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Re: [Help-smalltalk] How to access environment variables ?

From: Sean Allen
Subject: Re: [Help-smalltalk] How to access environment variables ?
Date: Wed, 14 Jan 2009 17:33:19 -0500

On Jan 14, 2009, at 3:09 PM, Mehul N. Sanghvi wrote:

Sean Allen said the following on 01/14/2009 12:20 PM:
On Jan 14, 2009, at 11:45 AM, Mehul N. Sanghvi wrote:

I would like to be able to get at all of the environment variables (whether it is the shell environment variables or the CGI environment variables or something else). What object/class would I use for that ?
o wait, i think i know this:
Smalltalk getenv: 'foo'
Smalltalk getenv: 'bar'

Is there something that will get all the environment variables and store it in an Array or something like that ? Using the approach above, say in a CGI environment when I'm trying to debug, I just want it to print every environment variable as I probably do not know what I would be looking for but am hoping
that something in the environment will give me some guidance.

Did that make sense ?

Perl, Tcl, and PHP store the environment variables in an associative array which can then be poked and peeked at (yes the usage of the two words was intentional use of BASIC). Scheme also supports this with a recent enhancement to the language, SRFI-98.

Is there some way to do something similar ? Maybe there is a message "getenvAll" ? I couldn't find it and there doesn't seem to be much documentation for getenv on site.

i've only been looking at the source for a few days but what i know by now ( or think i know, corrections from Paolo appreciated... )

getenv is a call out to C's getenv
you want a call out to environ which doesn't exist right now, someone with more experience than i could put in quickly.

you can see everything in kernel/ and libgst/cint.c

if you are feeling adventurous, there is documentation about interfacing with C at:

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