1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
6 ;;;; Purpose: UFFI Example file to get environment variable
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Feb 2002
10 ;;;; This file, part of UFFI, is Copyright (c) 2002-2010 by Kevin M. Rosenberg
12 ;;;; *************************************************************************
17 (uffi:def-function ("getenv" c-getenv)
21 (defun my-getenv (key)
22 "Returns an environment variable, or NIL if it does not exist"
23 (check-type key string)
24 (uffi:with-cstring (key-native key)
25 (uffi:convert-from-cstring (c-getenv key-native))))
29 (flet ((print-results (str)
30 (format t "~&(getenv ~S) => ~S" str (my-getenv str))))
31 (print-results "USER")
32 (print-results "_FOO_")))
37 (util.test:test (my-getenv "_FOO_") nil :fail-info "Error retrieving non-existent getenv")
38 (util.test:test (and (stringp (my-getenv "USER"))
39 (< 0 (length (my-getenv "USER"))))
40 t :fail-info "Error retrieving getenv")