In progress

core/src/main/java/com/kloudtek/util/FileUtils.java

@@ -7,6 +7,47 @@
 import java.util.Set;
 
 public class FileUtils {
+    public static void mkdir(File file) throws IOException {
+        if( ! file.mkdir() ) {
+            throw new IOException("Unable to create directory: "+file.getPath());
+        }
+    }
+
+    public static void mkdirs(File file) throws IOException {
+        if( ! file.mkdirs() ) {
+            throw new IOException("Unable to create directory: "+file.getPath());
+        }
+    }
+
+    public static void copy( File src, File dst ) throws IOException {
+        FileInputStream is = null;
+        FileOutputStream os = null;
+        try {
+            is = new FileInputStream(src);
+            os = new FileOutputStream(dst);
+            IOUtils.copy(is,os);
+        } finally {
+            IOUtils.close(is,os);
+        }
+    }
+
+    /**
+     * Copy the files in the specified directory to another directory
+     * @param dir Source directory
+     * @param destination Destination Directory
+     */
+    public static void copyFilesInDir(File dir, File destination) throws IOException {
+        for (File file : listFileInDir(dir)) {
+            File destFile = new File(destination, file.getName());
+            if( file.isDirectory() ) {
+                mkdir(destFile);
+                copyFilesInDir(file,destFile);
+            } else {
+                copy(file,destFile);
+            }
+        }
+    }
+
     public static byte[] toByteArray(File file) throws IOException {
         FileInputStream is = new FileInputStream(file);
         try {
@@ -16,6 +57,25 @@ public static byte[] toByteArray(File file) throws IOException {
         }
     }
 
+    public static void checkFileIsDirectory(File... files) throws IOException {
+        for (File file : files) {
+            if( ! file.exists() ) {
+                throw new IOException("File "+file.getPath()+" doesn't exist");
+            }
+            if( ! file.isDirectory() ) {
+                throw new IOException("File "+file.getPath()+" isn't a directory");
+            }
+        }
+    }
+
+    public static File[] listFileInDir(File directory) throws IOException {
+        File[] files = directory.listFiles();
+        if( files == null ) {
+            throw new IOException("Unable to list files in directory: "+directory.getPath());
+        }
+        return files;
+    }
+
     /**
      * List all files/directories in a directory
      *
@@ -27,9 +87,6 @@ public static byte[] toByteArray(File file) throws IOException {
      * @throws IOException If an error listing the file occurs
      */
     public static Set<String> listAllFilesNames(File directory, boolean recursive, boolean includeFiles, boolean includeDirs) throws IOException {
-        if (!directory.isDirectory()) {
-            throw new IOException("File is not a directory: " + directory.getPath());
-        }
         HashSet<String> filepaths = new HashSet<String>();
         recursiveFileNameList(filepaths, directory, null, recursive, includeFiles, includeDirs);
         return filepaths;

core/src/main/java/com/kloudtek/util/io/IOUtils.java

@@ -78,14 +78,16 @@ public static String toString(Reader reader) throws IOException {
     /**
      * Close a closeable object, suppressing any resulting exception
      *
-     * @param closeable Closeable object, can be null (in which case nothing will be done)
+     * @param closeables Closeable objects which can be null (in which case nothing will be done)
      */
-    public static void close(Closeable closeable) {
-        if (closeable != null) {
-            try {
-                closeable.close();
-            } catch (Throwable e) {
-                // needs to be throwable because in some cases closing a classpath resource jar throws ExceptionInInitializerError ?!?!?!?!?!?
+    public static void close(Closeable... closeables) {
+        for (Closeable closeable : closeables) {
+            if (closeable != null) {
+                try {
+                    closeable.close();
+                } catch (Throwable e) {
+                    // needs to be throwable because in some cases closing a classpath resource jar throws ExceptionInInitializerError ?!?!?!?!?!?
+                }
             }
         }
     }

core/src/test/java/com/kloudtek/util/FileUtilsTest.java

@@ -43,7 +43,6 @@ private Set<String> createTmpDirAndListFilenames(boolean recursive, boolean incl
         }
     }
 
-
     @NotNull
     private static HashSet<String> asSet(String... filenames) {
         return new HashSet<String>(Arrays.asList(filenames));