void
Name::toEscapedString(const vector<uint8_t>& value, ostringstream& result)
{
bool gotNonDot = false;
for (unsigned i = 0; i < value.size(); ++i) {
if (value[i] != 0x2e) {
gotNonDot = true;
break;
}
}
if (!gotNonDot) {
// Special case for component of zero or more periods. Add 3 periods.
result << "...";
for (size_t i = 0; i < value.size(); ++i)
result << '.';
}
else {
// In case we need to escape, set to upper case hex and save the previous flags.
ios::fmtflags saveFlags = result.flags(ios::hex | ios::uppercase);
for (size_t i = 0; i < value.size(); ++i) {
uint8_t x = value[i];
// Check for 0-9, A-Z, a-z, (+), (-), (.), (_)
if ((x >= 0x30 && x <= 0x39) || (x >= 0x41 && x <= 0x5a) ||
(x >= 0x61 && x <= 0x7a) || x == 0x2b || x == 0x2d ||
x == 0x2e || x == 0x5f)
result << x;
else {
result << '%';
if (x < 16)
result << '0';
result << (unsigned int)x;
}
}
// Restore.
result.flags(saveFlags);
}
}
