1 files changed, 82 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/StorageHelper.java b/src/org/cyanogenmod/wallpapers/photophase/StorageHelper.java
new file mode 100644
index 0000000..9d73313
--- /dev/null
+++ b/src/org/cyanogenmod/wallpapers/photophase/StorageHelper.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2013 The CyanogenMod Project
+ *
+ * Licensed 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.cyanogenmod.wallpapers.photophase;
+
+import android.util.Log;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
+/**
+ * A helper class to deal with android storage
+ */
+public final class StorageHelper {
+
+    private static final String TAG = "StorageHelper";
+
+    private static final String EXTERNAL_REGEXP = "(?i).*vold.*(fuse|vfat|ntfs|exfat|fat32|ext3|ext4).*rw.*";
+
+    /**
+     * Method that returns all the external mounts
+     *
+     * @return List<String> All the external mounts
+     */
+    public static List<String> getExternalMounts() {
+        final List<String> out = new ArrayList<String>();
+
+        // Execute the mount command to list mounts
+        final StringBuilder sb = new StringBuilder();
+        try {
+            final Process process =
+                    new ProcessBuilder().command("mount")
+                        .redirectErrorStream(true).start();
+            process.waitFor();
+            final InputStream is = process.getInputStream();
+            byte[] buffer = new byte[1024];
+            int read = 0;
+            while ((read = is.read(buffer, 0, 1024)) != -1) {
+                sb.append(new String(buffer, 0, read));
+            }
+            is.close();
+        } catch (IOException ioex) {
+            Log.e(TAG, "Failed to list external mounts", ioex);
+        } catch (InterruptedException iex) {
+            Log.e(TAG, "Failed to list external mounts", iex);
+        }
+
+        // Parse the output
+        final String[] lines = sb.toString().split("\n");
+        for (String line : lines) {
+            if (!line.toLowerCase(Locale.US).contains("asec")) {
+                if (line.matches(EXTERNAL_REGEXP)) {
+                    String[] parts = line.split(" ");
+                    for (String part : parts) {
+                        if (part.startsWith("/")) {
+                            if (!part.toLowerCase(Locale.US).contains("vold")) {
+                                out.add(part);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        return out;
+    }
+}