (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, void *buffer, int count)
|
|
{
|
|
if (fwrite (buffer, 1, count, f) != (size_t)count)
|
|
Error ("File write failure");
|
|
}
|
|
|
|
|
|
/*
|
|
==============
|
|
FileExists
|
|
==============
|
|
*/
|
|
qboolean FileExists (char *filename)
|
|
{
|
|
FILE *f;
|
|
|
|
f = fopen (filename, "r");
|
|
if (!f)
|
|
return false;
|
|
fclose (f);
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
==============
|
|
LoadFile
|
|
==============
|
|
*/
|
|
int LoadFile (char *filename, void **bufferptr, int offset, int length)
|
|
{
|
|
FILE *f;
|
|
void *buffer;
|
|
|
|
f = SafeOpenRead(filename);
|
|
fseek(f, offset, SEEK_SET);
|
|
if (!length) length = Q_filelength(f);
|
|
buffer = GetMemory(length+1);
|
|
((char *)buffer)[length] = 0;
|
|
SafeRead(f, buffer, length);
|
|
fclose(f);
|
|
|
|
*bufferptr = buffer;
|
|
return length;
|
|
}
|
|
|
|
|
|
/*
|
|
==============
|
|
TryLoadFile
|
|
|
|
Allows failure
|
|
==============
|
|
*/
|
|
int TryLoadFile (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 = GetMemory(length+1);
|
|
((char *)buffer)[length] = 0;
|
|
SafeRead (f, buffer, length);
|
|
fclose (f);
|
|
|
|
*bufferptr = buffer;
|
|
return length;
|
|
}
|
|
|
|
|
|
/*
|
|
==============
|
|
SaveFile
|
|
==============
|
|
*/
|
|
void SaveFile (char *filename, void *buffer, int count)
|
|
{
|
|
FILE *f;
|
|
|
|
f = SafeOpenWrite (filename);
|
|
SafeWrite (f, buffer, count);
|
|
fclose (f);
|
|
}
|
|
|
|
|
|
|
|
void DefaultExtension (char *path, char *extension)
|
|
{
|
|
char *src;
|
|
//
|
|
// if path doesnt have a .EXT, append extension
|
|
// (extension should include the .)
|
|
//
|
|
src = path + strlen(path) - 1;
|
|
|
|
while (*src != PATHSEPERATOR && src != path)
|
|
{
|
|
if (*src == '.')
|
|
return; // it has an extension
|
|
src--;
|
|
}
|
|
|
|
strcat (path, extension);
|
|
}
|
|
|
|
|
|
void DefaultPath (char *path, 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 (char *path, char *dest)
|
|
{
|
|
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 (char *path, char *dest)
|
|
{
|
|
char *src;
|
|
|
|
src = path + strlen(path) - 1;
|
|
|
|
//
|
|
// back up until a \ or the start
|
|
//
|
|
while (src != path && *(src-1) != '\\' && *(src-1) != '/')
|
|
src--;
|
|
|
|
while (*src && *src != '.')
|
|
{
|
|
*dest++ = *src++;
|
|
}
|
|
*dest = 0;
|
|
}
|
|
|
|
void ExtractFileExtension (char *path, char *dest)
|
|
{
|
|
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 (char *hex)
|
|
{
|
|
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 (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;
|
|
}
|
|
|
|
#ifdef SIN
|
|
unsigned short LittleUnsignedShort (unsigned short l)
|
|
{
|
|
byte b1,b2;
|
|
|
|
b1 = l&255;
|
|
b2 = (l>>8)&255;
|
|
|
|
return (b1<<8) + b2;
|
|
}
|
|
|
|
unsigned short BigUnsignedShort (unsigned short l)
|
|
{
|
|
return l;
|
|
}
|
|
|
|
unsigned LittleUnsigned (unsigned l)
|
|
{
|
|
byte b1,b2,b3,b4;
|
|
|
|
b1 = l&255;
|
|
b2 = (l>>8)&255;
|
|
b3 = (l>>16)&255;
|
|
b4 = (l>>24)&255;
|
|
|
|
return ((unsigned)b1<<24) + ((unsigned)b2<<16) + ((unsigned)b3<<8) + b4;
|
|
}
|
|
|
|
unsigned BigUnsigned (unsigned l)
|
|
{
|
|
return l;
|
|
}
|
|
#endif
|
|
|
|
|
|
#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;
|
|
}
|
|
|
|
#ifdef SIN
|
|
unsigned short BigUnsignedShort (unsigned short l)
|
|
{
|
|
byte b1,b2;
|
|
|
|
b1 = l&255;
|
|
b2 = (l>>8)&255;
|
|
|
|
return (b1<<8) + b2;
|
|
}
|
|
|
|
unsigned short LittleUnsignedShort (unsigned short l)
|
|
{
|
|
return l;
|
|
}
|
|
|
|
|
|
unsigned BigUnsigned (unsigned l)
|
|
{
|
|
byte b1,b2,b3,b4;
|
|
|
|
b1 = l&255;
|
|
b2 = (l>>8)&255;
|
|
b3 = (l>>16)&255;
|
|
b4 = (l>>24)&255;
|
|
|
|
return ((unsigned)b1<<24) + ((unsigned)b2<<16) + ((unsigned)b3<<8) + b4;
|
|
}
|
|
|
|
unsigned LittleUnsigned (unsigned l)
|
|
{
|
|
return l;
|
|
}
|
|
#endif
|
|
|
|
|
|
#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 (char *path)
|
|
{
|
|
char *ofs, c;
|
|
|
|
if (path[1] == ':')
|
|
path += 2;
|
|
|
|
for (ofs = path+1 ; *ofs ; ofs++)
|
|
{
|
|
c = *ofs;
|
|
if (c == '/' || c == '\\')
|
|
{ // create the directory
|
|
*ofs = 0;
|
|
Q_mkdir (path);
|
|
*ofs = c;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
QCopyFile
|
|
|
|
Used to archive source files
|
|
============
|
|
*/
|
|
void QCopyFile (char *from, char *to)
|
|
{
|
|
void *buffer;
|
|
int length;
|
|
|
|
length = LoadFile (from, &buffer, 0, 0);
|
|
CreatePath (to);
|
|
SaveFile (to, buffer, length);
|
|
FreeMemory(buffer);
|
|
}
|
|
|
|
void FS_FreeFile(void *buf)
|
|
{
|
|
FreeMemory(buf);
|
|
} //end of the function FS_FreeFile
|
|
|
|
int FS_ReadFileAndCache(const char *qpath, void **buffer)
|
|
{
|
|
return LoadFile((char *) qpath, buffer, 0, 0);
|
|
} //end of the function FS_ReadFileAndCache
|
|
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int FS_FOpenFileRead( const char *filename, FILE **file, qboolean uniqueFILE )
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{
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*file = fopen(filename, "rb");
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return (*file != NULL);
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} //end of the function FS_FOpenFileRead
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