1 files changed, 36 insertions, 0 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/FileUtils.java b/src/main/java/de/thedevstack/conversationsplus/utils/FileUtils.java
index d1ac2d34..3ee15f70 100644
--- a/src/main/java/de/thedevstack/conversationsplus/utils/FileUtils.java
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/FileUtils.java
@@ -10,8 +10,10 @@ import android.os.Build;
 import android.os.Environment;
 import android.provider.DocumentsContract;
 import android.provider.MediaStore;
+import android.provider.OpenableColumns;
 
 import java.io.File;
+import java.util.List;
 
 import de.thedevstack.conversationsplus.ConversationsPlusApplication;
 
@@ -187,6 +189,40 @@ public final class FileUtils {
 		return secondToLastPart;
 	}
 
+	/**
+	 * Retrieve file size from given uri
+	 * @param context actual Context
+	 * @param uri uri to file
+	 * @return file size or -1 in case of error
+	 */
+	private static long getFileSize(Context context, Uri uri) {
+		Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
+		if (cursor != null && cursor.moveToFirst()) {
+			return cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
+		} else {
+			return -1;
+		}
+	}
+
+	/**
+	 * Check for given list of uris if corresponding file sizes are all smaller than given maximum
+	 * @param context actual Context
+	 * @param uris list of uris
+	 * @param max maximum file size
+	 * @return true if all file sizes are smaller than max, false otherwise
+	 */
+	public static boolean allFilesUnderSize(Context context, List<Uri> uris, long max) {
+		if (max <= 0) {
+			return true; //exception to be compatible with HTTP Upload < v0.2
+		}
+		for(Uri uri : uris) {
+			if (getFileSize(context, uri) > max) {
+				return false;
+			}
+		}
+		return true;
+	}
+
 	private FileUtils() {
 		// Utility class - do not instantiate
 	}