1 files changed, 133 insertions, 0 deletions
diff --git a/plugins/cordova-plugin-file/src/android/DirectoryManager.java b/plugins/cordova-plugin-file/src/android/DirectoryManager.java
new file mode 100644
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+++ b/plugins/cordova-plugin-file/src/android/DirectoryManager.java
@@ -0,0 +1,133 @@
+/*
+       Licensed to the Apache Software Foundation (ASF) under one
+       or more contributor license agreements.  See the NOTICE file
+       distributed with this work for additional information
+       regarding copyright ownership.  The ASF licenses this file
+       to you under the Apache License, Version 2.0 (the
+       "License"); you may not use this file except in compliance
+       with the License.  You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+       Unless required by applicable law or agreed to in writing,
+       software distributed under the License is distributed on an
+       "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+       KIND, either express or implied.  See the License for the
+       specific language governing permissions and limitations
+       under the License.
+*/
+package org.apache.cordova.file;
+
+import android.os.Environment;
+import android.os.StatFs;
+
+import java.io.File;
+
+/**
+ * This class provides file directory utilities.
+ * All file operations are performed on the SD card.
+ *
+ * It is used by the FileUtils class.
+ */
+public class DirectoryManager {
+
+    @SuppressWarnings("unused")
+    private static final String LOG_TAG = "DirectoryManager";
+
+    /**
+     * Determine if a file or directory exists.
+     * @param name				The name of the file to check.
+     * @return					T=exists, F=not found
+     */
+    public static boolean testFileExists(String name) {
+        boolean status;
+
+        // If SD card exists
+        if ((testSaveLocationExists()) && (!name.equals(""))) {
+            File path = Environment.getExternalStorageDirectory();
+            File newPath = constructFilePaths(path.toString(), name);
+            status = newPath.exists();
+        }
+        // If no SD card
+        else {
+            status = false;
+        }
+        return status;
+    }
+
+    /**
+     * Get the free disk space
+     *
+     * @return 		Size in KB or -1 if not available
+     */
+    public static long getFreeDiskSpace(boolean checkInternal) {
+        String status = Environment.getExternalStorageState();
+        long freeSpace = 0;
+
+        // If SD card exists
+        if (status.equals(Environment.MEDIA_MOUNTED)) {
+            freeSpace = freeSpaceCalculation(Environment.getExternalStorageDirectory().getPath());
+        }
+        else if (checkInternal) {
+            freeSpace = freeSpaceCalculation("/");
+        }
+        // If no SD card and we haven't been asked to check the internal directory then return -1
+        else {
+            return -1;
+        }
+
+        return freeSpace;
+    }
+
+    /**
+     * Given a path return the number of free KB
+     *
+     * @param path to the file system
+     * @return free space in KB
+     */
+    private static long freeSpaceCalculation(String path) {
+        StatFs stat = new StatFs(path);
+        long blockSize = stat.getBlockSize();
+        long availableBlocks = stat.getAvailableBlocks();
+        return availableBlocks * blockSize / 1024;
+    }
+
+    /**
+     * Determine if SD card exists.
+     *
+     * @return				T=exists, F=not found
+     */
+    public static boolean testSaveLocationExists() {
+        String sDCardStatus = Environment.getExternalStorageState();
+        boolean status;
+
+        // If SD card is mounted
+        if (sDCardStatus.equals(Environment.MEDIA_MOUNTED)) {
+            status = true;
+        }
+
+        // If no SD card
+        else {
+            status = false;
+        }
+        return status;
+    }
+
+    /**
+     * Create a new file object from two file paths.
+     *
+     * @param file1			Base file path
+     * @param file2			Remaining file path
+     * @return				File object
+     */
+    private static File constructFilePaths (String file1, String file2) {
+        File newPath;
+        if (file2.startsWith(file1)) {
+            newPath = new File(file2);
+        }
+        else {
+            newPath = new File(file1 + "/" + file2);
+        }
+        return newPath;
+    }
+}