#829 Integrates JMBE Creator with new user preferences editor for auto-downloading and compiling the JMBE library from within sdrtrunk. (#844)

Co-authored-by: Denny <denny@denny-desktop>

src/main/java/io/github/dsheirer/util/ZipUtility.java

@@ -0,0 +1,158 @@
+package io.github.dsheirer.util;
+
+import org.rauschig.jarchivelib.ArchiveFormat;
+import org.rauschig.jarchivelib.Archiver;
+import org.rauschig.jarchivelib.ArchiverFactory;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+/**
+ * This utility compresses a list of files to standard ZIP format file.
+ * It is able to compress all sub files and sub directories, recursively.
+ *
+ * @author www.codejava.net
+ */
+public class ZipUtility
+{
+    /**
+     * A constants for buffer size used to read/write data
+     */
+    private static final int BUFFER_SIZE = 4096;
+
+    /**
+     * Compresses a list of files to a destination zip file
+     *
+     * @param listFiles A collection of files and directories
+     * @param destZipFile The path of the destination zip file
+     * @throws FileNotFoundException
+     * @throws IOException
+     */
+    public void zip(List<File> listFiles, String destZipFile) throws FileNotFoundException,
+        IOException
+    {
+        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(destZipFile));
+        for(File file : listFiles)
+        {
+            if(file.isDirectory())
+            {
+                zipDirectory(file, file.getName(), zos);
+            }
+            else
+            {
+                zipFile(file, zos);
+            }
+        }
+        zos.flush();
+        zos.close();
+    }
+
+    /**
+     * Compresses files represented in an array of paths
+     *
+     * @param files a String array containing file paths
+     * @param destZipFile The path of the destination zip file
+     * @throws FileNotFoundException
+     * @throws IOException
+     */
+    public void zip(String[] files, String destZipFile) throws FileNotFoundException, IOException
+    {
+        List<File> listFiles = new ArrayList<File>();
+
+        for(int i = 0; i < files.length; i++)
+        {
+            listFiles.add(new File(files[i]));
+        }
+
+        zip(listFiles, destZipFile);
+    }
+
+    /**
+     * Adds a directory to the current zip output stream
+     *
+     * @param folder the directory to be  added
+     * @param parentFolder the path of parent directory
+     * @param zos the current zip output stream
+     * @throws FileNotFoundException
+     * @throws IOException
+     */
+    private void zipDirectory(File folder, String parentFolder, ZipOutputStream zos) throws
+        FileNotFoundException, IOException
+    {
+        if(folder == null || folder.listFiles() == null)
+        {
+            return;
+        }
+
+        for(File file : folder.listFiles())
+        {
+            if(file.exists())
+            {
+                if(file.isDirectory())
+                {
+                    zipDirectory(file, parentFolder + "/" + file.getName(), zos);
+                    continue;
+                }
+
+                zos.putNextEntry(new ZipEntry(parentFolder + "/" + file.getName()));
+                BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
+                long bytesRead = 0;
+                byte[] bytesIn = new byte[BUFFER_SIZE];
+                int read = 0;
+                while((read = bis.read(bytesIn)) != -1)
+                {
+                    zos.write(bytesIn, 0, read);
+                    bytesRead += read;
+                }
+                zos.closeEntry();
+            }
+        }
+    }
+
+    /**
+     * Adds a file to the current zip output stream
+     *
+     * @param file the file to be added
+     * @param zos the current zip output stream
+     * @throws FileNotFoundException
+     * @throws IOException
+     */
+    private void zipFile(File file, ZipOutputStream zos) throws FileNotFoundException, IOException
+    {
+        zos.putNextEntry(new ZipEntry(file.getName()));
+        BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
+        long bytesRead = 0;
+        byte[] bytesIn = new byte[BUFFER_SIZE];
+        int read = 0;
+        while((read = bis.read(bytesIn)) != -1)
+        {
+            zos.write(bytesIn, 0, read);
+            bytesRead += read;
+        }
+        zos.closeEntry();
+    }
+
+    /**
+     * Unzips the specified file into the directory where it's located
+     *
+     * @param zipFile to unzip
+     * @return path to where the file was unzipped.
+     * @throws IOException if there are errors unzipping
+     */
+    public static Path unzip(Path zipFile) throws IOException
+    {
+        Path parent = zipFile.getParent();
+        Archiver archiver = ArchiverFactory.createArchiver(ArchiveFormat.ZIP);
+        archiver.extract(zipFile.toFile(), parent.toFile());
+        return parent;
+    }
+}