ObjFW  Check-in [46b89b1c8e]

#ifdef OF_HAVE_FILES
- initWithContentsOfFile: (OFString*)path
{
	@try {
		OFFile *file = [[OFFile alloc] initWithPath: path
						       mode: @"rb"];
		of_offset_t size = [OFFile sizeOfFileAtPath: path];

		if (size > SIZE_MAX)
			@throw [OFOutOfRangeException exception];

		self = [self initWithItemSize: 1
				     capacity: (size_t)size];

+ (void)changeCurrentDirectoryPath: (OFString*)path;

/*!
 * @brief Returns the size of the specified file.
 *
 * @return The size of the specified file
 */
+ (of_offset_t)sizeOfFileAtPath: (OFString*)path;

/*!
 * @brief Returns the date of the last modification of the file.
 *
 * @return The date of the last modification of the file
 */
+ (OFDate*)modificationDateOfFileAtPath: (OFString*)path;

#else
	if (_wchdir([path UTF16String]) != 0)
#endif
		@throw [OFChangeCurrentDirectoryPathFailedException
		    exceptionWithPath: path];
}

+ (of_offset_t)sizeOfFileAtPath: (OFString*)path
{
	of_stat_t s;

	if (path == nil)
		@throw [OFInvalidArgumentException exception];

	if (of_stat(path, &s) == -1)
		/* FIXME: Maybe use another exception? */
		@throw [OFOpenFileFailedException exceptionWithPath: path
							       mode: @"r"];


	return s.st_size;
}

+ (OFDate*)modificationDateOfFileAtPath: (OFString*)path
{
	of_stat_t s;

	if (path == nil)

	if (_fd == -1 || _atEndOfStream ||
	    write(_fd, buffer, (unsigned int)length) < length)
		@throw [OFWriteFailedException exceptionWithObject: self
						   requestedLength: length];
#endif
}

- (of_offset_t)lowlevelSeekToOffset: (of_offset_t)offset
			     whence: (int)whence
{
	of_offset_t ret = lseek(_fd, offset, whence);

	if (ret == -1)
		@throw [OFSeekFailedException exceptionWithStream: self
							   offset: offset
							   whence: whence];

	_atEndOfStream = false;

# define __STDC_CONSTANT_MACROS
#endif

#include <sys/types.h>

#import "OFStream.h"

#ifdef __ANDROID__
typedef long long of_offset_t;
#else
typedef off_t of_offset_t;
#endif

/*!
 * @class OFSeekableStream OFSeekableStream.h ObjFW/OFSeekableStream.h
 *
 * @brief A stream that supports seeking.
 *
 * @note If you want to subclass this, override
 *	 @ref lowlevelSeekToOffset:whence:. OFSeekableStream uses this method

 *		 Value      | Description
 *		 -----------|---------------------------------------
 *		 `SEEK_SET` | Seek to the specified byte
 *		 `SEEK_CUR` | Seek to the current location + offset
 *		 `SEEK_END` | Seek to the end of the stream + offset
 * @return The new offset form the start of the file
 */
- (of_offset_t)seekToOffset: (of_offset_t)offset
		     whence: (int)whence;

/*!
 * @brief Seek the stream on the lowlevel.
 *
 * @warning Do not call this directly!
 *
 * Override this with this method with your actual seek implementation when
 * subclassing!
 *
 * @param offset The offset to seek to
 * @param whence From where to seek.@n
 *		 Possible values are:
 *		 Value      | Description
 *		 -----------|---------------------------------------
 *		 `SEEK_SET` | Seek to the specified byte
 *		 `SEEK_CUR` | Seek to the current location + offset
 *		 `SEEK_END` | Seek to the end of the stream + offset
 * @return The new offset from the start of the file
 */
- (of_offset_t)lowlevelSeekToOffset: (of_offset_t)offset
			     whence: (int)whence;
@end

			@throw e;
		}
	}

	return [super init];
}

- (of_offset_t)lowlevelSeekToOffset: (of_offset_t)offset
			     whence: (int)whence
{
	OF_UNRECOGNIZED_SELECTOR
}

- (of_offset_t)seekToOffset: (of_offset_t)offset
		     whence: (int)whence
{
	if (whence == SEEK_CUR)
		offset -= _readBufferLength;

	offset = [self lowlevelSeekToOffset: offset
				     whence: whence];

	bool _hasDataDescriptor;
	uint64_t _size;
	uint32_t _CRC32;
	bool _atEndOfStream;
}

- initWithArchiveFile: (OFString*)path
	       offset: (of_offset_t)offset
      localFileHeader: (OFZIPArchive_LocalFileHeader*)localFileHeader;
@end

uint32_t
of_zip_archive_read_field32(uint8_t **data, uint16_t *size)
{
	uint32_t field = 0;

	[super dealloc];
}

- (void)OF_readZIPInfo
{
	void *pool = objc_autoreleasePoolPush();
	uint16_t commentLength;
	of_offset_t offset = -22;
	bool valid = false;

	do {
		@try {
			[_file seekToOffset: offset
				     whence: SEEK_END];
		} @catch (OFSeekFailedException *e) {

		/*
		 * FIXME: Handle number of the disk containing ZIP64 end of
		 * central directory record.
		 */
		[_file readLittleEndianInt32];
		offset64 = [_file readLittleEndianInt64];

		if ((of_offset_t)offset64 != offset64)
			@throw [OFOutOfRangeException exception];

		[_file seekToOffset: (of_offset_t)offset64
			     whence: SEEK_SET];

		if ([_file readLittleEndianInt32] != 0x06064B50)
			@throw [OFInvalidFormatException exception];

		size = [_file readLittleEndianInt64];
		if (size < 44)

		_diskNumber = [_file readLittleEndianInt32];
		_centralDirectoryDisk = [_file readLittleEndianInt32];
		_centralDirectoryEntriesInDisk = [_file readLittleEndianInt64];
		_centralDirectoryEntries = [_file readLittleEndianInt64];
		_centralDirectorySize = [_file readLittleEndianInt64];
		_centralDirectoryOffset = [_file readLittleEndianInt64];

		if ((of_offset_t)_centralDirectoryOffset !=
		    _centralDirectoryOffset)
			@throw [OFOutOfRangeException exception];
	}

	objc_autoreleasePoolPop(pool);
}

- (void)OF_readEntries
{
	void *pool = objc_autoreleasePoolPush();
	size_t i;

	if ((of_offset_t)_centralDirectoryOffset != _centralDirectoryOffset)
		@throw [OFOutOfRangeException exception];

	[_file seekToOffset: (of_offset_t)_centralDirectoryOffset
		     whence: SEEK_SET];

	_entries = [[OFMutableArray alloc] init];
	_pathToEntryMap = [[OFMutableDictionary alloc] init];

	for (i = 0; i < _centralDirectoryEntries; i++) {
		OFZIPArchiveEntry *entry = [[[OFZIPArchiveEntry alloc]

- (OFStream*)streamForReadingFile: (OFString*)path
{
	OFStream *ret;
	void *pool = objc_autoreleasePoolPush();
	OFZIPArchiveEntry *entry = [_pathToEntryMap objectForKey: path];
	OFZIPArchive_LocalFileHeader *localFileHeader;
	uint64_t offset64;

	if (entry == nil) {
		errno = ENOENT;
		@throw [OFOpenFileFailedException exceptionWithPath: path
							       mode: @"rb"];
	}

	offset64 = [entry OF_localFileHeaderOffset];
	if ((of_offset_t)offset64 != offset64)
		@throw [OFOutOfRangeException exception];

	[_file seekToOffset: (of_offset_t)offset64
		     whence: SEEK_SET];
	localFileHeader = [[[OFZIPArchive_LocalFileHeader alloc]
	    initWithFile: _file] autorelease];

	if (![localFileHeader matchesEntry: entry])
		@throw [OFInvalidFormatException exception];

	return true;
}
@end

@implementation OFZIPArchive_FileStream
- initWithArchiveFile: (OFString*)path
	       offset: (of_offset_t)offset
      localFileHeader: (OFZIPArchive_LocalFileHeader*)localFileHeader
{
	self = [super init];

	@try {
		_file = [[OFFile alloc] initWithPath: path
						mode: @"rb"];

 *
 * 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.
 */





#import "OFException.h"

#import "OFSeekableStream.h"

/*!
 * @class OFSeekFailedException \
 *	  OFSeekFailedException.h ObjFW/OFSeekFailedException.h
 *
 * @brief An exception indicating that seeking in a stream failed.
 */
@interface OFSeekFailedException: OFException
{
	OFSeekableStream *_stream;
	of_offset_t _offset;
	int _whence, _errNo;
}

#ifdef OF_HAVE_PROPERTIES
@property (readonly, retain) OFSeekableStream *stream;
@property (readonly) of_offset_t offset;
@property (readonly) int whence, errNo;
#endif

/*!
 * @brief Creates a new, autoreleased seek failed exception.
 *
 * @param stream The stream for which seeking failed
 * @param offset The offset to which seeking failed
 * @param whence To what the offset is relative
 * @return A new, autoreleased seek failed exception
 */
+ (instancetype)exceptionWithStream: (OFSeekableStream*)stream
			     offset: (of_offset_t)offset
			     whence: (int)whence;

/*!
 * @brief Initializes an already allocated seek failed exception.
 *
 * @param stream The stream for which seeking failed
 * @param offset The offset to which seeking failed
 * @param whence To what the offset is relative
 * @return An initialized seek failed exception
 */
- initWithStream: (OFSeekableStream*)stream
	  offset: (of_offset_t)offset
	  whence: (int)whence;

/*!
 * @brief Returns the stream for which seeking failed.
 *
 * @return The stream for which seeking failed
 */
- (OFSeekableStream*)stream;

/*!
 * @brief Returns the offset to which seeking failed.
 *
 * @return The offset to which seeking failed
 */
- (of_offset_t)offset;

/*!
 * @brief Returns to what the offset is relative.
 *
 * @return To what the offset is relative
 */
- (int)whence;

#import "OFString.h"
#import "OFSeekableStream.h"

#import "common.h"

@implementation OFSeekFailedException
+ (instancetype)exceptionWithStream: (OFSeekableStream*)stream
			     offset: (of_offset_t)offset
			     whence: (int)whence
{
	return [[[self alloc] initWithStream: stream
				      offset: offset
				      whence: whence] autorelease];
}

- init
{
	OF_INVALID_INIT_METHOD
}

- initWithStream: (OFSeekableStream*)stream
	  offset: (of_offset_t)offset
	  whence: (int)whence
{
	self = [super init];

	_stream = [stream retain];
	_offset = offset;
	_whence = whence;

}

- (OFSeekableStream*)stream
{
	OF_GETTER(_stream, true)
}

- (of_offset_t)offset
{
	return _offset;
}

- (int)whence
{
	return _whence;