892 lines
14 KiB
C
892 lines
14 KiB
C
/*
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cmdlib.c
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Command library
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Copyright (C) 1996-1997 id Software, Inc.
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Copyright (C) 2001 Jeff Teunissen <deek@dusknet.dhs.org>
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This program is free software; you can redistribute it and/or
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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
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef __unix__
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# ifdef NeXT
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# include <libc.h>
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# endif
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# include <unistd.h>
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#endif
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#ifdef WIN32
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#include <direct.h>
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#endif
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#include "cmdlib.h"
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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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Error
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For abnormal program terminations
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*/
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void
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Error (char *error, ...)
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{
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va_list argptr;
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printf ("************ ERROR ************\n");
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va_start (argptr, error);
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vprintf (error, argptr);
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va_end (argptr);
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printf ("\n");
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exit (1);
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}
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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
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SetQdirFromPath (char *path)
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{
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char temp[1024];
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char *c;
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if (!(path[0] == '/' || path[0] == '\\' || path[1] == ':')) { // partial path
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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 "quake" in path
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for (c = path; *c; c++) {
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if (!Q_strncasecmp (c, "quake", 5)) {
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strncpy (qdir, path, c + 6 - path);
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printf ("qdir: %s\n", qdir);
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c += 6;
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while (*c) {
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if (*c == '/' || *c == '\\') {
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strncpy (gamedir, path, c + 1 - path);
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printf ("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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}
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Error ("SeetQdirFromPath: no 'quake' in %s", path);
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}
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char *
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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 *
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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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sprintf (archivename, "%s/%s", archivedir, path);
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CopyFile (expanded, archivename);
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}
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return expanded;
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}
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char *
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copystring (char *s)
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{
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char *b;
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b = malloc (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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I_FloatTime
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*/
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double
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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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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
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Q_getwd (char *out)
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{
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#ifdef WIN32
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_getcwd (out, 256);
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strcat (out, "\\");
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#else
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getcwd (out, 256);
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#endif
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}
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void
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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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FileTime
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returns -1 if not present
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*/
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int
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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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COM_Parse
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Parse a token out of a string
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*/
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char *
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COM_Parse (char *data)
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{
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int c;
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int 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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if (c == 0) {
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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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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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data++;
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do {
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c = *data++;
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if (c == '\"') {
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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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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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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 == '\''
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|| 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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int
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Q_strncasecmp (char *s1, char *s2, int n)
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{
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int c1, c2;
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while (1) {
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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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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
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}
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if (!c1)
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return 0; // strings are equal
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}
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return -1;
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}
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int
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Q_strcasecmp (char *s1, char *s2)
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{
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return Q_strncasecmp (s1, s2, 99999);
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}
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char *
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strupr (char *start)
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{
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char *in;
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in = start;
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while (*in) {
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*in = toupper (*in);
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in++;
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}
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return start;
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}
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char *
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strlower (char *start)
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{
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char *in;
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in = start;
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while (*in) {
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*in = tolower (*in);
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in++;
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}
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return start;
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}
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/*
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=============================================================================
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MISC FUNCTIONS
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=============================================================================
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*/
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/*
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CheckParm
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Checks for the given parameter in the program's command line arguments
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Returns the argument number (1 to argc-1) or 0 if not present
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*/
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int
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CheckParm (char *check)
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{
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int i;
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for (i = 1; i < myargc; i++) {
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if (!Q_strcasecmp (check, myargv[i]))
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return i;
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}
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return 0;
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}
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/*
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filelength
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*/
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int
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filelength (FILE *f)
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{
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int pos;
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int end;
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pos = ftell (f);
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fseek (f, 0, SEEK_END);
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end = ftell (f);
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fseek (f, pos, SEEK_SET);
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return end;
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}
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FILE *
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SafeOpenWrite (char *filename)
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{
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FILE *f;
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f = fopen (filename, "wb");
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if (!f)
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Error ("Error opening %s: %s", filename, strerror (errno));
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return f;
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}
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FILE *
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SafeOpenRead (char *filename)
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{
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FILE *f;
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f = fopen (filename, "rb");
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if (!f)
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Error ("Error opening %s: %s", filename, strerror (errno));
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return f;
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}
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void
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SafeRead (FILE *f, void *buffer, int count)
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{
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if (fread (buffer, 1, count, f) != (size_t) count)
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Error ("File read failure");
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}
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void
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SafeWrite (FILE *f, void *buffer, int count)
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{
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if (fwrite (buffer, 1, count, f) != (size_t) count)
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Error ("File read failure");
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}
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/*
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LoadFile
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*/
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int
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LoadFile (char *filename, void **bufferptr)
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{
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FILE *f;
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int length;
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void *buffer;
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f = SafeOpenRead (filename);
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length = filelength (f);
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buffer = malloc (length + 1);
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((char *) buffer)[length] = 0;
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SafeRead (f, buffer, length);
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fclose (f);
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*bufferptr = buffer;
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return length;
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}
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/*
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SaveFile
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*/
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void
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SaveFile (char *filename, void *buffer, int count)
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{
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FILE *f;
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f = SafeOpenWrite (filename);
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SafeWrite (f, buffer, count);
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fclose (f);
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}
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/*
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DefaultExtension
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Append an extension if the path doesn't have one.
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The extension passed should include . at the beginning.
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*/
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void
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DefaultExtension (char *path, char *extension)
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{
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char *src;
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src = path + strlen (path) - 1;
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while (*src != PATHSEPERATOR && src != path) {
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if (*src == '.')
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return; // it has an extension
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src--;
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}
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strcat (path, extension);
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}
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void
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DefaultPath (char *path, char *basepath)
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{
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char temp[128];
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if (path[0] == PATHSEPERATOR)
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return; // absolute path location
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strcpy (temp, path);
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strcpy (path, basepath);
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strcat (path, temp);
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}
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void
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StripFilename (char *path)
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{
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int length;
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length = strlen (path) - 1;
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while (length > 0 && path[length] != PATHSEPERATOR)
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length--;
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path[length] = 0;
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}
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void
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StripExtension (char *path)
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{
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int length;
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length = strlen (path) - 1;
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while (length > 0 && path[length] != '.') {
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length--;
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if (path[length] == PATHSEPERATOR) // no extension
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return;
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}
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if (length)
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path[length] = 0;
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}
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/*
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====================
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Extract file parts
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====================
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*/
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void
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ExtractFilePath (char *path, char *dest)
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{
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char *src;
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src = path + strlen (path) - 1;
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// back up until a / or the start
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while (src != path && *(src - 1) != PATHSEPERATOR)
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src--;
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memcpy (dest, path, src - path);
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dest[src - path] = 0;
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}
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void
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ExtractFileBase (char *path, char *dest)
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{
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char *src;
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src = path + strlen (path) - 1;
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// back up until a / or the start
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while (src != path && *(src - 1) != PATHSEPERATOR)
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src--;
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while (*src && *src != '.') {
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*dest++ = *src++;
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}
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*dest = 0;
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}
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void
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ExtractFileExtension (char *path, char *dest)
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{
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char *src;
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src = path + strlen (path) - 1;
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// back up until a . or the start
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while (src != path && *(src - 1) != '.')
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src--;
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if (src == path) {
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*dest = 0; // no extension
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return;
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}
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strcpy (dest, src);
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}
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/*
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ParseNum / ParseHex
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*/
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int
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ParseHex (char *hex)
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{
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char *str;
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int num;
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num = 0;
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str = hex;
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while (*str) {
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num <<= 4;
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if (*str >= '0' && *str <= '9')
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num += *str - '0';
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else if (*str >= 'a' && *str <= 'f')
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num += 10 + *str - 'a';
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else if (*str >= 'A' && *str <= 'F')
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num += 10 + *str - 'A';
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else
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Error ("Bad hex number: %s", hex);
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str++;
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}
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return num;
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}
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int
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ParseNum (char *str)
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{
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if (str[0] == '$')
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return ParseHex (str + 1);
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if (str[0] == '0' && str[1] == 'x')
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return ParseHex (str + 2);
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return atol (str);
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}
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/*
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============================================================================
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BYTE ORDER FUNCTIONS
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============================================================================
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*/
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#ifdef WORDS_BIGENDIAN
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short
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LittleShort (short l)
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{
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byte b1, b2;
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b1 = l & 255;
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b2 = (l >> 8) & 255;
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return (b1 << 8) + b2;
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}
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short
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BigShort (short l)
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{
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return l;
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}
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int
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LittleLong (int l)
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{
|
|
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
|
|
|
|
Create a path.
|
|
*/
|
|
void
|
|
CreatePath (char *path)
|
|
{
|
|
char *ofs, c;
|
|
|
|
for (ofs = path + 1; *ofs; ofs++) {
|
|
|
|
c = *ofs;
|
|
if (c == '/' || c == '\\') { // create the directory
|
|
*ofs = 0;
|
|
Q_mkdir (path);
|
|
*ofs = c;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
CopyFile
|
|
|
|
Used to archive source files
|
|
*/
|
|
void
|
|
CopyFile (char *from, char *to)
|
|
{
|
|
void *buffer;
|
|
int length;
|
|
|
|
length = LoadFile (from, &buffer);
|
|
CreatePath (to);
|
|
SaveFile (to, buffer, length);
|
|
free (buffer);
|
|
}
|