mirror of https://github.com/TTimo/GtkRadiant.git
687 lines
9.9 KiB
C
687 lines
9.9 KiB
C
/*
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===========================================================================
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Copyright (C) 1997-2006 Id Software, Inc.
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This file is part of Quake 2 Tools source code.
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Quake 2 Tools 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 2 Tools 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 Quake 2 Tools source code; 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 "cmdlib.h"
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#define PATHSEPERATOR '/'
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char com_token[1024];
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qboolean com_eof;
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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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/*
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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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int 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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{
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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
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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 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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/*
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=============================================================================
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MISC FUNCTIONS
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=============================================================================
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*/
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int argc;
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char *argv[MAX_NUM_ARGVS];
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/*
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============
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ParseCommandLine
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============
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*/
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void ParseCommandLine (char *lpCmdLine)
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{
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argc = 1;
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argv[0] = "programname";
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while (*lpCmdLine && (argc < MAX_NUM_ARGVS))
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{
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while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
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lpCmdLine++;
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if (*lpCmdLine)
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{
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argv[argc] = lpCmdLine;
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argc++;
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while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
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lpCmdLine++;
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if (*lpCmdLine)
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{
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*lpCmdLine = 0;
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lpCmdLine++;
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}
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}
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}
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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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*/
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int CheckParm (char *check)
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{
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int i;
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for (i = 1;i<argc;i++)
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{
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if ( !Q_strcasecmp(check, argv[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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================
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Q_filelength
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================
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*/
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int Q_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 *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 *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 SafeRead (FILE *f, void *buffer, int count)
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{
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if ( (int)fread (buffer, 1, count, f) != count)
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Error ("File read failure");
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}
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void SafeWrite (FILE *f, void *buffer, int count)
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{
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if ( (int)fwrite (buffer, 1, count, f) != count)
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Error ("File read failure");
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}
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/*
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==============
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LoadFile
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==============
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*/
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int 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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extern void *qmalloc( size_t size );
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f = fopen (filename, "rb");
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if (!f)
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{
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*bufferptr = NULL;
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return -1;
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}
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length = Q_filelength (f);
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buffer = qmalloc (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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==============
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LoadFileNoCrash
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returns -1 length if not present
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==============
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*/
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int LoadFileNoCrash (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 = fopen (filename, "rb");
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if (!f)
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return -1;
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length = Q_filelength (f);
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buffer = qmalloc (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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==============
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SaveFile
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==============
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*/
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void 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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void DefaultExtension (char *path, char *extension)
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{
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char *src;
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//
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// if path doesn't have a .EXT, append extension
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// (extension should include the .)
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//
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src = path + strlen(path) - 1;
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while (*src != PATHSEPERATOR && src != path)
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{
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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 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 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 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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{
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length--;
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if (path[length] == '/')
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return; // no extension
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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 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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//
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// back up until a \ or the start
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//
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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 ExtractFileName (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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//
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// back up until a \ or the start
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//
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while (src != path && *(src-1) != '/'
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&& *(src-1) != '\\' )
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src--;
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while (*src)
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{
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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 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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//
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// back up until a \ or the start
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//
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while (src != path && *(src-1) != '/'
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&& *(src-1) != '\\' )
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src--;
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while (*src && *src != '.')
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{
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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 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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//
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// back up until a . or the start
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//
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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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{
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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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==============
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ParseNum / ParseHex
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==============
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*/
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int 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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{
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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 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 _SGI_SOURCE
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#define __BIG_ENDIAN__
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#endif
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#ifdef __BIG_ENDIAN__
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short 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 BigShort (short l)
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{
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return l;
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}
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int LittleLong (int l)
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{
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byte b1,b2,b3,b4;
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b1 = l&255;
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b2 = (l>>8)&255;
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b3 = (l>>16)&255;
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b4 = (l>>24)&255;
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return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
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}
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int BigLong (int l)
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{
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return l;
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}
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float LittleFloat (float l)
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{
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union {byte b[4]; float f;} in, out;
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in.f = l;
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out.b[0] = in.b[3];
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out.b[1] = in.b[2];
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out.b[2] = in.b[1];
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out.b[3] = in.b[0];
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return out.f;
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}
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float BigFloat (float l)
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{
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return l;
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}
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#else
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short BigShort (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 LittleShort (short l)
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{
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return l;
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}
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int BigLong (int l)
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{
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byte b1,b2,b3,b4;
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b1 = l&255;
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b2 = (l>>8)&255;
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b3 = (l>>16)&255;
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b4 = (l>>24)&255;
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return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4;
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}
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int LittleLong (int l)
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{
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return l;
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}
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float BigFloat (float l)
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{
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union {byte b[4]; float f;} in, out;
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in.f = l;
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out.b[0] = in.b[3];
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out.b[1] = in.b[2];
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out.b[2] = in.b[1];
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out.b[3] = in.b[0];
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return out.f;
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}
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float LittleFloat (float l)
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{
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return l;
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}
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#endif
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