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281 lines
7.8 KiB
C
281 lines
7.8 KiB
C
/* Copyright 2011-2020 Bert Muennich
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* Copyright 2021-2023 nsxiv contributors
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*
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* This file is a part of nsxiv.
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*
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* nsxiv is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* nsxiv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with nsxiv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "nsxiv.h"
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#include "version.h"
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#define INCLUDE_OPTIONS_CONFIG
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#include "config.h"
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#include <assert.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define OPTPARSE_IMPLEMENTATION
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#define OPTPARSE_API static
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#pragma GCC diagnostic push /* also works on clang */
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#pragma GCC diagnostic ignored "-Wshadow"
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#pragma GCC diagnostic ignored "-Wunused-function"
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#include "optparse.h"
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#pragma GCC diagnostic pop
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const opt_t *options;
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void print_usage(void)
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{
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printf("usage: %s [-abcfhiopqrtvZ0] [-A FRAMERATE] [-e WID] [-G GAMMA] "
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"[-g GEOMETRY] [-N NAME] [-n NUM] [-S DELAY] [-s MODE] "
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"[-z ZOOM] FILES...\n",
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progname);
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}
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static void print_version(void)
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{
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printf("%s %s\n", progname, VERSION);
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fputs("features: "
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#if HAVE_INOTIFY
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"+inotify "
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#endif
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#if HAVE_LIBFONTS
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"+statusbar "
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#endif
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#if HAVE_LIBEXIF
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"+exif "
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#endif
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#if HAVE_IMLIB2_MULTI_FRAME
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"+multiframe "
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#endif
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"\n", stdout);
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}
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void parse_options(int argc, char **argv)
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{
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enum {
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/* ensure these can't be represented in a single byte in order
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* to avoid conflicts with short opts
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*/
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OPT_START = UCHAR_MAX,
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OPT_AA,
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OPT_AL,
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OPT_BG
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};
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static const struct optparse_long longopts[] = {
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{ "framerate", 'A', OPTPARSE_REQUIRED },
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{ "animate", 'a', OPTPARSE_NONE },
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{ "no-bar", 'b', OPTPARSE_NONE },
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{ "clean-cache", 'c', OPTPARSE_NONE },
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{ "embed", 'e', OPTPARSE_REQUIRED },
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{ "fullscreen", 'f', OPTPARSE_NONE },
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{ "gamma", 'G', OPTPARSE_REQUIRED },
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{ "geometry", 'g', OPTPARSE_REQUIRED },
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{ "help", 'h', OPTPARSE_NONE },
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{ "stdin", 'i', OPTPARSE_NONE },
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{ "class", 'N', OPTPARSE_REQUIRED },
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{ "start-at", 'n', OPTPARSE_REQUIRED },
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{ "stdout", 'o', OPTPARSE_NONE },
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{ "private", 'p', OPTPARSE_NONE },
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{ "quiet", 'q', OPTPARSE_NONE },
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{ "recursive", 'r', OPTPARSE_NONE },
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{ "ss-delay", 'S', OPTPARSE_REQUIRED },
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{ "scale-mode", 's', OPTPARSE_REQUIRED },
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{ "thumbnail", 't', OPTPARSE_NONE },
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{ "version", 'v', OPTPARSE_NONE },
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{ "zoom-100", 'Z', OPTPARSE_NONE },
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{ "zoom", 'z', OPTPARSE_REQUIRED },
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{ "null", '0', OPTPARSE_NONE },
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{ "anti-alias", OPT_AA, OPTPARSE_OPTIONAL },
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{ "alpha-layer", OPT_AL, OPTPARSE_OPTIONAL },
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/* TODO: document this when it's stable */
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{ "bg-cache", OPT_BG, OPTPARSE_OPTIONAL },
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{ 0 }, /* end */
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};
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long n, opt;
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float f;
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char *end, *s;
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struct optparse op;
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const char scalemodes[] = "dfFwh"; /* must be sorted according to scalemode_t */
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static opt_t _options;
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options = &_options;
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_options.from_stdin = false;
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_options.to_stdout = false;
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_options.using_null = false;
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_options.recursive = false;
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_options.startnum = 0;
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_options.scalemode = SCALE_DOWN;
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_options.zoom = 1.0;
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_options.anti_alias = ANTI_ALIAS;
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_options.alpha_layer = ALPHA_LAYER;
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_options.animate = false;
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_options.gamma = 0;
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_options.slideshow = 0;
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_options.framerate = 0;
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_options.fullscreen = false;
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_options.embed = 0;
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_options.hide_bar = false;
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_options.geometry = NULL;
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_options.res_name = NULL;
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_options.quiet = false;
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_options.thumb_mode = false;
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_options.clean_cache = false;
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_options.private_mode = false;
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_options.background_cache = false;
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if (argc > 0) {
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s = strrchr(argv[0], '/');
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progname = s != NULL && s[1] != '\0' ? s + 1 : argv[0];
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}
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optparse_init(&op, argv);
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while ((opt = optparse_long(&op, longopts, NULL)) != -1) {
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for (n = 0; n < (int)ARRLEN(longopts); ++n) { /* clang-tidy finds some non-sensical branch and thinks optarg == NULL is possible */
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if (opt == longopts[n].shortname && longopts[n].argtype == OPTPARSE_REQUIRED)
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assert(op.optarg != NULL);
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}
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switch (opt) {
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case '?':
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fprintf(stderr, "%s\n", op.errmsg);
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print_usage();
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exit(EXIT_FAILURE);
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case 'A':
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n = strtol(op.optarg, &end, 0);
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if (*end != '\0' || n <= 0 || n > INT_MAX)
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error(EXIT_FAILURE, 0, "Invalid framerate: %s", op.optarg);
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_options.framerate = n;
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/* fall through */
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case 'a':
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_options.animate = true;
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break;
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case 'b':
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_options.hide_bar = true;
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break;
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case 'c':
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_options.clean_cache = true;
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break;
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case 'e':
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n = strtol(op.optarg, &end, 0);
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if (*end != '\0')
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error(EXIT_FAILURE, 0, "Invalid window id: %s", op.optarg);
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_options.embed = n;
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break;
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case 'f':
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_options.fullscreen = true;
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break;
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case 'G':
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n = strtol(op.optarg, &end, 0);
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if (*end != '\0' || n < INT_MIN || n > INT_MAX)
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error(EXIT_FAILURE, 0, "Invalid gamma: %s", op.optarg);
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_options.gamma = n;
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break;
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case 'g':
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_options.geometry = op.optarg;
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break;
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case 'h':
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print_usage();
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exit(EXIT_SUCCESS);
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case 'i':
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_options.from_stdin = true;
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break;
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case 'n':
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n = strtol(op.optarg, &end, 0);
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if (*end != '\0' || n <= 0 || n > INT_MAX)
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error(EXIT_FAILURE, 0, "Invalid starting number: %s", op.optarg);
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_options.startnum = n - 1;
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break;
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case 'N':
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_options.res_name = op.optarg;
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break;
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case 'o':
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_options.to_stdout = true;
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break;
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case 'p':
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_options.private_mode = true;
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break;
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case 'q':
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_options.quiet = true;
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break;
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case 'r':
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_options.recursive = true;
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break;
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case 'S':
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f = strtof(op.optarg, &end) * 10.0f;
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if (*end != '\0' || f <= 0 || f >= (float)UINT_MAX)
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error(EXIT_FAILURE, 0, "Invalid slideshow delay: %s", op.optarg);
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_options.slideshow = (unsigned int)f;
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break;
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case 's':
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s = strchr(scalemodes, op.optarg[0]);
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if (s == NULL || *s == '\0' || strlen(op.optarg) != 1)
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error(EXIT_FAILURE, 0, "Invalid scale mode: %s", op.optarg);
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_options.scalemode = s - scalemodes;
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break;
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case 't':
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_options.thumb_mode = true;
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break;
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case 'v':
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print_version();
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exit(EXIT_SUCCESS);
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case 'Z':
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_options.scalemode = SCALE_ZOOM;
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_options.zoom = 1.0f;
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break;
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case 'z':
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n = strtol(op.optarg, &end, 0);
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if (*end != '\0' || n <= 0)
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error(EXIT_FAILURE, 0, "Invalid zoom level: %s", op.optarg);
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_options.scalemode = SCALE_ZOOM;
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_options.zoom = (float)n / 100.0f;
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break;
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case '0':
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_options.using_null = true;
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break;
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case OPT_AA:
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if (op.optarg != NULL && !STREQ(op.optarg, "no"))
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error(EXIT_FAILURE, 0, "Invalid argument for option --anti-alias: %s", op.optarg);
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_options.anti_alias = op.optarg == NULL;
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break;
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case OPT_AL:
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if (op.optarg != NULL && !STREQ(op.optarg, "no"))
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error(EXIT_FAILURE, 0, "Invalid argument for option --alpha-layer: %s", op.optarg);
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_options.alpha_layer = op.optarg == NULL;
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break;
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case OPT_BG:
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if (op.optarg != NULL && !STREQ(op.optarg, "no"))
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error(EXIT_FAILURE, 0, "Invalid argument for option --bg-cache: %s", op.optarg);
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_options.background_cache = op.optarg == NULL;
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break;
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}
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}
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_options.filenames = argv + op.optind;
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_options.filecnt = argc - op.optind;
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if (_options.filecnt == 1 && STREQ(_options.filenames[0], "-")) {
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_options.filenames++;
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_options.filecnt--;
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_options.from_stdin = true;
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}
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}
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