ObjFW  Artifact [81b4e6d457]

Artifact 81b4e6d457bcc0480812b828a5058fe73b87b9328644faf89352e9a671feb814:

• File src/exceptions/OFReadOrWriteFailedException.m — part of check-in [3d16a30f41] at 2013-06-22 12:12:36 on branch trunk — Rework exceptions. This mostly removes the argument for the class in which the exception occurred. As backtraces were recently added for all platforms, the passed class does not give any extra information on where the exception occurred anymore. This also removes a few other arguments which were not too helpful. In the past, the idea was to pass as many arguments as possible so that it is easier to find the origin of the exception. However, as backtraces are a much better way to find the origin, those are not useful anymore and just make the exception more cumbersome to use. The rule is now to only pass arguments that might help in recovering from the exception or provide information that is otherwise not easily accessible. (user: js size: 1850)

/*
 * 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>

#import "OFReadOrWriteFailedException.h"
#import "OFString.h"
#ifdef OF_HAVE_SOCKETS
# import "OFStreamSocket.h"
#endif

#import "common.h"

@implementation OFReadOrWriteFailedException
+ (instancetype)exceptionWithStream: (OFStream*)stream
		    requestedLength: (size_t)requestedLength
{
	return [[[self alloc] initWithStream: stream
			     requestedLength: requestedLength] autorelease];
}

- init
{
	@try {
		[self doesNotRecognizeSelector: _cmd];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	abort();
}

-  initWithStream: (OFStream*)stream
  requestedLength: (size_t)requestedLength
{
	self = [super init];

	_stream = [stream retain];
	_requestedLength = requestedLength;

#ifdef OF_HAVE_SOCKETS
	if ([stream isKindOfClass: [OFStreamSocket class]])
		_errNo = GET_SOCK_ERRNO;
	else
#endif
		_errNo = GET_ERRNO;

	return self;
}

- (void)dealloc
{
	[_stream release];

	[super dealloc];
}

- (OFString*)description
{
	return [OFString stringWithFormat:
	    @"Failed to read or write %zu bytes in a stream of type "
	    @"%@! " ERRFMT, _requestedLength, [_stream class], ERRPARAM];
}

- (OFStream*)stream
{
	OF_GETTER(_stream, false)
}

- (size_t)requestedLength
{
	return _requestedLength;
}

- (int)errNo
{
	return _errNo;
}
@end