Mercurial > hg > xemacs-beta

comparison lisp/hyperbole/hversion.el @ 0:376386a54a3c r19-14

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
parents
children 4103f0995bd7
comparison
equal deleted inserted replaced
-1:000000000000 0:376386a54a3c
1 ;;!emacs
2 ;;
3 ;; LCD-ENTRY: hyperbole|Bob Weiner|hyperbole@hub.ucsb.edu|Everyday Info Manager|03-Nov-95|4.01|ftp.cs.uiuc.edu:/pub/xemacs/infodock/
4 ;;
5 ;; FILE: hversion.el
6 ;; SUMMARY: Hyperbole version, system and load path information.
7 ;; USAGE: GNU Emacs Lisp Library
8 ;; KEYWORDS: hypermedia
9 ;;
10 ;; AUTHOR: Bob Weiner
11 ;; ORG: Brown U.
12 ;;
13 ;; ORIG-DATE: 1-Jan-94
14 ;; LAST-MOD: 3-Nov-95 at 23:08:37 by Bob Weiner
15 ;;
16 ;; This file is part of Hyperbole.
17 ;; Available for use and distribution under the same terms as GNU Emacs.
18 ;;
19 ;; Copyright (C) 1994, 1995 Free Software Foundation, Inc.
20 ;; Developed with support from Motorola Inc.
21 ;;
22 ;; DESCRIPTION:
23 ;; DESCRIP-END.
24
25 ;;; ************************************************************************
26 ;;; Public variables
27 ;;; ************************************************************************
28
29 (defconst hyperb:version "04.01" "Hyperbole revision number.")
30
31 ;;; Support button highlighting and flashing under XEmacs.
32 ;;;
33 (defvar hyperb:xemacs-p
34 (let ((case-fold-search t))
35 (if (string-match "XEmacs" emacs-version)
36 emacs-version))
37 "Version string under XEmacs (not Lucid Emacs) or nil")
38
39 ;;; Support button highlighting and flashing under obsolete Lucid Emacs.
40 ;;;
41 (defvar hyperb:lemacs-p
42 (let ((case-fold-search t))
43 (if (string-match "XEmacs\\|Lucid" emacs-version)
44 emacs-version))
45 "Version string under XEmacs or Lucid Emacs or nil")
46
47 ;;; Support mouse handling under GNU Emacs V19.
48 ;;;
49 (defvar hyperb:emacs19-p
50 (and (not hyperb:lemacs-p)
51 (string-match "^19\\." emacs-version)
52 emacs-version)
53 "Version string under GNU Emacs 19 or nil")
54
55 ;;; Support button highlighting and flashing under obsolete Epoch.
56 ;;;
57 (defvar hyperb:epoch-p
58 (if (and (boundp 'epoch::version)
59 (stringp epoch::version))
60 (if (string< epoch::version "Epoch 4") "V3" "V4"))
61 "Simplified version string under Epoch, e.g. \"V4\", or nil")
62
63 ;; Koutlines work only with specific versions of Emacs 19 and XEmacs.
64 (defconst hyperb:kotl-p
65 (if hyperb:lemacs-p
66 ;; Only works for XEmacs 19.9 and above.
67 (string-match "^19\\.9 \\|^19\\.[1-9][0-9]" emacs-version)
68 hyperb:emacs19-p)
69 "Non-nil iff this Emacs version supports the Hyperbole outliner.")
70
71 (defun sm-window-sys-term ()
72 "Returns the first part of the term-type if running under a window system, else nil.
73 Where a part in the term-type is delimited by a '-' or an '_'."
74 (let ((term (cond ((memq window-system '(x ns dps pm))
75 ;; X11, NEXTSTEP (DPS), or OS/2 Presentation Manager (PM)
76 (cond (hyperb:emacs19-p "emacs19")
77 (hyperb:lemacs-p "lemacs")
78 (hyperb:epoch-p "epoch")
79 (t "xterm")))
80 ((or (featurep 'eterm-fns)
81 (equal (getenv "TERM") "NeXT")
82 (equal (getenv "TERM") "eterm"))
83 ;; NEXTSTEP add-on support to Emacs
84 "next")
85 ((or window-system
86 (featurep 'sun-mouse) (featurep 'apollo))
87 (getenv "TERM")))))
88 (and term
89 (substring term 0 (string-match "[-_]" term)))))
90
91 (defconst hyperb:window-system (sm-window-sys-term)
92 "String name for window system or term type under which Emacs was run.
93 If nil, no window system or mouse support is available.")
94
95 ;;; ************************************************************************
96 ;;; Public functions to dynamically compute Hyperbole directory.
97 ;;; ************************************************************************
98
99 (defvar hyperb:automount-prefixes
100 (if (and (boundp 'automount-dir-prefix) (stringp automount-dir-prefix))
101 automount-dir-prefix
102 "^/tmp_mnt/"
103 "*Regexp to match any automounter prefix in a pathname."))
104
105 (defun hyperb:stack-frame (function-list &optional debug-flag)
106 "Return the nearest Emacs Lisp stack frame which called any function symbol from FUNCTION-LIST or nil if no match.
107 If FUNCTION-LIST contains 'load, 'autoload or 'require, detect
108 autoloads not visible within the Lisp level stack frames.
109
110 With optional DEBUG-FLAG non-nil, if no matching frame is found, return list
111 of stack frames (from innermost to outermost)."
112 (let ((count 0)
113 (frame-list)
114 (load-flag (or (memq 'load function-list)
115 (memq 'autoload function-list)
116 (memq 'require function-list)))
117 fsymbol
118 fbody
119 frame)
120 (or (catch 'hyperb:stack-frame
121 (while (setq frame (backtrace-frame count))
122 (if debug-flag (setq frame-list (cons frame frame-list)))
123 (setq count (1+ count)
124 fsymbol (nth 1 frame))
125 (and (eq fsymbol 'command-execute)
126 (not (memq 'command-execute function-list))
127 ;; Use command being executed instead because it might not
128 ;; show up in the stack anywhere else, e.g. if it is an
129 ;; autoload under Emacs 19.
130 (setq fsymbol (nth 2 frame)))
131 (cond ((and load-flag (symbolp fsymbol)
132 (fboundp fsymbol)
133 (listp (setq fbody (symbol-function fsymbol)))
134 (eq (car fbody) 'autoload))
135 (setq frame (list (car frame) 'load
136 (car (cdr fbody))
137 nil noninteractive nil))
138 (throw 'hyperb:stack-frame frame))
139 ((memq fsymbol function-list)
140 (throw 'hyperb:stack-frame frame))))
141 nil)
142 (if debug-flag (nreverse frame-list)))))
143
144 (defun hyperb:path-being-loaded ()
145 "Return the full pathname used by the innermost `load' or 'require' call.
146 Removes any matches for `hyperb:automount-prefixes' before returning
147 the pathname."
148 (let* ((frame (hyperb:stack-frame '(load require)))
149 (function (nth 1 frame))
150 file nosuffix)
151 (cond ((eq function 'load)
152 (setq file (nth 2 frame)
153 nosuffix (nth 5 frame)))
154 ((eq function 'require)
155 (setq file (or (nth 3 frame) (symbol-name (nth 2 frame))))))
156 (if (stringp file)
157 (setq nosuffix (or nosuffix
158 (string-match
159 "\\.\\(elc?\\|elc?\\.gz\\|elc?\\.Z\\)$"
160 file))
161 file (substitute-in-file-name file)
162 file (locate-file file load-path
163 (if nosuffix "" ".elc:.el:.el.gz:.el.Z:")
164 ;; accept any existing file
165 0)
166 file (if (and (stringp file)
167 (string-match hyperb:automount-prefixes file))
168 (substring file (1- (match-end 0)))
169 file)))))
170
171 (if (fboundp 'locate-file)
172 nil
173 (defun locate-file (file dir-list &optional suffix-string unused)
174 "Search for FILE in DIR-LIST.
175 If optional SUFFIX-STRING is provided, allow file to be followed by one of the
176 colon separated suffixes."
177 (let ((suffix-list))
178 (cond ((null suffix-string) (setq suffix-list '("")))
179 ((stringp suffix-string)
180 (let ((start 0)
181 (len (length suffix-string)))
182 (while (and (< start len)
183 (string-match "[^:]+" suffix-string start))
184 (setq suffix-list
185 (cons (substring suffix-string
186 (match-beginning 0)
187 (match-end 0))
188 suffix-list)
189 start (1+ (match-end 0))))
190 (setq suffix-list (nconc (nreverse suffix-list) '("")))))
191 (t (error "(locate-file): Invalid third arg, '%s', use a colon separated string of file suffixes"
192 suffix-string)))
193 (if (and (file-name-absolute-p file) (file-readable-p file))
194 file;; file exists without suffix addition, so return it
195 (if (file-name-absolute-p file) (setq dir-list '(nil)))
196 (if (equal file "") (error "(locate-file): Empty file argument"))
197 (let (suffixes pathname)
198 ;; Search dir-list for a matching, readable file.
199 (catch 'found
200 (while dir-list
201 (setq suffixes suffix-list)
202 (while suffixes
203 (setq pathname (expand-file-name
204 (concat file (car suffixes))
205 (car dir-list)))
206 (if (file-readable-p pathname)
207 (throw 'found pathname))
208 (setq suffixes (cdr suffixes)))
209 (setq dir-list (cdr dir-list)))))))))
210
211 ;;; ************************************************************************
212 ;;; Public functions used by pulldown and popup menus
213 ;;; ************************************************************************
214
215 (if (not (fboundp 'id-browse-file))
216 (fset 'id-browse-file 'find-file-read-only))
217
218 (if (not (fboundp 'id-info))
219 (defun id-info (node)
220 (if (br-in-browser) (br-to-view-window))
221 (Info-goto-node node)))
222
223 (if (not (fboundp 'id-tool-quit)) (fset 'id-tool-quit 'eval))
224
225 (if (not (fboundp 'id-tool-invoke))
226 (defun id-tool-invoke (sexp)
227 (if (commandp sexp)
228 (call-interactively sexp)
229 (funcall sexp))))
230
231 (provide 'hversion)