Add location provider that reads location from the gconf key associated

 with the GNOME Clock applet. The implementation is rather simplistic as
 it only reads the location once on init but that'll have to do for now.

1 files changed, 139 insertions, 0 deletions

diff --git a/src/location-gnome-clock.c b/src/location-gnome-clock.c
new file mode 100644
index 0000000..3136ff2
--- /dev/null
+++ b/src/location-gnome-clock.c
@@ -0,0 +1,139 @@
+/* location-gnome-clock.c -- GNOME Panel Clock location provider source
+   This file is part of Redshift.
+
+   Redshift is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Redshift is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Redshift.  If not, see <http://www.gnu.org/licenses/>.
+
+   Copyright (c) 2010  Jon Lund Steffensen <jonlst@gmail.com>
+*/
+
+#include <stdio.h>
+#include <string.h>
+
+#include <gconf/gconf-client.h>
+
+#include "location-gnome-clock.h"
+
+#ifdef ENABLE_NLS
+# include <libintl.h>
+# define _(s) gettext(s)
+#else
+# define _(s) s
+#endif
+
+
+int
+location_gnome_clock_init(location_gnome_clock_state_t *state, char *args)
+{
+	g_type_init();
+
+	GError *error = NULL;
+	GConfClient *client = gconf_client_get_default();
+
+	GSList *applets = gconf_client_all_dirs(client, "/apps/panel/applets",
+						&error);
+	if (error) {
+		fputs(_("Cannot list dirs in `/apps/panel/applets'.\n"),
+		      stderr);
+		g_object_unref(client);
+		return -1;
+	}
+
+	char *cities_key = NULL;
+	for (GSList *applet = applets; applet != NULL;
+	     applet = g_slist_next(applet)) {
+		char *path = applet->data;
+		if (cities_key == NULL) {
+			char *key = g_strdup_printf("%s/bonobo_iid", path);
+			char *bonobo_iid = gconf_client_get_string(client, key,
+								   &error);
+
+			if (!error && bonobo_iid != NULL) {
+				if (!strcmp(bonobo_iid,
+					    "OAFIID:GNOME_ClockApplet")) {
+					cities_key = g_strdup_printf(
+						"%s/prefs/cities", path);
+				}
+				g_free(bonobo_iid);
+			}
+
+			g_free(key);
+		}
+		g_free(path);
+	}
+
+	g_slist_free(applets);
+
+	if (cities_key == NULL) {
+		fputs(_("No clock applet was found.\n"), stderr);
+		g_object_unref(client);
+		return -1;
+	}
+
+	GSList *cities = gconf_client_get_list(client, cities_key,
+					       GCONF_VALUE_STRING, &error);
+	if (error) {
+		fprintf(stderr, _("Error reading city list: `%s'.\n"),
+			cities_key);
+		g_free(cities_key);
+		g_object_unref(client);
+		return -1;
+	}
+
+	g_free(cities_key);
+
+	char *current_city = NULL;
+	for (GSList *city = cities; city != NULL;
+	     city = g_slist_next(city)) {
+		char *city_spec = city->data;
+		char *c = strstr(city_spec, "current=\"true\"");
+		if (c) current_city = g_strdup(city_spec);
+		g_free(city->data);
+	}
+	g_slist_free(cities);
+
+	if (current_city == NULL) {
+		fputs(_("No city selected as current city.\n"), stderr);
+		return -1;
+	}
+
+	char *lat_str = strstr(current_city, "latitude=\"");
+	char *lon_str = strstr(current_city, "longitude=\"");
+	if (lat_str == NULL || lon_str == NULL) {
+		fputs(_("Location not specified for city.\n"), stderr);
+		return -1;
+	}
+
+	char *lat_num_str = lat_str + strlen("latitude=\"");
+	char *lon_num_str = lon_str + strlen("longitude=\"");
+
+	state->lat = g_ascii_strtod(lat_num_str, NULL);
+	state->lon = g_ascii_strtod(lon_num_str, NULL);
+
+	return 0;
+}
+
+void
+location_gnome_clock_free(location_gnome_clock_state_t *state)
+{
+}
+
+int
+location_gnome_clock_get_location(location_gnome_clock_state_t *state,
+				  float *lat, float *lon)
+{
+	*lat = state->lat;
+	*lon = state->lon;
+
+	return 0;
+}