examples/Base/MemMan/Cleanup/HeaderFile/EUHEXDMP.H

/*
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modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of Nokia Corporation nor the names of its contributors
  may be used to endorse or promote products derived from this software
  without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Description:  
*/


_LIT(KTxtTwoSpaces,"  ");
_LIT(KTxtThreeSpaces,"   ");
_LIT(KTxtTwoSpaceStar,"   * ");
_LIT(KTxtOneSpaceStar," *");
_LIT(KFormat1,"%S\n");

inline void hexDump(const TDesC8& aBuffer,TInt32& aAddress,TInt32& aOffset,TDes& aOutput)
        {
        TBuf<35> hexView;
        TBuf<16> charView;
        TBuf<8> hexAddress;
        TBuf<2> hexChar;

        // calculate number of leading spaces due to 16-bit boundaries
        TInt numLeadingSpaces = aAddress % 16;

        for (TInt count=0; count<16; count++)
                {
                        // print space between quartets of hex values
                        if (count==4 || count==8 || count==12) hexView.Append(' ');

                        // display the character/hex-val or a space depending on 16-bit boundary
                        if (count < (numLeadingSpaces)) 
                                {
                                hexView.AppendFormat(KTxtTwoSpaces);
                                charView.Append(' ');
                                }
                        else
                                {
                                TInt curChar = (count - numLeadingSpaces) + aOffset;
                                                // calculate which element of the descriptor to display
                                if (curChar < aBuffer.Size())           // check to see if end of buffer has been exceeded
                                        {
                                        // Ensure hex-format of number is 2 chars long
                                        hexChar.Zero();
                                        hexChar.AppendNumUC(aBuffer[curChar],EHex);
                                        if (hexChar.Length() < 2) hexView.Append('0');
                                        hexView.Append(hexChar);

                                        if (aBuffer[curChar] > 31 && aBuffer[curChar] != 127) charView.Append(aBuffer[curChar]);
                                        else charView.Append('.');
                                        }
                                else
                                        {
                                        hexView.AppendFormat(KTxtTwoSpaces);
                                        charView.Append(' ');
                                        }
                                }
                }

        // Set the length of aOutput to zero (ie. reset the output buffer)
        aOutput.Zero();

        // calculate the 16-bit block address to display
        TInt32 prtAddress = aAddress - numLeadingSpaces;
        hexAddress.AppendNumUC(prtAddress,EHex);
        for (TInt preZeroCount=0; preZeroCount < (8-hexAddress.Length()); preZeroCount++)
                aOutput.Append('0');
        aOutput.Append(hexAddress);
        aOutput.AppendFormat(KTxtThreeSpaces);
        
        // display hex-values and characters
        aOutput.Append(hexView);
        aOutput.AppendFormat(KTxtTwoSpaceStar);
        aOutput.Append(charView);
        aOutput.AppendFormat(KTxtOneSpaceStar);

        // update the address and offset for the descriptor
        aAddress += 16 - numLeadingSpaces;
        aOffset += 16 - numLeadingSpaces;
        }
        
void printBuffer(TInt32 aAddress,const TDesC8& aBuffer)
        {
        TInt32 offset = 0;
        TBuf<80> outputLine;
        while (offset < aBuffer.Size())
                {
                hexDump(aBuffer,aAddress,offset,outputLine);
                console->Printf(KFormat1, &outputLine);
                }
        }

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