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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.openecomp.portalapp.widget.service.impl.StorageServiceImpl;
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
* @param destDirectory
* @throws IOException
*/
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<>();
map.put(WidgetConstant.WIDGET_CONTROLLER_LOCATION, null);
map.put(WidgetConstant.WIDGET_MARKUP_LOCATION, null);
map.put(WidgetConstant.WIDGET_STYLE_LOCATION, null);
Stack<File> stack = new Stack<>();
// iterates over entries in the zip file
while (entry != null) {
String filePath = destDirectory + File.separator + widgetName + File.separator +
entry.getName().substring(entry.getName().indexOf("/")+1);
logger.debug("UnzipUtil.unzip_db: file path " + filePath);
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();
}
if(map.containsKey(entry.getName().substring(entry.getName().indexOf("/")+1))){
map.put(entry.getName().substring(entry.getName().indexOf("/")+1), Files.readAllBytes(Paths.get(filePath)));
}
zipIn.closeEntry();
entry = zipIn.getNextEntry();
}
zipIn.close();
while(!stack.isEmpty())
stack.pop().delete();
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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