1 files changed, 118 insertions, 0 deletions
diff --git a/redshift/location-manual.c b/redshift/location-manual.c
new file mode 100644
index 0000000..2928f37
--- /dev/null
+++ b/redshift/location-manual.c
@@ -0,0 +1,118 @@
+/*-
+ * 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 specified location, any unspecified coordinate is set to NAN
+	 */
+	struct location location;
+};
+
+
+static int
+manual_create(struct location_state **state_out)
+{
+	*state_out = emalloc(sizeof(**state_out));
+	(*state_out)->location.latitude = FNAN;
+	(*state_out)->location.longitude = FNAN;
+	return 0;
+}
+
+
+GCC_ONLY(__attribute__((__pure__)))
+static int
+manual_start(struct location_state *state)
+{
+	if (isnan(state->location.latitude) || isnan(state->location.longitude))
+		eprintf(_("Latitude and longitude must be set."));
+	return 0;
+}
+
+
+static void
+manual_free(struct location_state *state)
+{
+	free(state);
+}
+
+
+static void
+manual_print_help(void)
+{
+	printf(_("Specify location manually.\n"));
+	printf("\n");
+
+	/* TRANSLATORS: "N" represents "cardinal"; right-pad with spaces to preserve display width */
+	printf("  lat=%s    %s\n", _("N     "), _("Latitude"));
+	printf("  lon=%s    %s\n", _("N     "), _("Longitude"));
+	printf("\n");
+
+	printf(_("Both values are expected to be floating point numbers,\n"
+	         "negative values representing west / south, respectively.\n"));
+	printf("\n");
+}
+
+
+static int
+manual_set_option(struct location_state *state, const char *key, const char *value)
+{
+	char *end;
+	double v;
+
+	errno = 0;
+	v = strtod(value, &end);
+	if (errno || *end) {
+		weprintf(_("Malformed argument."));
+		return -1;
+	}
+
+	if (!strcasecmp(key, "lat")) {
+		state->location.latitude = v;
+	} else if (!strcasecmp(key, "lon")) {
+		state->location.longitude = v;
+	} else {
+		weprintf(_("Unknown provider parameter: `%s'."), key);
+		return -1;
+	}
+
+	return 0;
+}
+
+
+static int
+manual_get_fd(struct location_state *state)
+{
+	(void) state;
+	return -1;
+}
+
+
+static int
+manual_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 manual_location_provider = LOCATION_PROVIDER_INIT("manual", manual);