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