<?php

/**
 * Converts HTMLPurifier_ConfigSchema_Interchange to our runtime
 * representation used to perform checks on user configuration.
 */
class HTMLPurifier_ConfigSchema_Builder_ConfigSchema {
	
	/**
	 *
	 * @param HTMLPurifier_ConfigSchema_Interchange $interchange        	
	 * @return HTMLPurifier_ConfigSchema
	 */
	public function build($interchange) {
		$schema = new HTMLPurifier_ConfigSchema ();
		foreach ( $interchange->directives as $d ) {
			$schema->add ( $d->id->key, $d->default, $d->type, $d->typeAllowsNull );
			if ($d->allowed !== null) {
				$schema->addAllowedValues ( $d->id->key, $d->allowed );
			}
			foreach ( $d->aliases as $alias ) {
				$schema->addAlias ( $alias->key, $d->id->key );
			}
			if ($d->valueAliases !== null) {
				$schema->addValueAliases ( $d->id->key, $d->valueAliases );
			}
		}
		$schema->postProcess ();
		return $schema;
	}
}

// vim: et sw=4 sts=4