1 files changed, 114 insertions, 0 deletions
diff --git a/src/location-geofile.c b/src/location-geofile.c
new file mode 100644
index 0000000..62d6b26
--- /dev/null
+++ b/src/location-geofile.c
@@ -0,0 +1,114 @@
+/*-
+ * redshift-ng - Automatically adjust display colour temperature according the Sun
+ * 
+ * Copyright (c) 2009-2018        Jon Lund Steffensen <jonlst@gmail.com>
+ * Copyright (c) 2014-2016, 2025  Mattias Andrée <m@maandree.se>
+ * 
+ * redshift-ng 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-ng 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-ng.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "common.h"
+
+
+struct location_state {
+	/**
+	 * The loaded location
+	 */
+	struct location location;
+
+	/**
+	 * File to read location from, `NULL` for default
+	 */
+	char *file;
+};
+
+
+static int
+geofile_create(struct location_state **state_out)
+{
+	*state_out = emalloc(sizeof(**state_out));
+	(*state_out)->file = NULL;
+	return 0;
+}
+
+
+GCC_ONLY(__attribute__((__pure__)))
+static int
+geofile_start(struct location_state *state)
+{
+	struct libgeome_data data = {.requested_data = LIBGEOME_DATUM_LATITUDE | LIBGEOME_DATUM_LONGITUDE};
+	struct libgeome_context ctx;
+	int r;
+	libgeome_basic_context(&ctx, argv0);
+	r = libgeome_get_from_file(&ctx, &data, state->file);
+	free(state->file);
+	state->file = NULL;
+	if (r || data.requested_data != (LIBGEOME_DATUM_LATITUDE | LIBGEOME_DATUM_LONGITUDE))
+		return -1;
+	state->location.latitude = data.latitude;
+	state->location.longitude = data.longitude;
+	return 0;
+}
+
+
+static void
+geofile_free(struct location_state *state)
+{
+	free(state->file);
+	free(state);
+}
+
+
+static void
+geofile_print_help(void)
+{
+	printf(_("Specify location via file.\n"));
+	printf("\n");
+
+	printf("  file=%s   %s\n", _("FILE  "), _("File to read location from (empty for default)"));
+	printf("\n");
+}
+
+
+static int
+geofile_set_option(struct location_state *state, const char *key, const char *value)
+{
+	if (!strcasecmp(key, "file")) {
+		free(state->file);
+		state->file = *value ? estrdup(value) : NULL;
+		return 0;
+	} else {
+		weprintf(_("Unknown provider parameter: `%s'."), key);
+		return -1;
+	}
+}
+
+
+static int
+geofile_get_fd(struct location_state *state)
+{
+	(void) state;
+	return -1;
+}
+
+
+static int
+geofile_fetch(struct location_state *state, struct location *location_out, int *available_out)
+{
+	*location_out = state->location;
+	*available_out = 1;
+	return 0;
+}
+
+
+const struct location_provider geofile_location_provider = LOCATION_PROVIDER_INIT("geofile", geofile);