ems/boco/src/main/java/org/onap/vfc/nfvo/emsdriver/commons/utils/UnZip.java

   1 /**
   2  * Copyright 2017 BOCO Corporation.  CMCC Technologies Co., Ltd
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onap.vfc.nfvo.emsdriver.commons.utils;
  17
  18 import java.io.File;
  19 import java.io.FileOutputStream;
  20 import java.io.IOException;
  21 import java.io.InputStream;
  22 import java.util.Enumeration;
  23
  24 import org.apache.tools.zip.ZipEntry;
  25 import org.apache.tools.zip.ZipFile;
  26
  27
  28 public class UnZip {
  29         protected String deCompressPath = null;
  30         protected String zipFilePath = null;
  31
  32         /**
  33          *
  34          */
  35         public UnZip(String zipFilePath, String toPath) throws IOException {
  36                 File zipFile = new File(
  37                                 new File(zipFilePath).getAbsolutePath());
  38                 if (!zipFile.isFile())
  39                         throw new IOException("not found file '"+zipFilePath+"'");
  40
  41                 this.deCompressPath = toPath;
  42                 this.zipFilePath = zipFile.getAbsolutePath();
  43
  44                 if (deCompressPath == null)
  45                         deCompressPath = zipFile.getParent() + File.separator;
  46
  47                 else if (deCompressPath.charAt(deCompressPath.length()-1) != '/')
  48                         deCompressPath = deCompressPath + File.separator;
  49         }
  50
  51         /**
  52          *
  53          */
  54         public void deCompress() throws IOException {
  55                 ZipFile zipFile = new ZipFile(zipFilePath);
  56                 try{
  57                         Enumeration<ZipEntry> e = zipFile.getEntries();
  58                         for (ZipEntry entry; e.hasMoreElements(); ) {
  59                                 if (!(entry=e.nextElement()).isDirectory()) {
  60                                         String toPath = new StringBuffer(
  61                                                         deCompressPath).append(entry.getName()).toString();
  62                                         toPath = toPath.replace("\\", File.separator);
  63                                         deCompressFile(zipFile.getInputStream(entry), toPath);
  64                                 }
  65                         }
  66                 }catch(IOException e){
  67                         throw e;
  68                 }finally{
  69                         zipFile.close();
  70                 }
  71         }
  72
  73         /**
  74          *
  75          */
  76         protected void deCompressFile(InputStream input, String toPath)
  77                 throws IOException {
  78                 byte byteBuf[] = new byte[2048];
  79                 String path = new File(toPath).getParent();
  80                 if(!new File(path).exists()){
  81                         new File(path).mkdirs();
  82                 }
  83                 FileOutputStream output = new FileOutputStream(toPath, false);
  84                 try{
  85                         for (int count=0; (count=input.read(byteBuf,0,byteBuf.length))!=-1;)
  86                                 output.write(byteBuf, 0, count);
  87                 }catch(IOException e){
  88                         throw e;
  89                 }finally{
  90                         output.close();
  91                         input.close();
  92                 }
  93         }
  94 }