/* =========================================================================== Copyright (C) 1999-2005 Id Software, Inc. This file is part of Quake III Arena source code. Quake III Arena source code is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Quake III Arena source code is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Quake III Arena source code; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA =========================================================================== */ #include "../../qcommon/q_shared.h" #include "cmdlib.h" #include #include #define PATHSEPERATOR '/' char com_token[1024]; qboolean com_eof; char *copystring(const char *s) { char *b; b = malloc(strlen(s)+1); strcpy (b, s); return b; } float Q_FloatTime() { clock_t t = clock(); return ((float)t / CLOCKS_PER_SEC); } void Q_mkdir( const char* path ) { #ifdef WIN32 if (_mkdir (path) != -1) return; #else if (mkdir (path, 0777) != -1) return; #endif if (errno != EEXIST) Com_Error( ERR_FATAL, "mkdir %s: %s",path, strerror(errno) ); } /* ============ FileTime returns -1 if not present ============ */ int FileTime (const char *path) { struct stat buf; if (stat (path,&buf) == -1) return -1; return buf.st_mtime; } /* ============== COM_Parse Parse a token out of a string ============== */ char *ASM_Parse (char *data) { int c; int len; len = 0; com_token[0] = 0; if (!data) return NULL; // skip whitespace skipwhite: while ( (c = *data) <= ' ') { if (c == 0) { com_eof = qtrue; return NULL; // end of file; } data++; } // skip // comments if (c=='/' && data[1] == '/') { while (*data && *data != '\n') data++; goto skipwhite; } // handle quoted strings specially if (c == '\"') { data++; do { c = *data++; if (c=='\"') { com_token[len] = 0; return data; } com_token[len] = c; len++; } while (1); } // parse single characters if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':') { com_token[len] = c; len++; com_token[len] = 0; return data+1; } // parse a regular word do { com_token[len] = c; data++; len++; c = *data; if (c=='{' || c=='}'|| c==')'|| c=='(' || c=='\'' || c==':') break; } while (c>32); com_token[len] = 0; return data; } /* ============================================================================= MISC FUNCTIONS ============================================================================= */ /* ================ 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; } static FILE* myfopen(const char* filename, const char* mode) { char* p; char fn[MAX_OSPATH]; fn[0] = '\0'; strncat(fn, filename, sizeof(fn)-1); for(p=fn;*p;++p) if(*p == '\\') *p = '/'; return fopen(fn, mode); } FILE* SafeOpenRead( const char* filename ) { FILE* f = myfopen( filename, "rb" ); if (!f) Com_Error( ERR_FATAL, "Error opening %s: %s", filename, strerror(errno) ); return f; } FILE* SafeOpenWrite( const char* filename ) { FILE* f = myfopen( filename, "wb" ); if (!f) Com_Error( ERR_FATAL, "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 ) Com_Error( ERR_FATAL, "File read failure" ); } void SafeWrite( FILE* f, const void* buffer, int count ) { if ( fwrite(buffer, 1, count, f) != (size_t)count ) Com_Error( ERR_FATAL, "File write failure" ); } /* ============== FileExists ============== */ qboolean FileExists (const char *filename) { FILE *f; f = myfopen (filename, "r"); if (!f) return qfalse; fclose (f); return qtrue; } /* ============== LoadFile ============== */ int LoadFile( const char *filename, void **bufferptr ) { FILE *f; int length; void *buffer; f = SafeOpenRead (filename); length = Q_filelength (f); buffer = malloc (length+1); ((char *)buffer)[length] = 0; SafeRead (f, buffer, length); fclose (f); *bufferptr = buffer; return length; } /* ============== TryLoadFile Allows failure ============== */ int TryLoadFile (const char *filename, void **bufferptr) { FILE *f; int length; void *buffer; *bufferptr = NULL; f = myfopen (filename, "rb"); if (!f) return -1; length = Q_filelength (f); buffer = malloc (length+1); ((char *)buffer)[length] = 0; SafeRead (f, buffer, length); fclose (f); *bufferptr = buffer; return length; } /* ============== SaveFile ============== */ void SaveFile (const char *filename, const void *buffer, int count) { FILE *f; f = SafeOpenWrite (filename); SafeWrite (f, buffer, count); fclose (f); } void DefaultPath (char *path, const char *basepath) { char temp[128]; if (path[0] == PATHSEPERATOR) return; // absolute path location strcpy (temp,path); strcpy (path,basepath); strcat (path,temp); } void StripFilename (char *path) { int length; length = strlen(path)-1; while (length > 0 && path[length] != PATHSEPERATOR) length--; path[length] = 0; } static int ParseHex( const char* hex ) { int num = 0; const char* s = hex; while (*s) { num <<= 4; if (*s >= '0' && *s <= '9') num += *s-'0'; else if (*s >= 'a' && *s <= 'f') num += 10 + *s-'a'; else if (*s >= 'A' && *s <= 'F') num += 10 + *s-'A'; else Com_Error( ERR_FATAL, "Bad hex number: %s", hex ); s++; } return num; } int ParseNum( const char* s ) { if (s[0] == '$') return ParseHex( s+1 ); if (s[0] == '0' && s[1] == 'x') return ParseHex( s+2 ); return atoi( s ); } //======================================================= // 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 const unsigned short crctable[256] = { 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 }; void CRC_Init(unsigned short *crcvalue) { *crcvalue = CRC_INIT_VALUE; } void CRC_ProcessByte(unsigned short *crcvalue, byte data) { *crcvalue = (*crcvalue << 8) ^ crctable[(*crcvalue >> 8) ^ data]; } unsigned short CRC_Value(unsigned short crcvalue) { return crcvalue ^ CRC_XOR_VALUE; } //============================================================================= /* ============ CreatePath ============ */ void CreatePath (const char *path) { const char *ofs; char c; char dir[1024]; #ifdef _WIN32 int olddrive = -1; if ( path[1] == ':' ) { olddrive = _getdrive(); _chdrive( toupper( path[0] ) - 'A' + 1 ); } #endif if (path[1] == ':') path += 2; for (ofs = path+1 ; *ofs ; ofs++) { c = *ofs; if (c == '/' || c == '\\') { // create the directory memcpy( dir, path, ofs - path ); dir[ ofs - path ] = 0; Q_mkdir( dir ); } } #ifdef _WIN32 if ( olddrive != -1 ) { _chdrive( olddrive ); } #endif } /* ============ QCopyFile Used to archive source files ============ */ void QCopyFile (const char *from, const char *to) { void *buffer; int length; length = LoadFile (from, &buffer); CreatePath (to); SaveFile (to, buffer, length); free (buffer); }