/***
 * Small program to output stdin or a file one character a time, like it would be typed
 * Author: madmaurice <madmaurice@zom.bi>
 * License: GPL
 */

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>

int main(int argc, char** argv) {
    //Options
    float speed = 0.3;
    char* file = NULL;

    FILE* fh = stdin;
    char c;
    int v;
    argv++; // Cut first element
    for(int i = 1; i < argc; i++, argv++) {
        if(strcmp(*argv,"-s") == 0) {
            argv++; i++;
            v = atoi(*argv);
            if(v == 0) v = 1000;
            speed = 1.0/v;
        } else if(strcmp(*argv,"-h") == 0) {
            printf("usage: tprint [-h] [-s speed] [filename]\n");
            printf("\t-h: Print this help.\n");
            printf("\t-s speed: speed in characters per second (default: 3)\n");
            exit(0);
        } else if(**argv == '-' && strlen(*argv) > 1) {
            printf("Unkown option %s\n",*argv);
            exit(1);
        } else {
            if(strcmp(*argv,"-")==0) {
                fh = stdin;
            } else {
                fh = fopen(*argv,"r");
                if(fh == NULL) {
                    printf("Unable to open %s\n", *argv);
                    exit(2);
                }
            }
        }
    }

    while((c = fgetc(fh)) != EOF) {
        fputc(c,stdout);
        fflush(stdout);
        usleep(speed * 1000000);
    }

    return 0;
}