[Boost-users] Re: Re: Re: program-options: multi-token for a single value

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-02-28 04:06:36

Austin Bingham wrote:

>> I think I'll be able to implement this. OTOH, this will become
>> command-line specific. What if you want to parse --position from config
>> file:
>> 
>>   position=10:11:12:N 13:14:15:W
>> 
>> in this case there are no separate token, the value is considered to be
>> one token. So probably, the best approach is to write your validator so
>> that it operates on a single string, and make program_options merge the
>> tokens. This way, the same validator will work both the command line and
>> config file.
> 
> That's all sounds great to me. As long as I don't have to force my
> users to use extra quotes and stuff, I'm willing to do whatever is
> necessary in my validator.

So, syntax like 

    --position="10:11:12:N 13:14:15:W"

is not acceptable for you, right? I though about it over weekend and now
find this syntax the best one. But anyway I'll think about allowing the
syntax you want too.

- Volodya