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/*
 *  Output text slowly, simulating a physical serial terminal
 */

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include "tsc_usleep.h"

#define DEFBAUD 9600

int baud = DEFBAUD;
int delay;


static void output(int fd)
{
    unsigned char c;

    while (read(fd, &c, 1) > 0) {
	tsc_usleep(delay);
	write(1, &c, 1);
    }
}

static void usage(void)
{
    fprintf(stderr, "usage: scat [-b baud] [file ...]\n");
    exit(1);
}

int main(int argc, char **argv)
{
    int c;

    while ((c = getopt(argc, argv, ":b:")) != -1) {
	switch (c) {
	    case 'b':
		baud = atoi(optarg);
		break;
	    case '?':
	    case ':':
	    default:
		usage();
	}
    }

    delay = 1000000 / ((double)baud / 10.);

    if (optind < argc) {
	int i;
	for (i = optind; i < argc; i++) {
	    int fd;
	    if ((fd = open(argv[i], O_RDONLY)) < 0) {
		perror("open");
		continue;
	    }
	    output(fd);
	    close(fd);
	}
    } else
	output(0);

    return 0;
}
.

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