588 lines
15 KiB
PHP
588 lines
15 KiB
PHP
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<?php
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/**
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* Convenience class for reading, writing and appending to files.
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Utility
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* @since CakePHP(tm) v 0.2.9
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('Folder', 'Utility');
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/**
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* Convenience class for reading, writing and appending to files.
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*
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* @package Cake.Utility
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*/
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class File {
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/**
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* Folder object of the file
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*
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* @var Folder
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$Folder
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*/
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public $Folder = null;
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/**
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* File name
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*
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* @var string
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* http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$name
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*/
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public $name = null;
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/**
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* File info
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*
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* @var array
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* http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$info
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*/
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public $info = array();
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/**
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* Holds the file handler resource if the file is opened
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*
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* @var resource
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* http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$handle
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*/
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public $handle = null;
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/**
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* Enable locking for file reading and writing
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*
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* @var boolean
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* http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$lock
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*/
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public $lock = null;
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/**
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* Path property
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*
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* Current file's absolute path
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*
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* @var mixed null
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* http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$path
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*/
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public $path = null;
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/**
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* Constructor
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*
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* @param string $path Path to file
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* @param boolean $create Create file if it does not exist (if true)
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* @param integer $mode Mode to apply to the folder holding the file
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File
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*/
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public function __construct($path, $create = false, $mode = 0755) {
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$this->Folder = new Folder(dirname($path), $create, $mode);
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if (!is_dir($path)) {
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$this->name = basename($path);
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}
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$this->pwd();
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$create && !$this->exists() && $this->safe($path) && $this->create();
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}
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/**
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* Closes the current file if it is opened
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*/
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public function __destruct() {
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$this->close();
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}
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/**
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* Creates the file.
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*
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* @return boolean Success
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::create
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*/
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public function create() {
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$dir = $this->Folder->pwd();
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if (is_dir($dir) && is_writable($dir) && !$this->exists()) {
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if (touch($this->path)) {
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return true;
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}
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}
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return false;
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}
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/**
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* Opens the current file with a given $mode
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*
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* @param string $mode A valid 'fopen' mode string (r|w|a ...)
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* @param boolean $force If true then the file will be re-opened even if its already opened, otherwise it won't
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* @return boolean True on success, false on failure
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::open
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*/
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public function open($mode = 'r', $force = false) {
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if (!$force && is_resource($this->handle)) {
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return true;
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}
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if ($this->exists() === false) {
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if ($this->create() === false) {
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return false;
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}
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}
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$this->handle = fopen($this->path, $mode);
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if (is_resource($this->handle)) {
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return true;
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}
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return false;
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}
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/**
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* Return the contents of this file as a string.
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*
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* @param string $bytes where to start
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* @param string $mode A `fread` compatible mode.
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* @param boolean $force If true then the file will be re-opened even if its already opened, otherwise it won't
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* @return mixed string on success, false on failure
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::read
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*/
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public function read($bytes = false, $mode = 'rb', $force = false) {
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if ($bytes === false && $this->lock === null) {
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return file_get_contents($this->path);
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}
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if ($this->open($mode, $force) === false) {
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return false;
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}
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if ($this->lock !== null && flock($this->handle, LOCK_SH) === false) {
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return false;
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}
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if (is_int($bytes)) {
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return fread($this->handle, $bytes);
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}
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$data = '';
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while (!feof($this->handle)) {
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$data .= fgets($this->handle, 4096);
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}
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if ($this->lock !== null) {
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flock($this->handle, LOCK_UN);
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}
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if ($bytes === false) {
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$this->close();
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}
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return trim($data);
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}
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/**
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* Sets or gets the offset for the currently opened file.
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*
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* @param integer|boolean $offset The $offset in bytes to seek. If set to false then the current offset is returned.
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* @param integer $seek PHP Constant SEEK_SET | SEEK_CUR | SEEK_END determining what the $offset is relative to
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* @return mixed True on success, false on failure (set mode), false on failure or integer offset on success (get mode)
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::offset
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*/
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public function offset($offset = false, $seek = SEEK_SET) {
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if ($offset === false) {
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if (is_resource($this->handle)) {
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return ftell($this->handle);
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}
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} elseif ($this->open() === true) {
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return fseek($this->handle, $offset, $seek) === 0;
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}
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return false;
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}
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/**
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* Prepares a ASCII string for writing. Converts line endings to the
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* correct terminator for the current platform. If Windows, "\r\n" will be used,
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* all other platforms will use "\n"
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*
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* @param string $data Data to prepare for writing.
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* @param boolean $forceWindows
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* @return string The with converted line endings.
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::prepare
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*/
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public static function prepare($data, $forceWindows = false) {
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$lineBreak = "\n";
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if (DIRECTORY_SEPARATOR === '\\' || $forceWindows === true) {
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$lineBreak = "\r\n";
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}
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return strtr($data, array("\r\n" => $lineBreak, "\n" => $lineBreak, "\r" => $lineBreak));
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}
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/**
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* Write given data to this file.
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*
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* @param string $data Data to write to this File.
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* @param string $mode Mode of writing. {@link http://php.net/fwrite See fwrite()}.
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* @param string $force Force the file to open
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* @return boolean Success
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::write
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*/
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public function write($data, $mode = 'w', $force = false) {
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$success = false;
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if ($this->open($mode, $force) === true) {
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if ($this->lock !== null) {
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if (flock($this->handle, LOCK_EX) === false) {
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return false;
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}
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}
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if (fwrite($this->handle, $data) !== false) {
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$success = true;
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}
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if ($this->lock !== null) {
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flock($this->handle, LOCK_UN);
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}
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}
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return $success;
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}
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/**
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* Append given data string to this file.
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*
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* @param string $data Data to write
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* @param string $force Force the file to open
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* @return boolean Success
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::append
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*/
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public function append($data, $force = false) {
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return $this->write($data, 'a', $force);
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}
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/**
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* Closes the current file if it is opened.
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*
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* @return boolean True if closing was successful or file was already closed, otherwise false
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::close
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*/
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public function close() {
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if (!is_resource($this->handle)) {
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return true;
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}
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return fclose($this->handle);
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}
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/**
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* Deletes the file.
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*
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* @return boolean Success
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::delete
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*/
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public function delete() {
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if (is_resource($this->handle)) {
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fclose($this->handle);
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$this->handle = null;
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}
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if ($this->exists()) {
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return unlink($this->path);
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}
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return false;
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}
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/**
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* Returns the file info as an array with the following keys:
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*
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* - dirname
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* - basename
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* - extension
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* - filename
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* - filesize
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* - mime
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*
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* @return array File information.
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::info
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*/
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public function info() {
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if (!$this->info) {
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$this->info = pathinfo($this->path);
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}
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if (!isset($this->info['filename'])) {
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$this->info['filename'] = $this->name();
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}
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if (!isset($this->info['filesize'])) {
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$this->info['filesize'] = $this->size();
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}
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if (!isset($this->info['mime'])) {
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$this->info['mime'] = $this->mime();
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}
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return $this->info;
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}
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/**
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* Returns the file extension.
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*
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* @return string The file extension
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::ext
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*/
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public function ext() {
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if (!$this->info) {
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$this->info();
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}
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if (isset($this->info['extension'])) {
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return $this->info['extension'];
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}
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return false;
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}
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/**
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* Returns the file name without extension.
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*
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* @return string The file name without extension.
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::name
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*/
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public function name() {
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if (!$this->info) {
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$this->info();
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}
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if (isset($this->info['extension'])) {
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return basename($this->name, '.' . $this->info['extension']);
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} elseif ($this->name) {
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return $this->name;
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}
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return false;
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}
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/**
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* Makes file name safe for saving
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*
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* @param string $name The name of the file to make safe if different from $this->name
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* @param string $ext The name of the extension to make safe if different from $this->ext
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* @return string $ext The extension of the file
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::safe
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*/
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public function safe($name = null, $ext = null) {
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if (!$name) {
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$name = $this->name;
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}
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if (!$ext) {
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$ext = $this->ext();
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}
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return preg_replace("/(?:[^\w\.-]+)/", "_", basename($name, $ext));
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}
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/**
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* Get md5 Checksum of file with previous check of Filesize
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*
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* @param integer|boolean $maxsize in MB or true to force
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* @return string|false md5 Checksum {@link http://php.net/md5_file See md5_file()}, or false in case of an error
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* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::md5
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*/
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public function md5($maxsize = 5) {
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if ($maxsize === true) {
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|
|
return md5_file($this->path);
|
||
|
|
}
|
||
|
|
|
||
|
|
$size = $this->size();
|
||
|
|
if ($size && $size < ($maxsize * 1024) * 1024) {
|
||
|
|
return md5_file($this->path);
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the full path of the file.
|
||
|
|
*
|
||
|
|
* @return string Full path to the file
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::pwd
|
||
|
|
*/
|
||
|
|
public function pwd() {
|
||
|
|
if ($this->path === null) {
|
||
|
|
$this->path = $this->Folder->slashTerm($this->Folder->pwd()) . $this->name;
|
||
|
|
}
|
||
|
|
return $this->path;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if the file exists.
|
||
|
|
*
|
||
|
|
* @return boolean True if it exists, false otherwise
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::exists
|
||
|
|
*/
|
||
|
|
public function exists() {
|
||
|
|
$this->clearStatCache();
|
||
|
|
return (file_exists($this->path) && is_file($this->path));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the "chmod" (permissions) of the file.
|
||
|
|
*
|
||
|
|
* @return string|false Permissions for the file, or false in case of an error
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::perms
|
||
|
|
*/
|
||
|
|
public function perms() {
|
||
|
|
if ($this->exists()) {
|
||
|
|
return substr(sprintf('%o', fileperms($this->path)), -4);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the file size
|
||
|
|
*
|
||
|
|
* @return integer|false Size of the file in bytes, or false in case of an error
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::size
|
||
|
|
*/
|
||
|
|
public function size() {
|
||
|
|
if ($this->exists()) {
|
||
|
|
return filesize($this->path);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if the file is writable.
|
||
|
|
*
|
||
|
|
* @return boolean True if it's writable, false otherwise
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::writable
|
||
|
|
*/
|
||
|
|
public function writable() {
|
||
|
|
return is_writable($this->path);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if the File is executable.
|
||
|
|
*
|
||
|
|
* @return boolean True if it's executable, false otherwise
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::executable
|
||
|
|
*/
|
||
|
|
public function executable() {
|
||
|
|
return is_executable($this->path);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if the file is readable.
|
||
|
|
*
|
||
|
|
* @return boolean True if file is readable, false otherwise
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::readable
|
||
|
|
*/
|
||
|
|
public function readable() {
|
||
|
|
return is_readable($this->path);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the file's owner.
|
||
|
|
*
|
||
|
|
* @return integer|false The file owner, or false in case of an error
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::owner
|
||
|
|
*/
|
||
|
|
public function owner() {
|
||
|
|
if ($this->exists()) {
|
||
|
|
return fileowner($this->path);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the file's group.
|
||
|
|
*
|
||
|
|
* @return integer|false The file group, or false in case of an error
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::group
|
||
|
|
*/
|
||
|
|
public function group() {
|
||
|
|
if ($this->exists()) {
|
||
|
|
return filegroup($this->path);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns last access time.
|
||
|
|
*
|
||
|
|
* @return integer|false Timestamp of last access time, or false in case of an error
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::lastAccess
|
||
|
|
*/
|
||
|
|
public function lastAccess() {
|
||
|
|
if ($this->exists()) {
|
||
|
|
return fileatime($this->path);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns last modified time.
|
||
|
|
*
|
||
|
|
* @return integer|false Timestamp of last modification, or false in case of an error
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::lastChange
|
||
|
|
*/
|
||
|
|
public function lastChange() {
|
||
|
|
if ($this->exists()) {
|
||
|
|
return filemtime($this->path);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the current folder.
|
||
|
|
*
|
||
|
|
* @return Folder Current folder
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::Folder
|
||
|
|
*/
|
||
|
|
public function folder() {
|
||
|
|
return $this->Folder;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Copy the File to $dest
|
||
|
|
*
|
||
|
|
* @param string $dest Destination for the copy
|
||
|
|
* @param boolean $overwrite Overwrite $dest if exists
|
||
|
|
* @return boolean Success
|
||
|
|
* @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::copy
|
||
|
|
*/
|
||
|
|
public function copy($dest, $overwrite = true) {
|
||
|
|
if (!$this->exists() || is_file($dest) && !$overwrite) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return copy($this->path, $dest);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the mime type of the file. Uses the finfo extension if
|
||
|
|
* its available, otherwise falls back to mime_content_type
|
||
|
|
*
|
||
|
|
* @return false|string The mimetype of the file, or false if reading fails.
|
||
|
|
*/
|
||
|
|
public function mime() {
|
||
|
|
if (!$this->exists()) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (function_exists('finfo_open')) {
|
||
|
|
$finfo = finfo_open(FILEINFO_MIME);
|
||
|
|
$finfo = finfo_file($finfo, $this->pwd());
|
||
|
|
if (!$finfo) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
list($type, $charset) = explode(';', $finfo);
|
||
|
|
return $type;
|
||
|
|
}
|
||
|
|
if (function_exists('mime_content_type')) {
|
||
|
|
return mime_content_type($this->pwd());
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Clear PHP's internal stat cache
|
||
|
|
*
|
||
|
|
* For 5.3 onwards it's possible to clear cache for just a single file. Passing true
|
||
|
|
* will clear all the stat cache.
|
||
|
|
*
|
||
|
|
* @param boolean $all Clear all cache or not
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
public function clearStatCache($all = false) {
|
||
|
|
if ($all === false && version_compare(PHP_VERSION, '5.3.0') >= 0) {
|
||
|
|
return clearstatcache(true, $this->path);
|
||
|
|
}
|
||
|
|
|
||
|
|
return clearstatcache();
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|