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<?php
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/**
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 * Validate all attributes in the tokens.
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 */
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class HTMLPurifier_Strategy_ValidateAttributes extends HTMLPurifier_Strategy
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{
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    /**
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     * @param HTMLPurifier_Token[] $tokens
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     * @param HTMLPurifier_Config $config
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     * @param HTMLPurifier_Context $context
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     * @return HTMLPurifier_Token[]
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     */
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    public function execute($tokens, $config, $context)
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    {
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        // setup validator
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        $validator = new HTMLPurifier_AttrValidator();
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        $token = false;
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        $context->register('CurrentToken', $token);
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        foreach ($tokens as $key => $token) {
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            // only process tokens that have attributes,
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            //   namely start and empty tags
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            if (!$token instanceof HTMLPurifier_Token_Start && !$token instanceof HTMLPurifier_Token_Empty) {
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                continue;
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            }
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            // skip tokens that are armored
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            if (!empty($token->armor['ValidateAttributes'])) {
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                continue;
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            }
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            // note that we have no facilities here for removing tokens
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            $validator->validateToken($token, $config, $context);
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        }
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        $context->destroy('CurrentToken');
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        return $tokens;
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    }
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}
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// vim: et sw=4 sts=4