///////////////////////////////////////////////////////////////////////////////
//
// (c) Digi International Inc. 2002. All Rights Reserved
//
// Digi provides this document "as is," without warranty of any kind,
// either expressed or implied, including, but not limited to, the implied
// warranties of fitness or merchantability for a particular purpose. Digi
// may make improvements and/or changes in this document or in the product(s)
// and/or the program(s) described in this document at any time.
//
// This document could include technical inaccuracies or typographical errors.
// Changes are periodically made to the information herein; these changes may
// be incorporated in new editions of the publication.
//
// Digi International Inc.
// 11001 Bren Road East
// Minnetonka, MN 55343, USA
// Tel: +1 (952) 912-3444
// Fax: +1 (952) 912-4952
// http://www.digi.com/
//
///////////////////////////////////////////////////////////////////////////////

// hexdumpdata.cpp
//

#include <stdio.h>
#include <string.h>
#include <ctype.h>

//---------------------------------------------------------------------------
//
// HexDumpData
//
// Description:
//
//    Utitily function for dumping data in a human readable hex format to
//    stdout.
//
// Parameters:
//
//    Data - Pointer to contiguous byte array of data
//    Length - Number of bytes Data points to
//
// Return Value:
//
// Remarks:
//
//    This function assumes that Data is a valid pointer to at least
//    Length number of bytes.
//
//---------------------------------------------------------------------------
void HexDumpData(unsigned char const * const Data, size_t const Length)
{
	char HexString[25] = {0};
	char CharString[9] = {0};

	for (size_t i = 0; i < Length; i++)
	{
		unsigned char Datum = Data[i];

		char FormatString[4];

		sprintf(FormatString, "%.2x ", Datum);
		strcat(HexString, FormatString);

		sprintf(FormatString, "%c", isprint(Datum) ? Datum : '.');
		strcat(CharString, FormatString);

		size_t NextIndex = (i + 1);
		if ((NextIndex % 8 == 0) || (NextIndex == Length))
		{
			printf("%-26.26s%s\n", HexString, CharString);

			HexString[0] = '\0';
			CharString[0] = '\0';
		}
	}
}