/* Copyright (C) 2003  John Whitney
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Author: John Whitney <jjw@linuxmail.org>
 */
 
unsigned read_word(FILE *f) {
  unsigned char b, b2;
  fread(&b, 1, 1, f);
  fread(&b2, 1, 1, f);
  return (b2<<8)+b;
}
unsigned read_dword(FILE *f) {
  unsigned low = read_word(f);
  return (read_word(f)<<16)+low;
}

void write_word(FILE *f, unsigned number) {
  unsigned char b = number&255;
  fwrite(&b, 1, 1, f);
  b = number>>8;
  fwrite(&b, 1, 1, f);
}

void write_dword(FILE *f, unsigned number) {
  write_word(f, number&65535);
  write_word(f, number>>16);
}

bool fileExists(char *fname) {
  FILE *f = fopen(fname, "rb");
  bool exists = (f!=NULL);
  if (exists) fclose(f);
  return exists;
}

unsigned getLenOfFile(char *fname) {
  FILE *f = fopen(fname, "rb");
  fseek(f, 0, SEEK_END);
  unsigned len = ftell(f);
  fclose(f);
  return len;
}