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HexDumper.cpp
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HexDumper.cpp
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#include <cctype>
#include <sstream>
#include "snarkfront/HexDumper.hpp"
using namespace std;
namespace snarkfront {
////////////////////////////////////////////////////////////////////////////////
// print messages in hexdump format
//
HexDumper::HexDumper(ostream& os)
: m_hex(os),
m_text(os),
m_os(os)
{}
void HexDumper::print(const vector<uint8_t>& msg) {
const size_t octetsPerLine = 16;
size_t lineIdx = 0;
while (lineIdx < msg.size()) {
// index to beginning of line
m_os << lineIdx << "\t";
// hex numbers
size_t i = lineIdx;
while (i < msg.size() && (i - lineIdx) < octetsPerLine) {
m_hex.push8(msg[i]);
if (7 == i - lineIdx) {
m_os << ' ';
}
++i;
}
// final line may need more whitespace to make columns line up
if (i >= msg.size()) {
while (i - lineIdx < octetsPerLine) {
m_os << " "; // three spaces for uint8_t in hex format
if (7 == i - lineIdx) {
m_os << ' ';
}
++i;
}
}
// start of ASCII
m_os << " |";
// ASCII text
i = lineIdx;
while (i < msg.size() && (i - lineIdx) < octetsPerLine) {
m_text.push8(msg[i]);
++i;
}
// final line may need more whitespace to make columns line up
if (i >= msg.size()) {
while (i - lineIdx < octetsPerLine) {
m_os << ' ';
++i;
}
}
// end of ASCII
m_os << "|" << endl;
// next line
lineIdx += octetsPerLine;
}
}
void HexDumper::print(std::istream& is) {
vector<uint8_t> v;
char c;
while (!is.eof() && is.get(c)) v.push_back(c);
print(v);
}
////////////////////////////////////////////////////////////////////////////////
// print as text characters
//
HexDumper::PrintText::PrintText(ostream& os)
: m_os(os)
{}
void HexDumper::PrintText::pushOctet(const uint8_t a) {
if (isprint(a) && !isspace(a))
m_os << a;
else
m_os << '.';
}
} // namespace snarkfront