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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-load-path-depth 1
  42   "Depth of load-path searches in core Lisp paths.")
  43
  44 (defvar paths-default-info-directories
  45   (list (paths-construct-path '("usr" "local" "info")
  46                               (char-to-string directory-sep-char))
  47         (paths-construct-path '("usr" "info")
  48                               (char-to-string directory-sep-char)))
  49   "Directories appended to the end of the info path by default.")
  50
  51 (defun paths-find-site-lisp-directory (roots)
  52   "Find the site Lisp directory of the XEmacs hierarchy."
  53   (paths-find-site-directory roots "site-lisp"
  54                              nil
  55                              configure-site-directory))
  56
  57 (defun paths-find-site-module-directory (roots)
  58   "Find the site modules directory of the XEmacs hierarchy."
  59   (paths-find-site-directory roots "site-modules"
  60                              nil
  61                              configure-site-module-directory))
  62
  63 (defun paths-find-lisp-directory (roots)
  64   "Find the main Lisp directory of the XEmacs hierarchy."
  65   (paths-find-version-directory roots "lisp"
  66                                 nil
  67                                 configure-lisp-directory))
  68
  69 (defun paths-find-module-directory (roots)
  70   "Find the main modules directory of the XEmacs hierarchy."
  71   (paths-find-architecture-directory roots "modules"
  72                                 configure-module-directory))
  73
  74 (defun paths-construct-load-path
  75   (roots early-package-load-path late-package-load-path last-package-load-path
  76          lisp-directory
  77          &optional site-lisp-directory)
  78   "Construct the load path."
  79   (let* ((envvar-value (getenv "EMACSLOADPATH"))
  80          (env-load-path
  81           (and envvar-value
  82                (paths-decode-directory-path envvar-value 'drop-empties)))
  83          (site-lisp-load-path
  84           (and site-lisp-directory
  85                (paths-find-recursive-load-path (list site-lisp-directory)
  86                                                paths-load-path-depth)))
  87          (lisp-load-path
  88           (and lisp-directory
  89                (paths-find-recursive-load-path (list lisp-directory)
  90                                                paths-load-path-depth))))
  91     (append env-load-path
  92             early-package-load-path
  93             site-lisp-load-path
  94             late-package-load-path
  95             lisp-load-path
  96             last-package-load-path)))
  97
  98 (defun paths-construct-module-load-path
  99   (root module-directory &optional site-module-directory)
 100   "Construct the modules load path."
 101   (let* ((envvar-value (getenv "EMACSMODULEPATH"))
 102          (env-module-path
 103           (and envvar-value
 104                (paths-decode-directory-path envvar-value 'drop-empties)))
 105          (site-module-load-path
 106           (and site-module-directory
 107                (paths-find-recursive-load-path (list site-module-directory)
 108                                                paths-load-path-depth)))
 109          (module-load-path
 110           (and module-directory
 111                (paths-find-recursive-load-path (list module-directory)
 112                                                paths-load-path-depth))))
 113      (append env-module-path
 114             site-module-load-path
 115             module-load-path)))
 116
 117 (defun paths-construct-info-path (roots early-packages late-packages last-packages)
 118   "Construct the info path."
 119   (let ((info-path-envval (getenv "INFOPATH")))
 120     (paths-uniq-append
 121      (append
 122       (let ((info-directory
 123              (paths-find-version-directory roots "info"
 124                                            nil
 125                                            configure-info-directory)))
 126         (and info-directory
 127              (list info-directory)))
 128       (packages-find-package-info-path early-packages)
 129       (packages-find-package-info-path late-packages)
 130       (packages-find-package-info-path last-packages)
 131       (and info-path-envval
 132            (paths-decode-directory-path info-path-envval 'drop-empties)))
 133      (and (null info-path-envval)
 134           (paths-uniq-append
 135            (paths-directories-which-exist configure-info-path)
 136            (paths-directories-which-exist paths-default-info-directories))))))
 137
 138 (defun paths-find-doc-directory (roots)
 139   "Find the documentation directory."
 140   (paths-find-architecture-directory roots "lib-src"))
 141
 142 (defun paths-find-lock-directory (roots)
 143   "Find the lock directory."
 144   (defvar configure-lock-directory)
 145   (paths-find-site-directory roots "lock" "EMACSLOCKDIR" configure-lock-directory))
 146
 147 (defun paths-find-superlock-file (lock-directory)
 148   "Find the superlock file."
 149   ;; #### There is no such variable configure-superlock-file!
 150   (cond
 151    ((null lock-directory)
 152     nil)
 153    ((and configure-superlock-file
 154          (file-directory-p (file-name-directory configure-superlock-file)))
 155     configure-superlock-file)
 156    (t
 157     (expand-file-name "!!!SuperLock!!!" lock-directory))))
 158
 159 (defun paths-find-exec-directory (roots)
 160   "Find the binary directory."
 161   (paths-find-architecture-directory roots "lib-src" configure-exec-directory))
 162
 163 (defun paths-construct-exec-path (roots exec-directory
 164                                   early-packages late-packages last-packages)
 165   "Find the binary path."
 166   (append
 167    (let ((path-envval (getenv "PATH")))
 168      (if path-envval
 169          (paths-decode-directory-path path-envval 'drop-empties)))
 170    (packages-find-package-exec-path early-packages)
 171    (packages-find-package-exec-path late-packages)
 172    (let ((emacspath-envval (getenv "EMACSPATH")))
 173      (and emacspath-envval
 174           (split-path emacspath-envval)))
 175    (and exec-directory
 176         (list exec-directory))
 177    (packages-find-package-exec-path last-packages)))
 178
 179 (defun paths-find-data-directory (roots)
 180   "Find the data directory."
 181   (paths-find-version-directory roots "etc" "EMACSDATA" configure-data-directory))
 182
 183 (defun paths-construct-data-directory-list (data-directory
 184                                             early-packages late-packages last-packages)
 185   "Find the data path."
 186   (append
 187    (packages-find-package-data-path early-packages)
 188    (packages-find-package-data-path late-packages)
 189    (list data-directory)
 190    (packages-find-package-data-path last-packages)))
 191
 192 ;;; setup-paths.el ends here