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   1 ;;; setup-paths.el --- setup various XEmacs paths
   2
   3 ;; Copyright (C) 1985-1986, 1990, 1992-1997 Free Software Foundation, Inc.
   4 ;; Copyright (c) 1993, 1994 Sun Microsystems, Inc.
   5 ;; Copyright (C) 1995 Board of Trustees, University of Illinois
   6
   7 ;; Author: Mike Sperber <sperber@informatik.uni-tuebingen.de>
   8 ;; Maintainer: XEmacs Development Team
   9 ;; Keywords: internal, dumped
  10
  11 ;; This file is part of XEmacs.
  12
  13 ;; XEmacs is free software; you can redistribute it and/or modify it
  14 ;; under the terms of the GNU General Public License as published by
  15 ;; the Free Software Foundation; either version 2, or (at your option)
  16 ;; any later version.
  17
  18 ;; XEmacs is distributed in the hope that it will be useful, but
  19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 ;; General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with XEmacs; see the file COPYING.  If not, write to the
  25 ;; Free Software Foundation, 59 Temple Place - Suite 330,
  26 ;; Boston, MA 02111-1307, USA.
  27
  28 ;;; Synched up with: Not in FSF.
  29
  30 ;;; Commentary:
  31
  32 ;; This file is dumped with XEmacs.
  33
  34 ;; This file describes and constructs the various paths into the
  35 ;; XEmacs hierarchy from a global viewpoint.
  36
  37 ;; It requires find-paths.el and packages.el.
  38 \f
  39 ;;; Code:
  40
  41 (defvar paths-core-load-path-depth 1
  42   "Depth of load-path searches in core Lisp paths.")
  43
  44 (defvar paths-site-load-path-depth 1
  45   "Depth of load-path searches in site Lisp paths.")
  46
  47 (defvar paths-default-info-directories
  48   (mapcar (function
  49            (lambda (dirlist)
  50              (paths-construct-path
  51               dirlist (char-to-string directory-sep-char))))
  52           '(("usr" "local" "info")
  53             ("usr" "info")
  54             ("usr" "local" "share" "info")
  55             ("usr" "share" "info")))
  56   "Directories appended to the end of the info path by default.")
  57
  58 (defun paths-find-site-lisp-directory (roots)
  59   "Find the site Lisp directory of the XEmacs hierarchy."
  60   (paths-find-site-directory roots "site-lisp"
  61                              nil
  62                              configure-site-directory))
  63
  64 (defun paths-find-site-module-directory (roots)
  65   "Find the site modules directory of the XEmacs hierarchy."
  66   (paths-find-site-directory roots "site-modules"
  67                              nil
  68                              configure-site-module-directory))
  69
  70 (defun paths-find-lisp-directory (roots)
  71   "Find the main Lisp directory of the XEmacs hierarchy."
  72   (paths-find-version-directory roots "lisp"
  73                                 nil
  74                                 configure-lisp-directory))
  75
  76 (defun paths-find-module-directory (roots)
  77   "Find the main modules directory of the XEmacs hierarchy."
  78   (paths-find-architecture-directory roots "modules"
  79                                      nil configure-module-directory))
  80
  81 (defun paths-construct-load-path
  82   (roots early-package-load-path late-package-load-path last-package-load-path
  83          lisp-directory
  84          &optional site-lisp-directory)
  85   "Construct the load path."
  86   (let* ((envvar-value (getenv "EMACSLOADPATH"))
  87          (env-load-path
  88           (and envvar-value
  89                (paths-decode-directory-path envvar-value 'drop-empties)))
  90          (site-lisp-load-path
  91           (and site-lisp-directory
  92                (paths-find-recursive-load-path (list site-lisp-directory)
  93                                                paths-site-load-path-depth)))
  94          (lisp-load-path
  95           (and lisp-directory
  96                (paths-find-recursive-load-path (list lisp-directory)
  97                                                paths-core-load-path-depth))))
  98     (append env-load-path
  99             early-package-load-path
 100             site-lisp-load-path
 101             late-package-load-path
 102             lisp-load-path
 103             last-package-load-path)))
 104
 105 (defun paths-construct-module-load-path
 106   (root module-directory &optional site-module-directory)
 107   "Construct the modules load path."
 108   (let* ((envvar-value (getenv "EMACSMODULEPATH"))
 109          (env-module-path
 110           (and envvar-value
 111                (paths-decode-directory-path envvar-value 'drop-empties)))
 112          (site-module-load-path
 113           (and site-module-directory
 114                (paths-find-recursive-load-path (list site-module-directory)
 115                                                paths-site-load-path-depth)))
 116          (module-load-path
 117           (and module-directory
 118                (paths-find-recursive-load-path (list module-directory)
 119                                                paths-core-load-path-depth))))
 120      (append env-module-path
 121             site-module-load-path
 122             module-load-path)))
 123
 124 (defun paths-construct-info-path (roots early-packages late-packages last-packages)
 125   "Construct the info path."
 126   (let ((info-path-envval (getenv "INFOPATH")))
 127     (paths-uniq-append
 128      (append
 129       (let ((info-directory
 130              (paths-find-version-directory roots "info"
 131                                            nil
 132                                            configure-info-directory)))
 133         (and info-directory
 134              (list info-directory)))
 135       (packages-find-package-info-path early-packages)
 136       (packages-find-package-info-path late-packages)
 137       (packages-find-package-info-path last-packages)
 138       (and info-path-envval
 139            (paths-decode-directory-path info-path-envval 'drop-empties)))
 140      (and (null info-path-envval)
 141           (paths-uniq-append
 142            (paths-directories-which-exist configure-info-path)
 143            (paths-directories-which-exist paths-default-info-directories))))))
 144
 145 (defun paths-find-doc-directory (roots)
 146   "Find the documentation directory."
 147   (paths-find-architecture-directory roots "lib-src" nil configure-doc-directory))
 148
 149 (defun paths-find-exec-directory (roots)
 150   "Find the binary directory."
 151   (paths-find-architecture-directory roots "lib-src"
 152                                      nil configure-exec-directory))
 153
 154 (defun paths-construct-exec-path (roots exec-directory
 155                                   early-packages late-packages last-packages)
 156   "Find the binary path."
 157   (append
 158    (let ((path-envval (getenv "PATH")))
 159      (if path-envval
 160          (paths-decode-directory-path path-envval 'drop-empties)))
 161    (packages-find-package-exec-path early-packages)
 162    (packages-find-package-exec-path late-packages)
 163    (let ((emacspath-envval (getenv "EMACSPATH")))
 164      (and emacspath-envval
 165           (split-path emacspath-envval)))
 166    (and exec-directory
 167         (list exec-directory))
 168    (packages-find-package-exec-path last-packages)))
 169
 170 (defun paths-find-data-directory (roots)
 171   "Find the data directory."
 172   (paths-find-version-directory roots "etc" "EMACSDATA" configure-data-directory))
 173
 174 (defun paths-construct-data-directory-list (data-directory
 175                                             early-packages late-packages last-packages)
 176   "Find the data path."
 177   (append
 178    (packages-find-package-data-path early-packages)
 179    (packages-find-package-data-path late-packages)
 180    (list data-directory)
 181    (packages-find-package-data-path last-packages)))
 182
 183 ;;; setup-paths.el ends here