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nsxivoptions.c

145 lines · 3.3 KB · C

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1/* sxiv: options.c
2 * Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 */
18
19#define _POSIX_C_SOURCE 200112L
20
21#include <stdlib.h>
22#include <string.h>
23#include <stdio.h>
24#include <unistd.h>
25
26#include "options.h"
27#include "util.h"
28
29#define _IMAGE_CONFIG
30#include "config.h"
31
32options_t _options;
33const options_t *options = (const options_t*) &_options;
34
35void print_usage() {
36 printf("usage: sxiv [-cdFfhpqrstvZ] [-g GEOMETRY] [-n NUM] "
37 "[-z ZOOM] FILES...\n");
38}
39
40void print_version() {
41 printf("sxiv %s - Simple X Image Viewer\n", VERSION);
42 printf("Additional features included (+) or not (-): %s, %s\n",
43#ifdef EXIF_SUPPORT
44 "+exif",
45#else
46 "-exif",
47#endif
48#ifdef GIF_SUPPORT
49 "+gif"
50#else
51 "-gif"
52#endif
53 );
54}
55
56void parse_options(int argc, char **argv) {
57 float z;
58 int n, opt;
59
60 _options.startnum = 0;
61
62 _options.scalemode = SCALE_MODE;
63 _options.zoom = 1.0;
64 _options.aa = 1;
65 _options.thumbnails = 0;
66
67 _options.fixed = 0;
68 _options.fullscreen = 0;
69 _options.geometry = NULL;
70
71 _options.quiet = 0;
72 _options.clean_cache = 0;
73 _options.recursive = 0;
74
75 while ((opt = getopt(argc, argv, "cdFfg:hn:pqrstvZz:")) != -1) {
76 switch (opt) {
77 case '?':
78 print_usage();
79 exit(1);
80 case 'c':
81 _options.clean_cache = 1;
82 break;
83 case 'd':
84 _options.scalemode = SCALE_DOWN;
85 break;
86 case 'F':
87 _options.fixed = 1;
88 break;
89 case 'f':
90 _options.fullscreen = 1;
91 break;
92 case 'g':
93 _options.geometry = optarg;
94 break;
95 case 'h':
96 print_usage();
97 exit(0);
98 case 'n':
99 if (!sscanf(optarg, "%d", &n) || n < 1) {
100 fprintf(stderr, "sxiv: invalid argument for option -n: %s\n",
101 optarg);
102 exit(1);
103 } else {
104 _options.startnum = n - 1;
105 }
106 break;
107 case 'p':
108 _options.aa = 0;
109 break;
110 case 'q':
111 _options.quiet = 1;
112 break;
113 case 'r':
114 _options.recursive = 1;
115 break;
116 case 's':
117 _options.scalemode = SCALE_FIT;
118 break;
119 case 't':
120 _options.thumbnails = 1;
121 break;
122 case 'v':
123 print_version();
124 exit(0);
125 case 'Z':
126 _options.scalemode = SCALE_ZOOM;
127 _options.zoom = 1.0;
128 break;
129 case 'z':
130 _options.scalemode = SCALE_ZOOM;
131 if (!sscanf(optarg, "%f", &z) || z < 0) {
132 fprintf(stderr, "sxiv: invalid argument for option -z: %s\n",
133 optarg);
134 exit(1);
135 }
136 _options.zoom = z / 100.0;
137 break;
138 }
139 }
140
141 _options.filenames = argv + optind;
142 _options.filecnt = argc - optind;
143 _options.from_stdin = _options.filecnt == 1 &&
144 strcmp(_options.filenames[0], "-") == 0;
145}