1005 lines
17 KiB
C++
1005 lines
17 KiB
C++
// q_shared.c -- stateless support routines that are included in each code dll
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#include "q_shared.h"
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float Com_Clamp( float min, float max, float value ) {
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if ( value < min ) {
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return min;
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}
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if ( value > max ) {
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return max;
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}
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return value;
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}
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/*
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============
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COM_SkipPath
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============
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*/
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char *COM_SkipPath (char *pathname)
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{
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char *last;
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last = pathname;
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while (*pathname)
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{
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if (*pathname=='/')
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last = pathname+1;
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pathname++;
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}
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return last;
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}
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/*
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============
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COM_StripExtension
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============
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*/
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void COM_StripExtension( const char *in, char *out ) {
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while ( *in && *in != '.' ) {
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*out++ = *in++;
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}
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*out = 0;
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}
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/*
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==================
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COM_DefaultExtension
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==================
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*/
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void COM_DefaultExtension (char *path, int maxSize, const char *extension ) {
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char oldPath[MAX_QPATH];
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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 != '/' && src != path) {
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if ( *src == '.' ) {
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return; // it has an extension
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}
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src--;
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}
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Q_strncpyz( oldPath, path, sizeof( oldPath ) );
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Com_sprintf( path, maxSize, "%s%s", oldPath, extension );
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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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// can't just use function pointers, or dll linkage can
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// mess up when qcommon is included in multiple places
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static short (*_BigShort) (short l);
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static short (*_LittleShort) (short l);
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static int (*_BigLong) (int l);
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static int (*_LittleLong) (int l);
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static float (*_BigFloat) (float l);
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static float (*_LittleFloat) (float l);
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#ifdef _M_IX86
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//
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// optimised stuff for Intel, since most of our data is in that format anyway...
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//
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short BigShort(short l){return _BigShort(l);}
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int BigLong (int l) {return _BigLong(l);}
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float BigFloat (float l) {return _BigFloat(l);}
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//short LittleShort(short l) {return _LittleShort(l);} // these are now macros in q_shared.h
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//int LittleLong (int l) {return _LittleLong(l);} //
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//float LittleFloat (float l) {return _LittleFloat(l);} //
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//
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#else
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//
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// standard smart-swap code...
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//
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short BigShort(short l){return _BigShort(l);}
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short LittleShort(short l) {return _LittleShort(l);}
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int BigLong (int l) {return _BigLong(l);}
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int LittleLong (int l) {return _LittleLong(l);}
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float BigFloat (float l) {return _BigFloat(l);}
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float LittleFloat (float l) {return _LittleFloat(l);}
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//
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#endif
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short ShortSwap (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 ShortNoSwap (short l)
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{
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return l;
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}
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int LongSwap (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 LongNoSwap (int l)
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{
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return l;
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}
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float FloatSwap (float f)
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{
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union
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{
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float f;
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byte b[4];
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} dat1, dat2;
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dat1.f = f;
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dat2.b[0] = dat1.b[3];
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dat2.b[1] = dat1.b[2];
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dat2.b[2] = dat1.b[1];
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dat2.b[3] = dat1.b[0];
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return dat2.f;
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}
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float FloatNoSwap (float f)
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{
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return f;
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}
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/*
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================
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Swap_Init
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================
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*/
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void Swap_Init (void)
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{
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byte swaptest[2] = {1,0};
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// set the byte swapping variables in a portable manner
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if ( *(short *)swaptest == 1)
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{
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_BigShort = ShortSwap;
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_LittleShort = ShortNoSwap;
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_BigLong = LongSwap;
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_LittleLong = LongNoSwap;
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_BigFloat = FloatSwap;
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_LittleFloat = FloatNoSwap;
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}
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else
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{
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_BigShort = ShortNoSwap;
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_LittleShort = ShortSwap;
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_BigLong = LongNoSwap;
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_LittleLong = LongSwap;
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_BigFloat = FloatNoSwap;
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_LittleFloat = FloatSwap;
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}
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}
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/*
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============================================================================
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PARSING
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============================================================================
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*/
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static char com_token[MAX_TOKEN_CHARS];
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static int com_lines;
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void COM_BeginParseSession( void )
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{
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com_lines = 0;
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}
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int COM_GetCurrentParseLine( void )
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{
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return com_lines;
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}
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char *COM_Parse( char **data_p )
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{
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return COM_ParseExt( data_p, qtrue );
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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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Will never return NULL, just empty strings
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If "allowLineBreaks" is qtrue then an empty
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string will be returned if the next token is
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a newline.
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==============
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*/
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static char *SkipWhitespace( char *data, qboolean *hasNewLines ) {
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int c;
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while( (c = *data) <= ' ') {
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if( !c ) {
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return NULL;
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}
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if( c == '\n' ) {
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com_lines++;
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*hasNewLines = qtrue;
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}
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data++;
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}
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return data;
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}
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char *COM_ParseExt( char **data_p, qboolean allowLineBreaks )
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{
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int c = 0, len;
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qboolean hasNewLines = qfalse;
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char *data;
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data = *data_p;
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len = 0;
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com_token[0] = 0;
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// make sure incoming data is valid
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if ( !data )
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{
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*data_p = NULL;
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return com_token;
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}
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while ( 1 )
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{
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// skip whitespace
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data = SkipWhitespace( data, &hasNewLines );
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if ( !data )
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{
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*data_p = NULL;
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return com_token;
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}
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if ( hasNewLines && !allowLineBreaks )
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{
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*data_p = data;
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return com_token;
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}
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c = *data;
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// skip double slash 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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}
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// skip /* */ comments
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else if ( c=='/' && data[1] == '*' )
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{
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while ( *data && ( *data != '*' || data[1] != '/' ) )
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{
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data++;
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}
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if ( *data )
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{
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data += 2;
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}
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}
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else
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{
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break;
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}
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}
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// handle quoted strings
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if (c == '\"')
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{
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data++;
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while (1)
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{
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c = *data++;
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if (c=='\"' || !c)
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{
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com_token[len] = 0;
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*data_p = ( char * ) data;
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return com_token;
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}
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if (len < MAX_TOKEN_CHARS)
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{
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com_token[len] = c;
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len++;
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}
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}
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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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if (len < MAX_TOKEN_CHARS)
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{
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com_token[len] = c;
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len++;
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}
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data++;
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c = *data;
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if ( c == '\n' )
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com_lines++;
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} while (c>32);
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if (len == MAX_TOKEN_CHARS)
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{
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// Com_Printf ("Token exceeded %i chars, discarded.\n", MAX_TOKEN_CHARS);
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len = 0;
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}
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com_token[len] = 0;
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*data_p = ( char * ) data;
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return com_token;
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}
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/*
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==================
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COM_MatchToken
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==================
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*/
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void COM_MatchToken( char **buf_p, char *match ) {
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char *token;
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token = COM_Parse( buf_p );
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if ( strcmp( token, match ) ) {
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Com_Error( ERR_DROP, "MatchToken: %s != %s", token, match );
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}
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}
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/*
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=================
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SkipBracedSection
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The next token should be an open brace.
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Skips until a matching close brace is found.
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Internal brace depths are properly skipped.
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=================
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*/
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void SkipBracedSection (char **program) {
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char *token;
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int depth=0;
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if (com_token[0]=='{') { //for tr_shader which just ate the brace
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depth = 1;
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}
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do {
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token = COM_ParseExt( program, qtrue );
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if( token[1] == 0 ) {
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if( token[0] == '{' ) {
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depth++;
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}
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else if( token[0] == '}' ) {
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depth--;
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}
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}
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} while (depth && *program);
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}
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/*
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=================
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SkipRestOfLine
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=================
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*/
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void SkipRestOfLine ( char **data ) {
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char *p;
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int c;
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p = *data;
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while ( (c = *p++) != 0 ) {
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if ( c == '\n' ) {
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com_lines++;
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break;
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}
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}
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*data = p;
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}
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void Parse1DMatrix (char **buf_p, int x, float *m) {
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char *token;
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int i;
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COM_MatchToken( buf_p, "(" );
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for (i = 0 ; i < x ; i++) {
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token = COM_Parse(buf_p);
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m[i] = atof(token);
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}
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COM_MatchToken( buf_p, ")" );
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}
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void Parse2DMatrix (char **buf_p, int y, int x, float *m) {
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int i;
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COM_MatchToken( buf_p, "(" );
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for (i = 0 ; i < y ; i++) {
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Parse1DMatrix (buf_p, x, m + i * x);
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}
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COM_MatchToken( buf_p, ")" );
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}
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void Parse3DMatrix (char **buf_p, int z, int y, int x, float *m) {
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int i;
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COM_MatchToken( buf_p, "(" );
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for (i = 0 ; i < z ; i++) {
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Parse2DMatrix (buf_p, y, x, m + i * x*y);
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}
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COM_MatchToken( buf_p, ")" );
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}
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/*
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============================================================================
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LIBRARY REPLACEMENT FUNCTIONS
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============================================================================
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*/
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int Q_isprint( int c )
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{
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if ( c >= 0x20 && c <= 0x7E )
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return ( 1 );
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return ( 0 );
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}
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int Q_islower( int c )
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{
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if (c >= 'a' && c <= 'z')
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return ( 1 );
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return ( 0 );
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}
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int Q_isupper( int c )
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{
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if (c >= 'A' && c <= 'Z')
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return ( 1 );
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return ( 0 );
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}
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int Q_isalpha( int c )
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{
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if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
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return ( 1 );
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return ( 0 );
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}
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char* Q_strrchr( const char* string, int c )
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{
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char cc = c;
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char *s;
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char *sp=(char *)0;
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s = (char*)string;
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while (*s)
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{
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if (*s == cc)
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sp = s;
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s++;
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}
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if (cc == 0)
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sp = s;
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return sp;
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}
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/*
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=============
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Q_strncpyz
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Safe strncpy that ensures a trailing zero
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=============
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*/
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void Q_strncpyz( char *dest, const char *src, int destsize, qboolean bBarfIfTooLong/* = qfalse */ )
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{
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if ( !src ) {
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Com_Error( ERR_FATAL, "Q_strncpyz: NULL src" );
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}
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if ( destsize < 1 ) {
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Com_Error(ERR_FATAL,"Q_strncpyz: destsize < 1" );
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}
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if (bBarfIfTooLong)
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{
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if ( strlen(src)+1 > destsize)
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{
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Com_Error(ERR_FATAL,"String dest buffer too small to hold string \"%s\"",src);
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}
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}
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strncpy( dest, src, destsize-1 );
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dest[destsize-1] = 0;
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}
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int Q_stricmpn (const char *s1, const char *s2, int n) {
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int c1, c2;
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do {
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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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}
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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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}
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if (c2 >= 'a' && c2 <= 'z') {
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c2 -= ('a' - 'A');
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}
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if (c1 != c2) {
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return c1 < c2 ? -1 : 1;
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}
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}
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} while (c1);
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return 0; // strings are equal
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}
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int Q_strncmp (const char *s1, const char *s2, int n) {
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int c1, c2;
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do {
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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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}
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if (c1 != c2) {
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return c1 < c2 ? -1 : 1;
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}
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} while (c1);
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return 0; // strings are equal
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}
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int Q_stricmp (const char *s1, const char *s2) {
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return Q_stricmpn (s1, s2, 99999);
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}
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char *Q_strlwr( char *s1 ) {
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char *s;
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s = s1;
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while ( *s ) {
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*s = tolower(*s);
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s++;
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}
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return s1;
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}
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char *Q_strupr( char *s1 ) {
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char *s;
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s = s1;
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while ( *s ) {
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*s = toupper(*s);
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s++;
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}
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return s1;
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}
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// never goes past bounds or leaves without a terminating 0
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void Q_strcat( char *dest, int size, const char *src ) {
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int l1;
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l1 = strlen( dest );
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if ( l1 >= size ) {
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Com_Error( ERR_FATAL, "Q_strcat: already overflowed" );
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}
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Q_strncpyz( dest + l1, src, size - l1 );
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}
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int Q_PrintStrlen( const char *string ) {
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int len;
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const char *p;
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if( !string ) {
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return 0;
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}
|
|
|
|
len = 0;
|
|
p = string;
|
|
while( *p ) {
|
|
if( Q_IsColorString( p ) ) {
|
|
p += 2;
|
|
continue;
|
|
}
|
|
p++;
|
|
len++;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
|
|
char *Q_CleanStr( char *string ) {
|
|
char* d;
|
|
char* s;
|
|
int c;
|
|
|
|
s = string;
|
|
d = string;
|
|
while ((c = *s) != 0 ) {
|
|
if ( Q_IsColorString( s ) ) {
|
|
s++;
|
|
}
|
|
else if ( c >= 0x20 && c <= 0x7E ) {
|
|
*d++ = c;
|
|
}
|
|
s++;
|
|
}
|
|
*d = '\0';
|
|
|
|
return string;
|
|
}
|
|
|
|
|
|
void QDECL Com_sprintf( char *dest, int size, const char *fmt, ...) {
|
|
int len;
|
|
va_list argptr;
|
|
char bigbuffer[32000]; // big, but small enough to fit in PPC stack
|
|
|
|
va_start (argptr,fmt);
|
|
len = vsprintf (bigbuffer,fmt,argptr);
|
|
va_end (argptr);
|
|
if ( len >= sizeof( bigbuffer ) ) {
|
|
Com_Error( ERR_FATAL, "Com_sprintf: overflowed bigbuffer" );
|
|
}
|
|
if (len >= size) {
|
|
Com_Printf ("Com_sprintf: overflow of %i in %i\n", len, size);
|
|
}
|
|
Q_strncpyz (dest, bigbuffer, size );
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
va
|
|
|
|
does a varargs printf into a temp buffer, so I don't need to have
|
|
varargs versions of all text functions.
|
|
FIXME: make this buffer size safe someday
|
|
============
|
|
*/
|
|
char * QDECL va( char *format, ... ) {
|
|
va_list argptr;
|
|
static char string[2][32000]; // in case va is called by nested functions
|
|
static int index = 0;
|
|
char *buf;
|
|
|
|
buf = string[index & 1];
|
|
index++;
|
|
|
|
va_start (argptr, format);
|
|
vsprintf (buf, format,argptr);
|
|
va_end (argptr);
|
|
|
|
return buf;
|
|
}
|
|
|
|
|
|
/*
|
|
=====================================================================
|
|
|
|
INFO STRINGS
|
|
|
|
=====================================================================
|
|
*/
|
|
|
|
/*
|
|
===============
|
|
Info_ValueForKey
|
|
|
|
Searches the string for the given
|
|
key and returns the associated value, or an empty string.
|
|
FIXME: overflow check?
|
|
===============
|
|
*/
|
|
char *Info_ValueForKey( const char *s, const char *key ) {
|
|
char pkey[MAX_INFO_KEY];
|
|
static char value[2][MAX_INFO_VALUE]; // use two buffers so compares
|
|
// work without stomping on each other
|
|
static int valueindex = 0;
|
|
char *o;
|
|
|
|
if ( !s || !key ) {
|
|
return "";
|
|
}
|
|
|
|
if ( strlen( s ) >= MAX_INFO_STRING ) {
|
|
Com_Error( ERR_DROP, "Info_ValueForKey: oversize infostring" );
|
|
}
|
|
|
|
valueindex ^= 1;
|
|
if (*s == '\\')
|
|
s++;
|
|
while (1)
|
|
{
|
|
o = pkey;
|
|
while (*s != '\\')
|
|
{
|
|
if (!*s)
|
|
return "";
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
s++;
|
|
|
|
o = value[valueindex];
|
|
|
|
while (*s != '\\' && *s)
|
|
{
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
|
|
if (!Q_stricmp (key, pkey) )
|
|
return value[valueindex];
|
|
|
|
if (!*s)
|
|
break;
|
|
s++;
|
|
}
|
|
|
|
return "";
|
|
}
|
|
|
|
|
|
/*
|
|
===================
|
|
Info_NextPair
|
|
|
|
Used to itterate through all the key/value pairs in an info string
|
|
===================
|
|
*/
|
|
void Info_NextPair( const char **head, char key[MAX_INFO_KEY], char value[MAX_INFO_VALUE] ) {
|
|
char *o;
|
|
const char *s;
|
|
|
|
s = *head;
|
|
|
|
if ( *s == '\\' ) {
|
|
s++;
|
|
}
|
|
key[0] = 0;
|
|
value[0] = 0;
|
|
|
|
o = key;
|
|
while ( *s != '\\' ) {
|
|
if ( !*s ) {
|
|
*o = 0;
|
|
*head = s;
|
|
return;
|
|
}
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
s++;
|
|
|
|
o = value;
|
|
while ( *s != '\\' && *s ) {
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
|
|
*head = s;
|
|
}
|
|
|
|
|
|
/*
|
|
===================
|
|
Info_RemoveKey
|
|
===================
|
|
*/
|
|
void Info_RemoveKey( char *s, const char *key ) {
|
|
char *start;
|
|
char pkey[MAX_INFO_KEY];
|
|
char value[MAX_INFO_VALUE];
|
|
char *o;
|
|
|
|
if ( strlen( s ) >= MAX_INFO_STRING ) {
|
|
Com_Error( ERR_DROP, "Info_RemoveKey: oversize infostring" );
|
|
}
|
|
|
|
if (strchr (key, '\\')) {
|
|
return;
|
|
}
|
|
|
|
while (1)
|
|
{
|
|
start = s;
|
|
if (*s == '\\')
|
|
s++;
|
|
o = pkey;
|
|
while (*s != '\\')
|
|
{
|
|
if (!*s)
|
|
return;
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
s++;
|
|
|
|
o = value;
|
|
while (*s != '\\' && *s)
|
|
{
|
|
if (!*s)
|
|
return;
|
|
*o++ = *s++;
|
|
}
|
|
*o = 0;
|
|
|
|
if (!strcmp (key, pkey) )
|
|
{
|
|
strcpy (start, s); // remove this part
|
|
return;
|
|
}
|
|
|
|
if (!*s)
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
Info_Validate
|
|
|
|
Some characters are illegal in info strings because they
|
|
can mess up the server's parsing
|
|
==================
|
|
*/
|
|
qboolean Info_Validate( const char *s ) {
|
|
if ( strchr( s, '\"' ) ) {
|
|
return qfalse;
|
|
}
|
|
if ( strchr( s, ';' ) ) {
|
|
return qfalse;
|
|
}
|
|
return qtrue;
|
|
}
|
|
|
|
/*
|
|
==================
|
|
Info_SetValueForKey
|
|
|
|
Changes or adds a key/value pair
|
|
==================
|
|
*/
|
|
void Info_SetValueForKey( char *s, const char *key, const char *value ) {
|
|
char newi[MAX_INFO_STRING];
|
|
|
|
if ( strlen( s ) >= MAX_INFO_STRING ) {
|
|
Com_Error( ERR_DROP, "Info_SetValueForKey: oversize infostring" );
|
|
}
|
|
|
|
if (strchr (key, '\\') || strchr (value, '\\'))
|
|
{
|
|
Com_Printf ("Can't use keys or values with a \\\n");
|
|
return;
|
|
}
|
|
|
|
if (strchr (key, ';') || strchr (value, ';'))
|
|
{
|
|
Com_Printf ("Can't use keys or values with a semicolon\n");
|
|
return;
|
|
}
|
|
|
|
if (strchr (key, '\"') || strchr (value, '\"'))
|
|
{
|
|
Com_Printf ("Can't use keys or values with a \"\n");
|
|
return;
|
|
}
|
|
|
|
Info_RemoveKey (s, key);
|
|
if (!value || !strlen(value))
|
|
return;
|
|
|
|
Com_sprintf (newi, sizeof(newi), "\\%s\\%s", key, value);
|
|
|
|
if (strlen(newi) + strlen(s) > MAX_INFO_STRING)
|
|
{
|
|
Com_Printf ("Info string length exceeded\n");
|
|
return;
|
|
}
|
|
|
|
strcat (s, newi);
|
|
}
|
|
|
|
/*
|
|
========================================================================
|
|
|
|
String ID Tables
|
|
|
|
========================================================================
|
|
*/
|
|
|
|
|
|
/*
|
|
-------------------------
|
|
GetIDForString
|
|
-------------------------
|
|
*/
|
|
|
|
#define VALIDSTRING( a ) ( ( a != NULL ) && ( a[0] != NULL ) )
|
|
|
|
int GetIDForString ( stringID_table_t *table, const char *string )
|
|
{
|
|
int index = 0;
|
|
|
|
while ( VALIDSTRING( table[index].name ) )
|
|
{
|
|
if ( !Q_stricmp( table[index].name, string ) )
|
|
return table[index].id;
|
|
|
|
index++;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
-------------------------
|
|
GetStringForID
|
|
-------------------------
|
|
*/
|
|
|
|
const char *GetStringForID( stringID_table_t *table, int id )
|
|
{
|
|
int index = 0;
|
|
|
|
while ( VALIDSTRING( table[index].name ) )
|
|
{
|
|
if ( table[index].id == id )
|
|
return table[index].name;
|
|
|
|
index++;
|
|
}
|
|
|
|
return NULL;
|
|
}
|