/*
* FindBugs - Find Bugs in Java programs
* Copyright (C) 2006, University of Maryland
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.umd.cs.findbugs.util;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
/**
* Utility methods for working with zip/jar archives.
*
* @author David Hovemeyer
*/
public class Archive {
/**
* File extensions that indicate an archive (zip, jar, or similar).
*/
static public final Set<String> ARCHIVE_EXTENSION_SET = new HashSet<String>();
static {
ARCHIVE_EXTENSION_SET.add(".jar");
ARCHIVE_EXTENSION_SET.add(".zip");
ARCHIVE_EXTENSION_SET.add(".war");
ARCHIVE_EXTENSION_SET.add(".ear");
ARCHIVE_EXTENSION_SET.add(".sar");
}
/**
* Determine whether or not the given filename appears to
* identify a zip/jar archive.
*
* @param fileName the filename
* @return true if the filename appears to identify an archive,
* false otherwise
*/
public static boolean isArchiveFileName(String fileName) {
int lastDot = fileName.lastIndexOf('.');
if (lastDot < 0) {
return false;
}
String extension = fileName.substring(lastDot).toLowerCase(Locale.ENGLISH);
return ARCHIVE_EXTENSION_SET.contains(extension);
}
}