Java 1.6+ compatibility (at least) instead of 1.8+ only
[jvcard.git] / src / be / nikiroo / jvcard / i18n / Trans.java
index 3ea95625ca177182d75a0ddce0be5fcd68cd1a63..0b2af474b5a3fafe24d6439f45dab234833461fb 100644 (file)
 package be.nikiroo.jvcard.i18n;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.lang.reflect.Field;
+import java.util.Locale;
+import java.util.ResourceBundle;
+
+import be.nikiroo.jvcard.resources.Bundles;
+import be.nikiroo.jvcard.tui.UiColors;
+
+import com.googlecode.lanterna.input.KeyStroke;
 
 /**
- * This class manages the translation of {@link Trans#StringId}s into
+ * This class manages the translation of {@link Trans.StringId}s into
  * user-understandable text.
  * 
  * @author niki
  * 
  */
 public class Trans {
-       static private Object lock = new Object();
-       static private Trans instance = null;
+       ResourceBundle map;
 
-       private Map<StringId, String> map = null;
+       /**
+        * Create a translation service with the default language.
+        */
+       public Trans() {
+               setLanguage(null);
+       }
 
        /**
-        * An enum representing information to be translated to the user.
+        * Create a translation service for the given language. (Will fall back to
+        * the default one i not found.)
         * 
-        * @author niki
+        * @param language
+        *            the language to use
+        */
+       public Trans(String language) {
+               setLanguage(language);
+       }
+
+       /**
+        * Translate the given {@link StringId} into user text.
+        * 
+        * @param stringId
+        *            the ID to translate
         * 
+        * @return the translated text
         */
-       public enum StringId {
-               KEY_ACTION_BACK, KEY_ACTION_HELP, KEY_ACTION_VIEW_CONTACT, KEY_ACTION_EDIT_CONTACT, KEY_ACTION_SWITCH_FORMAT, TITLE, NULL;
+       public String trans(StringId stringId) {
+               StringId id = stringId;
+               if (!UiColors.getInstance().isUnicode()) {
+                       try {
+                               id = StringId.valueOf(stringId.name() + "_NOUTF");
+                       } catch (IllegalArgumentException iae) {
+                               // no special _NOUTF version found
+                       }
+               }
 
-               public String trans() {
-                       return Trans.getInstance().trans(this);
+               if (id == StringId.NULL) {
+                       return "";
+               }
+
+               if (id == StringId.DUMMY) {
+                       return "[dummy]";
                }
-       };
+
+               if (map.containsKey(id.name())) {
+                       return map.getString(id.name());
+               }
+
+               return id.toString();
+       }
 
        /**
-        * Get the (unique) instance of this class.
+        * Translate the given {@link KeyStroke} into a user text {@link String} of
+        * size 3.
         * 
-        * @return the (unique) instance
+        * @param key
+        *            the key to translate
+        * 
+        * @return the translated text
         */
-       static public Trans getInstance() {
-               synchronized (lock) {
-                       if (instance == null)
-                               instance = new Trans();
+       public String trans(KeyStroke key) {
+               String keyTrans = "";
+
+               switch (key.getKeyType()) {
+               case Enter:
+                       if (UiColors.getInstance().isUnicode())
+                               keyTrans = " ⤶ ";
+                       else
+                               keyTrans = trans(StringId.KEY_ENTER);
+                       break;
+               case Tab:
+                       if (UiColors.getInstance().isUnicode())
+                               keyTrans = " ↹ ";
+                       else
+                               keyTrans = trans(StringId.KEY_TAB);
+
+                       break;
+               case Character:
+                       keyTrans = " " + key.getCharacter() + " ";
+                       break;
+               default:
+                       keyTrans = "" + key.getKeyType();
+                       int width = 3;
+                       if (keyTrans.length() > width) {
+                               keyTrans = keyTrans.substring(0, width);
+                       } else if (keyTrans.length() < width) {
+                               keyTrans = keyTrans
+                                               + new String(new char[width - keyTrans.length()])
+                                                               .replace('\0', ' ');
+                       }
+                       break;
                }
 
-               return instance;
+               return keyTrans;
        }
 
-       public String trans(StringId stringId) {
-               if (map.containsKey(stringId)) {
-                       return map.get(stringId);
+       /**
+        * Initialise the translation mappings for the given language.
+        * 
+        * @param lang
+        *            the language to initialise
+        */
+       private void setLanguage(String lang) {
+               Locale locale = null;
+
+               if (lang == null) {
+                       locale = Locale.getDefault();
+               } else {
+                       locale = new Locale(lang);
                }
 
-               return stringId.toString();
+               map = Bundles.getBundle("resources", locale);
        }
 
-       private Trans() {
-               map = new HashMap<StringId, String>();
+       /**
+        * Create/update the translation .properties files. Will use the most likely
+        * candidate as base if the file does not already exists (for instance,
+        * "en_US" will use "en" as a base).
+        * 
+        * @param args
+        *            the path where the .properties files are, then the languages
+        *            to create/update
+        * 
+        * @throws IOException
+        *             in case of IO errors
+        */
+       public static void main(String[] args) throws IOException {
+               String path = args[0];
+               for (int i = 1; i < args.length; i++) {
+                       Locale locale = new Locale(args[i].replaceAll("_", "-"));
+                       String code = locale.toString();
+                       Trans trans = new Trans(code);
 
-               // TODO: get from a file instead?
-               map.put(StringId.NULL, "");
-               map.put(StringId.KEY_ACTION_BACK, "Back");
-               map.put(StringId.TITLE, "[ jVcard: version 0.9 ]");
-               map.put(StringId.KEY_ACTION_VIEW_CONTACT, "view");
-               map.put(StringId.KEY_ACTION_EDIT_CONTACT, "edit");
-               map.put(StringId.KEY_ACTION_SWITCH_FORMAT, "Change view");      
+                       File file = null;
+                       if (code.length() > 0) {
+                               file = new File(path + "resources_" + code + ".properties");
+                       } else {
+                               // Default properties file:
+                               file = new File(path + "resources.properties");
+                       }
+
+                       BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
+                                       new FileOutputStream(file), "UTF-8"));
+
+                       String name = locale.getDisplayCountry(locale);
+                       if (name.length() == 0)
+                               name = locale.getDisplayLanguage(locale);
+                       if (name.length() == 0)
+                               name = "default";
+
+                       if (code.length() > 0) {
+                               name = name + " (" + code + ")";
+                       }
+
+                       writer.append("# " + name + " translation file (UTF-8)\n");
+                       writer.append("# \n");
+                       writer.append("# Note that any key can be doubled with a _NOUTF suffix\n");
+                       writer.append("# to use when the flag --noutf is passed\n");
+                       writer.append("# \n");
+                       writer.append("# Also, the comments always refer to the key below them.\n");
+                       writer.append("# \n");
+                       writer.append("\n");
+
+                       for (Field field : StringId.class.getDeclaredFields()) {
+                               Meta meta = field.getAnnotation(Meta.class);
+                               if (meta != null) {
+                                       StringId id = StringId.valueOf(field.getName());
+                                       String info = getMetaInfo(meta);
+                                       if (info != null) {
+                                               writer.append(info);
+                                               writer.append("\n");
+                                       }
+
+                                       writer.append(id.name());
+                                       writer.append(" = ");
+                                       if (!trans.trans(id).equals(id.name()))
+                                               writer.append(trans.trans(id));
+                                       writer.append("\n");
+                               }
+                       }
+
+                       writer.close();
+               }
+       }
+
+       /**
+        * Return formated, display-able information from the {@link Meta} field
+        * given. Each line will always starts with a "#" character.
+        * 
+        * @param meta
+        *            the {@link Meta} field
+        * 
+        * @return the information to display or NULL if none
+        */
+       private static String getMetaInfo(Meta meta) {
+               String what = meta.what();
+               String where = meta.where();
+               String format = meta.format();
+               String info = meta.info();
+
+               int opt = what.length() + where.length() + format.length();
+               if (opt + info.length() == 0)
+                       return null;
+
+               StringBuilder builder = new StringBuilder();
+               builder.append("# ");
+
+               if (opt > 0) {
+                       builder.append("(");
+                       if (what.length() > 0) {
+                               builder.append("WHAT: " + what);
+                               if (where.length() + format.length() > 0)
+                                       builder.append(", ");
+                       }
+
+                       if (where.length() > 0) {
+                               builder.append("WHERE: " + where);
+                               if (format.length() > 0)
+                                       builder.append(", ");
+                       }
+
+                       if (format.length() > 0) {
+                               builder.append("FORMAT: " + format);
+                       }
+
+                       builder.append(")\n# ");
+               }
+
+               builder.append(info);
+
+               return builder.toString();
        }
+
+       /**
+        * The enum representing textual information to be translated to the user as
+        * a key.
+        * 
+        * Note that each key that should be translated MUST be annotated with a
+        * {@link Meta} annotation.
+        * 
+        * @author niki
+        * 
+        */
+       public enum StringId {
+               DUMMY, // <-- TODO : remove
+               NULL, // Special usage, no annotations so it is not visible in
+                               // .properties files
+               @Meta(what = "a key to press", where = "action keys", format = "MUST BE 3 chars long", info = "Tab key")
+               KEY_TAB, // keys
+               @Meta(what = "a key to press", where = "action keys", format = "MUST BE 3 chars long", info = "Enter key")
+               KEY_ENTER, //
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_BACK, // MainWindow
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_HELP, //
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_VIEW_CARD, // FileList
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_VIEW_CONTACT, // ContactList
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_EDIT_CONTACT, //
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_SAVE_CARD, //
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_DELETE_CONTACT, //
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_SEARCH, //
+               @Meta(what = "", where = "", format = "", info = "we could use: ' ', ┃, │...")
+               DEAULT_FIELD_SEPARATOR, // MainContentList
+               @Meta(what = "", where = "", format = "", info = "")
+               DEAULT_FIELD_SEPARATOR_NOUTF, //
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_INVERT, // ContactDetails
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_FULLSCREEN, //
+               @Meta(what = "", where = "", format = "", info = "")
+               KEY_ACTION_SWITCH_FORMAT, // multi-usage
+       };
 }