[Boost-users] program_options, description string formatting question

From: Ed Johnson (ed_at_[hidden])
Date: 2006-09-19 23:03:17

Hi,

Is it possible to generate a description in the following format using
program_options?

It is a more compact format than the program_options default. It helps
keep the left hand column's max length smaller, thus preventing some
excess wrapping in the description column.

Compact format:

[-h/--help]            display usage
[-p/--purpose arg]     model-selection or prediction [model-selection]
-d/--drug arg          HIV drug to be tested
[-t/--thresholds arg]  low and high thresholds for drug resistance
                         Please use only one or two values. [10]

Program Options Default:

  -h [ --help ]                           display usage
  -p [ --purpose ] arg (=model-selection) model-selection or prediction
  -d [ --drug ] arg                       HIV drug to be tested
  -t [ --thresholds ] arg                 Thresholds for high and low
                                          resistance . Please use only 1
                                          thresholds.

In the compact case, drug is a required option, but the others are
optional. So, drug does not get brackets.

Also, default arguments are placed brackets at the end of the
descriptor. Such as, [10] for thresholds

Thanks,

Ed