-;;; mailalias.el --- expand mailing address aliases defined in ~/.mailrc.
+;;; mailalias.el --- expand and complete mailing address aliases
-;; Copyright (C) 1985, 1987 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1987, 1995, 1996 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: mail
(require 'sendmail)
+(defvar mail-names t
+ "Alist of local users, aliases and directory entries as available.
+When t this still needs to be initialized.
+This is the basis for `mail-complete'.")
+
+(defvar mail-local-names t
+ "Alist of local users.
+When t this still needs to be initialized.")
+
+(defvar mail-directory-names t
+ "Alist of mail address directory entries.
+When t this still needs to be initialized.")
+
+(defvar mail-address-field-regexp
+ "^\\(Resent-\\)?\\(To\\|From\\|CC\\|BCC\\|Reply-to\\):")
+
+(defvar mail-complete-alist
+ `((,mail-address-field-regexp mail-get-names pattern)
+ ("Newsgroups:" . (if (boundp 'gnus-active-hashtb)
+ gnus-active-hashtb
+ (if (boundp news-group-article-assoc)
+ news-group-article-assoc)))
+ ("Followup-To:" . (mail-sentto-newsgroups))
+ ;;("Distribution:" ???)
+ )
+ "Alist of header field and expression to return alist for completion.
+Expression may reference variable `pattern' which is the string being completed.
+If not on matching header, `mail-complete-function' gets called instead.")
+
+(defvar mail-complete-function 'ispell-complete-word
+ "Function to call when completing outside `mail-complete-alist'-header.")
+
+
+(defvar mail-directory-function nil
+ "Function to get completions from directory service or `nil' for none.
+See `mail-directory-requery'.")
+
+
+;; This is for when the directory is huge, or changes frequently.
+(defvar mail-directory-requery nil
+ "When non-`nil' call `mail-directory-function' for each completion.
+In that case, one argument gets passed to the function, the partial string
+entered so far.")
+
+
+(defvar mail-directory-process nil
+ "Unix command when `mail-directory-function' is `mail-directory-process'.
+This is a list of the form (COMMAND ARG ...), where each of the list elements
+is evaluated. When `mail-directory-requery' is non-`nil', during
+evaluation the variable `pattern' contains the partial input being completed.
+This might look like
+
+ '(remote-shell-program \"HOST\" \"-nl\" \"USER\" \"COMMAND\")
+
+or
+
+ '(remote-shell-program \"HOST\" \"-n\" \"COMMAND '^\" pattern \"'\")")
+
+(defvar mail-directory-stream ()
+ "List of (HOST SERVICE) for stream connection to mail directory.")
+
+(defvar mail-directory-parser nil
+ "How to interpret the output of `mail-directory-function'.
+Three types of values are possible:
+
+ - nil means to gather each line as one name
+ - regexp means first \\(grouping\\) in successive matches is name
+ - function called at beginning of buffer that returns an alist of names")
+
+
;; Called from sendmail-send-it, or similar functions,
;; only if some mail aliases are defined.
(defun expand-mail-aliases (beg end &optional exclude)
(setq end (set-marker (make-marker) end))
(let ((case-fold-search nil))
(while (let ((case-fold-search t))
- (re-search-forward "^\\(Resent-\\)?\\(To\\|From\\|CC\\|BCC\\|Reply-to\\):" end t))
+ (re-search-forward mail-address-field-regexp end t))
(skip-chars-forward " \t")
(let ((beg1 (point))
end1 pos epos seplen
(obuf (current-buffer)))
(unwind-protect
(progn
- (setq buffer (generate-new-buffer "mailrc"))
- (buffer-disable-undo buffer)
+ (setq buffer (generate-new-buffer " mailrc"))
(set-buffer buffer)
(while file
(cond ((get-file-buffer file)
(setq tem (assoc name mail-aliases))
(if tem
(rplacd tem definition)
- (setq mail-aliases (cons (cons name definition) mail-aliases)))))
+ (setq mail-aliases (cons (cons name definition) mail-aliases)
+ mail-names t))))
+
+
+(defun mail-complete (arg)
+ "Perform completion on header field or word preceding point.
+Completable headers are according to `mail-complete-alist'. If none matches
+current header, calls `mail-complete-function' and passes prefix arg if any."
+ (interactive "P")
+ (let ((list mail-complete-alist))
+ (if (and (save-excursion (search-forward
+ (concat "\n" mail-header-separator "\n")
+ nil t))
+ (save-excursion
+ (if (re-search-backward "^[^\t]" nil t)
+ (while list
+ (if (looking-at (car (car list)))
+ (setq arg (cdr (car list))
+ list ())
+ (setq list (cdr list)))))
+ arg))
+ (let* ((end (point))
+ (beg (save-excursion
+ (skip-chars-backward "^ \t<,:")
+ (point)))
+ (pattern (buffer-substring beg end))
+ completion)
+ (setq list (eval arg)
+ completion (try-completion pattern list))
+ (cond ((eq completion t))
+ ((null completion)
+ (message "Can't find completion for \"%s\"" pattern)
+ (ding))
+ ((not (string= pattern completion))
+ (delete-region beg end)
+ (insert completion))
+ (t
+ (message "Making completion list...")
+ (with-output-to-temp-buffer "*Completions*"
+ (display-completion-list
+ (all-completions pattern list)))
+ (message "Making completion list...%s" "done"))))
+ (funcall mail-complete-function arg))))
+
+(defun mail-get-names (pattern)
+ "Fetch local users and global mail adresses for completion.
+Consults `/etc/passwd' and a directory service if one is set up via
+`mail-directory-function'."
+ (if (eq mail-local-names t)
+ (save-excursion
+ (set-buffer (generate-new-buffer " passwd"))
+ (insert-file-contents "/etc/passwd" nil nil nil t)
+ (setq mail-local-names)
+ (while (not (eobp))
+ (setq mail-local-names
+ `((,(buffer-substring (point)
+ (1- (search-forward ":"))))
+ ,@mail-local-names))
+ (beginning-of-line 2))
+ (kill-buffer (current-buffer))))
+ (if (or (eq mail-names t)
+ (eq mail-directory-names t))
+ (let (directory)
+ (and mail-directory-function
+ (eq mail-directory-names t)
+ (setq directory
+ (mail-directory (if mail-directory-requery pattern))))
+ (if (or directory
+ (eq mail-names t))
+ (setq mail-names
+ (sort (append (if (consp mail-aliases) mail-aliases)
+ (if (consp mail-local-names)
+ mail-local-names)
+ directory)
+ (lambda (a b)
+ ;; should cache downcased strings
+ (string< (downcase (car a))
+ (downcase (car b)))))))
+ (or mail-directory-requery
+ (setq mail-directory-names directory))))
+ mail-names)
+
+
+(defun mail-directory (pattern)
+ "Call directory to get names matching PATTERN or all if `nil'.
+Calls `mail-directory-function' and applies `mail-directory-parser' to output."
+ (save-excursion
+ (message "Querying directory...")
+ (set-buffer (generate-new-buffer " *mail-directory*"))
+ (funcall mail-directory-function pattern)
+ (goto-char 1)
+ (let (directory)
+ (if (stringp mail-directory-parser)
+ (while (re-search-forward mail-directory-parser nil t)
+ (setq directory
+ `((,(match-string 1))
+ ,@directory)))
+ (if mail-directory-parser
+ (setq directory (funcall mail-directory-parser))
+ (while (not (eobp))
+ (setq directory
+ `((,(buffer-substring (point)
+ (progn
+ (forward-line)
+ (if (bolp)
+ (1- (point))
+ (point)))))
+ ,@directory)))))
+ (kill-buffer (current-buffer))
+ (message "Querying directory...done")
+ directory)))
+
+
+(defun mail-directory-process (pattern)
+ "Call a Unix process to output names in directory.
+See `mail-directory-process'."
+ (apply 'call-process (eval (car mail-directory-process)) nil t nil
+ (mapcar 'eval (cdr mail-directory-process))))
+
+;; This should handle a dialog. Currently expects port to spit out names.
+(defun mail-directory-stream (pattern)
+ "Open a stream to retrieve names in directory.
+See `mail-directory-stream'."
+ (let (mailalias-done)
+ (set-process-sentinel
+ (apply 'open-network-stream "mailalias" (current-buffer)
+ mail-directory-stream)
+ (lambda (x x)
+ (setq mailalias-done t)))
+ (while (not mailalias-done)
+ (sit-for .1))))
+
+(defun mail-sentto-newsgroups ()
+ "Return all entries from Newsgroups: header as completion alist."
+ (save-excursion
+ (if (mail-position-on-field "newsgroups" t)
+ (let ((point (point))
+ list)
+ (while (< (skip-chars-backward "^:, \t\n") 0)
+ (setq list `((,(buffer-substring (point) point))
+ ,@list))
+ (skip-chars-backward ", \t\n")
+ (setq point (point)))
+ list))))
(provide 'mailalias)
projects / emacs.git / commitdiff