is there a way to parse "subcomand" or composite options? #467
Description
definition of "subcomand"
it is like an argument and then there are following arguments based on the previous argument. Basically a tree of options rather than just a list.
is this possible or cxx options will do only the root level of the tree (a list of options)?
- a
|
a1
a2
-b
|
b1
b1
exagmple of the tree options: (all valids)
myprog a a1
myprog a a2
myprog b b1
myprog b b2
also this will need to have a tree help section:
myprog a --help
myprog b -h
definition of composite options:
a complex option for e.g.:
(basic example)
-a[0-9]<b|c>
it means parsing -a with a required number between 0-9 (so that has an int value in terms of cxxpotionsthen it must have abor ac` to specify something on that previous argument, and eventually even a further one, etc...
it could be created by the user crafting for each options the dependent logic, so basically cxxopts, but if the cxxopts will do it would be a lot better as otherwise it is not really useful. Becase also it is connected to the help, makes the .help() totally useless...
this could be somehow as well designed as a dependent options:
Help section:
-a[0-9] : do the 'a' options, must specified also -b or -c when using -a[n], -b is default.
-b : do the 'b' option. must be used with -a[n]
-c : do the 'c' option. must be used with -a[n]
so from the cli:
myprog -a1 -c #as a dependent option
myprog -a1c #as a composite option
the -a1c if it is like GNU options might work, but still the -c dependency to -a` should be specified.
is it possible to add these kind of features?