Re: [Boost-bugs] [Boost C++ Libraries] #823: Seekable file_descriptor_source /sink?

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #823: Seekable file_descriptor_source /sink?
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-08-19 15:36:51

#823: Seekable file_descriptor_source /sink?
-------------------+--------------------------------------------------------
  Reporter:  gmsb  |       Owner:  bemandawes 
      Type:  Bugs  |      Status:  new        
 Milestone:        |   Component:  iostreams  
   Version:  None  |    Severity:  Showstopper
Resolution:  None  |    Keywords:             
-------------------+--------------------------------------------------------
Changes (by marshall):

  * component:  None => iostreams

Old description:

> {{{
> The supplied file_descriptor_source and file_descriptor_sink are not
> seekable. Is this an oversight?
>
> For file_descriptor_source, all that appears to be needed is changing
> from:
>
>     struct category : public source_tag, closable_tag { };
>
> to:
>
>     struct category
>       : input_seekable,
>         device_tag,
>         closable_tag
>     { };
>
> and adding:
>
>     using file_descriptor::seek;
>
> Similarly for file_descriptor_sink.
>

> }}}

New description:

 {{{
 The supplied file_descriptor_source and file_descriptor_sink are not
 seekable. Is this an oversight?

 For file_descriptor_source, all that appears to be needed is changing
 from:

     struct category : public source_tag, closable_tag { };

 to:

     struct category
       : input_seekable,
         device_tag,
         closable_tag
     { };

 and adding:

     using file_descriptor::seek;

 Similarly for file_descriptor_sink.


 }}}

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/823#comment:2>
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