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- ;;; gnus-picon.el --- displaying pretty icons in Gnus
- ;; Copyright (C) 1996,97 Free Software Foundation, Inc.
-
- ;; Author: Wes Hardaker <hardaker@ece.ucdavis.edu>
- ;; Keywords: news xpm annotation glyph faces
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;;; Code:
-
- (require 'gnus)
- (require 'xpm)
- (require 'annotations)
- (require 'custom)
- (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
- gnus-summary-display-hook or to the gnus-article-display-hook
- depending on what gnus-picons-display-where is set to. You must
- also add gnus-article-display-picons to gnus-article-display-hook."
- :group 'gnus-visual)
-
- (defcustom gnus-picons-display-where 'picons
- "Where to display the group and article icons.
- Legal values are `article' and `picons'."
- :type '(choice symbol string)
- :group 'picons)
-
- (defcustom gnus-picons-has-modeline-p t
- "Wether the picons window should have a modeline.
- This is only useful if `gnus-picons-display-where' is `picons'."
- :type 'boolean
- :group 'picons)
-
- (defcustom gnus-picons-database "/usr/local/faces"
- "Defines the location of the faces database.
- For information on obtaining this database of pretty pictures, please
- see http://www.cs.indiana.edu/picons/ftp/index.html"
- :type 'directory
- :group 'picons)
-
- (defcustom gnus-picons-news-directories '("news")
- "Sub-directory of the faces database containing the icons for newsgroups."
- :type '(repeat string)
- :group 'picons)
- (define-obsolete-variable-alias 'gnus-picons-news-directory
- 'gnus-picons-news-directories)
-
- (defcustom gnus-picons-user-directories '("local" "users" "usenix" "misc")
- "List of directories to search for user faces."
- :type '(repeat string)
- :group 'picons)
-
- (defcustom gnus-picons-domain-directories '("domains")
- "List of directories to search for domain faces.
- Some people may want to add \"unknown\" to this list."
- :type '(repeat string)
- :group 'picons)
-
- (defcustom gnus-picons-refresh-before-display nil
- "If non-nil, display the article buffer before computing the picons."
- :type 'boolean
- :group 'picons)
-
- (defcustom gnus-picons-x-face-file-name
- (format "/tmp/picon-xface.%s.xbm" (user-login-name))
- "The name of the file in which to store the converted X-face header."
- :type 'string
- :group 'picons)
-
- (defcustom gnus-picons-convert-x-face (format "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm | pbmtoxbm > %s" gnus-picons-x-face-file-name)
- "Command to convert the x-face header into a xbm file."
- :type 'string
- :group 'picons)
-
- (defcustom gnus-picons-display-as-address t
- "*If t display textual email addresses along with pictures."
- :type 'boolean
- :group 'picons)
-
- (defcustom gnus-picons-file-suffixes
- (when (featurep 'x)
- (let ((types (list "xbm")))
- (when (featurep 'gif)
- (push "gif" types))
- (when (featurep 'xpm)
- (push "xpm" types))
- types))
- "List of suffixes on picon file names to try."
- :type '(repeat string)
- :group 'picons)
-
- (defcustom gnus-picons-display-article-move-p t
- "*Whether to move point to first empty line when displaying picons.
- This has only an effect if `gnus-picons-display-where' has value `article'."
- :type 'boolean
- :group 'picons)
-
- (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)
-
- (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:
-
- (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-article-annotations nil
- "List of annotations added/removed when selecting an article")
- (defvar gnus-x-face-annotations nil
- "List of annotations added/removed when selecting an article with an
- X-Face.")
-
- (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:
-
- (defun gnus-picons-remove (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."
- (setq gnus-picons-jobs-alist (remassq symbol gnus-picons-jobs-alist))
- ;; notify running job that it may have been preempted
- (if (eq (car gnus-picons-job-already-running) symbol)
- (setq gnus-picons-job-already-running t))
- ;; clear all annotations
- (mapc (function (lambda (item)
- (if (annotationp item)
- (delete-annotation item))))
- (prog1 (symbol-value symbol)
- (set symbol nil))))
-
- (defun gnus-picons-remove-all ()
- "Removes all picons from the Gnus display(s)."
- (interactive)
- (gnus-picons-remove 'gnus-article-annotations)
- (gnus-picons-remove 'gnus-group-annotations)
- (gnus-picons-remove 'gnus-x-face-annotations))
-
- (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)))
-
- (defun gnus-picons-set-buffer ()
- (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)
- (if (search-forward "\n\n" nil t)
- (forward-line -1)
- (goto-char (point-max)))
- (setq buffer-read-only t)
- (unless gnus-picons-has-modeline-p
- (set-specifier has-modeline-p
- (list (list (current-buffer)
- (cons nil gnus-picons-has-modeline-p)))))))
-
- (defun gnus-picons-prepare-for-annotations (annotations)
- "Prepare picons buffer for puting annotations memorized in ANNOTATIONS.
- ANNOTATIONS should be a symbol naming a variable wich contains a list of
- annotations. Sets buffer to `gnus-picons-display-where'."
- ;; let drawing catch up
- (when gnus-picons-refresh-before-display
- (sit-for 0))
- (gnus-picons-set-buffer)
- (gnus-picons-remove annotations))
-
- (defsubst gnus-picons-make-annotation (&rest args)
- (let ((annot (apply 'make-annotation args)))
- (set-extent-property annot 'duplicable nil)
- annot))
-
- (defun gnus-picons-article-display-x-face ()
- "Display the x-face header bitmap in the 'gnus-picons-display-where buffer."
- ;; delete any old ones.
- ;; This is needed here because gnus-picons-display-x-face will not
- ;; be called if there is no X-Face header
- (gnus-picons-remove 'gnus-x-face-annotations)
- ;; display the new one.
- (let ((gnus-article-x-face-command 'gnus-picons-display-x-face))
- (gnus-article-display-x-face)))
-
- (defun gnus-picons-x-face-sentinel (process event)
- (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.
- To use: (setq gnus-article-x-face-command 'gnus-picons-display-x-face)"
- (interactive)
- (if (featurep 'xface)
- ;; Use builtin support
- (let ((buf (current-buffer)))
- (save-excursion
- (gnus-picons-prepare-for-annotations 'gnus-x-face-annotations)
- (setq gnus-x-face-annotations
- (cons (gnus-picons-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)
- (annot (save-excursion
- (gnus-picons-prepare-for-annotations
- 'gnus-x-face-annotations)
- (gnus-picons-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)
- (set-process-sentinel process 'gnus-picons-x-face-sentinel)
- (process-send-region process beg end)
- (process-send-eof process))))
-
- (defun gnus-article-display-picons ()
- "Display faces for an author and his/her domain in gnus-picons-display-where."
- (interactive)
- (let (from at-idx)
- (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))
- "")))
- (or (setq at-idx (string-match "@" from))
- (setq at-idx (length from))))
- (save-excursion
- (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 "."))
- (message-tokenize-header (substring from (1+ at-idx))
- "."))))
- (gnus-picons-prepare-for-annotations 'gnus-article-annotations)
- ;; if display in article buffer, the group annotations
- ;; wrongly placed. Move them here
- (if (eq gnus-picons-display-where 'article)
- (dolist (ext gnus-group-annotations)
- (set-extent-endpoints ext (point) (point))))
- (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)
- gnus-picons-display-as-address
- "." t)
- (if (and gnus-picons-display-as-address addrs)
- (list (gnus-picons-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))))))
-
- (defun gnus-group-display-picons ()
- "Display icons for the group in the gnus-picons-display-where buffer."
- (interactive)
- (when (and (featurep 'xpm)
- (or (not (fboundp 'device-type)) (equal (device-type) 'x)))
- (save-excursion
- (gnus-picons-prepare-for-annotations 'gnus-group-annotations)
- (if (null gnus-picons-piconsearch-url)
- (setq gnus-group-annotations
- (gnus-picons-display-pairs
- (gnus-picons-lookup-pairs (reverse (message-tokenize-header
- (gnus-group-real-name gnus-newsgroup-name)
- "."))
- gnus-picons-news-directories)
- t "."))
- (push (list 'gnus-group-annotations 'search nil
- (message-tokenize-header
- (gnus-group-real-name gnus-newsgroup-name) ".")
- (if (listp gnus-picons-news-directories)
- gnus-picons-news-directories
- (list gnus-picons-news-directories))
- nil)
- gnus-picons-jobs-alist)
- (gnus-picons-next-job))
-
- (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all))))
-
- (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-lookup-internal addrs (pop dirs))))
- result))
-
- (defun gnus-picons-lookup-user-internal (user domains)
- (let ((dirs gnus-picons-user-directories)
- domains-tmp dir picon)
- (while (and dirs (null picon))
- (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)
- "Lookup the picon for USER at DOMAINS.
- USER is a string containing a name.
- DOMAINS is a list of strings from the fully qualified domain name."
- (or (gnus-picons-lookup-user-internal user domains)
- (gnus-picons-lookup-user-internal "unknown" domains)))
-
- (defun gnus-picons-lookup-pairs (domains directories)
- "Lookup picons for DOMAINS and all its parents in DIRECTORIES.
- 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) directories)
- (pop domains))
- picons))
- picons))
-
- (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 (gnus-picons-make-annotation
- (vector 'string :data name)
- nil 'text
- nil nil nil right-p)))))
-
- (defun gnus-picons-display-pairs (pairs &optional bar-p dot-p right-p)
- "Display picons in list PAIRS."
- (let ((domain-p (and gnus-picons-display-as-address dot-p))
- pair picons)
- (if (and bar-p domain-p right-p)
- (setq picons (gnus-picons-display-glyph
- (gnus-picons-try-face gnus-xmas-glyph-directory
- "bar.")
- nil right-p)))
- (while pairs
- (setq pair (pop pairs)
- picons (nconc picons
- (gnus-picons-display-picon-or-name (car pair)
- (cadr pair)
- right-p)
- (if (and domain-p pairs)
- (list (gnus-picons-make-annotation
- (vector 'string :data dot-p)
- nil 'text nil nil nil right-p))))))
- (if (and bar-p domain-p (not right-p))
- (setq picons (nconc picons
- (gnus-picons-display-glyph
- (gnus-picons-try-face gnus-xmas-glyph-directory
- "bar.")
- nil right-p))))
- picons))
-
- (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 (gnus-picons-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 (gnus-picons-make-annotation [string :data " "] (point)
- 'text nil nil nil rightp))))))
-
- (defun gnus-picons-action-toggle (data)
- "Toggle annotation"
- (interactive "e")
- (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-picons-url-alist nil))
-
- (gnus-add-shutdown 'gnus-picons-close 'gnus)
-
- (defun gnus-picons-close ()
- "Shut down the picons."
- (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-package-name "Gnus")
- (url-package-version gnus-version-number)
- url-request-method)
- (setq-default url-be-asynchronous t)
- (save-excursion
- (set-buffer url-working-buffer)
- (setq url-be-asynchronous t
- 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)
- (gnus-picons-set-buffer)
- (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)
- ;; only do the job if it has not been preempted.
- (if (equal gnus-picons-job-already-running
- (list sym-ann 'picon url part right-p))
- (gnus-picons-network-display-internal sym-ann glyph part right-p)
- (gnus-picons-next-job-internal))))
-
- (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))
- (if (and gnus-picons-display-as-address (not right-p))
- (push (list sym-ann 'bar right-p) new-jobs))
- ;; only put the jobs in the queue if this job has not been preempted.
- (if (equal gnus-picons-job-already-running
- (list sym-ann 'search user addrs dbs right-p))
- (setq gnus-picons-jobs-alist
- (nconc (if (and gnus-picons-display-as-address right-p)
- (list (list sym-ann 'bar right-p)))
- (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
-
- (defun gnus-picons-next-job-internal ()
- (if (setq gnus-picons-job-already-running (pop gnus-picons-jobs-alist))
- (let* ((job gnus-picons-job-already-running)
- (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 'bar tag)
- (gnus-picons-network-display-internal
- sym-ann (gnus-picons-try-face gnus-xmas-glyph-directory
- "bar.")
- nil (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 (setq gnus-picons-job-already-running nil)
- (error "Unknown picon job tag %s" tag)))))))
-
- (defun gnus-picons-next-job ()
- "Start processing the job queue if it is not in progress"
- (unless gnus-picons-job-already-running
- (gnus-picons-next-job-internal)))
-
- (provide 'gnus-picon)
-
- ;;; gnus-picon.el ends here
-