unicpp: Just another C++ Unicode library

Character manipulation and category detection functions (unicpp/char_type.h)

bool isalpha(char32_t);
bool isdigit(char32_t);
bool isspace(char32_t);

// one-to-one case mappings
char32_t toupper(char32_t);
char32_t tolower(char32_t);

UTF-8 and UTF-16 encode/decode functions (unicpp/utf8.h, unicpp/utf16.h)

� (U+FFFD) is used as a replacement character when invalid character/byte sequence is encountered

Strings validation/stats functions

size_t Utf8ValidPrefixLength(std::string_view);
size_t Utf8NumValidChars(std::string_view);
size_t Utf8NumCharsWithReplacement(std::string_view);

Encoding/decoding functions

// UTF-8
const std::wstring wide_string = L"Some string";

std::vector<uint8_t> encoded_utf8 = Utf8Bytes<std::vector<uint8_t>>(wide_string);
std::wstring decoded_utf8 = Utf8Wstring<std::wstring>(encoded_utf8);
assert(wide_string == decoded_utf8);

// UTF-16LE
std::vector<uint8_t> encoded_utf16le = Utf16LeBytes<std::vector<uint8_t>>(wide_string);
std::wstring decoded_utf16le = Utf16LeWstring<std::wstring>(encoded_utf16le);
assert(wide_string == decoded_utf16le);

// UTF-16BE
std::vector<uint8_t> encoded_utf16be = Utf16BeBytes<std::vector<uint8_t>>(wide_string);
std::wstring decoded_utf16be = Utf16BeWstring<std::wstring>(encoded_utf16be);
assert(wide_string == decoded_utf16be);