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1 | <?php |
2 | /* | |
3 | * Licensed to the Apache Software Foundation (ASF) under one | |
4 | * or more contributor license agreements. See the NOTICE file | |
5 | * distributed with this work for additional information | |
6 | * regarding copyright ownership. The ASF licenses this file | |
7 | * to you under the Apache License, Version 2.0 (the | |
8 | * "License"); you may not use this file except in compliance | |
9 | * with the License. You may obtain a copy of the License at | |
10 | * | |
11 | * http://www.apache.org/licenses/LICENSE-2.0 | |
12 | * | |
13 | * Unless required by applicable law or agreed to in writing, | |
14 | * software distributed under the License is distributed on an | |
15 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
16 | * KIND, either express or implied. See the License for the | |
17 | * specific language governing permissions and limitations | |
18 | * under the License. | |
19 | * | |
20 | */ | |
21 | ||
22 | namespace Thrift\Factory; | |
23 | ||
24 | use Thrift\StringFunc\Core; | |
25 | use Thrift\StringFunc\Mbstring; | |
26 | use Thrift\StringFunc\TStringFunc; | |
27 | ||
28 | class TStringFuncFactory | |
29 | { | |
30 | private static $_instance; | |
31 | ||
32 | /** | |
33 | * Get the Singleton instance of TStringFunc implementation that is | |
34 | * compatible with the current system's mbstring.func_overload settings. | |
35 | * | |
36 | * @return TStringFunc | |
37 | */ | |
38 | public static function create() | |
39 | { | |
40 | if (!self::$_instance) { | |
41 | self::_setInstance(); | |
42 | } | |
43 | ||
44 | return self::$_instance; | |
45 | } | |
46 | ||
47 | private static function _setInstance() | |
48 | { | |
49 | /** | |
50 | * Cannot use str* functions for byte counting because multibyte | |
51 | * characters will be read a single bytes. | |
52 | * | |
53 | * See: http://php.net/manual/en/mbstring.overload.php | |
54 | */ | |
55 | if (ini_get('mbstring.func_overload') & 2) { | |
56 | self::$_instance = new Mbstring(); | |
57 | } else { | |
58 | /** | |
59 | * mbstring is not installed or does not have function overloading | |
60 | * of the str* functions enabled so use PHP core str* functions for | |
61 | * byte counting. | |
62 | */ | |
63 | self::$_instance = new Core(); | |
64 | } | |
65 | } | |
66 | } |