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/*
* #%L
* SciJava Common shared library for SciJava software.
* %%
* Copyright (C) 2009 - 2014 Board of Regents of the University of
* Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
* Institute of Molecular Cell Biology and Genetics.
* %%
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
package org.scijava.util;
import java.io.IOException;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.Collections;
import java.util.Map;
import java.util.jar.Attributes;
/**
* Helper class for working with JAR manifests.
*
* @author Curtis Rueden
*/
public class Manifest {
/** The JAR manifest backing this object. */
private final java.util.jar.Manifest manifest;
/** Creates a new instance wrapping the given JAR manifest. */
private Manifest(final java.util.jar.Manifest manifest) {
this.manifest = manifest;
}
// -- Manifest methods --
public String getArchiverVersion() {
return get("Archiver-Version");
}
public String getBuildJdk() {
return get("Build-Jdk");
}
public String getBuiltBy() {
return get("Built-By");
}
public String getCreatedBy() {
return get("Created-By");
}
public String getImplementationBuild() {
return get("Implementation-Build");
}
public String getImplementationDate() {
return get("Implementation-Date");
}
public String getImplementationTitle() {
return get("Implementation-Title");
}
public String getImplementationVendor() {
return get("Implementation-Vendor");
}
public String getImplementationVendorId() {
return get("Implementation-Vendor-Id");
}
public String getImplementationVersion() {
return get("Implementation-Version");
}
public String getManifestVersion() {
return get("Manifest-Version");
}
public String getPackage() {
return get("Package");
}
public String getSpecificationTitle() {
return get("Specification-Title");
}
public String getSpecificationVendor() {
return get("Specification-Vendor");
}
public String getSpecificationVersion() {
return get("Specification-Version");
}
public String get(final String key) {
if (manifest == null) return null;
final Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) return null;
return mainAttrs.getValue(key);
}
public Map<Object, Object> getAll() {
if (manifest == null) return null;
final Attributes mainAttrs = manifest.getMainAttributes();
if (mainAttrs == null) return null;
return Collections.unmodifiableMap(mainAttrs);
}
// -- Utility methods --
/** Gets the JAR manifest associated with the given class. */
public static Manifest getManifest(final Class<?> c) {
try {
// try to grab manifest from the JAR
final URL location = new URL("jar:" + ClassUtils.getLocation(c) + "!/");
return new Manifest(((JarURLConnection)location.openConnection()).getManifest());
}
catch (final IOException e) {
return null;
}
}
}