ccbhfile.cpp

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// $Id: ccbhfile.cpp 836 2006-04-18 16:06:15Z gerry $
// Implementation of the CXaraTemplateFile class
/* @@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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              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

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

#include "camtypes.h"

#include "ccbhfile.h"   // include the translating file proxy
//#include "tim.h"      // For error IDs

//-----------------------------------------------

CC_IMPLEMENT_DYNAMIC(CCBinHexFile, CCLexFile);

// This will get Camelot to display the filename and linenumber of any memory allocations
// that are not released at program exit
// Declare smart memory handling in Debug builds
#define new CAM_DEBUG_NEW


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

>   virtual CCFile& CCBinHexFile::write(const void *buf, UINT32 length = 1)

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    12/07/97
    Inputs:     buf - pointer to buffer to write
                length - number of bytes to write
    Purpose:    Writes the buffer to the file

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

CCFile& CCBinHexFile::write(const void *buf, UINT32 length)
{
    // Number of bytes we can translate in one go (half the buffer)
    UINT32 Blocklen = BinHexMaxLineLength / 2;
    UINT32 Index;
    char* pPtr;
    BYTE* pSrc = (BYTE*)buf;
    BOOL bCRLF = (length > Blocklen);

    while (length > 0)
    {
        if (Blocklen > length)
            Blocklen = length;

        if (bCRLF)
        {
            if (m_pFile->write("\r\n", 2).fail())
            {
                GotError(_R(IDE_FILE_WRITE_ERROR));
                break;
            }
        }

        pPtr = (char*)m_Buffer;

        for (Index = 0; Index < Blocklen; Index++)
        {
            ByteToHex(*pSrc, pPtr);
            pSrc += 1;
            pPtr += 2;
        }

        if (m_pFile->write(m_Buffer, Blocklen * 2).fail())
        {
            GotError(_R(IDE_FILE_WRITE_ERROR));
            break;
        }

        length -= Blocklen;
    }

    return(*this);
}


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

>   virtual CCFile& CCBinHexFile::write(const StringBase& buf, UINT32 length = 0)

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    12/07/97
    Inputs:     buf - string reference to write
                length - number of characters to write
    Purpose:    Writes the buffer to the file

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

CCFile& CCBinHexFile::write(const StringBase& buf, UINT32 length)
{
    if (length == 0)
        length = buf.Length();


#if 0 != wxUSE_UNICODE
    size_t              cchTCSrc = camWcstombs( NULL, (const TCHAR *)buf, 0 ) + 1;
    PSTR                pTCSrc = PSTR( alloca( cchTCSrc ) );
    camWcstombs( pTCSrc, (const TCHAR *)buf, cchTCSrc );
#else
    const char* pTCSrc = buf;
#endif

    const char* pSrc = (const char*) pTCSrc;
    
    // Number of chars we can translate in one go (max half of buffer size)
    UINT32 Blocklen = BinHexMaxLineLength / 2;
    UINT32 Index;
    char* pPtr;
    BOOL bCRLF = (length > Blocklen);

    while (length > 0)
    {
        if (Blocklen > length)
            Blocklen = length;

        if (bCRLF)
        {
            if (m_pFile->write("\r\n", 2).fail())
            {
                GotError(_R(IDE_FILE_WRITE_ERROR));
                break;
            }
        }

        pPtr = (char*)m_Buffer;

        for (Index = 0; Index < Blocklen; Index++)
        {
            ByteToHex(*pSrc, pPtr);
            pSrc += 1;
            pPtr += 2;
        }

        if (m_pFile->write(m_Buffer, Blocklen * 2).fail())
        {
            GotError(_R(IDE_FILE_WRITE_ERROR));
            break;
        }

        length -= Blocklen;
    }

    return(*this);
}


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

>   void CCBinHexFile::ByteToHex(BYTE b, char* pPtr)

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    12/07/97
    Inputs:     b - byte to convert
    Outputs:    pPtr - pointer to at least two characters
    Purpose:    Translates the byte to hex (always writes two chars)

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

void CCBinHexFile::ByteToHex(BYTE b, char* pPtr)
{
    char nibble = (b >> 4);
    if (nibble > 9)
        nibble += 55;       // ('A' - 10)
    else
        nibble += '0';
    pPtr[0] = nibble;
    nibble = b & 0xF;
    if (nibble > 9)
        nibble += 55;       // ('A' - 10)
    else
        nibble += '0';
    pPtr[1] = nibble;
}




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

>   virtual CCFile& CCBinHexFile::write(char& buf)

    Author:     Gerry_Iles (Xara Group Ltd) <camelotdev@xara.com>
    Created:    12/07/97
    Inputs:     buf - char reference???
    Purpose:    Writes the char to the file

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


CCFile& CCBinHexFile::write(char& buf)
{
    char Trans[2];

    ByteToHex((BYTE)buf, Trans);
    
    return(m_pFile->write(Trans, 2));
}

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