/* ===============================================================================
*
* Part of the InfoGlue Content Management Platform (www.infoglue.org)
*
* ===============================================================================
*
* Copyright (C)
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2, as published by the
* Free Software Foundation. See the file LICENSE.html for more information.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY, including the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc. / 59 Temple
* Place, Suite 330 / Boston, MA 02111-1307 / USA.
*
* ===============================================================================
*/
package org.infoglue.deliver.taglib.common;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.servlet.jsp.JspException;
import org.infoglue.deliver.taglib.TemplateControllerTag;
/**
* This tag help modifying texts in different ways. An example is to html-encode strings or replace all
* whitespaces with or replacing linebreaks with <br/>
*/
public class TextTransformTag extends TemplateControllerTag
{
/**
* The universal version identifier.
*/
private static final long serialVersionUID = 8603406098980150888L;
/**
* The original text.
*/
private String text;
/**
* Should we encode i18n chars
*/
private boolean htmlEncode = false;
/**
* Should we replace linebreaks with something?
*/
private boolean replaceLineBreaks = false;
/**
* The string to replace linebreaks with
*/
private String lineBreakReplacer = "<br/>";
/**
* The linebreak char
*/
private String lineBreakChar = System.getProperty("line.separator");
/**
* What to replace
*/
private String replaceString = null;
/**
* What to replace with
*/
private String replaceWithString = null;
/**
* What to append before the text
*/
private String prefix = null;
/**
* If set - the string must match this to add the prefix
*/
private String addPrefixIfTextMatches = null;
/**
* If set - the string must match this to add the prefix
*/
private String addPrefixIfTextNotMatches = null;
/**
* What to append after the text
*/
private String suffix = null;
/**
* If set - the string must match this to add the suffix
*/
private String addSuffixIfTextMatches = null;
/**
* If set - the string must match this to add the suffix
*/
private String addSuffixIfTextNotMatches = null;
/**
* Default constructor.
*/
public TextTransformTag()
{
super();
}
/**
* Process the end tag. Modifies the string according to settings made.
*
* @return indication of whether to continue evaluating the JSP page.
* @throws JspException if an error occurred while processing this tag.
*/
public int doEndTag() throws JspException
{
String modifiedText = text;
try
{
if(replaceString != null && replaceWithString != null)
{
Pattern pattern = Pattern.compile(replaceString);
Matcher matcher = pattern.matcher(modifiedText);
modifiedText = matcher.replaceAll(replaceWithString);
}
if(replaceLineBreaks)
{
if(lineBreakChar.toCharArray().length == 1 && ((int)lineBreakChar.toCharArray()[0] == 10))
{
modifiedText = modifiedText.replaceAll("" + (char)13 + lineBreakChar, lineBreakReplacer);
}
modifiedText = modifiedText.replaceAll(lineBreakChar, lineBreakReplacer);
}
if(this.prefix != null)
{
if(this.addPrefixIfTextMatches != null)
{
Pattern pattern = Pattern.compile(this.addPrefixIfTextMatches);
Matcher matcher = pattern.matcher(modifiedText);
if(matcher.find())
modifiedText = this.prefix + modifiedText;
}
else if(this.addPrefixIfTextNotMatches != null)
{
Pattern pattern = Pattern.compile(this.addPrefixIfTextNotMatches);
Matcher matcher = pattern.matcher(modifiedText);
if(!matcher.find())
modifiedText = this.prefix + modifiedText;
}
else
{
modifiedText = this.prefix + modifiedText;
}
}
if(this.suffix != null)
{
if(this.addSuffixIfTextMatches != null)
{
Pattern pattern = Pattern.compile(this.addSuffixIfTextMatches);
Matcher matcher = pattern.matcher(modifiedText);
if(matcher.find())
modifiedText = modifiedText + this.suffix;
}
else if(this.addSuffixIfTextNotMatches != null)
{
Pattern pattern = Pattern.compile(this.addSuffixIfTextNotMatches);
Matcher matcher = pattern.matcher(modifiedText);
if(!matcher.find())
modifiedText = modifiedText + this.suffix;
}
else
{
modifiedText = modifiedText + this.suffix;
}
}
if(htmlEncode)
modifiedText = this.getController().getVisualFormatter().escapeHTMLforXMLService(modifiedText);
}
catch (Throwable t)
{
t.printStackTrace();
}
setResultAttribute(modifiedText);
this.text = null;
this.prefix = null;
this.suffix = null;
this.addPrefixIfTextMatches = null;
this.addPrefixIfTextNotMatches = null;
this.addSuffixIfTextMatches = null;
this.addSuffixIfTextNotMatches = null;
return EVAL_PAGE;
}
public void setText(String text) throws JspException
{
this.text = evaluateString("cropText", "text", text);
}
public void setHtmlEncode(boolean htmlEncode)
{
this.htmlEncode = htmlEncode;
}
public void setReplaceLineBreaks(boolean replaceLineBreaks)
{
this.replaceLineBreaks = replaceLineBreaks;
}
public void setLineBreakChar(String lineBreakChar) throws JspException
{
this.lineBreakChar = evaluateString("TextTransform", "lineBreakChar", lineBreakChar);
}
public void setLineBreakReplacer(String lineBreakReplacer) throws JspException
{
this.lineBreakReplacer = evaluateString("TextTransform", "lineBreakReplacer", lineBreakReplacer);
}
public void setReplaceString(String replaceString) throws JspException
{
this.replaceString = evaluateString("TextTransform", "replaceString", replaceString);
}
public void setReplaceWithString(String replaceWithString) throws JspException
{
this.replaceWithString = evaluateString("TextTransform", "replaceWithString", replaceWithString);
}
public void setPrefix(String prefix) throws JspException
{
this.prefix = evaluateString("TextTransform", "prefix", prefix);
}
public void setAddPrefixIfTextMatches(String addPrefixIfTextMatches) throws JspException
{
this.addPrefixIfTextMatches = evaluateString("TextTransform", "addPrefixIfTextMatches", addPrefixIfTextMatches);
}
public void setAddPrefixIfTextNotMatches(String addPrefixIfTextNotMatches) throws JspException
{
this.addPrefixIfTextNotMatches = evaluateString("TextTransform", "addPrefixIfTextNotMatches", addPrefixIfTextNotMatches);
}
public void setSuffix(String suffix) throws JspException
{
this.suffix = evaluateString("TextTransform", "suffix", suffix);
}
public void setAddSuffixIfTextMatches(String addSuffixIfTextMatches) throws JspException
{
this.addSuffixIfTextMatches = evaluateString("TextTransform", "addSuffixIfTextMatches", addSuffixIfTextMatches);
}
public void setAddSuffixIfTextNotMatches(String addSuffixIfTextNotMatches) throws JspException
{
this.addSuffixIfTextNotMatches = evaluateString("TextTransform", "addSuffixIfTextNotMatches", addSuffixIfTextNotMatches);
}
}