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/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 *    distribution.
 *
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 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.codehaus.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
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 *    Foundation" must not be used to endorse or promote products derived
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 * ====================================================================
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 * This software consists of voluntary contributions made by many
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 */
package org.codehaus.plexus.interpolation.util;

/**
 * Code here was swiped from plexus-utils' StringUtils class, so
 * plexus-interpolation could be completely self-contained.
 *
 * @author jdcasey
 */
public class StringUtils {

    /**
     * Replace all occurrences of a String within another String.
     *
     * A null reference passed to this method is a no-op.
     *
     * @see #replace(String text, String repl, String with, int max)
     * @param text text to search and replace in
     * @param repl String to search for
     * @param with String to replace with
     * @return the text with any replacements processed
     */
    public static String replace(String text, String repl, String with) {
        return replace(text, repl, with, -1);
    }

    /**
     * Replace a String with another String inside a larger String,
     * for the first max values of the search String.
     *
     * A null reference passed to this method is a no-op.
     *
     * @param text text to search and replace in
     * @param repl String to search for
     * @param with String to replace with
     * @param max maximum number of values to replace, or -1 if no maximum
     * @return the text with any replacements processed
     */
    public static String replace(String text, String repl, String with, int max) {
        if ((text == null) || (repl == null) || (with == null) || (repl.length() == 0)) {
            return text;
        }

        StringBuilder buf = new StringBuilder(text.length());
        int start = 0, end;
        while ((end = text.indexOf(repl, start)) != -1) {
            buf.append(text, start, end).append(with);
            start = end + repl.length();

            if (--max == 0) {
                break;
            }
        }
        buf.append(text, start, text.length());
        return buf.toString();
    }

    public static String capitalizeFirstLetter(String data) {
        char firstChar = data.charAt(0);
        char titleCase = Character.toTitleCase(firstChar);
        if (firstChar == titleCase) {
            return data;
        }
        StringBuilder result = new StringBuilder(data.length());
        result.append(titleCase);
        result.append(data, 1, data.length());
        return result.toString();
    }
}