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/* ====================================================================
 * The Apache Software License, Version 1.1
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 * Copyright (c) 2002 The Apache Software Foundation.  All rights
 * reserved.
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 * modification, are permitted provided that the following conditions
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 *
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 *    notice, this list of conditions and the following disclaimer.
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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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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
 * @version $Id$
 */
public class StringUtils
{

    /**
     * Replace all occurances 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();
    }

}