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  net.jot.utils. JOTHTMLUtilities View Javadoc
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/*
------------------------------------
JavaOnTracks          Thibaut Colar
tcolar-jot AT colar DOT net
Artistic Licence 2.0
http://www.javaontracks.net
------------------------------------
 */
package net.jot.utils;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import net.jot.logger.JOTLogger;
import net.jot.web.view.JOTViewParser;

/**
 * Utilities for HTML processing
 * @author thibautc
 */
public class JOTHTMLUtilities {
	public static final int ENCODE_HTML_CHARS = 1;
	public static final int ENCODE_LINE_BREAKS=2;
	public static final int ENCODE_SYMBOLS=4;
	public static final int ENCODE_CURLEYS=8;
	public static final int ENCODE_ALL=16383;

	private static final int PATTERN_FLAGS_MULTI=Pattern.CASE_INSENSITIVE | Pattern.DOTALL | Pattern.MULTILINE | Pattern.CANON_EQ;
	private static final Pattern PATTERN_LINE_BREAKS=Pattern.compile("\n",PATTERN_FLAGS_MULTI);
	
        /**
         * Encode a text into HTML, ie: process & > < lineBreaks symbols etc...
         * This methods converts everyhting it can.
         * @param text
         * @return
         */
	public static String textToHtml(String text)
	{
		//do curleys before chars
		return textToHtml(text, ENCODE_ALL);
	}

        /**
         * Encode a text into HTML, converting only what requested using the flags.
         * falgs example: ENCODE_LINE_BREAKS | ENCODE_CURLEYS
         * @param text
         * @param flags
         * @return
         */
	public static String textToHtml(String text, int flags)
	{
		JOTLogger.log(JOTLogger.DEBUG_LEVEL, JOTHTMLUtilities.class, "Replacing chars for.");

		if((flags & ENCODE_HTML_CHARS)>0)
		{
			text=text.replaceAll("&", "&amp;");
			text=text.replaceAll("<", "&lt;");
			text=text.replaceAll(">", "&gt;");
		}
		
		/*if((flags & ENCODE_CURLEYS)>0)
		{
			text=doCurleys(text);
		}
		else
		{
			text=doStraight(text);
		}*/
		if((flags & ENCODE_SYMBOLS)>0)
		{
			text=doSymbols(text);
		}
		if((flags & ENCODE_LINE_BREAKS)>0)
		{
			text=doLineBreaks(text);
		}
		return text;
	}
	
	
	private static String doLineBreaks(String page) 
	{
		// REPLACE CARRIAGE RETURNS BY <BR>
		Matcher m=PATTERN_LINE_BREAKS.matcher(page);
		StringBuffer buf=new StringBuffer();
		while(m.find())
		{
			JOTViewParser.safeAppendReplacement(m,buf,"<br/>\n");	
		}
		m.appendTail(buf);
		page=buf.toString();
		return page;
	}

	public static String doSymbols(String s)
	{
		//sepcial symbols
		s=s.replaceAll("\\(c\\)", "&copy;");
		s=s.replaceAll("\\(tm\\)", "&trade;");
		s=s.replaceAll("\\(r\\)", "&reg;");
		// real symbols
		s=s.replaceAll("�", "&copy;");
		s=s.replaceAll("�", "&trade;");
		s=s.replaceAll("�", "&reg;");
		// currencies
		s=s.replaceAll("�", "&yen;");
		s=s.replaceAll("�", "&euro;");
		s=s.replaceAll("�", "&pound;");
		s=s.replaceAll("�", "&cent;");
		s=s.replaceAll("�", "&curren;");
		// punctuations,quotes etc ..
		s=s.replaceAll("�", "&ldquo;");		
		s=s.replaceAll("�", "&rdquo;");		
		s=s.replaceAll("�", "&sbquo;");		
		s=s.replaceAll("�", "&rsquo;");		
		s=s.replaceAll("�", "&iexcl;");
		s=s.replaceAll("�", "&bdquo;");
		s=s.replaceAll("�", "&brkbar;");
		s=s.replaceAll("�", "&ordf;");
		s=s.replaceAll("�", "&laquo;");
		s=s.replaceAll("�", "&raquo;");
		s=s.replaceAll("�", "&lsaquo;");
		s=s.replaceAll("�", "&rsaquo;");
		s=s.replaceAll("�", "&middot;");
		s=s.replaceAll("�", "&mdash;");
		s=s.replaceAll("�", "&ndash;");	
		// symbols
		s=s.replaceAll("�", "&dagger;");
		s=s.replaceAll("�", "&Dagger;");
		s=s.replaceAll("�", "&sect;");
		s=s.replaceAll("�", "&para;");
		// math
		s=s.replaceAll("�", "&deg;");
		s=s.replaceAll("�", "&plusmn;");
		s=s.replaceAll("�", "&sup1;");
		s=s.replaceAll("�", "&sup2;");
		s=s.replaceAll("�", "&sup3;");
		s=s.replaceAll("�", "&ordm;");
		s=s.replaceAll("�", "&frac14;");
		s=s.replaceAll("�", "&frac12;");
		s=s.replaceAll("�", "&frac34;");
		s=s.replaceAll("�", "&divide;");
		s=s.replaceAll("�", "&micro;");
		s=s.replaceAll("�", "&not;");
		s=s.replaceAll("�", "&permil;");
		
		// single accents
		s=s.replaceAll("�", "&cedil;");
		s=s.replaceAll("�", "&acute;");
		s=s.replaceAll("�", "&macr;");
		s=s.replaceAll("�", "uml;");
		
		// lowercase accents
		s=s.replaceAll("�", "&agrave;");
		s=s.replaceAll("�", "&aacute;");
		s=s.replaceAll("�", "&aacirc;");
		s=s.replaceAll("�", "&atilde;");
		s=s.replaceAll("�", "&auml;");
		s=s.replaceAll("�", "&aring;");
		s=s.replaceAll("�", "&aelig;");
		s=s.replaceAll("�", "&egrave;");
		s=s.replaceAll("�", "&eacute;");
		s=s.replaceAll("�", "&eacirc;");
		s=s.replaceAll("�", "&euml;");
		s=s.replaceAll("�", "&igrave;");
		s=s.replaceAll("�", "&iacute;");
		s=s.replaceAll("�", "&iacirc;");
		s=s.replaceAll("�", "&iuml;");
		s=s.replaceAll("�", "&ograve;");
		s=s.replaceAll("�", "&oacute;");
		s=s.replaceAll("�", "&oacirc;");
		s=s.replaceAll("�", "&otilde;");
		s=s.replaceAll("�", "&ouml;");
		s=s.replaceAll("�", "&ugrave;");
		s=s.replaceAll("�", "&uacute;");
		s=s.replaceAll("�", "&uacirc;");
		s=s.replaceAll("�", "&uuml;");
		s=s.replaceAll("�", "&yacute;");
		s=s.replaceAll("�", "&yuml;");
		// uppercase accents
		s=s.replaceAll("�", "&Agrave;");
		s=s.replaceAll("�", "&Aacute;");
		s=s.replaceAll("�", "&Aacirc;");
		s=s.replaceAll("�", "&Atilde;");
		s=s.replaceAll("�", "&Auml;");
		s=s.replaceAll("�", "&Aring;");
		s=s.replaceAll("�", "&AElig;");
		s=s.replaceAll("�", "&Egrave;");
		s=s.replaceAll("�", "&Eacute;");
		s=s.replaceAll("�", "&Eacirc;");
		s=s.replaceAll("�", "&Euml;");
		s=s.replaceAll("�", "&Igrave;");
		s=s.replaceAll("�", "&Iacute;");
		s=s.replaceAll("�", "&Iacirc;");
		s=s.replaceAll("�", "&Iuml;");
		s=s.replaceAll("�", "&Ograve;");
		s=s.replaceAll("�", "&Oacute;");
		s=s.replaceAll("�", "&Oacirc;");
		s=s.replaceAll("�", "&Otilde;");
		s=s.replaceAll("�", "&Ouml;");
		s=s.replaceAll("�", "&Ugrave;");
		s=s.replaceAll("�", "&Uacute;");
		s=s.replaceAll("�", "&Uacirc;");
		s=s.replaceAll("�", "&Uuml;");
		s=s.replaceAll("�", "&Yacute;");
		// other foreign
		s=s.replaceAll("�", "&Ccedil;");		
		s=s.replaceAll("�", "&ccedil;");		
		s=s.replaceAll("�", "&iquest;");
		s=s.replaceAll("�", "&ETH;");
		s=s.replaceAll("�", "&eth;");
		s=s.replaceAll("�", "&Ntilde;");
		s=s.replaceAll("�", "&ntilde;");
		s=s.replaceAll("�", "&Ntimes;");
		s=s.replaceAll("�", "&Oslash;");
		s=s.replaceAll("�", "&oslash;");
		s=s.replaceAll("�", "&THORN;");
		s=s.replaceAll("�", "&thorn;");
		s=s.replaceAll("�", "&szlig");
		
		return s;
	}

	public static String doCurleys(String s)
	{
		s=s.replaceAll("'", "&#8217;");
		s=s.replaceAll("\"(.*)\"", "&#8220;$1&#8221;");
		return s;
	}
	
        /**
         * Straight quotes
         * @param s
         * @return
         */
	public static String doStraight(String s)
	{
		s=s.replaceAll("\"", "&quot;");
		s=s.replaceAll("�", "&lsquo;");		
		return s;
	}
	
}

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