home *** CD-ROM | disk | FTP | other *** search
- // scriplib.c
-
- #include "cmdlib.h"
- #include "scriplib.h"
-
- /*
- =============================================================================
-
- PARSING STUFF
-
- =============================================================================
- */
-
- typedef struct
- {
- char filename[1024];
- char *buffer,*script_p,*end_p;
- int line;
- } script_t;
-
- #define MAX_INCLUDES 8
- script_t scriptstack[MAX_INCLUDES];
- script_t *script;
- int scriptline;
-
- char token[MAXTOKEN];
- qboolean endofscript;
- qboolean tokenready; // only qtrue if UnGetToken was just called
-
- /*
- ==============
- AddScriptToStack
- ==============
- */
- void AddScriptToStack( const char *filename ) {
- int size;
-
- script++;
- if (script == &scriptstack[MAX_INCLUDES])
- Error ("script file exceeded MAX_INCLUDES");
- strcpy (script->filename, ExpandPath (filename) );
-
- size = LoadFile (script->filename, (void **)&script->buffer);
-
- printf ("entering %s\n", script->filename);
-
- script->line = 1;
-
- script->script_p = script->buffer;
- script->end_p = script->buffer + size;
- }
-
-
- /*
- ==============
- LoadScriptFile
- ==============
- */
- void LoadScriptFile( const char *filename ) {
- script = scriptstack;
- AddScriptToStack (filename);
-
- endofscript = qfalse;
- tokenready = qfalse;
- }
-
-
- /*
- ==============
- ParseFromMemory
- ==============
- */
- void ParseFromMemory (char *buffer, int size)
- {
- script = scriptstack;
- script++;
- if (script == &scriptstack[MAX_INCLUDES])
- Error ("script file exceeded MAX_INCLUDES");
- strcpy (script->filename, "memory buffer" );
-
- script->buffer = buffer;
- script->line = 1;
- script->script_p = script->buffer;
- script->end_p = script->buffer + size;
-
- endofscript = qfalse;
- tokenready = qfalse;
- }
-
-
- /*
- ==============
- UnGetToken
-
- Signals that the current token was not used, and should be reported
- for the next GetToken. Note that
-
- GetToken (qtrue);
- UnGetToken ();
- GetToken (qfalse);
-
- could cross a line boundary.
- ==============
- */
- void UnGetToken (void)
- {
- tokenready = qtrue;
- }
-
-
- qboolean EndOfScript (qboolean crossline)
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
-
- if (!strcmp (script->filename, "memory buffer"))
- {
- endofscript = qtrue;
- return qfalse;
- }
-
- free (script->buffer);
- if (script == scriptstack+1)
- {
- endofscript = qtrue;
- return qfalse;
- }
- script--;
- scriptline = script->line;
- printf ("returning to %s\n", script->filename);
- return GetToken (crossline);
- }
-
- /*
- ==============
- GetToken
- ==============
- */
- qboolean GetToken (qboolean crossline)
- {
- char *token_p;
-
- if (tokenready) // is a token allready waiting?
- {
- tokenready = qfalse;
- return qtrue;
- }
-
- if (script->script_p >= script->end_p)
- return EndOfScript (crossline);
-
- //
- // skip space
- //
- skipspace:
- while (*script->script_p <= 32)
- {
- if (script->script_p >= script->end_p)
- return EndOfScript (crossline);
- if (*script->script_p++ == '\n')
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- scriptline = script->line++;
- }
- }
-
- if (script->script_p >= script->end_p)
- return EndOfScript (crossline);
-
- // ; # // comments
- if (*script->script_p == ';' || *script->script_p == '#'
- || ( script->script_p[0] == '/' && script->script_p[1] == '/') )
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- while (*script->script_p++ != '\n')
- if (script->script_p >= script->end_p)
- return EndOfScript (crossline);
- scriptline = script->line++;
- goto skipspace;
- }
-
- // /* */ comments
- if (script->script_p[0] == '/' && script->script_p[1] == '*')
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- script->script_p+=2;
- while (script->script_p[0] != '*' && script->script_p[1] != '/')
- {
- if ( *script->script_p == '\n' ) {
- scriptline = script->line++;
- }
- script->script_p++;
- if (script->script_p >= script->end_p)
- return EndOfScript (crossline);
- }
- script->script_p += 2;
- goto skipspace;
- }
-
- //
- // copy token
- //
- token_p = token;
-
- if (*script->script_p == '"')
- {
- // quoted token
- script->script_p++;
- while (*script->script_p != '"')
- {
- *token_p++ = *script->script_p++;
- if (script->script_p == script->end_p)
- break;
- if (token_p == &token[MAXTOKEN])
- Error ("Token too large on line %i\n",scriptline);
- }
- script->script_p++;
- }
- else // regular token
- while ( *script->script_p > 32 && *script->script_p != ';')
- {
- *token_p++ = *script->script_p++;
- if (script->script_p == script->end_p)
- break;
- if (token_p == &token[MAXTOKEN])
- Error ("Token too large on line %i\n",scriptline);
- }
-
- *token_p = 0;
-
- if (!strcmp (token, "$include"))
- {
- GetToken (qfalse);
- AddScriptToStack (token);
- return GetToken (crossline);
- }
-
- return qtrue;
- }
-
-
- /*
- ==============
- TokenAvailable
-
- Returns qtrue if there is another token on the line
- ==============
- */
- qboolean TokenAvailable (void) {
- int oldLine;
- qboolean r;
-
- oldLine = script->line;
- r = GetToken( qtrue );
- if ( !r ) {
- return qfalse;
- }
- UnGetToken();
- if ( oldLine == script->line ) {
- return qtrue;
- }
- return qfalse;
- }
-
-
- //=====================================================================
-
-
- void MatchToken( char *match ) {
- GetToken( qtrue );
-
- if ( strcmp( token, match ) ) {
- Error( "MatchToken( \"%s\" ) failed at line %i", match, scriptline );
- }
- }
-
-
- void Parse1DMatrix (int x, vec_t *m) {
- int i;
-
- MatchToken( "(" );
-
- for (i = 0 ; i < x ; i++) {
- GetToken( qfalse );
- m[i] = atof(token);
- }
-
- MatchToken( ")" );
- }
-
- void Parse2DMatrix (int y, int x, vec_t *m) {
- int i;
-
- MatchToken( "(" );
-
- for (i = 0 ; i < y ; i++) {
- Parse1DMatrix (x, m + i * x);
- }
-
- MatchToken( ")" );
- }
-
- void Parse3DMatrix (int z, int y, int x, vec_t *m) {
- int i;
-
- MatchToken( "(" );
-
- for (i = 0 ; i < z ; i++) {
- Parse2DMatrix (y, x, m + i * x*y);
- }
-
- MatchToken( ")" );
- }
-
-
- void Write1DMatrix (FILE *f, int x, vec_t *m) {
- int i;
-
- fprintf (f, "( ");
- for (i = 0 ; i < x ; i++) {
- if (m[i] == (int)m[i] ) {
- fprintf (f, "%i ", (int)m[i]);
- } else {
- fprintf (f, "%f ", m[i]);
- }
- }
- fprintf (f, ")");
- }
-
- void Write2DMatrix (FILE *f, int y, int x, vec_t *m) {
- int i;
-
- fprintf (f, "( ");
- for (i = 0 ; i < y ; i++) {
- Write1DMatrix (f, x, m + i*x);
- fprintf (f, " ");
- }
- fprintf (f, ")\n");
- }
-
-
- void Write3DMatrix (FILE *f, int z, int y, int x, vec_t *m) {
- int i;
-
- fprintf (f, "(\n");
- for (i = 0 ; i < z ; i++) {
- Write2DMatrix (f, y, x, m + i*(x*y) );
- }
- fprintf (f, ")\n");
- }
-
-