From ef2875bd63452f5fcc2e0d793b2d1daa89fb1ffe Mon Sep 17 00:00:00 2001
From: sbosse <sbosse@uni-bremen.de>
Date: Mon, 21 Jul 2025 23:23:12 +0200
Subject: [PATCH] Mon 21 Jul 22:43:21 CEST 2025

---
 .../src/android/DirectoryManager.java         | 134 ++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 js/ui/cordova/plugins/cordova-plugin-file/src/android/DirectoryManager.java

diff --git a/js/ui/cordova/plugins/cordova-plugin-file/src/android/DirectoryManager.java b/js/ui/cordova/plugins/cordova-plugin-file/src/android/DirectoryManager.java
new file mode 100644
index 0000000..07af5ea
--- /dev/null
+++ b/js/ui/cordova/plugins/cordova-plugin-file/src/android/DirectoryManager.java
@@ -0,0 +1,134 @@
+/*
+       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 space in external storage
+     *
+     * @return 		Size in KB or -1 if not available
+     */
+    public static long getFreeExternalStorageSpace() {
+        String status = Environment.getExternalStorageState();
+        long freeSpaceInBytes = 0;
+
+        // Check if external storage exists
+        if (status.equals(Environment.MEDIA_MOUNTED)) {
+            freeSpaceInBytes = getFreeSpaceInBytes(Environment.getExternalStorageDirectory().getPath());
+        } else {
+            // If no external storage then return -1
+            return -1;
+        }
+
+        return freeSpaceInBytes / 1024;
+    }
+
+    /**
+     * Given a path return the number of free bytes in the filesystem containing the path.
+     *
+     * @param path to the file system
+     * @return free space in bytes
+     */
+    public static long getFreeSpaceInBytes(String path) {
+        try {
+            StatFs stat = new StatFs(path);
+            long blockSize = stat.getBlockSize();
+            long availableBlocks = stat.getAvailableBlocks();
+            return availableBlocks * blockSize;
+        } catch (IllegalArgumentException e) {
+            // The path was invalid. Just return 0 free bytes.
+            return 0;
+        }
+    }
+
+    /**
+     * 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;
+    }
+}