64 lines
2.1 KiB
Scheme
64 lines
2.1 KiB
Scheme
#| -*-Scheme-*-
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Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
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1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016,
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2017, 2018, 2019, 2020 Massachusetts Institute of Technology
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This file is part of MIT/GNU Scheme.
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MIT/GNU Scheme is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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MIT/GNU Scheme is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with MIT/GNU Scheme; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
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USA.
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|#
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;;;; Edwin Pathnames
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(define (edwin-library-directory-pathname envvar required?)
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(let ((envval (get-environment-variable envvar)))
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(if envval
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(pathname-as-directory (merge-pathnames envval))
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(or (system-library-directory-pathname "edwin")
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(and required?
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(error "Can't find edwin library directory."))))))
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(define (edwin-binary-directory)
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(edwin-library-directory-pathname "EDWIN_BINARY_DIRECTORY" #t))
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(define (edwin-info-directory)
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(let ((pathname
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(edwin-library-directory-pathname "EDWIN_INFO_DIRECTORY" #f)))
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(and pathname
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(merge-pathnames "info" (pathname-as-directory pathname)))))
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(define (edwin-etc-directory)
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(edwin-library-directory-pathname "EDWIN_ETC_DIRECTORY" #t))
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(define (edwin-etc-pathname filename)
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(let ((pathname (merge-pathnames filename (edwin-etc-directory))))
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(if (not (file-exists? pathname))
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(error "Unable to find file:" (->namestring pathname)))
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pathname))
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(define (edwin-tutorial-pathname)
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(edwin-etc-pathname "TUTORIAL"))
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(define default-homedir-pathname
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;; This binding exists to allow uses of the "home" directory as a
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;; default directory to be overridden.
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user-homedir-pathname)
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