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* 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.james.mailrepository.filepair;
import java.io.File;
import java.io.FilenameFilter;
/**
* This filters files based on the extension and is tailored to provide
* backwards compatibility of the numbered repositories that Avalon does.
*
*/
public class NumberedRepositoryFileFilter implements FilenameFilter {
private String postfix;
private String prefix;
public NumberedRepositoryFileFilter(final String extension) {
postfix = extension;
prefix = "." + RepositoryManager.getName();
}
public boolean accept(final File file, final String name) {
//System.out.println("check: " + name);
//System.out.println("post: " + postfix);
if (!name.endsWith(postfix)) {
return false;
}
//Look for a couple of digits next
int pos = name.length() - postfix.length();
//We have to find at least one digit... if not then this isn't what we want
if (!Character.isDigit(name.charAt(pos - 1))) {
return false;
}
pos--;
while (pos >= 1 && Character.isDigit(name.charAt(pos - 1))) {
//System.out.println("back one");
pos--;
}
//System.out.println("sub: " + name.substring(0, pos));
//Now want to check that we match the rest
return name.substring(0, pos).endsWith(prefix);
}
}
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