pictcode / lib / Cake / Utility / File.php @ 635eef61
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1 | 635eef61 | spyder1211 | <?php
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2 | /**
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3 | * Convenience class for reading, writing and appending to files.
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4 | *
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5 | * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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6 | * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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7 | *
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8 | * Licensed under The MIT License
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9 | * For full copyright and license information, please see the LICENSE.txt
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10 | * Redistributions of files must retain the above copyright notice.
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11 | *
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12 | * @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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13 | * @link http://cakephp.org CakePHP(tm) Project
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14 | * @package Cake.Utility
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15 | * @since CakePHP(tm) v 0.2.9
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16 | * @license http://www.opensource.org/licenses/mit-license.php MIT License
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17 | */
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18 | |||
19 | App::uses('Folder', 'Utility'); |
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20 | |||
21 | /**
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22 | * Convenience class for reading, writing and appending to files.
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23 | *
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24 | * @package Cake.Utility
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25 | */
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26 | class File { |
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27 | |||
28 | /**
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29 | * Folder object of the file
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30 | *
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31 | * @var Folder
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32 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$Folder
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33 | */
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34 | public $Folder = null; |
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35 | |||
36 | /**
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37 | * File name
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38 | *
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39 | * @var string
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40 | * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$name
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41 | */
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42 | public $name = null; |
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43 | |||
44 | /**
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45 | * File info
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46 | *
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47 | * @var array
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48 | * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$info
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49 | */
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50 | public $info = array(); |
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51 | |||
52 | /**
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53 | * Holds the file handler resource if the file is opened
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54 | *
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55 | * @var resource
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56 | * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$handle
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57 | */
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58 | public $handle = null; |
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59 | |||
60 | /**
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61 | * Enable locking for file reading and writing
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62 | *
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63 | * @var bool
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64 | * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$lock
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65 | */
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66 | public $lock = null; |
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67 | |||
68 | /**
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69 | * Path property
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70 | *
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71 | * Current file's absolute path
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72 | *
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73 | * @var mixed
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74 | * http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::$path
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75 | */
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76 | public $path = null; |
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77 | |||
78 | /**
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79 | * Constructor
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80 | *
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81 | * @param string $path Path to file
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82 | * @param bool $create Create file if it does not exist (if true)
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83 | * @param int $mode Mode to apply to the folder holding the file
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84 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File
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85 | */
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86 | public function __construct($path, $create = false, $mode = 0755) { |
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87 | $this->Folder = new Folder(dirname($path), $create, $mode); |
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88 | if (!is_dir($path)) { |
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89 | $this->name = basename($path); |
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90 | } |
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91 | $this->pwd();
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92 | $create && !$this->exists() && $this->safe($path) && $this->create(); |
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93 | } |
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94 | |||
95 | /**
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96 | * Closes the current file if it is opened
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97 | */
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98 | public function __destruct() { |
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99 | $this->close();
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100 | } |
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101 | |||
102 | /**
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103 | * Creates the file.
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104 | *
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105 | * @return bool Success
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106 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::create
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107 | */
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108 | public function create() { |
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109 | $dir = $this->Folder->pwd(); |
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110 | if (is_dir($dir) && is_writable($dir) && !$this->exists()) { |
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111 | if (touch($this->path)) { |
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112 | return true; |
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113 | } |
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114 | } |
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115 | return false; |
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116 | } |
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117 | |||
118 | /**
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119 | * Opens the current file with a given $mode
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120 | *
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121 | * @param string $mode A valid 'fopen' mode string (r|w|a ...)
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122 | * @param bool $force If true then the file will be re-opened even if its already opened, otherwise it won't
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123 | * @return bool True on success, false on failure
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124 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::open
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125 | */
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126 | public function open($mode = 'r', $force = false) { |
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127 | if (!$force && is_resource($this->handle)) { |
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128 | return true; |
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129 | } |
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130 | if ($this->exists() === false) { |
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131 | if ($this->create() === false) { |
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132 | return false; |
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133 | } |
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134 | } |
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135 | |||
136 | $this->handle = fopen($this->path, $mode); |
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137 | if (is_resource($this->handle)) { |
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138 | return true; |
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139 | } |
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140 | return false; |
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141 | } |
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142 | |||
143 | /**
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144 | * Return the contents of this file as a string.
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145 | *
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146 | * @param string $bytes where to start
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147 | * @param string $mode A `fread` compatible mode.
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148 | * @param bool $force If true then the file will be re-opened even if its already opened, otherwise it won't
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149 | * @return mixed string on success, false on failure
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150 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::read
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151 | */
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152 | public function read($bytes = false, $mode = 'rb', $force = false) { |
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153 | if ($bytes === false && $this->lock === null) { |
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154 | return file_get_contents($this->path); |
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155 | } |
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156 | if ($this->open($mode, $force) === false) { |
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157 | return false; |
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158 | } |
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159 | if ($this->lock !== null && flock($this->handle, LOCK_SH) === false) { |
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160 | return false; |
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161 | } |
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162 | if (is_int($bytes)) { |
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163 | return fread($this->handle, $bytes); |
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164 | } |
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165 | |||
166 | $data = ''; |
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167 | while (!feof($this->handle)) { |
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168 | $data .= fgets($this->handle, 4096); |
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169 | } |
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170 | |||
171 | if ($this->lock !== null) { |
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172 | flock($this->handle, LOCK_UN); |
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173 | } |
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174 | if ($bytes === false) { |
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175 | $this->close();
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176 | } |
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177 | return trim($data); |
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178 | } |
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179 | |||
180 | /**
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181 | * Sets or gets the offset for the currently opened file.
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182 | *
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183 | * @param int|bool $offset The $offset in bytes to seek. If set to false then the current offset is returned.
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184 | * @param int $seek PHP Constant SEEK_SET | SEEK_CUR | SEEK_END determining what the $offset is relative to
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185 | * @return mixed True on success, false on failure (set mode), false on failure or integer offset on success (get mode)
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186 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::offset
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187 | */
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188 | public function offset($offset = false, $seek = SEEK_SET) { |
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189 | if ($offset === false) { |
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190 | if (is_resource($this->handle)) { |
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191 | return ftell($this->handle); |
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192 | } |
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193 | } elseif ($this->open() === true) { |
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194 | return fseek($this->handle, $offset, $seek) === 0; |
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195 | } |
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196 | return false; |
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197 | } |
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198 | |||
199 | /**
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200 | * Prepares an ASCII string for writing. Converts line endings to the
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201 | * correct terminator for the current platform. If Windows, "\r\n" will be used,
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202 | * all other platforms will use "\n"
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203 | *
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204 | * @param string $data Data to prepare for writing.
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205 | * @param bool $forceWindows If true forces usage Windows newline string.
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206 | * @return string The with converted line endings.
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207 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::prepare
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208 | */
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209 | public static function prepare($data, $forceWindows = false) { |
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210 | $lineBreak = "\n"; |
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211 | if (DIRECTORY_SEPARATOR === '\\' || $forceWindows === true) { |
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212 | $lineBreak = "\r\n"; |
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213 | } |
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214 | return strtr($data, array("\r\n" => $lineBreak, "\n" => $lineBreak, "\r" => $lineBreak)); |
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215 | } |
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216 | |||
217 | /**
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218 | * Write given data to this file.
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219 | *
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220 | * @param string $data Data to write to this File.
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221 | * @param string $mode Mode of writing. {@link http://php.net/fwrite See fwrite()}.
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222 | * @param string $force Force the file to open
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223 | * @return bool Success
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224 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::write
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225 | */
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226 | public function write($data, $mode = 'w', $force = false) { |
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227 | $success = false; |
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228 | if ($this->open($mode, $force) === true) { |
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229 | if ($this->lock !== null) { |
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230 | if (flock($this->handle, LOCK_EX) === false) { |
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231 | return false; |
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232 | } |
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233 | } |
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234 | |||
235 | if (fwrite($this->handle, $data) !== false) { |
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236 | $success = true; |
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237 | } |
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238 | if ($this->lock !== null) { |
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239 | flock($this->handle, LOCK_UN); |
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240 | } |
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241 | } |
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242 | return $success; |
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243 | } |
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244 | |||
245 | /**
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246 | * Append given data string to this file.
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247 | *
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248 | * @param string $data Data to write
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249 | * @param string $force Force the file to open
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250 | * @return bool Success
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251 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::append
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252 | */
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253 | public function append($data, $force = false) { |
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254 | return $this->write($data, 'a', $force); |
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255 | } |
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256 | |||
257 | /**
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258 | * Closes the current file if it is opened.
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259 | *
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260 | * @return bool True if closing was successful or file was already closed, otherwise false
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261 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::close
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262 | */
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263 | public function close() { |
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264 | if (!is_resource($this->handle)) { |
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265 | return true; |
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266 | } |
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267 | return fclose($this->handle); |
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268 | } |
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269 | |||
270 | /**
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271 | * Deletes the file.
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272 | *
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273 | * @return bool Success
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274 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::delete
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275 | */
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276 | public function delete() { |
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277 | if (is_resource($this->handle)) { |
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278 | fclose($this->handle); |
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279 | $this->handle = null; |
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280 | } |
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281 | if ($this->exists()) { |
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282 | return unlink($this->path); |
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283 | } |
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284 | return false; |
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285 | } |
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286 | |||
287 | /**
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288 | * Returns the file info as an array with the following keys:
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289 | *
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290 | * - dirname
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291 | * - basename
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292 | * - extension
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293 | * - filename
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294 | * - filesize
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295 | * - mime
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296 | *
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297 | * @return array File information.
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298 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::info
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299 | */
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300 | public function info() { |
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301 | if (!$this->info) { |
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302 | $this->info = pathinfo($this->path); |
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303 | } |
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304 | if (!isset($this->info['filename'])) { |
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305 | $this->info['filename'] = $this->name(); |
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306 | } |
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307 | if (!isset($this->info['filesize'])) { |
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308 | $this->info['filesize'] = $this->size(); |
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309 | } |
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310 | if (!isset($this->info['mime'])) { |
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311 | $this->info['mime'] = $this->mime(); |
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312 | } |
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313 | return $this->info; |
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314 | } |
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315 | |||
316 | /**
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317 | * Returns the file extension.
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318 | *
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319 | * @return string The file extension
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320 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::ext
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321 | */
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322 | public function ext() { |
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323 | if (!$this->info) { |
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324 | $this->info();
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325 | } |
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326 | if (isset($this->info['extension'])) { |
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327 | return $this->info['extension']; |
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328 | } |
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329 | return false; |
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330 | } |
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331 | |||
332 | /**
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333 | * Returns the file name without extension.
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334 | *
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335 | * @return string The file name without extension.
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336 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::name
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337 | */
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338 | public function name() { |
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339 | if (!$this->info) { |
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340 | $this->info();
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341 | } |
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342 | if (isset($this->info['extension'])) { |
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343 | return basename($this->name, '.' . $this->info['extension']); |
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344 | } elseif ($this->name) { |
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345 | return $this->name; |
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346 | } |
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347 | return false; |
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348 | } |
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349 | |||
350 | /**
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351 | * Makes file name safe for saving
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352 | *
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353 | * @param string $name The name of the file to make safe if different from $this->name
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354 | * @param string $ext The name of the extension to make safe if different from $this->ext
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355 | * @return string ext The extension of the file
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356 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::safe
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357 | */
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358 | public function safe($name = null, $ext = null) { |
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359 | if (!$name) { |
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360 | $name = $this->name; |
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361 | } |
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362 | if (!$ext) { |
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363 | $ext = $this->ext(); |
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364 | } |
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365 | return preg_replace("/(?:[^\w\.-]+)/", "_", basename($name, $ext)); |
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366 | } |
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367 | |||
368 | /**
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369 | * Get md5 Checksum of file with previous check of Filesize
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370 | *
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371 | * @param int|bool $maxsize in MB or true to force
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372 | * @return string|false md5 Checksum {@link http://php.net/md5_file See md5_file()}, or false in case of an error
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373 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::md5
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374 | */
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375 | public function md5($maxsize = 5) { |
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376 | if ($maxsize === true) { |
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377 | return md5_file($this->path); |
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378 | } |
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379 | |||
380 | $size = $this->size(); |
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381 | if ($size && $size < ($maxsize * 1024) * 1024) { |
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382 | return md5_file($this->path); |
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383 | } |
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384 | |||
385 | return false; |
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386 | } |
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387 | |||
388 | /**
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389 | * Returns the full path of the file.
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390 | *
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391 | * @return string Full path to the file
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392 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::pwd
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393 | */
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394 | public function pwd() { |
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395 | if ($this->path === null) { |
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396 | $dir = $this->Folder->pwd(); |
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397 | if (is_dir($dir)) { |
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398 | $this->path = $this->Folder->slashTerm($dir) . $this->name; |
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399 | } |
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400 | } |
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401 | return $this->path; |
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402 | } |
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403 | |||
404 | /**
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405 | * Returns true if the file exists.
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406 | *
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407 | * @return bool True if it exists, false otherwise
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408 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::exists
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409 | */
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410 | public function exists() { |
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411 | $this->clearStatCache(); |
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412 | return (file_exists($this->path) && is_file($this->path)); |
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413 | } |
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414 | |||
415 | /**
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416 | * Returns the "chmod" (permissions) of the file.
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417 | *
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418 | * @return string|false Permissions for the file, or false in case of an error
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419 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::perms
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420 | */
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421 | public function perms() { |
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422 | if ($this->exists()) { |
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423 | return substr(sprintf('%o', fileperms($this->path)), -4); |
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424 | } |
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425 | return false; |
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426 | } |
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427 | |||
428 | /**
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429 | * Returns the file size
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430 | *
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431 | * @return int|false Size of the file in bytes, or false in case of an error
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432 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::size
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433 | */
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434 | public function size() { |
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435 | if ($this->exists()) { |
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436 | return filesize($this->path); |
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437 | } |
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438 | return false; |
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439 | } |
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440 | |||
441 | /**
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442 | * Returns true if the file is writable.
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443 | *
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444 | * @return bool True if it's writable, false otherwise
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445 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::writable
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446 | */
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447 | public function writable() { |
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448 | return is_writable($this->path); |
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449 | } |
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450 | |||
451 | /**
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452 | * Returns true if the File is executable.
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453 | *
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454 | * @return bool True if it's executable, false otherwise
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455 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::executable
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456 | */
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457 | public function executable() { |
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458 | return is_executable($this->path); |
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459 | } |
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460 | |||
461 | /**
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462 | * Returns true if the file is readable.
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463 | *
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464 | * @return bool True if file is readable, false otherwise
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465 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::readable
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466 | */
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467 | public function readable() { |
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468 | return is_readable($this->path); |
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469 | } |
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470 | |||
471 | /**
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472 | * Returns the file's owner.
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473 | *
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474 | * @return int|false The file owner, or false in case of an error
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475 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::owner
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476 | */
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477 | public function owner() { |
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478 | if ($this->exists()) { |
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479 | return fileowner($this->path); |
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480 | } |
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481 | return false; |
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482 | } |
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483 | |||
484 | /**
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485 | * Returns the file's group.
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486 | *
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487 | * @return int|false The file group, or false in case of an error
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488 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::group
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489 | */
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490 | public function group() { |
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491 | if ($this->exists()) { |
||
492 | return filegroup($this->path); |
||
493 | } |
||
494 | return false; |
||
495 | } |
||
496 | |||
497 | /**
|
||
498 | * Returns last access time.
|
||
499 | *
|
||
500 | * @return int|false Timestamp of last access time, or false in case of an error
|
||
501 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::lastAccess
|
||
502 | */
|
||
503 | public function lastAccess() { |
||
504 | if ($this->exists()) { |
||
505 | return fileatime($this->path); |
||
506 | } |
||
507 | return false; |
||
508 | } |
||
509 | |||
510 | /**
|
||
511 | * Returns last modified time.
|
||
512 | *
|
||
513 | * @return int|false Timestamp of last modification, or false in case of an error
|
||
514 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::lastChange
|
||
515 | */
|
||
516 | public function lastChange() { |
||
517 | if ($this->exists()) { |
||
518 | return filemtime($this->path); |
||
519 | } |
||
520 | return false; |
||
521 | } |
||
522 | |||
523 | /**
|
||
524 | * Returns the current folder.
|
||
525 | *
|
||
526 | * @return Folder Current folder
|
||
527 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::Folder
|
||
528 | */
|
||
529 | public function folder() { |
||
530 | return $this->Folder; |
||
531 | } |
||
532 | |||
533 | /**
|
||
534 | * Copy the File to $dest
|
||
535 | *
|
||
536 | * @param string $dest Destination for the copy
|
||
537 | * @param bool $overwrite Overwrite $dest if exists
|
||
538 | * @return bool Success
|
||
539 | * @link http://book.cakephp.org/2.0/en/core-utility-libraries/file-folder.html#File::copy
|
||
540 | */
|
||
541 | public function copy($dest, $overwrite = true) { |
||
542 | if (!$this->exists() || is_file($dest) && !$overwrite) { |
||
543 | return false; |
||
544 | } |
||
545 | return copy($this->path, $dest); |
||
546 | } |
||
547 | |||
548 | /**
|
||
549 | * Get the mime type of the file. Uses the finfo extension if
|
||
550 | * its available, otherwise falls back to mime_content_type
|
||
551 | *
|
||
552 | * @return false|string The mimetype of the file, or false if reading fails.
|
||
553 | */
|
||
554 | public function mime() { |
||
555 | if (!$this->exists()) { |
||
556 | return false; |
||
557 | } |
||
558 | if (function_exists('finfo_open')) { |
||
559 | $finfo = finfo_open(FILEINFO_MIME); |
||
560 | $finfo = finfo_file($finfo, $this->pwd()); |
||
561 | if (!$finfo) { |
||
562 | return false; |
||
563 | } |
||
564 | list($type) = explode(';', $finfo); |
||
565 | return $type; |
||
566 | } |
||
567 | if (function_exists('mime_content_type')) { |
||
568 | return mime_content_type($this->pwd()); |
||
569 | } |
||
570 | return false; |
||
571 | } |
||
572 | |||
573 | /**
|
||
574 | * Clear PHP's internal stat cache
|
||
575 | *
|
||
576 | * For 5.3 onwards it's possible to clear cache for just a single file. Passing true
|
||
577 | * will clear all the stat cache.
|
||
578 | *
|
||
579 | * @param bool $all Clear all cache or not
|
||
580 | * @return void
|
||
581 | */
|
||
582 | public function clearStatCache($all = false) { |
||
583 | if ($all === false && version_compare(PHP_VERSION, '5.3.0') >= 0) { |
||
584 | return clearstatcache(true, $this->path); |
||
585 | } |
||
586 | |||
587 | return clearstatcache(); |
||
588 | } |
||
589 | |||
590 | /**
|
||
591 | * Searches for a given text and replaces the text if found.
|
||
592 | *
|
||
593 | * @param string|array $search Text(s) to search for.
|
||
594 | * @param string|array $replace Text(s) to replace with.
|
||
595 | * @return bool Success
|
||
596 | */
|
||
597 | public function replaceText($search, $replace) { |
||
598 | if (!$this->open('r+')) { |
||
599 | return false; |
||
600 | } |
||
601 | |||
602 | if ($this->lock !== null) { |
||
603 | if (flock($this->handle, LOCK_EX) === false) { |
||
604 | return false; |
||
605 | } |
||
606 | } |
||
607 | |||
608 | $replaced = $this->write(str_replace($search, $replace, $this->read()), 'w', true); |
||
609 | |||
610 | if ($this->lock !== null) { |
||
611 | flock($this->handle, LOCK_UN); |
||
612 | } |
||
613 | $this->close();
|
||
614 | |||
615 | return $replaced; |
||
616 | } |
||
617 | |||
618 | } |