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 1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (http://nette.org)
 5:  *
 6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
 7:  *
 8:  * For the full copyright and license information, please view
 9:  * the file license.txt that was distributed with this source code.
10:  * @package Nette\Utils
11:  */
12: 
13: 
14: 
15: /**
16:  * JSON encoder and decoder.
17:  *
18:  * @author     David Grudl
19:  * @package Nette\Utils
20:  */
21: final class NJson
22: {
23:     const FORCE_ARRAY = 1;
24: 
25:     /** @var array */
26:     private static $messages = array(
27:         JSON_ERROR_DEPTH => 'The maximum stack depth has been exceeded',
28:         JSON_ERROR_STATE_MISMATCH => 'Syntax error, malformed JSON',
29:         JSON_ERROR_CTRL_CHAR => 'Unexpected control character found',
30:         JSON_ERROR_SYNTAX => 'Syntax error, malformed JSON',
31:     );
32: 
33: 
34: 
35:     /**
36:      * Static class - cannot be instantiated.
37:      */
38:     final public function __construct()
39:     {
40:         throw new NStaticClassException;
41:     }
42: 
43: 
44: 
45:     /**
46:      * Returns the JSON representation of a value.
47:      * @param  mixed
48:      * @return string
49:      */
50:     public static function encode($value)
51:     {
52:         if (function_exists('ini_set')) { // workaround for PHP bugs #52397, #54109, #63004
53:             $old = ini_set('display_errors', 0); // needed to receive 'Invalid UTF-8 sequence' error
54:         }
55:         set_error_handler(create_function('$severity, $message', ' // needed to receive \'recursion detected\' error
56:             restore_error_handler();
57:             throw new NJsonException($message);
58:         '));
59:         $json = json_encode($value);
60:         restore_error_handler();
61:         if (isset($old)) {
62:             ini_set('display_errors', $old);
63:         }
64:         return $json;
65:     }
66: 
67: 
68: 
69:     /**
70:      * Decodes a JSON string.
71:      * @param  string
72:      * @param  int
73:      * @return mixed
74:      */
75:     public static function decode($json, $options = 0)
76:     {
77:         $json = (string) $json;
78:         $value = json_decode($json, (bool) ($options & self::FORCE_ARRAY));
79:         if ($value === NULL && $json !== '' && strcasecmp($json, 'null')) { // '' do not clean json_last_error
80:             $error = PHP_VERSION_ID >= 50300 ? json_last_error() : 0;
81:             throw new NJsonException(isset(self::$messages[$error]) ? self::$messages[$error] : 'Unknown error', $error);
82:         }
83:         return $value;
84:     }
85: 
86: }
87: 
88: 
89: 
90: /**
91:  * The exception that indicates error of JSON encoding/decoding.
92:  * @package Nette\Utils
93:  */
94: class NJsonException extends Exception
95: {
96: }
97: 
Nette Framework 2.0.10 (for PHP 5.2, prefixed) API API documentation generated by ApiGen 2.8.0