1 ;;; gnus-picon.el --- displaying pretty icons in Gnus
2 ;; Copyright (C) 1996,97 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.
27 ;; See the comment in gnus-picons-remove
33 (require 'annotations)
41 "Show pictures of people, domains, and newsgroups (XEmacs).
42 For this to work, you must add gnus-group-display-picons to the
43 gnus-summary-display-hook or to the gnus-article-display-hook
44 depending on what gnus-picons-display-where is set to. You must
45 also add gnus-article-display-picons to gnus-article-display-hook."
48 (defcustom gnus-picons-buffer "*Icon Buffer*"
49 "Buffer name to display the icons in if gnus-picons-display-where is 'picons."
53 (defcustom gnus-picons-display-where 'picons
54 "Where to display the group and article icons.
55 Legal values are `article' and `picons'."
56 :type '(choice symbol string)
59 (defcustom gnus-picons-database "/usr/local/faces"
60 "Defines the location of the faces database.
61 For information on obtaining this database of pretty pictures, please
62 see http://www.cs.indiana.edu/picons/ftp/index.html"
66 (defcustom gnus-picons-news-directory "news"
67 "Sub-directory of the faces database containing the icons for newsgroups."
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-x-face-file-name
88 (format "/tmp/picon-xface.%s.xbm" (user-login-name))
89 "The name of the file in which to store the converted X-face header."
93 (defcustom gnus-picons-convert-x-face (format "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm | pbmtoxbm > %s" gnus-picons-x-face-file-name)
94 "Command to convert the x-face header into a xbm file."
98 (defcustom gnus-picons-display-as-address t
99 "*If t display textual email addresses along with pictures."
103 (defcustom gnus-picons-file-suffixes
105 (let ((types (list "xbm")))
106 (when (featurep 'gif)
108 (when (featurep 'xpm)
111 "List of suffixes on picon file names to try."
112 :type '(repeat string)
115 (defcustom gnus-picons-display-article-move-p t
116 "*Whether to move point to first empty line when displaying picons.
117 This has only an effect if `gnus-picons-display-where' has value `article'."
121 (defcustom gnus-picons-clear-cache-on-shutdown t
122 "*Whether to clear the picons cache when exiting gnus.
123 Gnus caches every picons it finds while it is running. This saves
124 some time in the search process but eats some memory. If this
125 variable is set to nil, Gnus will never clear the cache itself; you
126 will have to manually call `gnus-picons-clear-cache' to clear it.
127 Otherwise the cache will be cleared every time you exit Gnus."
131 (defcustom gnus-picons-piconsearch-url nil
132 "*The url to query for picons. Setting this to nil will disable it.
133 The only plublicly available address currently known is
134 http://www.cs.indiana.edu:800/piconsearch. If you know of any other,
135 please tell me so that we can list it."
136 :type '(choice (const :tag "Disable" :value nil)
137 (const :tag "www.cs.indiana.edu"
138 :value "http://www.cs.indiana.edu:800/piconsearch")
142 ;;; Internal variables:
144 (defvar gnus-picons-processes-alist nil
145 "Picons processes currently running and their environment.")
146 (defvar gnus-picons-glyph-alist nil
147 "Picons glyphs cache.
148 List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
149 (defvar gnus-picons-url-alist nil
150 "Picons file names cache.
151 List of pairs (KEY . NAME) where KEY is (USER HOST DBS) and NAME is an URL.")
153 (defvar gnus-group-annotations nil
154 "List of annotations added/removed when selecting/exiting a group")
155 (defvar gnus-group-annotations-lock nil)
156 (defvar gnus-article-annotations nil
157 "List of annotations added/removed when selecting an article")
158 (defvar gnus-article-annotations-lock nil)
159 (defvar gnus-x-face-annotations nil
160 "List of annotations added/removed when selecting an article with an
162 (defvar gnus-x-face-annotations-lock nil)
164 (defvar gnus-picons-jobs-alist nil
165 "List of jobs that still need be done.
166 This is a list of (SYM-ANN TAG ARGS...) where SYM-ANN three annotations list,
167 TAG is one of `picon' or `search' indicating that the job should query a
168 picon or do a search for picons file names, and ARGS is some additionnal
169 arguments necessary for the job.")
171 (defvar gnus-picons-job-already-running nil
172 "Lock to ensure only one stream of http requests is running.")
176 (defsubst gnus-picons-lock (symbol)
177 (intern (concat (symbol-name symbol) "-lock")))
179 (defun gnus-picons-remove (symbol)
180 "Remove all annotations in variable named SYMBOL.
181 This function is careful to set it to nil before removing anything so that
182 asynchronous process don't get crazy."
184 (set (gnus-picons-lock symbol) nil)
185 ;; clear all annotations
186 (mapc (function (lambda (item)
187 (if (annotationp item)
188 (delete-annotation item))))
189 (prog1 (symbol-value symbol)
191 ;; FIXME: there's a race condition here. If a job is already
192 ;; running, it has already removed itself from this queue... But
193 ;; will still display its picon.
194 ;; TODO: push a request to clear an annotation. Then
195 ;; gnus-picons-next-job will be able to clean up when it gets the
197 (setq gnus-picons-jobs-alist (remassq symbol gnus-picons-jobs-alist)))
199 (defun gnus-picons-remove-all ()
200 "Removes all picons from the Gnus display(s)."
202 (gnus-picons-remove 'gnus-article-annotations)
203 (gnus-picons-remove 'gnus-group-annotations)
204 (gnus-picons-remove 'gnus-x-face-annotations)
205 (when (bufferp gnus-picons-buffer)
206 (kill-buffer gnus-picons-buffer)))
208 (defun gnus-get-buffer-name (variable)
209 "Returns the buffer name associated with the contents of a variable."
210 (cond ((symbolp variable) (let ((newvar (cdr (assq variable
211 gnus-window-to-buffer))))
212 (cond ((symbolp newvar)
213 (symbol-value newvar))
214 ((stringp newvar) newvar))))
215 ((stringp variable) variable)))
217 (defun gnus-picons-prepare-for-annotations (annotations)
218 "Prepare picons buffer for puting annotations memorized in ANNOTATIONS.
219 ANNOTATIONS should be a symbol naming a variable wich contains a list of
220 annotations. Sets buffer to `gnus-picons-display-where'."
221 ;; let drawing catch up
222 (when gnus-picons-refresh-before-display
224 (set-buffer (get-buffer-create
225 (gnus-get-buffer-name gnus-picons-display-where)))
226 (gnus-add-current-to-buffer-list)
227 (goto-char (point-min))
228 (if (and (eq gnus-picons-display-where 'article)
229 gnus-picons-display-article-move-p)
230 (when (search-forward "\n\n" nil t)
232 (make-local-variable 'inhibit-read-only)
233 (setq buffer-read-only t
234 inhibit-read-only nil))
235 (gnus-picons-remove annotations))
237 (defun gnus-picons-article-display-x-face ()
238 "Display the x-face header bitmap in the 'gnus-picons-display-where buffer."
239 ;; delete any old ones.
240 ;; This is needed here because gnus-picons-display-x-face will not
241 ;; be called if there is no X-Face header
242 (gnus-picons-remove 'gnus-x-face-annotations)
243 ;; display the new one.
244 (let ((gnus-article-x-face-command 'gnus-picons-display-x-face))
245 (gnus-article-display-x-face)))
247 (defun gnus-picons-x-face-sentinel (process event)
248 (let* ((env (assq process gnus-picons-processes-alist))
250 (setq gnus-picons-processes-alist (remassq process
251 gnus-picons-processes-alist))
253 (set-annotation-glyph annot
254 (make-glyph gnus-picons-x-face-file-name))
255 (if (memq annot gnus-x-face-annotations)
256 (delete-file gnus-picons-x-face-file-name)))))
258 (defun gnus-picons-display-x-face (beg end)
259 "Function to display the x-face header in the picons window.
260 To use: (setq gnus-article-x-face-command 'gnus-picons-display-x-face)"
262 (if (featurep 'xface)
263 ;; Use builtin support
264 (let ((buf (current-buffer)))
266 (gnus-picons-prepare-for-annotations 'gnus-x-face-annotations)
267 (setq gnus-x-face-annotations
268 (cons (make-annotation
270 :data (concat "X-Face: "
271 (buffer-substring beg end buf)))
273 gnus-x-face-annotations))))
274 ;; convert the x-face header to a .xbm file
275 (let* ((process-connection-type nil)
276 (annot (save-excursion
277 (gnus-picons-prepare-for-annotations
278 'gnus-x-face-annotations)
279 (make-annotation nil nil 'text)))
280 (process (start-process-shell-command "gnus-x-face" nil
281 gnus-picons-convert-x-face)))
282 (push annot gnus-x-face-annotations)
283 (push (cons process annot) gnus-picons-processes-alist)
284 (process-kill-without-query process)
285 (set-process-sentinel process 'gnus-picons-x-face-sentinel)
286 (process-send-region process beg end)
287 (process-send-eof process))))
289 (defun gnus-article-display-picons ()
290 "Display faces for an author and his/her domain in gnus-picons-display-where."
293 (when (and (featurep 'xpm)
294 (or (not (fboundp 'device-type)) (equal (device-type) 'x))
295 (setq from (mail-fetch-field "from"))
296 (setq from (downcase (or (cadr (mail-extract-address-components
299 (or (setq at-idx (string-match "@" from))
300 (setq at-idx (length from))))
302 (let ((username (downcase (substring from 0 at-idx)))
303 (addrs (if (eq at-idx (length from))
304 (if gnus-local-domain
305 (message-tokenize-header gnus-local-domain "."))
306 (message-tokenize-header (substring from (1+ at-idx))
308 (gnus-picons-prepare-for-annotations 'gnus-article-annotations)
309 (if (null gnus-picons-piconsearch-url)
310 (setq gnus-article-annotations
311 (nconc gnus-article-annotations
312 (gnus-picons-display-pairs
313 (gnus-picons-lookup-pairs
314 addrs gnus-picons-domain-directories)
315 (not (or gnus-picons-display-as-address
316 gnus-article-annotations))
318 (if (and gnus-picons-display-as-address addrs)
319 (list (make-annotation [string :data "@"] nil
320 'text nil nil nil t)))
321 (gnus-picons-display-picon-or-name
322 (gnus-picons-lookup-user username addrs)
324 (push (list 'gnus-article-annotations 'search username addrs
325 gnus-picons-domain-directories t)
326 gnus-picons-jobs-alist)
327 (gnus-picons-next-job))
329 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))))
331 (defun gnus-group-display-picons ()
332 "Display icons for the group in the gnus-picons-display-where buffer."
334 (when (and (featurep 'xpm)
335 (or (not (fboundp 'device-type)) (equal (device-type) 'x)))
337 (gnus-picons-prepare-for-annotations 'gnus-group-annotations)
338 (if (null gnus-picons-piconsearch-url)
339 (setq gnus-group-annotations
340 (gnus-picons-display-pairs
341 (gnus-picons-lookup-pairs (reverse (message-tokenize-header
342 gnus-newsgroup-name "."))
343 gnus-picons-news-directory)
345 (push (list 'gnus-group-annotations 'search nil
346 (message-tokenize-header gnus-newsgroup-name ".")
347 (if (listp gnus-picons-news-directory)
348 gnus-picons-news-directory
349 (list gnus-picons-news-directory))
351 gnus-picons-jobs-alist)
352 (gnus-picons-next-job))
354 (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))
356 (defsubst gnus-picons-lookup-internal (addrs dir)
357 (setq dir (expand-file-name dir gnus-picons-database))
358 (gnus-picons-try-face (dolist (part (reverse addrs) dir)
359 (setq dir (expand-file-name part dir)))))
361 (defun gnus-picons-lookup (addrs dirs)
362 "Lookup the picon for ADDRS in databases DIRS.
363 Returns the picon filename or NIL if none found."
365 (while (and dirs (null result))
366 (setq result (gnus-picons-lookup-internal addrs (pop dirs))))
369 (defun gnus-picons-lookup-user-internal (user domains)
370 (let ((dirs gnus-picons-user-directories)
371 domains-tmp dir picon)
372 (while (and dirs (null picon))
373 (setq domains-tmp domains
375 (while (and domains-tmp
376 (null (setq picon (gnus-picons-lookup-internal
377 (cons user domains-tmp) dir))))
379 ;; Also make a try in MISC subdir
381 (setq picon (gnus-picons-lookup-internal (list user "MISC") dir))))
384 (defun gnus-picons-lookup-user (user domains)
385 "Lookup the picon for USER at DOMAINS.
386 USER is a string containing a name.
387 DOMAINS is a list of strings from the fully qualified domain name."
388 (or (gnus-picons-lookup-user-internal user domains)
389 (gnus-picons-lookup-user-internal "unknown" domains)))
391 (defun gnus-picons-lookup-pairs (domains directories)
392 "Lookup picons for DOMAINS and all its parents in DIRECTORIES.
393 Returns a list of PAIRS whose CAR is the picon filename or NIL if
394 none, and whose CDR is the corresponding element of DOMAINS."
396 (setq directories (if (listp directories)
400 (push (list (gnus-picons-lookup (cons "unknown" domains) directories)
405 (defun gnus-picons-display-picon-or-name (picon name &optional right-p)
406 (cond (picon (gnus-picons-display-glyph picon name right-p))
407 (gnus-picons-display-as-address (list (make-annotation
408 (vector 'string :data name)
410 nil nil nil right-p)))))
412 (defun gnus-picons-display-pairs (pairs &optional bar-p dot-p right-p)
413 "Display picons in list PAIRS."
414 (let ((bar (and bar-p (or gnus-picons-display-as-address
415 (annotations-in-region (point)
419 (domain-p (and gnus-picons-display-as-address dot-p))
422 (setq pair (pop pairs)
423 picons (nconc (if (and domain-p picons (not right-p))
424 (list (make-annotation
425 (vector 'string :data dot-p)
426 nil 'text nil nil nil right-p)))
427 (gnus-picons-display-picon-or-name (car pair)
430 (if (and domain-p pairs right-p)
431 (list (make-annotation
432 (vector 'string :data dot-p)
433 nil 'text nil nil nil right-p)))
434 (when (and bar domain-p)
436 (gnus-picons-display-glyph
437 (gnus-picons-try-face gnus-xmas-glyph-directory
443 (defun gnus-picons-try-face (dir &optional filebase)
444 (let* ((dir (file-name-as-directory dir))
445 (filebase (or filebase "face."))
446 (key (concat dir filebase))
447 (glyph (cdr (assoc key gnus-picons-glyph-alist)))
448 (suffixes gnus-picons-file-suffixes)
450 (while (and suffixes (null glyph))
451 (when (file-exists-p (setq f (expand-file-name (concat filebase
454 (setq glyph (make-glyph f))
455 (push (cons key glyph) gnus-picons-glyph-alist)))
458 (defun gnus-picons-display-glyph (glyph &optional part rightp)
459 (let ((new (make-annotation glyph (point) 'text nil nil nil rightp)))
460 (when (and part gnus-picons-display-as-address)
461 (set-annotation-data new (cons new
462 (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 (make-annotation [string :data " "]
470 (point) '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))
485 (gnus-add-shutdown 'gnus-picons-close 'gnus)
487 (defun gnus-picons-close ()
488 "Shut down the picons."
489 (if gnus-picons-clear-cache-on-shutdown
490 (gnus-picons-clear-cache)))
492 ;;; Query a remote DB. This requires some stuff from w3 !
497 (defun gnus-picons-url-retrieve (url fn arg)
498 (let ((old-asynch (default-value 'url-be-asynchronous))
499 (url-working-buffer (generate-new-buffer " *picons*"))
500 (url-request-method nil)
501 (url-package-name "Gnus")
502 (url-package-version gnus-version-number))
503 (setq-default url-be-asynchronous t)
505 (set-buffer url-working-buffer)
506 (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)
592 (get-buffer-create (gnus-get-buffer-name gnus-picons-display-where)))
593 (set sym-ann (nconc (symbol-value sym-ann)
594 (gnus-picons-display-picon-or-name glyph part right-p)))
595 (gnus-picons-next-job-internal))
597 (defun gnus-picons-network-display-callback (url part sym-ann right-p)
598 (let ((glyph (gnus-picons-make-glyph (cdr (assoc url-current-mime-type
599 w3-image-mappings)))))
600 (kill-buffer (current-buffer))
601 (push (cons url glyph) gnus-picons-glyph-alist)
602 (gnus-picons-network-display-internal sym-ann glyph part right-p)))
604 (defun gnus-picons-network-display (url part sym-ann right-p)
605 (let ((cache (assoc url gnus-picons-glyph-alist)))
606 (if (or cache (null url))
607 (gnus-picons-network-display-internal sym-ann (cdr cache) part right-p)
608 (gnus-picons-url-retrieve url 'gnus-picons-network-display-callback
609 (list url part sym-ann right-p)))))
611 ;;; search job functions
613 (defun gnus-picons-network-search-internal (user addrs dbs sym-ann right-p
615 (let (curkey dom pfx url dbs-tmp cache new-jobs)
616 ;; First do the domain search
617 (dolist (part (if right-p
620 (setq pfx (nconc (list part) pfx)
621 dom (cond ((and dom right-p) (concat part "." dom))
622 (dom (concat dom "." part))
624 curkey (list "unknown" dom dbs))
625 (when (null (setq cache (assoc curkey gnus-picons-url-alist)))
626 ;; This one is not yet in the cache, create a new entry
627 ;; Search for an entry
630 (while (and dbs-tmp (null url))
631 (setq url (or (cdr (assoc (list "unknown" pfx (car dbs-tmp)) fnames))
633 ;; This is the first component. Try the
634 ;; catch-all MISC component
635 (cdr (assoc (list "unknown"
640 (push (setq cache (cons curkey url)) gnus-picons-url-alist))
641 ;; Put this glyph in the job list
642 (if (and (not (eq dom part)) gnus-picons-display-as-address)
643 (push (list sym-ann "." right-p) new-jobs))
644 (push (list sym-ann 'picon (cdr cache) part right-p) new-jobs))
645 ;; next, the user search
647 (setq curkey (list user dom gnus-picons-user-directories))
648 (if (null (setq cache (assoc curkey gnus-picons-url-alist)))
649 (let ((users (list user "unknown"))
650 dirs usr domains-tmp dir picon)
651 (while (and users (null picon))
652 (setq dirs gnus-picons-user-directories
654 (while (and dirs (null picon))
655 (setq domains-tmp addrs
657 (while (and domains-tmp
658 (null (setq picon (assoc (list usr domains-tmp dir)
662 (setq picon (assoc (list usr '("MISC") dir) fnames)))))
663 (push (setq cache (cons curkey (cdr picon)))
664 gnus-picons-url-alist)))
665 (if (and gnus-picons-display-as-address new-jobs)
666 (push (list sym-ann "@" right-p) new-jobs))
667 (push (list sym-ann 'picon (cdr cache) user right-p) new-jobs))
668 (setq gnus-picons-jobs-alist (nconc (nreverse new-jobs)
669 gnus-picons-jobs-alist))
670 (gnus-picons-next-job-internal)))
672 (defun gnus-picons-network-search-callback (user addrs dbs sym-ann right-p)
673 (gnus-picons-network-search-internal user addrs dbs sym-ann right-p
674 (prog1 (gnus-picons-parse-filenames)
675 (kill-buffer (current-buffer)))))
677 (defun gnus-picons-network-search (user addrs dbs sym-ann right-p)
678 (let* ((host (mapconcat 'identity addrs "."))
679 (key (list (or user "unknown") host (if user
680 gnus-picons-user-directories
682 (cache (assoc key gnus-picons-url-alist)))
684 (gnus-picons-url-retrieve
685 (concat gnus-picons-piconsearch-url
686 "?user=" (w3-form-encode-xwfu (or user "unknown"))
687 "&host=" (w3-form-encode-xwfu host)
688 "&db=" (mapconcat 'w3-form-encode-xwfu
691 gnus-picons-user-directories)
694 'gnus-picons-network-search-callback
695 (list user addrs dbs sym-ann right-p))
696 (gnus-picons-network-search-internal user addrs dbs sym-ann right-p))))
698 ;;; Main jobs dispatcher function
699 ;; Given that XEmacs is not really multi threaded, this locking should
702 (defun gnus-picons-next-job-internal ()
703 (if gnus-picons-jobs-alist
704 (let* ((job (pop gnus-picons-jobs-alist))
708 (cond ((stringp tag);; (SYM-ANN "..." RIGHT-P)
709 (gnus-picons-network-display-internal sym-ann nil tag
711 ((eq 'search tag);; (SYM-ANN 'search USER ADDRS DBS RIGHT-P)
712 (gnus-picons-network-search
713 (pop job) (pop job) (pop job) sym-ann (pop job)))
714 ((eq 'picon tag);; (SYM-ANN 'picon URL PART RIGHT-P)
715 (gnus-picons-network-display
716 (pop job) (pop job) sym-ann (pop job)))
717 (t (error "Unknown picon job tag %s" tag)))))
718 (setq gnus-picons-job-already-running nil)))
720 (defun gnus-picons-next-job ()
721 "Start processing the job queue."
722 (unless gnus-picons-job-already-running
723 (setq gnus-picons-job-already-running t)
724 (gnus-picons-next-job-internal)))
726 (provide 'gnus-picon)
728 ;;; gnus-picon.el ends here