The problem is, I think, that everyone will have a slightly different
definition of "interactive environment." If I run
java ... clojure.main path/to/file.clj
does that count? What about
java ... my.compiled.namespace
? Or what about a REPL thread inside another application? Or a
Clojure function invoked from Java code?
The problem isn't even well-defined in Java. The runtime doesn't
provide an easy way to find out which "main" class started the VM, nor
does it offer a standard way to determine what sort of container your
code is running in. The assumption seems to be that code should not
care about its environment.
I think the solution is to define your own *environment* var and bind
it where you see fit, wrapping clojure.main if necessary.
-SS
On Sep 3, 11:10 pm, Phil Hagelberg <p...@hagelb.org> wrote:
> I'm finding some situations in my projects where I want to know if the
> code is running from an interactive environment or not.
>
> It would be great if environment developers could agree on a convention
> to signal this. I suggest something like an *environment* variable that
> would be bound to a string describing the program running the current
> instance. These strings would probably look something like a web
> browser's User-Agent string, containing the name and version. I'm not
> totally sold on the word "environment" as it also has some shell-centric
> connotations, so I'm open to other suggestions too.
>
> If it is not bound, you may assume it's either an old build of Clojure
> or it's running straight from the command line or perhaps inside a
> non-clojure-aware application server (like jetty or tomcat). The
> clojure.main/repl function could bind this, and we could get SLIME,
> VimClojure, and other editor/IDE systems to bind it as well.
>
> What do you think? Would that be helpful? I'd be willing to write
> patches for clojure.main/repl as well as SLIME.
>
> -Phil
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