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nsxivoptions.c

180 lines · 4.4 KB · C

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