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/*
* Copyright (C) 2012 Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.archive;
import static java.nio.charset.StandardCharsets.UTF_8;
import java.io.IOException;
import java.io.OutputStream;
import java.text.MessageFormat;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.apache.commons.compress.archivers.ArchiveOutputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.archivers.tar.TarConstants;
import org.eclipse.jgit.api.ArchiveCommand;
import org.eclipse.jgit.archive.internal.ArchiveText;
import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectLoader;
import org.eclipse.jgit.revwalk.RevCommit;
/**
* Unix TAR format (ustar + some PAX extensions).
*/
public final class TarFormat extends BaseFormat implements
ArchiveCommand.Format<ArchiveOutputStream> {
private static final List<String> SUFFIXES = Collections
.unmodifiableList(Arrays.asList(".tar")); //$NON-NLS-1$
/** {@inheritDoc} */
@Override
public ArchiveOutputStream createArchiveOutputStream(OutputStream s)
throws IOException {
return createArchiveOutputStream(s,
Collections.<String, Object> emptyMap());
}
/** {@inheritDoc} */
@Override
public ArchiveOutputStream createArchiveOutputStream(OutputStream s,
Map<String, Object> o) throws IOException {
TarArchiveOutputStream out = new TarArchiveOutputStream(s,
UTF_8.name());
out.setLongFileMode(TarArchiveOutputStream.LONGFILE_POSIX);
out.setBigNumberMode(TarArchiveOutputStream.BIGNUMBER_POSIX);
return applyFormatOptions(out, o);
}
/** {@inheritDoc} */
@Override
public void putEntry(ArchiveOutputStream out,
ObjectId tree, String path, FileMode mode, ObjectLoader loader)
throws IOException {
if (mode == FileMode.SYMLINK) {
final TarArchiveEntry entry = new TarArchiveEntry(
path, TarConstants.LF_SYMLINK);
entry.setLinkName(new String(loader.getCachedBytes(100), UTF_8));
out.putArchiveEntry(entry);
out.closeArchiveEntry();
return;
}
// TarArchiveEntry detects directories by checking
// for '/' at the end of the filename.
if (path.endsWith("/") && mode != FileMode.TREE) //$NON-NLS-1$
throw new IllegalArgumentException(MessageFormat.format(
ArchiveText.get().pathDoesNotMatchMode, path, mode));
if (!path.endsWith("/") && mode == FileMode.TREE) //$NON-NLS-1$
path = path + "/"; //$NON-NLS-1$
final TarArchiveEntry entry = new TarArchiveEntry(path);
if (tree instanceof RevCommit) {
long t = ((RevCommit) tree).getCommitTime() * 1000L;
entry.setModTime(t);
}
if (mode == FileMode.TREE) {
out.putArchiveEntry(entry);
out.closeArchiveEntry();
return;
}
if (mode == FileMode.REGULAR_FILE) {
// ok
} else if (mode == FileMode.EXECUTABLE_FILE) {
entry.setMode(mode.getBits());
} else {
// Unsupported mode (e.g., GITLINK).
throw new IllegalArgumentException(MessageFormat.format(
ArchiveText.get().unsupportedMode, mode));
}
entry.setSize(loader.getSize());
out.putArchiveEntry(entry);
loader.copyTo(out);
out.closeArchiveEntry();
}
/** {@inheritDoc} */
@Override
public Iterable<String> suffixes() {
return SUFFIXES;
}
/** {@inheritDoc} */
@Override
public boolean equals(Object other) {
return (other instanceof TarFormat);
}
/** {@inheritDoc} */
@Override
public int hashCode() {
return getClass().hashCode();
}
}
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