Re: Select a startup class from the command line

[Bruce Steers <bsteers4@xxxxxxxxx>]

On Tue, 22 Apr 2025 at 06:04, BB <adamnt42@xxxxxxxxx> wrote:

> Is this possible?
>
> Some programs run different interfaces depending on the "command"
> specified on the command line, notably (or perhaps notoriously) "apt". Such
> as:
>
> 	apt get <params>
> 	apt install <params>
> 	apt this-that-and-the-other <params>
>
> In my case, I'm trying to develop a library to interface to the
> OpenWeatherMap feed. It will have 3 modes of operation (so far):
>
>    - as a library called from a client application, via an exposed
>    interface class "Weather"
>    - as a normal executable to allow the user to setup some configuration
>    data, such as language, API key, etc
>    - as a normal executable that just shows the weather for a location
>    through a small UI
>
> For the latter two then I want to specify which interface to use is a
> similar way to the "apt" command:
>
>    - weather configure
>    - weather [show] <location params>
>    *[show] is optional, if included, the data is just printed on stdout*
>
> Note, this is different from the normal usage of the gb.args component
> where the "options" must come before the "arguments". Here I have a syntax
> of
>
>     weather <command>  <args>  <options>
>
> So for example,
>
>     weather show -67.42137331544458, 164.77271477068862 -l zu
>
> would print the current weather conditions on Sturge Island to stdout in
> the zulu language (should I ever require it 😕).
>
> tia
>
> bruce
>

Not quite sure the exact problem but to answer some questions...

the -s arg sets startup class with gbx3 and gbr3 but you would then need to
use gbr3 prefix on an executable to give the -s arg and not call the
executable directly.


Args can come after params using Args.class  Args.End()
-------------
Dim aRestOfArgs As String[]
Dim bBoolParam As Boolean
Args.Begin()
bBoolParam = Args.Has("b", "bool", "bool param")

aRestOfArgs = Args.End()
-------------

aRestOfArgs[] is now ALL the other remaining args supplied after the ones
processed between Begin and End are removed. these can be examined and
dealt with accordingly.

Does that help?
Respects
BruceS