/
Archive.java
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/
Archive.java
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/*
* 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.Collections;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
import edu.umd.cs.findbugs.internalAnnotations.StaticConstant;
/**
* Utility methods for working with zip/jar archives.
*
* @author David Hovemeyer
*/
public class Archive {
/**
* File extensions that indicate an archive (zip, jar, or similar).
*/
@StaticConstant
public static final Set<String> ARCHIVE_EXTENSION_SET;
static {
Set<String> extensions = new HashSet<>();
extensions.add(".jar");
extensions.add(".zip");
extensions.add(".war");
extensions.add(".ear");
extensions.add(".sar");
ARCHIVE_EXTENSION_SET = Collections.unmodifiableSet(extensions);
}
/**
* 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) {
String extension = getExtension(fileName);
return ARCHIVE_EXTENSION_SET.contains(extension);
}
private static String getExtension(String fileName) {
int lastDot = fileName.lastIndexOf('.');
if (lastDot < 0) {
return fileName;
}
String extension = fileName.substring(lastDot).toLowerCase(Locale.ENGLISH);
return extension;
}
@Deprecated
@SuppressWarnings("unused") // unused within the codebase, but deprecated until next release for public API reasons
public static boolean isLibraryFileName(String fileName) {
String extension = getExtension(fileName);
return ".jar".equals(extension);
}
}