A really really small, simple and lightweiht library for converting between UTF-8, UTF-16- UTF-32 (and possibly other encodings)

• utf.hpp is a single header: the library consists of a single header file (conveniently named utf.hpp). Include it, and you're good to go. There's nothing to build, nothing to link. Just #include "utf.hpp".
• utf.hpp has no external dependencies: the library uses a few headers from the standard library, but requires no external dependencies.
• utf.hpp works with any string representation: the library relies on iterators (or even raw pointers) to represent strings, and never creates strings or takes ownership of memory. (Which also means no calls to new or malloc)
• utf.hpp is tiny: like, really really small. About 400 lines of code all in all. You could read it in your lunch break.
• utf.hpp is lightweight: no heap allocations, no unnecesary copying of data. No virtual functions, and no exceptions. The library does what you ask it to, and nothing else, with no unnecessary overhead.
• utf.hpp is a really really easy way to convert text between UTF-8, UTF-16 and UTF-32.

##Example usage:

#include "utf.hpp"

// suppose we have some UTF-16 encoded data
std::vector<char16_t> u16data;

// and we want to convert it to UTF-8 stored here
std::string u8data;

// we can create a stringview from the input data
auto sv = utf::make_stringview(u16data.begin(), u16data.end());

// and when converting, we just specify where to write the output
sv.to<utf::utf8>(std::back_inserter(utf8_str));

The library is full-featured and, as far as I know, stable and bug-free. So I'd say go ahead and use it!

For documentation and more examples of use, see the wiki.

Distributed under the Boost Software License.