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*
* 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.
*/
#define OF_LHA_ARCHIVE_M
#include "config.h"
#include <errno.h>
#import "OFLHAArchive.h"
#import "OFLHAArchiveEntry.h"
#import "OFLHAArchiveEntry+Private.h"
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modeWrite,
modeAppend
};
OF_DIRECT_MEMBERS
@interface OFLHAArchiveFileReadStream: OFStream <OFReadyForReadingObserving>
{
OFLHAArchive *_archive;
OFStream *_stream, *_decompressedStream;
OFLHAArchiveEntry *_entry;
unsigned long long _toRead;
uint16_t _CRC16;
bool _atEndOfStream, _skipped;
}
- (instancetype)of_initWithStream: (OFStream *)stream
entry: (OFLHAArchiveEntry *)entry;
- (instancetype)of_initWithArchive: (OFLHAArchive *)archive
stream: (OFStream *)stream
entry: (OFLHAArchiveEntry *)entry;
- (void)of_skip;
@end
OF_DIRECT_MEMBERS
@interface OFLHAArchiveFileWriteStream: OFStream <OFReadyForWritingObserving>
{
OFLHAArchive *_archive;
OFMutableLHAArchiveEntry *_entry;
OFStringEncoding _encoding;
OFSeekableStream *_stream;
OFStreamOffset _headerOffset;
uint32_t _bytesWritten;
uint16_t _CRC16;
}
- (instancetype)of_initWithArchive: (OFLHAArchive *)archive
- (instancetype)of_initWithStream: (OFSeekableStream *)stream
entry: (OFLHAArchiveEntry *)entry
encoding: (OFStringEncoding)encoding;
stream: (OFSeekableStream *)stream
entry: (OFLHAArchiveEntry *)entry
encoding: (OFStringEncoding)encoding;
@end
@implementation OFLHAArchive
@synthesize encoding = _encoding;
+ (instancetype)archiveWithStream: (OFStream *)stream mode: (OFString *)mode
{
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}
- (void)dealloc
{
if (_stream != nil)
[self close];
[_currentEntry release];
[super dealloc];
}
- (OFLHAArchiveEntry *)nextEntry
{
OFLHAArchiveEntry *entry;
char header[21];
size_t headerLen;
if (_mode != modeRead)
@throw [OFInvalidArgumentException exception];
[_currentEntry release];
_currentEntry = nil;
[(OFLHAArchiveFileReadStream *)_lastReturnedStream of_skip];
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
for (headerLen = 0; headerLen < 21;) {
if (_stream.atEndOfStream) {
if (headerLen == 0)
return nil;
if (headerLen == 1 && header[0] == 0)
return nil;
@throw [OFTruncatedDataException exception];
}
headerLen += [_stream readIntoBuffer: header + headerLen
length: 21 - headerLen];
}
entry = [[[OFLHAArchiveEntry alloc]
_currentEntry= [[OFLHAArchiveEntry alloc]
of_initWithHeader: header
stream: _stream
encoding: _encoding] autorelease];
encoding: _encoding];
_lastReturnedStream = [[OFLHAArchiveFileReadStream alloc]
of_initWithStream: _stream
entry: entry];
return entry;
return _currentEntry;
}
- (OFStream *)streamForReadingCurrentEntry
{
if (_mode != modeRead)
@throw [OFInvalidArgumentException exception];
if (_lastReturnedStream == nil)
if (_currentEntry == nil)
@throw [OFInvalidArgumentException exception];
return [[(OFLHAArchiveFileReadStream *)_lastReturnedStream
retain] autorelease];
_lastReturnedStream = [[[OFLHAArchiveFileReadStream alloc]
of_initWithArchive: self
stream: _stream
entry: _currentEntry] autorelease];
[_currentEntry release];
_currentEntry = nil;
return _lastReturnedStream;
}
- (OFStream *)streamForWritingEntry: (OFLHAArchiveEntry *)entry
{
OFString *compressionMethod;
if (_mode != modeWrite && _mode != modeAppend)
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object: self];
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
_lastReturnedStream = [[OFLHAArchiveFileWriteStream alloc]
of_initWithStream: (OFSeekableStream *)_stream
entry: entry
encoding: _encoding];
_lastReturnedStream = [[[OFLHAArchiveFileWriteStream alloc]
of_initWithArchive: self
stream: (OFSeekableStream *)_stream
entry: entry
encoding: _encoding] autorelease];
return [[(OFLHAArchiveFileWriteStream *)_lastReturnedStream
return _lastReturnedStream;
retain] autorelease];
}
- (void)close
{
if (_stream == nil)
@throw [OFNotOpenException exceptionWithObject: self];
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
[_stream release];
_stream = nil;
}
@end
@implementation OFLHAArchiveFileReadStream
- (instancetype)of_initWithStream: (OFStream *)stream
entry: (OFLHAArchiveEntry *)entry
- (instancetype)of_initWithArchive: (OFLHAArchive *)archive
stream: (OFStream *)stream
entry: (OFLHAArchiveEntry *)entry
{
self = [super init];
@try {
OFString *compressionMethod;
_archive = [archive retain];
_stream = [stream retain];
compressionMethod = entry.compressionMethod;
if ([compressionMethod isEqual: @"-lh4-"] ||
[compressionMethod isEqual: @"-lh5-"])
_decompressedStream = [[OFLHADecompressingStream alloc]
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- (void)dealloc
{
if (_stream != nil || _decompressedStream != nil)
[self close];
[_entry release];
if (_archive->_lastReturnedStream == self)
_archive->_lastReturnedStream = nil;
[_archive release];
[super dealloc];
}
- (bool)lowlevelIsAtEndOfStream
{
if (_stream == nil)
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_decompressedStream = nil;
[super close];
}
@end
@implementation OFLHAArchiveFileWriteStream
- (instancetype)of_initWithArchive: (OFLHAArchive *)archive
- (instancetype)of_initWithStream: (OFSeekableStream *)stream
entry: (OFLHAArchiveEntry *)entry
encoding: (OFStringEncoding)encoding
stream: (OFSeekableStream *)stream
entry: (OFLHAArchiveEntry *)entry
encoding: (OFStringEncoding)encoding
{
self = [super init];
@try {
_archive = [archive retain];
_entry = [entry mutableCopy];
_encoding = encoding;
_headerOffset = [stream seekToOffset: 0 whence: OFSeekCurrent];
[_entry of_writeToStream: stream encoding: _encoding];
/*
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- (void)dealloc
{
if (_stream != nil)
[self close];
[_entry release];
if (_archive->_lastReturnedStream == self)
_archive->_lastReturnedStream = nil;
[_archive release];
[super dealloc];
}
- (size_t)lowlevelWriteBuffer: (const void *)buffer length: (size_t)length
{
if (_stream == nil)
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