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/*
* Copyright 2017 Huawei Technologies Co., Ltd.
*
* 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.
*/
package org.openo.vnfsdk.functest.util;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ZipCompressor {
public static final Logger LOG = LoggerFactory.getLogger(ZipCompressor.class);
static final int BUFFER = 8192;
private File zipFile;
public ZipCompressor(String pathName) {
zipFile = new File(pathName);
}
/**
* compress file according file path.
*
* @param srcPathName file path name
* @throws IOException
*/
public void compress(String srcPathName) throws IOException {
File file = new File(srcPathName);
if(!file.exists()) {
throw new FileNotFoundException(srcPathName + "not exist!");
}
try {
FileOutputStream fileOutputStream = new FileOutputStream(zipFile);
CheckedOutputStream cos = new CheckedOutputStream(fileOutputStream, new CRC32());
ZipOutputStream out = new ZipOutputStream(cos);
String basedir = "";
compress(file, out, basedir);
out.close();
} catch(Exception e1) {
throw new IOException(e1);
}
}
private void compress(File file, ZipOutputStream out, String basedir) {
if(file.isDirectory()) {
LOG.info("compress: " + basedir + file.getName());
this.compressDirectory(file, out, basedir);
} else {
LOG.info("compress: " + basedir + file.getName());
this.compressFile(file, out, basedir);
}
}
private void compressDirectory(File dir, ZipOutputStream out, String basedir) {
if(!dir.exists()) {
return;
}
File[] files = dir.listFiles();
for(int i = 0; i < files.length; i++) {
compress(files[i], out, basedir + dir.getName() + "/");
}
}
private void compressFile(File file, ZipOutputStream out, String basedir) {
if(!file.exists()) {
return;
}
try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file))) {
byte[] data = new byte[BUFFER];
ZipEntry entry = new ZipEntry(basedir + file.getName());
out.putNextEntry(entry);
int count;
while((count = bis.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
bis.close();
} catch(IOException e) {
LOG.info("Exception wile compress file" + file.getAbsolutePath(), e);
}
}
}
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