toputil.cpp

VC++串口通信设。本书详细说明讲解了在VC++环境下编写串口通信得过程。值得一看

// Get needed include files
#include "TopUtil.h"


// Helper class, binding a Topping enum to its string name
struct CStringToEnumAssoc
{
   // We have to have this constructor
   CStringToEnumAssoc(const CString& strTopping,
                      Topping eTopping)
       : m_strTopping(strTopping),
         m_eTopping(eTopping)
   {}

   CString  m_strTopping;
   Topping  m_eTopping;
};


// Array to map string topping name to enum value supported by
// COM PizzaOrderTaker
CStringToEnumAssoc  g_aToppingAssocs[] =
   {
      CStringToEnumAssoc("Not a topping",        (Topping) 0      ),
      CStringToEnumAssoc("Pepperoni",            Pepperoni        ),
      CStringToEnumAssoc("Sausage",              Sausage          ),
      CStringToEnumAssoc("Ground Beef",          GroundBeef       ),
      CStringToEnumAssoc("Green Olives",         GreenOlives      ),
      CStringToEnumAssoc("Prosciuttini Ham",     ProsciuttiniHam  ),
      CStringToEnumAssoc("Pastrami",             Pastrami         ),
      CStringToEnumAssoc("Green Peppers",        GreenPeppers     ),
      CStringToEnumAssoc("Mushrooms",            Mushrooms        ),
      CStringToEnumAssoc("Onions",               Onions           ),
      CStringToEnumAssoc("Tomatoes",             Tomatoes         ),
      CStringToEnumAssoc("Pesto",                Pesto            ),
      CStringToEnumAssoc("Jalapeno Peppers",     JalapenoPeppers  ),
      CStringToEnumAssoc("Cheddar Cheese",       CheddarCheese    ),
      CStringToEnumAssoc("Fontina Cheese",       FontinaCheese    ),
      CStringToEnumAssoc("Ricotta Cheese",       RicottaCheese    ),
      CStringToEnumAssoc("Feta Cheese",          FetaCheese       ),
      CStringToEnumAssoc("Pineapple",            Pineapple        ),
      CStringToEnumAssoc("Extra Cheese",         ExtraCheese      ),
      CStringToEnumAssoc("Bacon",                Bacon            ),
      CStringToEnumAssoc("Broccoli",             Broccoli         ),
      CStringToEnumAssoc("Genoa Salami",         GenoaSalami      ),
      CStringToEnumAssoc("Zucchini",             Zucchini         ),
      CStringToEnumAssoc("Black Olives",         BlackOlives      ),
      CStringToEnumAssoc("Anchovies",            Anchovies        ),
      CStringToEnumAssoc("Chicken Breast",       ChickenBreast    ),
      CStringToEnumAssoc("Shrimp",               Shrimp           ),
      CStringToEnumAssoc("Artichoke Hearts",     ArtichokeHearts  )
   };


// Constant that tracks the number of toppings
const ULONG g_ulNumToppings =
   sizeof(g_aToppingAssocs) / sizeof(CStringToEnumAssoc);


CString ToppingUtil::ToppingEnumToStr(Topping  eSearchTopping)
{
   // Map an enum to a string
   for (USHORT usLoop = 1; usLoop < g_ulNumToppings; usLoop++)
      if (g_aToppingAssocs[usLoop].m_eTopping == eSearchTopping)
         return g_aToppingAssocs[usLoop].m_strTopping;

   // We should never get to here
   ASSERT(FALSE);
   return "";
}


Topping ToppingUtil::ToppingStrToEnum(const CString& strSearchTopping)
{
   // Map a string to an enum
   CString strRealSearchTopping = strSearchTopping.SpanExcluding("(");
   strRealSearchTopping.TrimRight();
   for (USHORT usLoop = 1; usLoop < g_ulNumToppings; usLoop++)
      if (g_aToppingAssocs[usLoop].m_strTopping == strRealSearchTopping)
         return g_aToppingAssocs[usLoop].m_eTopping;

   // We should never get to here
   ASSERT(FALSE);
   return (Topping) 0;
}