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 1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Framework (http://nette.org)
 5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
 6:  */
 7: 
 8: namespace Nette\Utils;
 9: 
10: use Nette;
11: 
12: 
13: /**
14:  * JSON encoder and decoder.
15:  *
16:  * @author     David Grudl
17:  */
18: class Json
19: {
20:     const FORCE_ARRAY = 1;
21: 
22:     /** @var array */
23:     private static $messages = array(
24:         JSON_ERROR_DEPTH => 'The maximum stack depth has been exceeded',
25:         JSON_ERROR_STATE_MISMATCH => 'Syntax error, malformed JSON',
26:         JSON_ERROR_CTRL_CHAR => 'Unexpected control character found',
27:         JSON_ERROR_SYNTAX => 'Syntax error, malformed JSON',
28:         5 /*JSON_ERROR_UTF8*/ => 'Invalid UTF-8 sequence',
29:         6 /*PHP_JSON_ERROR_RECURSION*/ => 'Recursion detected',
30:         7 /*PHP_JSON_ERROR_INF_OR_NAN*/ => 'Inf and NaN cannot be JSON encoded',
31:         8 /*PHP_JSON_ERROR_UNSUPPORTED_TYPE*/ => 'Type is not supported',
32:     );
33: 
34: 
35:     /**
36:      * Static class - cannot be instantiated.
37:      */
38:     final public function __construct()
39:     {
40:         throw new Nette\StaticClassException;
41:     }
42: 
43: 
44:     /**
45:      * Returns the JSON representation of a value.
46:      * @param  mixed
47:      * @return string
48:      */
49:     public static function encode($value)
50:     {
51:         if (function_exists('ini_set')) { // workaround for PHP bugs #52397, #54109, #63004
52:             $old = ini_set('display_errors', 0); // needed to receive 'Invalid UTF-8 sequence' error
53:         }
54:         set_error_handler(function($severity, $message) { // needed to receive 'recursion detected' error
55:             restore_error_handler();
56:             throw new JsonException($message);
57:         });
58:         $json = json_encode($value);
59:         restore_error_handler();
60:         if (isset($old)) {
61:             ini_set('display_errors', $old);
62:         }
63:         if (PHP_VERSION_ID >= 50300 && ($error = json_last_error())) {
64:             throw new JsonException(isset(static::$messages[$error]) ? static::$messages[$error] : 'Unknown error', $error);
65:         }
66:         $json = str_replace(array("\xe2\x80\xa8", "\xe2\x80\xa9"), array('\u2028', '\u2029'), $json);
67:         return $json;
68:     }
69: 
70: 
71:     /**
72:      * Decodes a JSON string.
73:      * @param  string
74:      * @param  int
75:      * @return mixed
76:      */
77:     public static function decode($json, $options = 0)
78:     {
79:         $json = (string) $json;
80:         $value = json_decode($json, (bool) ($options & self::FORCE_ARRAY));
81:         if ($value === NULL && $json !== '' && strcasecmp($json, 'null')) { // '' do not clean json_last_error
82:             $error = PHP_VERSION_ID >= 50300 ? json_last_error() : 0;
83:             throw new JsonException(isset(static::$messages[$error]) ? static::$messages[$error] : 'Unknown error', $error);
84:         }
85:         return $value;
86:     }
87: 
88: }
89: 
90: 
91: /**
92:  * The exception that indicates error of JSON encoding/decoding.
93:  */
94: class JsonException extends \Exception
95: {
96: }
97: 
Nette Framework 2.0.14 API API documentation generated by ApiGen 2.8.0