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/*
* Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
* 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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#include "config.h"
#include <errno.h>
#import "OFTarArchive.h"
#import "OFTarArchiveEntry.h"
#import "OFTarArchiveEntry+Private.h"
#import "OFArchiveURIHandler.h"
#import "OFArchiveIRIHandler.h"
#import "OFDate.h"
#import "OFSeekableStream.h"
#import "OFStream.h"
#import "OFURI.h"
#import "OFURIHandler.h"
#import "OFIRI.h"
#import "OFIRIHandler.h"
#import "OFSeekableStream.h"
#import "OFStream.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFNotOpenException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"
#import "OFWriteFailedException.h"
enum {
modeRead,
modeWrite,
modeAppend
};
OF_DIRECT_MEMBERS
@interface OFTarArchiveFileReadStream: OFStream <OFReadyForReadingObserving>
{
OFTarArchive *_archive;
OFTarArchiveEntry *_entry;
OFStream *_stream;
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@synthesize encoding = _encoding;
+ (instancetype)archiveWithStream: (OFStream *)stream mode: (OFString *)mode
{
return [[[self alloc] initWithStream: stream mode: mode] autorelease];
}
+ (instancetype)archiveWithURI: (OFURI *)URI mode: (OFString *)mode
+ (instancetype)archiveWithIRI: (OFIRI *)IRI mode: (OFString *)mode
{
return [[[self alloc] initWithURI: URI mode: mode] autorelease];
return [[[self alloc] initWithIRI: IRI mode: mode] autorelease];
}
+ (OFURI *)URIForFilePath: (OFString *)path inArchiveWithURI: (OFURI *)URI
+ (OFIRI *)IRIForFilePath: (OFString *)path inArchiveWithIRI: (OFIRI *)IRI
{
return OFArchiveURIHandlerURIForFileInArchive(@"tar", path, URI);
return OFArchiveIRIHandlerIRIForFileInArchive(@"tar", path, IRI);
}
- (instancetype)init
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithStream: (OFStream *)stream mode: (OFString *)mode
{
self = [super init];
@try {
_stream = [stream retain];
if ([mode isEqual: @"r"])
_mode = OFTarArchiveModeRead;
_mode = modeRead;
else if ([mode isEqual: @"w"])
_mode = OFTarArchiveModeWrite;
_mode = modeWrite;
else if ([mode isEqual: @"a"])
_mode = OFTarArchiveModeAppend;
_mode = modeAppend;
else
@throw [OFInvalidArgumentException exception];
if (_mode == OFTarArchiveModeAppend) {
if (_mode == modeAppend) {
uint32_t buffer[1024 / sizeof(uint32_t)];
bool empty = true;
if (![_stream isKindOfClass: [OFSeekableStream class]])
@throw [OFInvalidArgumentException exception];
[(OFSeekableStream *)_stream seekToOffset: -1024
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[self release];
@throw e;
}
return self;
}
- (instancetype)initWithURI: (OFURI *)URI mode: (OFString *)mode
- (instancetype)initWithIRI: (OFIRI *)IRI mode: (OFString *)mode
{
void *pool = objc_autoreleasePoolPush();
OFStream *stream;
@try {
if ([mode isEqual: @"a"])
stream = [OFURIHandler openItemAtURI: URI mode: @"r+"];
stream = [OFIRIHandler openItemAtIRI: IRI mode: @"r+"];
else
stream = [OFURIHandler openItemAtURI: URI mode: mode];
stream = [OFIRIHandler openItemAtIRI: IRI mode: mode];
} @catch (id e) {
[self release];
@throw e;
}
self = [self initWithStream: stream mode: mode];
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}
- (OFTarArchiveEntry *)nextEntry
{
uint32_t buffer[512 / sizeof(uint32_t)];
bool empty = true;
if (_mode != OFTarArchiveModeRead)
if (_mode != modeRead)
@throw [OFInvalidArgumentException exception];
if (_currentEntry != nil && _lastReturnedStream == nil) {
/*
* No read stream was created since the last call to
* -[nextEntry]. Create it so that we can properly skip the
* data.
*/
void *pool = objc_autoreleasePoolPush();
[self streamForReadingCurrentEntry];
objc_autoreleasePoolPop(pool);
}
[_currentEntry release];
_currentEntry = nil;
[(OFTarArchiveFileReadStream *)_lastReturnedStream of_skip];
@try {
[_lastReturnedStream close];
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encoding: _encoding];
return _currentEntry;
}
- (OFStream *)streamForReadingCurrentEntry
{
if (_mode != OFTarArchiveModeRead)
if (_mode != modeRead)
@throw [OFInvalidArgumentException exception];
if (_currentEntry == nil)
@throw [OFInvalidArgumentException exception];
_lastReturnedStream = [[[OFTarArchiveFileReadStream alloc]
of_initWithArchive: self
stream: _stream
entry: _currentEntry] autorelease];
[_currentEntry release];
_currentEntry = nil;
return _lastReturnedStream;
}
- (OFStream *)streamForWritingEntry: (OFTarArchiveEntry *)entry
{
if (_mode != OFTarArchiveModeWrite && _mode != OFTarArchiveModeAppend)
if (_mode != modeWrite && _mode != modeAppend)
@throw [OFInvalidArgumentException exception];
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
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@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
_lastReturnedStream = nil;
if (_mode == OFTarArchiveModeWrite || _mode == OFTarArchiveModeAppend) {
if (_mode == modeWrite || _mode == modeAppend) {
char buffer[1024];
memset(buffer, '\0', 1024);
[_stream writeBuffer: buffer length: 1024];
}
[_stream release];
_stream = nil;
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{
if (_stream == nil)
@throw [OFNotOpenException exceptionWithObject: self];
return _atEndOfStream;
}
- (bool)hasDataInReadBuffer
- (bool)lowlevelHasDataInReadBuffer
{
return (super.hasDataInReadBuffer || _stream.hasDataInReadBuffer);
return _stream.hasDataInReadBuffer;
}
- (int)fileDescriptorForReading
{
return ((id <OFReadyForReadingObserving>)_stream)
.fileDescriptorForReading;
}
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