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<?php
/**
* Part of the Joomla Framework Filesystem Package
*
* @copyright Copyright (C) 2005 - 2016 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Filesystem;
use Joomla\Filesystem\Exception\FilesystemException;
/**
* A File handling class
*
* @since 1.0
*/
class File
{
/**
* Strips the last extension off of a file name
*
* @param string $file The file name
*
* @return string The file name without the extension
*
* @since 1.0
*/
public static function stripExt($file)
{
return preg_replace('#\.[^.]*$#', '', $file);
}
/**
* Makes the file name safe to use
*
* @param string $file The name of the file [not full path]
* @param array $stripChars Array of regex (by default will remove any leading periods)
*
* @return string The sanitised string
*
* @since 1.0
*/
public static function makeSafe($file, array $stripChars = array('#^\.#'))
{
$regex = array_merge(array('#(\.){2,}#', '#[^A-Za-z0-9\.\_\- ]#'), $stripChars);
$file = preg_replace($regex, '', $file);
// Remove any trailing dots, as those aren't ever valid file names.
$file = rtrim($file, '.');
return $file;
}
/**
* Copies a file
*
* @param string $src The path to the source file
* @param string $dest The path to the destination file
* @param string $path An optional base path to prefix to the file names
* @param boolean $use_streams True to use streams
*
* @return boolean True on success
*
* @since 1.0
* @throws FilesystemException
* @throws \UnexpectedValueException
*/
public static function copy($src, $dest, $path = null, $use_streams = false)
{
// Prepend a base path if it exists
if ($path)
{
$src = Path::clean($path . '/' . $src);
$dest = Path::clean($path . '/' . $dest);
}
// Check src path
if (!is_readable($src))
{
throw new \UnexpectedValueException(__METHOD__ . ': Cannot find or read file: ' . $src);
}
if ($use_streams)
{
Stream::getStream()->copy($src, $dest);
return true;
}
if (!@ copy($src, $dest))
{
throw new FilesystemException(__METHOD__ . ': Copy failed.');
}
return true;
}
/**
* Delete a file or array of files
*
* @param mixed $file The file name or an array of file names
*
* @return boolean True on success
*
* @since 1.0
* @throws FilesystemException
*/
public static function delete($file)
{
$files = (array) $file;
foreach ($files as $file)
{
$file = Path::clean($file);
// Try making the file writable first. If it's read-only, it can't be deleted
// on Windows, even if the parent folder is writable
@chmod($file, 0777);
// In case of restricted permissions we zap it one way or the other
// as long as the owner is either the webserver or the ftp
if (!@ unlink($file))
{
$filename = basename($file);
throw new FilesystemException(__METHOD__ . ': Failed deleting ' . $filename);
}
}
return true;
}
/**
* Moves a file
*
* @param string $src The path to the source file
* @param string $dest The path to the destination file
* @param string $path An optional base path to prefix to the file names
* @param boolean $use_streams True to use streams
*
* @return boolean True on success
*
* @since 1.0
* @throws FilesystemException
*/
public static function move($src, $dest, $path = '', $use_streams = false)
{
if ($path)
{
$src = Path::clean($path . '/' . $src);
$dest = Path::clean($path . '/' . $dest);
}
// Check src path
if (!is_readable($src))
{
return 'Cannot find source file.';
}
if ($use_streams)
{
Stream::getStream()->move($src, $dest);
return true;
}
if (!@ rename($src, $dest))
{
throw new FilesystemException(__METHOD__ . ': Rename failed.');
}
return true;
}
/**
* Write contents to a file
*
* @param string $file The full file path
* @param string &$buffer The buffer to write
* @param boolean $use_streams Use streams
*
* @return boolean True on success
*
* @since 1.0
*/
public static function write($file, &$buffer, $use_streams = false)
{
@set_time_limit(ini_get('max_execution_time'));
// If the destination directory doesn't exist we need to create it
if (!file_exists(dirname($file)))
{
Folder::create(dirname($file));
}
if ($use_streams)
{
$stream = Stream::getStream();
// Beef up the chunk size to a meg
$stream->set('chunksize', (1024 * 1024));
$stream->writeFile($file, $buffer);
return true;
}
$file = Path::clean($file);
return is_int(file_put_contents($file, $buffer));
}
/**
* Moves an uploaded file to a destination folder
*
* @param string $src The name of the php (temporary) uploaded file
* @param string $dest The path (including filename) to move the uploaded file to
* @param boolean $use_streams True to use streams
*
* @return boolean True on success
*
* @since 1.0
* @throws FilesystemException
*/
public static function upload($src, $dest, $use_streams = false)
{
// Ensure that the path is valid and clean
$dest = Path::clean($dest);
// Create the destination directory if it does not exist
$baseDir = dirname($dest);
if (!file_exists($baseDir))
{
Folder::create($baseDir);
}
if ($use_streams)
{
Stream::getStream()->upload($src, $dest);
return true;
}
if (is_writeable($baseDir) && move_uploaded_file($src, $dest))
{
// Short circuit to prevent file permission errors
if (Path::setPermissions($dest))
{
return true;
}
throw new FilesystemException(__METHOD__ . ': Failed to change file permissions.');
}
throw new FilesystemException(__METHOD__ . ': Failed to move file.');
}
}
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