ccbhfile.h

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// $Id: ccbhfile.h 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
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----------------------------------

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=================================XARAHEADEREND============================
 */

#ifndef INC_CCBHFILE
#define INC_CCBHFILE

//#include "ccfile.h" - in camtypes.h [AUTOMATICALLY REMOVED]

const UINT32 BinHexMaxLineLength = 100;

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

>   class CCBinHexFile : public CCLexFile

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    16/7/97
    Base Class: CCLexFile
    Purpose:    Translates data from binary to BinHex format.

    Notes:      This class only checks pCCFile in debug builds

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

class CCBinHexFile : public CCLexFile
{                                   
    CC_DECLARE_DYNAMIC(CCBinHexFile);
public:
    // Constructor with default parameters 
    CCBinHexFile(CCLexFile* pCCFile, BOOL ErrorReporting = TRUE, BOOL ExceptionThrowing = FALSE)
        : CCLexFile(ErrorReporting, ExceptionThrowing), m_pFile(pCCFile) { /* empty */ };
    virtual ~CCBinHexFile() { /* empty */ }
    
    // Switch between text and binary modes.
    virtual BOOL  setMode(INT32 fileMode = 0)
    {
        return(m_pFile->setMode(fileMode));
    };

    // Check if the file is open or not.
    virtual BOOL     isOpen() const { return(m_pFile->isOpen()); };

    // File pointer access/control.
    virtual CCFile&  seekIn(FilePos Pos) { return(m_pFile->seekIn(Pos)); };
    virtual CCFile&  seekIn(INT32 Offset, ios::seekdir Dir)
    {
        return(m_pFile->seekIn(Offset, Dir));
    };
    virtual FilePos  tellIn() { return(m_pFile->tellIn()); };
    virtual CCFile&  seek(FilePos pos) { return(m_pFile->seek(pos)); };
    virtual FilePos  tell() { return(m_pFile->tell()); };

    // Read functions.
    virtual CCFile&  read(void *buf, UINT32 length = 1)
    {
        return(m_pFile->read(buf, length));
    };
    virtual CCFile&  read(StringBase *buf)
    {
        return(m_pFile->read(buf));
    };
    virtual CCFile&  read(char& buf)
    {
        return(m_pFile->read(buf));
    };
                                    
    // Write functions.
    virtual CCFile&  write(const void *buf, UINT32 length = 1);
    virtual CCFile&  write(const StringBase& buf, UINT32 length = 0);
    virtual CCFile&  write(char& buf);

    // Get the size of an open file in bytes.
    virtual size_t   Size() { return(m_pFile->Size()); };

    // Status functions.
    virtual BOOL     eof() const { return(m_pFile->eof()); };

    // Close the file.
    virtual void     close() { m_pFile->close(); };

    // Non-pure status functions.
    virtual BOOL     good() const { return(m_pFile->good()); };
    virtual BOOL     bad() const { return(m_pFile->bad()); };
    virtual BOOL     fail() const { return(m_pFile->fail()); };

    // Pure status setting functions.
    virtual void    SetBadState() { m_pFile->SetBadState(); };
    virtual void    SetGoodState() { m_pFile->SetGoodState(); };

    // Allows access to the underlying fstream, is so required.
    // Mainly required for PNG/ZLib bits
    // All non-disk file classes just return NULL
    virtual iostream* GetIOFile() { return(m_pFile->GetIOFile()); };

    // Flush the file object's buffer (if any).
    virtual CCFile&  flush() { return(m_pFile->flush()); };

    // Get access to the file descriptor or handle for the file
    virtual filedesc GetFileHandle() const { return(m_pFile->GetFileHandle()); };

    // Allow setting of compression of output data
    virtual BOOL IsCompressionSet( ) { return(FALSE); };
    virtual BOOL SetCompression( BOOL ) { return(FALSE); };

    virtual BOOL InitCompression(BOOL Header = FALSE) { return(TRUE); };
    virtual BOOL StartCompression() { return(TRUE); };
    virtual BOOL StopCompression() { return(TRUE); };

protected:
    void ByteToHex(BYTE b, char* pPtr);

protected:
    CCLexFile* m_pFile;

    BYTE m_Buffer[BinHexMaxLineLength];
};

#endif  // INC_CCBHFILE

---