Re: [Boost-users] [Boost.Program_options] Is there a way to havealloptions specifiedwith a single dash instead of double?

5 Jan 2006

      Hmmm...I must be missing something very obvious. 
Trying your example, I still don't seem to be able to use -config-file, but only --config-file.

Here's my code snippet:

string strConfigFile;
po::options_description desc2;
desc2.add_options()
    ( "config-file", po::value< std::string >( & strConfigFile )->default_value( "jaja" ) );
po::variables_map vm2;
po::store(po::parse_command_line(argc, argv, desc2), vm2);
po::notify(vm2); 

And this is accepted fine:
--config-file foo

While this throws an 'unkown option -c':
-config-file foo

Any insights into what may be causing such a difference in behaviot?
Thanks
Guy,

________________________________

From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Alexandre Gacon
Sent: Thursday, January 05, 2006 8:46 AM
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] [Boost.Program_options] Is there a way to havealloptions specifiedwith a single dash instead of double?

No, all the args start with a single '-'.

For example, with the following code:

    po::options_description desc;

    desc.add_options()

        ( "config-file", po::value< std::string >( & strConfigFile )->default_value( defaultConfigFilePath.native_file_string() ) );

I am able to call my program with a -config-file my_config_file.cfg command line.

Alexandre

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De : boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] De la part de Guy Peled
Envoyé : jeudi 5 janvier 2006 17:21
À : boost-users@lists.boost.org
Objet : [Boost-users] [Boost.Program_options] Is there a way to have alloptions specifiedwith a single dash instead of double?

I'm interested in switching over the command line processing of an existing tool to use program_options.
However, all of the args are of the format '-foo -bar -whatever 1' etc.
As far as I can tell from the docs it seems like by default the program_options library assumes args all start with a '--' or have single character short names that start with a single dash. Is there a way to coerce it into the behavior I'm looking for?

Thanks for any tips!
Guy. 

_________________________________________________________________ 

Guy Peled       Email gpeled@nvidia.com 
3D/Tools Architect      408-486-2505 
nVIDIA  2701 San Tomas Expressway 
www.nvidia.com file:///\\www.nvidia.com   Santa Clara, CA 95050 

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