#include "decimals.h"
#include "inter.h"
#include "tick.h"
#include "exlib.h"

static const L_LONG Byte_Const = 0x010203ff;
static const L_LONG Varbyte_Const = 0xff0302;
static const L_CHAR Char_Const[] = "char";
static const L_CHAR Varchar_Const[] = "vchar";
static const wchar_t NVarchar_Const[] = L"nvarchar";
static const wchar_t NChar_Const[]  = L"nchar";
static const L_DOUBLE Double_Const = 30.01;
static const L_REAL Real_Const = -12.34567f;
static const L_BOOL Bool_Const = L_TTRUE;
static const L_CHAR Extfile_Const[] = "EXTFILE";
static const L_SWORD Smallint_Const = 2;
static const L_LONG  Int_Const = 4;

// Заполняет буфер простейшим значением в зависимости от типа в байтовом виде:
L_BYTE *MakeBYTEValue(int type, int Len, L_BYTE* buf)
{
  switch (type)
  {
    case DT_CHAR:     return memcpy(buf, Char_Const, sizeof(Char_Const));
    case DT_VARCHAR:  return memcpy(buf, Varchar_Const, sizeof(Varchar_Const));
    case DT_BYTE:     return memcpy(buf, &Byte_Const, sizeof(Byte_Const));
    case DT_VARBYTE:  return memcpy(buf, &Varbyte_Const, sizeof(Varbyte_Const));
    case DT_NCHAR:    return memcpy(buf, NChar_Const, sizeof(NChar_Const));
    case DT_NVARCHAR: return memcpy(buf, NVarchar_Const, sizeof(NVarchar_Const));
    case DT_DATE:
      {
        DECIMAL dateVal;
        STRTOTICK("03.03.2003:16:29:00.00", dateVal);
        return memcpy(buf, &dateVal, Len);
      }
    case DT_INTEGER:
      if (Len == sizeof(L_SWORD))
        return memcpy(buf, &Smallint_Const, Len);
      if (Len == sizeof(L_LONG))
        return memcpy(buf, &Int_Const, Len);
      return NULL; // Будет обозначать NULL-значение
    case DT_REAL:
      if (Len == sizeof(L_REAL))
        return memcpy(buf, &Real_Const, Len);
      return memcpy(buf, &Double_Const, Len);
    case DT_DECIMAL:
      {
        DECIMAL decVal;
        DblToDec(12.34, decVal);
        return memcpy(buf, &decVal, Len);
      }
    case DT_BOOL:     return memcpy(buf, &Bool_Const, Len);
    case DT_EXTFILE:  return memcpy(buf, Extfile_Const, sizeof(Extfile_Const));
    default: return NULL;
  } // switch
} // MakeBYTEValue