Method ReadFile

neo/framework/FileSystem.cpp:1029–1126

============ idFileSystemLocal::ReadFile Filename are relative to the search path a null buffer will just return the file length and time without loading timestamp can be NULL if not required ============ */

============
*/
int idFileSystemLocal::ReadFile( const char *relativePath, void **buffer, ID_TIME_T *timestamp ) {
	idFile *	f;
	byte *		buf;
	int			len;
	bool		isConfig;

	if ( !searchPaths ) {
		common->FatalError( "Filesystem call made without initialization\n" );
	}

	if ( !relativePath || !relativePath[0] ) {
		common->FatalError( "idFileSystemLocal::ReadFile with empty name\n" );
	}

	if ( timestamp ) {
		*timestamp = FILE_NOT_FOUND_TIMESTAMP;
	}

	if ( buffer ) {
		*buffer = NULL;
	}

	buf = NULL;	// quiet compiler warning

	// if this is a .cfg file and we are playing back a journal, read
	// it from the journal file
	if ( strstr( relativePath, ".cfg" ) == relativePath + strlen( relativePath ) - 4 ) {
		isConfig = true;
		if ( eventLoop && eventLoop->JournalLevel() == 2 ) {
			int		r;

			loadCount++;
			loadStack++;

			common->DPrintf( "Loading %s from journal file.\n", relativePath );
			len = 0;
			r = eventLoop->com_journalDataFile->Read( &len, sizeof( len ) );
			if ( r != sizeof( len ) ) {
				*buffer = NULL;
				return -1;
			}
			buf = (byte *)Mem_ClearedAlloc(len+1);
			*buffer = buf;
			r = eventLoop->com_journalDataFile->Read( buf, len );
			if ( r != len ) {
				common->FatalError( "Read from journalDataFile failed" );
			}

			// guarantee that it will have a trailing 0 for string operations
			buf[len] = 0;

			return len;
		}
	} else {
		isConfig = false;
	}

	// look for it in the filesystem or pack files