/*
Slowdown - (C) Richard Whitty 2009

ever yearn for those days when you could actually see the text
scrolling across your terminal? Want to be able to rewatch the old VT100
animations?

Well the wait is over! Emulates any baud speed within reason.

*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>

int main(int argc,char** argv) {
	int baud=2400;	// the baud rate to emulate.
	int delay=-1;	// how long to sleep between chars.
	int x=-1;		// current character.
	if(argv[1]) {	// if there's a parameter passed
		if(strncmp("--help",argv[1],6)) {
	// we have a default if it's not valid.
	// no need to check the return value ;)
			sscanf(argv[1],"%d",&baud);
		} else {
			printf("Usage: %s [--help] [baud]\n"
					"--help:\tDisplay this help message\n"
					"baud:\t The baud rate to emulate\n",*argv);
			return 0;
		}
		if(baud<1) {
			printf("Bad baud rate: %d\n",baud);
			return 1;
		}
	}
	delay = 1000000/baud;
	while( (x=getchar()) != EOF) {
		putchar(x);
		fflush(stdout);
		if(usleep(delay)==-1) return 1;
	}
	return 0;
}