[gnome-software/gnome-3-16] extras: Show the language name instead of raw :lang= search string

[Kalev Lember <klember src gnome org>]

commit 2d2e877ee8de1e59f538f7daeddfbedd2a5652ac
Author: Kalev Lember <kalevlember gmail com>
Date:   Mon May 18 12:56:22 2015 +0200

    extras: Show the language name instead of raw :lang= search string
    
    When searching for fontconfig resources, parse the passed in :lang=
    search string and show the localised language name in user visible
    places, instead of the raw search string.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749485

 src/gs-shell-extras.c |   52 ++++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 51 insertions(+), 1 deletions(-)
---
diff --git a/src/gs-shell-extras.c b/src/gs-shell-extras.c
index c8ae101..1a31d89 100644
--- a/src/gs-shell-extras.c
+++ b/src/gs-shell-extras.c
@@ -26,6 +26,7 @@
 #include "gs-app.h"
 #include "gs-app-row.h"
 #include "gs-cleanup.h"
+#include "gs-language.h"
 #include "gs-markdown.h"
 #include "gs-shell.h"
 #include "gs-utils.h"
@@ -61,6 +62,7 @@ struct GsShellExtrasPrivate
        GtkSizeGroup             *sizegroup_name;
        GPtrArray                *array_search_data;
        GsShellExtrasMode         mode;
+       GsLanguage               *language;
        GsVendor                 *vendor;
        guint                     pending_search_cnt;
 
@@ -819,6 +821,45 @@ gs_shell_extras_search_mime_types (GsShellExtras *shell_extras, gchar **mime_typ
        gs_shell_extras_load (shell_extras, array_search_data);
 }
 
+static gchar *
+font_tag_to_lang (const gchar *tag)
+{
+       if (g_str_has_prefix (tag, ":lang="))
+               return g_strdup (tag + 6);
+
+       return NULL;
+}
+
+static gchar *
+gs_shell_extras_font_tag_to_localised_name (GsShellExtras *shell_extras, const gchar *tag)
+{
+       GsShellExtrasPrivate *priv = shell_extras->priv;
+       gchar *name;
+       _cleanup_free_ gchar *lang = NULL;
+       _cleanup_free_ gchar *language = NULL;
+
+       /* use fontconfig to get the language code */
+       lang = font_tag_to_lang (tag);
+       if (lang == NULL) {
+               g_warning ("Could not parse language tag '%s'", tag);
+               return NULL;
+       }
+
+       /* convert to localisable name */
+       language = gs_language_iso639_to_language (priv->language, lang);
+       if (language == NULL) {
+               g_warning ("Could not match language code '%s' to an ISO639 language", lang);
+               return NULL;
+       }
+
+       /* get translation, or return untranslated string */
+       name = g_strdup (dgettext("iso_639", language));
+       if (name == NULL)
+               name = g_strdup (language);
+
+       return name;
+}
+
 static void
 gs_shell_extras_search_fontconfig_resources (GsShellExtras *shell_extras, gchar **resources)
 {
@@ -830,7 +871,7 @@ gs_shell_extras_search_fontconfig_resources (GsShellExtras *shell_extras, gchar
                SearchData *search_data;
 
                search_data = g_slice_new0 (SearchData);
-               search_data->title = g_strdup (resources[i]); // XXX: Parse
+               search_data->title = gs_shell_extras_font_tag_to_localised_name (shell_extras, resources[i]);
                search_data->search = g_strdup (resources[i]);
                search_data->url_not_found = gs_vendor_get_not_found_url (priv->vendor, 
GS_VENDOR_URL_TYPE_FONT);
                search_data->shell_extras = g_object_ref (shell_extras);
@@ -1131,6 +1172,7 @@ gs_shell_extras_finalize (GObject *object)
 
        g_object_unref (priv->sizegroup_image);
        g_object_unref (priv->sizegroup_name);
+       g_object_unref (priv->language);
        g_object_unref (priv->vendor);
        g_object_unref (priv->builder);
        g_object_unref (priv->plugin_loader);
@@ -1143,6 +1185,8 @@ gs_shell_extras_finalize (GObject *object)
 static void
 gs_shell_extras_init (GsShellExtras *shell_extras)
 {
+       _cleanup_error_free_ GError *error = NULL;
+
        gtk_widget_init_template (GTK_WIDGET (shell_extras));
 
        shell_extras->priv = gs_shell_extras_get_instance_private (shell_extras);
@@ -1150,6 +1194,12 @@ gs_shell_extras_init (GsShellExtras *shell_extras)
        shell_extras->priv->sizegroup_image = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
        shell_extras->priv->sizegroup_name = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
        shell_extras->priv->vendor = gs_vendor_new ();
+
+       /* map ISO639 to language names */
+       shell_extras->priv->language = gs_language_new ();
+       gs_language_populate (shell_extras->priv->language, &error);
+       if (error != NULL)
+               g_warning ("Failed to map ISO639 to language names: %s", error->message);
 }
 
 static void