#include <stdio.h>
#include <unistd.h>
#include <termios.h>
#include "definitions.h"
#include "rs232.h"

int rs232_getline(int file_descriptor,
		  char *buffer,
		  size_t max_bytes_to_read,
		  size_t *bytes_read) {
  unsigned char c;
  int i=0;
  
  while (max_bytes_to_read > 0) {
    if (read(file_descriptor, &(c), 1) == -1) {
      fprintf(stderr,
	      "*ERROR* Failed to read character from file_descriptor %d!\n",
	      file_descriptor);
      fflush(stderr);
      return FAILURE;
    }
    if (c == TERMINATOR) {
      break; /* found the final terminator.  Now exit the loop */
    } else {
      buffer[i] = (char) c;
    }
    buffer[i+1] = '\0';
    i++;
    max_bytes_to_read--;
  }
  *bytes_read = (size_t) (i-1);
  buffer[i-1] = '\0';
  return SUCCESS;
}