Create LanguageUtils class

Moved the localeFromStringIgnoringScriptAndExtensions function
to the LanguageUtils class.

Author: mikunimaru

AnkiDroid/src/main/java/com/ichi2/anki/JavaScriptTTS.java

@@ -3,7 +3,8 @@
 import android.content.Context;
 import android.os.Bundle;
 import android.speech.tts.TextToSpeech;
-import java.util.Locale;
+
+import com.ichi2.anki.LanguageUtils;
 
 /**
  * Since it is assumed that only advanced users will use the JavaScript api, 
@@ -63,7 +64,7 @@ public int speak(String text) {
     public int setLanguage(String loc) {
         // The Int values will be returned
         // Code indicating the support status for the locale. See LANG_AVAILABLE, LANG_COUNTRY_AVAILABLE, LANG_COUNTRY_VAR_AVAILABLE, LANG_MISSING_DATA and LANG_NOT_SUPPORTED.
-        return mTts.setLanguage(localeFromStringIgnoringScriptAndExtensions(loc));
+        return mTts.setLanguage(LanguageUtils.localeFromStringIgnoringScriptAndExtensions(loc));
     }
 
 
@@ -98,30 +99,4 @@ public void stop() {
         mTts.stop();
     }
 
-      /**
-     * Convert a string representation of a locale, in the format returned by Locale.toString(),
-     * into a Locale object, disregarding any script and extensions fields (i.e. using solely the
-     * language, country and variant fields).
-     * <p>
-     * Returns a Locale object constructed from an empty string if the input string is null, empty
-     * or contains more than 3 fields separated by underscores.
-     */
-    private static Locale localeFromStringIgnoringScriptAndExtensions(String localeCode) {
-        if (localeCode == null) {
-            return new Locale("");
-        }
-
-        String[] fields = localeCode.split("_");
-        switch (fields.length) {
-            case 1:
-                return new Locale(fields[0]);
-            case 2:
-                return new Locale(fields[0], fields[1]);
-            case 3:
-                return new Locale(fields[0], fields[1], fields[2]);
-            default:
-                return new Locale("");
-        }
-    }
-
 }

AnkiDroid/src/main/java/com/ichi2/anki/LanguageUtils.java

@@ -0,0 +1,42 @@
+package com.ichi2.anki;
+
+import java.util.Locale;
+
+public class LanguageUtils {
+
+    /**
+     * Convert a string representation of a locale, in the format returned by Locale.toString(),
+     * into a Locale object, disregarding any script and extensions fields (i.e. using solely the
+     * language, country and variant fields).
+     * <p>
+     * Returns a Locale object constructed from an empty string if the input string is null, empty
+     * or contains more than 3 fields separated by underscores.
+     */
+    public static Locale localeFromStringIgnoringScriptAndExtensions(String localeCode) {
+      if (localeCode == null) {
+          return new Locale("");
+      }
+
+      localeCode = stripScriptAndExtensions(localeCode);
+
+      String[] fields = localeCode.split("_");
+      switch (fields.length) {
+          case 1:
+              return new Locale(fields[0]);
+          case 2:
+              return new Locale(fields[0], fields[1]);
+          case 3:
+              return new Locale(fields[0], fields[1], fields[2]);
+          default:
+              return new Locale("");
+      }
+  }
+
+  private static String stripScriptAndExtensions(String localeCode) {
+      int hashPos = localeCode.indexOf('#');
+      if (hashPos >= 0) {
+          localeCode = localeCode.substring(0, hashPos);
+      }
+      return localeCode;
+  }
+}

AnkiDroid/src/main/java/com/ichi2/anki/ReadText.java

@@ -29,6 +29,7 @@
 import com.afollestad.materialdialogs.MaterialDialog;
 import com.google.android.material.snackbar.Snackbar;
 import com.ichi2.libanki.Sound;
+import com.ichi2.anki.LanguageUtils;
 
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
@@ -56,7 +57,7 @@ public static Sound.SoundSide getmQuestionAnswer() {
     }
 
     public static void speak(String text, String loc, int queueMode) {
-        int result = mTts.setLanguage(localeFromStringIgnoringScriptAndExtensions(loc));
+        int result = mTts.setLanguage(LanguageUtils.localeFromStringIgnoringScriptAndExtensions(loc));
         if (result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) {
             UIUtils.showThemedToast(mReviewer.get(), mReviewer.get().getString(R.string.no_tts_available_message)
                     + " (" + loc + ")", false);
@@ -218,48 +219,12 @@ private static void textToSpeech(String text, long did, int ord, Sound.SoundSide
         selectTts(mTextToSpeak, mDid, mOrd, mQuestionAnswer);
     }
 
-    /**
-     * Convert a string representation of a locale, in the format returned by Locale.toString(),
-     * into a Locale object, disregarding any script and extensions fields (i.e. using solely the
-     * language, country and variant fields).
-     * <p>
-     * Returns a Locale object constructed from an empty string if the input string is null, empty
-     * or contains more than 3 fields separated by underscores.
-     */
-    private static Locale localeFromStringIgnoringScriptAndExtensions(String localeCode) {
-        if (localeCode == null) {
-            return new Locale("");
-        }
-
-        localeCode = stripScriptAndExtensions(localeCode);
-
-        String[] fields = localeCode.split("_");
-        switch (fields.length) {
-            case 1:
-                return new Locale(fields[0]);
-            case 2:
-                return new Locale(fields[0], fields[1]);
-            case 3:
-                return new Locale(fields[0], fields[1], fields[2]);
-            default:
-                return new Locale("");
-        }
-    }
-
-    private static String stripScriptAndExtensions(String localeCode) {
-        int hashPos = localeCode.indexOf('#');
-        if (hashPos >= 0) {
-            localeCode = localeCode.substring(0, hashPos);
-        }
-        return localeCode;
-    }
-
     /**
      * Returns true if the TTS engine supports the language of the locale represented by localeCode
      * (which should be in the format returned by Locale.toString()), false otherwise.
      */
     private static boolean isLanguageAvailable(String localeCode) {
-        return mTts.isLanguageAvailable(localeFromStringIgnoringScriptAndExtensions(localeCode)) >=
+        return mTts.isLanguageAvailable(LanguageUtils.localeFromStringIgnoringScriptAndExtensions(localeCode)) >=
                 TextToSpeech.LANG_AVAILABLE;
     }