Re: [Boost-users] Is there a something in boost to facilitate binary buffer transformations into typed data structures/classes?

29 May 2008

      I am having a little trouble getting this to work.  Here's an example
I am working on:

#include 

struct data
{
    boost::integer::little8_t first;
    boost::integer::little8_t second;
    boost::integer::little16_t third;
};

int main(int argc, char *argv[])
{
    std::vector<unsigned char> binary_buffer;

    binary_buffer.push_back(0x03);
    binary_buffer.push_back(0x06);
    binary_buffer.push_back(0x00);
    binary_buffer.push_back(0x09);

    data_record dr;

    std::copy(binary_buffer.begin(), binary_buffer.end(), /* need an
iterator to &dr? */);

    return 0;
}

Am I doing this correctly?

thanks,
graham

On Thu, May 29, 2008 at 1:37 PM, Scott McMurray  wrote:
...
On Thu, May 29, 2008 at 2:19 PM, Graham Reitz  wrote:
...
...would like to convert to this in a C++'ish style using a boost
facility if it exists: (or consider directing me somewhere else if it
doesn't)
There isn't at the moment.
However, Beman Dawes has recently updated his proposed Boost.Endian
library (http://tinyurl.com/4bswsh), and there is a discussion about
it over on the dev list
(http://lists.boost.org/Archives/boost/2008/05/137820.php and
followups).
It would allow you to say (something like)
struct // or class
{
  boost::endian::uint_t<16, boost::endian::big_endian> first;
  boost::endian::uint_t<32, boost::endian::big_endian> second;
} data;
Which you could then std::copy your data into (through char*s), and
use the implicit conversions to get native integral types out.
HTH,
~ Scott
_______________________________________________
Boost-users mailing list
Boost-users@lists.boost.org
http://lists.boost.org/mailman/listinfo.cgi/boost-users