c++ - Read relative file path with Boost Program options -

I am working on a command line tool that can read the options:

< Li>
• An optional configuration file

I used to read those options and it works mostly well.

My code is like this:

Namespace = po = boost :: program_options; Name space fs = boost :: filesystem; Po :: variables_map vm; Po :: store (po :: parse_command_line (argc, argv, option), vm); Po :: store (po :: parse_config_file (ifs, options, true), vm); Po :: Notify (VM);

However, some of these options are file paths and I want them to be relative to the origin of the option. Here's an example of what I mean:

Assume that my tool is located in: / usr / local / bin

  mytool - After parsing - Foo.path ../config/assets/toto.txt  

, the foo.path option is the absolute path of the / usr Should be /local/config/assets/toto.txt .

Now if I specify foo.path in a configuration file, which is located at / usr / local /config/myconf.cfg The same happens:

  foo.path = assets / toto.txt  

I like the path, not according to the configuration file (execution path) And as a result the full path will be the same as before.

Does the value of an option come from so that I can adjust the path when completely transforming the relative path?