hex dump

This is a discussion on hex dump within the C++ Programming forums, part of the General Programming Boards category; how do i hex dump a binary file i created using c++ thanks stanley...

  1. #1
    Registered User
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    May 2002
    Posts
    7

    hex dump

    how do i hex dump a binary file i created using c++

    thanks
    stanley

  2. #2
    Registered User
    Join Date
    May 2002
    Posts
    66
    Dump I would assume you mean to screen? If so, you need to write custom code that reads in the data file into a buffer then displays it to screen, something similar to the following code snippet:

    Code:
    static void dumpMemory_HexAscii(const void *pvObject, u4 u4ObjectSize, std::ostream& os)
        { 
          u1 u1X;
          char cX;
          u4 uX;
          int iBase = 0;
          const int iiPerLine = 16;
    
          for(;;iBase++)
          {
            //a_Hex
            for (uX = 0; uX < iiPerLine; uX++)
            {
              if (iBase * iiPerLine + uX >= u4ObjectSize)
                break;
        
              u1X = *((unsigned char *)pvObject + iBase * iiPerLine + uX);
              os << (u1X < 16 ? "0" : "") << std::hex << (int)u1X << " ";
            }
            os << ": ";
          
            //a_ASCII
            for (uX = 0; uX < iiPerLine; uX++)
            {
              if (iBase * iiPerLine + uX >= u4ObjectSize)
                break;
        
              cX = *((char *)pvObject + iBase * iiPerLine + uX);
              os << (isalnum((u1)cX) ? cX : '.');
            }
            os << std::endl;
    
            if (iBase * iiPerLine + uX >= u4ObjectSize)
              break;
          }
        }
    type info:
    typedef unsigned char u1;
    typedef unsigned short u2;
    typedef unsigned long u4;

    (modify code as needed, shamlessly lifted from open source freeCGI++ library]

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