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/*
* Copyright 2004 Outerthought bvba and Schaubroeck nv
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// revised from outerj daisy
import java.io.*;
import java.util.zip.ZipOutputStream;
import java.util.zip.ZipEntry;
public class ZipHelper {
private static int BUFFER_SIZE = 32768;
public static void fileToZip(File file, File zipFile, int compressionLevel) throws Exception {
zipFile.createNewFile();
FileOutputStream fout = new FileOutputStream(zipFile);
ZipOutputStream zout = null;
try {
zout = new ZipOutputStream(new BufferedOutputStream(fout));
zout.setLevel(compressionLevel);
if (file.isDirectory()) {
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++)
fileToZip(files[i], zout, file);
} else if (file.isFile()) {
fileToZip(file, zout, file.getParentFile());
}
} finally {
if (zout != null)
zout.close();
}
}
private static void fileToZip(File file, ZipOutputStream zout, File baseDir) throws Exception {
String entryName = file.getPath().substring(baseDir.getPath().length() + 1);
if (File.separatorChar != '/')
entryName = entryName.replace(File.separator, "/");
if (file.isDirectory()) {
zout.putNextEntry(new ZipEntry(entryName + "/"));
zout.closeEntry();
File[] files = file.listFiles();
for (int i = 0; i < files.length; i++)
fileToZip(files[i], zout, baseDir);
} else {
FileInputStream is = null;
try {
is = new FileInputStream(file);
zout.putNextEntry(new ZipEntry(entryName));
streamCopy(is, zout);
} finally {
zout.closeEntry();
if (is != null)
is.close();
}
}
}
private static void streamCopy(InputStream is, OutputStream os) throws IOException {
byte[] buffer = new byte[BUFFER_SIZE];
int len;
while ((len = is.read(buffer)) > 0) {
os.write(buffer, 0, len);
}
}
}
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