How to match unicode characters with boost::spirit?

Question

How can I match utf8 unicode characters using boost::spirit?

For example, I want to recognize all characters in this string:

$ echo \"На         


        

Answer 1

I haven't got much experience with it, but apparently Spirit (SVN trunk version) supports Unicode.

#define BOOST_SPIRIT_UNICODE // We'll use unicode (UTF8) all throughout

See, e.g. the sexpr parser sample which is in the scheme demo.

BOOST_ROOT/libs/spirit/example/scheme

I believe this is based on the demo from a presentation by Bryce Lelbach¹, which specifically showcases:

• wchar support
• utree attributes (still experimental)
• s-expressions

There is an online article about S-expressions and variant.

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¹ In case it is indeed, here is the video from that presentation and the slides (pdf) as found here (odp)