<?php
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/**
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* PhalApi_Request_Formatter_String 格式化字符串
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* @package PhalApi\Request
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* @license http://www.phalapi.net/license GPL 协议
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* @link http://www.phalapi.net/
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* @author dogstar <chanzonghuang@gmail.com> 2015-11-07
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*/
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class PhalApi_Request_Formatter_String extends PhalApi_Request_Formatter_Base implements PhalApi_Request_Formatter {
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/**
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* 对字符串进行格式化
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*
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* @param mixed $value 变量值
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* @@param array $rule array('len' => ‘最长长度’)
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*
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* @return string 格式化后的变量
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*/
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public function parse($value, $rule) {
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$rs = strval($this->filterByStrLen(strval($value), $rule));
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$this->filterByRegex($rs, $rule);
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return $rs;
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}
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/**
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* 根据字符串长度进行截取
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*/
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protected function filterByStrLen($value, $rule) {
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$lenRule = $rule;
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$lenRule['name'] = $lenRule['name'] . '.len';
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$lenValue = !empty($lenRule['format']) ? mb_strlen($value, $lenRule['format']) : strlen($value);
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$this->filterByRange($lenValue, $lenRule);
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return $value;
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}
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/**
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* 进行正则匹配
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*/
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protected function filterByRegex($value, $rule) {
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if (!isset($rule['regex']) || empty($rule['regex'])) {
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return;
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}
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//如果你看到此行报错，说明提供的正则表达式不合法
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if (preg_match($rule['regex'], $value) <= 0) {
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throw new PhalApi_Exception_BadRequest(T('{name} can not match {regex}', array('name' => $rule['name'],
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'regex' => $rule['regex']
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)));
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}
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}
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}
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