1 ;;; gnus-picon.el --- displaying pretty icons in Gnus
2 ;; Copyright (C) 1996,97,98 Free Software Foundation, Inc.
4 ;; Author: Wes Hardaker <hardaker@ece.ucdavis.edu>
5 ;; Keywords: news xpm annotation glyph faces
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
30 (require 'annotations)
38 "Show pictures of people, domains, and newsgroups (XEmacs).
39 For this to work, you must add gnus-group-display-picons to the
40 gnus-summary-display-hook or to the gnus-article-display-hook
41 depending on what gnus-picons-display-where is set to. You must
42 also add gnus-article-display-picons to gnus-article-display-hook."
45 (defcustom gnus-picons-display-where 'picons
46 "Where to display the group and article icons.
47 Legal values are `article' and `picons'."
48 :type '(choice symbol string)
51 (defcustom gnus-picons-has-modeline-p t
52 "*Whether the picons window should have a modeline.
53 This is only useful if `gnus-picons-display-where' is `picons'."
57 (defcustom gnus-picons-database "/usr/local/faces"
58 "*Defines the location of the faces database.
59 For information on obtaining this database of pretty pictures, please
60 see http://www.cs.indiana.edu/picons/ftp/index.html"
64 (defcustom gnus-picons-news-directories '("news")
65 "*List of directories to search for newsgroups faces."
66 :type '(repeat string)
68 (define-obsolete-variable-alias 'gnus-picons-news-directory
69 'gnus-picons-news-directories)
71 (defcustom gnus-picons-user-directories '("local" "users" "usenix" "misc")
72 "*List of directories to search for user faces."
73 :type '(repeat string)
76 (defcustom gnus-picons-domain-directories '("domains")
77 "*List of directories to search for domain faces.
78 Some people may want to add \"unknown\" to this list."
79 :type '(repeat string)
82 (defcustom gnus-picons-refresh-before-display nil
83 "*If non-nil, display the article buffer before computing the picons."
87 (defcustom gnus-picons-group-excluded-groups nil
88 "*If this regexp matches the group name, group picons will be disabled."
92 (defcustom gnus-picons-x-face-file-name
93 (format "/tmp/picon-xface.%s.xbm" (user-login-name))
94 "*The name of the file in which to store the converted X-face header."
98 (defcustom gnus-picons-convert-x-face (format "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm | pbmtoxbm > %s" gnus-picons-x-face-file-name)
99 "*Command to convert the x-face header into a xbm file."
103 (defcustom gnus-picons-display-as-address t
104 "*If t display textual email addresses along with pictures."
108 (defcustom gnus-picons-file-suffixes
110 (let ((types (list "xbm")))
111 (when (featurep 'gif)
113 (when (featurep 'xpm)
116 "*List of suffixes on picon file names to try."
117 :type '(repeat string)
120 (defcustom gnus-picons-display-article-move-p t
121 "*Whether to move point to first empty line when displaying picons.
122 This has only an effect if `gnus-picons-display-where' has value `article'."
126 (defcustom gnus-picons-clear-cache-on-shutdown t
127 "*Whether to clear the picons cache when exiting gnus.
128 Gnus caches every picons it finds while it is running. This saves
129 some time in the search process but eats some memory. If this
130 variable is set to nil, Gnus will never clear the cache itself; you
131 will have to manually call `gnus-picons-clear-cache' to clear it.
132 Otherwise the cache will be cleared every time you exit Gnus."
136 (defcustom gnus-picons-piconsearch-url nil
137 "*The url to query for picons. Setting this to nil will disable it.
138 The only publicly available address currently known is
139 http://www.cs.indiana.edu:800/piconsearch. If you know of any other,
140 please tell me so that we can list it."
141 :type '(choice (const :tag "Disable" :value nil)
142 (const :tag "www.cs.indiana.edu"
143 :value "http://www.cs.indiana.edu:800/piconsearch")
147 (defface gnus-picons-xbm-face
148 '((((background dark))
149 (:foreground "green" :background "black"))
151 (:foreground "black" :background "blue")))
152 "Face to show xbm picons in."
155 ;;; Internal variables:
157 (defvar gnus-picons-processes-alist nil
158 "Picons processes currently running and their environment.")
159 (defvar gnus-picons-glyph-alist nil
160 "Picons glyphs cache.
161 List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
162 (defvar gnus-picons-url-alist nil
163 "Picons file names cache.
164 List of pairs (KEY . NAME) where KEY is (USER HOST DBS) and NAME is an URL.")
166 (defvar gnus-picons-jobs-alist nil
167 "List of jobs that still need be done.
168 This is a list of (SYM-ANN TAG ARGS...) where SYM-ANN three annotations list,
169 TAG is one of `picon' or `search' indicating that the job should query a
170 picon or do a search for picons file names, and ARGS is some additionnal
171 arguments necessary for the job.")
173 (defvar gnus-picons-job-already-running nil
174 "Lock to ensure only one stream of http requests is running.")
178 (defun gnus-picons-remove-all ()
179 "Removes all picons from the Gnus display(s)."
181 (map-extents (function (lambda (ext unused) (delete-annotation ext) nil))
182 nil nil nil nil nil 'gnus-picon)
183 (setq gnus-picons-jobs-alist '())
184 ;; notify running job that it may have been preempted
185 (if (and (listp gnus-picons-job-already-running)
186 gnus-picons-job-already-running)
187 (setq gnus-picons-job-already-running t)))
189 (defun gnus-get-buffer-name (variable)
190 "Returns the buffer name associated with the contents of a variable."
191 (let ((buf (gnus-get-buffer-create (gnus-window-to-buffer-helper
193 (assq variable gnus-window-to-buffer))))))
197 (defun gnus-picons-buffer-name ()
198 (cond ((or (stringp gnus-picons-display-where)
199 (bufferp gnus-picons-display-where))
200 gnus-picons-display-where)
201 ((eq gnus-picons-display-where 'picons)
202 (if gnus-single-article-buffer
204 (concat "*Picons " gnus-newsgroup-name "*")))
206 (gnus-get-buffer-name gnus-picons-display-where))))
208 (defun gnus-picons-kill-buffer ()
209 (let ((buf (get-buffer (gnus-picons-buffer-name))))
210 (if (buffer-live-p buf)
213 (defun gnus-picons-setup-buffer ()
214 (let ((name (gnus-picons-buffer-name)))
216 (if (get-buffer name)
218 (set-buffer (gnus-get-buffer-create name))
219 (buffer-disable-undo)
220 (setq buffer-read-only t)
221 (add-hook 'gnus-summary-prepare-exit-hook 'gnus-picons-kill-buffer))
224 (defun gnus-picons-set-buffer ()
225 (set-buffer (gnus-picons-setup-buffer))
226 (goto-char (point-min))
227 (if (and (eq gnus-picons-display-where 'article)
228 gnus-picons-display-article-move-p)
229 (if (search-forward "\n\n" nil t)
231 (goto-char (point-max)))
232 (setq buffer-read-only t)
233 (unless gnus-picons-has-modeline-p
234 (set-specifier has-modeline-p
235 (list (list (current-buffer)
236 (cons nil gnus-picons-has-modeline-p)))))))
238 (defun gnus-picons-prepare-for-annotations ()
239 "Prepare picons buffer for putting annotations."
240 ;; let drawing catch up
241 (when gnus-picons-refresh-before-display
243 (gnus-picons-set-buffer)
244 (gnus-picons-remove-all))
246 (defun gnus-picons-make-annotation (&rest args)
247 (let ((annot (apply 'make-annotation args)))
248 (set-extent-property annot 'gnus-picon t)
249 (set-extent-property annot 'duplicable t)
252 (defun gnus-picons-article-display-x-face ()
253 "Display the x-face header bitmap in the 'gnus-picons-display-where buffer."
254 (let ((gnus-article-x-face-command 'gnus-picons-display-x-face))
255 (gnus-article-display-x-face)))
257 (defun gnus-picons-x-face-sentinel (process event)
258 (when (memq process gnus-picons-processes-alist)
259 (setq gnus-picons-processes-alist
260 (delq process gnus-picons-processes-alist))
261 (gnus-picons-set-buffer)
262 (gnus-picons-make-annotation (make-glyph gnus-picons-x-face-file-name)
264 (when (file-exists-p gnus-picons-x-face-file-name)
265 (delete-file gnus-picons-x-face-file-name))))
267 (defun gnus-picons-display-x-face (beg end)
268 "Function to display the x-face header in the picons window.
269 To use: (setq gnus-article-x-face-command 'gnus-picons-display-x-face)"
271 (if (featurep 'xface)
272 ;; Use builtin support
274 ;; Don't remove this binding, it is really needed: when
275 ;; `gnus-picons-set-buffer' changes buffer (like when it is
276 ;; set to display picons outside of the article buffer), BEG
277 ;; and END still refer the buffer current now !
278 (let ((buf (current-buffer)))
279 (gnus-picons-set-buffer)
280 (gnus-picons-make-annotation
282 :data (concat "X-Face: " (buffer-substring beg end buf)))
283 nil 'text nil nil nil t)))
284 ;; convert the x-face header to a .xbm file
285 (let* ((process-connection-type nil)
286 (process (start-process-shell-command "gnus-x-face" nil
287 gnus-picons-convert-x-face)))
288 (push process gnus-picons-processes-alist)
289 (process-kill-without-query process)
290 (set-process-sentinel process 'gnus-picons-x-face-sentinel)
291 (process-send-region process beg end)
292 (process-send-eof process))))
294 (defun gnus-article-display-picons ()
295 "Display faces for an author and her domain in gnus-picons-display-where."
298 (when (and (featurep 'xpm)
299 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
300 (setq from (mail-fetch-field "from"))
301 (setq from (downcase (or (cadr (mail-extract-address-components
304 (or (setq at-idx (string-match "@" from))
305 (setq at-idx (length from))))
307 (let ((username (downcase (substring from 0 at-idx)))
308 (addrs (if (eq at-idx (length from))
309 (if gnus-local-domain
310 (message-tokenize-header gnus-local-domain "."))
311 (message-tokenize-header (substring from (1+ at-idx))
313 (gnus-picons-prepare-for-annotations)
314 (gnus-group-display-picons)
315 (if (null gnus-picons-piconsearch-url)
317 (gnus-picons-display-pairs (gnus-picons-lookup-pairs
319 gnus-picons-domain-directories)
320 gnus-picons-display-as-address
322 (if (and gnus-picons-display-as-address addrs)
323 (gnus-picons-make-annotation
324 [string :data "@"] nil 'text nil nil nil t))
325 (gnus-picons-display-picon-or-name
326 (gnus-picons-lookup-user username addrs)
328 (push (list 'gnus-article-annotations 'search username addrs
329 gnus-picons-domain-directories t)
330 gnus-picons-jobs-alist)
331 (gnus-picons-next-job)))))))
333 (defun gnus-group-display-picons ()
334 "Display icons for the group in the `gnus-picons-display-where' buffer."
336 (when (and (featurep 'xpm)
337 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
338 (or (null gnus-picons-group-excluded-groups)
339 (not (string-match gnus-picons-group-excluded-groups
340 gnus-newsgroup-name))))
342 (gnus-picons-prepare-for-annotations)
343 (if (null gnus-picons-piconsearch-url)
344 (gnus-picons-display-pairs
345 (gnus-picons-lookup-pairs
346 (reverse (message-tokenize-header
347 (gnus-group-real-name gnus-newsgroup-name)
349 gnus-picons-news-directories)
351 (push (list 'gnus-group-annotations 'search nil
352 (message-tokenize-header
353 (gnus-group-real-name gnus-newsgroup-name) ".")
354 (if (listp gnus-picons-news-directories)
355 gnus-picons-news-directories
356 (list gnus-picons-news-directories))
358 gnus-picons-jobs-alist)
359 (gnus-picons-next-job))
361 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))
363 (defun gnus-picons-lookup-internal (addrs dir)
364 (setq dir (expand-file-name dir gnus-picons-database))
365 (gnus-picons-try-face (dolist (part (reverse addrs) dir)
366 (setq dir (expand-file-name part dir)))))
368 (defun gnus-picons-lookup (addrs dirs)
369 "Lookup the picon for ADDRS in databases DIRS.
370 Returns the picon filename or NIL if none found."
372 (while (and dirs (null result))
373 (setq result (gnus-picons-lookup-internal addrs (pop dirs))))
376 (defun gnus-picons-lookup-user-internal (user domains)
377 (let ((dirs gnus-picons-user-directories)
378 domains-tmp dir picon)
379 (while (and dirs (null picon))
380 (setq domains-tmp domains
382 (while (and domains-tmp
383 (null (setq picon (gnus-picons-lookup-internal
384 (cons user domains-tmp) dir))))
386 ;; Also make a try in MISC subdir
388 (setq picon (gnus-picons-lookup-internal (list user "MISC") dir))))
391 (defun gnus-picons-lookup-user (user domains)
392 "Lookup the picon for USER at DOMAINS.
393 USER is a string containing a name.
394 DOMAINS is a list of strings from the fully qualified domain name."
395 (or (gnus-picons-lookup-user-internal user domains)
396 (gnus-picons-lookup-user-internal "unknown" domains)))
398 (defun gnus-picons-lookup-pairs (domains directories)
399 "Lookup picons for DOMAINS and all its parents in DIRECTORIES.
400 Returns a list of PAIRS whose CAR is the picon filename or NIL if
401 none, and whose CDR is the corresponding element of DOMAINS."
403 (setq directories (if (listp directories)
407 (push (list (gnus-picons-lookup (cons "unknown" domains) directories)
412 (defun gnus-picons-display-picon-or-name (picon name &optional right-p)
413 (cond (picon (gnus-picons-display-glyph picon name right-p))
414 (gnus-picons-display-as-address (list (gnus-picons-make-annotation
415 (vector 'string :data name)
417 nil nil nil right-p)))))
419 (defun gnus-picons-display-pairs (pairs &optional bar-p dot-p right-p)
420 "Display picons in list PAIRS."
421 (let ((domain-p (and gnus-picons-display-as-address dot-p))
423 (when (and bar-p domain-p right-p)
424 (setq picons (gnus-picons-display-glyph
425 (let ((gnus-picons-file-suffixes '("xbm")))
426 (gnus-picons-try-face
427 gnus-xmas-glyph-directory "bar."))
429 (while (setq pair (pop pairs))
430 (setq picons (nconc picons
431 (gnus-picons-display-picon-or-name
432 (car pair) (cadr pair) right-p)
433 (if (and domain-p pairs)
434 (list (gnus-picons-make-annotation
435 (vector 'string :data dot-p)
436 nil 'text nil nil nil right-p))))))
439 (defun gnus-picons-try-face (dir &optional filebase)
440 (let* ((dir (file-name-as-directory dir))
441 (filebase (or filebase "face."))
442 (key (concat dir filebase))
443 (glyph (cdr (assoc key gnus-picons-glyph-alist)))
444 (suffixes gnus-picons-file-suffixes)
446 (while (setq suf (pop suffixes))
447 (when (file-exists-p (setq f (expand-file-name
448 (concat filebase suf)
451 glyph (make-glyph f))
452 (when (equal suf "xbm")
453 (set-glyph-face glyph 'gnus-picons-xbm-face))
454 (push (cons key glyph) gnus-picons-glyph-alist)))
457 (defun gnus-picons-display-glyph (glyph &optional part rightp)
458 (let ((new (gnus-picons-make-annotation
459 glyph (point) 'text nil nil nil rightp)))
460 (when (and part gnus-picons-display-as-address)
462 new (cons new (make-glyph (vector 'string :data part))))
463 (set-annotation-action new 'gnus-picons-action-toggle))
466 (if (and (eq major-mode 'gnus-article-mode)
467 (not gnus-picons-display-as-address)
469 (list (gnus-picons-make-annotation [string :data " "] (point)
470 'text nil nil nil rightp))))))
472 (defun gnus-picons-action-toggle (data)
475 (let* ((annot (car data))
476 (glyph (annotation-glyph annot)))
477 (set-annotation-glyph annot (cdr data))
478 (set-annotation-data annot (cons annot glyph))))
480 (defun gnus-picons-clear-cache ()
481 "Clear the picons cache."
483 (setq gnus-picons-glyph-alist nil
484 gnus-picons-url-alist nil))
486 (gnus-add-shutdown 'gnus-picons-close 'gnus)
488 (defun gnus-picons-close ()
489 "Shut down the picons."
490 (if gnus-picons-clear-cache-on-shutdown
491 (gnus-picons-clear-cache)))
493 ;;; Query a remote DB. This requires some stuff from w3 !
498 (defun gnus-picons-url-retrieve (url fn arg)
499 (let ((old-asynch (default-value 'url-be-asynchronous))
500 (url-working-buffer (generate-new-buffer " *picons*"))
501 (url-package-name "Gnus")
502 (url-package-version gnus-version-number)
504 (setq-default url-be-asynchronous t)
506 (set-buffer url-working-buffer)
507 (setq url-be-asynchronous t
508 url-current-callback-data arg
509 url-current-callback-func fn)
510 (url-retrieve url t))
511 (setq-default url-be-asynchronous old-asynch)))
513 (defun gnus-picons-make-glyph (type)
514 "Make a TYPE glyph using current buffer as data. Handles xbm nicely."
515 (cond ((null type) nil)
516 ((eq type 'xbm) (let ((fname (make-temp-name "/tmp/picon")))
517 (write-region (point-min) (point-max) fname
519 (prog1 (make-glyph (vector 'xbm :file fname))
520 (delete-file fname))))
521 (t (make-glyph (vector type :data (buffer-string))))))
523 ;;; Parsing of piconsearch result page.
526 ;; 1 - each value field has the form: "<strong>key</strong> = <kbd>value</kbd>"
527 ;; 2 - a "<p>" separates the keywords from the results
528 ;; 3 - every results begins by the path within the database at the beginning
529 ;; of the line in raw text.
530 ;; 3b - and the href following it is the preferred image type.
532 ;; if 1 or 2 is not met, it will probably cause an error. The other
533 ;; will go undetected
535 (defun gnus-picons-parse-value (name)
536 (goto-char (point-min))
537 (re-search-forward (concat "<strong>"
539 "</strong> *= *<kbd> *\\([^ <][^<]*\\) *</kbd>"))
540 (buffer-substring (match-beginning 1) (match-end 1)))
542 (defun gnus-picons-parse-filenames ()
543 ;; returns an alist of ((USER ADDRS DB) . URL)
544 (let* ((case-fold-search t)
545 (user (gnus-picons-parse-value "user"))
546 (host (gnus-picons-parse-value "host"))
547 (dbs (message-tokenize-header (gnus-picons-parse-value "db") " "))
551 "^\\(" (mapconcat 'identity dbs "\\|") "\\)/"
553 "\\(\\(" (replace-in-string host "\\." "/\\|" t) "/\\|MISC/\\)*\\)"
555 "\\(" (regexp-quote user) "\\|unknown\\)/"
557 cur-db cur-host cur-user types res)
558 ;; now point will be somewhere in the header. Find beginning of
560 (re-search-forward "<p>[ \t\n]*")
561 (while (re-search-forward start-re nil t)
562 (setq cur-db (buffer-substring (match-beginning 1) (match-end 1))
563 cur-host (buffer-substring (match-beginning 2) (match-end 2))
564 cur-user (buffer-substring (match-beginning 4) (match-end 4))
565 cur-host (nreverse (message-tokenize-header cur-host "/")))
566 ;; XXX - KLUDGE: there is a blank picon in news/MISC/unknown
567 (unless (and (string-equal cur-db "news")
568 (string-equal cur-user "unknown")
569 (equal cur-host '("MISC")))
570 ;; ok now we have found an entry (USER HOST DB), find the
571 ;; corresponding picon URL
573 ;; restrict region to this entry
574 (narrow-to-region (point) (search-forward "<br>"))
575 (goto-char (point-min))
576 (setq types gnus-picons-file-suffixes)
578 (not (re-search-forward
579 (concat "<a[ \t\n]+href=\"\\([^\"]*\\."
580 (regexp-quote (car types)) "\\)\"")
583 (push (cons (list cur-user cur-host cur-db)
584 (buffer-substring (match-beginning 1) (match-end 1)))
588 ;;; picon network display functions :
590 (defun gnus-picons-network-display-internal (sym-ann glyph part right-p)
591 (gnus-picons-set-buffer)
592 (gnus-picons-display-picon-or-name glyph part right-p)
593 (gnus-picons-next-job-internal))
595 (defun gnus-picons-network-display-callback (url part sym-ann right-p)
596 (let ((glyph (gnus-picons-make-glyph (cdr (assoc url-current-mime-type
597 w3-image-mappings)))))
598 (kill-buffer (current-buffer))
599 (push (cons url glyph) gnus-picons-glyph-alist)
600 ;; only do the job if it has not been preempted.
601 (if (equal gnus-picons-job-already-running
602 (list sym-ann 'picon url part right-p))
603 (gnus-picons-network-display-internal sym-ann glyph part right-p)
604 (gnus-picons-next-job-internal))))
606 (defun gnus-picons-network-display (url part sym-ann right-p)
607 (let ((cache (assoc url gnus-picons-glyph-alist)))
608 (if (or cache (null url))
609 (gnus-picons-network-display-internal sym-ann (cdr cache) part right-p)
610 (gnus-picons-url-retrieve url 'gnus-picons-network-display-callback
611 (list url part sym-ann right-p)))))
613 ;;; search job functions
615 (defun gnus-picons-network-search-internal (user addrs dbs sym-ann right-p
617 (let (curkey dom pfx url dbs-tmp cache new-jobs)
618 ;; First do the domain search
619 (dolist (part (if right-p
622 (setq pfx (nconc (list part) pfx)
623 dom (cond ((and dom right-p) (concat part "." dom))
624 (dom (concat dom "." part))
626 curkey (list "unknown" dom dbs))
627 (when (null (setq cache (assoc curkey gnus-picons-url-alist)))
628 ;; This one is not yet in the cache, create a new entry
629 ;; Search for an entry
632 (while (and dbs-tmp (null url))
633 (setq url (or (cdr (assoc (list "unknown" pfx (car dbs-tmp)) fnames))
635 ;; This is the first component. Try the
636 ;; catch-all MISC component
637 (cdr (assoc (list "unknown"
642 (push (setq cache (cons curkey url)) gnus-picons-url-alist))
643 ;; Put this glyph in the job list
644 (if (and (not (eq dom part)) gnus-picons-display-as-address)
645 (push (list sym-ann "." right-p) new-jobs))
646 (push (list sym-ann 'picon (cdr cache) part right-p) new-jobs))
647 ;; next, the user search
649 (setq curkey (list user dom gnus-picons-user-directories))
650 (if (null (setq cache (assoc curkey gnus-picons-url-alist)))
651 (let ((users (list user "unknown"))
652 dirs usr domains-tmp dir picon)
653 (while (and users (null picon))
654 (setq dirs gnus-picons-user-directories
656 (while (and dirs (null picon))
657 (setq domains-tmp addrs
659 (while (and domains-tmp
660 (null (setq picon (assoc (list usr domains-tmp dir)
664 (setq picon (assoc (list usr '("MISC") dir) fnames)))))
665 (push (setq cache (cons curkey (cdr picon)))
666 gnus-picons-url-alist)))
667 (if (and gnus-picons-display-as-address new-jobs)
668 (push (list sym-ann "@" right-p) new-jobs))
669 (push (list sym-ann 'picon (cdr cache) user right-p) new-jobs))
670 (if (and gnus-picons-display-as-address (not right-p))
671 (push (list sym-ann 'bar right-p) new-jobs))
672 ;; only put the jobs in the queue if this job has not been preempted.
673 (if (equal gnus-picons-job-already-running
674 (list sym-ann 'search user addrs dbs right-p))
675 (setq gnus-picons-jobs-alist
676 (nconc (if (and gnus-picons-display-as-address right-p)
677 (list (list sym-ann 'bar right-p)))
679 gnus-picons-jobs-alist)))
680 (gnus-picons-next-job-internal)))
682 (defun gnus-picons-network-search-callback (user addrs dbs sym-ann right-p)
683 (gnus-picons-network-search-internal user addrs dbs sym-ann right-p
684 (prog1 (gnus-picons-parse-filenames)
685 (kill-buffer (current-buffer)))))
687 ;; Initiate a query on the picon database
688 (defun gnus-picons-network-search (user addrs dbs sym-ann right-p)
689 (let* ((host (mapconcat 'identity addrs "."))
690 (key (list (or user "unknown") host (if user
691 gnus-picons-user-directories
693 (cache (assoc key gnus-picons-url-alist)))
695 (gnus-picons-url-retrieve
696 (concat gnus-picons-piconsearch-url
697 "?user=" (w3-form-encode-xwfu (or user "unknown"))
698 "&host=" (w3-form-encode-xwfu host)
699 "&db=" (mapconcat 'w3-form-encode-xwfu
702 gnus-picons-user-directories)
705 'gnus-picons-network-search-callback
706 (list user addrs dbs sym-ann right-p))
707 (gnus-picons-network-search-internal user addrs dbs sym-ann right-p))))
709 ;;; Main jobs dispatcher function
711 (defun gnus-picons-next-job-internal ()
712 (if (setq gnus-picons-job-already-running (pop gnus-picons-jobs-alist))
713 (let* ((job gnus-picons-job-already-running)
717 (cond ((stringp tag);; (SYM-ANN "..." RIGHT-P)
718 (gnus-picons-network-display-internal sym-ann nil tag
721 (gnus-picons-network-display-internal
723 (let ((gnus-picons-file-suffixes '("xbm")))
724 (gnus-picons-try-face
725 gnus-xmas-glyph-directory "bar."))
727 ((eq 'search tag);; (SYM-ANN 'search USER ADDRS DBS RIGHT-P)
728 (gnus-picons-network-search
729 (pop job) (pop job) (pop job) sym-ann (pop job)))
730 ((eq 'picon tag);; (SYM-ANN 'picon URL PART RIGHT-P)
731 (gnus-picons-network-display
732 (pop job) (pop job) sym-ann (pop job)))
733 (t (setq gnus-picons-job-already-running nil)
734 (error "Unknown picon job tag %s" tag)))))))
736 (defun gnus-picons-next-job ()
737 "Start processing the job queue if it is not in progress."
738 (unless gnus-picons-job-already-running
739 (gnus-picons-next-job-internal)))
741 (provide 'gnus-picon)
743 ;;; gnus-picon.el ends here