mirror of
https://github.com/UberGames/GtkRadiant.git
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9998050654
git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@183 8a3a26a2-13c4-0310-b231-cf6edde360e5
297 lines
5.8 KiB
C
297 lines
5.8 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 UnGetScriptToken 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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{
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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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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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{
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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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{
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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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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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UnGetScriptToken
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Signals that the current token was not used, and should be reported
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for the next GetScriptToken. Note that
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GetScriptToken (true);
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UnGetScriptToken ();
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GetScriptToken (false);
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could cross a line boundary.
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==============
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*/
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void UnGetScriptToken (void)
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{
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tokenready = true;
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}
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qboolean EndOfScript (qboolean crossline)
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{
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if (!crossline)
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Error ("Line %i is incomplete\n",scriptline);
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if (!strcmp (script->filename, "memory buffer"))
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{
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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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{
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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 GetScriptToken (crossline);
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}
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/*
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==============
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GetScriptToken
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==============
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*/
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qboolean GetScriptToken (qboolean crossline)
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{
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char *token_p;
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if (tokenready) // is a token allready waiting?
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{
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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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// 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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if (*script->script_p++ == '\n')
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{
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if (!crossline)
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Error ("Line %i is incomplete\n",scriptline);
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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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// ; # // 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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{
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if (!crossline)
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Error ("Line %i is incomplete\n",scriptline);
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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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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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{
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if (!crossline)
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Error ("Line %i is incomplete\n",scriptline);
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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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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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{
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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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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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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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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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*token_p = 0;
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if (!strcmp (token, "$include"))
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{
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GetScriptToken (false);
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AddScriptToStack (token);
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return GetScriptToken (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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ScriptTokenAvailable
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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 ScriptTokenAvailable (void)
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{
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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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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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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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if (*search_p == ';')
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return false;
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return true;
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}
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