Mercurial > hg > xemacs-beta

comparison lisp/config.el @ 217:d44af0c54775 r20-4b7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Import from CVS: tag r20-4b7
author cvs
date Mon, 13 Aug 2007 10:08:34 +0200
parents
children c5d627a313b1
comparison
equal deleted inserted replaced
216:43306a74e31c 217:d44af0c54775
1 ;;; config.el --- access configuration parameters
2
3 ;; Copyright (C) 1997 Sun Microsystems, Inc.
4
5 ;; Author: Martin Buchholz
6 ;; Keywords: configure
7
8 ;; This file is part of XEmacs.
9
10 ;; XEmacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; any later version.
14
15 ;; XEmacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
19
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with XEmacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
24
25 ;;; Synched up with: not in FSF.
26
27 ;;; Commentary:
28
29 ;;; Code:
30
31
32 (defvar config-value-file (expand-file-name "config.values" exec-directory)
33 "File containing configuration parameters and their values.")
34
35 (defvar config-value-hash-table nil
36 "Hashtable to store configuration parameters and their values.")
37
38 ;;;###autoload
39 (defun config-value-hash-table ()
40 "Returns hashtable of configuration parameters and their values."
41 (when (null config-value-hash-table)
42 (setq config-value-hash-table (make-hashtable 300))
43 (save-excursion
44 (let ((buf (get-buffer-create " *Config*")))
45 (set-buffer buf)
46 (erase-buffer)
47 (insert-file-contents config-value-file)
48 (goto-char (point-min))
49 (condition-case nil
50 (while t
51 (let* ((key (read buf))
52 (value (read buf))
53 (prev (gethash key config-value-hash-table)))
54 (cond ((null prev)
55 (puthash key value config-value-hash-table))
56 ((atom prev)
57 (puthash key (list prev value) config-value-hash-table))
58 (t
59 (nconc prev (list value))))))
60 (end-of-file nil)))
61 (kill-buffer " *Config*")))
62 config-value-hash-table)
63
64 ;;;###autoload
65 (defun config-value (config-symbol)
66 "Return the value of the configuration parameter CONFIG_SYMBOL."
67 (gethash config-symbol (config-value-hash-table)))
68
69 (provide 'config)
70 ;;; config.el ends here