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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
|
;;; gnus-picon.el --- displaying pretty icons in Gnus
;; Copyright (C) 1996-2012 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news xpm annotation glyph faces
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; There are three picon types relevant to Gnus:
;;
;; Persons: person@subdomain.dom
;; users/dom/subdomain/person/face.gif
;; usenix/dom/subdomain/person/face.gif
;; misc/MISC/person/face.gif
;; Domains: subdomain.dom
;; domain/dom/subdomain/unknown/face.gif
;; Groups: comp.lang.lisp
;; news/comp/lang/lisp/unknown/face.gif
;;
;; Original implementation by Wes Hardaker <hardaker@ece.ucdavis.edu>.
;;
;;; Code:
;; For Emacs <22.2 and XEmacs.
(eval-and-compile
(unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
(eval-when-compile (require 'cl))
(require 'gnus)
(require 'gnus-art)
;;; User variables:
(defcustom gnus-picon-news-directories '("news")
"*List of directories to search for newsgroups faces."
:type '(repeat string)
:group 'gnus-picon)
(defcustom gnus-picon-user-directories '("users" "usenix" "local" "misc")
"*List of directories to search for user faces."
:type '(repeat string)
:group 'gnus-picon)
(defcustom gnus-picon-domain-directories '("domains")
"*List of directories to search for domain faces.
Some people may want to add \"unknown\" to this list."
:type '(repeat string)
:group 'gnus-picon)
(defcustom gnus-picon-file-types
(let ((types (list "xbm")))
(when (gnus-image-type-available-p 'gif)
(push "gif" types))
(when (gnus-image-type-available-p 'xpm)
(push "xpm" types))
types)
"*List of suffixes on picon file names to try."
:type '(repeat string)
:group 'gnus-picon)
(defcustom gnus-picon-properties '(:color-symbols (("None" . "white")))
"List of image properties applied to picons."
:type 'list
:version "24.3"
:group 'gnus-picon)
(defcustom gnus-picon-style 'inline
"How should picons be displayed.
If `inline', the textual representation is replaced. If `right', picons are
added right to the textual representation."
;; FIXME: `right' needs improvement for XEmacs.
:type '(choice (const inline)
(const right))
:group 'gnus-picon)
(defcustom gnus-picon-inhibit-top-level-domains t
"If non-nil, don't piconify top-level domains.
These are often not very interesting."
:version "24.1"
:type 'boolean
:group 'gnus-picon)
;;; Internal variables:
(defvar gnus-picon-glyph-alist nil
"Picon glyphs cache.
List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
(defvar gnus-picon-cache nil)
;;; Functions:
(defsubst gnus-picon-split-address (address)
(setq address (split-string address "@"))
(if (stringp (cadr address))
(cons (car address) (split-string (cadr address) "\\."))
(if (stringp (car address))
(split-string (car address) "\\."))))
(defun gnus-picon-find-face (address directories &optional exact)
(let* ((address (gnus-picon-split-address address))
(user (pop address))
(faddress address)
database directory result instance base)
(catch 'found
(dolist (database gnus-picon-databases)
(dolist (directory directories)
(setq address faddress
base (expand-file-name directory database))
(while address
(when (setq result (gnus-picon-find-image
(concat base "/" (mapconcat 'downcase
(reverse address)
"/")
"/" (downcase user) "/")))
(throw 'found result))
(if exact
(setq address nil)
(pop address)))
;; Kludge to search MISC as well. But not in "news".
(unless (string= directory "news")
(when (setq result (gnus-picon-find-image
(concat base "/MISC/" user "/")))
(throw 'found result))))))))
(defun gnus-picon-find-image (directory)
(let ((types gnus-picon-file-types)
found type file)
(while (and (not found)
(setq type (pop types)))
(setq found (file-exists-p (setq file (concat directory "face." type)))))
(if found
file
nil)))
(defun gnus-picon-insert-glyph (glyph category &optional nostring)
"Insert GLYPH into the buffer.
GLYPH can be either a glyph or a string. When NOSTRING, no textual
replacement is added."
;; Using NOSTRING prevents wrong BBDB entries with `gnus-picon-style' set to
;; 'right.
(if (stringp glyph)
(insert glyph)
(gnus-add-wash-type category)
(gnus-add-image category (car glyph))
(gnus-put-image (car glyph) (unless nostring (cdr glyph)) category)))
(defun gnus-picon-create-glyph (file)
(or (cdr (assoc file gnus-picon-glyph-alist))
(cdar (push (cons file (apply 'gnus-create-image
file nil nil
gnus-picon-properties))
gnus-picon-glyph-alist))))
;;; Functions that does picon transformations:
(declare-function image-size "image.c" (spec &optional pixels frame))
(defun gnus-picon-transform-address (header category)
(gnus-with-article-headers
(let ((addresses
(mail-header-parse-addresses
;; mail-header-parse-addresses does not work (reliably) on
;; decoded headers.
(or
(ignore-errors
(mail-encode-encoded-word-string
(or (mail-fetch-field header) "")))
(mail-fetch-field header))))
spec file point cache len)
(dolist (address addresses)
(setq address (car address))
(when (and (stringp address)
(setq spec (gnus-picon-split-address address)))
(if (setq cache (cdr (assoc address gnus-picon-cache)))
(setq spec cache)
(when (setq file (or (gnus-picon-find-face
address gnus-picon-user-directories)
(gnus-picon-find-face
(concat "unknown@"
(mapconcat
'identity (cdr spec) "."))
gnus-picon-user-directories)))
(setcar spec (cons (gnus-picon-create-glyph file)
(car spec))))
(dotimes (i (- (length spec)
(if gnus-picon-inhibit-top-level-domains
2 1)))
(when (setq file (gnus-picon-find-face
(concat "unknown@"
(mapconcat
'identity (nthcdr (1+ i) spec) "."))
gnus-picon-domain-directories t))
(setcar (nthcdr (1+ i) spec)
(cons (gnus-picon-create-glyph file)
(nth (1+ i) spec)))))
(setq spec (nreverse spec))
(push (cons address spec) gnus-picon-cache))
(gnus-article-goto-header header)
(mail-header-narrow-to-field)
(case gnus-picon-style
(right
(when (= (length addresses) 1)
(setq len (apply '+ (mapcar (lambda (x)
(condition-case nil
(car (image-size (car x)))
(error 0))) spec)))
(when (> len 0)
(goto-char (point-at-eol))
(insert (propertize
" " 'display
(cons 'space
(list :align-to (- (window-width) 1 len))))))
(goto-char (point-at-eol))
(setq point (point-at-eol))
(dolist (image spec)
(unless (stringp image)
(goto-char point)
(gnus-picon-insert-glyph image category 'nostring)))))
(inline
(when (search-forward address nil t)
(delete-region (match-beginning 0) (match-end 0))
(setq point (point))
(while spec
(goto-char point)
(if (> (length spec) 2)
(insert ".")
(if (= (length spec) 2)
(insert "@")))
(gnus-picon-insert-glyph (pop spec) category))))))))))
(defun gnus-picon-transform-newsgroups (header)
(interactive)
(gnus-with-article-headers
(gnus-article-goto-header header)
(mail-header-narrow-to-field)
(let ((groups (message-tokenize-header (mail-fetch-field header)))
spec file point)
(dolist (group groups)
(unless (setq spec (cdr (assoc group gnus-picon-cache)))
(setq spec (nreverse (split-string group "[.]")))
(dotimes (i (length spec))
(when (setq file (gnus-picon-find-face
(concat "unknown@"
(mapconcat
'identity (nthcdr i spec) "."))
gnus-picon-news-directories t))
(setcar (nthcdr i spec)
(cons (gnus-picon-create-glyph file)
(nth i spec)))))
(push (cons group spec) gnus-picon-cache))
(when (search-forward group nil t)
(delete-region (match-beginning 0) (match-end 0))
(save-restriction
(narrow-to-region (point) (point))
(while spec
(goto-char (point-min))
(if (> (length spec) 1)
(insert "."))
(gnus-picon-insert-glyph (pop spec) 'newsgroups-picon))
(goto-char (point-max))))))))
;;; Commands:
;; #### NOTE: the test for buffer-read-only is the same as in
;; article-display-[x-]face. See the comment up there.
;;;###autoload
(defun gnus-treat-from-picon ()
"Display picons in the From header.
If picons are already displayed, remove them."
(interactive)
(let ((wash-picon-p buffer-read-only))
(gnus-with-article-buffer
(if (and wash-picon-p (memq 'from-picon gnus-article-wash-types))
(gnus-delete-images 'from-picon)
(gnus-picon-transform-address "from" 'from-picon)))))
;;;###autoload
(defun gnus-treat-mail-picon ()
"Display picons in the Cc and To headers.
If picons are already displayed, remove them."
(interactive)
(let ((wash-picon-p buffer-read-only))
(gnus-with-article-buffer
(if (and wash-picon-p (memq 'mail-picon gnus-article-wash-types))
(gnus-delete-images 'mail-picon)
(gnus-picon-transform-address "cc" 'mail-picon)
(gnus-picon-transform-address "to" 'mail-picon)))))
;;;###autoload
(defun gnus-treat-newsgroups-picon ()
"Display picons in the Newsgroups and Followup-To headers.
If picons are already displayed, remove them."
(interactive)
(let ((wash-picon-p buffer-read-only))
(gnus-with-article-buffer
(if (and wash-picon-p (memq 'newsgroups-picon gnus-article-wash-types))
(gnus-delete-images 'newsgroups-picon)
(gnus-picon-transform-newsgroups "newsgroups")
(gnus-picon-transform-newsgroups "followup-to")))))
(provide 'gnus-picon)
;;; gnus-picon.el ends here
|
