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<?php
/**
* Convenience class for handling directories.
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2009, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2009, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs
* @since CakePHP(tm) v 0.2.9
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/

/**
* Included libraries.
*
*/
if (!class_exists('Object')) {
require LIBS . 'object.php';
}

/**
* Folder structure browser, lists folders and files.
*
* Long description for class
*
* @package cake
* @subpackage cake.cake.libs
*/
class Folder extends Object {

/**
* Path to Folder.
*
* @var string
* @access public
*/
var $path = null;

/**
* Sortedness.
*
* @var boolean
* @access public
*/
var $sort = false;

/**
* mode to be used on create.
*
* @var boolean
* @access public
*/
var $mode = 0755;

/**
* holds messages from last method.
*
* @var array
* @access private
*/
var $__messages = array();

/**
* holds errors from last method.
*
* @var array
* @access private
*/
var $__errors = false;

/**
* holds array of complete directory paths.
*
* @var array
* @access private
*/
var $__directories;

/**
* holds array of complete file paths.
*
* @var array
* @access private
*/
var $__files;

/**
* Constructor.
*
* @param string $path Path to folder
* @param boolean $create Create folder if not found
* @param mixed $mode Mode (CHMOD) to apply to created folder, false to ignore
*/
function __construct($path = false, $create = false, $mode = false) {
parent::__construct();
if (empty($path)) {
$path = TMP;
}
if ($mode) {
$this->mode = $mode;
}

if (!file_exists($path) && $create === true) {
$this->create($path, $this->mode);
}
if (!Folder::isAbsolute($path)) {
$path = realpath($path);
}
if (!empty($path)) {
$this->cd($path);
}
}

/**
* Return current path.
*
* @return string Current path
* @access public
*/
function pwd() {
return $this->path;
}

/**
* Change directory to $path.
*
* @param string $path Path to the directory to change to
* @return string The new path. Returns false on failure
* @access public
*/
function cd($path) {
$path = $this->realpath($path);
if (is_dir($path)) {
return $this->path = $path;
}
return false;
}

/**
* Returns an array of the contents of the current directory.
* The returned array holds two arrays: One of directories and one of files.
*
* @param boolean $sort
* @param mixed $exceptions Either an array or boolean true will not grab dot files
* @param boolean $fullPath True returns the full path
* @return mixed Contents of current directory as an array, an empty array on failure
* @access public
*/
function read($sort = true, $exceptions = false, $fullPath = false) {
$dirs = $files = array();

if (!$this->pwd()) {
return array($dirs, $files);
}
if (is_array($exceptions)) {
$exceptions = array_flip($exceptions);
}
$skipHidden = isset($exceptions['.']) || $exceptions === true;

if (false === ($dir = @opendir($this->path))) {
return array($dirs, $files);
}

while (false !== ($item = readdir($dir))) {
if ($item === '.' || $item === '..' || ($skipHidden && $item[0] === '.') || isset($exceptions[$item])) {
continue;
}

$path = Folder::addPathElement($this->path, $item);
if (is_dir($path)) {
$dirs[] = $fullPath ? $path : $item;
} else {
$files[] = $fullPath ? $path : $item;
}
}

if ($sort || $this->sort) {
sort($dirs);
sort($files);
}

closedir($dir);
return array($dirs, $files);
}

/**
* Returns an array of all matching files in current directory.
*
* @param string $pattern Preg_match pattern (Defaults to: .*)
* @return array Files that match given pattern
* @access public
*/
function find($regexpPattern = '.*', $sort = false) {
list($dirs, $files) = $this->read($sort);
return array_values(preg_grep('/^' . $regexpPattern . '$/i', $files)); ;
}

/**
* Returns an array of all matching files in and below current directory.
*
* @param string $pattern Preg_match pattern (Defaults to: .*)
* @return array Files matching $pattern
* @access public
*/
function findRecursive($pattern = '.*', $sort = false) {
if (!$this->pwd()) {
return array();
}
$startsOn = $this->path;
$out = $this->_findRecursive($pattern, $sort);
$this->cd($startsOn);
return $out;
}

/**
* Private helper function for findRecursive.
*
* @param string $pattern Pattern to match against
* @return array Files matching pattern
* @access private
*/
function _findRecursive($pattern, $sort = false) {
list($dirs, $files) = $this->read($sort);
$found = array();

foreach ($files as $file) {
if (preg_match('/^' . $pattern . '$/i', $file)) {
$found[] = Folder::addPathElement($this->path, $file);
}
}
$start = $this->path;

foreach ($dirs as $dir) {
$this->cd(Folder::addPathElement($start, $dir));
$found = array_merge($found, $this->findRecursive($pattern, $sort));
}
return $found;
}

/**
* Returns true if given $path is a Windows path.
*
* @param string $path Path to check
* @return boolean true if windows path, false otherwise
* @access public
* @static
*/
function isWindowsPath($path) {
if (preg_match('/^[A-Z]:\\\\/i', $path)) {
return true;
}
return false;
}

/**
* Returns true if given $path is an absolute path.
*
* @param string $path Path to check
* @return bool
* @access public
* @static
*/
function isAbsolute($path) {
$match = preg_match('/^\\//', $path) || preg_match('/^[A-Z]:\\\\/i', $path);
return $match;
}

/**
* Returns a correct set of slashes for given $path. (\\ for Windows paths and / for other paths.)
*
* @param string $path Path to check
* @return string Set of slashes ("\\" or "/")
* @access public
* @static
*/
function normalizePath($path) {
return Folder::correctSlashFor($path);
}

/**
* Returns a correct set of slashes for given $path. (\\ for Windows paths and / for other paths.)
*
* @param string $path Path to check
* @return string Set of slashes ("\\" or "/")
* @access public
* @static
*/
function correctSlashFor($path) {
if (Folder::isWindowsPath($path)) {
return '\\';
}
return '/';
}

/**
* Returns $path with added terminating slash (corrected for Windows or other OS).
*
* @param string $path Path to check
* @return string Path with ending slash
* @access public
* @static
*/
function slashTerm($path) {
if (Folder::isSlashTerm($path)) {
return $path;
}
return $path . Folder::correctSlashFor($path);
}

/**
* Returns $path with $element added, with correct slash in-between.
*
* @param string $path Path
* @param string $element Element to and at end of path
* @return string Combined path
* @access public
* @static
*/
function addPathElement($path, $element) {
return rtrim($path, DS) . DS . $element;
}

/**
* Returns true if the File is in a given CakePath.
*
* @return bool
* @access public
*/
function inCakePath($path = '') {
$dir = substr(Folder::slashTerm(ROOT), 0, -1);
$newdir = $dir . $path;

return $this->inPath($newdir);
}

/**
* Returns true if the File is in given path.
*
* @return bool
* @access public
*/
function inPath($path = '', $reverse = false) {
$dir = Folder::slashTerm($path);
$current = Folder::slashTerm($this->pwd());

if (!$reverse) {
$return = preg_match('/^(.*)' . preg_quote($dir, '/') . '(.*)/', $current);
} else {
$return = preg_match('/^(.*)' . preg_quote($current, '/') . '(.*)/', $dir);
}
if ($return == 1) {
return true;
} else {
return false;
}
}

/**
* Change the mode on a directory structure recursively. This includes changing the mode on files as well.
*
* @param string $path The path to chmod
* @param integer $mode octal value 0755
* @param boolean $recursive chmod recursively
* @param array $exceptions array of files, directories to skip
* @return boolean Returns TRUE on success, FALSE on failure
* @access public
*/
function chmod($path, $mode = false, $recursive = true, $exceptions = array()) {
if (!$mode) {
$mode = $this->mode;
}

if ($recursive === false && is_dir($path)) {
if (@chmod($path, intval($mode, 8))) {
$this->__messages[] = sprintf(__('%s changed to %s', true), $path, $mode);
return true;
}

$this->__errors[] = sprintf(__('%s NOT changed to %s', true), $path, $mode);
return false;
}

if (is_dir($path)) {
$paths = $this->tree($path);

foreach ($paths as $type) {
foreach ($type as $key => $fullpath) {
$check = explode(DS, $fullpath);
$count = count($check);

if (in_array($check[$count - 1], $exceptions)) {
continue;
}

if (@chmod($fullpath, intval($mode, 8))) {
$this->__messages[] = sprintf(__('%s changed to %s', true), $fullpath, $mode);
} else {
$this->__errors[] = sprintf(__('%s NOT changed to %s', true), $fullpath, $mode);
}
}
}

if (empty($this->__errors)) {
return true;
}
}
return false;
}

/**
* Returns an array of nested directories and files in each directory
*
* @param string $path the directory path to build the tree from
* @param boolean $hidden return hidden files and directories
* @param string $type either file or dir. null returns both files and directories
* @return mixed array of nested directories and files in each directory
* @access public
*/
function tree($path, $exceptions = true, $type = null) {
$original = $this->path;
$path = rtrim($path, DS);
$this->__files = array();
$this->__directories = array($path);
$directories = array();

if ($exceptions === false) {
$exceptions = true;
}
while (count($this->__directories)) {
$dir = array_pop($this->__directories);
$this->__tree($dir, $exceptions);
$directories[] = $dir;
}

if ($type === null) {
return array($directories, $this->__files);
}
if ($type === 'dir') {
return $directories;
}
$this->cd($original);

return $this->__files;
}

/**
* Private method to list directories and files in each directory
*
* @param string $path
* @param = boolean $hidden
* @access private
*/
function __tree($path, $exceptions) {
if ($this->cd($path)) {
list($dirs, $files) = $this->read(false, $exceptions, true);
$this->__directories = array_merge($this->__directories, $dirs);
$this->__files = array_merge($this->__files, $files);
}
}

/**
* Create a directory structure recursively.
*
* @param string $pathname The directory structure to create
* @param integer $mode octal value 0755
* @return boolean Returns TRUE on success, FALSE on failure
* @access public
*/
function create($pathname, $mode = false) {
if (is_dir($pathname) || empty($pathname)) {
return true;
}

if (!$mode) {
$mode = $this->mode;
}

if (is_file($pathname)) {
$this->__errors[] = sprintf(__('%s is a file', true), $pathname);
return false;
}
$nextPathname = substr($pathname, 0, strrpos($pathname, DS));

if ($this->create($nextPathname, $mode)) {
if (!file_exists($pathname)) {
$old = umask(0);
if (mkdir($pathname, $mode)) {
umask($old);
$this->__messages[] = sprintf(__('%s created', true), $pathname);
return true;
} else {
umask($old);
$this->__errors[] = sprintf(__('%s NOT created', true), $pathname);
return false;
}
}
}
return true;
}

/**
* Returns the size in bytes of this Folder.
*
* @param string $directory Path to directory
* @return int size in bytes of current folder
* @access public
*/
function dirsize() {
$size = 0;
$directory = Folder::slashTerm($this->path);
$stack = array($directory);
$count = count($stack);
for ($i = 0, $j = $count; $i < $j; ++$i) {
if (is_file($stack[$i])) {
$size += filesize($stack[$i]);
} elseif (is_dir($stack[$i])) {
$dir = dir($stack[$i]);
if ($dir) {
while (false !== ($entry = $dir->read())) {
if ($entry === '.' || $entry === '..') {
continue;
}
$add = $stack[$i] . $entry;

if (is_dir($stack[$i] . $entry)) {
$add = Folder::slashTerm($add);
}
$stack[] = $add;
}
$dir->close();
}
}
$j = count($stack);
}
return $size;
}

/**
* Recursively Remove directories if system allow.
*
* @param string $path Path of directory to delete
* @return boolean Success
* @access public
*/
function delete($path = null) {
if (!$path) {
$path = $this->pwd();
}
if (!$path) {
return null;
}
$path = Folder::slashTerm($path);
if (is_dir($path) === true) {
$normalFiles = glob($path . '*');
$hiddenFiles = glob($path . '\.?*');

$normalFiles = $normalFiles ? $normalFiles : array();
$hiddenFiles = $hiddenFiles ? $hiddenFiles : array();

$files = array_merge($normalFiles, $hiddenFiles);
if (is_array($files)) {
foreach ($files as $file) {
if (preg_match('/(\.|\.\.)$/', $file)) {
continue;
}
if (is_file($file) === true) {
if (@unlink($file)) {
$this->__messages[] = sprintf(__('%s removed', true), $file);
} else {
$this->__errors[] = sprintf(__('%s NOT removed', true), $file);
}
} elseif (is_dir($file) === true && $this->delete($file) === false) {
return false;
}
}
}
$path = substr($path, 0, strlen($path) - 1);
if (rmdir($path) === false) {
$this->__errors[] = sprintf(__('%s NOT removed', true), $path);
return false;
} else {
$this->__messages[] = sprintf(__('%s removed', true), $path);
}
}
return true;
}

/**
* Recursive directory copy.
*
* @param array $options (to, from, chmod, skip)
* @return bool
* @access public
*/
function copy($options = array()) {
if (!$this->pwd()) {
return false;
}
$to = null;
if (is_string($options)) {
$to = $options;
$options = array();
}
$options = array_merge(array('to' => $to, 'from' => $this->path, 'mode' => $this->mode, 'skip' => array()), $options);

$fromDir = $options['from'];
$toDir = $options['to'];
$mode = $options['mode'];

if (!$this->cd($fromDir)) {
$this->__errors[] = sprintf(__('%s not found', true), $fromDir);
return false;
}

if (!is_dir($toDir)) {
$this->create($toDir, $mode);
}

if (!is_writable($toDir)) {
$this->__errors[] = sprintf(__('%s not writable', true), $toDir);
return false;
}

$exceptions = array_merge(array('.', '..', '.svn'), $options['skip']);
if ($handle = @opendir($fromDir)) {
while (false !== ($item = readdir($handle))) {
if (!in_array($item, $exceptions)) {
$from = Folder::addPathElement($fromDir, $item);
$to = Folder::addPathElement($toDir, $item);
if (is_file($from)) {
if (copy($from, $to)) {
chmod($to, intval($mode, 8));
touch($to, filemtime($from));
$this->__messages[] = sprintf(__('%s copied to %s', true), $from, $to);
} else {
$this->__errors[] = sprintf(__('%s NOT copied to %s', true), $from, $to);
}
}

if (is_dir($from) && !file_exists($to)) {
$old = umask(0);
if (mkdir($to, $mode)) {
umask($old);
$old = umask(0);
chmod($to, $mode);
umask($old);
$this->__messages[] = sprintf(__('%s created', true), $to);
$options = array_merge($options, array('to'=> $to, 'from'=> $from));
$this->copy($options);
} else {
$this->__errors[] = sprintf(__('%s not created', true), $to);
}
}
}
}
closedir($handle);
} else {
return false;
}

if (!empty($this->__errors)) {
return false;
}
return true;
}

/**
* Recursive directory move.
*
* @param array $options (to, from, chmod, skip)
* @return boolean Success
* @access public
*/
function move($options) {
$to = null;
if (is_string($options)) {
$to = $options;
$options = (array)$options;
}
$options = array_merge(array('to' => $to, 'from' => $this->path, 'mode' => $this->mode, 'skip' => array()), $options);

if ($this->copy($options)) {
if ($this->delete($options['from'])) {
return $this->cd($options['to']);
}
}
return false;
}

/**
* get messages from latest method
*
* @return array
* @access public
*/
function messages() {
return $this->__messages;
}

/**
* get error from latest method
*
* @return array
* @access public
*/
function errors() {
return $this->__errors;
}

/**
* nix flavored alias
*
* @see read
* @deprecated use read
* @access public
*/
function ls($sort = true, $exceptions = false) {
trigger_error(__('Deprecated method, use Folder::read instead', true), E_USER_WARNING);
return $this->read($sort, $exceptions);
}

/**
* nix flavored alias
*
* @see create
* @deprecated use create
* @access public
*/
function mkdir($pathname, $mode = 0755) {
trigger_error(__('Deprecated method, use Folder::create instead', true), E_USER_WARNING);
return $this->create($pathname, $mode);
}

/**
* nix flavored alias
*
* @see copy
* @deprecated use copy
* @access public
*/
function cp($options) {
trigger_error(__('Deprecated method, use Folder::copy instead', true), E_USER_WARNING);
return $this->copy($options);
}

/**
* nix flavored alias
*
* @see move
* @deprecated use move
* @access public
*/
function mv($options) {
trigger_error(__('Deprecated method, use Folder::move instead', true), E_USER_WARNING);
return $this->move($options);
}

/**
* nix flavored alias
*
* @see delete
* @deprecated use delete
* @access public
*/
function rm($path) {
trigger_error(__('Deprecated method, use Folder::delete instead', true), E_USER_WARNING);
return $this->delete($path);
}

/**
* Get the real path (taking ".." and such into account)
*
* @param string $path Path to resolve
* @return string The resolved path
*/
function realpath($path) {
$path = str_replace('/', DS, trim($path));
if (strpos($path, '..') === false) {
if (!Folder::isAbsolute($path)) {
$path = Folder::addPathElement($this->path, $path);
}
return $path;
}
$parts = explode(DS, $path);
$newparts = array();
$newpath = '';
if ($path[0] === DS) {
$newpath = DS;
}

while (($part = array_shift($parts)) !== NULL) {
if ($part === '.' || $part === '') {
continue;
}
if ($part === '..') {
if (!empty($newparts)) {
array_pop($newparts);
continue;
} else {
return false;
}
}
$newparts[] = $part;
}
$newpath .= implode(DS, $newparts);

return Folder::slashTerm($newpath);
}

/**
* Returns true if given $path ends in a slash (i.e. is slash-terminated).
*
* @param string $path Path to check
* @return boolean true if path ends with slash, false otherwise
* @access public
* @static
*/
function isSlashTerm($path) {
$lastChar = $path[strlen($path) - 1];
return $lastChar === '/' || $lastChar === '\\';
}
}
?>
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