ObjFW  Artifact [7c51ea7ed3]

Artifact 7c51ea7ed3682ac11a1b251aabdf10d0d70de488214659da09d6607f8f779d26:

• File src/OFSeekableStream.m — part of check-in [d101b6f8b4] at 2013-08-12 13:26:40 on branch trunk — Fix OFSeekableStream.

  -[seekToOffset:whence:] now works correctly when whence is SEEK_CUR.
  Additionally, the new offset is returned now. (user: js, size: 1110) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#include <stdlib.h>
#include <stdio.h>

#import "OFSeekableStream.h"

@implementation OFSeekableStream
- (off_t)lowlevelSeekToOffset: (off_t)offset
		       whence: (int)whence
{
	[self doesNotRecognizeSelector: _cmd];
	abort();
}

- (off_t)seekToOffset: (off_t)offset
	       whence: (int)whence
{
	if (whence == SEEK_CUR)
		offset -= _readBufferLength;

	offset = [self lowlevelSeekToOffset: offset
				     whence: whence];

	[self freeMemory: _readBuffer];
	_readBuffer = NULL;
	_readBufferLength = 0;

	return offset;
}
@end