Main.java Source code

Introduction

Here is the source code for Main.java

Source

/*
 *  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. 
 *  
 */

/**
 * Various string manipulation methods that are more efficient then chaining
 * string operations: all is done in the same buffer without creating a bunch of
 * string objects.
 * 
 * @author <a href="mailto:dev@labs.apache.org">Dungeon Project</a>
 */
public class Main {

    /**
     * Trims several consecutive characters into one.
     * 
     * @param str
     *            the string to trim consecutive characters of
     * @param ch
     *            the character to trim down
     * @return the newly trimmed down string
     */
    public static final String trimConsecutiveToOne(String str, char ch) {
        if ((null == str) || (str.length() == 0)) {
            return "";
        }

        char[] buffer = str.toCharArray();
        char[] newbuf = new char[buffer.length];
        int pos = 0;
        boolean same = false;

        for (int i = 0; i < buffer.length; i++) {
            char car = buffer[i];

            if (car == ch) {
                if (same) {
                    continue;
                } else {
                    same = true;
                    newbuf[pos++] = car;
                }
            } else {
                same = false;
                newbuf[pos++] = car;
            }
        }

        return new String(newbuf, 0, pos);
    }

}