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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.afp.util;
/**
* Library of utility methods useful in dealing with strings.
*
*/
public final class StringUtils {
private StringUtils() {
}
/**
* Padds the string to the left with the given character for
* the specified length.
* @param input The input string.
* @param padding The char used for padding.
* @param length The length of the new string.
* @return The padded string.
*/
public static String lpad(String input, char padding, int length) {
if (input == null) {
input = new String();
}
if (input.length() >= length) {
return input;
} else {
StringBuffer result = new StringBuffer();
int numChars = length - input.length();
for (int i = 0; i < numChars; i++) {
result.append(padding);
}
result.append(input);
return result.toString();
}
}
/**
* Padds the string to the right with the given character for
* the specified length.
* @param input The input string.
* @param padding The char used for padding.
* @param length The length of the new string.
* @return The padded string.
*/
public static String rpad(String input, char padding, int length) {
if (input == null) {
input = new String();
}
if (input.length() >= length) {
return input;
} else {
StringBuffer result = new StringBuffer(input);
int numChars = length - input.length();
for (int i = 0; i < numChars; i++) {
result.append(padding);
}
return result.toString();
}
}
}
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