/usr/share/gEDA/scheme/geda/os.scm is in libgeda-common 1:1.8.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | ;; gEDA - GPL Electronic Design Automation
;; libgeda - gEDA's library - Scheme API
;; Copyright (C) 2011 Peter Brett <peter@peter-b.co.uk>
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2 of the License, or
;; (at your option) any later version.
;;
;; This program 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 this program; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
;;
(define-module (geda os)
; Import C procedures and variables
#:use-module (geda core os)
#:use-module (srfi srfi-1)
#:use-module (ice-9 regex))
(define-public platform %platform)
(define-public (platform? x)
(member x (platform)))
(define-public separator-char
(if (platform? 'win32-native) #\\ #\/))
(define-public separator (string separator-char))
(define-public path-separator-char
(if (platform? 'win32-native) #\; #\:))
(define-public path-separator (string path-separator-char))
(define-public separator-char?
(if (platform? 'win32-native)
(let ((cls (char-set #\\ #\/)))
(lambda (x) (char-set-contains? cls x)))
(lambda (x) (eq? separator-char x))))
(define-public (sys-data-dirs)
(list (getenv "GEDADATA")))
(define-public (sys-config-dirs)
(list (getenv "GEDADATARC")))
(define-public (user-data-dir)
(string-join (list (getenv "HOME") ".gEDA") separator))
(define-public user-config-dir user-data-dir)
(define-public expand-env-variables
;; Only compile regular expression once
(let ((rx (make-regexp "\\$\\{(\\w*)\\}")))
;; This is the actual expand-env-variables function -- it's a
;; closure around rx.
(lambda (str)
;; Returns result of expanding the environment variable name
;; found in match, or "".
(define (match-getenv m)
(or (getenv (match:substring m 1)) ""))
;; Carries out a single round of environment variable expansion
;; on str
(define (expand-once str)
(regexp-substitute/global #f rx str 'pre match-getenv 'post))
;; Tail-recursively expands str until no more environment variables
;; can be expanded.
(let ((result (expand-once str)))
(if (string=? str result)
result
(expand-env-variables result))))))
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