--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/utils/FileUtils.java	Fri Sep 28 12:13:53 2012 +0200
@@ -0,0 +1,129 @@
+package de.intevation.gnv.utils;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import java.util.Stack;
+
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+/**
+ * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
+ */
+public final class FileUtils
+{
+    private FileUtils() {
+    }
+
+    public final static boolean deleteRecursive(File file) {
+
+        if (file == null) {
+            return false;
+        }
+
+        if (file.isDirectory()) {
+            File [] files = file.listFiles();
+            if (files != null) {
+                for (File sub: files) {
+                    if (!deleteRecursive(sub)) {
+                        return false;
+                    }
+                }
+            }
+        }
+
+        return file.delete();
+    }
+
+    public static void createZipArchive(
+        File         file,
+        OutputStream outputStream
+    )
+    throws IOException
+    {
+        ZipOutputStream out = new ZipOutputStream(outputStream);
+
+        if (file.isFile()) {
+            copyFileToZip("", file, out);
+        }
+        else if (file.isDirectory()) {
+
+            Stack<PrefixDir> stack = new Stack<PrefixDir>();
+            stack.push(new PrefixDir(file.getName() + "/", file));
+
+            while (!stack.isEmpty()) {
+                PrefixDir pd = stack.pop();
+
+                ZipEntry dirEntry = new ZipEntry(pd.prefix);
+                out.putNextEntry(dirEntry);
+                out.closeEntry();
+
+                File [] files = pd.dir.listFiles();
+                if (files != null) {
+                    for (File sub: files) {
+                        if (sub.isDirectory()) {
+                            stack.push(new PrefixDir(
+                                pd.prefix + sub.getName() + "/",
+                                sub));
+                        }
+                        else if (sub.isFile()) {
+                            copyFileToZip(pd.prefix, sub, out);
+                        }
+                    }
+                }
+            }
+        }
+
+        out.finish();
+    }
+
+    private static final class PrefixDir {
+
+        String prefix;
+        File   dir;
+
+        public PrefixDir(String prefix, File dir) {
+            this.prefix = prefix;
+            this.dir    = dir;
+        }
+
+    } // class PrefixDir
+
+    private static void copyFileToZip(
+        String          prefix,
+        File            file,
+        ZipOutputStream out
+    )
+    throws IOException
+    {
+        String   entryName = prefix + file.getName();
+        ZipEntry entry     = new ZipEntry(entryName);
+        out.putNextEntry(entry);
+        InputStream in = null;
+        try {
+            in =
+                new BufferedInputStream(
+                new FileInputStream(file), 20*1024);
+
+            byte [] buf = new byte[2048];
+
+            int r;
+            while ((r = in.read(buf)) > 0) {
+                out.write(buf, 0, r);
+            }
+        }
+        finally {
+            if (in != null) {
+                try { in.close(); }
+                catch (IOException ioe) {}
+            }
+        }
+        out.closeEntry();
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :