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/*-
* 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;
};
static int
timezone_create(struct location_state **state_out)
{
*state_out = emalloc(sizeof(**state_out));
return 0;
}
GCC_ONLY(__attribute__((__pure__)))
static int
timezone_start(struct location_state *state)
{
struct libgeome_data data;
struct libgeome_context ctx;
int r;
libgeome_basic_context(&ctx, argv0);
data.requested_data = LIBGEOME_DATUM_LATITUDE | LIBGEOME_DATUM_LONGITUDE;
r = libgeome_get_from_timezone(&ctx, &data);
if (r) {
data.requested_data = LIBGEOME_DATUM_LATITUDE | LIBGEOME_DATUM_LONGITUDE;
r = libgeome_get_from_time(&ctx, &data);
}
if (r || !(data.requested_data & LIBGEOME_DATUM_LONGITUDE))
return -1;
if (data.requested_data & LIBGEOME_DATUM_LATITUDE)
state->location.latitude = data.latitude;
else
state->location.latitude = 0;
state->location.longitude = data.longitude;
return 0;
}
static void
timezone_free(struct location_state *state)
{
free(state);
}
static void
timezone_print_help(void)
{
printf(_("Get rough location from timezone.\n"));
printf("\n");
}
static int
timezone_set_option(struct location_state *state, const char *key, const char *value)
{
(void) state;
(void) value;
weprintf(_("Unknown provider parameter: `%s'."), key);
return -1;
}
static int
timezone_get_fd(struct location_state *state)
{
(void) state;
return -1;
}
static int
timezone_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 timezone_location_provider = LOCATION_PROVIDER_INIT("timezone", timezone);
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