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- // scriplib.c
-
- #include "cmdlib.h"
- #include "scriplib.h"
-
- /*
- =============================================================================
-
- PARSING STUFF
-
- =============================================================================
- */
-
- char token[MAXTOKEN];
- char *scriptbuffer,*script_p,*scriptend_p;
- int grabbed;
- int scriptline;
- qboolean endofscript;
- qboolean tokenready; // only true if UnGetToken was just called
-
- /*
- ==============
- =
- = LoadScriptFile
- =
- ==============
- */
-
- void LoadScriptFile (char *filename)
- {
- int size;
-
- size = LoadFile (filename, (void **)&scriptbuffer);
-
- script_p = scriptbuffer;
- scriptend_p = script_p + size;
- scriptline = 1;
- endofscript = false;
- tokenready = false;
- }
-
-
- /*
- ==============
- =
- = UnGetToken
- =
- = Signals that the current token was not used, and should be reported
- = for the next GetToken. Note that
-
- GetToken (true);
- UnGetToken ();
- GetToken (false);
-
- = could cross a line boundary.
- =
- ==============
- */
-
- void UnGetToken (void)
- {
- tokenready = true;
- }
-
-
- /*
- ==============
- GetToken
- ==============
- */
- qboolean GetToken (qboolean crossline)
- {
- char *token_p;
-
- if (tokenready) // is a token allready waiting?
- {
- tokenready = false;
- return true;
- }
-
- if (script_p >= scriptend_p)
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- endofscript = true;
- return false;
- }
-
- //
- // skip space
- //
- skipspace:
- while (*script_p <= 32)
- {
- if (script_p >= scriptend_p)
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- endofscript = true;
- return true;
- }
- if (*script_p++ == '\n')
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- scriptline++;
- }
- }
-
- if (script_p >= scriptend_p)
- {
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- endofscript = true;
- return true;
- }
-
- if (*script_p == ';' || *script_p == '#') // semicolon is comment field
- { // also make # a comment field
- if (!crossline)
- Error ("Line %i is incomplete\n",scriptline);
- while (*script_p++ != '\n')
- if (script_p >= scriptend_p)
- {
- endofscript = true;
- return false;
- }
- goto skipspace;
- }
-
- //
- // copy token
- //
- token_p = token;
-
- while ( *script_p > 32 && *script_p != ';')
- {
- *token_p++ = *script_p++;
- if (script_p == scriptend_p)
- break;
- if (token_p == &token[MAXTOKEN])
- Error ("Token too large on line %i\n",scriptline);
- }
-
- *token_p = 0;
- return true;
- }
-
-
- /*
- ==============
- =
- = TokenAvailable
- =
- = Returns true if there is another token on the line
- =
- ==============
- */
-
- qboolean TokenAvailable (void)
- {
- char *search_p;
-
- search_p = script_p;
-
- if (search_p >= scriptend_p)
- return false;
-
- while ( *search_p <= 32)
- {
- if (*search_p == '\n')
- return false;
- search_p++;
- if (search_p == scriptend_p)
- return false;
-
- }
-
- if (*search_p == ';')
- return false;
-
- return true;
- }
-
-
-