2 * mdp -- A command-line based markdown presentation tool.
3 * Copyright (C) 2018 Michael Goehler
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program 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.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include <locale.h> // setlocale
30 fprintf(stderr, "%s", "Usage: mdp [OPTION]... [FILE]\n");
31 fprintf(stderr, "%s", "A command-line based markdown presentation tool.\n\n");
32 fprintf(stderr, "%s", " -d, --debug enable debug messages on STDERR\n");
33 fprintf(stderr, "%s", " add it multiple times to increases debug level\n");
34 fprintf(stderr, "%s", " -e, --expand enable character entity expansion\n");
35 fprintf(stderr, "%s", " -h, --help display this help and exit\n");
36 fprintf(stderr, "%s", " -s, --noslidenum do not show slide number at the bottom\n");
37 fprintf(stderr, "%s", " -v, --version display the version number and license\n");
38 fprintf(stderr, "%s", " -x, --noslidemax show slide number, but not total number of slides\n");
39 fprintf(stderr, "%s", "\nWith no FILE, or when FILE is -, read standard input.\n\n");
44 printf("mdp %d.%d.%d\n", MDP_VER_MAJOR, MDP_VER_MINOR, MDP_VER_REVISION);
45 printf("Copyright (C) 2018 Michael Goehler\n");
46 printf("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
47 printf("This is free software: you are free to change and redistribute it.\n");
48 printf("There is NO WARRANTY, to the extent permitted by law.\n");
49 printf("\nWritten by Michael Goehler and others, see <https://github.com/visit1985/mdp/blob/master/AUTHORS>.\n");
53 int main(int argc, char *argv[]) {
54 int noexpand = 1; // disable character entity expansion
55 int reload = 0; // reload page N (0 means no reload)
56 int noreload = 1; // reload disabled until we know input is a file
57 int slidenum = 2; // 0:don't show; 1:show #; 2:show #/#
59 // define command-line options
60 struct option longopts[] = {
61 { "debug", no_argument, 0, 'd' },
62 { "expand", no_argument, 0, 'e' },
63 { "help", no_argument, 0, 'h' },
64 { "version", no_argument, 0, 'v' },
65 { "noslidenum", no_argument, 0, 's' },
66 { "noslidemax", no_argument, 0, 'x' },
70 // parse command-line options
72 while ((opt = getopt_long(argc, argv, ":defhitvsxc", longopts, NULL)) != -1) {
74 case 'd': debug += 1; break;
75 case 'e': noexpand = 0; break;
76 case 'h': usage(); break;
77 case 'v': version(); break;
78 case 's': slidenum = 0; break;
79 case 'x': slidenum = 1; break;
80 case ':': fprintf(stderr, "%s: '%c' requires an argument\n", argv[0], optopt); usage(); break;
82 default : fprintf(stderr, "%s: option '%c' is invalid\n", argv[0], optopt); usage(); break;
86 // set locale to that of the environment, so that ncurses properly renders
87 // UTF-8 characters if the system supports it
88 setlocale(LC_CTYPE, "");
93 // open file or set input to STDIN
99 } while(++optind < argc);
101 if(!strcmp(file, "-")) {
104 input = fopen(file,"r");
106 fprintf(stderr, "%s: %s: %s\n", argv[0], file, strerror(errno));
109 // enable reload because input is a file
119 // reopen input file on reload
120 if(noreload == 0 && reload > 0) {
122 input = fopen(file,"r");
124 fprintf(stderr, "%s: %s: %s\n", argv[0], file, strerror(errno));
128 fprintf(stderr, "%s: %s\n", argv[0], "no input file");
133 // load deck object from input
135 deck = markdown_load(input, noexpand);
140 // replace stdin with current tty if input was a pipe
141 // if input was a pipe reload is disabled, so we simply check that
143 input = freopen("/dev/tty", "rw", stdin);
145 fprintf(stderr, "%s: %s: %s\n", argv[0], "/dev/tty", strerror(errno));
151 markdown_debug(deck, debug);
154 reload = ncurses_display(deck, reload, noreload, slidenum);
158 // reload if supported and requested
159 } while(noreload == 0 && reload > 0);