1 /** 2 * This file Copyright (c) 2012 Magnolia International 3 * Ltd. (http://www.magnolia-cms.com). All rights reserved. 4 * 5 * 6 * This file is dual-licensed under both the Magnolia 7 * Network Agreement and the GNU General Public License. 8 * You may elect to use one or the other of these licenses. 9 * 10 * This file is distributed in the hope that it will be 11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the 12 * implied warranty of MERCHANTABILITY or FITNESS FOR A 13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. 14 * Redistribution, except as permitted by whichever of the GPL 15 * or MNA you select, is prohibited. 16 * 17 * 1. For the GPL license (GPL), you can redistribute and/or 18 * modify this file under the terms of the GNU General 19 * Public License, Version 3, as published by the Free Software 20 * Foundation. You should have received a copy of the GNU 21 * General Public License, Version 3 along with this program; 22 * if not, write to the Free Software Foundation, Inc., 51 23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 24 * 25 * 2. For the Magnolia Network Agreement (MNA), this file 26 * and the accompanying materials are made available under the 27 * terms of the MNA which accompanies this distribution, and 28 * is available at http://www.magnolia-cms.com/mna.html 29 * 30 * Any modifications to this file must keep this entire header 31 * intact. 32 * 33 */ 34 package info.magnolia.templating.jsp.taglib; 35 36 import java.io.IOException; 37 import java.util.StringTokenizer; 38 39 import javax.servlet.jsp.JspException; 40 import javax.servlet.jsp.JspTagException; 41 import javax.servlet.jsp.JspWriter; 42 import javax.servlet.jsp.tagext.BodyTagSupport; 43 44 import org.apache.commons.lang.StringUtils; 45 46 import org.tldgen.annotations.BodyContent; 47 import org.tldgen.annotations.Tag; 48 49 /** 50 * Converts text in the body of the tag adding <br /> tags at new lines or wrapping lines in paragraphs. 51 * @jsp.tag name="newlines" body-content="JSP" 52 * 53 * @author Fabrizio Giustina 54 * @version $Revision $ ($Author $) 55 */ 56 @Tag(name="newlines", bodyContent=BodyContent.JSP) 57 58 public class ConvertNewLineTag extends BodyTagSupport { 59 60 /** 61 * Stable serialVersionUID. 62 */ 63 private static final long serialVersionUID = 222L; 64 65 /** 66 * Use paragraphs. 67 */ 68 private boolean para; 69 70 /** 71 * If true each line will be wrapped in a <p> tag. Default to false (use br's). 72 * @jsp.attribute required="false" rtexprvalue="true" type="boolean" 73 */ 74 public void setPara(boolean paragraphs) { 75 this.para = paragraphs; 76 } 77 78 /** 79 * @see javax.servlet.jsp.tagext.Tag#doEndTag() 80 */ 81 @Override 82 public int doEndTag() throws JspException { 83 String bodyText = bodyContent.getString(); 84 85 if (StringUtils.isNotEmpty(bodyText)) { 86 StringTokenizer bodyTk = new StringTokenizer(bodyText, "\n", false); 87 JspWriter out = pageContext.getOut(); 88 89 try { 90 if (this.para) { 91 // wrap text in p 92 while (bodyTk.hasMoreTokens()) { 93 out.write("<p>"); 94 out.write(StringUtils.replaceChars(bodyTk.nextToken(), (char) 63, '\'')); 95 out.write("</p>"); 96 } 97 } 98 else { 99 // add newlines 100 while (bodyTk.hasMoreTokens()) { 101 out.write(StringUtils.replaceChars(bodyTk.nextToken(), (char) 63, '\'')); 102 if (bodyTk.hasMoreTokens()) { 103 out.write("<br/>"); 104 } 105 } 106 } 107 } 108 catch (IOException e) { 109 throw new JspTagException(e.getMessage()); 110 } 111 } 112 return EVAL_PAGE; 113 } 114 115 /** 116 * @see javax.servlet.jsp.tagext.Tag#release() 117 */ 118 @Override 119 public void release() { 120 para = false; 121 super.release(); 122 } 123 124 }