StringUtil.java Source code

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Here is the source code for StringUtil.java

Source

/*
 * Cobertura - http://cobertura.sourceforge.net/
 *
 * Copyright (C) 2005 Jeremy Thomerson
 *
 * Note: This file is dual licensed under the GPL and the Apache
 * Source License (so that it can be used from both the main
 * Cobertura classes and the ant tasks).
 *
 * Cobertura is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2 of the License,
 * or (at your option) any later version.
 *
 * Cobertura is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Cobertura; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

import java.text.NumberFormat;

/**
 * Abstract, not to be instantiated utility class for String functions.
 * 
 * @author Jeremy Thomerson
 */
public abstract class StringUtil {

    /**
     * <p>
     * Replaces all instances of "replace" with "with" from the "original"
     * string.
     * </p>
     *
     * <p>
     * NOTE: it is known that a similar function is included in jdk 1.4 as replaceAll(),
     * but is written here so as to allow backward compatibility to users using SDK's
     * prior to 1.4
     * </p>
     * 
     * @param original The original string to do replacement on.
     * @param replace The string to replace.
     * @param with The string to replace "replace" with.
     * @return The replaced string.
     */
    public static String replaceAll(String original, String replace, String with) {
        if (original == null) {
            return original;
        }

        final int len = replace.length();
        StringBuffer sb = new StringBuffer(original.length());
        int start = 0;
        int found = -1;

        while ((found = original.indexOf(replace, start)) != -1) {
            sb.append(original.substring(start, found));
            sb.append(with);
            start = found + len;
        }

        sb.append(original.substring(start));
        return sb.toString();
    }

    /**
     * Takes a double and turns it into a percent string.
     * Ex.  0.5 turns into 50%
     * 
     * @param value
     * @return corresponding percent string
     */
    public static String getPercentValue(double value) {
        //moved from HTMLReport.getPercentValue()
        value = Math.floor(value * 100) / 100; //to represent 199 covered lines from 200 as 99% covered, not 100 %
        return NumberFormat.getPercentInstance().format(value);
    }

}