Artifact 01c49327d99799883d425e4171e487f632bf9d4460d0a4f6dcbbec90824ad54d:
- File
src/OFZooArchiveEntry.m
— part of check-in
[9a95da71d5]
at
2024-02-28 00:24:42
on branch trunk
— Add OFZooArchive
Only support for reading so far.
Compression methods 0 (uncompressed) and 2 (LZ77 + Huffman, apparently
identical to lh4/lh5) are supported. (user: js, size: 4064) [annotate] [blame] [check-ins using]
/* * 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. * * 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. */ #include "config.h" #import "OFZooArchiveEntry.h" #import "OFZooArchiveEntry+Private.h" #import "OFDate.h" #import "OFSeekableStream.h" #import "OFStream.h" #import "OFString.h" #import "OFInvalidFormatException.h" @implementation OFZooArchiveEntry @synthesize compressionMethod = _compressionMethod, CRC16 = _CRC16; @synthesize uncompressedSize = _uncompressedSize; @synthesize compressedSize = _compressedSize, deleted = _deleted; @synthesize fileComment = _fileComment, fileName = _fileName; - (instancetype)init { OF_INVALID_INIT_METHOD } - (instancetype)of_initWithStream: (OF_KINDOF(OFStream *))stream encoding: (OFStringEncoding)encoding { self = [super init]; @try { void *pool = objc_autoreleasePoolPush(); uint32_t commentOffset; uint16_t commentLength; if ([stream readLittleEndianInt32] != 0xFDC4A7DC) @throw [OFInvalidFormatException exception]; /* Type seems to be always 2 */ if ([stream readInt8] != 2) @throw [OFInvalidFormatException exception]; _compressionMethod = [stream readInt8]; _nextHeaderOffset = [stream readLittleEndianInt32]; _dataOffset = [stream readLittleEndianInt32]; _lastModifiedFileDate = [stream readLittleEndianInt16]; _lastModifiedFileTime = [stream readLittleEndianInt16]; _CRC16 = [stream readLittleEndianInt16]; _uncompressedSize = [stream readLittleEndianInt32]; _compressedSize = [stream readLittleEndianInt32]; /* Version */ [stream readBigEndianInt16]; _deleted = [stream readInt8]; /* Unknown. Most likely padding to get to 2 byte alignment? */ [stream readInt8]; commentOffset = [stream readLittleEndianInt32]; commentLength = [stream readLittleEndianInt16]; _fileName = [[stream readLineWithEncoding: encoding] retain]; if (commentOffset != 0) { [stream seekToOffset: commentOffset whence: OFSeekSet]; _fileComment = [[stream readStringWithLength: commentLength encoding: encoding] retain]; } objc_autoreleasePoolPop(pool); } @catch (id e) { [self release]; @throw e; } return self; } - (void)dealloc { [_fileComment release]; [_fileName release]; [super dealloc]; } - (id)copy { return [self retain]; } - (OFDate *)modificationDate { void *pool = objc_autoreleasePoolPush(); uint16_t year = ((_lastModifiedFileDate & 0xFE00) >> 9) + 1980; uint8_t month = (_lastModifiedFileDate & 0x1E0) >> 5; uint8_t day = (_lastModifiedFileDate & 0x1F); uint8_t hour = (_lastModifiedFileTime & 0xF800) >> 11; uint8_t minute = (_lastModifiedFileTime & 0x7E0) >> 5; uint8_t second = (_lastModifiedFileTime & 0x1F) << 1; OFDate *date; OFString *dateString; dateString = [OFString stringWithFormat: @"%04u-%02u-%02u %02u:%02u:%02u", year, month, day, hour, minute, second]; date = [[OFDate alloc] initWithLocalDateString: dateString format: @"%Y-%m-%d %H:%M:%S"]; objc_autoreleasePoolPop(pool); return [date autorelease]; } - (OFString *)description { void *pool = objc_autoreleasePoolPush(); OFString *ret = [OFString stringWithFormat: @"<%@: \n" @"\tFile name = %@\n" @"\tFile comment = %@\n" @"\tCompressed size = %llu\n" @"\tUncompressed size = %llu\n" @"\tCompression method = %u\n" @"\tModification date = %@\n" @"\tCRC16 = %04" @PRIX16 @"\n" @"\tDeleted = %u\n" @">", self.class, _fileName, _fileComment, _compressedSize, _uncompressedSize, _compressionMethod, self.modificationDate, _CRC16, _deleted]; [ret retain]; objc_autoreleasePoolPop(pool); return [ret autorelease]; } @end