Hi Andrew. Am 07.07.16 um 11:47 schrieb Andrew Carter: > > @andreas > > Having a standardized interface for - for example - the OutputInterface > would allow me to use a third-party library to format output in > different CLI-tools. > > > I'm not sure this is a significant enough programming problem to warrant > a PSR. I'm trying to think of times when I would ever have wanted to do > this - but I can only speak for my own experience (which is limited). Having done several CLI-tools in the last time I was looking for a way to do exactly that. But also, that's my personal idea but I believe it would be a good idea to have a standardized interface to be able to use third-party tools. > > Or I could use third-party libraries to filter and validate input > using a HTTP-like Middleware-approach. > > > Interesting, but this isn't a console PSR - this is a separate > filter/validate middleware PSR. A PSR for a CLI-Interface in my eyes should includ interfaces for input and output handling similar to PSR-7. And with such a standardized interface it would be possible to implement validation/filtering using middlewares. It would be even more interesting to have ONE interface for CLI AND HTTP-Middleware, but that's far to complicated in my eyes and wouldn't justify the effort.
>
> That surely can all be achieved using plain PHP-functionality, but
> having a certain layer of abstraction would make it much easier for
> me to write the main business-logic without always having to
> implement all the addon stuff like validating input, howe to format
> the output, etc.
>
>
> Again, I'm not really convinced there is any down side here from
> coupling to say Symfony Console (or an alternative). Composer vendor
> binaries allow you to provide as many executable commands as you like
> from different dependencies.
I was more talking about me implementing a business-logic that others
can implement. And then it would be much easier to have one set of
interfaces to be implemented instead of enabling the busines-logic for
different CLI-providers. Or the user using the logic will have to create
the command by himself and handle invocation of the logic herself.
Personally I'm absolutely in favour of creating a certain
standardization for CLI-tools but there seems to be need to further
define WHAT should be standardized and what not.
I'll try to create a set of interfaces to have something more
substantial to talk about.
Cheers
Andreas
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