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composer/src/Composer/Util/Filesystem.php

135 lines
4.4 KiB
PHP

<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Composer\Util;
/**
* @author Jordi Boggiano <j.boggiano@seld.be>
*/
class Filesystem
{
public function removeDirectory($directory)
{
if (defined('PHP_WINDOWS_VERSION_BUILD')) {
$cmd = sprintf('rmdir /S /Q %s', escapeshellarg(realpath($directory)));
} else {
$cmd = sprintf('rm -rf %s', escapeshellarg($directory));
}
return $this->getProcess()->execute($cmd) === 0;
}
public function ensureDirectoryExists($directory)
{
if (!is_dir($directory)) {
if (file_exists($directory)) {
throw new \RuntimeException(
$directory.' exists and is not a directory.'
);
}
if (!mkdir($directory, 0777, true)) {
throw new \RuntimeException(
$directory.' does not exist and could not be created.'
);
}
}
}
/**
* Returns the shortest path from $from to $to
*
* @param string $from
* @param string $to
* @return string
*/
public function findShortestPath($from, $to)
{
if (!$this->isAbsolutePath($from) || !$this->isAbsolutePath($to)) {
throw new \InvalidArgumentException('from and to must be absolute paths');
}
if (dirname($from) === dirname($to)) {
return './'.basename($to);
}
$from = lcfirst(rtrim(strtr($from, '\\', '/'), '/'));
$to = lcfirst(rtrim(strtr($to, '\\', '/'), '/'));
$commonPath = $to;
while (strpos($from, $commonPath) !== 0 && '/' !== $commonPath && !preg_match('{^[a-z]:/?$}i', $commonPath) && '.' !== $commonPath) {
$commonPath = strtr(dirname($commonPath), '\\', '/');
}
if (0 !== strpos($from, $commonPath) || '/' === $commonPath || '.' === $commonPath) {
return $to;
}
$commonPath = rtrim($commonPath, '/') . '/';
$sourcePathDepth = substr_count(substr($from, strlen($commonPath)), '/');
$commonPathCode = str_repeat('../', $sourcePathDepth);
return ($commonPathCode . substr($to, strlen($commonPath))) ?: './';
}
/**
* Returns PHP code that, when executed in $from, will return the path to $to
*
* @param string $from
* @param string $to
* @param Boolean $directories if true, the source/target are considered to be directories
* @return string
*/
public function findShortestPathCode($from, $to, $directories = false)
{
if (!$this->isAbsolutePath($from) || !$this->isAbsolutePath($to)) {
throw new \InvalidArgumentException('from and to must be absolute paths');
}
if ($from === $to) {
return $directories ? '__DIR__' : '__FILE__';
}
$from = lcfirst(strtr($from, '\\', '/'));
$to = lcfirst(strtr($to, '\\', '/'));
$commonPath = $to;
while (strpos($from, $commonPath) !== 0 && '/' !== $commonPath && !preg_match('{^[a-z]:/?$}i', $commonPath) && '.' !== $commonPath) {
$commonPath = strtr(dirname($commonPath), '\\', '/');
}
if (0 !== strpos($from, $commonPath) || '/' === $commonPath || '.' === $commonPath) {
return var_export($to, true);
}
$commonPath = rtrim($commonPath, '/') . '/';
if (strpos($to, $from.'/') === 0) {
return '__DIR__ . '.var_export(substr($to, strlen($from)), true);
}
$sourcePathDepth = substr_count(substr($from, strlen($commonPath)), '/') + $directories;
$commonPathCode = str_repeat('dirname(', $sourcePathDepth).'__DIR__'.str_repeat(')', $sourcePathDepth);
$relTarget = substr($to, strlen($commonPath));
return $commonPathCode . (strlen($relTarget) ? '.' . var_export('/' . $relTarget, true) : '');
}
/**
* Checks if the given path is absolute
*
* @param string $path
* @return Boolean
*/
public function isAbsolutePath($path)
{
return substr($path, 0, 1) === '/' || substr($path, 1, 1) === ':';
}
protected function getProcess()
{
return new ProcessExecutor;
}
}