Mega Code Archive
Abbreviate string
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/**
* $Revision: 10205 $
* $Date: 2008-04-11 15:48:27 -0700 (Fri, 11 Apr 2008) $
*
* Copyright (C) 2004-2008 Jive Software. All rights reserved.
*
* This software is published under the terms of the GNU Public License (GPL),
* a copy of which is included in this distribution, or a commercial license
* agreement with Jive.
*/
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.BreakIterator;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
/**
* Utility class to peform common String manipulation algorithms.
*/
public class StringUtils {
// Constants used by escapeHTMLTags
private static final char[] QUOTE_ENCODE = """.toCharArray();
private static final char[] AMP_ENCODE = "&".toCharArray();
private static final char[] LT_ENCODE = "<".toCharArray();
private static final char[] GT_ENCODE = ">".toCharArray();
private StringUtils() {
// Not instantiable.
}
/**
* Abbreviates a string to a specified length and then adds an ellipsis
* if the input is greater than the maxWidth. Example input:
* <pre>
* user1@jivesoftware.com/home
* </pre>
* and a maximum length of 20 characters, the abbreviate method will return:
* <pre>
* user1@jivesoftware.c...
* </pre>
* @param str the String to abbreviate.
* @param maxWidth the maximum size of the string, minus the ellipsis.
* @return the abbreviated String, or <tt>null</tt> if the string was <tt>null</tt>.
*/
public static String abbreviate(String str, int maxWidth) {
if (null == str) {
return null;
}
if (str.length() <= maxWidth) {
return str;
}
return str.substring(0, maxWidth) + "...";
}
}
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