<?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 $lastError;
public function copy($originFile, $targetFile, $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) {
if (false === $source = @fopen($originFile, 'r')) {
throw new IOException(sprintf('Failed to copy "%s" to "%s" because source file could not be opened for reading.', $originFile, $targetFile), 0, null, $originFile);
}
if (false === $target = @fopen($targetFile, 'w', null, stream_context_create(array('ftp' => array('overwrite' => true))))) {
throw new IOException(sprintf('Failed to copy "%s" to "%s" because target file could not be opened for writing.', $originFile, $targetFile), 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) {
@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, $originFile);
}
}
}
}
public function mkdir($dirs, $mode = 0777)
{
foreach ($this->toIterable($dirs) as $dir) {
if (is_dir($dir)) {
continue;
}
if (!self::box('mkdir', $dir, $mode, true)) {
if (!is_dir($dir)) {
if (self::$lastError) {
throw new IOException(sprintf('Failed to create "%s": %s.', $dir, self::$lastError), 0, null, $dir);
}
throw new IOException(sprintf('Failed to create "%s"', $dir), 0, null, $dir);
}
}
}
}
public function exists($files)
{
$maxPathLength = PHP_MAXPATHLEN - 2;
foreach ($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;
}
public function touch($files, $time = null, $atime = null)
{
foreach ($this->toIterable($files) as $file) {
$touch = $time ? @touch($file, $time, $atime) : @touch($file);
if (true !== $touch) {
throw new IOException(sprintf('Failed to touch "%s".', $file), 0, null, $file);
}
}
}
public function remove($files)
{
if ($files instanceof \Traversable) {
$files = iterator_to_array($files, false);
} elseif (!\is_array($files)) {
$files = array($files);
}
$files = array_reverse($files);
foreach ($files as $file) {
if (is_link($file)) {
if (!(self::box('unlink', $file) || '\\' !== \DIRECTORY_SEPARATOR || self::box('rmdir', $file)) && file_exists($file)) {
throw new IOException(sprintf('Failed to remove symlink "%s": %s.', $file, self::$lastError));
}
} elseif (is_dir($file)) {
$this->remove(new \FilesystemIterator($file, \FilesystemIterator::CURRENT_AS_PATHNAME | \FilesystemIterator::SKIP_DOTS));
if (!self::box('rmdir', $file) && file_exists($file)) {
throw new IOException(sprintf('Failed to remove directory "%s": %s.', $file, self::$lastError));
}
} elseif (!self::box('unlink', $file) && file_exists($file)) {
throw new IOException(sprintf('Failed to remove file "%s": %s.', $file, self::$lastError));
}
}
}
public function chmod($files, $mode, $umask = 0000, $recursive = false)
{
foreach ($this->toIterable($files) as $file) {
if (true !== @chmod($file, $mode & ~$umask)) {
throw new IOException(sprintf('Failed to chmod file "%s".', $file), 0, null, $file);
}
if ($recursive && is_dir($file) && !is_link($file)) {
$this->chmod(new \FilesystemIterator($file), $mode, $umask, true);
}
}
}
public function chown($files, $user, $recursive = false)
{
foreach ($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 (true !== @lchown($file, $user)) {
throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file);
}
} else {
if (true !== @chown($file, $user)) {
throw new IOException(sprintf('Failed to chown file "%s".', $file), 0, null, $file);
}
}
}
}
public function chgrp($files, $group, $recursive = false)
{
foreach ($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 (true !== @lchgrp($file, $group)) {
throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file);
}
} else {
if (true !== @chgrp($file, $group)) {
throw new IOException(sprintf('Failed to chgrp file "%s".', $file), 0, null, $file);
}
}
}
}
public function rename($origin, $target, $overwrite = false)
{
if (!$overwrite && $this->isReadable($target)) {
throw new IOException(sprintf('Cannot rename because the target "%s" already exists.', $target), 0, null, $target);
}
if (true !== @rename($origin, $target)) {
if (is_dir($origin)) {
$this->mirror($origin, $target, null, array('override' => $overwrite, 'delete' => $overwrite));
$this->remove($origin);
return;
}
throw new IOException(sprintf('Cannot rename "%s" to "%s".', $origin, $target), 0, null, $target);
}
}
private function isReadable($filename)
{
$maxPathLength = PHP_MAXPATHLEN - 2;
if (\strlen($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);
}
public function symlink($originDir, $targetDir, $copyOnWindows = false)
{
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, $targetDir, 'symbolic');
}
}
public function hardlink($originFile, $targetFiles)
{
if (!$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, $targetFile, 'hard');
}
}
}
private function linkException($origin, $target, $linkType)
{
if (self::$lastError) {
if ('\\' === \DIRECTORY_SEPARATOR && false !== strpos(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), 0, null, $target);
}
public function readlink($path, $canonicalize = false)
{
if (!$canonicalize && !is_link($path)) {
return;
}
if ($canonicalize) {
if (!$this->exists($path)) {
return;
}
if ('\\' === \DIRECTORY_SEPARATOR) {
$path = readlink($path);
}
return realpath($path);
}
if ('\\' === \DIRECTORY_SEPARATOR) {
return realpath($path);
}
return readlink($path);
}
public function makePathRelative($endPath, $startPath)
{
if (!$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));
}
if ('\\' === \DIRECTORY_SEPARATOR) {
$endPath = str_replace('\\', '/', $endPath);
$startPath = str_replace('\\', '/', $startPath);
}
$stripDriveLetter = function ($path) {
if (\strlen($path) > 2 && ':' === $path[1] && '/' === $path[2] && ctype_alpha($path[0])) {
return substr($path, 2);
}
return $path;
};
$endPath = $stripDriveLetter($endPath);
$startPath = $stripDriveLetter($startPath);
$startPathArr = explode('/', trim($startPath, '/'));
$endPathArr = explode('/', trim($endPath, '/'));
$normalizePathArray = function ($pathSegments) {
$result = array();
foreach ($pathSegments as $segment) {
if ('..' === $segment) {
array_pop($result);
} elseif ('.' !== $segment) {
$result[] = $segment;
}
}
return $result;
};
$startPathArr = $normalizePathArray($startPathArr);
$endPathArr = $normalizePathArray($endPathArr);
$index = 0;
while (isset($startPathArr[$index]) && isset($endPathArr[$index]) && $startPathArr[$index] === $endPathArr[$index]) {
++$index;
}
if (1 === \count($startPathArr) && '' === $startPathArr[0]) {
$depth = 0;
} else {
$depth = \count($startPathArr) - $index;
}
$traverser = str_repeat('../', $depth);
$endPathRemainder = implode('/', \array_slice($endPathArr, $index));
$relativePath = $traverser.('' !== $endPathRemainder ? $endPathRemainder.'/' : '');
return '' === $relativePath ? './' : $relativePath;
}
public function mirror($originDir, $targetDir, \Traversable $iterator = null, $options = array())
{
$targetDir = rtrim($targetDir, '/\\');
$originDir = rtrim($originDir, '/\\');
$originDirLen = \strlen($originDir);
if ($this->exists($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, $flags), \RecursiveIteratorIterator::SELF_FIRST);
}
if ($this->exists($originDir)) {
$this->mkdir($targetDir);
}
foreach ($iterator as $file) {
$target = $targetDir.substr($file->getPathname(), $originDirLen);
if ($copyOnWindows) {
if (is_file($file)) {
$this->copy($file, $target, isset($options['override']) ? $options['override'] : false);
} elseif (is_dir($file)) {
$this->mkdir($target);
} else {
throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file);
}
} else {
if (is_link($file)) {
$this->symlink($file->getLinkTarget(), $target);
} elseif (is_dir($file)) {
$this->mkdir($target);
} elseif (is_file($file)) {
$this->copy($file, $target, isset($options['override']) ? $options['override'] : false);
} else {
throw new IOException(sprintf('Unable to guess "%s" file type.', $file), 0, null, $file);
}
}
}
}
public function isAbsolutePath($file)
{
return strspn($file, '/\\', 0, 1)
|| (\strlen($file) > 3 && ctype_alpha($file[0])
&& ':' === $file[1]
&& strspn($file, '/\\', 2, 1)
)
|| null !== parse_url($file, PHP_URL_SCHEME)
;
}
public function tempnam($dir, $prefix)
{
list($scheme, $hierarchy) = $this->getSchemeAndHierarchy($dir);
if (null === $scheme || 'file' === $scheme || 'gs' === $scheme) {
$tmpFile = @tempnam($hierarchy, $prefix);
if (false !== $tmpFile) {
if (null !== $scheme && 'gs' !== $scheme) {
return $scheme.'://'.$tmpFile;
}
return $tmpFile;
}
throw new IOException('A temporary file could not be created.');
}
for ($i = 0; $i < 10; ++$i) {
$tmpFile = $dir.'/'.$prefix.uniqid(mt_rand(), true);
$handle = @fopen($tmpFile, 'x+');
if (false === $handle) {
continue;
}
@fclose($handle);
return $tmpFile;
}
throw new IOException('A temporary file could not be created.');
}
public function dumpFile($filename, $content)
{
$dir = \dirname($filename);
if (!is_dir($dir)) {
$this->mkdir($dir);
}
if (!is_writable($dir)) {
throw new IOException(sprintf('Unable to write to the "%s" directory.', $dir), 0, null, $dir);
}
$tmpFile = $this->tempnam($dir, basename($filename));
if (false === @file_put_contents($tmpFile, $content)) {
throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename);
}
@chmod($tmpFile, file_exists($filename) ? fileperms($filename) : 0666 & ~umask());
$this->rename($tmpFile, $filename, true);
}
public function appendToFile($filename, $content)
{
$dir = \dirname($filename);
if (!is_dir($dir)) {
$this->mkdir($dir);
}
if (!is_writable($dir)) {
throw new IOException(sprintf('Unable to write to the "%s" directory.', $dir), 0, null, $dir);
}
if (false === @file_put_contents($filename, $content, FILE_APPEND)) {
throw new IOException(sprintf('Failed to write file "%s".', $filename), 0, null, $filename);
}
}
private function toIterable($files): iterable
{
return \is_array($files) || $files instanceof \Traversable ? $files : array($files);
}
private function getSchemeAndHierarchy(string $filename): array
{
$components = explode('://', $filename, 2);
return 2 === \count($components) ? array($components[0], $components[1]) : array(null, $components[0]);
}
private static function box($func)
{
self::$lastError = null;
\set_error_handler(__CLASS__.'::handleError');
try {
$result = \call_user_func_array($func, \array_slice(\func_get_args(), 1));
\restore_error_handler();
return $result;
} catch (\Throwable $e) {
} catch (\Exception $e) {
}
\restore_error_handler();
throw $e;
}
public static function handleError($type, $msg)
{
self::$lastError = $msg;
}
}