1 files changed, 182 insertions, 0 deletions
diff --git a/saga/resfile.cpp b/saga/resfile.cpp
new file mode 100644
index 0000000000..12b0a88c33
--- /dev/null
+++ b/saga/resfile.cpp
@@ -0,0 +1,182 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2003 The ScummVM project
+ *
+ * This program 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.
+
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+
+#include "common/file.h"
+
+#include "saga.h"
+
+#include "resfile.h"
+#include "binread.h"
+
+
+ResourceFile::ResourceFile() {
+
+	_resTblOffset = 0;
+	_resTblCt     = 0;
+	_resTblLoaded = false;
+	_resTbl       = NULL;
+}
+
+ResourceFile::~ResourceFile() {
+
+	close();
+}
+
+bool
+ResourceFile::open( const char *filename, const char *directory ) {
+
+	byte * temp_tbl;
+	uint32 tbl_len;
+
+	if( !File::open( filename, directory )) {
+		return false;
+	}
+
+	/* Seek to end of file to read resource table 'trailer' */
+	_file_len = size();
+
+	seek( _file_len - RSC_TABLEINFO_SIZE, SEEK_SET );
+
+	_resTblOffset = readSint32LE();
+	_resTblCt     = readSint32LE();
+
+	/* Check for sane values */
+	if( _resTblOffset != _file_len - RSC_TABLEINFO_SIZE - 
+		(RSC_TABLEENTRY_SIZE * _resTblCt)) {
+		return false;
+	}
+	
+	/* Load resource table */
+	_resTbl = new Resource[_resTblCt];
+
+	seek( _resTblOffset, SEEK_SET );
+
+	tbl_len = _resTblCt * RSC_TABLEENTRY_SIZE;
+	temp_tbl = new byte[tbl_len];
+
+	if( read( temp_tbl, tbl_len ) != tbl_len ) {
+		delete [] _resTbl;
+		delete [] temp_tbl;
+		return false;
+	}
+
+	BinReader bread( temp_tbl, tbl_len );
+
+	for( int i = 0 ; i < _resTblCt ; i++ ) {
+		
+		_resTbl[i].res_offset = bread.readSint32LE();
+		_resTbl[i].res_len    = bread.readSint32LE();
+	}
+
+	delete [] temp_tbl;
+
+	_resTblLoaded = true;
+
+	return true;
+}
+
+
+void ResourceFile::close() {
+
+	if( _resTblLoaded ) {
+		delete [] _resTbl;
+		_resTblLoaded = false;
+		_resTbl = NULL;
+	}
+
+	_resTblOffset = 0;
+	_resTblCt = 0;
+
+	if( File::isOpen() ) {
+		File::close();
+	}
+}
+
+int32 ResourceFile::getResourceCt() {
+
+	return (_resTblLoaded) ? _resTblCt : -1;
+}
+
+int32 ResourceFile::getResourceOffset( int32 rn ) {
+
+	if (!R_PBOUNDS( rn, _resTblCt )) {
+		return -1;
+	}
+
+	return _resTbl[rn].res_offset;
+}
+
+int32 ResourceFile::getResourceLen( int32 rn ) {
+
+	if (!R_PBOUNDS( rn, _resTblCt )) {
+		return -1;
+	}
+
+	return _resTbl[rn].res_len;
+}
+
+bool ResourceFile::loadResource( int32 rn, byte **res, int32 *res_len ) {
+	
+	byte *new_res;
+	uint32 new_res_len;
+
+	assert( res != NULL && res_len != NULL );
+	*res = NULL;
+	*res_len = NULL;
+
+	if( !R_PBOUNDS( rn, _resTblCt )) {
+		return false;
+	}
+
+	new_res_len = _resTbl[rn].res_len;
+	new_res = new byte[ new_res_len ];
+	if( !new_res ) {
+		return false;
+	}
+
+	seek( _resTbl[rn].res_offset, SEEK_SET );
+
+	if( read( new_res, new_res_len ) != new_res_len ) {
+		delete [] new_res;
+		return false;
+	}
+
+	*res = new_res;
+	*res_len = new_res_len;
+		
+	return true;
+}
+
+void ResourceFile::freeResource( byte *res ) {
+
+	delete [] res;
+}
+
+
+
+
+
+
+
+
+
+
+