/*
* The MIT License
*
* Copyright (c) 2010, InfraDNA, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package hudson.util.io;
import hudson.Functions;
import hudson.os.PosixException;
import hudson.util.FileVisitor;
import hudson.util.IOUtils;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
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.apache.commons.compress.utils.BoundedInputStream;
/**
* {@link FileVisitor} that creates a tar archive.
*
* @see ArchiverFactory#TAR
*/
final class TarArchiver extends Archiver {
private final byte[] buf = new byte[8192];
private final TarArchiveOutputStream tar;
TarArchiver(OutputStream out) {
tar = new TarArchiveOutputStream(out);
tar.setBigNumberMode(TarArchiveOutputStream.BIGNUMBER_STAR);
tar.setLongFileMode(TarArchiveOutputStream.LONGFILE_GNU);
}
@Override
public void visitSymlink(File link, String target, String relativePath) throws IOException {
TarArchiveEntry e = new TarArchiveEntry(relativePath, TarConstants.LF_SYMLINK);
try {
int mode = IOUtils.mode(link);
if (mode != -1) {
e.setMode(mode);
}
} catch (PosixException x) {
// ignore
}
e.setLinkName(target);
tar.putArchiveEntry(e);
tar.closeArchiveEntry();
entriesWritten++;
}
@Override
public boolean understandsSymlink() {
return true;
}
public void visit(File file, String relativePath) throws IOException {
if(Functions.isWindows())
relativePath = relativePath.replace('\\','/');
if(file.isDirectory())
relativePath+='/';
TarArchiveEntry te = new TarArchiveEntry(relativePath);
int mode = IOUtils.mode(file);
if (mode!=-1) te.setMode(mode);
te.setModTime(file.lastModified());
long size = 0;
if (!file.isDirectory()) {
size = file.length();
te.setSize(size);
}
tar.putArchiveEntry(te);
try {
if (!file.isDirectory()) {
// ensure we don't write more bytes than the declared when we created the entry
try (FileInputStream fin = new FileInputStream(file);
BoundedInputStream in = new BoundedInputStream(fin, size)) {
int len;
while ((len = in.read(buf)) >= 0) {
tar.write(buf, 0, len);
}
} catch (IOException e) {// log the exception in any case
IOException ioE = new IOException("Error writing to tar file from: " + file, e);
throw ioE;
}
}
} finally { // always close the entry
tar.closeArchiveEntry();
}
entriesWritten++;
}
public void close() throws IOException {
tar.close();
}
}