Re: [Gcl-devel] command line arguments

[Camm Maguire]

Greetings!  OK I've whipped up something like what you want -- can you
try it out and see if its worth getting in before release?  If so, let
me know and I'll provisionally commit the changes somewhere and point
you to it.

Take care,

"Jared C. Davis" <address@hidden> writes:

> Hi,
>
> I'm trying to write a wrapper function that provides uniform access to
> the command-line arguments of Lisp programs across many Lisps.
>
> In CCL (and also in Allegro, CLISP, CMUCL, SBCL, mutatis mutandis), one can 
> do:
>
>    $ cat myprog-ccl
>    #!/bin/sh
>    exec ccl -I myprog.ccl -K ISO-8858-1 -e "(myprog::main)" -- "$@"
>
> The options that come before the special "--" argument here are "for
> the Lisp", and options after it are "for my program."
>
> This is especially nice because there is no ambiguity:
>   #1. If my program takes its own -I switch, that's okay: the LIsp
> isn't going to get confused and think that I'm telling it to use some
> other image.
>   #2. If my program doesn't have its own -K switch, that's fine: the
> Lisp isn't going to send that option to the program, because it's an
> option for the Lisp.
>
> Does GCL have any command-line switch similar to "--"?
>
>>From the man page, it almost sounds like I want to use -f.  But that
> seems to do something strange involving reading files, and so it
> doesn't seem quite right.
>
> If there is no such option, I guess I can at least write my wrapper
> script along the following lines:
>
>   $ cat myprog-gcl
>   #!/bin/sh
>   exec myprog.gcl -eval "(myprog::main)" -- "$@"
>
> Then, in my program, I could at least throw out everything before the
> "--" in si::*command-args*.
>
> This would at least give me the good behavior #2.  But since GCL would
> still be processing all of the arguments, it doesn't seem like it
> solves #1.  For instance, if my program has its own options with names
> like -f, -dir, -eval, etc., then GCL will think are options for it,
> and then would presumably try to do crazy things.
>
> Thanks!
> Jared

-- 
Camm Maguire                                        address@hidden
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