1 ;;; gnus-picon.el --- displaying pretty icons in Gnus
3 ;; Copyright (C) 1996, 1997, 1998, 1999, 2000
4 ;; Free Software Foundation, Inc.
6 ;; Author: Wes Hardaker <hardaker@ece.ucdavis.edu>
7 ;; Keywords: news xpm annotation glyph faces
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
32 (require 'annotations)
40 "Show pictures of people, domains, and newsgroups (XEmacs).
41 For this to work, you must switch on the `gnus-treat-display-picons'
45 (defcustom gnus-picons-display-where 'picons
46 "Where to display the group and article icons.
47 Valid 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-display-as-address t
93 "*If t display textual email addresses along with pictures."
97 (defcustom gnus-picons-file-suffixes
99 (let ((types (list "xbm")))
100 (when (featurep 'gif)
102 (when (featurep 'xpm)
105 "*List of suffixes on picon file names to try."
106 :type '(repeat string)
109 (defcustom gnus-picons-display-article-move-p nil
110 "*Whether to move point to first empty line when displaying picons.
111 This has only an effect if `gnus-picons-display-where' has value `article'."
115 (defcustom gnus-picons-clear-cache-on-shutdown t
116 "*Whether to clear the picons cache when exiting gnus.
117 Gnus caches every picons it finds while it is running. This saves
118 some time in the search process but eats some memory. If this
119 variable is set to nil, Gnus will never clear the cache itself; you
120 will have to manually call `gnus-picons-clear-cache' to clear it.
121 Otherwise the cache will be cleared every time you exit Gnus."
125 (defcustom gnus-picons-piconsearch-url nil
126 "*The url to query for picons. Setting this to nil will disable it.
127 The only publicly available address currently known is
128 http://www.cs.indiana.edu:800/piconsearch. If you know of any other,
129 please tell me so that we can list it."
130 :type '(choice (const :tag "Disable" :value nil)
131 (const :tag "www.cs.indiana.edu"
132 :value "http://www.cs.indiana.edu:800/piconsearch")
136 (defface gnus-picons-xbm-face '((t (:foreground "black" :background "white")))
137 "Face to show xbm picons in."
140 (defface gnus-picons-face '((t (:foreground "black" :background "white")))
141 "Face to show picons in."
144 (defcustom gnus-picons-setup-hook nil
145 "Hook run in Picons buffers."
149 ;;; Internal variables:
151 (defvar gnus-picons-setup-p nil)
152 (defvar gnus-picons-processes-alist nil
153 "Picons processes currently running and their environment.")
154 (defvar gnus-picons-glyph-alist nil
155 "Picons glyphs cache.
156 List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
157 (defvar gnus-picons-url-alist nil
158 "Picons file names cache.
159 List of pairs (KEY . NAME) where KEY is (USER HOST DBS) and NAME is an URL.")
161 (defvar gnus-picons-jobs-alist nil
162 "List of jobs that still need be done.
163 This is a list of (SYM-ANN TAG ARGS...) where SYM-ANN three annotations list,
164 TAG is one of `picon' or `search' indicating that the job should query a
165 picon or do a search for picons file names, and ARGS is some additionnal
166 arguments necessary for the job.")
168 (defvar gnus-picons-job-already-running nil
169 "Lock to ensure only one stream of http requests is running.")
173 (defun gnus-picons-remove-all ()
174 "Removes all picons from the Gnus display(s)."
176 (map-extents (function (lambda (ext unused) (delete-annotation ext) nil))
177 nil nil nil nil nil 'gnus-picon)
178 (setq gnus-picons-jobs-alist '())
179 ;; notify running job that it may have been preempted
180 (if (and (listp gnus-picons-job-already-running)
181 gnus-picons-job-already-running)
182 (setq gnus-picons-job-already-running t)))
184 (defun gnus-get-buffer-name (variable)
185 "Returns the buffer name associated with the contents of a variable."
186 (let ((buf (gnus-get-buffer-create
187 (gnus-window-to-buffer-helper
188 (cdr (assq variable gnus-window-to-buffer))))))
192 (defun gnus-picons-buffer-name ()
193 (cond ((or (stringp gnus-picons-display-where)
194 (bufferp gnus-picons-display-where))
195 gnus-picons-display-where)
196 ((eq gnus-picons-display-where 'picons)
197 (if gnus-single-article-buffer
199 (concat "*Picons " gnus-newsgroup-name "*")))
201 (gnus-get-buffer-name gnus-picons-display-where))))
203 (defun gnus-picons-kill-buffer ()
204 (let ((buf (get-buffer (gnus-picons-buffer-name))))
205 (when (and (buffer-live-p buf)
206 (string-match "Picons" (buffer-name buf)))
209 (defun gnus-picons-setup-buffer ()
210 (let ((name (gnus-picons-buffer-name)))
212 (if (and (get-buffer name)
213 (with-current-buffer name
214 gnus-picons-setup-p))
216 (set-buffer (gnus-get-buffer-create name))
217 (buffer-disable-undo)
218 (setq buffer-read-only t)
219 (run-hooks 'gnus-picons-setup-hook)
220 (set (make-local-variable 'gnus-picons-setup-p) 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-article-display-picons ()
253 "Display faces for an author and her domain in gnus-picons-display-where."
256 (when (and (featurep 'xpm)
257 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
258 (setq from (mail-fetch-field "from"))
259 (setq from (downcase (or (cadr (mail-extract-address-components
262 (or (setq at-idx (string-match "@" from))
263 (setq at-idx (length from))))
265 (let ((username (downcase (substring from 0 at-idx)))
266 (addrs (if (eq at-idx (length from))
267 (if gnus-local-domain
268 (message-tokenize-header gnus-local-domain "."))
269 (message-tokenize-header (substring from (1+ at-idx))
271 (gnus-picons-prepare-for-annotations)
272 (gnus-group-display-picons)
273 (unless gnus-picons-display-article-move-p
274 (let ((buffer-read-only nil)
275 (case-fold-search t))
276 (when (re-search-forward "^From *: *" nil t)
277 (when (search-forward from (gnus-point-at-eol) t)
278 (gnus-put-text-property
279 (match-beginning 0) (match-end 0)
281 (if (null gnus-picons-piconsearch-url)
283 (gnus-picons-display-pairs (gnus-picons-lookup-pairs
285 gnus-picons-domain-directories)
286 gnus-picons-display-as-address
288 (if (and gnus-picons-display-as-address addrs)
289 (gnus-picons-make-annotation
290 [string :data "@"] nil 'text nil nil nil t))
291 (gnus-picons-display-picon-or-name
292 (gnus-picons-lookup-user username addrs)
294 (push (list 'gnus-article-annotations 'search username addrs
295 gnus-picons-domain-directories t (point-marker))
296 gnus-picons-jobs-alist)
297 (gnus-picons-next-job)))))))
299 (defun gnus-group-display-picons ()
300 "Display icons for the group in the `gnus-picons-display-where' buffer."
302 (when (and (featurep 'xpm)
303 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
304 (or (null gnus-picons-group-excluded-groups)
305 (not (string-match gnus-picons-group-excluded-groups
306 gnus-newsgroup-name))))
307 (let* ((newsgroups (mail-fetch-field "newsgroups"))
309 (if (or gnus-picons-display-article-move-p
311 (list (gnus-group-real-name gnus-newsgroup-name))
312 (split-string newsgroups ",")))
315 (gnus-picons-prepare-for-annotations)
316 (while (setq group (pop groups))
317 (unless gnus-picons-display-article-move-p
318 (let ((buffer-read-only nil)
319 (case-fold-search t))
320 (goto-char (point-min))
321 (if (and (re-search-forward "^Newsgroups *: *" nil t)
322 (search-forward group (gnus-point-at-eol) t))
323 (gnus-put-text-property
324 (match-beginning 0) (match-end 0)
326 (let ((article-goto-body-goes-to-point-min-p nil))
329 (backward-char 1)))))
330 (if (null gnus-picons-piconsearch-url)
331 (gnus-picons-display-pairs
332 (gnus-picons-lookup-pairs
333 (reverse (split-string group "\\."))
334 gnus-picons-news-directories)
336 (push (list 'gnus-group-annotations 'search nil
337 (split-string group "\\.")
338 (if (listp gnus-picons-news-directories)
339 gnus-picons-news-directories
340 (list gnus-picons-news-directories))
342 gnus-picons-jobs-alist)
343 (gnus-picons-next-job))
345 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))))
347 (defun gnus-picons-lookup-internal (addrs dir)
348 (setq dir (expand-file-name dir gnus-picons-database))
349 (gnus-picons-try-face (dolist (part (reverse addrs) dir)
350 (setq dir (expand-file-name part dir)))))
352 (defun gnus-picons-lookup (addrs dirs)
353 "Lookup the picon for ADDRS in databases DIRS.
354 Returns the picon filename or NIL if none found."
356 (while (and dirs (null result))
357 (setq result (gnus-picons-lookup-internal addrs (pop dirs))))
360 (defun gnus-picons-lookup-user-internal (user domains)
361 (let ((dirs gnus-picons-user-directories)
362 domains-tmp dir picon)
363 (while (and dirs (null picon))
364 (setq domains-tmp domains
366 (while (and domains-tmp
367 (null (setq picon (gnus-picons-lookup-internal
368 (cons user domains-tmp) dir))))
370 ;; Also make a try in MISC subdir
372 (setq picon (gnus-picons-lookup-internal (list user "MISC") dir))))
375 (defun gnus-picons-lookup-user (user domains)
376 "Lookup the picon for USER at DOMAINS.
377 USER is a string containing a name.
378 DOMAINS is a list of strings from the fully qualified domain name."
379 (or (gnus-picons-lookup-user-internal user domains)
380 (gnus-picons-lookup-user-internal "unknown" domains)))
382 (defun gnus-picons-lookup-pairs (domains directories)
383 "Lookup picons for DOMAINS and all its parents in DIRECTORIES.
384 Returns a list of PAIRS whose CAR is the picon filename or NIL if
385 none, and whose CDR is the corresponding element of DOMAINS."
387 (setq directories (if (listp directories)
391 (push (list (gnus-picons-lookup (cons "unknown" domains) directories)
396 (defun gnus-picons-display-picon-or-name (picon name &optional right-p)
397 (cond (picon (gnus-picons-display-glyph picon name right-p))
398 (gnus-picons-display-as-address (list (gnus-picons-make-annotation
399 (vector 'string :data name)
401 nil nil nil right-p)))))
403 (defun gnus-picons-display-pairs (pairs &optional bar-p dot-p right-p)
404 "Display picons in list PAIRS."
405 (let ((domain-p (and gnus-picons-display-as-address dot-p))
407 (when (and bar-p domain-p right-p
408 gnus-picons-display-article-move-p)
409 (setq picons (gnus-picons-display-glyph
410 (let ((gnus-picons-file-suffixes '("xbm")))
411 (gnus-picons-try-face
412 gnus-xmas-glyph-directory "bar."))
414 (while (setq pair (pop pairs))
415 (setq picons (nconc picons
416 (gnus-picons-display-picon-or-name
417 (car pair) (cadr pair) right-p)
418 (if (and domain-p pairs)
419 (list (gnus-picons-make-annotation
420 (vector 'string :data dot-p)
421 nil 'text nil nil nil right-p))))))
424 (defun gnus-picons-try-face (dir &optional filebase)
425 (let* ((dir (file-name-as-directory dir))
426 (filebase (or filebase "face."))
427 (key (concat dir filebase))
428 (glyph (cdr (assoc key gnus-picons-glyph-alist)))
429 (suffixes gnus-picons-file-suffixes)
431 (while (setq suf (pop suffixes))
432 (when (file-exists-p (setq f (expand-file-name
433 (concat filebase suf)
436 glyph (make-glyph f))
437 (if (equal suf "xbm")
438 (set-glyph-face glyph 'gnus-picons-xbm-face)
439 (set-glyph-face glyph 'gnus-picons-face))
440 (push (cons key glyph) gnus-picons-glyph-alist)))
443 (defun gnus-picons-display-glyph (glyph &optional part rightp)
444 (set-glyph-baseline glyph 70)
445 (let ((new (gnus-picons-make-annotation
446 glyph (point) 'text nil nil nil rightp)))
447 (when (and part gnus-picons-display-as-address)
449 new (cons new (make-glyph (vector 'string :data part))))
450 (set-annotation-action new 'gnus-picons-action-toggle))
453 (if (and (eq major-mode 'gnus-article-mode)
454 (not gnus-picons-display-as-address)
456 (list (gnus-picons-make-annotation [string :data " "] (point)
457 'text nil nil nil rightp))))))
459 (defun gnus-picons-action-toggle (data)
462 (let* ((annot (car data))
463 (glyph (annotation-glyph annot)))
464 (set-annotation-glyph annot (cdr data))
465 (set-annotation-data annot (cons annot glyph))))
467 (defun gnus-picons-clear-cache ()
468 "Clear the picons cache."
470 (setq gnus-picons-glyph-alist nil
471 gnus-picons-url-alist nil))
473 (gnus-add-shutdown 'gnus-picons-close 'gnus)
475 (defun gnus-picons-close ()
476 "Shut down the picons."
477 (if gnus-picons-clear-cache-on-shutdown
478 (gnus-picons-clear-cache)))
480 ;;; Query a remote DB. This requires some stuff from w3 !
485 (require 'w3-forms)))
487 (defun gnus-picons-url-retrieve (url fn arg)
488 (let ((old-asynch (default-value 'url-be-asynchronous))
489 (url-working-buffer (generate-new-buffer " *picons*"))
490 (url-package-name "Gnus")
491 (url-package-version gnus-version-number)
493 (setq-default url-be-asynchronous t)
495 (set-buffer url-working-buffer)
496 (setq url-be-asynchronous t
497 url-current-callback-data arg
498 url-current-callback-func fn)
499 (url-retrieve url t))
500 (setq-default url-be-asynchronous old-asynch)))
502 (defun gnus-picons-make-glyph (type)
503 "Make a TYPE glyph using current buffer as data. Handles xbm nicely."
504 (cond ((null type) nil)
505 ((eq type 'xbm) (let ((fname (make-temp-name "/tmp/picon")))
506 (write-region (point-min) (point-max) fname
508 (prog1 (make-glyph (vector 'xbm :file fname))
509 (delete-file fname))))
510 (t (make-glyph (vector type :data (buffer-string))))))
512 ;;; Parsing of piconsearch result page.
515 ;; 1 - each value field has the form: "<strong>key</strong> = <kbd>value</kbd>"
516 ;; 2 - a "<p>" separates the keywords from the results
517 ;; 3 - every results begins by the path within the database at the beginning
518 ;; of the line in raw text.
519 ;; 3b - and the href following it is the preferred image type.
521 ;; if 1 or 2 is not met, it will probably cause an error. The other
522 ;; will go undetected
524 (defun gnus-picons-parse-value (name)
525 (goto-char (point-min))
526 (if (re-search-forward (concat "<strong>"
528 "</strong> *= *<kbd> *\\([^ <][^<]*\\) *</kbd>")
530 (buffer-substring (match-beginning 1) (match-end 1))))
532 (defun gnus-picons-parse-filenames ()
533 ;; returns an alist of ((USER ADDRS DB) . URL)
534 (let ((case-fold-search t)
535 (user (gnus-picons-parse-value "user"))
536 (host (gnus-picons-parse-value "host"))
537 (dbs (message-tokenize-header (gnus-picons-parse-value "db") " "))
538 start-re cur-db cur-host cur-user types res)
539 ;; now point will be somewhere in the header. Find beginning of
541 (when (and user host dbs)
545 "^\\(" (mapconcat 'regexp-quote dbs "\\|") "\\)/"
547 "\\(\\(" (mapconcat 'regexp-quote
548 (message-tokenize-header host ".") "/\\|")
551 "\\(" (regexp-quote user) "\\|unknown\\)/"
553 (re-search-forward "<p>[ \t\n]*")
554 (while (re-search-forward start-re nil t)
555 (setq cur-db (buffer-substring (match-beginning 1) (match-end 1))
556 cur-host (buffer-substring (match-beginning 2) (match-end 2))
557 cur-user (buffer-substring (match-beginning 4) (match-end 4))
558 cur-host (nreverse (message-tokenize-header cur-host "/")))
559 ;; XXX - KLUDGE: there is a blank picon in news/MISC/unknown
560 (unless (and (string-equal cur-db "news")
561 (string-equal cur-user "unknown")
562 (equal cur-host '("MISC")))
563 ;; ok now we have found an entry (USER HOST DB), find the
564 ;; corresponding picon URL
566 ;; restrict region to this entry
567 (narrow-to-region (point) (search-forward "<br>"))
568 (goto-char (point-min))
569 (setq types gnus-picons-file-suffixes)
571 (not (re-search-forward
572 (concat "<a[ \t\n]+href=\"\\([^\"]*\\."
573 (regexp-quote (car types)) "\\)\"")
576 (push (cons (list cur-user cur-host cur-db)
577 (buffer-substring (match-beginning 1) (match-end 1)))
581 ;;; picon network display functions :
583 (defun gnus-picons-network-display-internal (sym-ann glyph part right-p marker)
584 (let ((buf (marker-buffer marker))
585 (pos (marker-position marker)))
590 (gnus-picons-display-picon-or-name glyph part right-p))))
591 (gnus-picons-next-job-internal))
593 (defun gnus-picons-network-display-callback (url part sym-ann right-p marker)
594 (let ((glyph (gnus-picons-make-glyph (cdr (assoc url-current-mime-type
595 w3-image-mappings)))))
596 (kill-buffer (current-buffer))
597 (push (cons url glyph) gnus-picons-glyph-alist)
598 ;; only do the job if it has not been preempted.
599 (if (equal gnus-picons-job-already-running
600 (list sym-ann 'picon url part right-p marker))
601 (gnus-picons-network-display-internal
602 sym-ann glyph part right-p marker)
603 (gnus-picons-next-job-internal))))
605 (defun gnus-picons-network-display (url part sym-ann right-p marker)
606 (let ((cache (assoc url gnus-picons-glyph-alist)))
607 (if (or cache (null url))
608 (gnus-picons-network-display-internal
609 sym-ann (cdr cache) part right-p marker)
610 (gnus-picons-url-retrieve url 'gnus-picons-network-display-callback
611 (list url part sym-ann right-p marker)))))
613 ;;; search job functions
615 (defun gnus-picons-display-bar-p ()
616 (if (eq gnus-picons-display-where 'article)
617 gnus-picons-display-article-move-p
618 gnus-picons-display-as-address))
620 (defun gnus-picons-network-search-internal (user addrs dbs sym-ann right-p
621 marker &optional fnames)
622 (let (curkey dom pfx url dbs-tmp cache new-jobs)
623 ;; First do the domain search
624 (dolist (part (if right-p
627 (setq pfx (nconc (list part) pfx)
628 dom (cond ((and dom right-p) (concat part "." dom))
629 (dom (concat dom "." part))
631 curkey (list "unknown" dom dbs))
632 (when (null (setq cache (assoc curkey gnus-picons-url-alist)))
633 ;; This one is not yet in the cache, create a new entry
634 ;; Search for an entry
637 (while (and dbs-tmp (null url))
638 (setq url (or (cdr (assoc (list "unknown" pfx (car dbs-tmp)) fnames))
640 ;; This is the first component. Try the
641 ;; catch-all MISC component
642 (cdr (assoc (list "unknown"
647 (push (setq cache (cons curkey url)) gnus-picons-url-alist))
648 ;; Put this glyph in the job list
649 (if (and (not (eq dom part)) gnus-picons-display-as-address)
650 (push (list sym-ann "." right-p marker) new-jobs))
651 (push (list sym-ann 'picon (cdr cache) part right-p marker) new-jobs))
652 ;; next, the user search
654 (setq curkey (list user dom gnus-picons-user-directories))
655 (if (null (setq cache (assoc curkey gnus-picons-url-alist)))
656 (let ((users (list user "unknown"))
657 dirs usr domains-tmp dir picon)
658 (while (and users (null picon))
659 (setq dirs gnus-picons-user-directories
661 (while (and dirs (null picon))
662 (setq domains-tmp addrs
664 (while (and domains-tmp
665 (null (setq picon (assoc (list usr domains-tmp dir)
669 (setq picon (assoc (list usr '("MISC") dir) fnames)))))
670 (push (setq cache (cons curkey (cdr picon)))
671 gnus-picons-url-alist)))
672 (if (and gnus-picons-display-as-address new-jobs)
673 (push (list sym-ann "@" right-p marker) new-jobs))
674 (push (list sym-ann 'picon (cdr cache) user right-p marker) new-jobs))
675 (if (and (gnus-picons-display-bar-p) (not right-p))
676 (push (list sym-ann 'bar right-p marker) new-jobs))
677 ;; only put the jobs in the queue if this job has not been preempted.
678 (if (equal gnus-picons-job-already-running
679 (list sym-ann 'search user addrs dbs right-p marker))
680 (setq gnus-picons-jobs-alist
681 (nconc (if (and (gnus-picons-display-bar-p) right-p)
682 (list (list sym-ann 'bar right-p marker)))
684 gnus-picons-jobs-alist)))
685 (gnus-picons-next-job-internal)))
687 (defun gnus-picons-network-search-callback (user addrs dbs sym-ann right-p
689 (gnus-picons-network-search-internal
690 user addrs dbs sym-ann right-p marker
692 (gnus-picons-parse-filenames)
693 (kill-buffer (current-buffer)))))
695 ;; Initiate a query on the picon database
696 (defun gnus-picons-network-search (user addrs dbs sym-ann right-p marker)
697 (let* ((host (mapconcat 'identity addrs "."))
698 (key (list (or user "unknown") host (if user
699 gnus-picons-user-directories
701 (cache (assoc key gnus-picons-url-alist)))
703 (gnus-picons-url-retrieve
704 (concat gnus-picons-piconsearch-url
705 "?user=" (w3-form-encode-xwfu (or user "unknown"))
706 "&host=" (w3-form-encode-xwfu host)
707 "&db=" (mapconcat 'w3-form-encode-xwfu
710 gnus-picons-user-directories)
713 'gnus-picons-network-search-callback
714 (list user addrs dbs sym-ann right-p marker))
715 (gnus-picons-network-search-internal
716 user addrs dbs sym-ann right-p marker))))
718 ;;; Main jobs dispatcher function
720 (defun gnus-picons-next-job-internal ()
721 (when (setq gnus-picons-job-already-running (pop gnus-picons-jobs-alist))
722 (let* ((job gnus-picons-job-already-running)
727 ((stringp tag);; (SYM-ANN "..." RIGHT-P MARKER)
728 (gnus-picons-network-display-internal
729 sym-ann nil tag (pop job) (pop job)))
730 ((eq 'bar tag);; (SYM-ANN 'bar RIGHT-P MARKER)
731 (gnus-picons-network-display-internal
733 (let ((gnus-picons-file-suffixes '("xbm")))
734 (gnus-picons-try-face
735 gnus-xmas-glyph-directory "bar."))
736 nil (pop job) (pop job)))
737 ((eq 'search tag);; (SYM-ANN 'search USER ADDRS DBS RIGHT-P MARKER)
738 (gnus-picons-network-search
739 (pop job) (pop job) (pop job) sym-ann (pop job) (pop job)))
740 ((eq 'picon tag);; (SYM-ANN 'picon URL PART RIGHT-P MARKER)
741 (gnus-picons-network-display
742 (pop job) (pop job) sym-ann (pop job) (pop job)))
744 (setq gnus-picons-job-already-running nil)
745 (error "Unknown picon job tag %s" tag)))))))
747 (defun gnus-picons-next-job ()
748 "Start processing the job queue if it is not in progress."
749 (unless gnus-picons-job-already-running
750 (gnus-picons-next-job-internal)))
752 (provide 'gnus-picon)
754 ;;; gnus-picon.el ends here