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 "*Wether 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 '((t (:foreground "black" :background "white")))
148 "Face to show X face"
151 ;;; Internal variables:
153 (defvar gnus-picons-processes-alist nil
154 "Picons processes currently running and their environment.")
155 (defvar gnus-picons-glyph-alist nil
156 "Picons glyphs cache.
157 List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
158 (defvar gnus-picons-url-alist nil
159 "Picons file names cache.
160 List of pairs (KEY . NAME) where KEY is (USER HOST DBS) and NAME is an URL.")
162 (defvar gnus-group-annotations nil
163 "List of annotations added/removed when selecting/exiting a group")
164 (defvar gnus-article-annotations nil
165 "List of annotations added/removed when selecting an article")
166 (defvar gnus-x-face-annotations nil
167 "List of annotations added/removed when selecting an article with an X-Face.")
169 (defvar gnus-picons-jobs-alist nil
170 "List of jobs that still need be done.
171 This is a list of (SYM-ANN TAG ARGS...) where SYM-ANN three annotations list,
172 TAG is one of `picon' or `search' indicating that the job should query a
173 picon or do a search for picons file names, and ARGS is some additionnal
174 arguments necessary for the job.")
176 (defvar gnus-picons-job-already-running nil
177 "Lock to ensure only one stream of http requests is running.")
181 (defun gnus-picons-remove (symbol)
182 "Remove all annotations in variable named SYMBOL.
183 This function is careful to set it to nil before removing anything so that
184 asynchronous process don't get crazy."
185 (setq gnus-picons-jobs-alist (remassq symbol gnus-picons-jobs-alist))
186 ;; notify running job that it may have been preempted
187 (if (and (listp gnus-picons-job-already-running)
188 (eq (car gnus-picons-job-already-running) symbol))
189 (setq gnus-picons-job-already-running t))
190 ;; clear all annotations
191 (mapc (function (lambda (item)
192 (if (annotationp item)
193 (delete-annotation item))))
194 (prog1 (symbol-value symbol)
197 (defun gnus-picons-remove-all ()
198 "Removes all picons from the Gnus display(s)."
200 (gnus-picons-remove 'gnus-article-annotations)
201 (gnus-picons-remove 'gnus-group-annotations)
202 (gnus-picons-remove 'gnus-x-face-annotations))
204 (defun gnus-get-buffer-name (variable)
205 "Returns the buffer name associated with the contents of a variable."
206 (cond ((symbolp variable) (let ((newvar (cdr (assq variable
207 gnus-window-to-buffer))))
208 (cond ((symbolp newvar)
209 (symbol-value newvar))
210 ((stringp newvar) newvar))))
211 ((stringp variable) variable)))
213 (defun gnus-picons-set-buffer ()
215 (get-buffer-create (gnus-get-buffer-name gnus-picons-display-where)))
216 (gnus-add-current-to-buffer-list)
217 (goto-char (point-min))
218 (if (and (eq gnus-picons-display-where 'article)
219 gnus-picons-display-article-move-p)
220 (if (search-forward "\n\n" nil t)
222 (goto-char (point-max)))
223 (setq buffer-read-only t)
224 (unless gnus-picons-has-modeline-p
225 (set-specifier has-modeline-p
226 (list (list (current-buffer)
227 (cons nil gnus-picons-has-modeline-p)))))))
229 (defun gnus-picons-prepare-for-annotations (annotations)
230 "Prepare picons buffer for puting annotations memorized in ANNOTATIONS.
231 ANNOTATIONS should be a symbol naming a variable wich contains a list of
232 annotations. Sets buffer to `gnus-picons-display-where'."
233 ;; let drawing catch up
234 (when gnus-picons-refresh-before-display
236 (gnus-picons-set-buffer)
237 (gnus-picons-remove annotations))
239 (defsubst gnus-picons-make-annotation (&rest args)
240 (let ((annot (apply 'make-annotation args)))
241 (set-extent-property annot 'duplicable nil)
244 (defun gnus-picons-article-display-x-face ()
245 "Display the x-face header bitmap in the 'gnus-picons-display-where buffer."
246 ;; delete any old ones.
247 ;; This is needed here because gnus-picons-display-x-face will not
248 ;; be called if there is no X-Face header
249 (gnus-picons-remove 'gnus-x-face-annotations)
250 ;; display the new one.
251 (let ((gnus-article-x-face-command 'gnus-picons-display-x-face))
252 (gnus-article-display-x-face)))
254 (defun gnus-picons-x-face-sentinel (process event)
255 (let* ((env (assq process gnus-picons-processes-alist))
257 (setq gnus-picons-processes-alist
258 (remassq process gnus-picons-processes-alist))
259 (when (annotationp annot)
260 (set-annotation-glyph annot
261 (make-glyph gnus-picons-x-face-file-name))
262 (if (memq annot gnus-x-face-annotations)
263 (delete-file gnus-picons-x-face-file-name)))))
265 (defun gnus-picons-display-x-face (beg end)
266 "Function to display the x-face header in the picons window.
267 To use: (setq gnus-article-x-face-command 'gnus-picons-display-x-face)"
269 (if (featurep 'xface)
270 ;; Use builtin support
271 (let ((buf (current-buffer)))
273 (gnus-picons-prepare-for-annotations 'gnus-x-face-annotations)
274 (setq gnus-x-face-annotations
275 (cons (gnus-picons-make-annotation
277 :data (concat "X-Face: "
278 (buffer-substring beg end buf)))
280 gnus-x-face-annotations))))
281 ;; convert the x-face header to a .xbm file
282 (let* ((process-connection-type nil)
283 (annot (save-excursion
284 (gnus-picons-prepare-for-annotations
285 'gnus-x-face-annotations)
286 (gnus-picons-make-annotation nil nil 'text)))
287 (process (start-process-shell-command "gnus-x-face" nil
288 gnus-picons-convert-x-face)))
289 (push annot gnus-x-face-annotations)
290 (push (cons process annot) gnus-picons-processes-alist)
291 (process-kill-without-query process)
292 (set-process-sentinel process 'gnus-picons-x-face-sentinel)
293 (process-send-region process beg end)
294 (process-send-eof process))))
296 (defun gnus-article-display-picons ()
297 "Display faces for an author and her domain in gnus-picons-display-where."
300 (when (and (featurep 'xpm)
301 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
302 (setq from (mail-fetch-field "from"))
303 (setq from (downcase (or (cadr (mail-extract-address-components
306 (or (setq at-idx (string-match "@" from))
307 (setq at-idx (length from))))
309 (let ((username (downcase (substring from 0 at-idx)))
310 (addrs (if (eq at-idx (length from))
311 (if gnus-local-domain
312 (message-tokenize-header gnus-local-domain "."))
313 (message-tokenize-header (substring from (1+ at-idx))
315 (gnus-picons-prepare-for-annotations 'gnus-article-annotations)
316 ;; if display in article buffer, the group annotations
317 ;; wrongly placed. Move them here
318 (if (eq gnus-picons-display-where 'article)
319 (dolist (ext gnus-group-annotations)
320 (set-extent-endpoints ext (point) (point))))
321 (if (null gnus-picons-piconsearch-url)
322 (setq gnus-article-annotations
323 (nconc gnus-article-annotations
324 (gnus-picons-display-pairs
325 (gnus-picons-lookup-pairs
326 addrs gnus-picons-domain-directories)
327 gnus-picons-display-as-address
329 (if (and gnus-picons-display-as-address addrs)
330 (list (gnus-picons-make-annotation
331 [string :data "@"] nil
332 'text nil nil nil t)))
333 (gnus-picons-display-picon-or-name
334 (gnus-picons-lookup-user username addrs)
336 (push (list 'gnus-article-annotations 'search username addrs
337 gnus-picons-domain-directories t)
338 gnus-picons-jobs-alist)
339 (gnus-picons-next-job))
341 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))))
343 (defun gnus-group-display-picons ()
344 "Display icons for the group in the gnus-picons-display-where buffer."
346 (when (and (featurep 'xpm)
347 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
348 (or (null gnus-picons-group-excluded-groups)
349 (not (string-match gnus-picons-group-excluded-groups
350 gnus-newsgroup-name))))
352 (gnus-picons-prepare-for-annotations 'gnus-group-annotations)
353 (if (null gnus-picons-piconsearch-url)
354 (setq gnus-group-annotations
355 (gnus-picons-display-pairs
356 (gnus-picons-lookup-pairs
357 (reverse (message-tokenize-header
358 (gnus-group-real-name gnus-newsgroup-name)
360 gnus-picons-news-directories)
362 (push (list 'gnus-group-annotations 'search nil
363 (message-tokenize-header
364 (gnus-group-real-name gnus-newsgroup-name) ".")
365 (if (listp gnus-picons-news-directories)
366 gnus-picons-news-directories
367 (list gnus-picons-news-directories))
369 gnus-picons-jobs-alist)
370 (gnus-picons-next-job))
372 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))
374 (defsubst gnus-picons-lookup-internal (addrs dir)
375 (setq dir (expand-file-name dir gnus-picons-database))
376 (gnus-picons-try-face (dolist (part (reverse addrs) dir)
377 (setq dir (expand-file-name part dir)))))
379 (defun gnus-picons-lookup (addrs dirs)
380 "Lookup the picon for ADDRS in databases DIRS.
381 Returns the picon filename or NIL if none found."
383 (while (and dirs (null result))
384 (setq result (gnus-picons-lookup-internal addrs (pop dirs))))
387 (defun gnus-picons-lookup-user-internal (user domains)
388 (let ((dirs gnus-picons-user-directories)
389 domains-tmp dir picon)
390 (while (and dirs (null picon))
391 (setq domains-tmp domains
393 (while (and domains-tmp
394 (null (setq picon (gnus-picons-lookup-internal
395 (cons user domains-tmp) dir))))
397 ;; Also make a try in MISC subdir
399 (setq picon (gnus-picons-lookup-internal (list user "MISC") dir))))
402 (defun gnus-picons-lookup-user (user domains)
403 "Lookup the picon for USER at DOMAINS.
404 USER is a string containing a name.
405 DOMAINS is a list of strings from the fully qualified domain name."
406 (or (gnus-picons-lookup-user-internal user domains)
407 (gnus-picons-lookup-user-internal "unknown" domains)))
409 (defun gnus-picons-lookup-pairs (domains directories)
410 "Lookup picons for DOMAINS and all its parents in DIRECTORIES.
411 Returns a list of PAIRS whose CAR is the picon filename or NIL if
412 none, and whose CDR is the corresponding element of DOMAINS."
414 (setq directories (if (listp directories)
418 (push (list (gnus-picons-lookup (cons "unknown" domains) directories)
423 (defun gnus-picons-display-picon-or-name (picon name &optional right-p)
424 (cond (picon (gnus-picons-display-glyph picon name right-p))
425 (gnus-picons-display-as-address (list (gnus-picons-make-annotation
426 (vector 'string :data name)
428 nil nil nil right-p)))))
430 (defun gnus-picons-display-pairs (pairs &optional bar-p dot-p right-p)
431 "Display picons in list PAIRS."
432 (let ((domain-p (and gnus-picons-display-as-address dot-p))
434 (when (and bar-p domain-p right-p)
435 (setq picons (gnus-picons-display-glyph
436 (let ((gnus-picons-file-suffixes '("xbm")))
437 (gnus-picons-try-face
438 gnus-xmas-glyph-directory "bar."))
440 (while (setq pair (pop pairs))
441 (setq picons (nconc picons
442 (gnus-picons-display-picon-or-name
443 (car pair) (cadr pair) right-p)
444 (if (and domain-p pairs)
445 (list (gnus-picons-make-annotation
446 (vector 'string :data dot-p)
447 nil 'text nil nil nil right-p))))))
450 (defun gnus-picons-try-face (dir &optional filebase)
451 (let* ((dir (file-name-as-directory dir))
452 (filebase (or filebase "face."))
453 (key (concat dir filebase))
454 (glyph (cdr (assoc key gnus-picons-glyph-alist)))
455 (suffixes gnus-picons-file-suffixes)
457 (while (setq suf (pop suffixes))
458 (when (file-exists-p (setq f (expand-file-name
459 (concat filebase suf)
462 glyph (make-glyph f))
463 (when (equal suf "xbm")
464 (set-glyph-face glyph 'gnus-picons-xbm-face))
465 (push (cons key glyph) gnus-picons-glyph-alist)))
468 (defun gnus-picons-display-glyph (glyph &optional part rightp)
469 (let ((new (gnus-picons-make-annotation
470 glyph (point) 'text nil nil nil rightp)))
471 (when (and part gnus-picons-display-as-address)
473 new (cons new (make-glyph (vector 'string :data part))))
474 (set-annotation-action new 'gnus-picons-action-toggle))
477 (if (and (eq major-mode 'gnus-article-mode)
478 (not gnus-picons-display-as-address)
480 (list (gnus-picons-make-annotation [string :data " "] (point)
481 'text nil nil nil rightp))))))
483 (defun gnus-picons-action-toggle (data)
486 (let* ((annot (car data))
487 (glyph (annotation-glyph annot)))
488 (set-annotation-glyph annot (cdr data))
489 (set-annotation-data annot (cons annot glyph))))
491 (defun gnus-picons-clear-cache ()
492 "Clear the picons cache"
494 (setq gnus-picons-glyph-alist nil
495 gnus-picons-url-alist nil))
497 (gnus-add-shutdown 'gnus-picons-close 'gnus)
499 (defun gnus-picons-close ()
500 "Shut down the picons."
501 (if gnus-picons-clear-cache-on-shutdown
502 (gnus-picons-clear-cache)))
504 ;;; Query a remote DB. This requires some stuff from w3 !
509 (defun gnus-picons-url-retrieve (url fn arg)
510 (let ((old-asynch (default-value 'url-be-asynchronous))
511 (url-working-buffer (generate-new-buffer " *picons*"))
512 (url-package-name "Gnus")
513 (url-package-version gnus-version-number)
515 (setq-default url-be-asynchronous t)
517 (set-buffer url-working-buffer)
518 (setq url-be-asynchronous t
519 url-current-callback-data arg
520 url-current-callback-func fn)
521 (url-retrieve url t))
522 (setq-default url-be-asynchronous old-asynch)))
524 (defun gnus-picons-make-glyph (type)
525 "Make a TYPE glyph using current buffer as data. Handles xbm nicely."
526 (cond ((null type) nil)
527 ((eq type 'xbm) (let ((fname (make-temp-name "/tmp/picon")))
528 (write-region (point-min) (point-max) fname
530 (prog1 (make-glyph (vector 'xbm :file fname))
531 (delete-file fname))))
532 (t (make-glyph (vector type :data (buffer-string))))))
534 ;;; Parsing of piconsearch result page.
537 ;; 1 - each value field has the form: "<strong>key</strong> = <kbd>value</kbd>"
538 ;; 2 - a "<p>" separates the keywords from the results
539 ;; 3 - every results begins by the path within the database at the beginning
540 ;; of the line in raw text.
541 ;; 3b - and the href following it is the preferred image type.
543 ;; if 1 or 2 is not met, it will probably cause an error. The other
544 ;; will go undetected
546 (defun gnus-picons-parse-value (name)
547 (goto-char (point-min))
548 (re-search-forward (concat "<strong>"
550 "</strong> *= *<kbd> *\\([^ <][^<]*\\) *</kbd>"))
551 (buffer-substring (match-beginning 1) (match-end 1)))
553 (defun gnus-picons-parse-filenames ()
554 ;; returns an alist of ((USER ADDRS DB) . URL)
555 (let* ((case-fold-search t)
556 (user (gnus-picons-parse-value "user"))
557 (host (gnus-picons-parse-value "host"))
558 (dbs (message-tokenize-header (gnus-picons-parse-value "db") " "))
562 "^\\(" (mapconcat 'identity dbs "\\|") "\\)/"
564 "\\(\\(" (replace-in-string host "\\." "/\\|" t) "/\\|MISC/\\)*\\)"
566 "\\(" (regexp-quote user) "\\|unknown\\)/"
568 cur-db cur-host cur-user types res)
569 ;; now point will be somewhere in the header. Find beginning of
571 (re-search-forward "<p>[ \t\n]*")
572 (while (re-search-forward start-re nil t)
573 (setq cur-db (buffer-substring (match-beginning 1) (match-end 1))
574 cur-host (buffer-substring (match-beginning 2) (match-end 2))
575 cur-user (buffer-substring (match-beginning 4) (match-end 4))
576 cur-host (nreverse (message-tokenize-header cur-host "/")))
577 ;; XXX - KLUDGE: there is a blank picon in news/MISC/unknown
578 (unless (and (string-equal cur-db "news")
579 (string-equal cur-user "unknown")
580 (equal cur-host '("MISC")))
581 ;; ok now we have found an entry (USER HOST DB), find the
582 ;; corresponding picon URL
584 ;; restrict region to this entry
585 (narrow-to-region (point) (search-forward "<br>"))
586 (goto-char (point-min))
587 (setq types gnus-picons-file-suffixes)
589 (not (re-search-forward
590 (concat "<a[ \t\n]+href=\"\\([^\"]*\\."
591 (regexp-quote (car types)) "\\)\"")
594 (push (cons (list cur-user cur-host cur-db)
595 (buffer-substring (match-beginning 1) (match-end 1)))
599 ;;; picon network display functions :
601 (defun gnus-picons-network-display-internal (sym-ann glyph part right-p)
602 (gnus-picons-set-buffer)
603 (set sym-ann (nconc (symbol-value sym-ann)
604 (gnus-picons-display-picon-or-name glyph part right-p)))
605 (gnus-picons-next-job-internal))
607 (defun gnus-picons-network-display-callback (url part sym-ann right-p)
608 (let ((glyph (gnus-picons-make-glyph (cdr (assoc url-current-mime-type
609 w3-image-mappings)))))
610 (kill-buffer (current-buffer))
611 (push (cons url glyph) gnus-picons-glyph-alist)
612 ;; only do the job if it has not been preempted.
613 (if (equal gnus-picons-job-already-running
614 (list sym-ann 'picon url part right-p))
615 (gnus-picons-network-display-internal sym-ann glyph part right-p)
616 (gnus-picons-next-job-internal))))
618 (defun gnus-picons-network-display (url part sym-ann right-p)
619 (let ((cache (assoc url gnus-picons-glyph-alist)))
620 (if (or cache (null url))
621 (gnus-picons-network-display-internal sym-ann (cdr cache) part right-p)
622 (gnus-picons-url-retrieve url 'gnus-picons-network-display-callback
623 (list url part sym-ann right-p)))))
625 ;;; search job functions
627 (defun gnus-picons-network-search-internal (user addrs dbs sym-ann right-p
629 (let (curkey dom pfx url dbs-tmp cache new-jobs)
630 ;; First do the domain search
631 (dolist (part (if right-p
634 (setq pfx (nconc (list part) pfx)
635 dom (cond ((and dom right-p) (concat part "." dom))
636 (dom (concat dom "." part))
638 curkey (list "unknown" dom dbs))
639 (when (null (setq cache (assoc curkey gnus-picons-url-alist)))
640 ;; This one is not yet in the cache, create a new entry
641 ;; Search for an entry
644 (while (and dbs-tmp (null url))
645 (setq url (or (cdr (assoc (list "unknown" pfx (car dbs-tmp)) fnames))
647 ;; This is the first component. Try the
648 ;; catch-all MISC component
649 (cdr (assoc (list "unknown"
654 (push (setq cache (cons curkey url)) gnus-picons-url-alist))
655 ;; Put this glyph in the job list
656 (if (and (not (eq dom part)) gnus-picons-display-as-address)
657 (push (list sym-ann "." right-p) new-jobs))
658 (push (list sym-ann 'picon (cdr cache) part right-p) new-jobs))
659 ;; next, the user search
661 (setq curkey (list user dom gnus-picons-user-directories))
662 (if (null (setq cache (assoc curkey gnus-picons-url-alist)))
663 (let ((users (list user "unknown"))
664 dirs usr domains-tmp dir picon)
665 (while (and users (null picon))
666 (setq dirs gnus-picons-user-directories
668 (while (and dirs (null picon))
669 (setq domains-tmp addrs
671 (while (and domains-tmp
672 (null (setq picon (assoc (list usr domains-tmp dir)
676 (setq picon (assoc (list usr '("MISC") dir) fnames)))))
677 (push (setq cache (cons curkey (cdr picon)))
678 gnus-picons-url-alist)))
679 (if (and gnus-picons-display-as-address new-jobs)
680 (push (list sym-ann "@" right-p) new-jobs))
681 (push (list sym-ann 'picon (cdr cache) user right-p) new-jobs))
682 (if (and gnus-picons-display-as-address (not right-p))
683 (push (list sym-ann 'bar right-p) new-jobs))
684 ;; only put the jobs in the queue if this job has not been preempted.
685 (if (equal gnus-picons-job-already-running
686 (list sym-ann 'search user addrs dbs right-p))
687 (setq gnus-picons-jobs-alist
688 (nconc (if (and gnus-picons-display-as-address right-p)
689 (list (list sym-ann 'bar right-p)))
691 gnus-picons-jobs-alist)))
692 (gnus-picons-next-job-internal)))
694 (defun gnus-picons-network-search-callback (user addrs dbs sym-ann right-p)
695 (gnus-picons-network-search-internal user addrs dbs sym-ann right-p
696 (prog1 (gnus-picons-parse-filenames)
697 (kill-buffer (current-buffer)))))
699 (defun gnus-picons-network-search (user addrs dbs sym-ann right-p)
700 (let* ((host (mapconcat 'identity addrs "."))
701 (key (list (or user "unknown") host (if user
702 gnus-picons-user-directories
704 (cache (assoc key gnus-picons-url-alist)))
706 (gnus-picons-url-retrieve
707 (concat gnus-picons-piconsearch-url
708 "?user=" (w3-form-encode-xwfu (or user "unknown"))
709 "&host=" (w3-form-encode-xwfu host)
710 "&db=" (mapconcat 'w3-form-encode-xwfu
713 gnus-picons-user-directories)
716 'gnus-picons-network-search-callback
717 (list user addrs dbs sym-ann right-p))
718 (gnus-picons-network-search-internal user addrs dbs sym-ann right-p))))
720 ;;; Main jobs dispatcher function
722 (defun gnus-picons-next-job-internal ()
723 (if (setq gnus-picons-job-already-running (pop gnus-picons-jobs-alist))
724 (let* ((job gnus-picons-job-already-running)
728 (cond ((stringp tag);; (SYM-ANN "..." RIGHT-P)
729 (gnus-picons-network-display-internal sym-ann nil tag
732 (gnus-picons-network-display-internal
734 (let ((gnus-picons-file-suffixes '("xbm")))
735 (gnus-picons-try-face
736 gnus-xmas-glyph-directory "bar."))
738 ((eq 'search tag);; (SYM-ANN 'search USER ADDRS DBS RIGHT-P)
739 (gnus-picons-network-search
740 (pop job) (pop job) (pop job) sym-ann (pop job)))
741 ((eq 'picon tag);; (SYM-ANN 'picon URL PART RIGHT-P)
742 (gnus-picons-network-display
743 (pop job) (pop job) sym-ann (pop job)))
744 (t (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