1 files changed, 53 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/JidHelper.java b/src/main/java/de/pixart/messenger/utils/JidHelper.java
new file mode 100644
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+++ b/src/main/java/de/pixart/messenger/utils/JidHelper.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2017, Daniel Gultsch All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation and/or
+ * other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package de.pixart.messenger.utils;
+
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+
+import de.pixart.messenger.xmpp.jid.Jid;
+
+public class JidHelper {
+
+    private static List<String> LOCALPART_BLACKLIST = Arrays.asList("xmpp", "jabber", "me");
+
+    public static String localPartOrFallback(Jid jid) {
+        if (LOCALPART_BLACKLIST.contains(jid.getLocalpart().toLowerCase(Locale.ENGLISH))) {
+            final String domain = jid.getDomainpart();
+            final int index = domain.lastIndexOf('.');
+            return index > 1 ? domain.substring(0, index) : domain;
+        } else {
+            return jid.getUnescapedLocalpart();
+        }
+    }
+
+}
+\ No newline at end of file