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<?php |
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namespace wapmorgan\UnifiedArchive\Drivers\OneFile; |
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use wapmorgan\UnifiedArchive\Drivers\BasicDriver; |
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use wapmorgan\UnifiedArchive\Formats; |
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use wapmorgan\UnifiedArchive\Drivers\OneFile\OneFileDriver; |
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class Bzip extends OneFileDriver |
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{ |
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const FORMAT_SUFFIX = 'bz2'; |
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const PHP_EXTENSION = 'bz2'; |
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const FORMAT = Formats::BZIP; |
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1 |
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/** |
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* @return array |
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*/ |
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public static function getSupportedFormats() |
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{ |
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return [ |
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Formats::BZIP, |
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]; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public static function getDescription() |
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{ |
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return 'adapter for ext-bzip2'; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function __construct($archiveFileName, $format, $password = null) |
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{ |
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parent::__construct($archiveFileName, $password); |
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$this->modificationTime = filemtime($this->fileName); |
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} |
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/** |
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* @param string $fileName |
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* |
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* @return string|false |
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*/ |
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public function getFileContent($fileName = null) |
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{ |
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return bzdecompress(file_get_contents($this->fileName)); |
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} |
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/** |
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* @param string $fileName |
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* |
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* @return bool|resource|string |
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*/ |
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public function getFileStream($fileName = null) |
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{ |
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return bzopen($this->fileName, 'r'); |
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} |
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/** |
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* @param string $data |
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* @param int $compressionLevel |
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* @return mixed|string |
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*/ |
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protected static function compressData($data, $compressionLevel) |
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{ |
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static $compressionLevelMap = [ |
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self::COMPRESSION_NONE => 1, |
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self::COMPRESSION_WEAK => 2, |
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self::COMPRESSION_AVERAGE => 4, |
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self::COMPRESSION_STRONG => 7, |
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self::COMPRESSION_MAXIMUM => 9, |
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]; |
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static $work_factor_multiplier = 27; |
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// it seems not working at all |
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$work_factor = ($compressionLevelMap[$compressionLevel] * $work_factor_multiplier); |
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return bzcompress($data, $compressionLevelMap[$compressionLevel], $work_factor); |
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} |
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} |
wapmorgan /
UnifiedArchive
