/*
* mdp -- A command-line based markdown presentation tool.
* Copyright (C) 2018 Michael Goehler
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <errno.h>
#include <getopt.h>
#include <locale.h> // setlocale
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "main.h"
void usage() {
fprintf(stderr, "%s", "Usage: mdp [OPTION]... [FILE]\n");
fprintf(stderr, "%s", "A command-line based markdown presentation tool.\n\n");
fprintf(stderr, "%s", " -d, --debug enable debug messages on STDERR\n");
fprintf(stderr, "%s", " add it multiple times to increases debug level\n");
fprintf(stderr, "%s", " -e, --expand enable character entity expansion\n");
fprintf(stderr, "%s", " -f, --nofade disable color fading in 256 color mode\n");
fprintf(stderr, "%s", " -h, --help display this help and exit\n");
fprintf(stderr, "%s", " -i, --invert swap black and white color\n");
fprintf(stderr, "%s", " -t, --notrans disable transparency in transparent terminal\n");
fprintf(stderr, "%s", " -s, --noslidenum do not show slide number at the bottom\n");
fprintf(stderr, "%s", " -v, --version display the version number and license\n");
fprintf(stderr, "%s", " -x, --noslidemax show slide number, but not total number of slides\n");
fprintf(stderr, "%s", " -c, --nocodebg don't change the background color of code blocks\n");
fprintf(stderr, "%s", "\nWith no FILE, or when FILE is -, read standard input.\n\n");
exit(EXIT_FAILURE);
}
void version() {
printf("mdp %d.%d.%d\n", MDP_VER_MAJOR, MDP_VER_MINOR, MDP_VER_REVISION);
printf("Copyright (C) 2018 Michael Goehler\n");
printf("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
printf("This is free software: you are free to change and redistribute it.\n");
printf("There is NO WARRANTY, to the extent permitted by law.\n");
printf("\nWritten by Michael Goehler and others, see <https://github.com/visit1985/mdp/blob/master/AUTHORS>.\n");
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[]) {
int notrans = 0; // disable transparency
int nofade = 0; // disable fading
int invert = 0; // invert color (black on white)
int noexpand = 1; // disable character entity expansion
int reload = 0; // reload page N (0 means no reload)
int noreload = 1; // reload disabled until we know input is a file
int slidenum = 2; // 0:don't show; 1:show #; 2:show #/#
int nocodebg = 0; // 0:show code bg as inverted; 1: don't invert code bg
// define command-line options
struct option longopts[] = {
{ "debug", no_argument, 0, 'd' },
{ "expand", no_argument, 0, 'e' },
{ "nofade", no_argument, 0, 'f' },
{ "help", no_argument, 0, 'h' },
{ "invert", no_argument, 0, 'i' },
{ "notrans", no_argument, 0, 't' },
{ "version", no_argument, 0, 'v' },
{ "noslidenum", no_argument, 0, 's' },
{ "noslidemax", no_argument, 0, 'x' },
{ "nocodebg", no_argument, 0, 'c' },
{ 0, 0, 0, 0 }
};
// parse command-line options
int opt, debug = 0;
while ((opt = getopt_long(argc, argv, ":defhitvsxc", longopts, NULL)) != -1) {
switch(opt) {
case 'd': debug += 1; break;
case 'e': noexpand = 0; break;
case 'f': nofade = 1; break;
case 'h': usage(); break;
case 'i': invert = 1; break;
case 't': notrans = 1; break;
case 'v': version(); break;
case 's': slidenum = 0; break;
case 'x': slidenum = 1; break;
case 'c': nocodebg = 1; break;
case ':': fprintf(stderr, "%s: '%c' requires an argument\n", argv[0], optopt); usage(); break;
case '?':
default : fprintf(stderr, "%s: option '%c' is invalid\n", argv[0], optopt); usage(); break;
}
}
// set locale to that of the environment, so that ncurses properly renders
// UTF-8 characters if the system supports it
setlocale(LC_CTYPE, "");
// setup list string
setup_list_strings();
// open file or set input to STDIN
char *file = NULL;
FILE *input;
if (optind < argc) {
do {
file = argv[optind];
} while(++optind < argc);
if(!strcmp(file, "-")) {
input = stdin;
} else {
input = fopen(file,"r");
if(!input) {
fprintf(stderr, "%s: %s: %s\n", argv[0], file, strerror(errno));
exit(EXIT_FAILURE);
}
// enable reload because input is a file
noreload = 0;
}
} else {
input = stdin;
}
// reload loop
do {
// reopen input file on reload
if(noreload == 0 && reload > 0) {
if(file) {
input = fopen(file,"r");
if(!input) {
fprintf(stderr, "%s: %s: %s\n", argv[0], file, strerror(errno));
exit(EXIT_FAILURE);
}
} else {
fprintf(stderr, "%s: %s\n", argv[0], "no input file");
exit(EXIT_FAILURE);
}
}
// load deck object from input
deck_t *deck;
deck = markdown_load(input, noexpand);
// close file
fclose(input);
// replace stdin with current tty if input was a pipe
// if input was a pipe reload is disabled, so we simply check that
if(noreload == 1) {
input = freopen("/dev/tty", "rw", stdin);
if(!input) {
fprintf(stderr, "%s: %s: %s\n", argv[0], "/dev/tty", strerror(errno));
exit(EXIT_FAILURE);
}
}
if(debug > 0) {
markdown_debug(deck, debug);
}
reload = ncurses_display(deck, notrans, nofade, invert, reload, noreload, slidenum, nocodebg);
free_deck(deck);
// reload if supported and requested
} while(noreload == 0 && reload > 0);
return EXIT_SUCCESS;
}