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    1   /*
    2    * Copyright 2002,2004 The Apache Software Foundation.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  package org.apache.commons.jelly.util;
    17
    18  import org.apache.commons.jelly.Script;
    19  import org.apache.commons.jelly.impl.CompositeTextScriptBlock;
    20  import org.apache.commons.jelly.impl.ScriptBlock;
    21  import org.apache.commons.jelly.impl.TextScript;
    22
    23  /*** Contains static methods to help tag developers.
    24   * @author Hans Gilde
    25   *
    26   */
    27  public class TagUtils {
    28      private TagUtils() {
    29
    30      }
    31
    32      /*** Trims the whitespace from a script and its children.
    33       *
    34       */
    35      public static void trimScript(Script body) {
    36          synchronized(body) {
    37              if ( body instanceof CompositeTextScriptBlock ) {
    38                  CompositeTextScriptBlock block = (CompositeTextScriptBlock) body;
    39                  block.trimWhitespace();
    40              }
    41              else
    42              if ( body instanceof ScriptBlock ) {
    43                  ScriptBlock block = (ScriptBlock) body;
    44                  block.trimWhitespace();
    45              }
    46              else if ( body instanceof TextScript ) {
    47                  TextScript textScript = (TextScript) body;
    48                  textScript.trimWhitespace();
    49              }
    50          }
    51      }
    52
    53  }