1: <?php
 2: /*
 3:  * Copyright (c) 2015 @trashtoy
 4:  * https://github.com/trashtoy/
 5:  * 
 6:  * Permission is hereby granted, free of charge, to any person obtaining a copy of
 7:  * this software and associated documentation files (the "Software"), to deal in
 8:  * the Software without restriction, including without limitation the rights to use,
 9:  * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
10:  * Software, and to permit persons to whom the Software is furnished to do so,
11:  * subject to the following conditions:
12:  * 
13:  * The above copyright notice and this permission notice shall be included in all
14:  * copies or substantial portions of the Software.
15:  * 
16:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17:  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
18:  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
19:  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
20:  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21:  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22:  */
23: /**
24:  * PHP class file.
25:  * @auhtor trashtoy
26:  * @since  2.1.0
27:  */
28: namespace Peach\DF;
29: 
30: /**
31:  * {@link http://php.net/manual/function.serialize.php serialize()} と
32:  * {@link http://php.net/manual/function.unserialize.php unserialize()}
33:  * を利用して, resource 型以外の任意の値を文字列に変換したり,
34:  * 文字列から値を復元したりするための Codec です.
35:  */
36: class SerializationCodec implements Codec
37: {
38:     /**
39:      * このクラスはシングルトンです. 直接インスタンス化することは出来ません.
40:      */
41:     private function __construct() {}
42:     
43:     /**
44:      * このクラスのインスタンスを取得します.
45:      * @return SerializationCodec
46:      * @codeCoverageIgnore
47:      */
48:     public static function getInstance()
49:     {
50:         static $instance = null;
51:         if (!isset($instance)) {
52:             $instance = new self();
53:         }
54:         return $instance;
55:     }
56:     
57:     /**
58:      * serialize された値から元の値を復元します.
59:      * 
60:      * @param  string $text serialize された文字列
61:      * @return mixed        復元された値
62:      */
63:     public function decode($text)
64:     {
65:         return unserialize($text);
66:     }
67:     
68:     /**
69:      * 指定された値を serialize した結果を返します.
70:      * @param  mixed  $var serialize 対象の値
71:      * @return string      serialize した結果
72:      */
73:     public function encode($var)
74:     {
75:         return serialize($var);
76:     }
77: }
78: