Implement code for internationalization

nautilus/mat2.py

@@ -16,6 +16,7 @@ import queue
 import threading
 from typing import Tuple, Optional, List
 from urllib.parse import unquote
+import gettext
 
 import gi
 gi.require_version('Nautilus', '3.0')
@@ -25,6 +26,8 @@ from gi.repository import Nautilus, GObject, Gtk, Gio, GLib, GdkPixbuf
 
 from libmat2 import parser_factory
 
+_ = gettext.gettext
+
 
 def _remove_metadata(fpath) -> Tuple[bool, Optional[str]]:
     """ This is a simple wrapper around libmat2, because it's
@@ -51,11 +54,11 @@ class Mat2Extension(GObject.GObject, Nautilus.MenuProvider, Nautilus.LocationWid
         self.infobar.set_show_close_button(True)
         self.infobar_hbox = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)
 
-        btn = Gtk.Button("Show")
+        btn = Gtk.Button(_("Show"))
         btn.connect("clicked", self.__cb_show_failed)
         self.infobar_hbox.pack_end(btn, False, False, 0)
 
-        infobar_msg = Gtk.Label("Failed to clean some items")
+        infobar_msg = Gtk.Label(_("Failed to clean some items"))
         self.infobar_hbox.pack_start(infobar_msg, False, False, 0)
 
         self.infobar.get_content_area().pack_start(self.infobar_hbox, True, True, 0)
@@ -90,9 +93,9 @@ class Mat2Extension(GObject.GObject, Nautilus.MenuProvider, Nautilus.LocationWid
         window = Gtk.Window()
         headerbar = Gtk.HeaderBar()
         window.set_titlebar(headerbar)
-        headerbar.props.title = "Metadata removal failed"
+        headerbar.props.title = _("Metadata removal failed")
 
-        close_buton = Gtk.Button("Close")
+        close_buton = Gtk.Button(_("Close"))
         close_buton.connect("clicked", lambda _: window.close())
         headerbar.pack_end(close_buton)
 
@@ -107,9 +110,9 @@ class Mat2Extension(GObject.GObject, Nautilus.MenuProvider, Nautilus.LocationWid
         """ Validate if a given file FileInfo `fileinfo` can be processed.
         Returns a boolean, and a textreason why"""
         if fileinfo.get_uri_scheme() != "file" or fileinfo.is_directory():
-            return False, "Not a file"
+            return False, _("Not a file")
         elif not fileinfo.can_write():
-            return False, "Not writeable"
+            return False, _("Not writeable")
         return True, ""
 
     def __create_treeview(self) -> Gtk.TreeView:
@@ -120,7 +123,7 @@ class Mat2Extension(GObject.GObject, Nautilus.MenuProvider, Nautilus.LocationWid
         column_pixbuf = Gtk.TreeViewColumn("Icon", renderer_pixbuf, pixbuf=0)
         treeview.append_column(column_pixbuf)
 
-        for idx, name in enumerate(['File', 'Reason']):
+        for idx, name in enumerate([_('File'), _('Reason')]):
             renderer_text = Gtk.CellRendererText()
             column_text = Gtk.TreeViewColumn(name, renderer_text, text=idx+1)
             treeview.append_column(column_text)
@@ -180,7 +183,7 @@ class Mat2Extension(GObject.GObject, Nautilus.MenuProvider, Nautilus.LocationWid
             return False
 
         progressbar.pulse()
-        progressbar.set_text("Cleaning %s" % fname)
+        progressbar.set_text(_("Cleaning %s") % fname)
         progressbar.show_all()
         self.infobar_hbox.show_all()
         self.infobar.show_all()
@@ -202,7 +205,7 @@ class Mat2Extension(GObject.GObject, Nautilus.MenuProvider, Nautilus.LocationWid
             fpath = unquote(fileinfo.get_uri()[7:])  # `len('file://') = 7`
             success, mtype = _remove_metadata(fpath)
             if not success:
-                self.failed_items.append((fname, mtype, 'Unsupported/invalid'))
+                self.failed_items.append((fname, mtype, _('Unsupported/invalid')))
         processing_queue.put(None)  # signal that we processed all the files
         return True
 
@@ -236,8 +239,8 @@ class Mat2Extension(GObject.GObject, Nautilus.MenuProvider, Nautilus.LocationWid
 
         item = Nautilus.MenuItem(
             name="mat2::Remove_metadata",
-            label="Remove metadata",
-            tip="Remove metadata"
+            label=_("Remove metadata"),
+            tip=_("Remove metadata")
         )
         item.connect('activate', self.__cb_menu_activate, files)