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Config.php
485 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Zend Framework |
| 4 | * |
| 5 | * LICENSE |
| 6 | * |
| 7 | * This source file is subject to the new BSD license that is bundled |
| 8 | * with this package in the file LICENSE.txt. |
| 9 | * It is also available through the world-wide-web at this URL: |
| 10 | * http://framework.zend.com/license/new-bsd |
| 11 | * If you did not receive a copy of the license and are unable to |
| 12 | * obtain it through the world-wide-web, please send an email |
| 13 | * to license@zend.com so we can send you a copy immediately. |
| 14 | * |
| 15 | * @category Zend |
| 16 | * @package Zend_Config |
| 17 | * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com) |
| 18 | * @license http://framework.zend.com/license/new-bsd New BSD License |
| 19 | * @version $Id: Config.php 23775 2011-03-01 17:25:24Z ralph $ |
| 20 | */ |
| 21 | |
| 22 | |
| 23 | /** |
| 24 | * @category Zend |
| 25 | * @package Zend_Config |
| 26 | * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com) |
| 27 | * @license http://framework.zend.com/license/new-bsd New BSD License |
| 28 | */ |
| 29 | class Zend_Config implements Countable, Iterator |
| 30 | { |
| 31 | /** |
| 32 | * Whether in-memory modifications to configuration data are allowed |
| 33 | * |
| 34 | * @var boolean |
| 35 | */ |
| 36 | protected $_allowModifications; |
| 37 | |
| 38 | /** |
| 39 | * Iteration index |
| 40 | * |
| 41 | * @var integer |
| 42 | */ |
| 43 | protected $_index; |
| 44 | |
| 45 | /** |
| 46 | * Number of elements in configuration data |
| 47 | * |
| 48 | * @var integer |
| 49 | */ |
| 50 | protected $_count; |
| 51 | |
| 52 | /** |
| 53 | * Contains array of configuration data |
| 54 | * |
| 55 | * @var array |
| 56 | */ |
| 57 | protected $_data; |
| 58 | |
| 59 | /** |
| 60 | * Used when unsetting values during iteration to ensure we do not skip |
| 61 | * the next element |
| 62 | * |
| 63 | * @var boolean |
| 64 | */ |
| 65 | protected $_skipNextIteration; |
| 66 | |
| 67 | /** |
| 68 | * Contains which config file sections were loaded. This is null |
| 69 | * if all sections were loaded, a string name if one section is loaded |
| 70 | * and an array of string names if multiple sections were loaded. |
| 71 | * |
| 72 | * @var mixed |
| 73 | */ |
| 74 | protected $_loadedSection; |
| 75 | |
| 76 | /** |
| 77 | * This is used to track section inheritance. The keys are names of sections that |
| 78 | * extend other sections, and the values are the extended sections. |
| 79 | * |
| 80 | * @var array |
| 81 | */ |
| 82 | protected $_extends = array(); |
| 83 | |
| 84 | /** |
| 85 | * Load file error string. |
| 86 | * |
| 87 | * Is null if there was no error while file loading |
| 88 | * |
| 89 | * @var string |
| 90 | */ |
| 91 | protected $_loadFileErrorStr = null; |
| 92 | |
| 93 | /** |
| 94 | * Zend_Config provides a property based interface to |
| 95 | * an array. The data are read-only unless $allowModifications |
| 96 | * is set to true on construction. |
| 97 | * |
| 98 | * Zend_Config also implements Countable and Iterator to |
| 99 | * facilitate easy access to the data. |
| 100 | * |
| 101 | * @param array $array |
| 102 | * @param boolean $allowModifications |
| 103 | * @return void |
| 104 | */ |
| 105 | public function __construct(array $array, $allowModifications = false) |
| 106 | { |
| 107 | $this->_allowModifications = (boolean) $allowModifications; |
| 108 | $this->_loadedSection = null; |
| 109 | $this->_index = 0; |
| 110 | $this->_data = array(); |
| 111 | foreach ($array as $key => $value) { |
| 112 | if (is_array($value)) { |
| 113 | $this->_data[$key] = new self($value, $this->_allowModifications); |
| 114 | } else { |
| 115 | $this->_data[$key] = $value; |
| 116 | } |
| 117 | } |
| 118 | $this->_count = count($this->_data); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Retrieve a value and return $default if there is no element set. |
| 123 | * |
| 124 | * @param string $name |
| 125 | * @param mixed $default |
| 126 | * @return mixed |
| 127 | */ |
| 128 | public function get($name, $default = null) |
| 129 | { |
| 130 | $result = $default; |
| 131 | if (array_key_exists($name, $this->_data)) { |
| 132 | $result = $this->_data[$name]; |
| 133 | } |
| 134 | return $result; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Magic function so that $obj->value will work. |
| 139 | * |
| 140 | * @param string $name |
| 141 | * @return mixed |
| 142 | */ |
| 143 | public function __get($name) |
| 144 | { |
| 145 | return $this->get($name); |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Only allow setting of a property if $allowModifications |
| 150 | * was set to true on construction. Otherwise, throw an exception. |
| 151 | * |
| 152 | * @param string $name |
| 153 | * @param mixed $value |
| 154 | * @throws Zend_Config_Exception |
| 155 | * @return void |
| 156 | */ |
| 157 | public function __set($name, $value) |
| 158 | { |
| 159 | if ($this->_allowModifications) { |
| 160 | if (is_array($value)) { |
| 161 | $this->_data[$name] = new self($value, true); |
| 162 | } else { |
| 163 | $this->_data[$name] = $value; |
| 164 | } |
| 165 | $this->_count = count($this->_data); |
| 166 | } else { |
| 167 | /** @see Zend_Config_Exception */ |
| 168 | // require_once 'Zend/Config/Exception.php'; |
| 169 | throw new Zend_Config_Exception('Zend_Config is read only'); |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Deep clone of this instance to ensure that nested Zend_Configs |
| 175 | * are also cloned. |
| 176 | * |
| 177 | * @return void |
| 178 | */ |
| 179 | public function __clone() |
| 180 | { |
| 181 | $array = array(); |
| 182 | foreach ($this->_data as $key => $value) { |
| 183 | if ($value instanceof Zend_Config) { |
| 184 | $array[$key] = clone $value; |
| 185 | } else { |
| 186 | $array[$key] = $value; |
| 187 | } |
| 188 | } |
| 189 | $this->_data = $array; |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * Return an associative array of the stored data. |
| 194 | * |
| 195 | * @return array |
| 196 | */ |
| 197 | public function toArray() |
| 198 | { |
| 199 | $array = array(); |
| 200 | $data = $this->_data; |
| 201 | foreach ($data as $key => $value) { |
| 202 | if ($value instanceof Zend_Config) { |
| 203 | $array[$key] = $value->toArray(); |
| 204 | } else { |
| 205 | $array[$key] = $value; |
| 206 | } |
| 207 | } |
| 208 | return $array; |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Support isset() overloading on PHP 5.1 |
| 213 | * |
| 214 | * @param string $name |
| 215 | * @return boolean |
| 216 | */ |
| 217 | public function __isset($name) |
| 218 | { |
| 219 | return isset($this->_data[$name]); |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * Support unset() overloading on PHP 5.1 |
| 224 | * |
| 225 | * @param string $name |
| 226 | * @throws Zend_Config_Exception |
| 227 | * @return void |
| 228 | */ |
| 229 | public function __unset($name) |
| 230 | { |
| 231 | if ($this->_allowModifications) { |
| 232 | unset($this->_data[$name]); |
| 233 | $this->_count = count($this->_data); |
| 234 | $this->_skipNextIteration = true; |
| 235 | } else { |
| 236 | /** @see Zend_Config_Exception */ |
| 237 | // require_once 'Zend/Config/Exception.php'; |
| 238 | throw new Zend_Config_Exception('Zend_Config is read only'); |
| 239 | } |
| 240 | |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Defined by Countable interface |
| 245 | * |
| 246 | * @return int |
| 247 | */ |
| 248 | public function count() |
| 249 | { |
| 250 | return $this->_count; |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Defined by Iterator interface |
| 255 | * |
| 256 | * @return mixed |
| 257 | */ |
| 258 | public function current() |
| 259 | { |
| 260 | $this->_skipNextIteration = false; |
| 261 | return current($this->_data); |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * Defined by Iterator interface |
| 266 | * |
| 267 | * @return mixed |
| 268 | */ |
| 269 | public function key() |
| 270 | { |
| 271 | return key($this->_data); |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Defined by Iterator interface |
| 276 | * |
| 277 | */ |
| 278 | public function next() |
| 279 | { |
| 280 | if ($this->_skipNextIteration) { |
| 281 | $this->_skipNextIteration = false; |
| 282 | return; |
| 283 | } |
| 284 | next($this->_data); |
| 285 | $this->_index++; |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Defined by Iterator interface |
| 290 | * |
| 291 | */ |
| 292 | public function rewind() |
| 293 | { |
| 294 | $this->_skipNextIteration = false; |
| 295 | reset($this->_data); |
| 296 | $this->_index = 0; |
| 297 | } |
| 298 | |
| 299 | /** |
| 300 | * Defined by Iterator interface |
| 301 | * |
| 302 | * @return boolean |
| 303 | */ |
| 304 | public function valid() |
| 305 | { |
| 306 | return $this->_index < $this->_count; |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * Returns the section name(s) loaded. |
| 311 | * |
| 312 | * @return mixed |
| 313 | */ |
| 314 | public function getSectionName() |
| 315 | { |
| 316 | if(is_array($this->_loadedSection) && count($this->_loadedSection) == 1) { |
| 317 | $this->_loadedSection = $this->_loadedSection[0]; |
| 318 | } |
| 319 | return $this->_loadedSection; |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * Returns true if all sections were loaded |
| 324 | * |
| 325 | * @return boolean |
| 326 | */ |
| 327 | public function areAllSectionsLoaded() |
| 328 | { |
| 329 | return $this->_loadedSection === null; |
| 330 | } |
| 331 | |
| 332 | |
| 333 | /** |
| 334 | * Merge another Zend_Config with this one. The items |
| 335 | * in $merge will override the same named items in |
| 336 | * the current config. |
| 337 | * |
| 338 | * @param Zend_Config $merge |
| 339 | * @return Zend_Config |
| 340 | */ |
| 341 | public function merge(Zend_Config $merge) |
| 342 | { |
| 343 | foreach($merge as $key => $item) { |
| 344 | if(array_key_exists($key, $this->_data)) { |
| 345 | if($item instanceof Zend_Config && $this->$key instanceof Zend_Config) { |
| 346 | $this->$key = $this->$key->merge(new Zend_Config($item->toArray(), !$this->readOnly())); |
| 347 | } else { |
| 348 | $this->$key = $item; |
| 349 | } |
| 350 | } else { |
| 351 | if($item instanceof Zend_Config) { |
| 352 | $this->$key = new Zend_Config($item->toArray(), !$this->readOnly()); |
| 353 | } else { |
| 354 | $this->$key = $item; |
| 355 | } |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | return $this; |
| 360 | } |
| 361 | |
| 362 | /** |
| 363 | * Prevent any more modifications being made to this instance. Useful |
| 364 | * after merge() has been used to merge multiple Zend_Config objects |
| 365 | * into one object which should then not be modified again. |
| 366 | * |
| 367 | */ |
| 368 | public function setReadOnly() |
| 369 | { |
| 370 | $this->_allowModifications = false; |
| 371 | foreach ($this->_data as $key => $value) { |
| 372 | if ($value instanceof Zend_Config) { |
| 373 | $value->setReadOnly(); |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * Returns if this Zend_Config object is read only or not. |
| 380 | * |
| 381 | * @return boolean |
| 382 | */ |
| 383 | public function readOnly() |
| 384 | { |
| 385 | return !$this->_allowModifications; |
| 386 | } |
| 387 | |
| 388 | /** |
| 389 | * Get the current extends |
| 390 | * |
| 391 | * @return array |
| 392 | */ |
| 393 | public function getExtends() |
| 394 | { |
| 395 | return $this->_extends; |
| 396 | } |
| 397 | |
| 398 | /** |
| 399 | * Set an extend for Zend_Config_Writer |
| 400 | * |
| 401 | * @param string $extendingSection |
| 402 | * @param string $extendedSection |
| 403 | * @return void |
| 404 | */ |
| 405 | public function setExtend($extendingSection, $extendedSection = null) |
| 406 | { |
| 407 | if ($extendedSection === null && isset($this->_extends[$extendingSection])) { |
| 408 | unset($this->_extends[$extendingSection]); |
| 409 | } else if ($extendedSection !== null) { |
| 410 | $this->_extends[$extendingSection] = $extendedSection; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | /** |
| 415 | * Throws an exception if $extendingSection may not extend $extendedSection, |
| 416 | * and tracks the section extension if it is valid. |
| 417 | * |
| 418 | * @param string $extendingSection |
| 419 | * @param string $extendedSection |
| 420 | * @throws Zend_Config_Exception |
| 421 | * @return void |
| 422 | */ |
| 423 | protected function _assertValidExtend($extendingSection, $extendedSection) |
| 424 | { |
| 425 | // detect circular section inheritance |
| 426 | $extendedSectionCurrent = $extendedSection; |
| 427 | while (array_key_exists($extendedSectionCurrent, $this->_extends)) { |
| 428 | if ($this->_extends[$extendedSectionCurrent] == $extendingSection) { |
| 429 | /** @see Zend_Config_Exception */ |
| 430 | // require_once 'Zend/Config/Exception.php'; |
| 431 | throw new Zend_Config_Exception('Illegal circular inheritance detected'); |
| 432 | } |
| 433 | $extendedSectionCurrent = $this->_extends[$extendedSectionCurrent]; |
| 434 | } |
| 435 | // remember that this section extends another section |
| 436 | $this->_extends[$extendingSection] = $extendedSection; |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * Handle any errors from simplexml_load_file or parse_ini_file |
| 441 | * |
| 442 | * @param integer $errno |
| 443 | * @param string $errstr |
| 444 | * @param string $errfile |
| 445 | * @param integer $errline |
| 446 | */ |
| 447 | protected function _loadFileErrorHandler($errno, $errstr, $errfile, $errline) |
| 448 | { |
| 449 | if ($this->_loadFileErrorStr === null) { |
| 450 | $this->_loadFileErrorStr = $errstr; |
| 451 | } else { |
| 452 | $this->_loadFileErrorStr .= (PHP_EOL . $errstr); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * Merge two arrays recursively, overwriting keys of the same name |
| 458 | * in $firstArray with the value in $secondArray. |
| 459 | * |
| 460 | * @param mixed $firstArray First array |
| 461 | * @param mixed $secondArray Second array to merge into first array |
| 462 | * @return array |
| 463 | */ |
| 464 | protected function _arrayMergeRecursive($firstArray, $secondArray) |
| 465 | { |
| 466 | if (is_array($firstArray) && is_array($secondArray)) { |
| 467 | foreach ($secondArray as $key => $value) { |
| 468 | if (isset($firstArray[$key])) { |
| 469 | $firstArray[$key] = $this->_arrayMergeRecursive($firstArray[$key], $value); |
| 470 | } else { |
| 471 | if($key === 0) { |
| 472 | $firstArray= array(0=>$this->_arrayMergeRecursive($firstArray, $value)); |
| 473 | } else { |
| 474 | $firstArray[$key] = $value; |
| 475 | } |
| 476 | } |
| 477 | } |
| 478 | } else { |
| 479 | $firstArray = $secondArray; |
| 480 | } |
| 481 | |
| 482 | return $firstArray; |
| 483 | } |
| 484 | } |
| 485 |