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<?php |
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|
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <fabien@symfony.com> |
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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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|
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namespace Symfony\Component\Filesystem; |
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|
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use Symfony\Component\Filesystem\Exception\FileNotFoundException; |
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use Symfony\Component\Filesystem\Exception\IOException; |
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|
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/** |
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* Provides basic utility to manipulate the file system. |
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* |
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* @author Fabien Potencier <fabien@symfony.com> |
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*/ |
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class Filesystem |
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{ |
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private static $lastError; |
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|
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/** |
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* Copies a file. |
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* |
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* If the target file is older than the origin file, it's always overwritten. |
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* If the target file is newer, it is overwritten only when the |
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* $overwriteNewerFiles option is set to true. |
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* |
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* @param string $originFile The original filename |
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* @param string $targetFile The target filename |
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* @param bool $overwriteNewerFiles If true, target files newer than origin files are overwritten |
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* |
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* @throws FileNotFoundException When originFile doesn't exist |
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* @throws IOException When copy fails |
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*/ |
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public function copy($originFile, $targetFile, $overwriteNewerFiles = false) |
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{ |
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$originIsLocal = stream_is_local($originFile) || 0 === stripos($originFile, 'file://'); |
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if ($originIsLocal && !is_file($originFile)) { |
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throw new FileNotFoundException(sprintf('Failed to copy "%s" because file does not exist.', $originFile), 0, null, $originFile); |
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} |
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|
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$this->mkdir(\dirname($targetFile)); |
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|
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$doCopy = true; |
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if (!$overwriteNewerFiles && null === parse_url($originFile, \PHP_URL_HOST) && is_file($targetFile)) { |
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$doCopy = filemtime($originFile) > filemtime($targetFile); |
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} |
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|
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if ($doCopy) { |
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// https://bugs.php.net/64634 |
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if (false === $source = @fopen($originFile, 'r')) { |
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throw new IOException(sprintf('Failed to copy "%s" to "%s" because source file could not be opened for reading.', $originFile, $targetFile), 0, null, $originFile); |
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} |
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|
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// Stream context created to allow files overwrite when using FTP stream wrapper - disabled by default |
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if (false === $target = @fopen($targetFile, 'w', null, stream_context_create(['ftp' => ['overwrite' => true]]))) { |
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throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing.', $originFile, $targetFile), 0, null, $originFile); |
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} |
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|
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$bytesCopied = stream_copy_to_stream($source, $target); |
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fclose($source); |
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fclose($target); |
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unset($source, $target); |
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|
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if (!is_file($targetFile)) { |
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throw new IOException(sprintf('Failed to copy "%s" to "%s".', $originFile, $targetFile), 0, null, $originFile); |
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} |
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|
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if ($originIsLocal) { |
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// Like `cp`, preserve executable permission bits |
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@chmod($targetFile, fileperms($targetFile) | (fileperms($originFile) & 0111)); |
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|
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if ($bytesCopied !== $bytesOrigin = filesize($originFile)) { |
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throw new IOException(sprintf('Failed to copy the whole content of "%s" to "%s" (%g of %g bytes copied).', $originFile, $targetFile, $bytesCopied, $bytesOrigin), 0, null, $originFile); |
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} |
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} |
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} |
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} |
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|
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/** |
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* Creates a directory recursively. |
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* |
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* @param string|iterable $dirs The directory path |
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* @param int $mode The directory mode |
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* |
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* @throws IOException On any directory creation failure |
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*/ |
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public function mkdir($dirs, $mode = 0777) |
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{ |
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foreach ($this->toIterable($dirs) as $dir) { |
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if (is_dir($dir)) { |
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continue; |
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} |
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|
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if (!self::box('mkdir', $dir, $mode, true)) { |
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if (!is_dir($dir)) { |
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// The directory was not created by a concurrent process. Let's throw an exception with a developer friendly error message if we have one |
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if (self::$lastError) { |
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throw new IOException(sprintf('Failed to create "%s": ', $dir).self::$lastError, 0, null, $dir); |
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} |
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throw new IOException(sprintf('Failed to create "%s".', $dir), 0, null, $dir); |
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} |
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} |
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} |
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} |
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|
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/** |
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* Checks the existence of files or directories. |
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* |
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* @param string|iterable $files A filename, an array of files, or a \Traversable instance to check |
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* |
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* @return bool true if the file exists, false otherwise |
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*/ |
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public function exists($files) |
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{ |
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$maxPathLength = \PHP_MAXPATHLEN - 2; |
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|
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foreach ($this->toIterable($files) as $file) { |
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if (\strlen($file) > $maxPathLength) { |
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throw new IOException(sprintf('Could not check if file exist because path length exceeds %d characters.', $maxPathLength), 0, null, $file); |
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} |
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|
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if (!file_exists($file)) { |
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return false; |
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} |
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} |
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|
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return true; |
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} |
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|
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/** |
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* Sets access and modification time of file. |
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* |
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* @param string|iterable $files A filename, an array of files, or a \Traversable instance to create |
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* @param int|null $time The touch time as a Unix timestamp, if not supplied the current system time is used |
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* @param int|null $atime The access time as a Unix timestamp, if not supplied the current system time is used |
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* |
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* @throws IOException When touch fails |
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*/ |
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public function touch($files, $time = null, $atime = null) |
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{ |
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foreach ($this->toIterable($files) as $file) { |
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$touch = $time ? @touch($file, $time, $atime) : @touch($file); |
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if (true !== $touch) { |
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throw new IOException(sprintf('Failed to touch "%s".', $file), 0, null, $file); |
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} |
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} |
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} |
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|
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/** |
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* Removes files or directories. |
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* |
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* @param string|iterable $files A filename, an array of files, or a \Traversable instance to remove |
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* |
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* @throws IOException When removal fails |
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*/ |
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public function remove($files) |
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{ |
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if ($files instanceof \Traversable) { |
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$files = iterator_to_array($files, false); |
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} elseif (!\is_array($files)) { |
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$files = [$files]; |
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} |
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$files = array_reverse($files); |
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foreach ($files as $file) { |
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if (is_link($file)) { |
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// See https://bugs.php.net/52176 |
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if (!(self::box('unlink', $file) || '\\' !== \DIRECTORY_SEPARATOR || self::box('rmdir', $file)) && file_exists($file)) { |
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throw new IOException(sprintf('Failed to remove symlink "%s": ', $file).self::$lastError); |
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} |
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} elseif (is_dir($file)) { |
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$this->remove(new \FilesystemIterator($file, \FilesystemIterator::CURRENT_AS_PATHNAME | \FilesystemIterator::SKIP_DOTS)); |
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|
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if (!self::box('rmdir', $file) && file_exists($file)) { |
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throw new IOException(sprintf('Failed to remove directory "%s": ', $file).self::$lastError); |
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} |
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} elseif (!self::box('unlink', $file) && (false !== strpos(self::$lastError, 'Permission denied') || file_exists($file))) { |
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throw new IOException(sprintf('Failed to remove file "%s": ', $file).self::$lastError); |
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} |
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} |
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} |
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|
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/** |
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* Change mode for an array of files or directories. |
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* |
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* @param string|iterable $files A filename, an array of files, or a \Traversable instance to change mode |
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* @param int $mode The new mode (octal) |
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* @param int $umask The mode mask (octal) |
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* @param bool $recursive Whether change the mod recursively or not |
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* |
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* @throws IOException When the change fails |
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*/ |
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public function chmod($files, $mode, $umask = 0000, $recursive = false) |
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{ |
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foreach ($this->toIterable($files) as $file) { |
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if ((\PHP_VERSION_ID < 80000 || \is_int($mode)) && true !== @chmod($file, $mode & ~$umask)) { |
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throw new IOException(sprintf('Failed to chmod file "%s".', $file), 0, null, $file); |
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} |
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if ($recursive && is_dir($file) && !is_link($file)) { |
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$this->chmod(new \FilesystemIterator($file), $mode, $umask, true); |
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} |
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} |
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} |
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|
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/** |
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* Change the owner of an array of files or directories. |
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* |
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* @param string|iterable $files A filename, an array of files, or a \Traversable instance to change owner |
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* @param string|int $user A user name or number |
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* @param bool $recursive Whether change the owner recursively or not |
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* |
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* @throws IOException When the change fails |
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*/ |
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public function chown($files, $user, $recursive = false) |
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{ |
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foreach ($this->toIterable($files) as $file) { |
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if ($recursive && is_dir($file) && !is_link($file)) { |
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$this->chown(new \FilesystemIterator($file), $user, true); |
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} |
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if (is_link($file) && \function_exists('lchown')) { |
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if (true !== @lchown($file, $user)) { |
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throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file); |
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} |
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} else { |
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if (true !== @chown($file, $user)) { |
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throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file); |
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} |
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} |
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} |
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} |
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|
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/** |
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* Change the group of an array of files or directories. |
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* |
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* @param string|iterable $files A filename, an array of files, or a \Traversable instance to change group |
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* @param string|int $group A group name or number |
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* @param bool $recursive Whether change the group recursively or not |
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* |
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* @throws IOException When the change fails |
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*/ |
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public function chgrp($files, $group, $recursive = false) |
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{ |
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foreach ($this->toIterable($files) as $file) { |
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if ($recursive && is_dir($file) && !is_link($file)) { |
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$this->chgrp(new \FilesystemIterator($file), $group, true); |
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} |
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if (is_link($file) && \function_exists('lchgrp')) { |
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if (true !== @lchgrp($file, $group) || (\defined('HHVM_VERSION') && !posix_getgrnam($group))) { |
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throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file); |
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} |
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} else { |
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if (true !== @chgrp($file, $group)) { |
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throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file); |
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} |
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} |
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} |
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} |
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|
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/** |
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* Renames a file or a directory. |
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* |
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* @param string $origin The origin filename or directory |
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* @param string $target The new filename or directory |
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* @param bool $overwrite Whether to overwrite the target if it already exists |
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* |
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* @throws IOException When target file or directory already exists |
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* @throws IOException When origin cannot be renamed |
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*/ |
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public function rename($origin, $target, $overwrite = false) |
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{ |
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// we check that target does not exist |
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if (!$overwrite && $this->isReadable($target)) { |
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throw new IOException(sprintf('Cannot rename because the target "%s" already exists.', $target), 0, null, $target); |
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} |
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|
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if (true !== @rename($origin, $target)) { |
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if (is_dir($origin)) { |
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// See https://bugs.php.net/54097 & https://php.net/rename#113943 |
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$this->mirror($origin, $target, null, ['override' => $overwrite, 'delete' => $overwrite]); |
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$this->remove($origin); |
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|
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return; |
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} |
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throw new IOException(sprintf('Cannot rename "%s" to "%s".', $origin, $target), 0, null, $target); |
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} |
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} |
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|
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/** |
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* Tells whether a file exists and is readable. |
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* |
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* @param string $filename Path to the file |
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* |
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* @return bool |
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* |
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* @throws IOException When windows path is longer than 258 characters |
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*/ |
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private function isReadable($filename) |
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{ |
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$maxPathLength = \PHP_MAXPATHLEN - 2; |
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|
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if (\strlen($filename) > $maxPathLength) { |
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throw new IOException(sprintf('Could not check if file is readable because path length exceeds %d characters.', $maxPathLength), 0, null, $filename); |
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} |
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|
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return is_readable($filename); |
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} |
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|
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/** |
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* Creates a symbolic link or copy a directory. |
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* |
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* @param string $originDir The origin directory path |
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* @param string $targetDir The symbolic link name |
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* @param bool $copyOnWindows Whether to copy files if on Windows |
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* |
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* @throws IOException When symlink fails |
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*/ |
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public function symlink($originDir, $targetDir, $copyOnWindows = false) |
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{ |
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if ('\\' === \DIRECTORY_SEPARATOR) { |
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$originDir = strtr($originDir, '/', '\\'); |
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$targetDir = strtr($targetDir, '/', '\\'); |
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|
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if ($copyOnWindows) { |
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$this->mirror($originDir, $targetDir); |
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|
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return; |
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} |
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} |
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|
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$this->mkdir(\dirname($targetDir)); |
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|
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if (is_link($targetDir)) { |
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if (readlink($targetDir) === $originDir) { |
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return; |
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} |
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$this->remove($targetDir); |
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} |
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|
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if (!self::box('symlink', $originDir, $targetDir)) { |
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$this->linkException($originDir, $targetDir, 'symbolic'); |
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} |
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} |
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|
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/** |
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* Creates a hard link, or several hard links to a file. |
| 351 |
* |
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* @param string $originFile The original file |
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* @param string|string[] $targetFiles The target file(s) |
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* |
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* @throws FileNotFoundException When original file is missing or not a file |
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* @throws IOException When link fails, including if link already exists |
| 357 |
*/ |
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public function hardlink($originFile, $targetFiles) |
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{ |
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if (!$this->exists($originFile)) { |
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throw new FileNotFoundException(null, 0, null, $originFile); |
| 362 |
} |
| 363 |
|
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if (!is_file($originFile)) { |
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throw new FileNotFoundException(sprintf('Origin file "%s" is not a file.', $originFile)); |
| 366 |
} |
| 367 |
|
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foreach ($this->toIterable($targetFiles) as $targetFile) { |
| 369 |
if (is_file($targetFile)) { |
| 370 |
if (fileinode($originFile) === fileinode($targetFile)) { |
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continue; |
| 372 |
} |
| 373 |
$this->remove($targetFile); |
| 374 |
} |
| 375 |
|
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if (!self::box('link', $originFile, $targetFile)) { |
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$this->linkException($originFile, $targetFile, 'hard'); |
| 378 |
} |
| 379 |
} |
| 380 |
} |
| 381 |
|
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/** |
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* @param string $origin |
| 384 |
* @param string $target |
| 385 |
* @param string $linkType Name of the link type, typically 'symbolic' or 'hard' |
| 386 |
*/ |
| 387 |
private function linkException($origin, $target, $linkType) |
| 388 |
{ |
| 389 |
if (self::$lastError) { |
| 390 |
if ('\\' === \DIRECTORY_SEPARATOR && false !== strpos(self::$lastError, 'error code(1314)')) { |
| 391 |
throw new IOException(sprintf('Unable to create "%s" link due to error code 1314: \'A required privilege is not held by the client\'. Do you have the required Administrator-rights?', $linkType), 0, null, $target); |
| 392 |
} |
| 393 |
} |
| 394 |
throw new IOException(sprintf('Failed to create "%s" link from "%s" to "%s".', $linkType, $origin, $target), 0, null, $target); |
| 395 |
} |
| 396 |
|
| 397 |
/** |
| 398 |
* Resolves links in paths. |
| 399 |
* |
| 400 |
* With $canonicalize = false (default) |
| 401 |
* - if $path does not exist or is not a link, returns null |
| 402 |
* - if $path is a link, returns the next direct target of the link without considering the existence of the target |
| 403 |
* |
| 404 |
* With $canonicalize = true |
| 405 |
* - if $path does not exist, returns null |
| 406 |
* - if $path exists, returns its absolute fully resolved final version |
| 407 |
* |
| 408 |
* @param string $path A filesystem path |
| 409 |
* @param bool $canonicalize Whether or not to return a canonicalized path |
| 410 |
* |
| 411 |
* @return string|null |
| 412 |
*/ |
| 413 |
public function readlink($path, $canonicalize = false) |
| 414 |
{ |
| 415 |
if (!$canonicalize && !is_link($path)) { |
| 416 |
return null; |
| 417 |
} |
| 418 |
|
| 419 |
if ($canonicalize) { |
| 420 |
if (!$this->exists($path)) { |
| 421 |
return null; |
| 422 |
} |
| 423 |
|
| 424 |
if ('\\' === \DIRECTORY_SEPARATOR) { |
| 425 |
$path = readlink($path); |
| 426 |
} |
| 427 |
|
| 428 |
return realpath($path); |
| 429 |
} |
| 430 |
|
| 431 |
if ('\\' === \DIRECTORY_SEPARATOR) { |
| 432 |
return realpath($path); |
| 433 |
} |
| 434 |
|
| 435 |
return readlink($path); |
| 436 |
} |
| 437 |
|
| 438 |
/** |
| 439 |
* Given an existing path, convert it to a path relative to a given starting path. |
| 440 |
* |
| 441 |
* @param string $endPath Absolute path of target |
| 442 |
* @param string $startPath Absolute path where traversal begins |
| 443 |
* |
| 444 |
* @return string Path of target relative to starting path |
| 445 |
*/ |
| 446 |
public function makePathRelative($endPath, $startPath) |
| 447 |
{ |
| 448 |
if (!$this->isAbsolutePath($endPath) || !$this->isAbsolutePath($startPath)) { |
| 449 |
@trigger_error(sprintf('Support for passing relative paths to %s() is deprecated since Symfony 3.4 and will be removed in 4.0.', __METHOD__), \E_USER_DEPRECATED); |
| 450 |
} |
| 451 |
|
| 452 |
// Normalize separators on Windows |
| 453 |
if ('\\' === \DIRECTORY_SEPARATOR) { |
| 454 |
$endPath = str_replace('\\', '/', $endPath); |
| 455 |
$startPath = str_replace('\\', '/', $startPath); |
| 456 |
} |
| 457 |
|
| 458 |
$splitDriveLetter = function ($path) { |
| 459 |
return (\strlen($path) > 2 && ':' === $path[1] && '/' === $path[2] && ctype_alpha($path[0])) |
| 460 |
? [substr($path, 2), strtoupper($path[0])] |
| 461 |
: [$path, null]; |
| 462 |
}; |
| 463 |
|
| 464 |
$splitPath = function ($path, $absolute) { |
| 465 |
$result = []; |
| 466 |
|
| 467 |
foreach (explode('/', trim($path, '/')) as $segment) { |
| 468 |
if ('..' === $segment && ($absolute || \count($result))) { |
| 469 |
array_pop($result); |
| 470 |
} elseif ('.' !== $segment && '' !== $segment) { |
| 471 |
$result[] = $segment; |
| 472 |
} |
| 473 |
} |
| 474 |
|
| 475 |
return $result; |
| 476 |
}; |
| 477 |
|
| 478 |
list($endPath, $endDriveLetter) = $splitDriveLetter($endPath); |
| 479 |
list($startPath, $startDriveLetter) = $splitDriveLetter($startPath); |
| 480 |
|
| 481 |
$startPathArr = $splitPath($startPath, static::isAbsolutePath($startPath)); |
| 482 |
$endPathArr = $splitPath($endPath, static::isAbsolutePath($endPath)); |
| 483 |
|
| 484 |
if ($endDriveLetter && $startDriveLetter && $endDriveLetter != $startDriveLetter) { |
| 485 |
// End path is on another drive, so no relative path exists |
| 486 |
return $endDriveLetter.':/'.($endPathArr ? implode('/', $endPathArr).'/' : ''); |
| 487 |
} |
| 488 |
|
| 489 |
// Find for which directory the common path stops |
| 490 |
$index = 0; |
| 491 |
while (isset($startPathArr[$index]) && isset($endPathArr[$index]) && $startPathArr[$index] === $endPathArr[$index]) { |
| 492 |
++$index; |
| 493 |
} |
| 494 |
|
| 495 |
// Determine how deep the start path is relative to the common path (ie, "web/bundles" = 2 levels) |
| 496 |
if (1 === \count($startPathArr) && '' === $startPathArr[0]) { |
| 497 |
$depth = 0; |
| 498 |
} else { |
| 499 |
$depth = \count($startPathArr) - $index; |
| 500 |
} |
| 501 |
|
| 502 |
// Repeated "../" for each level need to reach the common path |
| 503 |
$traverser = str_repeat('../', $depth); |
| 504 |
|
| 505 |
$endPathRemainder = implode('/', \array_slice($endPathArr, $index)); |
| 506 |
|
| 507 |
// Construct $endPath from traversing to the common path, then to the remaining $endPath |
| 508 |
$relativePath = $traverser.('' !== $endPathRemainder ? $endPathRemainder.'/' : ''); |
| 509 |
|
| 510 |
return '' === $relativePath ? './' : $relativePath; |
| 511 |
} |
| 512 |
|
| 513 |
/** |
| 514 |
* Mirrors a directory to another. |
| 515 |
* |
| 516 |
* Copies files and directories from the origin directory into the target directory. By default: |
| 517 |
* |
| 518 |
* - existing files in the target directory will be overwritten, except if they are newer (see the `override` option) |
| 519 |
* - files in the target directory that do not exist in the source directory will not be deleted (see the `delete` option) |
| 520 |
* |
| 521 |
* @param string $originDir The origin directory |
| 522 |
* @param string $targetDir The target directory |
| 523 |
* @param \Traversable|null $iterator Iterator that filters which files and directories to copy, if null a recursive iterator is created |
| 524 |
* @param array $options An array of boolean options |
| 525 |
* Valid options are: |
| 526 |
* - $options['override'] If true, target files newer than origin files are overwritten (see copy(), defaults to false) |
| 527 |
* - $options['copy_on_windows'] Whether to copy files instead of links on Windows (see symlink(), defaults to false) |
| 528 |
* - $options['delete'] Whether to delete files that are not in the source directory (defaults to false) |
| 529 |
* |
| 530 |
* @throws IOException When file type is unknown |
| 531 |
*/ |
| 532 |
public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = []) |
| 533 |
{ |
| 534 |
$targetDir = rtrim($targetDir, '/\\'); |
| 535 |
$originDir = rtrim($originDir, '/\\'); |
| 536 |
$originDirLen = \strlen($originDir); |
| 537 |
|
| 538 |
// Iterate in destination folder to remove obsolete entries |
| 539 |
if ($this->exists($targetDir) && isset($options['delete']) && $options['delete']) { |
| 540 |
$deleteIterator = $iterator; |
| 541 |
if (null === $deleteIterator) { |
| 542 |
$flags = \FilesystemIterator::SKIP_DOTS; |
| 543 |
$deleteIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($targetDir, $flags), \RecursiveIteratorIterator::CHILD_FIRST); |
| 544 |
} |
| 545 |
$targetDirLen = \strlen($targetDir); |
| 546 |
foreach ($deleteIterator as $file) { |
| 547 |
$origin = $originDir.substr($file->getPathname(), $targetDirLen); |
| 548 |
if (!$this->exists($origin)) { |
| 549 |
$this->remove($file); |
| 550 |
} |
| 551 |
} |
| 552 |
} |
| 553 |
|
| 554 |
$copyOnWindows = false; |
| 555 |
if (isset($options['copy_on_windows'])) { |
| 556 |
$copyOnWindows = $options['copy_on_windows']; |
| 557 |
} |
| 558 |
|
| 559 |
if (null === $iterator) { |
| 560 |
$flags = $copyOnWindows ? \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS : \FilesystemIterator::SKIP_DOTS; |
| 561 |
$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($originDir, $flags), \RecursiveIteratorIterator::SELF_FIRST); |
| 562 |
} |
| 563 |
|
| 564 |
if ($this->exists($originDir)) { |
| 565 |
$this->mkdir($targetDir); |
| 566 |
} |
| 567 |
|
| 568 |
foreach ($iterator as $file) { |
| 569 |
$target = $targetDir.substr($file->getPathname(), $originDirLen); |
| 570 |
|
| 571 |
if ($copyOnWindows) { |
| 572 |
if (is_file($file)) { |
| 573 |
$this->copy($file, $target, isset($options['override']) ? $options['override'] : false); |
| 574 |
} elseif (is_dir($file)) { |
| 575 |
$this->mkdir($target); |
| 576 |
} else { |
| 577 |
throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file); |
| 578 |
} |
| 579 |
} else { |
| 580 |
if (is_link($file)) { |
| 581 |
$this->symlink($file->getLinkTarget(), $target); |
| 582 |
} elseif (is_dir($file)) { |
| 583 |
$this->mkdir($target); |
| 584 |
} elseif (is_file($file)) { |
| 585 |
$this->copy($file, $target, isset($options['override']) ? $options['override'] : false); |
| 586 |
} else { |
| 587 |
throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file); |
| 588 |
} |
| 589 |
} |
| 590 |
} |
| 591 |
} |
| 592 |
|
| 593 |
/** |
| 594 |
* Returns whether the file path is an absolute path. |
| 595 |
* |
| 596 |
* @param string $file A file path |
| 597 |
* |
| 598 |
* @return bool |
| 599 |
*/ |
| 600 |
public function isAbsolutePath($file) |
| 601 |
{ |
| 602 |
return '' !== (string) $file && (strspn($file, '/\\', 0, 1) |
| 603 |
|| (\strlen($file) > 3 && ctype_alpha($file[0]) |
| 604 |
&& ':' === $file[1] |
| 605 |
&& strspn($file, '/\\', 2, 1) |
| 606 |
) |
| 607 |
|| null !== parse_url($file, \PHP_URL_SCHEME) |
| 608 |
); |
| 609 |
} |
| 610 |
|
| 611 |
/** |
| 612 |
* Creates a temporary file with support for custom stream wrappers. |
| 613 |
* |
| 614 |
* @param string $dir The directory where the temporary filename will be created |
| 615 |
* @param string $prefix The prefix of the generated temporary filename |
| 616 |
* Note: Windows uses only the first three characters of prefix |
| 617 |
* |
| 618 |
* @return string The new temporary filename (with path), or throw an exception on failure |
| 619 |
*/ |
| 620 |
public function tempnam($dir, $prefix) |
| 621 |
{ |
| 622 |
list($scheme, $hierarchy) = $this->getSchemeAndHierarchy($dir); |
| 623 |
|
| 624 |
// If no scheme or scheme is "file" or "gs" (Google Cloud) create temp file in local filesystem |
| 625 |
if (null === $scheme || 'file' === $scheme || 'gs' === $scheme) { |
| 626 |
$tmpFile = @tempnam($hierarchy, $prefix); |
| 627 |
|
| 628 |
// If tempnam failed or no scheme return the filename otherwise prepend the scheme |
| 629 |
if (false !== $tmpFile) { |
| 630 |
if (null !== $scheme && 'gs' !== $scheme) { |
| 631 |
return $scheme.'://'.$tmpFile; |
| 632 |
} |
| 633 |
|
| 634 |
return $tmpFile; |
| 635 |
} |
| 636 |
|
| 637 |
throw new IOException('A temporary file could not be created.'); |
| 638 |
} |
| 639 |
|
| 640 |
// Loop until we create a valid temp file or have reached 10 attempts |
| 641 |
for ($i = 0; $i < 10; ++$i) { |
| 642 |
// Create a unique filename |
| 643 |
$tmpFile = $dir.'/'.$prefix.uniqid(mt_rand(), true); |
| 644 |
|
| 645 |
// Use fopen instead of file_exists as some streams do not support stat |
| 646 |
// Use mode 'x+' to atomically check existence and create to avoid a TOCTOU vulnerability |
| 647 |
$handle = @fopen($tmpFile, 'x+'); |
| 648 |
|
| 649 |
// If unsuccessful restart the loop |
| 650 |
if (false === $handle) { |
| 651 |
continue; |
| 652 |
} |
| 653 |
|
| 654 |
// Close the file if it was successfully opened |
| 655 |
@fclose($handle); |
| 656 |
|
| 657 |
return $tmpFile; |
| 658 |
} |
| 659 |
|
| 660 |
throw new IOException('A temporary file could not be created.'); |
| 661 |
} |
| 662 |
|
| 663 |
/** |
| 664 |
* Atomically dumps content into a file. |
| 665 |
* |
| 666 |
* @param string $filename The file to be written to |
| 667 |
* @param string $content The data to write into the file |
| 668 |
* |
| 669 |
* @throws IOException if the file cannot be written to |
| 670 |
*/ |
| 671 |
public function dumpFile($filename, $content) |
| 672 |
{ |
| 673 |
$dir = \dirname($filename); |
| 674 |
|
| 675 |
if (!is_dir($dir)) { |
| 676 |
$this->mkdir($dir); |
| 677 |
} |
| 678 |
|
| 679 |
if (!is_writable($dir)) { |
| 680 |
throw new IOException(sprintf('Unable to write to the "%s" directory.', $dir), 0, null, $dir); |
| 681 |
} |
| 682 |
|
| 683 |
// Will create a temp file with 0600 access rights |
| 684 |
// when the filesystem supports chmod. |
| 685 |
$tmpFile = $this->tempnam($dir, basename($filename)); |
| 686 |
|
| 687 |
if (false === @file_put_contents($tmpFile, $content)) { |
| 688 |
throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename); |
| 689 |
} |
| 690 |
|
| 691 |
@chmod($tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask()); |
| 692 |
|
| 693 |
$this->rename($tmpFile, $filename, true); |
| 694 |
} |
| 695 |
|
| 696 |
/** |
| 697 |
* Appends content to an existing file. |
| 698 |
* |
| 699 |
* @param string $filename The file to which to append content |
| 700 |
* @param string $content The content to append |
| 701 |
* |
| 702 |
* @throws IOException If the file is not writable |
| 703 |
*/ |
| 704 |
public function appendToFile($filename, $content) |
| 705 |
{ |
| 706 |
$dir = \dirname($filename); |
| 707 |
|
| 708 |
if (!is_dir($dir)) { |
| 709 |
$this->mkdir($dir); |
| 710 |
} |
| 711 |
|
| 712 |
if (!is_writable($dir)) { |
| 713 |
throw new IOException(sprintf('Unable to write to the "%s" directory.', $dir), 0, null, $dir); |
| 714 |
} |
| 715 |
|
| 716 |
if (false === @file_put_contents($filename, $content, \FILE_APPEND)) { |
| 717 |
throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename); |
| 718 |
} |
| 719 |
} |
| 720 |
|
| 721 |
/** |
| 722 |
* @param mixed $files |
| 723 |
* |
| 724 |
* @return array|\Traversable |
| 725 |
*/ |
| 726 |
private function toIterable($files) |
| 727 |
{ |
| 728 |
return \is_array($files) || $files instanceof \Traversable ? $files : [$files]; |
| 729 |
} |
| 730 |
|
| 731 |
/** |
| 732 |
* Gets a 2-tuple of scheme (may be null) and hierarchical part of a filename (e.g. file:///tmp -> [file, tmp]). |
| 733 |
* |
| 734 |
* @param string $filename The filename to be parsed |
| 735 |
* |
| 736 |
* @return array The filename scheme and hierarchical part |
| 737 |
*/ |
| 738 |
private function getSchemeAndHierarchy($filename) |
| 739 |
{ |
| 740 |
$components = explode('://', $filename, 2); |
| 741 |
|
| 742 |
return 2 === \count($components) ? [$components[0], $components[1]] : [null, $components[0]]; |
| 743 |
} |
| 744 |
|
| 745 |
/** |
| 746 |
* @param callable $func |
| 747 |
* |
| 748 |
* @return mixed |
| 749 |
*/ |
| 750 |
private static function box($func) |
| 751 |
{ |
| 752 |
self::$lastError = null; |
| 753 |
set_error_handler(__CLASS__.'::handleError'); |
| 754 |
try { |
| 755 |
$result = \call_user_func_array($func, \array_slice(\func_get_args(), 1)); |
| 756 |
restore_error_handler(); |
| 757 |
|
| 758 |
return $result; |
| 759 |
} catch (\Throwable $e) { |
| 760 |
} catch (\Exception $e) { |
| 761 |
} |
| 762 |
restore_error_handler(); |
| 763 |
|
| 764 |
throw $e; |
| 765 |
} |
| 766 |
|
| 767 |
/** |
| 768 |
* @internal |
| 769 |
*/ |
| 770 |
public static function handleError($type, $msg) |
| 771 |
{ |
| 772 |
self::$lastError = $msg; |
| 773 |
} |
| 774 |
} |
| 775 |
|
