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#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
void spinner(int );
int main(int argc, char **argv) {
int speed, n, l, ifd, ofd;
struct termios term;
char buf[BUFSIZ];
if (argc != 4){
fprintf(stderr, "usage: binlog <speed> <port> <logfile>\n");
return 1;
}
speed = atoi(argv[1]);
switch (speed) {
case 230400:
case 115200:
case 57600:
case 38400:
case 28800:
case 14400:
case 9600:
case 4800:
break;
default:
fprintf(stderr, "invalid speed\n");
return 1;
}
if ((ifd = open(argv[2], O_RDWR | O_NONBLOCK | O_NOCTTY, 0644)) == -1)
err(1, "open");
if ((ofd = open(argv[3], O_RDWR | O_CREAT | O_APPEND, 0644)) == -1)
err(1, "open");
tcgetattr(ifd, &term);
cfmakeraw(&term);
cfsetospeed(&term, speed);
cfsetispeed(&term, speed);
if (tcsetattr(ifd, TCSANOW | TCSAFLUSH, &term) == -1)
err(1, "tcsetattr");
tcflush(ifd, TCIOFLUSH);
n = 0;
while (1){
l = read(ifd, buf, BUFSIZ);
if (l > 0)
write(ofd, buf, l);
usleep(1000);
bzero(buf, BUFSIZ);
spinner( n++ );
}
return 0;
}
void spinner(int n){
char *s = "|/-\\";
if (n % 4)
return;
n /= 4;
fprintf(stderr, "\010\010\010\010\010\010\010\010\010\010\010\010\010");
fprintf(stderr, "%c %d", s[n%4], n);
fflush(stderr);
}
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