Decoding unicode code point into utf8 using ICU

Question

I have a unicode character code point stored as a string.

std::string code = "0663";

I need to decode it into utf8 and get as a standard std::string using the ICU library.

I decided to use ICU to get a cross-platform bit-independent solution.

Answer 1

Untested:

1. Convert the string into a int32_t.
2. Treat the int32_t as a UChar32.
3. Create a UnicodeString with UnicodeString::setTo from the UChar32.
4. Create a string object with UnicodeString::toUTF8String from the UnicodeString.