Re: [Boost-users] program_options allow_unregistered and *nix style

On Fri, Apr 12, 2013 at 7:16 PM, Larry wrote:

Not necessarily the best example in the world but the following works for me:

using namespace boost::program_options; namespace po = boost::program_options;

const int style(command_line_style::default_style + command_line_style::allow_long_disguise + command_line_style::allow_dash_for_short); po::variables_map vm; vector<string> unreg;

//----------------------------------------------------------------------------- // Set up options

//-----------------------------------------------------------------------------

po::options_description desc("Allowed options"); desc.add_options() ("help,h", "produce help message") ("input-file,i", po::value(), "input file") ("debug,d", po::value<string>(), "debug") ("noupdates,x", po::value<string>(), "no updates") ;

Question about the options_description: how about parsing with multiple sections? For instance, I'd like to compose with a visible and hidden options strategy. po::options_description visible; //... po::options_description temp("Temp options); temp.add_options() ("myopt,m", "my option); visible.add(temp); Doesn't seem to parse. "myopt" falls through as unregistered. I can simply populate visible for now I think. But eventually would like to group the options according to various business needs. //-----------------------------------------------------------------------------

// Parse the command line

//-----------------------------------------------------------------------------

parsed_options parsed = command_line_parser(argc,argv).style(style).options(desc).allow_unregistered().run(); unreg = collect_unrecognized(parsed.options,include_positional); po::store(parsed, vm); po::notify(vm);

Much of the style stuff is documented only if you wade through code. unreg will contain the unrecognized items.

Larry

*From:* Michael Powell *Sent:* Friday, April 12, 2013 4:03 PM *To:* boost-users@lists.boost.org *Subject:* [Boost-users] program_options allow_unregistered and *nix style

Hello,

I would like to find a way to allow_unregistered program_options, as well as specify cls::unix_style ^ cls::allow_short, where cls is po::command_line_style.

The code I've got here doesn't seem to like unrecognized ones:

//vis_ are my visible options, vars_ is my variable map. po::store(parse_command_line(argc, argv, vis_, cls::unix_style ^ cls::allow_short), vars_); po::notify(vars_);

And then a slight variation with apparently a way to do this (untested), how to specify that cls?

// http://stackoverflow.com/questions/10178525/how-to-handle-unsolicited-parame... po::parsed_options parsed_ = po::command_line_parser(argc, argv) .options(vis_).allow_unregistered().run();

Possible? Thank ye...

Regards,

Michael Powell

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