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1 /* 2 * $Header: /home/cvs/jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/impl/TextScript.java,v 1.8 2002/06/25 19:12:29 jstrachan Exp $ 3 * $Revision: 1.8 $ 4 * $Date: 2002/06/25 19:12:29 $ 5 * 6 * ==================================================================== 7 * 8 * The Apache Software License, Version 1.1 9 * 10 * Copyright (c) 1999-2002 The Apache Software Foundation. All rights 11 * reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in 22 * the documentation and/or other materials provided with the 23 * distribution. 24 * 25 * 3. The end-user documentation included with the redistribution, if 26 * any, must include the following acknowlegement: 27 * "This product includes software developed by the 28 * Apache Software Foundation (http://www.apache.org/)." 29 * Alternately, this acknowlegement may appear in the software itself, 30 * if and wherever such third-party acknowlegements normally appear. 31 * 32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software 33 * Foundation" must not be used to endorse or promote products derived 34 * from this software without prior written permission. For written 35 * permission, please contact apache@apache.org. 36 * 37 * 5. Products derived from this software may not be called "Apache" 38 * nor may "Apache" appear in their names without prior written 39 * permission of the Apache Group. 40 * 41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * ==================================================================== 54 * 55 * This software consists of voluntary contributions made by many 56 * individuals on behalf of the Apache Software Foundation. For more 57 * information on the Apache Software Foundation, please see 58 * <http://www.apache.org/>;. 59 * 60 * $Id: TextScript.java,v 1.8 2002/06/25 19:12:29 jstrachan Exp $ 61 */ 62 package org.apache.commons.jelly.impl; 63 64 import java.io.Writer; 65 66 import org.apache.commons.jelly.JellyContext; 67 import org.apache.commons.jelly.Script; 68 import org.apache.commons.jelly.XMLOutput; 69 70 /*** <p><code>TextScript</code> outputs some static text.</p> 71 * 72 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> 73 * @version $Revision: 1.8 $ 74 */ 75 public class TextScript implements Script { 76 77 /*** the text output by this script */ 78 private String text; 79 80 public TextScript() { 81 } 82 83 public TextScript(String text) { 84 this.text = text; 85 } 86 87 public String toString() { 88 return super.toString() + "[text=" + text + "]"; 89 } 90 91 /*** 92 * Trims whitespace from the start and end of the text in this script 93 */ 94 public void trimWhitespace() { 95 this.text = text.trim(); 96 } 97 98 /*** 99 * Trims whitespace from the start of the text 100 */ 101 public void trimStartWhitespace() { 102 int index = 0; 103 for ( int length = text.length(); index < length; index++ ) { 104 char ch = text.charAt(index); 105 if (!Character.isWhitespace(ch)) { 106 break; 107 } 108 } 109 if ( index > 0 ) { 110 this.text = text.substring(index); 111 } 112 } 113 114 /*** 115 * Trims whitespace from the end of the text 116 */ 117 public void trimEndWhitespace() { 118 int index = text.length(); 119 while (--index > 0) { 120 char ch = text.charAt(index); 121 if (!Character.isWhitespace(ch)) { 122 break; 123 } 124 } 125 index++; 126 if ( index < text.length() ) { 127 this.text = text.substring(0,index); 128 } 129 } 130 131 /*** @return the text output by this script */ 132 public String getText() { 133 return text; 134 } 135 136 /*** Sets the text output by this script */ 137 public void setText(String text) { 138 this.text = text; 139 } 140 141 // Script interface 142 //------------------------------------------------------------------------- 143 public Script compile() { 144 return this; 145 } 146 147 /*** Evaluates the body of a tag */ 148 public void run(JellyContext context, XMLOutput output) throws Exception { 149 if ( text != null ) { 150 output.write(text); 151 } 152 } 153 }

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