ObjFW  Check-in [d7e496ba27]

	if (function == NULL)
		return false;

	function(entry, extension, encoding);
	return true;
}

static size_t
readExtensions(OFLHAArchiveEntry *entry, OFStream *stream,
    OFStringEncoding encoding, bool allowFileName)
{
	size_t consumed = 0;

	for (;;) {
		uint32_t size;
		OFData *extension;

		if (entry->_headerLevel == 3) {
			size = [stream readLittleEndianInt32];
			consumed += 4;
		} else {
			size = [stream readLittleEndianInt16];
			consumed += 2;
		}

		if (size == 0)
			break;

		if (size < 2 || (entry->_headerLevel == 3 && size < 4))
			@throw [OFInvalidFormatException exception];

		extension = [stream readDataWithCount:
		    size - (entry->_headerLevel == 3 ? 4 : 2)];
		consumed += extension.count;

		if (!parseExtension(entry, extension, encoding, allowFileName))
			[entry->_extensions addObject: extension];

		if (entry->_headerLevel == 1) {
			if (entry->_compressedSize < size)
				@throw [OFInvalidFormatException exception];

			entry->_compressedSize -= size;
		}
	}

	return consumed;
}

static void
getFileNameAndDirectoryName(OFLHAArchiveEntry *entry, OFStringEncoding encoding,
    const char **fileName, size_t *fileNameLength,
    const char **directoryName, size_t *directoryNameLength)
{

				 * 1 for the operating system identifier, 2
				 * because we don't want to skip the size of
				 * the next extended header.
				 */
				extendedAreaSize -= 1 + 2;
			}

			/* Skip extended area */
			if ([stream isKindOfClass: [OFSeekableStream class]])
				[(OFSeekableStream *)stream
				    seekToOffset: extendedAreaSize
					  whence: OFSeekCurrent];
			else {
				char buffer[256];

				while (extendedAreaSize > 0)
					extendedAreaSize -= [stream
					    readIntoBuffer: buffer
						    length: extendedAreaSize];
			}

			if (_headerLevel == 1)
				readExtensions(self, stream, encoding, false);

			objc_autoreleasePoolPop(pool);
			break;
		case 2:
		case 3:;
			uint32_t padding = 0;

			_modificationDate = [[OFDate alloc]
			    initWithTimeIntervalSince1970: date];

			_CRC16 = [stream readLittleEndianInt16];
			_operatingSystemIdentifier = [stream readInt8];

			if (_headerLevel == 3)
				/* Size of entire header */
				padding = [stream readLittleEndianInt32];
			else
				padding = (header[1] << 8) | header[0];

			/*
			 * 21 for header, 2 for CRC16, 1 for operating system
			 * identifier.
			 */
			padding -= 21 + 2 + 1;

			padding -= readExtensions(self, stream, encoding, true);

			/* Skip padding */
			if ([stream isKindOfClass: [OFSeekableStream class]])
				[(OFSeekableStream *)stream
				    seekToOffset: padding
					  whence: OFSeekCurrent];
			else {
				while (padding > 0) {
					char buffer[512];
					size_t min = padding;

					if (min > 512)
						min = 512;

					padding -= [stream
					    readIntoBuffer: buffer
						    length: min];
				}
			}

			break;
		default:;
			OFString *version = [OFString
			    stringWithFormat: @"%u", _headerLevel];

			@throw [OFUnsupportedVersionException