Checkout `xmpp-addr` library 0.8.0 (fa47cac8) locally

xmpp-addr: Backfill missing class method for Java 1.7
This backfills missing class methods for `java.nio.charset.StandardCharsets`
and `java.util.Objects` for compatibility with platforms which do not support
these (mainly Android SDK versions <= 18).

Change `minSdkVersion` to 18, backfill missing methods
This reduces the minimum SDK version to 18 (Android 4.3), which notably is
the last supported version for the BlackBerry OS 10.3 Android compatibility
layer.

Drop support for Android 4.1 and 4.2

1 files changed, 20 insertions, 1 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java b/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
index 2817c55c7..8f2aa4e61 100644
--- a/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
+++ b/src/main/java/de/pixart/messenger/ui/util/MyLinkify.java
@@ -40,6 +40,8 @@ import de.pixart.messenger.utils.GeoHelper;
 import de.pixart.messenger.utils.Patterns;
 import de.pixart.messenger.utils.XmppUri;
 
+import static java.lang.Character.isAlphabetic;
+
 public class MyLinkify {
 
     private static final Linkify.TransformFilter WEBURL_TRANSFORM_FILTER = (matcher, url) -> {
@@ -81,7 +83,7 @@ public class MyLinkify {
             if (end < cs.length()) {
                 // Reject strings that were probably matched only because they contain a dot followed by
                 // by some known TLD (see also comment for WORD_BOUNDARY in Patterns.java)
-                if (Character.isAlphabetic(cs.charAt(end - 1)) && Character.isAlphabetic(cs.charAt(end))) {
+                if (isAlphabetic(cs.charAt(end - 1)) && isAlphabetic(cs.charAt(end))) {
                     return false;
                 }
             }
@@ -95,6 +97,23 @@ public class MyLinkify {
         return uri.isJidValid();
     };
 
+    private static boolean isAlphabetic(final int code) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+            return Character.isAlphabetic(code);
+        }
+        switch (Character.getType(code)) {
+            case Character.UPPERCASE_LETTER:
+            case Character.LOWERCASE_LETTER:
+            case Character.TITLECASE_LETTER:
+            case Character.MODIFIER_LETTER:
+            case Character.OTHER_LETTER:
+            case Character.LETTER_NUMBER:
+                return true;
+            default:
+                return false;
+        }
+    }
+
     public static void addLinks(Editable body, boolean includeGeo) {
         Linkify.addLinks(body, Patterns.XMPP_PATTERN, "xmpp", XMPPURI_MATCH_FILTER, null);
         Linkify.addLinks(body, Patterns.AUTOLINK_WEB_URL, "http", WEBURL_MATCH_FILTER, WEBURL_TRANSFORM_FILTER);