;;;; Name: getenv.cl
;;;; Purpose: UFFI Example file to get environment variable
;;;; Programmer: Kevin M. Rosenberg
-;;;; Date Started: Mar 2002
+;;;; Date Started: Feb 2002
;;;;
-;;;; Copyright (c) 2002 Kevin M. Rosenberg
+;;;; $Id: getenv.cl,v 1.9 2002/04/02 23:27:05 kevin Exp $
;;;;
-;;;; $Id: getenv.cl,v 1.1 2002/03/09 19:55:33 kevin Exp $
+;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
-;;;; This file is part of UFFI.
-;;;;
-;;;; UFFI is free software; you can redistribute it and/or modify
-;;;; it under the terms of the GNU General Public License (version 2) as
-;;;; published by the Free Software Foundation.
-;;;;
-;;;; UFFI is distributed in the hope that it will be useful,
-;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;;; GNU General Public License for more details.
-;;;;
-;;;; You should have received a copy of the GNU General Public License
-;;;; along with UFFI; if not, write to the Free Software Foundation, Inc.,
-;;;; 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+;;;; UFFI users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************
(in-package :cl-user)
-(uffi:def-routine ("getenv" c-getenv)
- ((name :c-string))
- :returning :c-string)
+(uffi:def-function ("getenv" c-getenv)
+ ((name :cstring))
+ :returning :cstring)
-(defun getenv (key)
+(defun my-getenv (key)
"Returns an environment variable, or NIL if it does not exist"
(check-type key string)
- (uffi:with-c-string (key-native key)
- (let ((value-c-string (c-getenv key-native)))
- (uffi:convert-from-c-string value-c-string))))
+ (uffi:with-cstring (key-native key)
+ (uffi:convert-from-cstring (c-getenv key-native))))
-(format t "~&Environment value for USER key: ~A" (getenv "USER"))
-(format t "~&Environment value for _FOO_ key: ~A" (getenv "_FOO_"))
+#+examples-uffi
+(progn
+ (flet ((print-results (str)
+ (format t "~&(getenv ~S) => ~S" str (my-getenv str))))
+ (print-results "USER")
+ (print-results "_FOO_")))
+
+
+#+test-uffi
+(progn
+ (util.test:test (my-getenv "_FOO_") nil :fail-info "Error retrieving non-existent getenv")
+ (util.test:test (and (stringp (my-getenv "USER"))
+ (< 0 (length (my-getenv "USER"))))
+ t :fail-info "Error retrieving getenv")
+)