| /** |
| * 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.hadoop.fs; |
| |
| import java.util.regex.PatternSyntaxException; |
| import java.io.IOException; |
| |
| // A class that could decide if a string matches the glob or not |
| class GlobFilter implements PathFilter { |
| private final static PathFilter DEFAULT_FILTER = new PathFilter() { |
| public boolean accept(Path file) { |
| return true; |
| } |
| }; |
| |
| private PathFilter userFilter = DEFAULT_FILTER; |
| private GlobPattern pattern; |
| |
| GlobFilter(String filePattern) throws IOException { |
| init(filePattern, DEFAULT_FILTER); |
| } |
| |
| GlobFilter(String filePattern, PathFilter filter) throws IOException { |
| init(filePattern, filter); |
| } |
| |
| void init(String filePattern, PathFilter filter) throws IOException { |
| try { |
| userFilter = filter; |
| pattern = new GlobPattern(filePattern); |
| } |
| catch (PatternSyntaxException e) { |
| // Existing code expects IOException startWith("Illegal file pattern") |
| throw new IOException("Illegal file pattern: "+ e.getMessage(), e); |
| } |
| } |
| |
| boolean hasPattern() { |
| return pattern.hasWildcard(); |
| } |
| |
| public boolean accept(Path path) { |
| return pattern.matches(path.getName()) && userFilter.accept(path); |
| } |
| } |