Fix mentions length count

app/src/main/java/app/fedilab/android/mastodon/helper/ComposeHelper.java

@@ -16,10 +16,16 @@ package app.fedilab.android.mastodon.helper;
 
 import static app.fedilab.android.mastodon.helper.Helper.mentionLongPattern;
 import static app.fedilab.android.mastodon.helper.Helper.mentionPattern;
+import static app.fedilab.android.mastodon.helper.Helper.mentionPatternALL;
+import static app.fedilab.android.mastodon.helper.MastodonHelper.countWithEmoji;
+
+import android.util.Patterns;
 
 import java.util.ArrayList;
 import java.util.regex.Matcher;
 
+import app.fedilab.android.mastodon.ui.drawer.ComposeAdapter;
+
 public class ComposeHelper {
 
 
@@ -35,26 +41,27 @@ public class ComposeHelper {
 
 
         ArrayList<String> mentions = new ArrayList<>();
-        int mentionLength = 0;
+        int mentionLength;
         StringBuilder mentionString = new StringBuilder();
-        Matcher matcher = mentionLongPattern.matcher(content);
+        Matcher matcher = mentionPatternALL.matcher(content);
         while (matcher.find()) {
             String mentionLong = matcher.group(1);
+            if(mentionLong != null) {
                 if (!mentions.contains(mentionLong)) {
                     mentions.add(mentionLong);
                 }
             }
-        matcher = mentionPattern.matcher(content);
+            String mentionShort = matcher.group(2);
-        while (matcher.find()) {
+            if(mentionShort != null) {
-            String mention = matcher.group(1);
+                if (!mentions.contains(mentionShort)) {
-            if (!mentions.contains(mention)) {
+                    mentions.add(mentionShort);
-                mentions.add(mention);
+                }
             }
         }
         for (String mention : mentions) {
             mentionString.append(mention).append(" ");
         }
-        mentionLength = mentionString.length() + 1;
+        mentionLength = countLength(mentionString.toString()) + 1;
         int maxCharsPerMessage = maxChars - mentionLength;
         int totalCurrent = 0;
         ArrayList<String> reply = new ArrayList<>();
@@ -95,4 +102,23 @@ public class ComposeHelper {
         }
         return reply;
     }
+
+
+    /***
+     * Returns the length used when composing a toot
+     * @param mentions String containing mentions
+     * @return int - characters used
+     */
+    public static int countLength(String mentions) {
+        String contentCount = mentions;
+        contentCount = contentCount.replaceAll("(?i)(^|[^/\\w])@(([a-z0-9_]+)@[a-z0-9.-]+[a-z0-9]+)", "$1@$3");
+        Matcher matcherALink = Patterns.WEB_URL.matcher(contentCount);
+        while (matcherALink.find()) {
+            final String url = matcherALink.group(1);
+            if (url != null) {
+                contentCount = contentCount.replace(url, "abcdefghijklmnopkrstuvw");
+            }
+        }
+        return contentCount.length();
+    }
 }

app/src/main/java/app/fedilab/android/mastodon/helper/Helper.java

@@ -346,6 +346,9 @@ public class Helper {
     public static final Pattern groupPattern = Pattern.compile("(![\\w_]+)");
     public static final Pattern mentionPattern = Pattern.compile("(@[\\w_.-]?[\\w]+)");
     public static final Pattern mentionLongPattern = Pattern.compile("(@[\\w_.-]+@[a-zA-Z0-9][a-zA-Z0-9.-]{1,61}[a-zA-Z0-9](?:\\.[a-zA-Z]{2,})+)");
+
+
+    public static final Pattern mentionPatternALL = Pattern.compile("(@[\\w_.-]+@[a-zA-Z0-9][a-zA-Z0-9.-]{1,61}[a-zA-Z0-9](?:\\.[a-zA-Z]{2,})+)|(@[\\w_.-]?[\\w]+)");
     public static final Pattern mathsPattern = Pattern.compile("\\\\\\(|\\\\\\[");
     public static final Pattern mathsComposePattern = Pattern.compile("\\\\\\(.*\\\\\\)|\\\\\\[.*\\\\\\]");
     public static final Pattern twitterPattern = Pattern.compile("((@[\\w]+)@twitter\\.com)");

app/src/main/java/app/fedilab/android/mastodon/helper/MastodonHelper.java

@@ -397,7 +397,7 @@ public class MastodonHelper {
      * @param text String - The current text
      * @return int - Number of characters used by emoji
      */
-    private static int countWithEmoji(String text) {
+    static int countWithEmoji(String text) {
         int emojiCount = 0;
         for (int i = 0; i < text.length(); i++) {
             int type = Character.getType(text.charAt(i));

app/src/main/java/app/fedilab/android/mastodon/ui/drawer/ComposeAdapter.java

@@ -541,7 +541,7 @@ public class ComposeAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder
                 buttonVisibility(holder);
                 //Text is copied pasted and the content is greater than the max of the instance
                 int max_car = MastodonHelper.getInstanceMaxChars(context);
-                if (count > max_car) {
+                if (ComposeHelper.countLength(s.toString()) > max_car) {
                     SharedPreferences sharedpreferences = PreferenceManager.getDefaultSharedPreferences(context);
                     String defaultFormat = sharedpreferences.getString(context.getString(R.string.SET_THREAD_MESSAGE), context.getString(R.string.DEFAULT_THREAD_VALUE));
                     //User asked to be prompted for threading long messages