1 files changed, 103 insertions, 0 deletions
diff --git a/app/src/main/java/de/danoeh/antennapod/util/Converter.java b/app/src/main/java/de/danoeh/antennapod/util/Converter.java
new file mode 100644
index 000000000..f4c2b2f66
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/util/Converter.java
@@ -0,0 +1,103 @@
+package de.danoeh.antennapod.util;
+
+import android.util.Log;
+
+/** Provides methods for converting various units. */
+public final class Converter {
+    /** Class shall not be instantiated. */
+    private Converter() {
+    }
+
+    /** Logging tag. */
+    private static final String TAG = "Converter";
+
+
+    /** Indicates that the value is in the Byte range.*/
+    private static final int B_RANGE = 0;
+    /** Indicates that the value is in the Kilobyte range.*/
+    private static final int KB_RANGE = 1;
+    /** Indicates that the value is in the Megabyte range.*/
+    private static final int MB_RANGE = 2;
+    /** Indicates that the value is in the Gigabyte range.*/
+    private static final int GB_RANGE = 3;
+    /** Determines the length of the number for best readability.*/
+    private static final int NUM_LENGTH = 1024;
+    
+    
+    private static final int HOURS_MIL = 3600000;
+	private static final int MINUTES_MIL = 60000;
+	private static final int SECONDS_MIL = 1000;
+
+    /** Takes a byte-value and converts it into a more readable
+     *  String.
+     *  @param input The value to convert
+     *  @return The converted String with a unit
+     * */
+    public static String byteToString(final long input) {
+        int i = 0;
+        int result = 0;
+
+        for (i = 0; i < GB_RANGE + 1; i++) {
+            result = (int) (input / Math.pow(1024, i));
+            if (result < NUM_LENGTH) {
+                break;
+            }
+        }
+
+        switch (i) {
+            case B_RANGE:
+                return result + " B";
+            case KB_RANGE:
+                return result + " KB";
+            case MB_RANGE:
+                return result + " MB";
+            case GB_RANGE:
+                return result + " GB";
+            default:
+                Log.e(TAG, "Error happened in byteToString");
+                return "ERROR";
+        }
+    }
+    
+    /** Converts milliseconds to a string containing hours, minutes and seconds */
+    public static String getDurationStringLong(int duration) {	
+    	int h = duration / HOURS_MIL;
+    	int rest = duration - h * HOURS_MIL;
+    	int m = rest / MINUTES_MIL;
+    	rest -= m * MINUTES_MIL;
+    	int s = rest / SECONDS_MIL;
+    	
+    	return String.format("%02d:%02d:%02d", h, m, s);
+    }
+    
+    /** Converts milliseconds to a string containing hours and minutes */
+    public static String getDurationStringShort(int duration) {
+    	int h = duration / HOURS_MIL;
+    	int rest = duration - h * HOURS_MIL;
+    	int m = rest / MINUTES_MIL;
+    	
+    	return String.format("%02d:%02d", h, m);
+    }
+
+    /** Converts long duration string (HH:MM:SS) to milliseconds. */
+    public static int durationStringLongToMs(String input) {
+        String[] parts = input.split(":");
+        if (parts.length != 3) {
+            return 0;
+        }
+        return Integer.valueOf(parts[0]) * 3600 * 1000 +
+                Integer.valueOf(parts[1]) * 60 * 1000 +
+                Integer.valueOf(parts[2]) * 1000;
+    }
+
+    /** Converts short duration string (HH:MM) to milliseconds. */
+    public static int durationStringShortToMs(String input) {
+        String[] parts = input.split(":");
+        if (parts.length != 2) {
+            return 0;
+        }
+        return Integer.valueOf(parts[0]) * 3600 * 1000 +
+                Integer.valueOf(parts[1]) * 1000 * 60;
+    }
+    
+}