mirror of
https://github.com/UberGames/GtkRadiant.git
synced 2024-12-12 21:32:18 +00:00
299 lines
6.1 KiB
C
299 lines
6.1 KiB
C
/*
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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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 GtkRadiant; 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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// scriplib.c
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#include "cmdlib.h"
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#include "inout.h"
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#include "scriplib.h"
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/*
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=============================================================================
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PARSING STUFF
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=============================================================================
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*/
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typedef struct
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{
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char filename[1024];
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char *buffer,*script_p,*end_p;
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int line;
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} script_t;
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#define MAX_INCLUDES 8
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script_t scriptstack[MAX_INCLUDES];
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script_t *script;
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int scriptline;
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char token[MAXTOKEN];
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qboolean endofscript;
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qboolean tokenready; // only true if UnGetToken was just called
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/*
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==============
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AddScriptToStack
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==============
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*/
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void AddScriptToStack( char *filename ){
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int size;
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script++;
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if ( script == &scriptstack[MAX_INCLUDES] ) {
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Error( "script file exceeded MAX_INCLUDES" );
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}
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strcpy( script->filename, ExpandPath( filename ) );
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size = LoadFile( script->filename, (void **)&script->buffer );
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printf( "entering %s\n", script->filename );
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script->line = 1;
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script->script_p = script->buffer;
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script->end_p = script->buffer + size;
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}
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/*
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==============
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LoadScriptFile
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==============
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*/
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void LoadScriptFile( char *filename ){
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script = scriptstack;
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AddScriptToStack( filename );
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endofscript = false;
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tokenready = false;
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}
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/*
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==============
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ParseFromMemory
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==============
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*/
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void ParseFromMemory( char *buffer, int size ){
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script = scriptstack;
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script++;
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if ( script == &scriptstack[MAX_INCLUDES] ) {
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Error( "script file exceeded MAX_INCLUDES" );
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}
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strcpy( script->filename, "memory buffer" );
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script->buffer = buffer;
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script->line = 1;
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script->script_p = script->buffer;
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script->end_p = script->buffer + size;
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endofscript = false;
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tokenready = false;
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}
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/*
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==============
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UnGetToken
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Signals that the current token was not used, and should be reported
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for the next GetToken. Note that
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GetToken (true);
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UnGetToken ();
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GetToken (false);
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could cross a line boundary.
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==============
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*/
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void UnGetToken( void ){
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tokenready = true;
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}
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qboolean EndOfScript( qboolean crossline ){
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if ( !crossline ) {
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Error( "Line %i is incomplete\n",scriptline );
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}
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if ( !strcmp( script->filename, "memory buffer" ) ) {
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endofscript = true;
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return false;
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}
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free( script->buffer );
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if ( script == scriptstack + 1 ) {
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endofscript = true;
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return false;
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}
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script--;
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scriptline = script->line;
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printf( "returning to %s\n", script->filename );
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return GetToken( crossline );
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}
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/*
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==============
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GetToken
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==============
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*/
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qboolean GetToken( qboolean crossline ){
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char *token_p;
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if ( tokenready ) { // is a token allready waiting?
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tokenready = false;
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return true;
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}
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if ( script->script_p >= script->end_p ) {
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return EndOfScript( crossline );
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}
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//
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// skip space
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//
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skipspace:
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while ( *script->script_p <= 32 )
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{
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if ( script->script_p >= script->end_p ) {
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return EndOfScript( crossline );
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}
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if ( *script->script_p++ == '\n' ) {
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if ( !crossline ) {
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Error( "Line %i is incomplete\n",scriptline );
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}
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scriptline = script->line++;
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}
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}
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if ( script->script_p >= script->end_p ) {
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return EndOfScript( crossline );
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}
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// ; # // comments
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if ( *script->script_p == ';' || *script->script_p == '#'
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|| ( script->script_p[0] == '/' && script->script_p[1] == '/' ) ) {
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if ( !crossline ) {
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Error( "Line %i is incomplete\n",scriptline );
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}
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while ( *script->script_p++ != '\n' )
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if ( script->script_p >= script->end_p ) {
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return EndOfScript( crossline );
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}
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goto skipspace;
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}
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// /* */ comments
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if ( script->script_p[0] == '/' && script->script_p[1] == '*' ) {
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if ( !crossline ) {
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Error( "Line %i is incomplete\n",scriptline );
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}
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script->script_p += 2;
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while ( script->script_p[0] != '*' && script->script_p[1] != '/' )
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{
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script->script_p++;
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if ( script->script_p >= script->end_p ) {
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return EndOfScript( crossline );
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}
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}
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script->script_p += 2;
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goto skipspace;
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}
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//
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// copy token
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//
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token_p = token;
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if ( *script->script_p == '"' ) {
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// quoted token
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script->script_p++;
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while ( *script->script_p != '"' )
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{
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*token_p++ = *script->script_p++;
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if ( script->script_p == script->end_p ) {
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break;
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}
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if ( token_p == &token[MAXTOKEN] ) {
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Error( "Token too large on line %i\n",scriptline );
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}
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}
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script->script_p++;
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}
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else{ // regular token
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while ( *script->script_p > 32 && *script->script_p != ';' )
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{
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*token_p++ = *script->script_p++;
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if ( script->script_p == script->end_p ) {
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break;
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}
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if ( token_p == &token[MAXTOKEN] ) {
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Error( "Token too large on line %i\n",scriptline );
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}
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}
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}
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*token_p = 0;
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if ( !strcmp( token, "$include" ) ) {
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GetToken( false );
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AddScriptToStack( token );
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return GetToken( crossline );
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}
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return true;
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}
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/*
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==============
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TokenAvailable
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Returns true if there is another token on the line
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==============
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*/
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qboolean TokenAvailable( void ){
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char *search_p;
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search_p = script->script_p;
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if ( search_p >= script->end_p ) {
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return false;
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}
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while ( *search_p <= 32 )
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{
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if ( *search_p == '\n' ) {
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return false;
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}
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search_p++;
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if ( search_p == script->end_p ) {
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return false;
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}
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}
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if ( *search_p == ';' ) {
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return false;
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}
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return true;
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}
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