ASUtils.java

/**
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *   jAstyle library includes in most of its parts translated C++ code originally
 *   developed by Jim Pattee and Tal Davidson for the Artistic Style project.
 *
 *   Copyright (C) 2009 by Hector Suarez Barenca http://barenca.net
 *   Copyright (C) 2013 by Abrar Syed <sacabrarsyed@gmail.com>
 *   Copyright (C) 2006-2008 by Jim Pattee <jimp03@email.com>
 *   Copyright (C) 1998-2002 by Tal Davidson
 *   <http://www.gnu.org/licenses/lgpl-3.0.html>
 *
 *   This file is a part of jAstyle library - an indentation and
 *   reformatting library for C, C++, C# and Java source files.
 *   <http://jastyle.sourceforge.net>
 *
 *   jAstyle is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   jAstyle 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 Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with jAstyle.  If not, see <http://www.gnu.org/licenses/>.
 *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 */

package decompsource.com.github.abrarsyed.jastyle;

class ASUtils
{
    protected static final String WHITE_SPACE = " \t";

    public static boolean isPunct(char c)
    {
        return '!' <= c && c <= '/' || ':' <= c && c <= '@' || '[' <= c && c <= '`' || '{' <= c && c <= '~';

    }

    /**
     * Searches for the last character in the object which is not part of either
     * str, s or c, and returns its position.
     *
     * @param in
     * @param chars string containing the characters to match against in the
     *              object.
     * @return
     */
    public static int findLastNotOf(StringBuilder in, String chars)
    {
        return findLastNotOf(in, chars, 0);
    }

    /**
     * Searches for the last character in the object which is not part of either
     * str, s or c, and returns its position.
     *
     * @param in
     * @param chars string containing the characters to match against in the
     *              object.
     * @param end   Position of the last character in the string to be taken into
     *              consideration for matches. The default value npos indicates
     *              that the entire string is considered.
     * @return
     */
    public static int findLastNotOf(StringBuilder in, String chars, int end)
    {
        for (int index = in.length() - 1; index >= end; index--)
        {
            char ch = in.charAt(index);
            if (chars.indexOf(ch) < 0)
            {
                return index;
            }
        }
        return -1;
    }

    public static int findFirstNotOf(StringBuilder in, String chars)
    {
        return findFirstNotOf(in, chars, 0);
    }

    public static int findFirstNotOf(StringBuilder in, String chars, int start)
    {
        for (int index = start; index < in.length(); index++)
        {
            char ch = in.charAt(index);
            if (chars.indexOf(ch) < 0)
            {
                return index;
            }
        }
        return -1;
    }

    /**
     * Repite el caracter el número de veces indicado
     *
     * @param times
     * @param ch
     * @return
     */
    public static String repeat(int times, char ch)
    {
        StringBuilder sb = new StringBuilder(times);
        for (int i = 0; i < times; i++)
        {
            sb.append(ch);
        }
        return sb.toString();
    }
}