/*
* RHQ Management Platform
* Copyright (C) 2005-2010 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.helpers.perftest.support.output;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
* Represents a CSV output compressed to a zip file.
*
* @author Lukas Krejci
*/
public class ZippedCsvOutput extends CsvOutput {
private File targetFile;
/**
* @param file the target zip file
* @throws IOException
*/
public ZippedCsvOutput(File file) throws IOException {
super(createTempDirectory());
targetFile = file;
}
public void close() throws IOException {
super.close();
ZipOutputStream stream = null;
try {
stream = new ZipOutputStream(new FileOutputStream(targetFile));
zipFileOrDir(super.getDirectory(), stream);
} finally {
if (stream != null) {
stream.close();
}
delete(super.getDirectory());
}
}
private static File createTempDirectory() throws IOException {
File tmpFile = File.createTempFile("perftest-support-csv-output", null);
tmpFile.delete();
tmpFile.mkdir();
return tmpFile;
}
private static void zipFileOrDir(File f, ZipOutputStream zipFile) throws IOException {
if (f.isDirectory()) {
for (File child : f.listFiles()) {
zipFileOrDir(child, zipFile);
}
} else {
FileInputStream fis = null;
try {
fis = new FileInputStream(f);
ZipEntry zipEntry = new ZipEntry(f.getPath());
zipFile.putNextEntry(zipEntry);
copy(fis, zipFile);
} finally {
if (fis != null) {
fis.close();
}
}
}
}
private static void copy(InputStream input, OutputStream output) throws IOException {
long numBytesCopied = 0;
int bufferSize = 32768;
input = new BufferedInputStream(input, bufferSize);
byte[] buffer = new byte[bufferSize];
for (int bytesRead = input.read(buffer); bytesRead != -1; bytesRead = input.read(buffer)) {
output.write(buffer, 0, bytesRead);
numBytesCopied += bytesRead;
}
output.flush();
}
private static void delete(File f) {
if (f.isDirectory()) {
for (File child : f.listFiles()) {
delete(child);
}
f.delete();
} else {
f.delete();
}
}
}