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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 0
  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-mule-load-path-depth 0
  48   "Depth of load-path searches in Mule Lisp paths.")
  49
  50 (defvar paths-utf-2000-load-path-depth 0
  51   "Depth of load-path searches in UTF-2000 Lisp paths.")
  52
  53 (defvar paths-default-info-directories
  54   (mapcar (function
  55            (lambda (dirlist)
  56              (paths-construct-path
  57               dirlist (char-to-string directory-sep-char))))
  58           '(("usr" "local" "info")
  59             ("usr" "info")
  60             ("usr" "local" "share" "info")
  61             ("usr" "share" "info")))
  62   "Directories appended to the end of the info path by default.")
  63
  64 (defun paths-find-site-lisp-directory (roots)
  65   "Find the site Lisp directory of the XEmacs hierarchy."
  66   (paths-find-site-directory roots "site-lisp"
  67                              nil
  68                              configure-site-directory))
  69
  70 (defun paths-find-site-module-directory (roots)
  71   "Find the site modules directory of the XEmacs hierarchy."
  72   (paths-find-site-directory roots "site-modules"
  73                              nil
  74                              configure-site-module-directory))
  75
  76 (defun paths-find-lisp-directory (roots)
  77   "Find the main Lisp directory of the XEmacs hierarchy."
  78   (paths-find-version-directory roots "lisp"
  79                                 nil
  80                                 configure-lisp-directory))
  81
  82 (defun paths-find-mule-lisp-directory (roots &optional lisp-directory)
  83   "Find the Mule Lisp directory of the XEmacs hierarchy."
  84   ;; #### kludge
  85   (if lisp-directory
  86       (let ((guess
  87              (file-name-as-directory
  88               (paths-construct-path (list lisp-directory "mule")))))
  89         (if (paths-file-readable-directory-p guess)
  90             guess
  91           (paths-find-version-directory roots "mule-lisp"
  92                                         nil
  93                                         configure-mule-lisp-directory)))))
  94
  95 (defun paths-find-utf-2000-lisp-directory (roots &optional lisp-directory)
  96   "Find the UTF-2000 Lisp directory of the XEmacs hierarchy."
  97   ;; #### kludge
  98   (if lisp-directory
  99       (let ((guess
 100              (file-name-as-directory
 101               (paths-construct-path (list lisp-directory "utf-2000")))))
 102         (if (paths-file-readable-directory-p guess)
 103             guess
 104           (paths-find-version-directory roots "utf-2000-lisp"
 105                                         nil
 106                                         configure-utf-2000-lisp-directory)))))
 107
 108 (defun paths-find-module-directory (roots)
 109   "Find the main modules directory of the XEmacs hierarchy."
 110   (paths-find-architecture-directory roots "modules"
 111                                      nil configure-module-directory))
 112
 113 (defun paths-construct-load-path
 114   (roots early-package-load-path late-package-load-path last-package-load-path
 115          lisp-directory
 116          &optional site-lisp-directory mule-lisp-directory
 117          utf-2000-lisp-directory)
 118   "Construct the load path."
 119   (let* ((envvar-value (getenv "EMACSLOADPATH"))
 120          (env-load-path
 121           (and envvar-value
 122                (paths-decode-directory-path envvar-value 'drop-empties)))
 123          (site-lisp-load-path
 124           (and site-lisp-directory
 125                (paths-find-recursive-load-path (list site-lisp-directory)
 126                                                paths-site-load-path-depth)))
 127          (mule-lisp-load-path
 128           (and mule-lisp-directory
 129                (paths-find-recursive-load-path (list mule-lisp-directory)
 130                                                paths-mule-load-path-depth)))
 131          (utf-2000-lisp-load-path
 132           (and utf-2000-lisp-directory
 133                (paths-find-recursive-load-path (list utf-2000-lisp-directory)
 134                                                paths-utf-2000-load-path-depth)))
 135          (lisp-load-path
 136           (and lisp-directory
 137                (paths-find-recursive-load-path (list lisp-directory)
 138                                                paths-core-load-path-depth))))
 139     (append env-load-path
 140             early-package-load-path
 141             site-lisp-load-path
 142             late-package-load-path
 143             utf-2000-lisp-load-path
 144             mule-lisp-load-path
 145             lisp-load-path
 146             last-package-load-path)))
 147
 148 (defun paths-construct-module-load-path
 149   (root module-directory &optional site-module-directory)
 150   "Construct the modules load path."
 151   (let* ((envvar-value (getenv "EMACSMODULEPATH"))
 152          (env-module-path
 153           (and envvar-value
 154                (paths-decode-directory-path envvar-value 'drop-empties)))
 155          (site-module-load-path
 156           (and site-module-directory
 157                (paths-find-recursive-load-path (list site-module-directory)
 158                                                paths-site-load-path-depth)))
 159          (module-load-path
 160           (and module-directory
 161                (paths-find-recursive-load-path (list module-directory)
 162                                                paths-core-load-path-depth))))
 163      (append env-module-path
 164             site-module-load-path
 165             module-load-path)))
 166
 167 (defun paths-construct-info-path (roots early-packages late-packages last-packages)
 168   "Construct the info path."
 169   (let ((info-path-envval (getenv "INFOPATH")))
 170     (paths-uniq-append
 171      (append
 172       (let ((info-directory
 173              (paths-find-version-directory roots "info"
 174                                            nil
 175                                            configure-info-directory)))
 176         (and info-directory
 177              (list info-directory)))
 178       (packages-find-package-info-path early-packages)
 179       (packages-find-package-info-path late-packages)
 180       (packages-find-package-info-path last-packages)
 181       (and info-path-envval
 182            (paths-decode-directory-path info-path-envval 'drop-empties)))
 183      (and (null info-path-envval)
 184           (paths-uniq-append
 185            (paths-directories-which-exist configure-info-path)
 186            (paths-directories-which-exist paths-default-info-directories))))))
 187
 188 (defun paths-find-doc-directory (roots)
 189   "Find the documentation directory."
 190   (paths-find-architecture-directory roots "lib-src" nil configure-doc-directory))
 191
 192 (defun paths-find-exec-directory (roots)
 193   "Find the binary directory."
 194   (paths-find-architecture-directory roots "lib-src"
 195                                      nil configure-exec-directory))
 196
 197 (defun paths-construct-exec-path (roots exec-directory
 198                                   early-packages late-packages last-packages)
 199   "Find the binary path."
 200   (append
 201    (let ((path-envval (getenv "PATH")))
 202      (if path-envval
 203          (paths-decode-directory-path path-envval 'drop-empties)))
 204    (packages-find-package-exec-path early-packages)
 205    (packages-find-package-exec-path late-packages)
 206    (let ((emacspath-envval (getenv "EMACSPATH")))
 207      (and emacspath-envval
 208           (split-path emacspath-envval)))
 209    (and exec-directory
 210         (list exec-directory))
 211    (packages-find-package-exec-path last-packages)))
 212
 213 (defun paths-find-data-directory (roots)
 214   "Find the data directory."
 215   (paths-find-version-directory roots "etc" "EMACSDATA" configure-data-directory))
 216
 217 (defun paths-construct-data-directory-list (data-directory
 218                                             early-packages late-packages last-packages)
 219   "Find the data path."
 220   (append
 221    (packages-find-package-data-path early-packages)
 222    (packages-find-package-data-path late-packages)
 223    (list data-directory)
 224    (packages-find-package-data-path last-packages)))
 225
 226 ;;; setup-paths.el ends here