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1 | ;;; srfi-98.scm --- An interface to access environment variables |
2 | ||
3 | ;; Copyright (C) 2009 Free Software Foundation, Inc. | |
4 | ;; | |
5 | ;; This library is free software; you can redistribute it and/or | |
6 | ;; modify it under the terms of the GNU Lesser General Public | |
7 | ;; License as published by the Free Software Foundation; either | |
83ba2d37 | 8 | ;; version 3 of the License, or (at your option) any later version. |
922d417b JG |
9 | ;; |
10 | ;; This library is distributed in the hope that it will be useful, | |
11 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | ;; Lesser General Public License for more details. | |
14 | ;; | |
15 | ;; You should have received a copy of the GNU Lesser General Public | |
16 | ;; License along with this library; if not, write to the Free Software | |
17 | ;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | ||
19 | ;;; Author: Julian Graham <julian.graham@aya.yale.edu> | |
20 | ;;; Date: 2009-05-26 | |
21 | ||
22 | ;;; Commentary: | |
23 | ||
24 | ;; This is an implementation of SRFI-98 (An interface to access environment | |
25 | ;; variables). | |
26 | ;; | |
27 | ;; This module is fully documented in the Guile Reference Manual. | |
28 | ||
29 | ;;; Code: | |
30 | ||
31 | (define-module (srfi srfi-98) | |
32 | :use-module (srfi srfi-1) | |
33 | :export (get-environment-variable | |
34 | get-environment-variables)) | |
35 | ||
36 | (cond-expand-provide (current-module) '(srfi-98)) | |
37 | ||
38 | (define get-environment-variable getenv) | |
39 | (define (get-environment-variables) | |
40 | (define (string->alist-entry str) | |
41 | (let ((pvt (string-index str #\=)) | |
42 | (len (string-length str))) | |
43 | (and pvt (cons (substring str 0 pvt) (substring str (+ pvt 1) len))))) | |
44 | (filter-map string->alist-entry (environ))) |