/** *  */package lazyj.page.tags;import lazyj.page.StringFormat;/** * <i>dash</i> replaces all non-alphanumeric sequences of characters each with a single dash.  *  * @author costing * @since 2006-10-13 * @see Under */public final class Dash implements StringFormat {	/**	 * Dashify a string (leave all the letters and digits, everything else is colapsed into '-')	 * 	 * @param sTag ignored	 * @param sOption always "dash"	 * @param sValue original string	 * @return dashified version of the original string	 */	public String format(final String sTag, final String sOption, final String sValue) {		return format(sValue);	}	/**	 * Publicly available method to transform a string into a dashed representation of it, good to be 	 * used in rewritten URLs.	 * 	 * @param sValue string to format	 * @return dashified version of the string	 */	public static final String format(final String sValue){		if (sValue==null || sValue.length()==0)			return sValue;				final StringBuilder sb2 = new StringBuilder(sValue.length());		char cOld = '-';		for (int k = 0; k < sValue.length(); k++) {			char c = sValue.charAt(k);			if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9')) {				sb2.append(c);				cOld = c;			} else {				if (cOld != '-') {					sb2.append('-');					cOld = '-';				}			}		}		return sb2.toString();			}	}