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/*
* Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
*
* 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.
*
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/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* 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.
*
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#import "OFChecksumMismatchException.h"
#import "OFInvalidArgumentException.h"
#import "OFNotImplementedException.h"
#import "OFNotOpenException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"
#import "OFWriteFailedException.h"
enum {
modeRead,
modeWrite,
modeAppend
};
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#import "OFChecksumMismatchException.h"
#import "OFInvalidArgumentException.h"
#import "OFNotImplementedException.h"
#import "OFNotOpenException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"
#import "OFUnsupportedVersionException.h"
#import "OFWriteFailedException.h"
enum {
modeRead,
modeWrite,
modeAppend
};
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@throw [OFTruncatedDataException exception];
}
headerLen += [_stream readIntoBuffer: header + headerLen
length: 21 - headerLen];
}
_currentEntry = [[OFLHAArchiveEntry alloc]
of_initWithHeader: header
stream: _stream
encoding: _encoding];
return _currentEntry;
}
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@throw [OFTruncatedDataException exception];
}
headerLen += [_stream readIntoBuffer: header + headerLen
length: 21 - headerLen];
}
/*
* Some archives have trailing garbage after the single byte 0
* termination. However, a level 2 header uses 2 bytes for the size, so
* could just have a header size that is a multiple of 256. Therefore,
* consider it only the end of the archive if what follows would not be
* a level 2 header.
*/
if (header[0] == 0 && header[20] != 2)
return nil;
_currentEntry = [[OFLHAArchiveEntry alloc]
of_initWithHeader: header
stream: _stream
encoding: _encoding];
return _currentEntry;
}
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distanceBits: 5
dictionaryBits: 16];
else if ([compressionMethod isEqual: @"-lh7-"])
_decompressedStream = [[OFLHADecompressingStream alloc]
of_initWithStream: stream
distanceBits: 5
dictionaryBits: 17];
else
_decompressedStream = [stream retain];
_entry = [entry copy];
_toRead = entry.uncompressedSize;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
if (_stream != nil || _decompressedStream != nil)
[self close];
[_entry release];
if (_archive->_lastReturnedStream == self)
_archive->_lastReturnedStream = nil;
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distanceBits: 5
dictionaryBits: 16];
else if ([compressionMethod isEqual: @"-lh7-"])
_decompressedStream = [[OFLHADecompressingStream alloc]
of_initWithStream: stream
distanceBits: 5
dictionaryBits: 17];
else if ([compressionMethod isEqual: @"-lh0-"] ||
[compressionMethod isEqual: @"-lhd-"])
_decompressedStream = [stream retain];
else
@throw [OFUnsupportedVersionException
exceptionWithVersion: compressionMethod];
_entry = [entry copy];
_toRead = entry.uncompressedSize;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
if (_stream != nil && _decompressedStream != nil)
[self close];
[_entry release];
if (_archive->_lastReturnedStream == self)
_archive->_lastReturnedStream = nil;
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