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<?php |
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namespace PhpZip\Model\Extra\Fields; |
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use PhpZip\Exception\ZipException; |
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use PhpZip\Model\Extra\ZipExtraField; |
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use PhpZip\Model\ZipEntry; |
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/** |
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* A common base class for Unicode extra information extra fields. |
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*/ |
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abstract class AbstractUnicodeExtraField implements ZipExtraField |
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{ |
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const DEFAULT_VERSION = 0x01; |
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/** @var int */ |
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private $crc32; |
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/** @var string */ |
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private $unicodeValue; |
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/** |
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* @param int $crc32 |
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* @param string $unicodeValue |
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*/ |
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public function __construct($crc32, $unicodeValue) |
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{ |
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$this->crc32 = (int) $crc32; |
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$this->unicodeValue = (string) $unicodeValue; |
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} |
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/** |
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* @return int the CRC32 checksum of the filename or comment as |
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* encoded in the central directory of the zip file |
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*/ |
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public function getCrc32() |
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{ |
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return $this->crc32; |
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} |
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/** |
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* @param int $crc32 |
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*/ |
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public function setCrc32($crc32) |
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{ |
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$this->crc32 = (int) $crc32; |
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} |
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/** |
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* @return string |
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*/ |
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public function getUnicodeValue() |
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{ |
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return $this->unicodeValue; |
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} |
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/** |
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* @param string $unicodeValue the UTF-8 encoded name to set |
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*/ |
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public function setUnicodeValue($unicodeValue) |
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{ |
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$this->unicodeValue = $unicodeValue; |
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} |
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/** |
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* Populate data from this array as if it was in local file data. |
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* |
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* @param string $buffer the buffer to read data from |
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* @param ZipEntry|null $entry |
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* |
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* @throws ZipException on error |
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* |
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* @return static |
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*/ |
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public static function unpackLocalFileData($buffer, ZipEntry $entry = null) |
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{ |
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if (\strlen($buffer) < 5) { |
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throw new ZipException('Unicode path extra data must have at least 5 bytes.'); |
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} |
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$data = unpack('Cversion/Vcrc32', $buffer); |
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if ($data['version'] !== self::DEFAULT_VERSION) { |
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throw new ZipException(sprintf('Unsupported version [%d] for Unicode path extra data.', $data['version'])); |
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} |
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$unicodeValue = substr($buffer, 5); |
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return new static($data['crc32'], $unicodeValue); |
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} |
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/** |
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* Populate data from this array as if it was in central directory data. |
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* |
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* @param string $buffer the buffer to read data from |
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* @param ZipEntry|null $entry |
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* |
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* @throws ZipException on error |
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* |
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* @return static |
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*/ |
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public static function unpackCentralDirData($buffer, ZipEntry $entry = null) |
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{ |
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return self::unpackLocalFileData($buffer, $entry); |
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} |
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/** |
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* The actual data to put into local file data - without Header-ID |
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* or length specifier. |
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* |
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* @return string the data |
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*/ |
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public function packLocalFileData() |
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{ |
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return pack( |
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'CV', |
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self::DEFAULT_VERSION, |
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$this->crc32 |
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) . |
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$this->unicodeValue; |
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} |
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/** |
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* The actual data to put into central directory - without Header-ID or |
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* length specifier. |
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* |
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* @return string the data |
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*/ |
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public function packCentralDirData() |
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{ |
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return $this->packLocalFileData(); |
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} |
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} |
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Ne-Lexa /
php-zip
