use libphonenumber for Linkify.PHONE_NUMBER

This commit replaces a regex pattern match for Linkify.PHONE_NUMBER
with a call to libphonenumber's PhoneNumberUtil.findNumbers().

Bug: 5533245
Change-Id: I0e0563b241fb62e77d7f49e4a8484c6b0685dd8f

core/java/android/text/util/Linkify.java

diff --git a/core/java/android/text/util/Linkify.java b/core/java/android/text/util/Linkify.java
index 98605888c..2bc1c6a 100644
--- a/core/java/android/text/util/Linkify.java
+++ b/core/java/android/text/util/Linkify.java
@@ -16,6 +16,7 @@
 
 package android.text.util;
 
+import android.telephony.PhoneNumberUtils;
 import android.text.method.LinkMovementMethod;
 import android.text.method.MovementMethod;
 import android.text.style.URLSpan;
@@ -32,9 +33,14 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
+import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import com.android.i18n.phonenumbers.PhoneNumberMatch;
+import com.android.i18n.phonenumbers.PhoneNumberUtil;
+import com.android.i18n.phonenumbers.PhoneNumberUtil.Leniency;
+
 /**
  *  Linkify take a piece of text and a regular expression and turns all of the
  *  regex matches in the text into clickable links.  This is particularly
@@ -221,9 +227,7 @@
         }
 
         if ((mask & PHONE_NUMBERS) != 0) {
-            gatherLinks(links, text, Patterns.PHONE,
-                new String[] { "tel:" },
-                sPhoneNumberMatchFilter, sPhoneNumberTransformFilter);
+            gatherTelLinks(links, text);
         }
 
         if ((mask & MAP_ADDRESSES) != 0) {
@@ -443,6 +447,19 @@
         }
     }
 
+    private static final void gatherTelLinks(ArrayList<LinkSpec> links, Spannable s) {
+        PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance();
+        Iterable<PhoneNumberMatch> matches = phoneUtil.findNumbers(s.toString(),
+                Locale.getDefault().getCountry(), Leniency.POSSIBLE, Long.MAX_VALUE);
+        for (PhoneNumberMatch match : matches) {
+            LinkSpec spec = new LinkSpec();
+            spec.url = "tel:" + PhoneNumberUtils.normalizeNumber(match.rawString());
+            spec.start = match.start();
+            spec.end = match.end();
+            links.add(spec);
+        }
+    }
+
     private static final void gatherMapLinks(ArrayList<LinkSpec> links, Spannable s) {
         String string = s.toString();
         String address;