Re: [Boost-users] Boost Spirit Karma - convert character to hex representation

Subject: Re: [Boost-users] Boost Spirit Karma - convert character to hex representation
From: Hartmut Kaiser (hartmut.kaiser_at_[hidden])
Date: 2015-04-19 09:23:27

> There is karma::hex formatter and I need somehow to add zero padding to
> get “0a” instead of just “a”. in addition it would be lovely to have some
> king of control over hex letter case. It sounds like a policies for real
> or Boolean formatters but I didn’t find one for hex. Is it possible to
> achieve the above without policy?

Padding can be achieved by using the right_align[] directive: http://www.boost.org/doc/libs/1_58_0/libs/spirit/doc/html/spirit/karma/reference/directive/alignment.html.

You can control the hex-letter case using the upper[] and lower[] directives: http://www.boost.org/doc/libs/1_58_0/libs/spirit/doc/html/spirit/karma/reference/directive/upperlower.html. 

HTH
Regards Hartmut
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