mirror of
https://github.com/eddyem/tty_term.git
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84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/*
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* This file is part of the ttyterm project.
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* Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program 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 by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <signal.h>
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#include <stdio.h>
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#include <string.h> // strcmp
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#include <usefull_macros.h>
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#include "cmdlnopts.h"
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#include "tty.h"
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// we don't need more than 64 bytes for TTY input buffer - USB CDC can't transmit more in one packet
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#define BUFLEN 65
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static TTY_descr *dev = NULL;
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void signals(int signo){
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restore_console();
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if(dev) close_tty(&dev);
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exit(signo);
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}
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typedef enum{
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EOL_N = 0,
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EOL_R,
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EOL_RN
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} eol_t;
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int main(int argc, char **argv){
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glob_pars *G = NULL; // default parameters see in cmdlnopts.c
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initial_setup();
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G = parse_args(argc, argv);
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dev = new_tty(G->ttyname, G->speed, BUFLEN);
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if(!dev || !(dev = tty_open(dev, 1))) return 1; // open exclusively
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eol_t eol = EOL_N;
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if(strcmp(G->eol, "n")){ // change eol
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if(strcmp(G->eol, "r") == 0) eol = EOL_R;
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else if(strcmp(G->eol, "rn") == 0) eol = EOL_RN;
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else ERRX("End of line should be \"r\", \"n\" or \"rn\"");
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}
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signal(SIGTERM, signals); // kill (-15) - quit
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signal(SIGHUP, signals); // hup - quit
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signal(SIGINT, signals); // ctrl+C - quit
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signal(SIGQUIT, signals); // ctrl+\ - quit
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signal(SIGTSTP, SIG_IGN); // ignore ctrl+Z
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setup_con();
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const char r = '\r';
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while(1){
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int b;
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int l = read_ttyX(dev, &b);
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if(l < 0) signals(9);
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if(b > -1){
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char c = (char)b;
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if(c == '\n' && eol != EOL_N){ // !\n
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if(eol == EOL_R) c = '\r'; // \r
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else if(write_tty(dev->comfd, &r, 1)) WARN("write_tty()"); // \r\n
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}
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if(write_tty(dev->comfd, &c, 1)) WARN("write_tty()");
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}
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if(l){
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printf("%s", dev->buf);
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fflush(stdout);
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// if(fout) copy_buf_to_file(buff, &oldcmd);
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}
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}
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// never reached
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return 0;
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}
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