Unicode string normalization in C/C++

Question

Am wondering how to normalize strings (containing utf-8/utf-16) in C/C++. In .NET there is a function String.Normalize .

I used UTF8-CPP in the past but it does not provide such a function. ICU and Qt provide string normalization but I prefer lightweight solutions.

Is there any "lightweight" solution for this?

Answer 1

As I wrote in another question, utf8proc is a very nice, lightweight, library for basic Unicode functionality, including Unicode string normalization.

Answer 2

For Windows, there is the NormalizeString() function (unfortunately for Vista and later only - as far as I see on MSDN):

http://msdn.microsoft.com/en-us/library/windows/desktop/dd319093%28v=vs.85%29.aspx

It's the simplest way to go that I have found so far. I guess it's quite lightweight too.

int NormalizeString(
    _In_      NORM_FORM NormForm,
    _In_      LPCWSTR   lpSrcString,
    _In_      int       cwSrcLength,
    _Out_opt_ LPWSTR    lpDstString,
    _In_      int       cwDstLength
);