refactored filename and extension parsing

1 files changed, 19 insertions, 0 deletions

diff --git a/src/main/java/de/pixart/messenger/services/AbstractConnectionManager.java b/src/main/java/de/pixart/messenger/services/AbstractConnectionManager.java
index 3399b7861..47c4c9171 100644
--- a/src/main/java/de/pixart/messenger/services/AbstractConnectionManager.java
+++ b/src/main/java/de/pixart/messenger/services/AbstractConnectionManager.java
@@ -138,4 +138,23 @@ public class AbstractConnectionManager {
         PowerManager powerManager = (PowerManager) mXmppConnectionService.getSystemService(Context.POWER_SERVICE);
         return powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, name);
     }
+
+    public static class Extension {
+        public final String main;
+        public final String secondary;
+
+        private Extension(String main, String secondary) {
+            this.main = main;
+            this.secondary = secondary;
+        }
+
+        public static Extension of(String path) {
+            final int pos = path.lastIndexOf('/');
+            final String filename = path.substring(pos + 1).toLowerCase();
+            final String[] parts = filename.split("\\.");
+            final String main = parts.length >= 2 ? parts[parts.length - 1] : null;
+            final String secondary = parts.length >= 3 ? parts[parts.length - 2] : null;
+            return new Extension(main, secondary);
+        }
+    }
 }