Merge 4bfc476 into 2ee24a6

android-json-form-wizard/src/main/java/com/vijay/jsonwizard/activities/JsonFormBaseActivity.java

@@ -33,6 +33,8 @@
 import java.util.List;
 import java.util.Map;
 
+import static com.vijay.jsonwizard.utils.NativeFormLangUtils.getTranslatedString;
+
 abstract class JsonFormBaseActivity extends MultiLanguageActivity implements OnFieldsInvalid {
     protected static final String TAG = JsonFormActivity.class.getSimpleName();
     protected static final String JSON_STATE = "jsonState";
@@ -56,6 +58,8 @@ abstract class JsonFormBaseActivity extends MultiLanguageActivity implements OnF
     private Map<String, ValidationStatus> invalidFields = new HashMap<>();
     private boolean isPreviousPressed = false;
 
+    public static final String PERFORM_FORM_TRANSLATION = "perform_form_translation";
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -69,7 +73,7 @@ protected void onCreate(Bundle savedInstanceState) {
         lifeCycleListeners = new ArrayList<>();
         isFormFragmentInitialized = false;
         if (savedInstanceState == null) {
-            init(getIntent().getStringExtra(JsonFormConstants.JSON_FORM_KEY.JSON));
+            init(getForm());
             initializeFormFragment();
             onFormStart();
             this.form = extractForm(getIntent().getSerializableExtra(JsonFormConstants.JSON_FORM_KEY.FORM));
@@ -82,6 +86,14 @@ protected void onCreate(Bundle savedInstanceState) {
         }
     }
 
+    private String getForm() {
+        String jsonForm = getIntent().getStringExtra(JsonFormConstants.JSON_FORM_KEY.JSON);
+        if (getIntent().getBooleanExtra(PERFORM_FORM_TRANSLATION, false)) {
+            jsonForm = getTranslatedString(jsonForm);
+        }
+        return jsonForm;
+    }
+
     public void init(String json) {
         try {
             setmJSONObject(new JSONObject(json));

android-json-form-wizard/src/main/java/com/vijay/jsonwizard/utils/NativeFormLangUtils.java

@@ -7,6 +7,11 @@
 import android.util.Log;
 
 import java.util.Locale;
+import java.util.ResourceBundle;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import timber.log.Timber;
 
 public class NativeFormLangUtils {
 
@@ -31,4 +36,44 @@ public static Context setAppLocale(Context ctx, String language) {
 
         return context;
     }
+
+    /**
+     * Performs translation on an interpolated {@param str}
+     * i.e. a String containing tokens in the format {{string_name}},
+     * replacing these tokens with their corresponding values for the current Locale
+     *
+     * @param str
+     * @return
+     */
+    public static String getTranslatedString(String str) {
+        String translationsFileName = getTranslationsFileName(str);
+        if (translationsFileName.isEmpty()) {
+            Timber.e("Could not translate the String. Translation file name is not specified!");
+            return str;
+        }
+
+        ResourceBundle mlsResourceBundle = ResourceBundle.getBundle(getTranslationsFileName(str));
+
+        StringBuffer stringBuffer = new StringBuffer();
+        Pattern interpolatedStringPattern = Pattern.compile("\\{\\{([a-zA-Z_0-9\\.]+)\\}\\}");
+        Matcher matcher = interpolatedStringPattern.matcher(str);
+        while (matcher.find()) {
+            matcher.appendReplacement(stringBuffer, mlsResourceBundle.getString(matcher.group(1)));
+        }
+        matcher.appendTail(stringBuffer);
+
+        return stringBuffer.toString();
+    }
+
+    /**
+     * Gets the name of the translation file to be applied to the {@param str}
+     *
+     * @param str
+     * @return
+     */
+    public static String getTranslationsFileName(String str) {
+        Pattern propertiesFileNamePattern = Pattern.compile("\"?properties_file_name\"?: \"([a-zA-Z_0-9\\.]+)\"");
+        Matcher matcher = propertiesFileNamePattern.matcher(str);
+        return matcher.find() ? matcher.group(1) : "";
+    }
 }

android-json-form-wizard/src/main/java/com/vijay/jsonwizard/utils/Utils.java

@@ -40,7 +40,6 @@
 
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.InputStreamReader;
 import java.text.ParseException;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -52,12 +51,14 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Scanner;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 
 import timber.log.Timber;
 
 import static com.vijay.jsonwizard.constants.JsonFormConstants.KEY;
+import static com.vijay.jsonwizard.utils.NativeFormLangUtils.getTranslatedString;
 
 public class Utils {
     private static ProgressDialog progressDialog;
@@ -482,18 +483,59 @@ private static String cleanConditionString(String conditionStringRaw) {
 
     public static Iterable<Object> readYamlFile(String fileName, Context context) {
         Yaml yaml = new Yaml();
-        InputStreamReader inputStreamReader;
         Iterable<Object> objectIterable = null;
         try {
-            inputStreamReader = new InputStreamReader(context.getAssets().open(fileName));
-            objectIterable = yaml.loadAll(inputStreamReader);
+            String translatedYamlStr = getTranslatedYamlFile(fileName, context);
+            objectIterable = yaml.loadAll(translatedYamlStr);
         } catch (IOException e) {
             Timber.e(e);
         }
 
         return objectIterable;
     }
 
+    /**
+     * Translates a yaml file specified by {@param fileName} and returns its String representation
+     *
+     * @param fileName
+     * @param context
+     *
+     * @return Translated Yaml file in its String representation
+     *
+     * @throws IOException
+     */
+    public static String getTranslatedYamlFile(String fileName, Context context) throws IOException {
+        return getTranslatedString(getAssetFileAsString(fileName, context));
+    }
+
+    /**
+     *
+     * Gets a file specified by {@param fileName} from the assets folder as a String
+     *
+     * @param fileName
+     * @param context
+     *
+     * @return A file from the assets folder as a String
+     *
+     * @throws IOException
+     */
+    public static String getAssetFileAsString(String fileName, Context context) throws IOException {
+        InputStream inputStream = context.getAssets().open(fileName);
+        return convertStreamToString(inputStream);
+    }
+
+    /**
+     * Converts an {@link InputStream} into a String
+     *
+     * @param inputStream
+     *
+     * @return String representation of an {@link InputStream}
+     */
+    public static String convertStreamToString(InputStream inputStream) {
+        Scanner s = new Scanner(inputStream).useDelimiter("\\A");
+        return s.hasNext() ? s.next() : "";
+    }
+
     public static void buildRulesWithUniqueId(JSONObject element, String uniqueId, String ruleType, WidgetArgs widgetArgs, Map<String, List<Map<String, Object>>> rulesFileMap) throws JSONException {
         JSONObject rules = element.optJSONObject(ruleType);
         if (rules != null) {

android-json-form-wizard/src/test/java/com/vijay/jsonwizard/utils/NativeFomLangUtilsTest.java

@@ -0,0 +1,76 @@
+package com.vijay.jsonwizard.utils;
+
+import android.content.Context;
+import android.content.res.AssetManager;
+
+import org.junit.Test;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Locale;
+
+import static com.vijay.jsonwizard.utils.Utils.convertStreamToString;
+import static com.vijay.jsonwizard.utils.Utils.getTranslatedYamlFile;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Created by Vincent Karuri on 20/02/2020
+ */
+public class NativeFomLangUtilsTest {
+
+    @Test
+    public void testJsonFormTranslationShouldTranslateForm() {
+        Locale.setDefault(new Locale("id"));
+        String expectedJsonForm = getFileContentsAsString("test_form_translation_in");
+        String interpolatedJsonForm = getFileContentsAsString("test_form_translation_interpolated");
+        assertEquals(expectedJsonForm, NativeFormLangUtils.getTranslatedString(interpolatedJsonForm));
+
+        Locale.setDefault(new Locale("en", "US"));
+        expectedJsonForm = getFileContentsAsString("test_form_translation_en_US");
+        assertEquals(expectedJsonForm, NativeFormLangUtils.getTranslatedString(interpolatedJsonForm));
+    }
+
+    @Test
+    public void testYamlFileTranslationShouldTranslateYamlFile() throws IOException {
+        Context context = mockAssetManager("test_yaml_translation_interpolated");
+        Locale.setDefault(new Locale("en", "US"));
+        String translatedYamlStr = getTranslatedYamlFile("file_name", context);
+        assertEquals(getFileContentsAsString("test_yaml_translation_en_US"), translatedYamlStr);
+    }
+
+    @Test
+    public void testJsonFormTranslationShouldReturnUntranslatedForm() {
+        Locale.setDefault(new Locale("id"));
+        String interpolatedJsonForm = getFileContentsAsString("test_form_translation_interpolated_missing_translations");
+        assertEquals(interpolatedJsonForm, NativeFormLangUtils.getTranslatedString(interpolatedJsonForm));
+    }
+
+    @Test
+    public void testYamlFileTranslationShouldReturnUntranslatedYamlFile() throws IOException {
+        Context context = mockAssetManager("test_yaml_translation_interpolated_missing_translations");
+        Locale.setDefault(new Locale("en", "US"));
+        String translatedYamlStr = getTranslatedYamlFile("file_name", context);
+        assertEquals(getFileContentsAsString("test_yaml_translation_interpolated_missing_translations"), translatedYamlStr);
+    }
+
+    private Context mockAssetManager(String yamlFilePath) throws IOException {
+        Context context = mock(Context.class);
+        AssetManager assetManager = mock(AssetManager.class);
+        doReturn(getTestResource(yamlFilePath))
+                .when(assetManager)
+                .open(eq("file_name"));
+        doReturn(assetManager).when(context).getAssets();
+        return context;
+    }
+
+    private InputStream getTestResource(String filePath) {
+        return getClass().getClassLoader().getResourceAsStream(filePath);
+    }
+
+    private String getFileContentsAsString(String filePath) {
+        return convertStreamToString(getTestResource(filePath));
+    }
+}

android-json-form-wizard/src/test/resources/form_strings_en_US.properties

@@ -0,0 +1,16 @@
+step1.title = New client record
+step1.previous_label = SAVE AND EXIT
+step1.submit_label = SAVE
+step1.patient_name_label.text = Name
+step1.sex.label = Gender
+step1.sex.options.Female.text = Female
+step1.sex.options.Male.text = Male
+step1.sex.v_required.err = Please specify gender
+step1.patient_dob.hint = Patient's date of birth
+step1.patient_dob.duration.label = Age
+step1.patient_occupation_label.text = Occupation
+step1.been_treated.label = Has been treated for malaria in the past 3 months?
+step1.been_treated.options.Yes.text = Yes
+step1.been_treated.options.No.text = No
+step1.been_treated.options.not_answered.text = Not Answered
+step1.been_treated.v_required.err = Has the patient been treated for malaria in the past 3 months?

android-json-form-wizard/src/test/resources/form_strings_in.properties

@@ -0,0 +1,16 @@
+step1.title = Data Pasien Baru
+step1.previous_label = SIMPAN DAN KELUAR
+step1.submit_label = SIMPAN
+step1.patient_name_label.text = Nama
+step1.sex.label = Jenis kelamin pasien
+step1.sex.options.Female.text = Perempuan
+step1.sex.options.Male.text = Laki-laki
+step1.sex.v_required.err = Silakan sebutkan jenis kelamin
+step1.patient_dob.hint = Tanggal lahir pasien
+step1.patient_dob.duration.label = Usia
+step1.patient_occupation_label.text = Pekerjaan pasien
+step1.been_treated.label = Pernah dirawat karena Malaria dalam 3 bulan terakhir?
+step1.been_treated.options.Yes.text = Ya
+step1.been_treated.options.No.text = Tidak
+step1.been_treated.options.not_answered.text = Tidak dijawab
+step1.been_treated.v_required.err = Pernahkah pasien dirawat karena malaria dalam 3 bulan terakhir?