1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/* location-manual.c -- Manual 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 <stdlib.h>
#include <math.h>
#include <string.h>
#include <errno.h>
#include "location-manual.h"
#ifdef ENABLE_NLS
# include <libintl.h>
# define _(s) gettext(s)
#else
# define _(s) s
#endif
int
location_manual_init(location_manual_state_t *state, char *args)
{
state->lat = NAN;
state->lon = NAN;
/* Parse arguments. */
int count = 0;
while (args != NULL) {
if (count > 1) {
fputs(_("Too many arguments.\n"), stderr);
return -1;
}
char *next_arg = strchr(args, ':');
if (next_arg != NULL) *(next_arg++) = '\0';
/* Parse float value */
char *end;
errno = 0;
float value = strtof(args, &end);
if (errno != 0 || *end != '\0') {
fputs(_("Malformed argument.\n"), stderr);
return -1;
}
switch (count) {
case 0: state->lat = value; break;
case 1: state->lon = value; break;
}
args = next_arg;
count += 1;
}
/* Latitude and longitude must be set */
if (isnan(state->lat) || isnan(state->lon)) {
fputs(_("Latitude and longitude must be set.\n"), stderr);
exit(EXIT_FAILURE);
}
return 0;
}
void
location_manual_free(location_manual_state_t *state)
{
}
int
location_manual_get_location(location_manual_state_t *state, float *lat,
float *lon)
{
*lat = state->lat;
*lon = state->lon;
return 0;
}
|
