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<?php |
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/** |
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* This file is part of the core-library package. |
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* |
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* (c) 2017 NdC/WBW |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WBW\Library\Core\Utility; |
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use WBW\Library\Core\Exception\Argument\IllegalArgumentException; |
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use WBW\Library\Core\Exception\Directory\DirectoryNotFoundException; |
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use WBW\Library\Core\Exception\File\FileNotFoundException; |
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use WBW\Library\Core\File\FileSizeInterface; |
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/** |
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* File utility. |
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* |
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* @author NdC/WBW <https://github.com/webeweb/> |
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* @package WBW\Library\Core\Utility |
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* @final |
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*/ |
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final class FileUtility implements FileSizeInterface { |
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/** |
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* Format a size. |
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* |
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* @param $size The size. |
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* @param string $unit The unit. |
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* @return string Returns the formated size. |
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*/ |
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public static function formatSize($size, $unit = null, $decimals = 2) { |
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// Initialize the units. |
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$units = self::getUnits(); |
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// Find the unit. |
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$index = array_search($unit, $units); |
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if (is_null($unit) === false && $index === false) { |
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throw new IllegalArgumentException("The unit \"" . $unit . "\" does not exists"); |
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} |
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// Initialize the output. |
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$output = $size; |
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$iteration = 0; |
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while (self::FILE_SIZE_DIVIDER <= $output || $iteration < $index) { |
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$output /= self::FILE_SIZE_DIVIDER; |
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++$iteration; |
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} |
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// Return the output. |
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return implode(" ", [sprintf("%." . $decimals . "f", $output), $units[$iteration]]); |
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} |
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/** |
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* Get a file contents. |
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* |
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* @param string $filename The filename. |
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* @return string Returns the file contents. |
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* @throws FileNotFoundException Throws a file not found exception if the file does not exists. |
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*/ |
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public static function getContents($filename) { |
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if (!file_exists($filename)) { |
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throw new FileNotFoundException($filename); |
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} |
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return file_get_contents($filename); |
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} |
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/** |
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* Get the filenames. |
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* |
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* @param string $pathname The pathname. |
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* @param string $extension The file extension. |
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* @return array Returns the filenames. |
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* @throws DirectoryNotFoundException Throws a directory not found exception if the directory does not exists. |
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*/ |
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public static function getFilenames($pathname, $extension = null) { |
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// Check if the directory exists. |
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if (!file_exists($pathname)) { |
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throw new DirectoryNotFoundException($pathname); |
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} |
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// Initialize the filenames. |
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$filenames = []; |
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// Open the directory. |
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if (($directory = opendir($pathname)) !== false) { |
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// Initialize the offset. |
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$offset = strlen($extension); |
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// Read the directory. |
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while (($file = readdir($directory)) !== false) { |
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// Determines if the file should be added. |
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if ($file !== "." && $file !== ".." && ((is_null($extension)) || substr_compare($file, $extension, -$offset) === 0)) { |
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$filenames[] = $file; |
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} |
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} |
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// Close the directory. |
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closedir($directory); |
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} |
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// Return the filenames. |
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return $filenames; |
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} |
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/** |
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* Get a file size. |
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* |
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* @param string $filename The filename. |
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* @return integer Returns the file size. |
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* @throws FileNotFoundException Throws a File not found exception if the file does not exists. |
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*/ |
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public static function getSize($filename) { |
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if (file_exists($filename) === false) { |
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throw new FileNotFoundException($filename); |
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} |
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clearstatcache(); |
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return filesize($filename); |
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} |
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/** |
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* Get the units. |
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* |
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* @return array Returns the units. |
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*/ |
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public static function getUnits() { |
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return [ |
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self::FILE_SIZE_UNIT_B, |
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self::FILE_SIZE_UNIT_KB, |
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self::FILE_SIZE_UNIT_MB, |
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self::FILE_SIZE_UNIT_GB, |
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self::FILE_SIZE_UNIT_TB, |
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self::FILE_SIZE_UNIT_PB, |
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self::FILE_SIZE_UNIT_EB, |
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self::FILE_SIZE_UNIT_ZB, |
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self::FILE_SIZE_UNIT_YB, |
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]; |
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} |
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} |
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webeweb /
core-library
