/*
* 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.ftpserver.listing;
import org.apache.ftpserver.ftplet.FileObject;
import org.apache.ftpserver.util.RegularExpr;
/**
* Selects files which short name matches a regular expression
*/
public class RegexFileFilter implements FileFilter {
private RegularExpr regex;
private FileFilter wrappedFilter;
/**
* Constructor with a regular expression
* @param regex The regular expression to select by
*/
public RegexFileFilter(String regex) {
this.regex = new RegularExpr(regex);
}
/**
* Constructor with a wrapped filter, allows for chaining filters
* @param regex The regular expression to select by
* @param wrappedFilter The {@link FileFilter} to wrap
*/
public RegexFileFilter(String regex, FileFilter wrappedFilter) {
this(regex);
this.wrappedFilter = wrappedFilter;
}
/**
* @see FileFilter#accept(FileObject)
*/
public boolean accept(FileObject file) {
if(wrappedFilter != null && !wrappedFilter.accept(file)) {
return false;
}
return regex.isMatch(file.getShortName());
}
}