Re: [Boost-users] Copy from stream to vector

From: Ricardo Mayerhofer (maillistricardo_at_[hidden])
Date: 2007-10-26 11:55:02

Ops, sorry Michael, the example was inconsistent, the correct code is: 
    copy( istream_iterator<string>(FileSource),
istream_iterator<string> (), back_inserter( m_StringVector ) )

Actually the class I use is not string, I just though it would make the
example simpler. 
I use another streamable class which I save to a file and retrieve it
later. (I cannot use serialization in this case, because the format
matters, I mean, I have to save the class state in CSV format).

I tought something like this was possible reading the following topic
when the lib was being developed.

http://listarchives.boost.org/Archives/boost/2004/09/71455.php
> 2. Sources and sinks can be reused in cases where standard streams
and stream
> buffers are either unnecessary or are not
the appropriate abstraction. For
> example, suppose you want to write the
concatenation of three files to a
> string.
> You can do so like this:
> 
> string s;
> boost::io::copy(
> concatenate(
> file_source("file1"),
> file_source("file2"),
> file_source("file3")
> ),
> back_insert_resource(s)
> );

Thanks.

Michael Linck escreveu:
> That copy writes from a Source to a Sink.  Do you need a vector of
> Strings?  Why not a StringStream.  You might be able to use your copy on
> a FileSource and copy to a StringStream.  Also your istream_iterator
> types look inconsistent.
>
> mike
>
> On Thu, 2007-10-25 at 09:11 -0700, Ricardo Mayerhofer wrote:
> > I mean copy of boost iostream:
> > http://www.boost.org/libs/iostreams/doc/index.html
> >
> > Ricardo
> >
> >   
>
> > >          If so, how do I?
> > >         
> > >             eg. with std copy:
> > >             copy( istream_iterator<string>(FileSource), 
> > >         istream_iterator<FileSource> (),
> > >         back_inserter( m_StringVector ) )
> > >         
> > >         Ricardo
> > >         
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