StandardUtilities.java Source code

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Here is the source code for StandardUtilities.java

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/*
 * StandardUtilities.java - Various miscallaneous utility functions
 * :tabSize=8:indentSize=8:noTabs=false:
 * :folding=explicit:collapseFolds=1:
 *
 * Copyright (C) 1999, 2006 Matthieu Casanova, Slava Pestov
 * Portions copyright (C) 2000 Richard S. Hall
 * Portions copyright (C) 2001 Dirk Moebius
 *
 * This program 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 any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

//{{{ Imports
import javax.swing.text.Segment;
import java.util.Comparator;
import java.util.Stack;
//}}}

/**
 * Several tools that depends on JDK only.
 *
 * @author Matthieu Casanova
 * @version $Id: StandardUtilities.java 12884 2008-06-23 18:17:08Z kpouer $
 * @since 4.3pre5
 */
public class StandardUtilities {
    //{{{ getLeadingWhiteSpaceWidth() method
    /**
     * Returns the width of the leading white space in the specified
     * string.
     * @param str The string
     * @param tabSize The tab size
     */
    public static int getLeadingWhiteSpaceWidth(String str, int tabSize) {
        return getLeadingWhiteSpaceWidth((CharSequence) str, tabSize);
    } //}}}

    //{{{ getLeadingWhiteSpaceWidth() method
    /**
     * Returns the width of the leading white space in the specified
     * string.
     * @param str The string
     * @param tabSize The tab size
     * @since jEdit 4.3pre15
     */
    public static int getLeadingWhiteSpaceWidth(CharSequence str, int tabSize) {
        int whitespace = 0;
        loop: for (int i = 0; i < str.length(); i++) {
            switch (str.charAt(i)) {
            case ' ':
                whitespace++;
                break;
            case '\t':
                whitespace += tabSize - whitespace % tabSize;
                break;
            default:
                break loop;
            }
        }
        return whitespace;
    } //}}}

}