taglibutil.groovy

grails用户使用指南

/* Copyright 2004-2005 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT c;pWARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 /**
 * Tag lib utility methods
 *
 * @author Graeme Rocher
 * @since 3-Apr-2006
 */
class TagLibUtil {
	/**
	 * Helper method for writing the output to a string instead of the response writer
	 */	
	static def outToString(tag,attrs) {
		def sw = new StringWriter()
		def result = null
		def saveOut = tag.delegate.out		
		try {
			tag.delegate.out = new PrintWriter(sw)
			if(tag) {
				tag(attrs)
			}
		}
		finally {
			tag.delegate.out = saveOut;
		}
		return sw.toString()
	}
}