# HG changeset patch
# User Ingo Weinzierl <ingo.weinzierl@intevation.de>
# Date 1326105883 0
# Node ID 0723859f776f8c93377c089cb1fb48af51e59bd1
# Parent  4d3298295a6433738eece3a6d1b9379b600401df
Added new FileTools functions to copy files and directories.

artifacts/trunk@3627 c6561f87-3c4e-4783-a992-168aeb5c3f6f

diff -r 4d3298295a64 -r 0723859f776f ChangeLog
--- a/ChangeLog	Mon Jan 09 08:15:35 2012 +0000
+++ b/ChangeLog	Mon Jan 09 10:44:43 2012 +0000
@@ -1,3 +1,9 @@
+2012-01-09  Ingo Weinzierl <ingo@intevation.de>
+
+	* artifacts-common/src/main/java/de/intevation/artifacts/common/utils/FileTools.java:
+	  Added new functions to copy files (copyFile()) and to copy directories
+	  (copyDirectory()).
+
 2012-01-09  Ingo Weinzierl <ingo@intevation.de>
 
 	* artifact-database/src/main/java/de/intevation/artifactdatabase/state/State.java,
diff -r 4d3298295a64 -r 0723859f776f artifacts-common/src/main/java/de/intevation/artifacts/common/utils/FileTools.java
--- a/artifacts-common/src/main/java/de/intevation/artifacts/common/utils/FileTools.java	Mon Jan 09 08:15:35 2012 +0000
+++ b/artifacts-common/src/main/java/de/intevation/artifacts/common/utils/FileTools.java	Mon Jan 09 10:44:43 2012 +0000
@@ -12,7 +12,9 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.OutputStream;
+import java.nio.channels.FileChannel;
 
 import java.util.Stack;
 import java.util.List;
@@ -399,5 +401,134 @@
         }
         out.closeEntry();
     }
+
+
+    /**
+     * Copies a <i>src</i> file to <i>target</i>.
+     *
+     * @param src A file (not a directory) that should be copied.
+     * @param target The destination. This might be a file or a directory.
+     *
+     * @return true, if <i>src</i> has been successfully copied; otherwise
+     * false.
+     */
+    public static boolean copyFile(File src, File target)
+    throws IOException
+    {
+        if (src == null || !src.exists()) {
+            log.warn("Source file does not exist!");
+            return false;
+        }
+
+        if (!src.canRead()) {
+            log.warn("Cannot read Source file!");
+            return false;
+        }
+
+        if (src.isDirectory()) {
+            log.warn("Source is a directory!");
+            return false;
+        }
+
+        if (target.isDirectory()) {
+            target = new File(target, src.getName());
+        }
+
+        FileInputStream  in  = null;
+        FileOutputStream out = null;
+
+        try {
+            in  = new FileInputStream(src);
+            out = new FileOutputStream(target);
+
+            FileChannel inChannel  = in.getChannel();
+            FileChannel outChannel = out.getChannel();
+
+            inChannel.transferTo(0l, inChannel.size(), outChannel);
+
+            return true;
+        }
+        catch (IOException ioe) {
+            log.warn(ioe, ioe);
+        }
+        finally {
+            if (in != null) {
+                try {
+                    in.close();
+                }
+                catch (IOException ioe) { /* do nothing here */ }
+            }
+
+            if (out != null) {
+                try {
+                    out.close();
+                }
+                catch (IOException ioe) { /* do nothing here */ }
+            }
+        }
+
+        return false;
+    }
+
+
+    /**
+     * Copies a directory <i>source</i> to a destination path <i>dest</i>.
+     *
+     * @param source A directory that should be copied.
+     * @param dest A destination directory which is created if it is not
+     * existing yet.
+     *
+     * @return true, if the directory has been successfully copied; otherwise
+     * false.
+     */
+    public static boolean copyDirectory(final File source, final File dest) {
+        if (source == null || !source.exists()) {
+            log.warn("Source directory does not exist!");
+            return false;
+        }
+
+        if (!source.isDirectory()) {
+            log.warn("Source is not a directory!");
+            return false;
+        }
+
+        if (dest == null) {
+            log.warn("Destination directory is null!");
+            return false;
+        }
+
+        if (!dest.exists()) {
+            if (!dest.mkdir()) {
+                log.warn("Cannot create destination directory!");
+                return false;
+            }
+        }
+
+        File[] children = source.listFiles();
+        int    failed   = 0;
+
+        if (children != null && children.length > 0) {
+            for (File child: children) {
+                if (child.isFile()) {
+                    try {
+                        if (!copyFile(child, dest)) {
+                            failed++;
+                        }
+                    }
+                    catch (IOException ioe) {
+                        log.warn(ioe, ioe);
+                        failed++;
+                    }
+                }
+                else if (child.isDirectory()) {
+                    copyDirectory(child, new File(dest, child.getName()));
+                }
+            }
+        }
+
+        log.debug("Failed to copy " + failed + " files.");
+
+        return true;
+    }
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :