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/*******************************************************************************
* Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.agent.rt.internal;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.jacoco.core.internal.data.CRC64;
/**
* Internal dumper for class files.
*/
class ClassFileDumper {
private final File location;
/**
* Create a new dumper for the given location.
*
* @param location
* relative path to dump directory. <code>null</code> if no dumps
* should be written
*/
ClassFileDumper(final String location) {
if (location == null) {
this.location = null;
} else {
this.location = new File(location);
}
}
/**
* Dumps the given binary content under the given name if a non-
* <code>null</code> location has been specified.
*
* @param name
* qualified class name in VM notation
* @param contents
* binary contents
* @throws IOException
* in case of problems while dumping the file
*/
void dump(final String name, final byte[] contents) throws IOException {
if (location != null) {
final File outputdir;
final String localname;
final int pkgpos = name.lastIndexOf('/');
if (pkgpos != -1) {
outputdir = new File(location, name.substring(0, pkgpos));
localname = name.substring(pkgpos + 1);
} else {
outputdir = location;
localname = name;
}
outputdir.mkdirs();
final Long id = Long.valueOf(CRC64.classId(contents));
final File file = new File(outputdir,
String.format("%s.%016x.class", localname, id));
final OutputStream out = new FileOutputStream(file);
out.write(contents);
out.close();
}
}
}
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