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https://github.com/renbaoshuo/S2OJ.git
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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
72 lines
2.0 KiB
PHP
72 lines
2.0 KiB
PHP
<?php
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/**
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* Framework class for strings that involve multiple values.
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*
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* Certain CSS properties such as border-width and margin allow multiple
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* lengths to be specified. This class can take a vanilla border-width
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* definition and multiply it, usually into a max of four.
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*
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* @note Even though the CSS specification isn't clear about it, inherit
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* can only be used alone: it will never manifest as part of a multi
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* shorthand declaration. Thus, this class does not allow inherit.
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*/
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class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef
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{
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/**
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* Instance of component definition to defer validation to.
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* @type HTMLPurifier_AttrDef
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* @todo Make protected
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*/
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public $single;
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/**
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* Max number of values allowed.
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* @todo Make protected
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*/
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public $max;
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/**
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* @param HTMLPurifier_AttrDef $single HTMLPurifier_AttrDef to multiply
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* @param int $max Max number of values allowed (usually four)
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*/
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public function __construct($single, $max = 4)
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{
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$this->single = $single;
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$this->max = $max;
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}
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/**
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* @param string $string
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return bool|string
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*/
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public function validate($string, $config, $context)
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{
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$string = $this->parseCDATA($string);
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if ($string === '') {
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return false;
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}
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$parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n
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$length = count($parts);
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$final = '';
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for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) {
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if (ctype_space($parts[$i])) {
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continue;
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}
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$result = $this->single->validate($parts[$i], $config, $context);
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if ($result !== false) {
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$final .= $result . ' ';
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$num++;
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}
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}
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if ($final === '') {
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return false;
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}
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return rtrim($final);
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}
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}
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// vim: et sw=4 sts=4
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