ObjFW  Artifact [943a2b61b5]

Artifact 943a2b61b586b959e94e32b465e9a141b928f0fab02a1cf8da7cfc989f651428:

• File src/OFSeekableStream.m — part of check-in [c509ecf6c7] at 2010-04-09 17:06:55 on branch trunk — Flush the write cache before seeking. (user: js, size: 1371) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008 - 2010
 *   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 included in
 * the packaging of this file.
 */

#import "OFSeekableStream.h"
#import "OFExceptions.h"

@implementation OFSeekableStream
- _seekToOffset: (off_t)offset
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (off_t)_seekForwardWithOffset: (off_t)offset
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- (off_t)_seekToOffsetRelativeToEnd: (off_t)offset
{
	@throw [OFNotImplementedException newWithClass: isa
					      selector: _cmd];
}

- seekToOffset: (off_t)offset
{
	[self flushWriteCache];
	[self _seekToOffset: offset];

	[self freeMemory: cache];
	cache = NULL;
	cache_len = 0;

	return self;
}

- (off_t)seekForwardWithOffset: (off_t)offset
{
	off_t ret;

	[self flushWriteCache];
	ret = [self _seekForwardWithOffset: offset - cache_len];

	[self freeMemory: cache];
	cache = NULL;
	cache_len = 0;

	return ret;
}

- (off_t)seekToOffsetRelativeToEnd: (off_t)offset
{
	off_t ret;

	[self flushWriteCache];
	ret = [self _seekToOffsetRelativeToEnd: offset];

	[self freeMemory: cache];
	cache = NULL;
	cache_len = 0;

	return ret;
}
@end