common-app-api/src/main/java/org/openecomp/sdc/common/util/ZipUtil.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.sdc.common.util;
  22
  23 import org.apache.commons.io.IOUtils;
  24 import org.apache.commons.io.output.ByteArrayOutputStream;
  25 import org.openecomp.sdc.common.log.wrappers.Logger;
  26
  27 import java.io.*;
  28 import java.nio.file.Files;
  29 import java.nio.file.Path;
  30 import java.nio.file.Paths;
  31 import java.util.HashMap;
  32 import java.util.Map;
  33 import java.util.zip.ZipEntry;
  34 import java.util.zip.ZipInputStream;
  35 import java.util.zip.ZipOutputStream;
  36
  37 public class ZipUtil {
  38
  39         private static Logger log = Logger.getLogger(ZipUtil.class.getName());
  40
  41         private ZipUtil() {
  42         }
  43
  44         public static Map<String, byte[]> readZip(File file) {
  45         try(InputStream fileInputStream = new FileInputStream(file)){
  46                 return readZip(IOUtils.toByteArray(fileInputStream));
  47         } catch (IOException e) {
  48             log.info("close File stream failed - {}" , e);
  49             return null;
  50         }
  51     }
  52
  53         public static Map<String, byte[]> readZip(byte[] zipAsBytes) {
  54                 Map<String, byte[]> fileNameToByteArray = new HashMap<>();
  55                 byte[] buffer = new byte[1024];
  56         try(ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(zipAsBytes);
  57                         ZipInputStream zis = new ZipInputStream(byteArrayInputStream)) {
  58                         // get the zipped file list entry
  59                         ZipEntry ze = zis.getNextEntry();
  60
  61                         while (ze != null) {
  62
  63                                 String fileName = ze.getName();
  64
  65                                 if (!ze.isDirectory()) {
  66
  67                                         try(ByteArrayOutputStream os = new ByteArrayOutputStream()) {
  68                                                 int len;
  69                                                 while ((len = zis.read(buffer)) > 0) {
  70                                                         os.write(buffer, 0, len);
  71                                                 }
  72
  73                                                 fileNameToByteArray.put(fileName, os.toByteArray());
  74
  75                                         }
  76                                 }
  77                                 ze = zis.getNextEntry();
  78                         }
  79                 } catch (IOException ex) {
  80                         log.info("close Byte stream failed" , ex);
  81                         return null;
  82                 }
  83
  84                 return fileNameToByteArray;
  85
  86         }
  87
  88         public static void main(String[] args) {
  89
  90                 String zipFileName = "/src/test/resources/config/config.zip";
  91
  92                 zipFileName = "C:\\Git_work\\D2-SDnC\\catalog-be\\src\\test\\resources\\config\\config.zip";
  93
  94                 Path path = Paths.get(zipFileName);
  95
  96                 try {
  97                         byte[] zipAsBytes = Files.readAllBytes(path);
  98                         // encode to base
  99
 100                         ZipUtil.readZip(zipAsBytes);
 101
 102                 } catch (IOException e) {
 103                         log.info("close Byte stream failed" , e);
 104                 }
 105
 106         }
 107
 108         public static byte[] zipBytes(byte[] input) throws IOException {
 109                 try(ByteArrayOutputStream baos = new ByteArrayOutputStream();
 110                                 ZipOutputStream zos = new ZipOutputStream(baos)){
 111                         ZipEntry entry = new ZipEntry("zip");
 112                         entry.setSize(input.length);
 113                         zos.putNextEntry(entry);
 114                         zos.write(input);
 115                         zos.closeEntry();
 116                         return baos.toByteArray();
 117                 }
 118         }
 119
 120         public static byte[] unzip(byte[] zipped) {
 121                 try(ZipInputStream zipinputstream = new ZipInputStream(new ByteArrayInputStream(zipped));
 122                                 ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
 123                         byte[] buf = new byte[1024];
 124                         ZipEntry zipentry = zipinputstream.getNextEntry();
 125                         int n;
 126                         while ((n = zipinputstream.read(buf, 0, 1024)) > -1) {
 127                                 outputStream.write(buf, 0, n);
 128                         }
 129                         return outputStream.toByteArray();
 130                 } catch (Exception e) {
 131                         throw new IllegalStateException("Can't unzip input stream", e);
 132                 }
 133         }
 134
 135 }