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/jEdit/tags/jedit-4-2-pre14/org/gjt/sp/jedit/syntax/SyntaxUtilities.java

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Java | 65 lines | 26 code | 2 blank | 37 comment | 5 complexity | a7b5d3d519dffb2fbdee46f8d6c17a91 MD5 | raw file
 1/*
 2 * SyntaxUtilities.java - Utility functions
 3 * :tabSize=8:indentSize=8:noTabs=false:
 4 * :folding=explicit:collapseFolds=1:
 5 *
 6 * Copyright (C) 2003 Slava Pestov
 7 *
 8 * This program is free software; you can redistribute it and/or
 9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
21 */
22package org.gjt.sp.jedit.syntax;
23
24import javax.swing.text.Segment;
25
26/**
27 * Contains utility functions used by the syntax highlighting code.
28 * @since jEdit 4.2pre1
29 * @version $Id: SyntaxUtilities.java 4651 2003-04-28 01:35:29Z spestov $
30 * @author Slava Pestov
31 */
32public class SyntaxUtilities
33{
34	//{{{ regionMatches() method
35	/**
36	 * Checks if a subregion of a <code>Segment</code> is equal to a
37	 * character array.
38	 * @param ignoreCase True if case should be ignored, false otherwise
39	 * @param text The segment
40	 * @param offset The offset into the segment
41	 * @param match The character array to match
42	 * @since jEdit 4.2pre1
43	 */
44	public static boolean regionMatches(boolean ignoreCase, Segment text,
45		int offset, char[] match)
46	{
47		int length = offset + match.length;
48		if(length > text.offset + text.count)
49			return false;
50		char[] textArray = text.array;
51		for(int i = offset, j = 0; i < length; i++, j++)
52		{
53			char c1 = textArray[i];
54			char c2 = match[j];
55			if(ignoreCase)
56			{
57				c1 = Character.toUpperCase(c1);
58				c2 = Character.toUpperCase(c2);
59			}
60			if(c1 != c2)
61				return false;
62		}
63		return true;
64	} //}}}
65}