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nsxivoptions.c

159 lines · 3.6 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#define _POSIX_C_SOURCE 200112L
20#define _IMAGE_CONFIG
21
22#include <stdlib.h>
23#include <string.h>
24#include <stdio.h>
25#include <unistd.h>
26
27#include "options.h"
28#include "util.h"
29#include "config.h"
30
31options_t _options;
32const options_t *options = (const options_t*) &_options;
33
34void print_usage(void)
35{
36 printf("usage: sxiv [-bcdFfhioqrstvZ] [-g GEOMETRY] [-G GAMMA] [-n NUM] "
37 "[-N name] [-z ZOOM] FILES...\n");
38}
39
40void print_version(void)
41{
42 printf("sxiv %s - Simple X Image Viewer\n", VERSION);
43}
44
45void parse_options(int argc, char **argv)
46{
47 int opt, t, gamma;
48
49 _options.from_stdin = false;
50 _options.to_stdout = false;
51 _options.recursive = false;
52 _options.startnum = 0;
53
54 _options.scalemode = SCALE_MODE;
55 _options.zoom = 1.0;
56 _options.gamma = 0;
57
58 _options.fixed_win = false;
59 _options.fullscreen = false;
60 _options.hide_bar = false;
61 _options.geometry = NULL;
62 _options.res_name = NULL;
63
64 _options.quiet = false;
65 _options.thumb_mode = false;
66 _options.clean_cache = false;
67
68 while ((opt = getopt(argc, argv, "bcdFfg:G:hin:N:oqrstvZz:")) != -1) {
69 switch (opt) {
70 case '?':
71 print_usage();
72 exit(EXIT_FAILURE);
73 case 'b':
74 _options.hide_bar = true;
75 break;
76 case 'c':
77 _options.clean_cache = true;
78 break;
79 case 'd':
80 _options.scalemode = SCALE_DOWN;
81 break;
82 case 'F':
83 _options.fixed_win = true;
84 break;
85 case 'f':
86 _options.fullscreen = true;
87 break;
88 case 'g':
89 _options.geometry = optarg;
90 break;
91 case 'G':
92 if (sscanf(optarg, "%d", &gamma) <= 0) {
93 fprintf(stderr, "sxiv: invalid argument for option -G: %s\n",
94 optarg);
95 exit(EXIT_FAILURE);
96 }
97 _options.gamma = gamma;
98 break;
99 case 'h':
100 print_usage();
101 exit(EXIT_SUCCESS);
102 case 'i':
103 _options.from_stdin = true;
104 break;
105 case 'n':
106 if (sscanf(optarg, "%d", &t) <= 0 || t < 1) {
107 fprintf(stderr, "sxiv: invalid argument for option -n: %s\n",
108 optarg);
109 exit(EXIT_FAILURE);
110 } else {
111 _options.startnum = t - 1;
112 }
113 break;
114 case 'N':
115 _options.res_name = optarg;
116 break;
117 case 'o':
118 _options.to_stdout = true;
119 break;
120 case 'q':
121 _options.quiet = true;
122 break;
123 case 'r':
124 _options.recursive = true;
125 break;
126 case 's':
127 _options.scalemode = SCALE_FIT;
128 break;
129 case 't':
130 _options.thumb_mode = true;
131 break;
132 case 'v':
133 print_version();
134 exit(EXIT_SUCCESS);
135 case 'Z':
136 _options.scalemode = SCALE_ZOOM;
137 _options.zoom = 1.0;
138 break;
139 case 'z':
140 _options.scalemode = SCALE_ZOOM;
141 if (sscanf(optarg, "%d", &t) <= 0 || t <= 0) {
142 fprintf(stderr, "sxiv: invalid argument for option -z: %s\n",
143 optarg);
144 exit(EXIT_FAILURE);
145 }
146 _options.zoom = (float) t / 100.0;
147 break;
148 }
149 }
150
151 _options.filenames = argv + optind;
152 _options.filecnt = argc - optind;
153
154 if (_options.filecnt == 1 && STREQ(_options.filenames[0], "-")) {
155 _options.filenames++;
156 _options.filecnt--;
157 _options.from_stdin = true;
158 }
159}