;;; Commentary:
+;;; TODO:
+;; See the comment in gnus-picons-remove
+
;;; Code:
(require 'gnus)
(require 'gnus-art)
(require 'gnus-win)
+;;; User variables:
+
(defgroup picons nil
"Show pictures of people, domains, and newsgroups (XEmacs).
For this to work, you must add gnus-group-display-picons to the
:type 'boolean
:group 'picons)
-(defvar gnus-picons-map (make-sparse-keymap "gnus-picons-keys")
- "keymap to hide/show picon glyphs")
+(defcustom gnus-picons-clear-cache-on-shutdown t
+ "*Whether to clear the picons cache when exiting gnus.
+Gnus caches every picons it finds while it is running. This saves
+some time in the search process but eats some memory. If this
+variable is set to nil, Gnus will never clear the cache itself; you
+will have to manually call `gnus-picons-clear-cache' to clear it.
+Otherwise the cache will be cleared every time you exit Gnus."
+ :type 'boolean
+ :group 'picons)
-(define-key gnus-picons-map [(button2)] 'gnus-picons-toggle-extent)
+(defcustom gnus-picons-piconsearch-url nil
+ "*The url to query for picons. Setting this to nil will disable it.
+The only plublicly available address currently known is
+http://www.cs.indiana.edu:800/piconsearch. If you know of any other,
+please tell me so that we can list it."
+ :type '(choice (const :tag "Disable" :value nil)
+ (const :tag "www.cs.indiana.edu"
+ :value "http://www.cs.indiana.edu:800/piconsearch")
+ (string))
+ :group 'picons)
+
+;;; Internal variables:
-;;; Internal variables.
+(defvar gnus-picons-processes-alist nil
+ "Picons processes currently running and their environment.")
+(defvar gnus-picons-glyph-alist nil
+ "Picons glyphs cache.
+List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
+(defvar gnus-picons-url-alist nil
+ "Picons file names cache.
+List of pairs (KEY . NAME) where KEY is (USER HOST DBS) and NAME is an URL.")
(defvar gnus-group-annotations nil
"List of annotations added/removed when selecting/exiting a group")
+(defvar gnus-group-annotations-lock nil)
(defvar gnus-article-annotations nil
"List of annotations added/removed when selecting an article")
+(defvar gnus-article-annotations-lock nil)
(defvar gnus-x-face-annotations nil
- "List of annotations added/removed when selecting an article with an X-Face.")
+ "List of annotations added/removed when selecting an article with an
+X-Face.")
+(defvar gnus-x-face-annotations-lock nil)
+
+(defvar gnus-picons-jobs-alist nil
+ "List of jobs that still need be done.
+This is a list of (SYM-ANN TAG ARGS...) where SYM-ANN three annotations list,
+TAG is one of `picon' or `search' indicating that the job should query a
+picon or do a search for picons file names, and ARGS is some additionnal
+arguments necessary for the job.")
+
+(defvar gnus-picons-job-already-running nil
+ "Lock to ensure only one stream of http requests is running.")
+
+;;; Functions:
+
+(defsubst gnus-picons-lock (symbol)
+ (intern (concat (symbol-name symbol) "-lock")))
(defun gnus-picons-remove (symbol)
- "Remove all annotations/processes in variable named SYMBOL.
+ "Remove all annotations in variable named SYMBOL.
This function is careful to set it to nil before removing anything so that
asynchronous process don't get crazy."
- (let ((listitems (symbol-value symbol)))
- (set symbol nil)
- (while listitems
- (let ((item (pop listitems)))
- (cond ((annotationp item)
- (delete-annotation item))
- ((processp item)
- ;; kill the process, ignore any output.
- (set-process-sentinel item (function (lambda (p e))))
- (delete-process item)))))))
+ ;; clear the lock
+ (set (gnus-picons-lock symbol) nil)
+ ;; clear all annotations
+ (mapc (function (lambda (item)
+ (if (annotationp item)
+ (delete-annotation item))))
+ (prog1 (symbol-value symbol)
+ (set symbol nil)))
+ ;; FIXME: there's a race condition here. If a job is already
+ ;; running, it has already removed itself from this queue... But
+ ;; will still display its picon.
+ ;; TODO: push a request to clear an annotation. Then
+ ;; gnus-picons-next-job will be able to clean up when it gets the
+ ;; hand
+ (setq gnus-picons-jobs-alist (remassq symbol gnus-picons-jobs-alist)))
(defun gnus-picons-remove-all ()
"Removes all picons from the Gnus display(s)."
(defun gnus-get-buffer-name (variable)
"Returns the buffer name associated with the contents of a variable."
- (cond ((symbolp variable)
- (let ((newvar (cdr (assq variable gnus-window-to-buffer))))
- (cond ((symbolp newvar)
- (symbol-value newvar))
- ((stringp newvar) newvar))))
- ((stringp variable)
- variable)))
+ (cond ((symbolp variable) (let ((newvar (cdr (assq variable
+ gnus-window-to-buffer))))
+ (cond ((symbolp newvar)
+ (symbol-value newvar))
+ ((stringp newvar) newvar))))
+ ((stringp variable) variable)))
(defun gnus-picons-prepare-for-annotations (annotations)
"Prepare picons buffer for puting annotations memorized in ANNOTATIONS.
(if (and (eq gnus-picons-display-where 'article)
gnus-picons-display-article-move-p)
(when (search-forward "\n\n" nil t)
- (forward-line -1)))
+ (forward-line -1))
+ (make-local-variable 'inhibit-read-only)
+ (setq buffer-read-only t
+ inhibit-read-only nil))
(gnus-picons-remove annotations))
(defun gnus-picons-article-display-x-face ()
(gnus-article-display-x-face)))
(defun gnus-picons-x-face-sentinel (process event)
- ;; don't call gnus-picons-prepare-for-annotations, it would reset
- ;; gnus-x-face-annotations.
- (set-buffer (get-buffer-create
- (gnus-get-buffer-name gnus-picons-display-where)))
- (gnus-add-current-to-buffer-list)
- (goto-char (point-min))
- (if (and (eq gnus-picons-display-where 'article)
- gnus-picons-display-article-move-p)
- (when (search-forward "\n\n" nil t)
- (forward-line -1)))
- ;; If the process is still in the list, insert this icon
- (let ((myself (member process gnus-x-face-annotations)))
- (when myself
- (setcar myself
- (make-annotation gnus-picons-x-face-file-name nil 'text))
- (delete-file gnus-picons-x-face-file-name))))
+ (let* ((env (assq process gnus-picons-processes-alist))
+ (annot (cdr env)))
+ (setq gnus-picons-processes-alist (remassq process
+ gnus-picons-processes-alist))
+ (when annot
+ (set-annotation-glyph annot
+ (make-glyph gnus-picons-x-face-file-name))
+ (if (memq annot gnus-x-face-annotations)
+ (delete-file gnus-picons-x-face-file-name)))))
(defun gnus-picons-display-x-face (beg end)
"Function to display the x-face header in the picons window.
(save-excursion
(gnus-picons-prepare-for-annotations 'gnus-x-face-annotations)
(setq gnus-x-face-annotations
- (cons (make-annotation (concat "X-Face: "
- (buffer-substring beg end buf))
+ (cons (make-annotation
+ (vector 'xface
+ :data (concat "X-Face: "
+ (buffer-substring beg end buf)))
nil 'text)
gnus-x-face-annotations))))
;; convert the x-face header to a .xbm file
(let* ((process-connection-type nil)
- (process (start-process "gnus-x-face" nil
- shell-file-name shell-command-switch
- gnus-picons-convert-x-face)))
+ (annot (save-excursion
+ (gnus-picons-prepare-for-annotations
+ 'gnus-x-face-annotations)
+ (make-annotation nil nil 'text)))
+ (process (start-process-shell-command "gnus-x-face" nil
+ gnus-picons-convert-x-face)))
+ (push annot gnus-x-face-annotations)
+ (push (cons process annot) gnus-picons-processes-alist)
(process-kill-without-query process)
- (setq gnus-x-face-annotations (list process))
(set-process-sentinel process 'gnus-picons-x-face-sentinel)
(process-send-region process beg end)
(process-send-eof process))))
(when (and (featurep 'xpm)
(or (not (fboundp 'device-type)) (equal (device-type) 'x))
(setq from (mail-fetch-field "from"))
- (setq from (downcase
- (or (cadr (mail-extract-address-components from))
- "")))
+ (setq from (downcase (or (cadr (mail-extract-address-components
+ from))
+ "")))
(or (setq at-idx (string-match "@" from))
(setq at-idx (length from))))
(save-excursion
- (let ((username (substring from 0 at-idx))
+ (let ((username (downcase (substring from 0 at-idx)))
(addrs (if (eq at-idx (length from))
(if gnus-local-domain
- (message-tokenize-header gnus-local-domain ".")
- nil)
+ (message-tokenize-header gnus-local-domain "."))
(message-tokenize-header (substring from (1+ at-idx))
"."))))
(gnus-picons-prepare-for-annotations 'gnus-article-annotations)
- (setq gnus-article-annotations
- (nconc gnus-article-annotations
- ;; look for domain paths.
- (gnus-picons-display-pairs
- (gnus-picons-lookup-pairs addrs
- gnus-picons-domain-directories)
- (not (or gnus-picons-display-as-address
- gnus-article-annotations))
- nil "." t)
- ;; add an '@' if displaying as address
- (if (and gnus-picons-display-as-address addrs)
- (list (make-annotation "@" nil 'text nil nil nil t)))
- ;; then do user directories,
- (gnus-picons-display-picon-or-name
- (gnus-picons-lookup-user (downcase username) addrs)
- username nil t)))
+ (if (null gnus-picons-piconsearch-url)
+ (setq gnus-article-annotations
+ (nconc gnus-article-annotations
+ (gnus-picons-display-pairs
+ (gnus-picons-lookup-pairs
+ addrs gnus-picons-domain-directories)
+ (not (or gnus-picons-display-as-address
+ gnus-article-annotations))
+ "." t)
+ (if (and gnus-picons-display-as-address addrs)
+ (list (make-annotation [string :data "@"] nil
+ 'text nil nil nil t)))
+ (gnus-picons-display-picon-or-name
+ (gnus-picons-lookup-user username addrs)
+ username t)))
+ (push (list 'gnus-article-annotations 'search username addrs
+ gnus-picons-domain-directories t)
+ gnus-picons-jobs-alist)
+ (gnus-picons-next-job))
(add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))))
(or (not (fboundp 'device-type)) (equal (device-type) 'x)))
(save-excursion
(gnus-picons-prepare-for-annotations 'gnus-group-annotations)
- (setq gnus-group-annotations
- (gnus-picons-display-pairs
- (gnus-picons-lookup-pairs (reverse (message-tokenize-header
- gnus-newsgroup-name "."))
- gnus-picons-news-directory)
- t nil "."))
+ (if (null gnus-picons-piconsearch-url)
+ (setq gnus-group-annotations
+ (gnus-picons-display-pairs
+ (gnus-picons-lookup-pairs (reverse (message-tokenize-header
+ gnus-newsgroup-name "."))
+ gnus-picons-news-directory)
+ t "."))
+ (push (list 'gnus-group-annotations 'search nil
+ (message-tokenize-header gnus-newsgroup-name ".")
+ (if (listp gnus-picons-news-directory)
+ gnus-picons-news-directory
+ (list gnus-picons-news-directory))
+ nil)
+ gnus-picons-jobs-alist)
+ (gnus-picons-next-job))
+
(add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))
-(defun gnus-picons-make-path (dir subdirs)
- "Make a directory name from a base DIR and a list of SUBDIRS.
-Returns a directory name build by concatenating DIR and all elements of
-SUBDIRS with \"/\" between elements."
- (while subdirs
- (setq dir (file-name-as-directory (concat dir (pop subdirs)))))
- dir)
-
-(defsubst gnus-picons-try-suffixes (file)
- (let ((suffixes gnus-picons-file-suffixes)
- f)
- (while (and suffixes
- (not (file-exists-p (setq f (concat file (pop suffixes))))))
- (setq f nil))
- f))
+(defsubst gnus-picons-lookup-internal (addrs dir)
+ (setq dir (expand-file-name dir gnus-picons-database))
+ (gnus-picons-try-face (dolist (part (reverse addrs) dir)
+ (setq dir (expand-file-name part dir)))))
(defun gnus-picons-lookup (addrs dirs)
"Lookup the picon for ADDRS in databases DIRS.
Returns the picon filename or NIL if none found."
(let (result)
(while (and dirs (null result))
- (setq result
- (gnus-picons-try-suffixes
- (expand-file-name "face."
- (gnus-picons-make-path
- (file-name-as-directory
- (concat
- (file-name-as-directory gnus-picons-database)
- (pop dirs)))
- (reverse addrs))))))
+ (setq result (gnus-picons-lookup-internal addrs (pop dirs))))
result))
(defun gnus-picons-lookup-user-internal (user domains)
(let ((dirs gnus-picons-user-directories)
- picon)
+ domains-tmp dir picon)
(while (and dirs (null picon))
- (let ((dir (list (pop dirs)))
- (domains domains))
- (while (and domains (null picon))
- (setq picon (gnus-picons-lookup (cons user domains) dir))
- (pop domains))
- ;; Also make a try MISC subdir
- (unless picon
- (setq picon (gnus-picons-lookup (list user "MISC") dir)))))
-
+ (setq domains-tmp domains
+ dir (pop dirs))
+ (while (and domains-tmp
+ (null (setq picon (gnus-picons-lookup-internal
+ (cons user domains-tmp) dir))))
+ (pop domains-tmp))
+ ;; Also make a try in MISC subdir
+ (unless picon
+ (setq picon (gnus-picons-lookup-internal (list user "MISC") dir))))
picon))
(defun gnus-picons-lookup-user (user domains)
Returns a list of PAIRS whose CAR is the picon filename or NIL if
none, and whose CDR is the corresponding element of DOMAINS."
(let (picons)
+ (setq directories (if (listp directories)
+ directories
+ (list directories)))
(while domains
- (push (list (gnus-picons-lookup (cons "unknown" domains)
- (if (listp directories)
- directories
- (list directories)))
+ (push (list (gnus-picons-lookup (cons "unknown" domains) directories)
(pop domains))
picons))
picons))
-(defun gnus-picons-display-picon-or-name (picon name &optional xface-p right-p)
- (if picon
- (gnus-picons-try-to-find-face picon xface-p name right-p)
- (list (make-annotation name nil 'text nil nil nil right-p))))
+(defun gnus-picons-display-picon-or-name (picon name &optional right-p)
+ (cond (picon (gnus-picons-display-glyph picon name right-p))
+ (gnus-picons-display-as-address (list (make-annotation
+ (vector 'string :data name)
+ nil 'text
+ nil nil nil right-p)))))
-(defun gnus-picons-display-pairs (pairs &optional bar-p xface-p dot-p right-p)
+(defun gnus-picons-display-pairs (pairs &optional bar-p dot-p right-p)
"Display picons in list PAIRS."
(let ((bar (and bar-p (or gnus-picons-display-as-address
- (annotations-in-region (point)
- (min (point-max) (1+ (point)))
- (current-buffer)))))
+ (annotations-in-region (point)
+ (min (point-max)
+ (1+ (point)))
+ (current-buffer)))))
(domain-p (and gnus-picons-display-as-address dot-p))
- picons)
+ pair picons)
(while pairs
- (let ((pair (pop pairs)))
- (setq picons (nconc (if (and domain-p picons (not right-p))
- (list (make-annotation
- dot-p nil 'text nil nil nil right-p)))
- (gnus-picons-display-picon-or-name (car pair)
- (cadr pair)
- xface-p
- right-p)
- (if (and domain-p pairs right-p)
- (list (make-annotation
- dot-p nil 'text nil nil nil right-p)))
- (when (and bar domain-p)
- (setq bar nil)
- (gnus-picons-try-to-find-face
- (expand-file-name "bar.xbm"
- gnus-xmas-glyph-directory)
- nil nil t))
- picons))))
+ (setq pair (pop pairs)
+ picons (nconc (if (and domain-p picons (not right-p))
+ (list (make-annotation
+ (vector 'string :data dot-p)
+ nil 'text nil nil nil right-p)))
+ (gnus-picons-display-picon-or-name (car pair)
+ (cadr pair)
+ right-p)
+ (if (and domain-p pairs right-p)
+ (list (make-annotation
+ (vector 'string :data dot-p)
+ nil 'text nil nil nil right-p)))
+ (when (and bar domain-p)
+ (setq bar nil)
+ (gnus-picons-display-glyph
+ (gnus-picons-try-face gnus-xmas-glyph-directory
+ "bar.")
+ nil t))
+ picons)))
picons))
-(defvar gnus-picons-glyph-alist nil)
-
-(defun gnus-picons-try-to-find-face (path &optional xface-p part rightp)
- "If PATH exists, display it as a bitmap. Returns t if succeeded."
- (let ((glyph (and (not xface-p)
- (cdr (assoc path gnus-picons-glyph-alist)))))
- (when (or glyph (file-exists-p path))
- (unless glyph
- (setq glyph (make-glyph path))
- (unless xface-p
- (push (cons path glyph) gnus-picons-glyph-alist))
- (set-glyph-face glyph 'default))
- (let ((new (make-annotation glyph (point) 'text nil nil nil rightp)))
- (nconc
- (list new)
- (when (and (eq major-mode 'gnus-article-mode)
- (not gnus-picons-display-as-address)
- (not part))
- (list (make-annotation " " (point) 'text nil nil nil rightp)))
- (when (and part gnus-picons-display-as-address)
- (let ((txt (make-annotation part (point) 'text nil nil nil rightp)))
- (hide-annotation txt)
- (set-extent-property txt 'its-partner new)
- (set-extent-property txt 'keymap gnus-picons-map)
- (set-extent-property txt 'mouse-face gnus-article-mouse-face)
- (set-extent-property new 'its-partner txt)
- (set-extent-property new 'keymap gnus-picons-map)
- (list txt))))))))
-
-(defun gnus-picons-toggle-extent (event)
- "Toggle picon glyph at given point"
+(defun gnus-picons-try-face (dir &optional filebase)
+ (let* ((dir (file-name-as-directory dir))
+ (filebase (or filebase "face."))
+ (key (concat dir filebase))
+ (glyph (cdr (assoc key gnus-picons-glyph-alist)))
+ (suffixes gnus-picons-file-suffixes)
+ f)
+ (while (and suffixes (null glyph))
+ (when (file-exists-p (setq f (expand-file-name (concat filebase
+ (pop suffixes))
+ dir)))
+ (setq glyph (make-glyph f))
+ (push (cons key glyph) gnus-picons-glyph-alist)))
+ glyph))
+
+(defun gnus-picons-display-glyph (glyph &optional part rightp)
+ (let ((new (make-annotation glyph (point) 'text nil nil nil rightp)))
+ (when (and part gnus-picons-display-as-address)
+ (set-annotation-data new (cons new
+ (make-glyph (vector 'string :data part))))
+ (set-annotation-action new 'gnus-picons-action-toggle))
+ (nconc
+ (list new)
+ (if (and (eq major-mode 'gnus-article-mode)
+ (not gnus-picons-display-as-address)
+ (not part))
+ (list (make-annotation [string :data " "]
+ (point) 'text nil nil nil rightp))))))
+
+(defun gnus-picons-action-toggle (data)
+ "Toggle annotation"
(interactive "e")
- (let* ((ant1 (event-glyph-extent event))
- (ant2 (extent-property ant1 'its-partner)))
- (when (and (annotationp ant1) (annotationp ant2))
- (reveal-annotation ant2)
- (hide-annotation ant1))))
+ (let* ((annot (car data))
+ (glyph (annotation-glyph annot)))
+ (set-annotation-glyph annot (cdr data))
+ (set-annotation-data annot (cons annot glyph))))
+
+(defun gnus-picons-clear-cache ()
+ "Clear the picons cache"
+ (interactive)
+ (setq gnus-picons-glyph-alist nil))
(gnus-add-shutdown 'gnus-picons-close 'gnus)
(defun gnus-picons-close ()
"Shut down the picons."
- (setq gnus-picons-glyph-alist nil))
+ (if gnus-picons-clear-cache-on-shutdown
+ (gnus-picons-clear-cache)))
+
+;;; Query a remote DB. This requires some stuff from w3 !
+
+(require 'url)
+(require 'w3-forms)
+
+(defun gnus-picons-url-retrieve (url fn arg)
+ (let ((old-asynch (default-value 'url-be-asynchronous))
+ (url-working-buffer (generate-new-buffer " *picons*"))
+ (url-request-method nil)
+ (url-package-name "Gnus")
+ (url-package-version gnus-version-number))
+ (setq-default url-be-asynchronous t)
+ (save-excursion
+ (set-buffer url-working-buffer)
+ (setq url-be-asynchronous t
+ url-show-status nil
+ url-current-callback-data arg
+ url-current-callback-func fn)
+ (url-retrieve url t))
+ (setq-default url-be-asynchronous old-asynch)))
+
+(defun gnus-picons-make-glyph (type)
+ "Make a TYPE glyph using current buffer as data. Handles xbm nicely."
+ (cond ((null type) nil)
+ ((eq type 'xbm) (let ((fname (make-temp-name "/tmp/picon")))
+ (write-region (point-min) (point-max) fname
+ nil 'quiet)
+ (prog1 (make-glyph (vector 'xbm :file fname))
+ (delete-file fname))))
+ (t (make-glyph (vector type :data (buffer-string))))))
+
+;;; Parsing of piconsearch result page.
+
+;; Assumes:
+;; 1 - each value field has the form: "<strong>key</strong> = <kbd>value</kbd>"
+;; 2 - a "<p>" separates the keywords from the results
+;; 3 - every results begins by the path within the database at the beginning
+;; of the line in raw text.
+;; 3b - and the href following it is the preferred image type.
+
+;; if 1 or 2 is not met, it will probably cause an error. The other
+;; will go undetected
+
+(defun gnus-picons-parse-value (name)
+ (goto-char (point-min))
+ (re-search-forward (concat "<strong>"
+ (regexp-quote name)
+ "</strong> *= *<kbd> *\\([^ <][^<]*\\) *</kbd>"))
+ (buffer-substring (match-beginning 1) (match-end 1)))
+
+(defun gnus-picons-parse-filenames ()
+ ;; returns an alist of ((USER ADDRS DB) . URL)
+ (let* ((case-fold-search t)
+ (user (gnus-picons-parse-value "user"))
+ (host (gnus-picons-parse-value "host"))
+ (dbs (message-tokenize-header (gnus-picons-parse-value "db") " "))
+ (start-re
+ (concat
+ ;; dbs
+ "^\\(" (mapconcat 'identity dbs "\\|") "\\)/"
+ ;; host
+ "\\(\\(" (replace-in-string host "\\." "/\\|" t) "/\\|MISC/\\)*\\)"
+ ;; user
+ "\\(" (regexp-quote user) "\\|unknown\\)/"
+ "face\\."))
+ cur-db cur-host cur-user types res)
+ ;; now point will be somewhere in the header. Find beginning of
+ ;; entries
+ (re-search-forward "<p>[ \t\n]*")
+ (while (re-search-forward start-re nil t)
+ (setq cur-db (buffer-substring (match-beginning 1) (match-end 1))
+ cur-host (buffer-substring (match-beginning 2) (match-end 2))
+ cur-user (buffer-substring (match-beginning 4) (match-end 4))
+ cur-host (nreverse (message-tokenize-header cur-host "/")))
+ ;; XXX - KLUDGE: there is a blank picon in news/MISC/unknown
+ (unless (and (string-equal cur-db "news")
+ (string-equal cur-user "unknown")
+ (equal cur-host '("MISC")))
+ ;; ok now we have found an entry (USER HOST DB), find the
+ ;; corresponding picon URL
+ (save-restriction
+ ;; restrict region to this entry
+ (narrow-to-region (point) (search-forward "<br>"))
+ (goto-char (point-min))
+ (setq types gnus-picons-file-suffixes)
+ (while (and types
+ (not (re-search-forward
+ (concat "<a[ \t\n]+href=\"\\([^\"]*\\."
+ (regexp-quote (car types)) "\\)\"")
+ nil t)))
+ (pop types))
+ (push (cons (list cur-user cur-host cur-db)
+ (buffer-substring (match-beginning 1) (match-end 1)))
+ res))))
+ (nreverse res)))
+
+;;; picon network display functions :
+
+(defun gnus-picons-network-display-internal (sym-ann glyph part right-p)
+ (set-buffer
+ (get-buffer-create (gnus-get-buffer-name gnus-picons-display-where)))
+ (set sym-ann (nconc (symbol-value sym-ann)
+ (gnus-picons-display-picon-or-name glyph part right-p)))
+ (gnus-picons-next-job-internal))
+
+(defun gnus-picons-network-display-callback (url part sym-ann right-p)
+ (let ((glyph (gnus-picons-make-glyph (cdr (assoc url-current-mime-type
+ w3-image-mappings)))))
+ (kill-buffer (current-buffer))
+ (push (cons url glyph) gnus-picons-glyph-alist)
+ (gnus-picons-network-display-internal sym-ann glyph part right-p)))
+
+(defun gnus-picons-network-display (url part sym-ann right-p)
+ (let ((cache (assoc url gnus-picons-glyph-alist)))
+ (if (or cache (null url))
+ (gnus-picons-network-display-internal sym-ann (cdr cache) part right-p)
+ (gnus-picons-url-retrieve url 'gnus-picons-network-display-callback
+ (list url part sym-ann right-p)))))
+
+;;; search job functions
+
+(defun gnus-picons-network-search-internal (user addrs dbs sym-ann right-p
+ &optional fnames)
+ (let (curkey dom pfx url dbs-tmp cache new-jobs)
+ ;; First do the domain search
+ (dolist (part (if right-p
+ (reverse addrs)
+ addrs))
+ (setq pfx (nconc (list part) pfx)
+ dom (cond ((and dom right-p) (concat part "." dom))
+ (dom (concat dom "." part))
+ (t part))
+ curkey (list "unknown" dom dbs))
+ (when (null (setq cache (assoc curkey gnus-picons-url-alist)))
+ ;; This one is not yet in the cache, create a new entry
+ ;; Search for an entry
+ (setq dbs-tmp dbs
+ url nil)
+ (while (and dbs-tmp (null url))
+ (setq url (or (cdr (assoc (list "unknown" pfx (car dbs-tmp)) fnames))
+ (and (eq dom part)
+ ;; This is the first component. Try the
+ ;; catch-all MISC component
+ (cdr (assoc (list "unknown"
+ '("MISC")
+ (car dbs-tmp))
+ fnames)))))
+ (pop dbs-tmp))
+ (push (setq cache (cons curkey url)) gnus-picons-url-alist))
+ ;; Put this glyph in the job list
+ (if (and (not (eq dom part)) gnus-picons-display-as-address)
+ (push (list sym-ann "." right-p) new-jobs))
+ (push (list sym-ann 'picon (cdr cache) part right-p) new-jobs))
+ ;; next, the user search
+ (when user
+ (setq curkey (list user dom gnus-picons-user-directories))
+ (if (null (setq cache (assoc curkey gnus-picons-url-alist)))
+ (let ((users (list user "unknown"))
+ dirs usr domains-tmp dir picon)
+ (while (and users (null picon))
+ (setq dirs gnus-picons-user-directories
+ usr (pop users))
+ (while (and dirs (null picon))
+ (setq domains-tmp addrs
+ dir (pop dirs))
+ (while (and domains-tmp
+ (null (setq picon (assoc (list usr domains-tmp dir)
+ fnames))))
+ (pop domains-tmp))
+ (unless picon
+ (setq picon (assoc (list usr '("MISC") dir) fnames)))))
+ (push (setq cache (cons curkey (cdr picon)))
+ gnus-picons-url-alist)))
+ (if (and gnus-picons-display-as-address new-jobs)
+ (push (list sym-ann "@" right-p) new-jobs))
+ (push (list sym-ann 'picon (cdr cache) user right-p) new-jobs))
+ (setq gnus-picons-jobs-alist (nconc (nreverse new-jobs)
+ gnus-picons-jobs-alist))
+ (gnus-picons-next-job-internal)))
+
+(defun gnus-picons-network-search-callback (user addrs dbs sym-ann right-p)
+ (gnus-picons-network-search-internal user addrs dbs sym-ann right-p
+ (prog1 (gnus-picons-parse-filenames)
+ (kill-buffer (current-buffer)))))
+
+(defun gnus-picons-network-search (user addrs dbs sym-ann right-p)
+ (let* ((host (mapconcat 'identity addrs "."))
+ (key (list (or user "unknown") host (if user
+ gnus-picons-user-directories
+ dbs)))
+ (cache (assoc key gnus-picons-url-alist)))
+ (if (null cache)
+ (gnus-picons-url-retrieve
+ (concat gnus-picons-piconsearch-url
+ "?user=" (w3-form-encode-xwfu (or user "unknown"))
+ "&host=" (w3-form-encode-xwfu host)
+ "&db=" (mapconcat 'w3-form-encode-xwfu
+ (if user
+ (append dbs
+ gnus-picons-user-directories)
+ dbs)
+ "+"))
+ 'gnus-picons-network-search-callback
+ (list user addrs dbs sym-ann right-p))
+ (gnus-picons-network-search-internal user addrs dbs sym-ann right-p))))
+
+;;; Main jobs dispatcher function
+;; Given that XEmacs is not really multi threaded, this locking should
+;; be sufficient
+
+(defun gnus-picons-next-job-internal ()
+ (if gnus-picons-jobs-alist
+ (let* ((job (pop gnus-picons-jobs-alist))
+ (sym-ann (pop job))
+ (tag (pop job)))
+ (if tag
+ (cond ((stringp tag);; (SYM-ANN "..." RIGHT-P)
+ (gnus-picons-network-display-internal sym-ann nil tag
+ (pop job)))
+ ((eq 'search tag);; (SYM-ANN 'search USER ADDRS DBS RIGHT-P)
+ (gnus-picons-network-search
+ (pop job) (pop job) (pop job) sym-ann (pop job)))
+ ((eq 'picon tag);; (SYM-ANN 'picon URL PART RIGHT-P)
+ (gnus-picons-network-display
+ (pop job) (pop job) sym-ann (pop job)))
+ (t (error "Unknown picon job tag %s" tag)))))
+ (setq gnus-picons-job-already-running nil)))
+
+(defun gnus-picons-next-job ()
+ "Start processing the job queue."
+ (unless gnus-picons-job-already-running
+ (setq gnus-picons-job-already-running t)
+ (gnus-picons-next-job-internal)))
(provide 'gnus-picon)
projects / gnus / commitdiff