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<?php

/**

* Decorator that, depending on a token, switches between two definitions.

class HTMLPurifier_AttrDef_Switch

{

/**

* @type string

protected $tag;

/**

* @type HTMLPurifier_AttrDef

protected $withTag;

/**

* @type HTMLPurifier_AttrDef

protected $withoutTag;

/**

* @param string $tag Tag name to switch upon

* @param HTMLPurifier_AttrDef $with_tag Call if token matches tag

* @param HTMLPurifier_AttrDef $without_tag Call if token doesn't match, or there is no token

public function __construct($tag, $with_tag, $without_tag)

{

$this->tag = $tag;

$this->withTag = $with_tag;

$this->withoutTag = $without_tag;

}

/**

* @param string $string

* @param HTMLPurifier_Config $config

* @param HTMLPurifier_Context $context

* @return bool|string

public function validate($string, $config, $context)

{

$token = $context->get('CurrentToken', true);

if (!$token || $token->name !== $this->tag) {

return $this->withoutTag->validate($string, $config, $context);

} else {

return $this->withTag->validate($string, $config, $context);

}

// vim: et sw=4 sts=4

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