<?php

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

// vim: et sw=4 sts=4