Re: [Boost-users] Boost.Xpressive

Subject: Re: [Boost-users] Boost.Xpressive
From: Nat Goodspeed (nat_at_[hidden])
Date: 2014-08-13 20:16:16

On Wed, Aug 13, 2014 at 7:18 PM, Eric Niebler <eniebler_at_[hidden]> wrote:

> On 8/11/2014 5:27 AM, Goran wrote:

>> So, how can I open a CSV file in text mode, get bidirectional
>> iterators and hand them over to Xpressive?

> The hard part is implementing a
> bidirectional iterator that pages in sections of a text file on demand.
>
> I'm not aware of such a beast in Boost. If I were to implement one, I'd
> probably start by looking at the existing support for memory mapped
> files in Boost.Interprocess.

You might also take a look at multi-pass iterators from Spirit:
http://www.boost.org/doc/libs/1_56_0/libs/spirit/doc/html/spirit/support/multi_pass.html