/* serial.c
 *
 * Written by Andrew Poelsrta
 *  February 11, 2010
 *
 * This code is public domain.
 */


#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>


int main(int argc, char **argv) {
  FILE *fh;
  int ch = '\n';  /* Start with newline so first line will have timestamp */

  if(argc != 2) {
    puts("You need to supply the serial port!");
    return EXIT_FAILURE;
  }

  fh = fopen(argv[1], "rb");
  if(fh == NULL) {
    puts("Failed to open serial port!");
    return EXIT_FAILURE;
  }

  do {
    unsigned char c = ch;
    if(c == '\n') {
      time_t t = time(NULL);
      struct tm *st = localtime(&t);
      printf("\n%02d:%02d:%02d: ", st->tm_hour, st->tm_min, st->tm_sec);
      fflush(stdout);
    } else if(c == '\r') {
      /* ignore this character */
    } else if(isprint(c)) {
      printf("%c", c);
      fflush(stdout);
    } else {
      printf("[%02X]", c);
      fflush(stdout);
    }
  } while((ch = fgetc(fh)) != EOF);
  puts("");

  fclose(fh);
  return 0;
}