1 /*
2 * Copyright (C) 2014, Andrey Loskutov <loskutov@gmx.de>
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43 package org.eclipse.jgit.ignore.internal;
44
45 /**
46 * Matcher for simple regex patterns starting with an asterisk, e.g. "*.tmp"
47 *
48 * @since 3.6
49 */
50 public class LeadingAsteriskMatcher extends NameMatcher {
51
52 LeadingAsteriskMatcher(String pattern, Character pathSeparator, boolean dirOnly) {
53 super(pattern, pathSeparator, dirOnly, true);
54
55 if (subPattern.charAt(0) != '*')
56 throw new IllegalArgumentException(
57 "Pattern must have leading asterisk: " + pattern); //$NON-NLS-1$
58 }
59
60 public boolean matches(String segment, int startIncl, int endExcl,
61 boolean assumeDirectory) {
62 // faster local access, same as in string.indexOf()
63 String s = subPattern;
64
65 // we don't need to count '*' character itself
66 int subLength = s.length() - 1;
67 // simple /*/ pattern
68 if (subLength == 0)
69 return true;
70
71 if (subLength > (endExcl - startIncl))
72 return false;
73
74 for (int i = subLength, j = endExcl - 1; i > 0; i--, j--) {
75 char c1 = s.charAt(i);
76 char c2 = segment.charAt(j);
77 if (c1 != c2)
78 return false;
79 }
80 return true;
81 }
82
83 }