Clojurians Log v2

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set the channel description: Ad-hoc ClojureScript scripting of Mac applications via Apple’s Open Scripting Architecture. https://github.com/babashka/obb

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Do anyone happen to know where Apple documents their own “standard library”? I.e. what is the MDN for Apple’s JS.

I guess this link in the README is the closest thing? https://developer.apple.com/library/archive/documentation/LanguagesUtilities/Conceptual/MacAutomationScriptingGuide/

The scripting guide you linked is great too.

You have access to Cocoa through JXA, so you can even create full-on applications if you want. But if you were to go down that path it might be worthwhile to just compile to JavaScript instead of running everything through obb.

Right.

I was thinking of creating an Input Method using Apple’s JS, so I might use this to get my feet wet

I also want to stress that this thing is in no way ready for prime time. There’ll be (lots of) bugs.

sure, it’s just fun, I get that 🙂

@zane I recommend putting these links in the README

@zane I also recommend watching the repo https://github.com/babashka/obb/watchers for issues :)

I created a couple of issues around the logistics of the project

@borkdude Yeah, I’m definitely going to add a lot more documentation. I wasn’t expecting eyes on the repository this quick. 😅

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set the channel topic: https://github.com/babashka/obb

Another nice example for the README:

$ obb -e '(-> (js/Application "Google Chrome") (.-windows) (aget 0) (.activeTab) (.title))'
Slack | obb | clojurians

Added to the README

Love it.

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@zane Added a github workflow: https://github.com/babashka/obb/runs/4690744423?check_suite_focus=true

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Next highest priority is probably a better printer.

$ obb -e '(range 10)'
I:null, start:0, end:10, step:1, $a:null, Ub:null, L:null, G:32375006, P:140800

@zane yes, the -e can just use prn

see how it's done with #nbb

You can now install #obb with:

brew install babashka/brew/obb

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Great addition to then bb family. I guess https://github.com/Hammerspoon/hammerspoon could be replaced somehow?

obb -e '(-> (js/Application "Spotify") (.-currentTrack) (.name))'

Lots of fun to be had.

Aw yeah!

obb ❤️ bitbar / xbar / swiftbar

Put the result of any obb script in the menubar.

is there ways to explore these apps methods? 🤔

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Found a useful macro that will help with interop:

$ obb -e '
(defmacro ->clj [obj & interops]
  (let [names (map #(clojure.string/replace (str %) #"[.-]" "") interops)
        ks (mapv keyword names)
        exprs (mapv #(list % obj) interops)]
    `(zipmap ~ks [~@exprs]))) 

(-> (js/Application "Spotify") (.-currentTrack) (->clj .artist .album .name) str)'

{:artist "The Gathering", :album "How to Measure a Planet? (Deluxe Edition)", :name "Travel"}

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It would be nice to be able to extend IPrintWithWriter to support object specifiers, but I think the protocol retrieval logic will also crash on them.

yeah, this is something that should be supported in SCI for other targets (nbb, babashka) as well.

or do you mean, extending it in the precompiled obb? (yes, this is what you meant)

Yes.

what do you normally get with console.log on such a thing? also an error in JS?

If an expression evaluates to one you get back something akin to JS code that will produce it:

>> Application("Safari")
=> Application("Safari")

console.logging one will actually crash:

>> console.log(Application("Safari"))

!! Error: Error: Symbol.toPrimitive is not a valid class for application Safari

so what is it actually doing when it prints that? not console.log I assume? is there a special method they call on the object specifier to get this string? I'll be afk now, back tomorrow 💤

Yes.

js/Automation.getDisplayString

Ah I see:

$ time obb -e '(-> (js/Application "Google Chrome") (.-windows) (aget 0) (.-tabs) (aget 0) js/Automation.getDisplayString pr-str)'
"Application(\"Google Chrome\").(0).(0)"

and what happens if you extend the protocol to such a thing and then call this method on it?

Right. I had thought to just

(extend-protocol IPrintWithWriter
  ...
  (-pr-writer [obj writer _]
    (if (object-specifier? obj)
      ...
      ...)))

I’m trying to track down exactly what’s triggering the crash, but it’s hard. 😓

what is on the first three dots?

I’ve tried function, object, and default for the types.

is there not a type like js/ObjectSpecifier that you can extend the protocol to?

Sadly, no.

>> typeof Application("Safari")
=> "function"

we can also patch prn etc in the SCI context

string-print, probably.

probably. this stuff is in

but I was thinking {:namespaces {'clojure.core {'prn ...}}}

in the SCI opts

both are possible but the latter is less hacky.

but if console.log also crashes the thing, I'm not sure if we should try to fix it

don't improve on the JS behavior, just provide the same-but-CLJS behavior I'd say

when printing the return value with -e it's a different story, but there we can just write our own thing

Hmm. Fair!

We could provide a safe-print function in obb.core though, something to think about.

Need to think about whether that’ll work if an OS is in a collection.

Yeah, definitely.

oh right