1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
;;; vm-version.el --- Version information about VM and the Emacs running VM.
;;
;; Copyright (C) Kyle E. Jones, Robert Widhopf-Fenk
;; Copyright (C) 2003-2007 Robert Widhopf-Fenk
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License along
;; with this program; if not, write to the Free Software Foundation, Inc.,
;; 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
;;; Code:
(provide 'vm-version)
;; Don't use vm-device-type here because it may not not be loaded yet.
(declare-function device-type "vm-xemacs" ())
(declare-function device-matching-specifier-tag-list "vm-xemacs" ())
(defconst vm-version
(condition-case nil
(with-temp-buffer
(insert-file-contents-literally
(expand-file-name
"version.txt"
(and load-file-name (file-name-directory load-file-name))))
(read (current-buffer)))
(file-error "undefined"))
"Version number of VM.")
(defun vm-version ()
"Return the value of the variable `vm-version'."
(interactive)
(when (interactive-p)
(or (and (stringp vm-version)
(string-match "[0-9]" vm-version))
(error "Cannot determine VM version!"))
(message "VM version is: %s" vm-version))
vm-version)
(defconst vm-xemacs-p
(featurep 'xemacs))
(defconst vm-xemacs-mule-p
(and vm-xemacs-p (featurep 'mule)))
(defconst vm-xemacs-file-coding-p
(and vm-xemacs-p (featurep 'file-coding)
;; paranoia
(fboundp
'set-buffer-file-coding-system)))
(defconst vm-fsfemacs-p
(not vm-xemacs-p))
(defconst vm-fsfemacs-mule-p
(and (not vm-xemacs-mule-p) (featurep 'mule)
(fboundp 'set-buffer-file-coding-system)))
(defun vm-xemacs-p () vm-xemacs-p)
(defun vm-xemacs-mule-p () vm-xemacs-mule-p)
(defun vm-xemacs-file-coding-p () vm-xemacs-file-coding-p)
(defun vm-fsfemacs-p () vm-fsfemacs-p)
(defun vm-fsfemacs-mule-p () vm-fsfemacs-mule-p)
(defun vm-emacs-mule-p ()
(or vm-xemacs-mule-p vm-fsfemacs-mule-p))
(defun vm-mouse-fsfemacs-mouse-p ()
(and vm-fsfemacs-p
(fboundp 'set-mouse-position)))
(defun vm-mouse-xemacs-mouse-p ()
(and vm-xemacs-p
(fboundp 'set-mouse-position)))
(defun vm-menu-fsfemacs-menus-p ()
(and vm-fsfemacs-p
(fboundp 'menu-bar-mode)))
(defun vm-menu-fsfemacs19-menus-p ()
(and vm-fsfemacs-p
(fboundp 'menu-bar-mode)
(= emacs-major-version 19)))
(defun vm-menu-xemacs-menus-p ()
(and vm-xemacs-p
(fboundp 'set-buffer-menubar)))
(defun vm-menu-can-eval-item-name ()
(and vm-xemacs-p
(fboundp 'check-menu-syntax)
(condition-case nil
(check-menu-syntax '("bar" ((identity "foo") 'ding t)))
(error nil))))
(defun vm-multiple-frames-possible-p ()
(cond (vm-xemacs-p
(or (memq 'win (device-matching-specifier-tag-list))
(featurep 'tty-frames)))
(vm-fsfemacs-p
(fboundp 'make-frame))))
(defun vm-mouse-support-possible-p ()
(cond (vm-xemacs-p
(featurep 'window-system))
(vm-fsfemacs-p
(fboundp 'track-mouse))))
(defun vm-mouse-support-possible-here-p ()
(cond (vm-xemacs-p
(memq 'win (device-matching-specifier-tag-list)))
(vm-fsfemacs-p
(memq window-system '(x mac w32 win32)))))
(defun vm-menu-support-possible-p ()
(cond (vm-xemacs-p
(featurep 'menubar))
(vm-fsfemacs-p
(fboundp 'menu-bar-mode))))
(defun vm-menubar-buttons-possible-p ()
"Menubar buttons are menus that have an immediate action. Some
Windowing toolkits do not allow such buttons. This says whether such
buttons are possible under the current windowing system."
(not
(cond (vm-xemacs-p (memq (device-type) '(gtk ns)))
(vm-fsfemacs-p (or (and (eq window-system 'x) (featurep 'gtk))
(eq window-system 'ns))))))
(defun vm-toolbar-support-possible-p ()
(or (and vm-xemacs-p (featurep 'toolbar))
(and vm-fsfemacs-p (fboundp 'tool-bar-mode) (boundp 'tool-bar-map))))
(defun vm-multiple-fonts-possible-p ()
(cond (vm-xemacs-p
(memq (device-type) '(x gtk mswindows)))
(vm-fsfemacs-p
(memq window-system '(x mac w32 win32)))))
(defun vm-images-possible-here-p ()
(or (and vm-xemacs-p (memq (device-type) '(x gtk mswindows)))
(and vm-fsfemacs-p window-system
(or (fboundp 'image-type-available-p)
(and (stringp vm-imagemagick-convert-program)
(stringp vm-imagemagick-identify-program))))))
(defun vm-image-type-available-p (type)
(if (fboundp 'image-type-available-p)
(image-type-available-p type)
(or (featurep type) (eq type 'xbm))))
(defun vm-load-features (feature-list &optional silent)
"Try to load those features listed in FEATURE_LIST.
If SILENT is t, do not display warnings for unloadable features.
Return the list of loaded features."
(setq feature-list
(mapcar (lambda (f)
(condition-case nil
(progn (require f)
f)
(error
(if (load (format "%s" f) t)
f
(when (not silent)
(message "WARNING: Could not load feature %S." f)
;; (sit-for 1)
(message "WARNING: Related functions may not work correctly!")
;; (sit-for 1)
)
nil))))
feature-list))
(delete nil feature-list))
;;; vm-version.el ends here
|
