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/*
* Unix test code that puts the terminal into raw mode, then echos typed
* characters to stdout. Derived from sample code in the Stevens book, posted
* online at http://www.lafn.org/~dave/linux/terminalIO.html.
*/
#include <termios.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include "FormatChar.h"
static struct termios save_termios;
static int term_saved;
/* RAW! mode */
int tty_raw(int fd)
{
struct termios buf;
if (tcgetattr(fd, &save_termios) < 0) /* get the original state */
return -1;
buf = save_termios;
/* echo off, canonical mode off, extended input
processing off, signal chars off */
buf.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
/* no SIGINT on BREAK, CR-to-NL off, input parity
check off, don't strip the 8th bit on input,
ouput flow control off */
buf.c_iflag &= ~(BRKINT | ICRNL | ISTRIP | IXON);
/* clear size bits, parity checking off */
buf.c_cflag &= ~(CSIZE | PARENB);
/* set 8 bits/char */
buf.c_cflag |= CS8;
/* output processing off */
buf.c_oflag &= ~(OPOST);
buf.c_cc[VMIN] = 1; /* 1 byte at a time */
buf.c_cc[VTIME] = 0; /* no timer on input */
if (tcsetattr(fd, TCSAFLUSH, &buf) < 0)
return -1;
term_saved = 1;
return 0;
}
/* set it to normal! */
int tty_reset(int fd)
{
if (term_saved)
if (tcsetattr(fd, TCSAFLUSH, &save_termios) < 0)
return -1;
return 0;
}
int main()
{
tty_raw(0);
int count = 0;
while (true) {
char ch;
char buf[16];
int actual = read(0, &ch, 1);
if (actual != 1) {
perror("read error");
break;
}
formatChar(buf, ch);
fputs(buf, stdout);
fflush(stdout);
if (ch == 3) // Ctrl-C
break;
}
tty_reset(0);
return 0;
}
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