| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| package org.apache.ivy.plugins.matcher; |
| |
| import java.util.regex.PatternSyntaxException; |
| |
| import org.apache.oro.text.GlobCompiler; |
| import org.apache.oro.text.regex.MalformedPatternException; |
| import org.apache.oro.text.regex.Pattern; |
| import org.apache.oro.text.regex.Perl5Matcher; |
| |
| /** |
| * A pattern matcher matching input using unix-like glob matcher expressions. Meta characters are: |
| * <ul> |
| * <li>* - Matches zero or more characters</li> |
| * <li>? - Matches exactly one character.</li> |
| * </ul> |
| * <p/> |
| * <b> Note that this matcher is available only with <a href="http://jakarta.apache.org/oro"Apache |
| * Jakarta Oro 2.0.8</a> in your classpath.</b> |
| * |
| * @see <a |
| * href="http://jakarta.apache.org/oro/api/org/apache/oro/text/GlobCompiler.html">GlobCompiler</a> |
| */ |
| public/* @Immutable */final class GlobPatternMatcher extends AbstractPatternMatcher { |
| |
| public static final GlobPatternMatcher INSTANCE = new GlobPatternMatcher(); |
| |
| /* |
| * NOTE: GlobCompiler does ~100K compilation/s - If necessary look into using ThreadLocal for |
| * GlobCompiler/Perl5Matcher to cut on useless object creation - If expression are reused over |
| * and over a LRU cache could make sense |
| */ |
| |
| public GlobPatternMatcher() { |
| super(GLOB); |
| } |
| |
| @Override |
| protected Matcher newMatcher(String expression) { |
| return new GlobMatcher(expression); |
| } |
| |
| private static class GlobMatcher implements Matcher { |
| private Pattern pattern; |
| |
| private String expression; |
| |
| private Boolean exact; |
| |
| public GlobMatcher(String expression) throws PatternSyntaxException { |
| this.expression = expression; |
| try { |
| pattern = new GlobCompiler().compile(expression); |
| } catch (MalformedPatternException e) { |
| throw new PatternSyntaxException(e.getMessage(), expression, 0); |
| } |
| } |
| |
| public boolean matches(String input) { |
| if (input == null) { |
| throw new NullPointerException(); |
| } |
| return new Perl5Matcher().matches(input, pattern); |
| } |
| |
| public boolean isExact() { |
| if (exact == null) { |
| exact = calculateExact(); |
| } |
| return exact.booleanValue(); |
| } |
| |
| private Boolean calculateExact() { |
| Boolean result = Boolean.TRUE; |
| |
| char[] expressionChars = expression.toCharArray(); |
| for (int i = 0; i < expressionChars.length; i++) { |
| char ch = expressionChars[i]; |
| if (ch == '*' || ch == '?' || ch == '[' || ch == ']') { |
| result = Boolean.FALSE; |
| break; |
| } |
| } |
| |
| return result; |
| } |
| } |
| |
| } |