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/*
* Copyright (C) 2014, Andrey Loskutov <loskutov@gmx.de> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.ignore.internal;
/**
* Matcher for simple regex patterns starting with an asterisk, e.g. "*.tmp"
*/
public class LeadingAsteriskMatcher extends NameMatcher {
LeadingAsteriskMatcher(String pattern, Character pathSeparator, boolean dirOnly) {
super(pattern, pathSeparator, dirOnly, true);
if (subPattern.charAt(0) != '*')
throw new IllegalArgumentException(
"Pattern must have leading asterisk: " + pattern); //$NON-NLS-1$
}
@Override
public boolean matches(String segment, int startIncl, int endExcl) {
// faster local access, same as in string.indexOf()
String s = subPattern;
// we don't need to count '*' character itself
int subLength = s.length() - 1;
// simple /*/ pattern
if (subLength == 0)
return true;
if (subLength > (endExcl - startIncl))
return false;
for (int i = subLength, j = endExcl - 1; i > 0; i--, j--) {
char c1 = s.charAt(i);
char c2 = segment.charAt(j);
if (c1 != c2)
return false;
}
return true;
}
}
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