hexdump.cpp

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#include <cassert>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <string>

#include "common.hpp"

using namespace std;

void hexdump(const void *data, int dataLen) {
    const char *const start = static_cast<const char *>(data);

    int it = 0;

    stringstream all;

    cout << "Hexdump of: " << data << endl;
    while (dataLen > 0) {
        unsigned int lineLength = min((int)16, dataLen);
        const char *line = start + it;

        stringstream ascii;
        stringstream hexDump;

        ascii << setfill('0') << setw(2) << hex << it << " : ";

        for (unsigned int i = 0; i < lineLength; i++) {
            char c = static_cast<char>(line[i]);
            unsigned int varInt = 0;
            varInt |= static_cast<uint8_t>(c);

            if (isprint(varInt) != 0) {
                ascii << static_cast<char>(line[i]);
            } else {
                ascii << '.';
            }

            hexDump << " " << setfill('0') << setw(2) << hex << uppercase << varInt;
        }

        for (int i = lineLength; i < 16; i++) {
            ascii << " ";
        }

        all << ascii.str();
        all << hexDump.str();
        all << endl;

        dataLen -= 16;
        it += lineLength;
    }

    cout << all.str();
}

void hexdumpHexOnly(const void *data, int dataLen) {
    const char *const start = static_cast<const char *>(data);

    int it = 0;

    stringstream all;

    cout << "Hexdump of: " << data << endl;
    while (dataLen > 0) {
        unsigned int lineLength = min((int)16, dataLen);
        const char *line = start + it;

        for (unsigned int i = 0; i < lineLength; i++) {
            char c = static_cast<char>(line[i]);
            unsigned int varInt = 0;
            varInt |= static_cast<uint8_t>(c);

            all << " " << setfill('0') << setw(2) << hex << uppercase << varInt;
        }

        all << endl;

        dataLen -= 16;
        it += lineLength;
    }

    cout << all.str();
}