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- (instancetype)of_initWithStream: (OFStream *)stream
entry: (OFTarArchiveEntry *)entry;
@end
@implementation OFTarArchive: OFObject
@synthesize encoding = _encoding;
+ (instancetype)archiveWithStream: (OFStream *)stream
mode: (OFString *)mode
{
return [[[self alloc] initWithStream: stream
mode: mode] autorelease];
}
#ifdef OF_HAVE_FILES
+ (instancetype)archiveWithPath: (OFString *)path
mode: (OFString *)mode
{
return [[[self alloc] initWithPath: path
mode: mode] autorelease];
}
#endif
- (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 = OF_TAR_ARCHIVE_MODE_READ;
else if ([mode isEqual: @"w"])
_mode = OF_TAR_ARCHIVE_MODE_WRITE;
else if ([mode isEqual: @"a"])
_mode = OF_TAR_ARCHIVE_MODE_APPEND;
else
@throw [OFInvalidArgumentException exception];
if (_mode == OF_TAR_ARCHIVE_MODE_APPEND) {
uint32_t buffer[1024 / sizeof(uint32_t)];
bool empty = true;
if (![_stream isKindOfClass: [OFSeekableStream class]])
@throw [OFInvalidArgumentException exception];
[(OFSeekableStream *)_stream seekToOffset: -1024
whence: SEEK_END];
[_stream readIntoBuffer: buffer
exactLength: 1024];
for (size_t i = 0; i < 1024 / sizeof(uint32_t); i++)
if (buffer[i] != 0)
empty = false;
if (!empty)
@throw [OFInvalidFormatException exception];
[(OFSeekableStream *)stream seekToOffset: -1024
whence: SEEK_END];
}
_encoding = OF_STRING_ENCODING_UTF_8;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
#ifdef OF_HAVE_FILES
- (instancetype)initWithPath: (OFString *)path
mode: (OFString *)mode
{
OFFile *file;
if ([mode isEqual: @"a"])
file = [[OFFile alloc] initWithPath: path
mode: @"r+"];
else
file = [[OFFile alloc] initWithPath: path
mode: mode];
@try {
self = [self initWithStream: file
mode: mode];
} @finally {
[file release];
}
return self;
}
#endif
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- (instancetype)of_initWithStream: (OFStream *)stream
entry: (OFTarArchiveEntry *)entry;
@end
@implementation OFTarArchive: OFObject
@synthesize encoding = _encoding;
+ (instancetype)archiveWithStream: (OFStream *)stream mode: (OFString *)mode
{
return [[[self alloc] initWithStream: stream mode: mode] autorelease];
}
#ifdef OF_HAVE_FILES
+ (instancetype)archiveWithPath: (OFString *)path mode: (OFString *)mode
{
return [[[self alloc] initWithPath: path mode: mode] autorelease];
}
#endif
- (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;
else if ([mode isEqual: @"w"])
_mode = OFTarArchiveModeWrite;
else if ([mode isEqual: @"a"])
_mode = OFTarArchiveModeAppend;
else
@throw [OFInvalidArgumentException exception];
if (_mode == OFTarArchiveModeAppend) {
uint32_t buffer[1024 / sizeof(uint32_t)];
bool empty = true;
if (![_stream isKindOfClass: [OFSeekableStream class]])
@throw [OFInvalidArgumentException exception];
[(OFSeekableStream *)_stream seekToOffset: -1024
whence: SEEK_END];
[_stream readIntoBuffer: buffer exactLength: 1024];
for (size_t i = 0; i < 1024 / sizeof(uint32_t); i++)
if (buffer[i] != 0)
empty = false;
if (!empty)
@throw [OFInvalidFormatException exception];
[(OFSeekableStream *)stream seekToOffset: -1024
whence: SEEK_END];
}
_encoding = OFStringEncodingUTF8;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
#ifdef OF_HAVE_FILES
- (instancetype)initWithPath: (OFString *)path mode: (OFString *)mode
{
OFFile *file;
if ([mode isEqual: @"a"])
file = [[OFFile alloc] initWithPath: path mode: @"r+"];
else
file = [[OFFile alloc] initWithPath: path mode: mode];
@try {
self = [self initWithStream: file mode: mode];
} @finally {
[file release];
}
return self;
}
#endif
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- (OFTarArchiveEntry *)nextEntry
{
OFTarArchiveEntry *entry;
uint32_t buffer[512 / sizeof(uint32_t)];
bool empty = true;
if (_mode != OF_TAR_ARCHIVE_MODE_READ)
@throw [OFInvalidArgumentException exception];
[(OFTarArchiveFileReadStream *)_lastReturnedStream of_skip];
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
if (_stream.atEndOfStream)
return nil;
[_stream readIntoBuffer: buffer
exactLength: 512];
for (size_t i = 0; i < 512 / sizeof(uint32_t); i++)
if (buffer[i] != 0)
empty = false;
if (empty) {
[_stream readIntoBuffer: buffer
exactLength: 512];
for (size_t i = 0; i < 512 / sizeof(uint32_t); i++)
if (buffer[i] != 0)
@throw [OFInvalidFormatException exception];
return nil;
}
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- (OFTarArchiveEntry *)nextEntry
{
OFTarArchiveEntry *entry;
uint32_t buffer[512 / sizeof(uint32_t)];
bool empty = true;
if (_mode != OFTarArchiveModeRead)
@throw [OFInvalidArgumentException exception];
[(OFTarArchiveFileReadStream *)_lastReturnedStream of_skip];
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
if (_stream.atEndOfStream)
return nil;
[_stream readIntoBuffer: buffer exactLength: 512];
for (size_t i = 0; i < 512 / sizeof(uint32_t); i++)
if (buffer[i] != 0)
empty = false;
if (empty) {
[_stream readIntoBuffer: buffer exactLength: 512];
for (size_t i = 0; i < 512 / sizeof(uint32_t); i++)
if (buffer[i] != 0)
@throw [OFInvalidFormatException exception];
return nil;
}
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entry: entry];
return entry;
}
- (OFStream *)streamForReadingCurrentEntry
{
if (_mode != OF_TAR_ARCHIVE_MODE_READ)
@throw [OFInvalidArgumentException exception];
if (_lastReturnedStream == nil)
@throw [OFInvalidArgumentException exception];
return [[(OFTarArchiveFileReadStream *)_lastReturnedStream
retain] autorelease];
}
- (OFStream *)streamForWritingEntry: (OFTarArchiveEntry *)entry
{
void *pool;
if (_mode != OF_TAR_ARCHIVE_MODE_WRITE &&
_mode != OF_TAR_ARCHIVE_MODE_APPEND)
@throw [OFInvalidArgumentException exception];
pool = objc_autoreleasePoolPush();
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
[entry of_writeToStream: _stream
encoding: _encoding];
_lastReturnedStream = [[OFTarArchiveFileWriteStream alloc]
of_initWithStream: _stream
entry: entry];
objc_autoreleasePoolPop(pool);
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entry: entry];
return entry;
}
- (OFStream *)streamForReadingCurrentEntry
{
if (_mode != OFTarArchiveModeRead)
@throw [OFInvalidArgumentException exception];
if (_lastReturnedStream == nil)
@throw [OFInvalidArgumentException exception];
return [[(OFTarArchiveFileReadStream *)_lastReturnedStream
retain] autorelease];
}
- (OFStream *)streamForWritingEntry: (OFTarArchiveEntry *)entry
{
void *pool;
if (_mode != OFTarArchiveModeWrite && _mode != OFTarArchiveModeAppend)
@throw [OFInvalidArgumentException exception];
pool = objc_autoreleasePoolPush();
@try {
[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
[entry of_writeToStream: _stream encoding: _encoding];
_lastReturnedStream = [[OFTarArchiveFileWriteStream alloc]
of_initWithStream: _stream
entry: entry];
objc_autoreleasePoolPop(pool);
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[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
if (_mode == OF_TAR_ARCHIVE_MODE_WRITE ||
_mode == OF_TAR_ARCHIVE_MODE_APPEND) {
char buffer[1024];
memset(buffer, '\0', 1024);
[_stream writeBuffer: buffer
length: 1024];
}
[_stream release];
_stream = nil;
}
@end
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[_lastReturnedStream close];
} @catch (OFNotOpenException *e) {
/* Might have already been closed by the user - that's fine. */
}
[_lastReturnedStream release];
_lastReturnedStream = nil;
if (_mode == OFTarArchiveModeWrite || _mode == OFTarArchiveModeAppend) {
char buffer[1024];
memset(buffer, '\0', 1024);
[_stream writeBuffer: buffer length: 1024];
}
[_stream release];
_stream = nil;
}
@end
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if (length > UINT64_MAX)
@throw [OFOutOfRangeException exception];
#endif
if ((uint64_t)length > _toRead)
length = (size_t)_toRead;
ret = [_stream readIntoBuffer: buffer
length: length];
if (ret == 0)
_atEndOfStream = true;
_toRead -= ret;
return ret;
}
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if (length > UINT64_MAX)
@throw [OFOutOfRangeException exception];
#endif
if ((uint64_t)length > _toRead)
length = (size_t)_toRead;
ret = [_stream readIntoBuffer: buffer length: length];
if (ret == 0)
_atEndOfStream = true;
_toRead -= ret;
return ret;
}
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- (void)of_skip
{
if (_stream == nil || _skipped)
return;
if ([_stream isKindOfClass: [OFSeekableStream class]] &&
_toRead <= INT64_MAX && (of_offset_t)_toRead == (int64_t)_toRead) {
uint64_t size;
[(OFSeekableStream *)_stream seekToOffset: (of_offset_t)_toRead
whence: SEEK_CUR];
_toRead = 0;
size = _entry.size;
if (size % 512 != 0)
[(OFSeekableStream *)_stream
seekToOffset: 512 - (size % 512)
whence: SEEK_CUR];
} else {
char buffer[512];
uint64_t size;
while (_toRead >= 512) {
[_stream readIntoBuffer: buffer
exactLength: 512];
_toRead -= 512;
}
if (_toRead > 0) {
[_stream readIntoBuffer: buffer
exactLength: (size_t)_toRead];
_toRead = 0;
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- (void)of_skip
{
if (_stream == nil || _skipped)
return;
if ([_stream isKindOfClass: [OFSeekableStream class]] &&
_toRead <= INT64_MAX && (OFFileOffset)_toRead == (int64_t)_toRead) {
uint64_t size;
[(OFSeekableStream *)_stream seekToOffset: (OFFileOffset)_toRead
whence: SEEK_CUR];
_toRead = 0;
size = _entry.size;
if (size % 512 != 0)
[(OFSeekableStream *)_stream
seekToOffset: 512 - (size % 512)
whence: SEEK_CUR];
} else {
char buffer[512];
uint64_t size;
while (_toRead >= 512) {
[_stream readIntoBuffer: buffer exactLength: 512];
_toRead -= 512;
}
if (_toRead > 0) {
[_stream readIntoBuffer: buffer
exactLength: (size_t)_toRead];
_toRead = 0;
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[self close];
[_entry release];
[super dealloc];
}
- (size_t)lowlevelWriteBuffer: (const void *)buffer
length: (size_t)length
{
size_t bytesWritten;
if (_stream == nil)
@throw [OFNotOpenException exceptionWithObject: self];
if ((uint64_t)length > _toWrite)
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[self close];
[_entry release];
[super dealloc];
}
- (size_t)lowlevelWriteBuffer: (const void *)buffer length: (size_t)length
{
size_t bytesWritten;
if (_stream == nil)
@throw [OFNotOpenException exceptionWithObject: self];
if ((uint64_t)length > _toWrite)
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