Subject: Re: [Boost-users] [serialization] appending to an archive
From: Pfligersdorffer, Christian (Christian.Pfligersdorffer_at_[hidden])
Date: 2009-05-25 05:01:20
Hello Hurcan,
an archive writes a preamble when it's created and possibly an end-tag
when destroyed (xml). Your options are: either keep the archive (on the
heap) instead of creating/destroying it, or organize your stream into
multiple archives. We did it the latter way and it works fine.
I wonder why you would need boost serialization at all if all you do is
appending a string to a file. There are simpler ways to do that :-)
Good luck,
--
Christian Pfligersdorffer
Software Engineering
http://www.eos.info
Hurcan wrote:
> I am trying to append one or more records to the existing
> archive file, using something like this;
>
> void Logger::save(const std::string& fileName) {
> assert(fileName != "logger.dmp");
> bp::time_duration endRecordTime = getCurrentTime();
>
> ofs.flush();
> path dst = complete(path(fileName, native));
> path src = complete(path("logger.dmp", native)); remove(dst);
> copy_file(src, dst);
>
>
> ofstream saveFile(dst,std::ios::app);
> ArchiveType archive(saveFile,boost::archive::no_header);
> *mArchive << endRecordTime
> }
>
> although i specify no_header flag, it inserts a '0' as a
> preamble, how can i turn it off? have you guys ever needed to
> use serialization like this? what was your solution
>
> Thanks in advance
> Hurcan