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hex_util: Add HexVectorToString and HexStringToVector

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Converts between bytes and strings when the size is not known at compile time.
This commit is contained in:
Zach Hilman 2018-09-30 18:13:02 -04:00
parent f85f2b3728
commit f62227aa95
2 changed files with 24 additions and 0 deletions
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19
src/common/hex_util.cpp
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@ -18,6 +18,25 @@ u8 ToHexNibble(char c1) {
return 0;
}
std::vector<u8> HexStringToVector(std::string_view str, bool little_endian) {
std::vector<u8> out(str.size() / 2);
if (little_endian) {
for (std::size_t i = str.size() - 2; i <= str.size(); i -= 2)
out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]);
} else {
for (std::size_t i = 0; i < str.size(); i += 2)
out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]);
}
return out;
}
std::string HexVectorToString(std::vector<u8> vector, bool upper) {
std::string out;
for (u8 c : vector)
out += fmt::format(upper ? "{:02X}" : "{:02x}", c);
return out;
}
std::array<u8, 16> operator""_array16(const char* str, std::size_t len) {
if (len != 32) {
LOG_ERROR(Common,