001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.component.file;
018    
019    import java.io.File;
020    import java.io.FileFilter;
021    
022    import org.apache.camel.util.AntPathMatcher;
023    import org.slf4j.Logger;
024    import org.slf4j.LoggerFactory;
025    
026    /**
027     * File filter using {@link AntPathMatcher}.
028     * <p/>
029     * Exclude take precedence over includes. If a file match both exclude and include it will be regarded as excluded.
030     */
031    public class AntPathMatcherFileFilter implements FileFilter {
032        private static final transient Logger LOG = LoggerFactory.getLogger(AntPathMatcherFileFilter.class);
033    
034        private AntPathMatcher matcher = new AntPathMatcher();
035        private String[] excludes;
036        private String[] includes;
037    
038        public boolean accept(File pathname) {
039            return acceptPathName(pathname.getPath());
040        }
041    
042        /**
043         * Accepts the given file by the path name
044         *
045         * @param path the path
046         * @return <tt>true</tt> if accepted, <tt>false</tt> if not
047         */
048        public boolean acceptPathName(String path) {
049            // must use single / as path separators
050            path = path.replace(File.separatorChar, '/');
051    
052            LOG.trace("Filtering file: {}", path);
053    
054            // excludes take precedence
055            if (excludes != null) {
056                for (String exclude : excludes) {
057                    if (matcher.match(exclude, path)) {
058                        // something to exclude so we cant accept it
059                        LOG.trace("File is excluded: {}", path);
060                        return false;
061                    }
062                }
063            }
064    
065            if (includes != null) {
066                for (String include : includes) {
067                    if (matcher.match(include, path)) {
068                        // something to include so we accept it
069                        LOG.trace("File is included: {}", path);
070                        return true;
071                    }
072                }
073            }
074    
075            if (excludes != null && includes == null) {
076                // if the user specified excludes but no includes, presumably we should include by default
077                return true;
078            }
079    
080            // nothing to include so we can't accept it
081            return false;
082        }
083    
084        public String[] getExcludes() {
085            return excludes;
086        }
087    
088        public void setExcludes(String[] excludes) {
089            this.excludes = excludes;
090        }
091    
092        public String[] getIncludes() {
093            return includes;
094        }
095    
096        public void setIncludes(String[] includes) {
097            this.includes = includes;
098        }
099    
100        /**
101         * Sets excludes using a single string where each element can be separated with comma
102         */
103        public void setExcludes(String excludes) {
104            setExcludes(excludes.split(","));
105        }
106    
107        /**
108         * Sets includes using a single string where each element can be separated with comma
109         */
110        public void setIncludes(String includes) {
111            setIncludes(includes.split(","));
112        }
113    
114    }