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/*******************************************************************************
* Copyright (c) 2004, 2017 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.internal.intro.impl.util;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
public class StringUtil {
public static StringBuffer concat(String... strings) {
StringBuffer buffer = new StringBuffer();
for (String string : strings) {
buffer.append(string);
}
return buffer;
}
public static String decode(String s, String enc) throws UnsupportedEncodingException {
try {
return URLDecoder.decode(s, enc);
}
catch (Exception ex) {
// fall back to original string
return s;
}
}
// Removes leading and trailing whitespace and replaces other
// occurrences with a single space.
public static String normalizeWhiteSpace(String input) {
if (input == null) {
return null;
}
StringBuffer result = new StringBuffer();
boolean atStart = true;
boolean whitespaceToInsert = false;
for (int i = 0; i < input.length(); i++) {
char next = input.charAt(i);
if (Character.isWhitespace(next)) {
if (!atStart) {
whitespaceToInsert = true;
}
} else {
if (whitespaceToInsert) {
result.append(' ');
whitespaceToInsert = false;
}
atStart = false;
result.append(next);
}
}
return result.toString();
}
}
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