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<?php
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
namespace Thrift\Factory;
use Thrift\StringFunc\Core;
use Thrift\StringFunc\Mbstring;
use Thrift\StringFunc\TStringFunc;
class TStringFuncFactory
{
private static $_instance;
/**
* Get the Singleton instance of TStringFunc implementation that is
* compatible with the current system's mbstring.func_overload settings.
*
* @return TStringFunc
*/
public static function create()
{
if (!self::$_instance) {
self::_setInstance();
}
return self::$_instance;
}
private static function _setInstance()
{
/**
* Cannot use str* functions for byte counting because multibyte
* characters will be read a single bytes.
*
* See: http://php.net/manual/en/mbstring.overload.php
*/
if (ini_get('mbstring.func_overload') & 2) {
self::$_instance = new Mbstring();
} else {
/**
* mbstring is not installed or does not have function overloading
* of the str* functions enabled so use PHP core str* functions for
* byte counting.
*/
self::$_instance = new Core();
}
}
}
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