mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-26 07:33:47 +00:00
324 lines
10 KiB
EmacsLisp
324 lines
10 KiB
EmacsLisp
;;; gnus-picon.el --- displaying pretty icons in Gnus
|
|
|
|
;; Copyright (C) 1996-2012 Free Software Foundation, Inc.
|
|
|
|
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
|
|
;; 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; There are three picon types relevant to Gnus:
|
|
;;
|
|
;; Persons: person@subdomain.dom
|
|
;; users/dom/subdomain/person/face.gif
|
|
;; usenix/dom/subdomain/person/face.gif
|
|
;; misc/MISC/person/face.gif
|
|
;; Domains: subdomain.dom
|
|
;; domain/dom/subdomain/unknown/face.gif
|
|
;; Groups: comp.lang.lisp
|
|
;; news/comp/lang/lisp/unknown/face.gif
|
|
;;
|
|
;; Original implementation by Wes Hardaker <hardaker@ece.ucdavis.edu>.
|
|
;;
|
|
;;; Code:
|
|
|
|
;; For Emacs <22.2 and XEmacs.
|
|
(eval-and-compile
|
|
(unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
|
|
|
|
(eval-when-compile (require 'cl))
|
|
|
|
(require 'gnus)
|
|
(require 'gnus-art)
|
|
|
|
;;; User variables:
|
|
|
|
(defcustom gnus-picon-news-directories '("news")
|
|
"*List of directories to search for newsgroups faces."
|
|
:type '(repeat string)
|
|
:group 'gnus-picon)
|
|
|
|
(defcustom gnus-picon-user-directories '("users" "usenix" "local" "misc")
|
|
"*List of directories to search for user faces."
|
|
:type '(repeat string)
|
|
:group 'gnus-picon)
|
|
|
|
(defcustom gnus-picon-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 'gnus-picon)
|
|
|
|
(defcustom gnus-picon-file-types
|
|
(let ((types (list "xbm")))
|
|
(when (gnus-image-type-available-p 'gif)
|
|
(push "gif" types))
|
|
(when (gnus-image-type-available-p 'xpm)
|
|
(push "xpm" types))
|
|
types)
|
|
"*List of suffixes on picon file names to try."
|
|
:type '(repeat string)
|
|
:group 'gnus-picon)
|
|
|
|
(defcustom gnus-picon-properties '(:color-symbols (("None" . "white")))
|
|
"List of image properties applied to picons."
|
|
:type 'list
|
|
:version "24.3"
|
|
:group 'gnus-picon)
|
|
|
|
(defcustom gnus-picon-style 'inline
|
|
"How should picons be displayed.
|
|
If `inline', the textual representation is replaced. If `right', picons are
|
|
added right to the textual representation."
|
|
;; FIXME: `right' needs improvement for XEmacs.
|
|
:type '(choice (const inline)
|
|
(const right))
|
|
:group 'gnus-picon)
|
|
|
|
(defcustom gnus-picon-inhibit-top-level-domains t
|
|
"If non-nil, don't piconify top-level domains.
|
|
These are often not very interesting."
|
|
:version "24.1"
|
|
:type 'boolean
|
|
:group 'gnus-picon)
|
|
|
|
;;; Internal variables:
|
|
|
|
(defvar gnus-picon-glyph-alist nil
|
|
"Picon glyphs cache.
|
|
List of pairs (KEY . GLYPH) where KEY is either a filename or an URL.")
|
|
(defvar gnus-picon-cache nil)
|
|
|
|
;;; Functions:
|
|
|
|
(defsubst gnus-picon-split-address (address)
|
|
(setq address (split-string address "@"))
|
|
(if (stringp (cadr address))
|
|
(cons (car address) (split-string (cadr address) "\\."))
|
|
(if (stringp (car address))
|
|
(split-string (car address) "\\."))))
|
|
|
|
(defun gnus-picon-find-face (address directories &optional exact)
|
|
(let* ((address (gnus-picon-split-address address))
|
|
(user (pop address))
|
|
(faddress address)
|
|
database directory result instance base)
|
|
(catch 'found
|
|
(dolist (database gnus-picon-databases)
|
|
(dolist (directory directories)
|
|
(setq address faddress
|
|
base (expand-file-name directory database))
|
|
(while address
|
|
(when (setq result (gnus-picon-find-image
|
|
(concat base "/" (mapconcat 'downcase
|
|
(reverse address)
|
|
"/")
|
|
"/" (downcase user) "/")))
|
|
(throw 'found result))
|
|
(if exact
|
|
(setq address nil)
|
|
(pop address)))
|
|
;; Kludge to search MISC as well. But not in "news".
|
|
(unless (string= directory "news")
|
|
(when (setq result (gnus-picon-find-image
|
|
(concat base "/MISC/" user "/")))
|
|
(throw 'found result))))))))
|
|
|
|
(defun gnus-picon-find-image (directory)
|
|
(let ((types gnus-picon-file-types)
|
|
found type file)
|
|
(while (and (not found)
|
|
(setq type (pop types)))
|
|
(setq found (file-exists-p (setq file (concat directory "face." type)))))
|
|
(if found
|
|
file
|
|
nil)))
|
|
|
|
(defun gnus-picon-insert-glyph (glyph category &optional nostring)
|
|
"Insert GLYPH into the buffer.
|
|
GLYPH can be either a glyph or a string. When NOSTRING, no textual
|
|
replacement is added."
|
|
;; Using NOSTRING prevents wrong BBDB entries with `gnus-picon-style' set to
|
|
;; 'right.
|
|
(if (stringp glyph)
|
|
(insert glyph)
|
|
(gnus-add-wash-type category)
|
|
(gnus-add-image category (car glyph))
|
|
(gnus-put-image (car glyph) (unless nostring (cdr glyph)) category)))
|
|
|
|
(defun gnus-picon-create-glyph (file)
|
|
(or (cdr (assoc file gnus-picon-glyph-alist))
|
|
(cdar (push (cons file (apply 'gnus-create-image
|
|
file nil nil
|
|
gnus-picon-properties))
|
|
gnus-picon-glyph-alist))))
|
|
|
|
;;; Functions that does picon transformations:
|
|
|
|
(declare-function image-size "image.c" (spec &optional pixels frame))
|
|
|
|
(defun gnus-picon-transform-address (header category)
|
|
(gnus-with-article-headers
|
|
(let ((addresses
|
|
(mail-header-parse-addresses
|
|
;; mail-header-parse-addresses does not work (reliably) on
|
|
;; decoded headers.
|
|
(or
|
|
(ignore-errors
|
|
(mail-encode-encoded-word-string
|
|
(or (mail-fetch-field header) "")))
|
|
(mail-fetch-field header))))
|
|
spec file point cache len)
|
|
(dolist (address addresses)
|
|
(setq address (car address))
|
|
(when (and (stringp address)
|
|
(setq spec (gnus-picon-split-address address)))
|
|
(if (setq cache (cdr (assoc address gnus-picon-cache)))
|
|
(setq spec cache)
|
|
(when (setq file (or (gnus-picon-find-face
|
|
address gnus-picon-user-directories)
|
|
(gnus-picon-find-face
|
|
(concat "unknown@"
|
|
(mapconcat
|
|
'identity (cdr spec) "."))
|
|
gnus-picon-user-directories)))
|
|
(setcar spec (cons (gnus-picon-create-glyph file)
|
|
(car spec))))
|
|
|
|
(dotimes (i (- (length spec)
|
|
(if gnus-picon-inhibit-top-level-domains
|
|
2 1)))
|
|
(when (setq file (gnus-picon-find-face
|
|
(concat "unknown@"
|
|
(mapconcat
|
|
'identity (nthcdr (1+ i) spec) "."))
|
|
gnus-picon-domain-directories t))
|
|
(setcar (nthcdr (1+ i) spec)
|
|
(cons (gnus-picon-create-glyph file)
|
|
(nth (1+ i) spec)))))
|
|
(setq spec (nreverse spec))
|
|
(push (cons address spec) gnus-picon-cache))
|
|
|
|
(gnus-article-goto-header header)
|
|
(mail-header-narrow-to-field)
|
|
(case gnus-picon-style
|
|
(right
|
|
(when (= (length addresses) 1)
|
|
(setq len (apply '+ (mapcar (lambda (x)
|
|
(condition-case nil
|
|
(car (image-size (car x)))
|
|
(error 0))) spec)))
|
|
(when (> len 0)
|
|
(goto-char (point-at-eol))
|
|
(insert (propertize
|
|
" " 'display
|
|
(cons 'space
|
|
(list :align-to (- (window-width) 1 len))))))
|
|
(goto-char (point-at-eol))
|
|
(setq point (point-at-eol))
|
|
(dolist (image spec)
|
|
(unless (stringp image)
|
|
(goto-char point)
|
|
(gnus-picon-insert-glyph image category 'nostring)))))
|
|
(inline
|
|
(when (search-forward address nil t)
|
|
(delete-region (match-beginning 0) (match-end 0))
|
|
(setq point (point))
|
|
(while spec
|
|
(goto-char point)
|
|
(if (> (length spec) 2)
|
|
(insert ".")
|
|
(if (= (length spec) 2)
|
|
(insert "@")))
|
|
(gnus-picon-insert-glyph (pop spec) category))))))))))
|
|
|
|
(defun gnus-picon-transform-newsgroups (header)
|
|
(interactive)
|
|
(gnus-with-article-headers
|
|
(gnus-article-goto-header header)
|
|
(mail-header-narrow-to-field)
|
|
(let ((groups (message-tokenize-header (mail-fetch-field header)))
|
|
spec file point)
|
|
(dolist (group groups)
|
|
(unless (setq spec (cdr (assoc group gnus-picon-cache)))
|
|
(setq spec (nreverse (split-string group "[.]")))
|
|
(dotimes (i (length spec))
|
|
(when (setq file (gnus-picon-find-face
|
|
(concat "unknown@"
|
|
(mapconcat
|
|
'identity (nthcdr i spec) "."))
|
|
gnus-picon-news-directories t))
|
|
(setcar (nthcdr i spec)
|
|
(cons (gnus-picon-create-glyph file)
|
|
(nth i spec)))))
|
|
(push (cons group spec) gnus-picon-cache))
|
|
(when (search-forward group nil t)
|
|
(delete-region (match-beginning 0) (match-end 0))
|
|
(save-restriction
|
|
(narrow-to-region (point) (point))
|
|
(while spec
|
|
(goto-char (point-min))
|
|
(if (> (length spec) 1)
|
|
(insert "."))
|
|
(gnus-picon-insert-glyph (pop spec) 'newsgroups-picon))
|
|
(goto-char (point-max))))))))
|
|
|
|
;;; Commands:
|
|
|
|
;; #### NOTE: the test for buffer-read-only is the same as in
|
|
;; article-display-[x-]face. See the comment up there.
|
|
|
|
;;;###autoload
|
|
(defun gnus-treat-from-picon ()
|
|
"Display picons in the From header.
|
|
If picons are already displayed, remove them."
|
|
(interactive)
|
|
(let ((wash-picon-p buffer-read-only))
|
|
(gnus-with-article-buffer
|
|
(if (and wash-picon-p (memq 'from-picon gnus-article-wash-types))
|
|
(gnus-delete-images 'from-picon)
|
|
(gnus-picon-transform-address "from" 'from-picon)))))
|
|
|
|
;;;###autoload
|
|
(defun gnus-treat-mail-picon ()
|
|
"Display picons in the Cc and To headers.
|
|
If picons are already displayed, remove them."
|
|
(interactive)
|
|
(let ((wash-picon-p buffer-read-only))
|
|
(gnus-with-article-buffer
|
|
(if (and wash-picon-p (memq 'mail-picon gnus-article-wash-types))
|
|
(gnus-delete-images 'mail-picon)
|
|
(gnus-picon-transform-address "cc" 'mail-picon)
|
|
(gnus-picon-transform-address "to" 'mail-picon)))))
|
|
|
|
;;;###autoload
|
|
(defun gnus-treat-newsgroups-picon ()
|
|
"Display picons in the Newsgroups and Followup-To headers.
|
|
If picons are already displayed, remove them."
|
|
(interactive)
|
|
(let ((wash-picon-p buffer-read-only))
|
|
(gnus-with-article-buffer
|
|
(if (and wash-picon-p (memq 'newsgroups-picon gnus-article-wash-types))
|
|
(gnus-delete-images 'newsgroups-picon)
|
|
(gnus-picon-transform-newsgroups "newsgroups")
|
|
(gnus-picon-transform-newsgroups "followup-to")))))
|
|
|
|
(provide 'gnus-picon)
|
|
|
|
;;; gnus-picon.el ends here
|