vendor/symfony/filesystem/Filesystem.php line 513
<?php/** This file is part of the Symfony package.** (c) Fabien Potencier <fabien@symfony.com>** For the full copyright and license information, please view the LICENSE* file that was distributed with this source code.*/namespace Symfony\Component\Filesystem;use Symfony\Component\Filesystem\Exception\FileNotFoundException;use Symfony\Component\Filesystem\Exception\InvalidArgumentException;use Symfony\Component\Filesystem\Exception\IOException;/*** Provides basic utility to manipulate the file system.** @author Fabien Potencier <fabien@symfony.com>*/class Filesystem{private static $lastError;/*** Copies a file.** If the target file is older than the origin file, it's always overwritten.* If the target file is newer, it is overwritten only when the* $overwriteNewerFiles option is set to true.** @throws FileNotFoundException When originFile doesn't exist* @throws IOException When copy fails*/public function copy(string $originFile, string $targetFile, bool $overwriteNewerFiles = false){$originIsLocal = stream_is_local($originFile) || 0 === stripos($originFile, 'file://');if ($originIsLocal && !is_file($originFile)) {throw new FileNotFoundException(sprintf('Failed to copy "%s" because file does not exist.', $originFile), 0, null, $originFile);}$this->mkdir(\dirname($targetFile));$doCopy = true;if (!$overwriteNewerFiles && null === parse_url($originFile, \PHP_URL_HOST) && is_file($targetFile)) {$doCopy = filemtime($originFile) > filemtime($targetFile);}if ($doCopy) {// https://bugs.php.net/64634if (!$source = self::box('fopen', $originFile, 'r')) {throw new IOException(sprintf('Failed to copy "%s" to "%s" because source file could not be opened for reading: ', $originFile, $targetFile).self::$lastError, 0, null, $originFile);}// Stream context created to allow files overwrite when using FTP stream wrapper - disabled by defaultif (!$target = self::box('fopen', $targetFile, 'w', false, stream_context_create(['ftp' => ['overwrite' => true]]))) {throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing: ', $originFile, $targetFile).self::$lastError, 0, null, $originFile);}$bytesCopied = stream_copy_to_stream($source, $target);fclose($source);fclose($target);unset($source, $target);if (!is_file($targetFile)) {throw new IOException(sprintf('Failed to copy "%s" to "%s".', $originFile, $targetFile), 0, null, $originFile);}if ($originIsLocal) {// Like `cp`, preserve executable permission bitsself::box('chmod', $targetFile, fileperms($targetFile) | (fileperms($originFile) & 0111));if ($bytesCopied !== $bytesOrigin = filesize($originFile)) {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);}}}}/*** Creates a directory recursively.** @throws IOException On any directory creation failure*/public function mkdir(string|iterable $dirs, int $mode = 0777){foreach ($this->toIterable($dirs) as $dir) {if (is_dir($dir)) {continue;}if (!self::box('mkdir', $dir, $mode, true) && !is_dir($dir)) {throw new IOException(sprintf('Failed to create "%s": ', $dir).self::$lastError, 0, null, $dir);}}}/*** Checks the existence of files or directories.*/public function exists(string|iterable $files): bool{$maxPathLength = \PHP_MAXPATHLEN - 2;foreach ($this->toIterable($files) as $file) {if (\strlen($file) > $maxPathLength) {throw new IOException(sprintf('Could not check if file exist because path length exceeds %d characters.', $maxPathLength), 0, null, $file);}if (!file_exists($file)) {return false;}}return true;}/*** Sets access and modification time of file.** @param int|null $time The touch time as a Unix timestamp, if not supplied the current system time is used* @param int|null $atime The access time as a Unix timestamp, if not supplied the current system time is used** @throws IOException When touch fails*/public function touch(string|iterable $files, int $time = null, int $atime = null){foreach ($this->toIterable($files) as $file) {if (!($time ? self::box('touch', $file, $time, $atime) : self::box('touch', $file))) {throw new IOException(sprintf('Failed to touch "%s": ', $file).self::$lastError, 0, null, $file);}}}/*** Removes files or directories.** @throws IOException When removal fails*/public function remove(string|iterable $files){if ($files instanceof \Traversable) {$files = iterator_to_array($files, false);} elseif (!\is_array($files)) {$files = [$files];}self::doRemove($files, false);}private static function doRemove(array $files, bool $isRecursive): void{$files = array_reverse($files);foreach ($files as $file) {if (is_link($file)) {// See https://bugs.php.net/52176if (!(self::box('unlink', $file) || '\\' !== \DIRECTORY_SEPARATOR || self::box('rmdir', $file)) && file_exists($file)) {throw new IOException(sprintf('Failed to remove symlink "%s": ', $file).self::$lastError);}} elseif (is_dir($file)) {if (!$isRecursive) {$tmpName = \dirname(realpath($file)).'/.'.strrev(strtr(base64_encode(random_bytes(2)), '/=', '-.'));if (file_exists($tmpName)) {try {self::doRemove([$tmpName], true);} catch (IOException) {}}if (!file_exists($tmpName) && self::box('rename', $file, $tmpName)) {$origFile = $file;$file = $tmpName;} else {$origFile = null;}}$filesystemIterator = new \FilesystemIterator($file, \FilesystemIterator::CURRENT_AS_PATHNAME | \FilesystemIterator::SKIP_DOTS);self::doRemove(iterator_to_array($filesystemIterator, true), true);if (!self::box('rmdir', $file) && file_exists($file) && !$isRecursive) {$lastError = self::$lastError;if (null !== $origFile && self::box('rename', $file, $origFile)) {$file = $origFile;}throw new IOException(sprintf('Failed to remove directory "%s": ', $file).$lastError);}} elseif (!self::box('unlink', $file) && (str_contains(self::$lastError, 'Permission denied') || file_exists($file))) {throw new IOException(sprintf('Failed to remove file "%s": ', $file).self::$lastError);}}}/*** Change mode for an array of files or directories.** @param int $mode The new mode (octal)* @param int $umask The mode mask (octal)* @param bool $recursive Whether change the mod recursively or not** @throws IOException When the change fails*/public function chmod(string|iterable $files, int $mode, int $umask = 0000, bool $recursive = false){foreach ($this->toIterable($files) as $file) {if (\is_int($mode) && !self::box('chmod', $file, $mode & ~$umask)) {throw new IOException(sprintf('Failed to chmod file "%s": ', $file).self::$lastError, 0, null, $file);}if ($recursive && is_dir($file) && !is_link($file)) {$this->chmod(new \FilesystemIterator($file), $mode, $umask, true);}}}/*** Change the owner of an array of files or directories.** @param string|int $user A user name or number* @param bool $recursive Whether change the owner recursively or not** @throws IOException When the change fails*/public function chown(string|iterable $files, string|int $user, bool $recursive = false){foreach ($this->toIterable($files) as $file) {if ($recursive && is_dir($file) && !is_link($file)) {$this->chown(new \FilesystemIterator($file), $user, true);}if (is_link($file) && \function_exists('lchown')) {if (!self::box('lchown', $file, $user)) {throw new IOException(sprintf('Failed to chown file "%s": ', $file).self::$lastError, 0, null, $file);}} else {if (!self::box('chown', $file, $user)) {throw new IOException(sprintf('Failed to chown file "%s": ', $file).self::$lastError, 0, null, $file);}}}}/*** Change the group of an array of files or directories.** @param string|int $group A group name or number* @param bool $recursive Whether change the group recursively or not** @throws IOException When the change fails*/public function chgrp(string|iterable $files, string|int $group, bool $recursive = false){foreach ($this->toIterable($files) as $file) {if ($recursive && is_dir($file) && !is_link($file)) {$this->chgrp(new \FilesystemIterator($file), $group, true);}if (is_link($file) && \function_exists('lchgrp')) {if (!self::box('lchgrp', $file, $group)) {throw new IOException(sprintf('Failed to chgrp file "%s": ', $file).self::$lastError, 0, null, $file);}} else {if (!self::box('chgrp', $file, $group)) {throw new IOException(sprintf('Failed to chgrp file "%s": ', $file).self::$lastError, 0, null, $file);}}}}/*** Renames a file or a directory.** @throws IOException When target file or directory already exists* @throws IOException When origin cannot be renamed*/public function rename(string $origin, string $target, bool $overwrite = false){// we check that target does not existif (!$overwrite && $this->isReadable($target)) {throw new IOException(sprintf('Cannot rename because the target "%s" already exists.', $target), 0, null, $target);}if (!self::box('rename', $origin, $target)) {if (is_dir($origin)) {// See https://bugs.php.net/54097 & https://php.net/rename#113943$this->mirror($origin, $target, null, ['override' => $overwrite, 'delete' => $overwrite]);$this->remove($origin);return;}throw new IOException(sprintf('Cannot rename "%s" to "%s": ', $origin, $target).self::$lastError, 0, null, $target);}}/*** Tells whether a file exists and is readable.** @throws IOException When windows path is longer than 258 characters*/private function isReadable(string $filename): bool{$maxPathLength = \PHP_MAXPATHLEN - 2;if (\strlen($filename) > $maxPathLength) {throw new IOException(sprintf('Could not check if file is readable because path length exceeds %d characters.', $maxPathLength), 0, null, $filename);}return is_readable($filename);}/*** Creates a symbolic link or copy a directory.** @throws IOException When symlink fails*/public function symlink(string $originDir, string $targetDir, bool $copyOnWindows = false){self::assertFunctionExists('symlink');if ('\\' === \DIRECTORY_SEPARATOR) {$originDir = strtr($originDir, '/', '\\');$targetDir = strtr($targetDir, '/', '\\');if ($copyOnWindows) {$this->mirror($originDir, $targetDir);return;}}$this->mkdir(\dirname($targetDir));if (is_link($targetDir)) {if (readlink($targetDir) === $originDir) {return;}$this->remove($targetDir);}if (!self::box('symlink', $originDir, $targetDir)) {$this->linkException($originDir, $targetDir, 'symbolic');}}/*** Creates a hard link, or several hard links to a file.** @param string|string[] $targetFiles The target file(s)** @throws FileNotFoundException When original file is missing or not a file* @throws IOException When link fails, including if link already exists*/public function hardlink(string $originFile, string|iterable $targetFiles){self::assertFunctionExists('link');if (!$this->exists($originFile)) {throw new FileNotFoundException(null, 0, null, $originFile);}if (!is_file($originFile)) {throw new FileNotFoundException(sprintf('Origin file "%s" is not a file.', $originFile));}foreach ($this->toIterable($targetFiles) as $targetFile) {if (is_file($targetFile)) {if (fileinode($originFile) === fileinode($targetFile)) {continue;}$this->remove($targetFile);}if (!self::box('link', $originFile, $targetFile)) {$this->linkException($originFile, $targetFile, 'hard');}}}/*** @param string $linkType Name of the link type, typically 'symbolic' or 'hard'*/private function linkException(string $origin, string $target, string $linkType){if (self::$lastError) {if ('\\' === \DIRECTORY_SEPARATOR && str_contains(self::$lastError, 'error code(1314)')) {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);}}throw new IOException(sprintf('Failed to create "%s" link from "%s" to "%s": ', $linkType, $origin, $target).self::$lastError, 0, null, $target);}/*** Resolves links in paths.** With $canonicalize = false (default)* - if $path does not exist or is not a link, returns null* - if $path is a link, returns the next direct target of the link without considering the existence of the target** With $canonicalize = true* - if $path does not exist, returns null* - if $path exists, returns its absolute fully resolved final version*/public function readlink(string $path, bool $canonicalize = false): ?string{if (!$canonicalize && !is_link($path)) {return null;}if ($canonicalize) {if (!$this->exists($path)) {return null;}return realpath($path);}return readlink($path);}/*** Given an existing path, convert it to a path relative to a given starting path.*/public function makePathRelative(string $endPath, string $startPath): string{if (!$this->isAbsolutePath($startPath)) {throw new InvalidArgumentException(sprintf('The start path "%s" is not absolute.', $startPath));}if (!$this->isAbsolutePath($endPath)) {throw new InvalidArgumentException(sprintf('The end path "%s" is not absolute.', $endPath));}// Normalize separators on Windowsif ('\\' === \DIRECTORY_SEPARATOR) {$endPath = str_replace('\\', '/', $endPath);$startPath = str_replace('\\', '/', $startPath);}$splitDriveLetter = function ($path) {return (\strlen($path) > 2 && ':' === $path[1] && '/' === $path[2] && ctype_alpha($path[0]))? [substr($path, 2), strtoupper($path[0])]: [$path, null];};$splitPath = function ($path) {$result = [];foreach (explode('/', trim($path, '/')) as $segment) {if ('..' === $segment) {array_pop($result);} elseif ('.' !== $segment && '' !== $segment) {$result[] = $segment;}}return $result;};[$endPath, $endDriveLetter] = $splitDriveLetter($endPath);[$startPath, $startDriveLetter] = $splitDriveLetter($startPath);$startPathArr = $splitPath($startPath);$endPathArr = $splitPath($endPath);if ($endDriveLetter && $startDriveLetter && $endDriveLetter != $startDriveLetter) {// End path is on another drive, so no relative path existsreturn $endDriveLetter.':/'.($endPathArr ? implode('/', $endPathArr).'/' : '');}// Find for which directory the common path stops$index = 0;while (isset($startPathArr[$index]) && isset($endPathArr[$index]) && $startPathArr[$index] === $endPathArr[$index]) {++$index;}// Determine how deep the start path is relative to the common path (ie, "web/bundles" = 2 levels)if (1 === \count($startPathArr) && '' === $startPathArr[0]) {$depth = 0;} else {$depth = \count($startPathArr) - $index;}// Repeated "../" for each level need to reach the common path$traverser = str_repeat('../', $depth);$endPathRemainder = implode('/', \array_slice($endPathArr, $index));// Construct $endPath from traversing to the common path, then to the remaining $endPath$relativePath = $traverser.('' !== $endPathRemainder ? $endPathRemainder.'/' : '');return '' === $relativePath ? './' : $relativePath;}/*** Mirrors a directory to another.** Copies files and directories from the origin directory into the target directory. By default:** - existing files in the target directory will be overwritten, except if they are newer (see the `override` option)* - files in the target directory that do not exist in the source directory will not be deleted (see the `delete` option)** @param \Traversable|null $iterator Iterator that filters which files and directories to copy, if null a recursive iterator is created* @param array $options An array of boolean options* Valid options are:* - $options['override'] If true, target files newer than origin files are overwritten (see copy(), defaults to false)* - $options['copy_on_windows'] Whether to copy files instead of links on Windows (see symlink(), defaults to false)* - $options['delete'] Whether to delete files that are not in the source directory (defaults to false)** @throws IOException When file type is unknown*/public function mirror(string $originDir, string $targetDir, \Traversable $iterator = null, array $options = []){$targetDir = rtrim($targetDir, '/\\');$originDir = rtrim($originDir, '/\\');$originDirLen = \strlen($originDir);if (!$this->exists($originDir)) {throw new IOException(sprintf('The origin directory specified "%s" was not found.', $originDir), 0, null, $originDir);}// Iterate in destination folder to remove obsolete entriesif ($this->exists($targetDir) && isset($options['delete']) && $options['delete']) {$deleteIterator = $iterator;if (null === $deleteIterator) {$flags = \FilesystemIterator::SKIP_DOTS;$deleteIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($targetDir, $flags), \RecursiveIteratorIterator::CHILD_FIRST);}$targetDirLen = \strlen($targetDir);foreach ($deleteIterator as $file) {$origin = $originDir.substr($file->getPathname(), $targetDirLen);if (!$this->exists($origin)) {$this->remove($file);}}}$copyOnWindows = $options['copy_on_windows'] ?? false;if (null === $iterator) {$flags = $copyOnWindows ? \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS : \FilesystemIterator::SKIP_DOTS;$iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($originDir, $flags), \RecursiveIteratorIterator::SELF_FIRST);}$this->mkdir($targetDir);$filesCreatedWhileMirroring = [];foreach ($iterator as $file) {if ($file->getPathname() === $targetDir || $file->getRealPath() === $targetDir || isset($filesCreatedWhileMirroring[$file->getRealPath()])) {continue;}$target = $targetDir.substr($file->getPathname(), $originDirLen);$filesCreatedWhileMirroring[$target] = true;if (!$copyOnWindows && is_link($file)) {$this->symlink($file->getLinkTarget(), $target);} elseif (is_dir($file)) {$this->mkdir($target);} elseif (is_file($file)) {$this->copy($file, $target, $options['override'] ?? false);} else {throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file);}}}/*** Returns whether the file path is an absolute path.*/public function isAbsolutePath(string $file): bool{return '' !== $file && (strspn($file, '/\\', 0, 1)|| (\strlen($file) > 3 && ctype_alpha($file[0])&& ':' === $file[1]&& strspn($file, '/\\', 2, 1))|| null !== parse_url($file, \PHP_URL_SCHEME));}/*** Creates a temporary file with support for custom stream wrappers.** @param string $prefix The prefix of the generated temporary filename* Note: Windows uses only the first three characters of prefix* @param string $suffix The suffix of the generated temporary filename** @return string The new temporary filename (with path), or throw an exception on failure*/public function tempnam(string $dir, string $prefix, string $suffix = ''): string{[$scheme, $hierarchy] = $this->getSchemeAndHierarchy($dir);// If no scheme or scheme is "file" or "gs" (Google Cloud) create temp file in local filesystemif ((null === $scheme || 'file' === $scheme || 'gs' === $scheme) && '' === $suffix) {// If tempnam failed or no scheme return the filename otherwise prepend the schemeif ($tmpFile = self::box('tempnam', $hierarchy, $prefix)) {if (null !== $scheme && 'gs' !== $scheme) {return $scheme.'://'.$tmpFile;}return $tmpFile;}throw new IOException('A temporary file could not be created: '.self::$lastError);}// Loop until we create a valid temp file or have reached 10 attemptsfor ($i = 0; $i < 10; ++$i) {// Create a unique filename$tmpFile = $dir.'/'.$prefix.uniqid(mt_rand(), true).$suffix;// Use fopen instead of file_exists as some streams do not support stat// Use mode 'x+' to atomically check existence and create to avoid a TOCTOU vulnerabilityif (!$handle = self::box('fopen', $tmpFile, 'x+')) {continue;}// Close the file if it was successfully openedself::box('fclose', $handle);return $tmpFile;}throw new IOException('A temporary file could not be created: '.self::$lastError);}/*** Atomically dumps content into a file.** @param string|resource $content The data to write into the file** @throws IOException if the file cannot be written to*/public function dumpFile(string $filename, $content){if (\is_array($content)) {throw new \TypeError(sprintf('Argument 2 passed to "%s()" must be string or resource, array given.', __METHOD__));}$dir = \dirname($filename);if (!is_dir($dir)) {$this->mkdir($dir);}// Will create a temp file with 0600 access rights// when the filesystem supports chmod.$tmpFile = $this->tempnam($dir, basename($filename));try {if (false === self::box('file_put_contents', $tmpFile, $content)) {throw new IOException(sprintf('Failed to write file "%s": ', $filename).self::$lastError, 0, null, $filename);}self::box('chmod', $tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask());$this->rename($tmpFile, $filename, true);} finally {if (file_exists($tmpFile)) {self::box('unlink', $tmpFile);}}}/*** Appends content to an existing file.** @param string|resource $content The content to append* @param bool $lock Whether the file should be locked when writing to it** @throws IOException If the file is not writable*/public function appendToFile(string $filename, $content/* , bool $lock = false */){if (\is_array($content)) {throw new \TypeError(sprintf('Argument 2 passed to "%s()" must be string or resource, array given.', __METHOD__));}$dir = \dirname($filename);if (!is_dir($dir)) {$this->mkdir($dir);}$lock = \func_num_args() > 2 && func_get_arg(2);if (false === self::box('file_put_contents', $filename, $content, \FILE_APPEND | ($lock ? \LOCK_EX : 0))) {throw new IOException(sprintf('Failed to write file "%s": ', $filename).self::$lastError, 0, null, $filename);}}private function toIterable(string|iterable $files): iterable{return is_iterable($files) ? $files : [$files];}/*** Gets a 2-tuple of scheme (may be null) and hierarchical part of a filename (e.g. file:///tmp -> [file, tmp]).*/private function getSchemeAndHierarchy(string $filename): array{$components = explode('://', $filename, 2);return 2 === \count($components) ? [$components[0], $components[1]] : [null, $components[0]];}private static function assertFunctionExists(string $func): void{if (!\function_exists($func)) {throw new IOException(sprintf('Unable to perform filesystem operation because the "%s()" function has been disabled.', $func));}}private static function box(string $func, mixed ...$args): mixed{self::assertFunctionExists($func);self::$lastError = null;set_error_handler(__CLASS__.'::handleError');try {return $func(...$args);} finally {restore_error_handler();}}/*** @internal*/public static function handleError(int $type, string $msg){self::$lastError = $msg;}}