///////////////////////////////////////////////////////////////////////////
// crc.cpp - CRC calculations performed at compile-time using Template   //
//           MetaProgramming                                             //
//                                                                       //
// source: Moliate, "A gentle introduction to Template Metaprogramming   //
//         with C++", www.codeproject.com/cpp/crc_meta.asp               //
// Edits:  Jim Fawcett, CSE687 - Object Oriented Design, Spring 2005     //
//         - a very few cosmetic modifications, like this prologue       //
//         - prepended template <> before struct REF<0>, in crc.h,       //
//           needed under the compilation rules for VC 7.1               //
// Note:   Notice that compilation time takes a lot longer than you are  //
//         used to due to the compile time calculations done here.       //
///////////////////////////////////////////////////////////////////////////

// CRC_meta.cpp : Prints some text and exits. Not really interesting. <H>
//

#include "stdafx.h"
#include <string.h>
#include "crc.h"

int main(int argc, char* argv[])
{
#ifdef _DEBUG
  printf("================= CRC TABLE ============\n\n");
  CRC::print_table();
  printf("\n========================================\n\n");
#endif
  printf("\tCRC information\n");
  printf("\tName:      \t\"%s\"\n", CRC_NAME);
  printf("\tWidth:     \t%ld bit\n", CRC_WIDTH);
  printf("\tPoly:      \t%X", CRC_POLY);
  printf("\n\tInit:    \t%X", CRC_INIT);
  printf("\n\tReflection in:\t");
#if TRUE == CRC_REFIN
  printf("TRUE\n");
#else
  printf("FALSE\n");
#endif
  printf("\tReflection out:\t");
#if TRUE == CRC_REFOUT
  printf("TRUE\n");
#else
  printf("FALSE\n");
#endif
  printf("\tXOR:       \t%X", CRC_XOROUT);
  printf("\n\n");
  
  if (1==argc)
  {
    char* teststring = CRC_CHECKSTRING;
    printf("============== Test results ============\n");
    printf("Hashing string: \"%s\"\n", teststring);
    unsigned int res = CRC::Hash(reinterpret_cast<unsigned char*>(teststring), strlen(teststring));
    printf("Result: %X %s\n", res, (CRC_CHECK==res)?"(Equals checkvalue)":"- FAILED");

    if (CRC_CHECK != res)
      printf("Checkvalue: %X\n", CRC_CHECK);

    printf("=========================================\n\n");
  }
  else 
  {printf("\n=========================================\nChecksum for strings:\n\n");
   for (int i = 1; i < argc; i++)
    printf("%X\t\"%s\"\n", CRC::Hash(reinterpret_cast<unsigned char*>(argv[i]), strlen(argv[i])), argv[i]);
  }

  return 0;
}