63 lines
1.6 KiB
PHP
63 lines
1.6 KiB
PHP
|
<?php
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Copyright 1999-2021 iFLYTEK Corporation
|
|||
|
|
* Licensed 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 IFlytek\Xfyun\Speech\Helper;
|
|||
|
|
|
|||
|
|
use IFlytek\Xfyun\Speech\Constants\LfasrConstants;
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 转写切片ID生成类
|
|||
|
|
*
|
|||
|
|
* @author guizheng@iflytek.com
|
|||
|
|
*/
|
|||
|
|
class SliceIdGenerator
|
|||
|
|
{
|
|||
|
|
/**
|
|||
|
|
* @var string 当前切片ID
|
|||
|
|
*/
|
|||
|
|
private $id;
|
|||
|
|
|
|||
|
|
public function __construct()
|
|||
|
|
{
|
|||
|
|
$this->id = LfasrConstants::ORIGIN_SLICE_ID;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 返回当前切片ID，并生成下一个切片ID，赋值给对象的当前ID
|
|||
|
|
*
|
|||
|
|
* @return string
|
|||
|
|
*/
|
|||
|
|
public function getId()
|
|||
|
|
{
|
|||
|
|
$currentId = $this->id;
|
|||
|
|
$nextId = $currentId;
|
|||
|
|
$pos = strlen($currentId) - 1;
|
|||
|
|
while ($pos >= 0) {
|
|||
|
|
$charAtPos = $nextId[$pos];
|
|||
|
|
if ($charAtPos != 'z') {
|
|||
|
|
$nextId = substr($nextId, 0, $pos) . chr((ord($charAtPos) + 1)) . substr($nextId, $pos + 1);
|
|||
|
|
break;
|
|||
|
|
} else {
|
|||
|
|
$nextId = substr($nextId, 0, $pos) . 'a';
|
|||
|
|
$pos = $pos - 1;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
$this->id = $nextId;
|
|||
|
|
return $currentId;
|
|||
|
|
}
|
|||
|
|
}
|