mirror of
https://github.com/ezyang/htmlpurifier.git
synced 2024-12-23 17:01:51 +00:00
55 lines
2.2 KiB
PHP
55 lines
2.2 KiB
PHP
<?php
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class HTMLPurifier_Injector_RemoveEmpty extends HTMLPurifier_Injector
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{
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private $context, $config, $attrValidator, $removeNbsp, $removeNbspExceptions;
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// TODO: make me configurable
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private $_exclude = array('colgroup' => 1, 'th' => 1, 'td' => 1, 'iframe' => 1);
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public function prepare($config, $context) {
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parent::prepare($config, $context);
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$this->config = $config;
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$this->context = $context;
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$this->removeNbsp = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp');
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$this->removeNbspExceptions = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions');
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$this->attrValidator = new HTMLPurifier_AttrValidator();
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}
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public function handleElement(&$token) {
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if (!$token instanceof HTMLPurifier_Token_Start) return;
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$next = false;
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for ($i = $this->inputIndex + 1, $c = count($this->inputTokens); $i < $c; $i++) {
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$next = $this->inputTokens[$i];
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if ($next instanceof HTMLPurifier_Token_Text) {
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if ($next->is_whitespace) continue;
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if ($this->removeNbsp && !isset($this->removeNbspExceptions[$token->name])) {
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$plain = str_replace("\xC2\xA0", "", $next->data);
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$isWsOrNbsp = $plain === '' || ctype_space($plain);
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if ($isWsOrNbsp) continue;
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}
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}
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break;
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}
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if (!$next || ($next instanceof HTMLPurifier_Token_End && $next->name == $token->name)) {
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if (isset($this->_exclude[$token->name])) return;
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$this->attrValidator->validateToken($token, $this->config, $this->context);
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$token->armor['ValidateAttributes'] = true;
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if (isset($token->attr['id']) || isset($token->attr['name'])) return;
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$token = $i - $this->inputIndex + 1;
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for ($b = $this->inputIndex - 1; $b > 0; $b--) {
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$prev = $this->inputTokens[$b];
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if ($prev instanceof HTMLPurifier_Token_Text && $prev->is_whitespace) continue;
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break;
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}
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// This is safe because we removed the token that triggered this.
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$this->rewind($b - 1);
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return;
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}
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}
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}
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// vim: et sw=4 sts=4
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