[tepl] init: init i18n

[Sébastien Wilmet <swilmet src gnome org>]

commit a5d3c46102e0ac2101cbf6d61279a0df60e08ad0
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri May 8 16:51:00 2020 +0200

    init: init i18n
    
    When Amtk was part of the same git repo, amtk_init() took care of this,
    since it was the same GETTEXT_PACKAGE value.
    
    But now that Amtk is in a separate repo we need to initialize i18n in
    Tepl too.

 meson.build      |  2 ++
 tepl/tepl-init.c | 38 ++++++++++++++++++++++++++++++++++++--
 tepl/tepl-init.h |  1 +
 3 files changed, 39 insertions(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index 8748bdd..a5dd0c5 100644
--- a/meson.build
+++ b/meson.build
@@ -57,6 +57,8 @@ TEPL_DEPS = [TEPL_PUBLIC_DEPS, TEPL_PRIVATE_DEPS]
 config_data = configuration_data()
 GETTEXT_PACKAGE_NAME = 'tepl-' + TEPL_API_VERSION
 config_data.set_quoted('GETTEXT_PACKAGE', GETTEXT_PACKAGE_NAME)
+config_data.set_quoted('TEPL_LOCALEDIR', get_option('prefix') / get_option('localedir'))
+
 configure_file(
   output: 'config.h',
   configuration: config_data
diff --git a/tepl/tepl-init.c b/tepl/tepl-init.c
index 3f87ba2..9396961 100644
--- a/tepl/tepl-init.c
+++ b/tepl/tepl-init.c
@@ -2,12 +2,31 @@
  * SPDX-License-Identifier: LGPL-3.0-or-later
  */
 
+#include "config.h"
 #include "tepl-init.h"
+#include <glib/gi18n-lib.h>
 #include <amtk/amtk.h>
 #include <gtksourceview/gtksource.h>
 #include "tepl-abstract-factory.h"
 #include "tepl-metadata-manager.h"
 
+static gchar *
+get_locale_directory (void)
+{
+#ifdef G_OS_WIN32
+       gchar *base_dir;
+       gchar *locale_dir;
+
+       base_dir = g_win32_get_package_installation_directory_of_module (NULL);
+       locale_dir = g_build_filename (base_dir, "share", "locale", NULL);
+       g_free (base_dir);
+
+       return locale_dir;
+#else
+       return g_strdup (TEPL_LOCALEDIR);
+#endif
+}
+
 /**
  * tepl_init:
  *
@@ -23,8 +42,23 @@
 void
 tepl_init (void)
 {
-       amtk_init ();
-       gtk_source_init ();
+       static gboolean done = FALSE;
+
+       if (!done)
+       {
+               gchar *locale_dir;
+
+               amtk_init ();
+               gtk_source_init ();
+
+               locale_dir = get_locale_directory ();
+               bindtextdomain (GETTEXT_PACKAGE, locale_dir);
+               g_free (locale_dir);
+
+               bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+
+               done = TRUE;
+       }
 }
 
 /**
diff --git a/tepl/tepl-init.h b/tepl/tepl-init.h
index 1783b4f..e677aa6 100644
--- a/tepl/tepl-init.h
+++ b/tepl/tepl-init.h
@@ -16,6 +16,7 @@ G_BEGIN_DECLS
 
 _TEPL_EXTERN
 void   tepl_init               (void);
+
 _TEPL_EXTERN
 void   tepl_finalize           (void);