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<?php |
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namespace League\Flysystem; |
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use League\Flysystem\Util\MimeType; |
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use LogicException; |
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class Util |
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{ |
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/** |
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* Get normalized pathinfo. |
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* |
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* @param string $path |
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* |
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* @return array pathinfo |
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*/ |
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public static function pathinfo($path) |
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{ |
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$pathinfo = pathinfo($path) + compact('path'); |
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$pathinfo['dirname'] = array_key_exists('dirname', $pathinfo) |
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? static::normalizeDirname($pathinfo['dirname']) : ''; |
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return $pathinfo; |
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} |
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/** |
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* Normalize a dirname return value. |
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* |
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* @param string $dirname |
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* |
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* @return string normalized dirname |
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*/ |
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public static function normalizeDirname($dirname) |
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{ |
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return $dirname === '.' ? '' : $dirname; |
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} |
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/** |
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* Get a normalized dirname from a path. |
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* |
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* @param string $path |
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* |
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* @return string dirname |
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*/ |
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public static function dirname($path) |
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{ |
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return static::normalizeDirname(dirname($path)); |
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} |
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/** |
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* Map result arrays. |
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* |
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* @param array $object |
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* @param array $map |
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* |
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* @return array mapped result |
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*/ |
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public static function map(array $object, array $map) |
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{ |
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$result = array(); |
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foreach ($map as $from => $to) { |
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if ( ! isset($object[$from])) { |
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continue; |
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} |
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$result[$to] = $object[$from]; |
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} |
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return $result; |
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} |
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/** |
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* Normalize path. |
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* |
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* @param string $path |
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* |
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* @throws LogicException |
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* |
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* @return string |
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*/ |
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public static function normalizePath($path) |
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{ |
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// Remove any kind of funky unicode whitespace |
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$normalized = preg_replace('#\p{C}+|^\./#u', '', $path); |
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$normalized = static::normalizeRelativePath($normalized); |
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if (preg_match('#/\.{2}|^\.{2}/|^\.{2}$#', $normalized)) { |
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throw new LogicException( |
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'Path is outside of the defined root, path: [' . $path . '], resolved: [' . $normalized . ']' |
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); |
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} |
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$normalized = preg_replace('#\\\{2,}#', '\\', trim($normalized, '\\')); |
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$normalized = preg_replace('#/{2,}#', '/', trim($normalized, '/')); |
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return $normalized; |
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} |
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/** |
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* Normalize relative directories in a path. |
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* |
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* @param string $path |
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* |
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* @return string |
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*/ |
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public static function normalizeRelativePath($path) |
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{ |
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// Path remove self referring paths ("/./"). |
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$path = preg_replace('#/\.(?=/)|^\./|(/|^)\./?$#', '', $path); |
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// Regex for resolving relative paths |
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$regex = '#/*[^/\.]+/\.\.#Uu'; |
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while (preg_match($regex, $path)) { |
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$path = preg_replace($regex, '', $path); |
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} |
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return $path; |
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} |
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/** |
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* Normalize prefix. |
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* |
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* @param string $prefix |
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* @param string $separator |
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* |
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* @return string normalized path |
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*/ |
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public static function normalizePrefix($prefix, $separator) |
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{ |
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return rtrim($prefix, $separator) . $separator; |
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} |
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/** |
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* Get content size. |
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* |
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* @param string $contents |
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* |
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* @return int content size |
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*/ |
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public static function contentSize($contents) |
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{ |
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return defined('MB_OVERLOAD_STRING') ? mb_strlen($contents, '8bit') : strlen($contents); |
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} |
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/** |
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* Guess MIME Type based on the path of the file and it's content. |
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* |
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* @param string $path |
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* @param string|resource $content |
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* |
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* @return string|null MIME Type or NULL if no extension detected |
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*/ |
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public static function guessMimeType($path, $content) |
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{ |
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$mimeType = MimeType::detectByContent($content); |
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if ( ! (empty($mimeType) || in_array($mimeType, array('application/x-empty', 'text/plain', 'text/x-asm')))) { |
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return $mimeType; |
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} |
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return MimeType::detectByFilename($path); |
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} |
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/** |
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* Emulate directories. |
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* |
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* @param array $listing |
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* |
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* @return array listing with emulated directories |
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*/ |
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public static function emulateDirectories(array $listing) |
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{ |
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$directories = array(); |
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$listedDirectories = array(); |
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foreach ($listing as $object) { |
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list($directories, $listedDirectories) = static::emulateObjectDirectories( |
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$object, |
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$directories, |
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$listedDirectories |
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); |
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} |
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$directories = array_diff(array_unique($directories), array_unique($listedDirectories)); |
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foreach ($directories as $directory) { |
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$listing[] = static::pathinfo($directory) + array('type' => 'dir'); |
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} |
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return $listing; |
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} |
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/** |
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* Ensure a Config instance. |
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* |
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* @param null|array|Config $config |
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* |
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* @return Config config instance |
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* |
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* @throw LogicException |
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*/ |
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public static function ensureConfig($config) |
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{ |
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if ($config === null) { |
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return new Config(); |
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} |
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if ($config instanceof Config) { |
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return $config; |
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} |
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if (is_array($config)) { |
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return new Config($config); |
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} |
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throw new LogicException('A config should either be an array or a Flysystem\Config object.'); |
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} |
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/** |
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* Rewind a stream. |
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* |
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* @param resource $resource |
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*/ |
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public static function rewindStream($resource) |
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{ |
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if (ftell($resource) !== 0 && static::isSeekableStream($resource)) { |
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rewind($resource); |
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} |
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} |
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public static function isSeekableStream($resource) |
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{ |
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$metadata = stream_get_meta_data($resource); |
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return $metadata['seekable']; |
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} |
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/** |
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* Get the size of a stream. |
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* |
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* @param resource $resource |
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* |
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* @return int stream size |
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*/ |
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public static function getStreamSize($resource) |
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{ |
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$stat = fstat($resource); |
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return $stat['size']; |
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} |
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/** |
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* Emulate the directories of a single object. |
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* |
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* @param array $object |
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* @param array $directories |
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* @param array $listedDirectories |
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* |
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* @return array |
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*/ |
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protected static function emulateObjectDirectories(array $object, array $directories, array $listedDirectories) |
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{ |
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if ($object['type'] === 'dir') { |
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$listedDirectories[] = $object['path']; |
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} |
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if (empty($object['dirname'])) { |
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return array($directories, $listedDirectories); |
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} |
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$parent = $object['dirname']; |
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while ( ! empty($parent) && ! in_array($parent, $directories)) { |
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$directories[] = $parent; |
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$parent = static::dirname($parent); |
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} |
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if (isset($object['type']) && $object['type'] === 'dir') { |
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$listedDirectories[] = $object['path']; |
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return array($directories, $listedDirectories); |
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} |
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return array($directories, $listedDirectories); |
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} |
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} |
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