www.gusucode.com > wxApp PHP版微信小程序CMS系统 v1.0PHP源码程序 > wxApp PHP版微信小程序CMS系统 v1.0/wxAppCMS_v1.0.0/wxAppCMS_v1.0.0/iPHP/library/htmlpurifier-4.6.0/HTMLPurifier/AttrDef/CSS/Percentage.php
<?php /** * Validates a Percentage as defined by the CSS spec. */ class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef { /** * Instance to defer number validation to. * @type HTMLPurifier_AttrDef_CSS_Number */ protected $number_def; /** * @param bool $non_negative Whether to forbid negative values */ public function __construct($non_negative = false) { $this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative); } /** * @param string $string * @param HTMLPurifier_Config $config * @param HTMLPurifier_Context $context * @return bool|string */ public function validate($string, $config, $context) { $string = $this->parseCDATA($string); if ($string === '') { return false; } $length = strlen($string); if ($length === 1) { return false; } if ($string[$length - 1] !== '%') { return false; } $number = substr($string, 0, $length - 1); $number = $this->number_def->validate($number, $config, $context); if ($number === false) { return false; } return "$number%"; } } // vim: et sw=4 sts=4