Re: [Boost-users] program options

From: Stefan Bradl (stefan_bradl_at_[hidden])
Date: 2007-08-22 12:57:10

Am Mittwoch, 22. August 2007 15:03 schrieb Frank Birbacher:
> Hi!
>
> Stefan Bradl schrieb:
> > Hello,
> >
> > I am using boost::program_options and need to load custom config files.
> > So I think I need to write a parser, right?
>
> The program_options library already supports config files. Here is a
> snippet of my custom options class, which reads commandline options and
> an optional config file:
>
> OptionManager(const int argc, char* argv[])
> {
> options_description descriptions("Allowed Options");
> init_options(descriptions);
>
> store(parse_command_line(argc, argv, descriptions), varmap);
>
> if(varmap.count("config"))
> {
> std::ifstream configFile(varmap["config"].as<string>().c_str());
> store(parse_config_file(configFile, descriptions), varmap);
> }
>
> notify(varmap);
> }
>
> where "init_options" is a function written by me. It adds all available
> option descriptions via options_description::add_option. Note the use of
> "parse_config_file" which is supplied by boost. See
> http://www.boost.org/doc/html/program_options/overview.html#id1592208
> for a parser overview.
>
> Frank
>
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Yeah I know that boost already can handle config files but I would like to use 
for example an xml file as config file. Or does boost also provides a feature 
for this?