cxftfile.h

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// $Id: cxftfile.h 1679 2006-08-08 09:47:27Z gerry $
// Header for the CXaraTemplateFile class
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
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=================================XARAHEADEREND============================
 */

#ifndef INC_CXFTFILE
#define INC_CXFTFILE

#include "cxfile.h"

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

>   class CXaraTemplateFile : public CXaraFile

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    09/7/97
    Purpose:    CXaraFile derived class for handling Flare template files
                This translates the records written by the standard native format export
                into the text based format.

                It achieves this by overriding certain functions to maintain a "type list"
                of the contents of the record so it can translate it when the record is 
                written to the file.

                Streamed records also need to be translated and this is achieved by returning
                a proxy CCFile derived class (CCBinHexFile) which translates all data written
                from binary to the BinHex format (a stream of hexadecimal digits where
                each pair of digits represents a byte e.g.

                void Translate(const BYTE* pBuf, char* pStr);
                {
                    for (i = 0; i < BUFSIZE; i++)
                    {
                        sprintf(pStr, "%02x", pBuf[i]);
                        pStr += 2;
                    }
                }

                (Not that it'll actually use that code, rampant as it is... 8-)

    SeeAlso:    CCBinHexFile

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


class CXaraTemplateFile : public CXaraFile
{
    // Give my name in memory dumps
    CC_DECLARE_DYNAMIC(CXaraTemplateFile);

public:
    CXaraTemplateFile();
    virtual ~CXaraTemplateFile() { /* empty */ }

    virtual BOOL OpenToWrite(CCLexFile* pCCFile);
    virtual BOOL OpenToRead(CCLexFile* pThisCCFile);
    virtual BOOL Close(void);

    // This is overriden to return our special CCBinHexFile
    virtual CCLexFile* GetCCFile(void) const;

    virtual INT32 StartRecord(UINT32 Tag, INT32 Size);
    virtual BOOL EndRecord(void);
    virtual INT32 StartStreamedRecord(UINT32 Tag, INT32 Size);
    virtual BOOL EndStreamedRecord(UINT32 *RecordSize);
    virtual UINT32 Write(CXaraFileRecord* pRecord); // Writes a complete record out to file
    virtual UINT32 WriteDefinitionRecord(CXaraFileRecord* pRecord); // Writes a complete record out to file
    virtual BOOL Write(BYTE b);

    virtual BOOL StartCompression() { return(TRUE); };
    virtual BOOL StopCompression() { return(TRUE); };
    virtual BOOL IsCompressionOn() { return(FALSE); };


protected:
    // Should only be used by people who know what they are doing e.g. compression
    // Hence why it is protected
    UINT32 WriteRecordHeader(UINT32 Tag, INT32 Size);
    virtual BOOL FixStreamedRecordHeader(UINT32 *RecordSize);

protected:  
    // Functions for translating binary into text
    BOOL WriteAsText(CXaraFileRecord* pRecord);
    BOOL WriteBinHex(BYTE* pBuf, UINT32 BufSize);
    BOOL WriteLabel(void);
    BOOL IsSimpleUnicode(UINT16* pStr);
    BOOL WriteSimpleUnicode(UINT16* pStr);
    BOOL WriteSimpleASCII(char* pStr);
    UINT32 WriteMultipleWCHARs(BYTE* pTypes, DWORD Count, UINT16* pChars);
    BOOL WriteSingleWCHAR(WCHAR ch);

    inline BOOL IsPrint(WCHAR wc)
    {
        return(((wc) > 31) && ((wc) < 127));
    };

protected:
    PathName m_TempPath;
    CCDiskFile* m_pTempFile;
    CCLexFile* m_pBinHexFile;
    CCLexFile* m_pOrigCCFile;
};

#endif  // INC_CXFTFILE

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