warzone2100/lib/framework/resource_parser.y

/*
	This file is part of Warzone 2100.
	Copyright (C) 1999-2004  Eidos Interactive
	Copyright (C) 2005-2010  Warzone 2100 Project

	Warzone 2100 is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	Warzone 2100 is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with Warzone 2100; if not, write to the Free Software
	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
%{
/** @file
 *
 *  Parser for RES (*.wrf) files
 */

extern int res_lex(void);
extern int res_get_lineno(void);
extern char* res_get_text(void);

/* Allow frame header files to be singly included */
#define FRAME_LIB_INCLUDE

#include "lib/framework/frame.h"
#include <string.h>
#include <stdlib.h>

#include "lib/framework/string_ext.h"
#include "lib/framework/frameresource.h"
#include "lib/framework/resly.h"

extern void yyerror(const char* msg);
void yyerror(const char* msg)
{
	debug(LOG_ERROR, "RES file parse error:\n%s at line %d\nText: '%s'\n", msg, res_get_lineno(), res_get_text());
}

%}

%name-prefix="res_"

%union {
	char  *sval;
}

	/* value tokens */
%token <sval> TEXT_T
%token <sval> QTEXT_T			/* Text with double quotes surrounding it */

%destructor {
#ifndef WZ_OS_WIN
	// Force type checking by the compiler
	char * const s = $$;

	if (s)
		free(s);
#endif
} TEXT_T QTEXT_T

	/* keywords */
%token DIRECTORY
%token FILETOKEN

%%

res_file:			res_line
				|	res_file res_line
				;

res_line:			dir_line
				|	file_line
				;

dir_line:			DIRECTORY QTEXT_T
				{
					UDWORD len;

					// set a new input directory
					debug(LOG_NEVER, "directory: %s", $2);
					if (strncmp($2, "/:", strlen("/:")) == 0)
					{
						// the new dir is rooted
						sstrcpy(aCurrResDir, $2);
					}
					else
					{
						sstrcpy(aCurrResDir, aResDir);
						sstrcat(aCurrResDir, $2);
					}
					if (strlen($2) > 0)
					{
						// Add a trailing '/'
						len = strlen(aCurrResDir);
						aCurrResDir[len] = '/';
						aCurrResDir[len+1] = 0;
						debug(LOG_NEVER, "Current resource directory: %s", aCurrResDir);
					}
					free($2);
				}
				;


file_line:			FILETOKEN TEXT_T QTEXT_T
				{
					bool succes;
					/* load a data file */
					debug(LOG_NEVER, "file: %s %s", $2, $3);
					succes = resLoadFile($2, $3);
					free($2);
					free($3);

					if (!succes)
					{
						YYABORT;
					}
				}
				;