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/*-
* ============LICENSE_START==========================================
* ONAP Portal
* ===================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ===================================================================
*
* Unless otherwise specified, all software contained herein is licensed
* under the Apache License, Version 2.0 (the “License”);
* you may not use this software 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.
*
* Unless otherwise specified, all documentation contained herein is licensed
* under the Creative Commons License, Attribution 4.0 Intl. (the “License”);
* you may not use this documentation except in compliance with the License.
* You may obtain a copy of the License at
*
* https://creativecommons.org/licenses/by/4.0/
*
* Unless required by applicable law or agreed to in writing, documentation
* 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.
*
* ============LICENSE_END============================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*/
package org.openecomp.portalapp.widget.utils;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;
import java.util.Stack;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import org.openecomp.portalapp.widget.constant.WidgetConstant;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class UnzipUtil {
/**
* Size of the buffer to read/write data
*/
private static final int BUFFER_SIZE = 4096;
private static final Logger logger = LoggerFactory.getLogger(UnzipUtil.class);
/**
* Extracts a zip file specified by the zipFilePath to a directory specified by
* destDirectory (will be created if does not exists)
*
* @param zipFilePath
* path
* @param destDirectory
* directory
* @param widgetName
* name
* @return Map of contents
* @throws IOException
* On error
*/
public Map<String, byte[]> unzip_db(String zipFilePath, String destDirectory, String widgetName)
throws IOException {
logger.debug("UnzipUtil.unzip_db: unzip widget file {}", widgetName);
File destDir = new File(destDirectory);
if (!destDir.exists())
destDir.mkdir();
ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));
ZipEntry entry = zipIn.getNextEntry();
Map<String, byte[]> map = new HashMap<>();
String[] requiredKeys = { WidgetConstant.WIDGET_CONTROLLER_LOCATION, WidgetConstant.WIDGET_MARKUP_LOCATION,
WidgetConstant.WIDGET_STYLE_LOCATION };
for (String k : requiredKeys)
map.put(k, null);
// iterates over entries in the zip file
Stack<File> stack = new Stack<>();
while (entry != null) {
String filePath = destDirectory + File.separator + widgetName + File.separator
+ entry.getName().substring(entry.getName().indexOf("/") + 1);
final String entryShortName = entry.getName().substring(entry.getName().indexOf("/") + 1);
logger.debug("UnzipUtil.unzip_db: file path {}, short name {}", filePath, entryShortName);
if (!entry.isDirectory()) {
// if the entry is a file, extracts it
logger.debug("UnzipUtil.unzip_db: unzip and save widget file {}", filePath);
stack.push(new File(filePath));
extractFile(zipIn, filePath);
} else {
// if the entry is a directory, make the directory
logger.debug("UnzipUtil.unzip_db: unzip and create widget folder {}", filePath);
File dir = new File(filePath);
stack.push(new File(filePath));
dir.mkdir();
}
// Is this one we need?
if (map.containsKey(entryShortName))
map.put(entryShortName, Files.readAllBytes(Paths.get(filePath)));
zipIn.closeEntry();
entry = zipIn.getNextEntry();
}
zipIn.close();
while (!stack.isEmpty())
stack.pop().delete();
for (String k : requiredKeys)
if (!map.containsKey(k))
logger.warn("UnzipUtil.unzip_db: no zip archive entry found for required key {}", k);
return map;
}
/**
* Extracts a zip entry (file entry)
*
* @param zipIn
* @param filePath
* @throws IOException
*/
private void extractFile(ZipInputStream zipIn, String filePath) throws IOException {
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath));
byte[] bytesIn = new byte[BUFFER_SIZE];
int read = 0;
while ((read = zipIn.read(bytesIn)) != -1) {
bos.write(bytesIn, 0, read);
}
bos.close();
}
}
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