1 files changed, 102 insertions, 0 deletions
diff --git a/ecomp-portal-widget-ms/src/main/java/org/openecomp/portalapp/widget/utils/UnzipUtil.java b/ecomp-portal-widget-ms/src/main/java/org/openecomp/portalapp/widget/utils/UnzipUtil.java
new file mode 100644
index 00000000..efbfe437
--- /dev/null
+++ b/ecomp-portal-widget-ms/src/main/java/org/openecomp/portalapp/widget/utils/UnzipUtil.java
@@ -0,0 +1,102 @@
+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();
+    }
+}
+\ No newline at end of file