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nsxivoptions.c

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1/* Copyright 2011-2020 Bert Muennich
2 * Copyright 2021-2022 nsxiv contributors
3 *
4 * This file is a part of nsxiv.
5 *
6 * nsxiv is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published
8 * by the Free Software Foundation; either version 2 of the License,
9 * or (at your option) any later version.
10 *
11 * nsxiv is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with nsxiv. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include "nsxiv.h"
21#include "version.h"
22
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <unistd.h>
27
28const opt_t *options;
29
30void print_usage(void)
31{
32 printf("usage: nsxiv [-abcfhiopqrtvZ0] [-A FRAMERATE] [-e WID] [-G GAMMA] "
33 "[-g GEOMETRY] [-N NAME] [-n NUM] [-S DELAY] [-s MODE] "
34 "[-z ZOOM] FILES...\n");
35}
36
37static void title_deprecation_notice(void)
38{
39 error(EXIT_FAILURE, 0, "\n"
40 "################################################################\n"
41 "# DEPRECATION NOTICE #\n"
42 "################################################################\n"
43 "# `-T` option has been deprecated in favour of `win-title`. #\n"
44 "# Please read the `WINDOW TITLE` section of the manpage for #\n"
45 "# more info. #\n"
46 "################################################################"
47 );
48}
49
50static void print_version(void)
51{
52 puts("nsxiv " VERSION);
53}
54
55void parse_options(int argc, char **argv)
56{
57 int n, opt;
58 char *end, *s;
59 const char *scalemodes = "dfFwh";
60 static opt_t _options;
61 options = &_options;
62
63 progname = strrchr(argv[0], '/');
64 progname = progname ? progname + 1 : argv[0];
65
66 _options.from_stdin = false;
67 _options.to_stdout = false;
68 _options.using_null = false;
69 _options.recursive = false;
70 _options.startnum = 0;
71
72 _options.scalemode = SCALE_DOWN;
73 _options.zoom = 1.0;
74 _options.animate = false;
75 _options.gamma = 0;
76 _options.slideshow = 0;
77 _options.framerate = 0;
78
79 _options.fullscreen = false;
80 _options.embed = 0;
81 _options.hide_bar = false;
82 _options.geometry = NULL;
83 _options.res_name = NULL;
84
85 _options.quiet = false;
86 _options.thumb_mode = false;
87 _options.clean_cache = false;
88 _options.private_mode = false;
89
90 while ((opt = getopt(argc, argv, "A:abce:fG:g:hin:N:opqrS:s:T:tvZz:0")) != -1) {
91 switch (opt) {
92 case '?':
93 print_usage();
94 exit(EXIT_FAILURE);
95 case 'A':
96 n = strtol(optarg, &end, 0);
97 if (*end != '\0' || n <= 0)
98 error(EXIT_FAILURE, 0, "Invalid argument for option -A: %s", optarg);
99 _options.framerate = n;
100 /* fall through */
101 case 'a':
102 _options.animate = true;
103 break;
104 case 'b':
105 _options.hide_bar = true;
106 break;
107 case 'c':
108 _options.clean_cache = true;
109 break;
110 case 'e':
111 n = strtol(optarg, &end, 0);
112 if (*end != '\0')
113 error(EXIT_FAILURE, 0, "Invalid argument for option -e: %s", optarg);
114 _options.embed = n;
115 break;
116 case 'f':
117 _options.fullscreen = true;
118 break;
119 case 'G':
120 n = strtol(optarg, &end, 0);
121 if (*end != '\0')
122 error(EXIT_FAILURE, 0, "Invalid argument for option -G: %s", optarg);
123 _options.gamma = n;
124 break;
125 case 'g':
126 _options.geometry = optarg;
127 break;
128 case 'h':
129 print_usage();
130 exit(EXIT_SUCCESS);
131 case 'i':
132 _options.from_stdin = true;
133 break;
134 case 'n':
135 n = strtol(optarg, &end, 0);
136 if (*end != '\0' || n <= 0)
137 error(EXIT_FAILURE, 0, "Invalid argument for option -n: %s", optarg);
138 _options.startnum = n - 1;
139 break;
140 case 'N':
141 _options.res_name = optarg;
142 break;
143 case 'o':
144 _options.to_stdout = true;
145 break;
146 case 'p':
147 _options.private_mode = true;
148 break;
149 case 'q':
150 _options.quiet = true;
151 break;
152 case 'r':
153 _options.recursive = true;
154 break;
155 case 'S':
156 n = strtof(optarg, &end) * 10;
157 if (*end != '\0' || n <= 0)
158 error(EXIT_FAILURE, 0, "Invalid argument for option -S: %s", optarg);
159 _options.slideshow = n;
160 break;
161 case 's':
162 s = strchr(scalemodes, optarg[0]);
163 if (s == NULL || *s == '\0' || strlen(optarg) != 1)
164 error(EXIT_FAILURE, 0, "Invalid argument for option -s: %s", optarg);
165 _options.scalemode = s - scalemodes;
166 break;
167 case 'T':
168 title_deprecation_notice(); /* TODO(v31): remove this option */
169 break;
170 case 't':
171 _options.thumb_mode = true;
172 break;
173 case 'v':
174 print_version();
175 exit(EXIT_SUCCESS);
176 case 'Z':
177 _options.scalemode = SCALE_ZOOM;
178 _options.zoom = 1.0;
179 break;
180 case 'z':
181 n = strtol(optarg, &end, 0);
182 if (*end != '\0' || n <= 0)
183 error(EXIT_FAILURE, 0, "Invalid argument for option -z: %s", optarg);
184 _options.scalemode = SCALE_ZOOM;
185 _options.zoom = (float) n / 100.0;
186 break;
187 case '0':
188 _options.using_null = true;
189 break;
190 }
191 }
192
193 _options.filenames = argv + optind;
194 _options.filecnt = argc - optind;
195
196 if (_options.filecnt == 1 && STREQ(_options.filenames[0], "-")) {
197 _options.filenames++;
198 _options.filecnt--;
199 _options.from_stdin = true;
200 }
201}