package org.vaadin.console.ansi;

 import java.util.HashMap;

 import java.util.Map;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 /**

  * Default converter for numeric-only ANSI codes. 

  * 

  * @author indvdum

  * 31.05.2011 13:55:47

  *

  */

 public class DefaultANSICodeConverter implements ANSICodeConverter {

 	protected static final Map<Integer, String> ANSI_CSS = new HashMap<Integer, String>();

 	static{

 		ANSI_CSS.put(0, "");

 		ANSI_CSS.put(1, "term-font-weight-bolder");

 		ANSI_CSS.put(2, "term-font-weight-lighter");

 		ANSI_CSS.put(3, "term-font-style-italic");

 		ANSI_CSS.put(4, "term-text-decoration-underline");

 		ANSI_CSS.put(5, "term-text-decoration-blink");

 		ANSI_CSS.put(6, "term-text-decoration-blink");

 		ANSI_CSS.put(9, "term-text-decoration-line-through");

 		ANSI_CSS.put(22, "term-font-weight-normal");

 		ANSI_CSS.put(24, "term-text-decoration-none");

 		ANSI_CSS.put(25, "term-text-decoration-none");

 		ANSI_CSS.put(29, "term-text-decoration-none");

 		ANSI_CSS.put(30, "term-color-black");

 		ANSI_CSS.put(31, "term-color-red");

 		ANSI_CSS.put(32, "term-color-green");

 		ANSI_CSS.put(33, "term-color-yellow");

 		ANSI_CSS.put(34, "term-color-blue");

 		ANSI_CSS.put(35, "term-color-purple");

 		ANSI_CSS.put(36, "term-color-teal");

 		ANSI_CSS.put(37, "term-color-silver");

 		ANSI_CSS.put(40, "term-background-color-black");

 		ANSI_CSS.put(41, "term-background-color-red");

 		ANSI_CSS.put(42, "term-background-color-green");

 		ANSI_CSS.put(43, "term-background-color-yellow");

 		ANSI_CSS.put(44, "term-background-color-blue");

 		ANSI_CSS.put(45, "term-background-color-purple");

 		ANSI_CSS.put(46, "term-background-color-teal");

 		ANSI_CSS.put(47, "term-background-color-silver");

 		ANSI_CSS.put(53, "term-text-decoration-overline");

 		ANSI_CSS.put(55, "term-text-decoration-none");

 	}

 	@Override

 	public String convertANSIToCSS(String ansiEscapeSequence) {

 		StringBuilder cssClasses = new StringBuilder("");

 		Matcher matcher = Pattern.compile(ANSI_PATTERN).matcher(ansiEscapeSequence);

 		if(!matcher.matches())

 			return cssClasses.toString();

 		String codes[] = matcher.group(2).split(";");

 		for(int i = 0; i < codes.length; i++){

 			if(!codes[i].matches("[0-9]+")) // processing only numeric codes

 				continue;

 			int nCode = Integer.valueOf(codes[i]);

 			if(nCode == 38){ // Set xterm-256 text color, nothing to do

 				i+=2;

 				continue;

 			}

 			if(nCode == 48){ // Set xterm-256 background color, nothing to do

 				i+=2;

 				continue;

 			}

 			String cssClass = getCSSClass(nCode);

 			if(cssClass == null)

 				continue;

 			cssClass = cssClass.trim();

 			if(cssClass.length() > 0)

 				cssClasses.append(cssClass).append(" "); 

 		}

 		return cssClasses.toString().trim();

 	}

 	/**

 	 * Converting one numeric ANSI code to one or many CSS-classes. 

 	 *

 	 * @param ansiCode ANSI code

 	 * @return CSS-class(es).

 	 */

 	protected String getCSSClass(int ansiCode) {

 		return ANSI_CSS.get(ansiCode);

 	}

 	/**

 	 * Converting one string ANSI code to one or many CSS-classes. 

 	 *

 	 * @param ansiCode ANSI code

 	 * @return CSS-class(es).

 	 */

 	protected String getCSSClass(String ansiCode) {

 		return "";

 	}

 }