-;;; gnus-picons.el: Icon hacks for displaying pretty icons in Gnus.
-;; Copyright (C) 1996 Wes Hardaker
+;;; gnus-picon.el --- displaying pretty icons in Gnus
+;; Copyright (C) 1996,97,98 Free Software Foundation, Inc.
-;; Author: Wes Hardaker <hardaker@ece.ucdavis.edu>
-;; Keywords: gnus xpm annotation glyph faces
+;; Author: Wes Hardaker <hardaker@ece.ucdavis.edu>
+;; Keywords: news xpm annotation glyph faces
-;;; Commentary:
+;; 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.
-;; Usage:
-;; - You must have XEmacs (19.12 or above I think) to use this.
-;; - Read the variable descriptions below.
-;;
-;; - chose a setup:
-;;
-;; 1) display the icons in its own buffer:
-;;
-;; (add-hook 'gnus-article-display-hook 'gnus-article-display-picons t)
-;; (add-hook 'gnus-summary-display-hook 'gnus-group-display-picons t)
-;; (setq gnus-picons-display-where 'picons)
-;;
-;; Then add the picons buffer to your display configuration:
-;; The picons buffer needs to be at least 48 pixels high,
-;; which for me is 5 lines:
-;;
-;; (gnus-add-configuration
-;; '(article (vertical 1.0
-;; (group 6)
-;; (picons 5)
-;; (summary .25 point)
-;; (article 1.0))))
-;;
-;; (gnus-add-configuration
-;; '(summary (vertical 1.0 (group 6)
-;; (picons 5)
-;; (summary 1.0 point))))
-;;
-;; 2) display the icons in the summary buffer
-;;
-;; (add-hook 'gnus-article-display-hook 'gnus-article-display-picons t)
-;; (add-hook 'gnus-summary-display-hook 'gnus-group-display-picons t)
-;; (setq gnus-picons-display-where 'summary)
-;;
-;; 3) display the icons in the article buffer
-;;
-;; (add-hook 'gnus-article-display-hook 'gnus-article-display-picons t)
-;; (add-hook 'gnus-article-display-hook 'gnus-group-display-picons t)
-;; (setq gnus-picons-display-where 'article)
-;;
-;;
-;; Warnings:
-;; - I'm not even close to being a lisp expert.
-;; - The 't' (append) flag MUST be in the add-hook line
-;;
-;; TODO:
-;; - Remove the TODO section in the headers.
-;;
+;; 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)
-(eval-when-compile (require 'cl))
+(require 'custom)
+(require 'gnus-art)
+(require 'gnus-win)
-(defvar gnus-picons-buffer "*Icon Buffer*"
- "Buffer name to display the icons in if gnus-picons-display-where is 'picons.")
+;;; User variables:
-(defvar gnus-picons-display-where 'picons
- "Where to display the group and article icons.")
+(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)
-(defvar gnus-picons-database "/usr/local/faces"
- "Defines the location of the faces database.
+(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
+ "*Whether 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" )
+see http://www.cs.indiana.edu/picons/ftp/index.html"
+ :type 'directory
+ :group 'picons)
-(defvar gnus-picons-news-directory "news"
- "Sub-directory of the faces database containing the icons for newsgroups."
-)
+(defcustom gnus-picons-news-directories '("news")
+ "*List of directories to search for newsgroups faces."
+ :type '(repeat string)
+ :group 'picons)
+(define-obsolete-variable-alias 'gnus-picons-news-directory
+ 'gnus-picons-news-directories)
-(defvar gnus-picons-user-directories '("local" "users" "usenix" "misc/MISC")
- "List of directories to search for user faces."
-)
+(defcustom gnus-picons-user-directories '("local" "users" "usenix" "misc")
+ "*List of directories to search for user faces."
+ :type '(repeat string)
+ :group 'picons)
-(defvar gnus-picons-domain-directories '("domains")
- "List of directories to search for domain faces.
+(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-group-excluded-groups nil
+ "*If this regexp matches the group name, group picons will be disabled."
+ :type 'regexp
+ :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 publicly 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)
-(defvar gnus-group-annotations nil)
-(defvar gnus-article-annotations nil)
-(defvar gnus-x-face-annotations nil)
+(defface gnus-picons-xbm-face '((t (:foreground "black" :background "white")))
+ "Face to show X face"
+ :group 'picons)
-(defun gnus-picons-remove (plist)
- (let ((listitem (car plist)))
- (while (setq listitem (car plist))
- (if (annotationp listitem)
- (delete-annotation listitem))
- (setq plist (cdr plist))))
-)
+;;; 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-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-all ()
"Removes all picons from the Gnus display(s)."
(interactive)
- (gnus-picons-remove gnus-article-annotations)
- (gnus-picons-remove gnus-group-annotations)
- (setq gnus-article-annotations nil
- gnus-group-annotations nil)
- (if (bufferp gnus-picons-buffer)
- (kill-buffer gnus-picons-buffer))
-)
+ (map-extents (function (lambda (ext unused) (delete-annotation ext) nil))
+ nil nil nil nil nil 'gnus-picon)
+ (setq gnus-picons-jobs-alist '())
+ ;; notify running job that it may have been preempted
+ (if (and (listp gnus-picons-job-already-running)
+ gnus-picons-job-already-running)
+ (setq gnus-picons-job-already-running t)))
(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)))
-
-(defvar 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.")
+ (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 ()
+ "Prepare picons buffer for putting annotations."
+ ;; let drawing catch up
+ (when gnus-picons-refresh-before-display
+ (sit-for 0))
+ (gnus-picons-set-buffer)
+ (gnus-picons-remove-all))
+
+(defun gnus-picons-make-annotation (&rest args)
+ (let ((annot (apply 'make-annotation args)))
+ (set-extent-property annot 'gnus-picon t)
+ (set-extent-property annot 'duplicable t)
+ annot))
-(defvar 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."
-)
-
(defun gnus-picons-article-display-x-face ()
"Display the x-face header bitmap in the 'gnus-picons-display-where buffer."
- ;; delete any old ones.
- (gnus-picons-remove gnus-x-face-annotations)
- (setq gnus-x-face-annotations nil)
- ;; 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)
+ (when (memq process gnus-picons-processes-alist)
+ (setq gnus-picons-processes-alist
+ (delq process gnus-picons-processes-alist))
+ (gnus-picons-set-buffer)
+ (gnus-picons-make-annotation (make-glyph gnus-picons-x-face-file-name)
+ nil 'text)
+ (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)
- ;; convert the x-face header to a .xbm file
- (let ((process-connection-type nil)
- (process nil))
- (process-kill-without-query
- (setq process (start-process
- "gnus-x-face" nil "sh" "-c" gnus-picons-convert-x-face)))
- (process-send-region "gnus-x-face" beg end)
- (process-send-eof "gnus-x-face")
- ;; wait for it.
- (while (not (equal (process-status process) 'exit))
- (sleep-for .1)))
- ;; display it
- (save-excursion
- (set-buffer (gnus-get-buffer-name gnus-picons-display-where))
- (gnus-add-current-to-buffer-list)
- (beginning-of-buffer)
- (let ((iconpoint (point)))
- (if (not (looking-at "^$"))
- (if buffer-read-only
- (progn
- (toggle-read-only)
- (open-line 1)
- (toggle-read-only)
- )
- (open-line 1)))
- (end-of-line)
- ;; append the annotation to gnus-article-annotations for deletion.
- (setq gnus-x-face-annotations
- (append
- (gnus-picons-try-to-find-face
- gnus-picons-x-face-file-name iconpoint)
- gnus-x-face-annotations)))
- ;; delete the tmp file
- (delete-file gnus-picons-x-face-file-name)))
+ (if (featurep 'xface)
+ ;; Use builtin support
+ (save-excursion
+ (gnus-picons-set-buffer)
+ (gnus-picons-make-annotation
+ (vector 'xface
+ :data (concat "X-Face: " (buffer-substring beg end)))
+ nil 'text))
+ ;; convert the x-face header to a .xbm file
+ (let* ((process-connection-type nil)
+ (process (start-process-shell-command "gnus-x-face" nil
+ gnus-picons-convert-x-face)))
+ (push process 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."
+ "Display faces for an author and her domain in gnus-picons-display-where."
(interactive)
- (if (and (featurep 'xpm)
- (or (not (fboundp 'device-type)) (equal (device-type) 'x)))
+ (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* ((iconpoint (point)) (from (mail-fetch-field "from"))
- (username
- (progn
- (string-match "\\([-_a-zA-Z0-9]+\\)@" from)
- (match-string 1 from)))
- (hostpath
- (concat (gnus-picons-reverse-domain-path
- (replace-in-string
- (replace-in-string from ".*@\\([_a-zA-Z0-9-.]+\\).*"
- "\\1")
- "\\." "/")) "/")))
- (switch-to-buffer (gnus-get-buffer-name gnus-picons-display-where))
- (gnus-add-current-to-buffer-list)
- (beginning-of-buffer)
- (setq iconpoint (point))
- (if (not (looking-at "^$"))
- (if buffer-read-only
- (progn
- (toggle-read-only)
- (open-line 1)
- (toggle-read-only)
- )
- (open-line 1)))
-
- (end-of-line)
- (gnus-picons-remove gnus-article-annotations)
- (setq gnus-article-annotations 'nil)
- (if (equal username from)
- (setq username (progn
- (string-match "<\\([_a-zA-Z0-9-.]+\\)>" from)
- (match-string 1 from))))
- (mapcar '(lambda (pathpart)
- (setq gnus-article-annotations
- (append
- (gnus-picons-insert-face-if-exists
- (concat
- (file-name-as-directory
- gnus-picons-database) pathpart)
- (concat hostpath username)
- iconpoint)
- gnus-article-annotations)))
- gnus-picons-user-directories)
- (mapcar '(lambda (pathpart)
- (setq gnus-article-annotations
- (append
- (gnus-picons-insert-face-if-exists
- (concat (file-name-as-directory
- gnus-picons-database) pathpart)
- (concat hostpath "unknown")
- iconpoint)
- gnus-article-annotations)))
- gnus-picons-domain-directories)
- (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all)
- ))))
+ (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-group-display-picons)
+ (if (null gnus-picons-piconsearch-url)
+ (progn
+ (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)
+ (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)))))))
(defun gnus-group-display-picons ()
- "Display icons for the group in the gnus-picons-display-where buffer."
+ "Display icons for the group in the `gnus-picons-display-where' buffer."
(interactive)
- (if (and (featurep 'xpm)
- (or (not (fboundp 'device-type)) (equal (device-type) 'x)))
- (save-excursion
- (let
- ((iconpoint (point)))
- (switch-to-buffer (gnus-get-buffer-name gnus-picons-display-where))
- (gnus-add-current-to-buffer-list)
- (beginning-of-buffer)
- (cond
- ((listp gnus-group-annotations)
- (mapcar 'delete-annotation gnus-group-annotations)
- (setq gnus-group-annotations nil))
- ((annotationp gnus-group-annotations)
- (delete-annotation gnus-group-annotations)
- (setq gnus-group-annotations nil))
- )
- (setq iconpoint (point))
- (if (not (looking-at "^$"))
- (open-line 1))
- (gnus-picons-remove gnus-group-annotations)
- (setq gnus-group-annotations nil)
- (setq gnus-group-annotations
- (gnus-picons-insert-face-if-exists
- (concat (file-name-as-directory gnus-picons-database)
- gnus-picons-news-directory)
- (concat (replace-in-string gnus-newsgroup-name "\\." "/")
- "/unknown")
- iconpoint t))
- (add-hook 'gnus-summary-exit-hook 'gnus-picons-remove-all)))))
-
-
-(defun gnus-picons-insert-face-if-exists (path filename ipoint &optional rev)
- "Inserts a face at point if I can find one"
- (let ((pathfile (concat path "/" filename "/face"))
- (newfilename
- (replace-in-string filename
- "[_a-zA-Z0-9-]+/\\([_A-Za-z0-9-]+\\)$" "\\1"))
- (annotations nil))
- (if (and rev
- (not (equal filename newfilename)))
- (setq annotations (append
- (gnus-picons-insert-face-if-exists path newfilename ipoint rev)
- annotations)))
- (if (eq (length annotations) (length (setq annotations (append
- (gnus-picons-try-to-find-face (concat pathfile ".xpm") ipoint)
- annotations))))
- (setq annotations (append
- (gnus-picons-try-to-find-face
- (concat pathfile ".xbm") ipoint)
- annotations)))
- (if (and (not rev)
- (not (equal filename newfilename)))
- (setq annotations (append
- (gnus-picons-insert-face-if-exists path newfilename ipoint rev)
- annotations)))
- annotations
- )
- )
-
-(defun gnus-picons-try-to-find-face (path ipoint)
- "If PATH exists, display it as a bitmap. Returns t if succedded."
- (when (file-exists-p path)
- (let ((gl (make-glyph path)))
- (set-glyph-face gl 'default)
- (list (make-annotation gl ipoint 'text)))))
-
-(defun gnus-picons-reverse-domain-path (str)
- "a/b/c/d -> d/c/b/a"
- (if (equal (replace-in-string str "^[^/]*$" "") "")
- str
- (concat (replace-in-string str "^.*/\\([_a-zA-Z0-9-]+\\)$" "\\1") "/"
- (gnus-picons-reverse-domain-path
- (replace-in-string str "^\\(.*\\)/[_a-zA-Z0-9-]+$" "\\1")))))
+ (when (and (featurep 'xpm)
+ (or (not (fboundp 'device-type)) (equal (device-type) 'x))
+ (or (null gnus-picons-group-excluded-groups)
+ (not (string-match gnus-picons-group-excluded-groups
+ gnus-newsgroup-name))))
+ (save-excursion
+ (gnus-picons-prepare-for-annotations)
+ (if (null gnus-picons-piconsearch-url)
+ (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))))
+
+(defun 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)
+ (when (and bar-p domain-p right-p)
+ (setq picons (gnus-picons-display-glyph
+ (let ((gnus-picons-file-suffixes '("xbm")))
+ (gnus-picons-try-face
+ gnus-xmas-glyph-directory "bar."))
+ nil right-p)))
+ (while (setq pair (pop pairs))
+ (setq 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))))))
+ 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 suf)
+ (while (setq suf (pop suffixes))
+ (when (file-exists-p (setq f (expand-file-name
+ (concat filebase suf)
+ dir)))
+ (setq suffixes nil
+ glyph (make-glyph f))
+ (when (equal suf "xbm")
+ (set-glyph-face glyph 'gnus-picons-xbm-face))
+ (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)
+ (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)))))
+
+;; Initiate a query on the picon database
+(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
+ (let ((gnus-picons-file-suffixes '("xbm")))
+ (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)
projects / gnus / blobdiff