/******************************************************************************

  Header File:  Code Page Knowledge Base.H

  This encapsulates a C++ class which will reside in this DLL.  It will provide
  all of the basic information needed to manage and translate code pages for the 
  Minidriver Development Tool.

  Copyright (c) 1997 by Microsoft Corporation

******************************************************************************/

class AFX_EXT_CLASS CCodePageInformation {
    DWORD   m_dwidMapped, m_dwidIn, m_dwidOut;  //  CP cached in each array
    CByteArray  m_cbaMap;                       //  Raw Map
    CWordArray  m_cwaIn, m_cwaOut;              //  Full MB2Uni and Uni2MB maps

    BOOL    Load(DWORD dwidMap);                //  Load the support page
    BOOL    Map(BOOL bUnicode);                 //  Map the requested direction
    BOOL    GenerateMap(DWORD dwidMap) const;   //  Create resource for RC file
                                                //  based on this code page

public:

    CCodePageInformation();

    //  Attributes

    const unsigned  InstalledCount() const;     //  Code pages in )S
    const unsigned  MappedCount() const;        //  Code pages in RC file
    const unsigned  SupportedCount() const;     //  Code pages supported by OS

    const DWORD     Installed(unsigned u) const;    //  Retrieve one
    const DWORD     Mapped(unsigned u) const;       //  Retrieve one
    void            Mapped(CDWordArray& cdwaReturn) const;  //  The IDs
    const DWORD     Supported(unsigned u) const;    //  Retrieve one

    CString         Name(DWORD dw) const;           //  Name of the code page
                                                    //  cf RC file
    BOOL            IsInstalled(DWORD dwPage) const;
    BOOL            HaveMap(DWORD dwPage) const;

    //  DBCS query- is page DBCS?  if so is this code point DBCS?

    BOOL            IsDBCS(DWORD dwidPage);
    BOOL            IsDBCS(DWORD dwidPage, WORD wCodePoint); 

    //  Operations
    unsigned        Convert(CByteArray& cbaMBCS, CWordArray& cbaWC, 
                            DWORD dwidPage);

    BOOL            GenerateAllMaps() const;        //  Gen resources for any 
                                                    //  installed & unsupported
    BOOL            Collect(DWORD dwidMap, CWordArray& cwaWhere, 
                            BOOL bUnicode = TRUE);
};