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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,254 @@ | ||
| <?php | ||
| /** | ||
| * Zend Framework | ||
| * | ||
| * LICENSE | ||
| * | ||
| * This source file is subject to the new BSD license that is bundled | ||
| * with this package in the file LICENSE.txt. | ||
| * It is also available through the world-wide-web at this URL: | ||
| * http://framework.zend.com/license/new-bsd | ||
| * If you did not receive a copy of the license and are unable to | ||
| * obtain it through the world-wide-web, please send an email | ||
| * to license@zend.com so we can send you a copy immediately. | ||
| * | ||
| * @category Zend | ||
| * @package Zend_Config | ||
| * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com) | ||
| * @license http://framework.zend.com/license/new-bsd New BSD License | ||
| */ | ||
|
|
||
| namespace Zend\Config; | ||
|
|
||
| use Zend\Json\Json as JsonUtil; | ||
|
|
||
| /** | ||
| * JSON Adapter for Zend_Config | ||
| * | ||
| * @category Zend | ||
| * @package Zend_Config | ||
| * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com) | ||
| * @license http://framework.zend.com/license/new-bsd New BSD License | ||
| */ | ||
| class Json extends Config | ||
| { | ||
| /** | ||
| * Name of object key indicating section current section extends | ||
| */ | ||
| const EXTENDS_NAME = "_extends"; | ||
|
|
||
| /** | ||
| * Whether or not to ignore constants in the JSON string | ||
| * | ||
| * Note: if you do not have constant names in quotations in your JSON | ||
| * string, they may lead to syntax errors when parsing. | ||
| * | ||
| * @var bool | ||
| */ | ||
| protected $_ignoreConstants = false; | ||
|
|
||
| /** | ||
| * Whether to skip extends or not | ||
| * | ||
| * @var boolean | ||
| */ | ||
| protected $_skipExtends = false; | ||
|
|
||
| /** | ||
| * Loads the section $section from the config file encoded as JSON | ||
| * | ||
| * Sections are defined as properties of the main object | ||
| * | ||
| * In order to extend another section, a section defines the "_extends" | ||
| * property having a value of the section name from which the extending | ||
| * section inherits values. | ||
| * | ||
| * Note that the keys in $section will override any keys of the same | ||
| * name in the sections that have been included via "_extends". | ||
| * | ||
| * @param string $json JSON file or string to process | ||
| * @param mixed $section Section to process | ||
| * @param boolean $options Whether modifiacations are allowed at runtime | ||
| * @throws Exception\InvalidArgumentException When JSON text is not set or cannot be loaded | ||
| * @throws Exception\RuntimeException When section $sectionName cannot be found in $json | ||
| */ | ||
| public function __construct($json, $section = null, $options = false) | ||
| { | ||
| if (empty($json)) { | ||
| throw new Exception\InvalidArgumentException('Filename is not set'); | ||
| } | ||
|
|
||
| $allowModifications = false; | ||
| if (is_bool($options)) { | ||
| $allowModifications = $options; | ||
| } elseif (is_array($options)) { | ||
| foreach ($options as $key => $value) { | ||
| switch (strtolower($key)) { | ||
| case 'allow_modifications': | ||
| case 'allowmodifications': | ||
| $allowModifications = (bool) $value; | ||
| break; | ||
| case 'skip_extends': | ||
| case 'skipextends': | ||
| $this->_skipExtends = (bool) $value; | ||
| break; | ||
| case 'ignore_constants': | ||
| case 'ignoreconstants': | ||
| $this->_ignoreConstants = (bool) $value; | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| set_error_handler(array($this, '_loadFileErrorHandler')); // Warnings and errors are suppressed | ||
| if ($json[0] != '{') { | ||
| $json = file_get_contents($json); | ||
| } | ||
| restore_error_handler(); | ||
|
|
||
| // Check if there was a error while loading file | ||
| if ($this->_loadFileErrorStr !== null) { | ||
| throw new Exception\RuntimeException($this->_loadFileErrorStr); | ||
| } | ||
|
|
||
| // Replace constants | ||
| if (!$this->_ignoreConstants) { | ||
| $json = $this->_replaceConstants($json); | ||
| } | ||
|
|
||
| // Parse/decode | ||
| $config = JsonUtil::decode($json); | ||
|
|
||
| if (null === $config) { | ||
| // decode failed | ||
| throw new Exception\RuntimeException("Error parsing JSON data"); | ||
| } | ||
|
|
||
| // Flatten object structure into array | ||
| $config = $this->flattenObjects($config); | ||
|
|
||
| if ($section === null) { | ||
| $dataArray = array(); | ||
| foreach ($config as $sectionName => $sectionData) { | ||
| $dataArray[$sectionName] = $this->_processExtends($config, $sectionName); | ||
| } | ||
|
|
||
| parent::__construct($dataArray, $allowModifications); | ||
| } elseif (is_array($section)) { | ||
| $dataArray = array(); | ||
| foreach ($section as $sectionName) { | ||
| if (!isset($config[$sectionName])) { | ||
| throw new Exception\RuntimeException(sprintf('Section "%s" cannot be found', $sectionName)); | ||
| } | ||
|
|
||
| $dataArray = array_merge($this->_processExtends($config, $sectionName), $dataArray); | ||
| } | ||
|
|
||
| parent::__construct($dataArray, $allowModifications); | ||
| } else { | ||
| if (!isset($config[$section])) { | ||
| throw new Exception\RuntimeException(sprintf('Section "%s" cannot be found', $section)); | ||
| } | ||
|
|
||
| $dataArray = $this->_processExtends($config, $section); | ||
| if (!is_array($dataArray)) { | ||
| // Section in the JSON data contains just one top level string | ||
| $dataArray = array($section => $dataArray); | ||
| } | ||
|
|
||
| parent::__construct($dataArray, $allowModifications); | ||
| } | ||
|
|
||
| $this->_loadedSection = $section; | ||
| } | ||
|
|
||
| /** | ||
| * Helper function to process each element in the section and handle | ||
| * the "_extends" inheritance attribute. | ||
| * | ||
| * @param array $data Data array to process | ||
| * @param string $section Section to process | ||
| * @param array $config Configuration which was parsed yet | ||
| * @throws Exception\RuntimeException When $section cannot be found | ||
| * @return array | ||
| */ | ||
| protected function _processExtends(array $data, $section, array $config = array()) | ||
| { | ||
| if (!isset($data[$section])) { | ||
| throw new Exception\RuntimeException(sprintf('Section "%s" cannot be found', $section)); | ||
| } | ||
|
|
||
| $thisSection = $data[$section]; | ||
|
|
||
| if (is_array($thisSection) && isset($thisSection[self::EXTENDS_NAME])) { | ||
| if (is_array($thisSection[self::EXTENDS_NAME])) { | ||
| throw new Exception\RuntimeException('Invalid extends clause: must be a string; array received'); | ||
| } | ||
| $this->_assertValidExtend($section, $thisSection[self::EXTENDS_NAME]); | ||
|
|
||
| if (!$this->_skipExtends) { | ||
| $config = $this->_processExtends($data, $thisSection[self::EXTENDS_NAME], $config); | ||
| } | ||
| unset($thisSection[self::EXTENDS_NAME]); | ||
| } | ||
|
|
||
| $config = $this->_arrayMergeRecursive($config, $thisSection); | ||
|
|
||
| return $config; | ||
| } | ||
|
|
||
| /** | ||
| * Replace any constants referenced in a string with their values | ||
| * | ||
| * @param string $value | ||
| * @return string | ||
| */ | ||
| protected function _replaceConstants($value) | ||
| { | ||
| foreach ($this->_getConstants() as $constant) { | ||
| if (strstr($value, $constant)) { | ||
| $value = str_replace($constant, constant($constant), $value); | ||
| } | ||
| } | ||
| return $value; | ||
| } | ||
|
|
||
| /** | ||
| * Get (reverse) sorted list of defined constant names | ||
| * | ||
| * @return array | ||
| */ | ||
| protected function _getConstants() | ||
| { | ||
| $constants = array_keys(get_defined_constants()); | ||
| rsort($constants, SORT_STRING); | ||
| return $constants; | ||
| } | ||
|
|
||
| /** | ||
| * Flatten JSON object structure to associative array | ||
| * | ||
| * @param object|array $config | ||
| * @return array | ||
| */ | ||
| protected function flattenObjects($config) | ||
| { | ||
| $flattened = array(); | ||
| foreach ($config as $key => $value) { | ||
| if (is_object($value)) { | ||
| $value = $this->flattenObjects($value); | ||
| } | ||
| if (is_array($value)) { | ||
| foreach ($value as $k => $v) { | ||
| if (is_object($v)) { | ||
| $value[$k] = $this->flattenObjects($v); | ||
| } | ||
| } | ||
| } | ||
| $flattened[$key] = $value; | ||
| } | ||
| return $flattened; | ||
| } | ||
| } |
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