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- ;;; rmailkwd.el --- part of the "RMAIL" mail reader for Emacs.
-
- ;; Copyright (C) 1985, 1988, 1994 Free Software Foundation, Inc.
-
- ;; Maintainer: FSF
- ;; Keywords: mail
-
- ;; 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.
-
- ;;; Code:
-
- ;; Global to all RMAIL buffers. It exists primarily for the sake of
- ;; completion. It is better to use strings with the label functions
- ;; and let them worry about making the label.
-
- (defvar rmail-label-obarray (make-vector 47 0))
-
- ;; Named list of symbols representing valid message attributes in RMAIL.
-
- (defconst rmail-attributes
- (cons 'rmail-keywords
- (mapcar (function (lambda (s) (intern s rmail-label-obarray)))
- '("deleted" "answered" "filed" "forwarded" "unseen" "edited"
- "resent"))))
-
- (defconst rmail-deleted-label (intern "deleted" rmail-label-obarray))
-
- ;; Named list of symbols representing valid message keywords in RMAIL.
-
- (defvar rmail-keywords nil)
-
- (defun rmail-add-label (string)
- "Add LABEL to labels associated with current RMAIL message.
- Completion is performed over known labels when reading."
- (interactive (list (rmail-read-label "Add label")))
- (rmail-set-label string t))
-
- (defun rmail-kill-label (string)
- "Remove LABEL from labels associated with current RMAIL message.
- Completion is performed over known labels when reading."
- (interactive (list (rmail-read-label "Remove label")))
- (rmail-set-label string nil))
-
- (defun rmail-read-label (prompt)
- (if (not rmail-keywords) (rmail-parse-file-keywords))
- (let ((result
- (completing-read (concat prompt
- (if rmail-last-label
- (concat " (default "
- (symbol-name rmail-last-label)
- "): ")
- ": "))
- rmail-label-obarray
- nil
- nil)))
- (if (string= result "")
- rmail-last-label
- (setq rmail-last-label (rmail-make-label result t)))))
-
- (defun rmail-set-label (l state &optional n)
- (rmail-maybe-set-message-counters)
- (if (not n) (setq n rmail-current-message))
- (aset rmail-summary-vector (1- n) nil)
- (let* ((attribute (rmail-attribute-p l))
- (keyword (and (not attribute)
- (or (rmail-keyword-p l)
- (rmail-install-keyword l))))
- (label (or attribute keyword)))
- (if label
- (let ((omax (- (buffer-size) (point-max)))
- (omin (- (buffer-size) (point-min)))
- (buffer-read-only nil)
- (case-fold-search t))
- (unwind-protect
- (save-excursion
- (widen)
- (goto-char (rmail-msgbeg n))
- (forward-line 1)
- (if (not (looking-at "[01],"))
- nil
- (let ((start (1+ (point)))
- (bound))
- (narrow-to-region (point) (progn (end-of-line) (point)))
- (setq bound (point-max))
- (search-backward ",," nil t)
- (if attribute
- (setq bound (1+ (point)))
- (setq start (1+ (point))))
- (goto-char start)
- ; (while (re-search-forward "[ \t]*,[ \t]*" nil t)
- ; (replace-match ","))
- ; (goto-char start)
- (if (re-search-forward
- (concat ", " (rmail-quote-label-name label) ",")
- bound
- 'move)
- (if (not state) (replace-match ","))
- (if state (insert " " (symbol-name label) ",")))
- (if (eq label rmail-deleted-label)
- (rmail-set-message-deleted-p n state)))))
- (narrow-to-region (- (buffer-size) omin) (- (buffer-size) omax))
- (if (= n rmail-current-message) (rmail-display-labels)))))))
-
- ;; Commented functions aren't used by RMAIL but might be nice for user
- ;; packages that do stuff with RMAIL. Note that rmail-message-labels-p
- ;; is in rmail.el now.
-
- ;(defun rmail-message-label-p (label &optional n)
- ; "Returns symbol if LABEL (attribute or keyword) on NTH or current message."
- ; (rmail-message-labels-p (or n rmail-current-message) (regexp-quote label)))
-
- ;(defun rmail-parse-message-labels (&optional n)
- ; "Returns labels associated with NTH or current RMAIL message.
- ;The result is a list of two lists of strings. The first is the
- ;message attributes and the second is the message keywords."
- ; (let (atts keys)
- ; (save-restriction
- ; (widen)
- ; (goto-char (rmail-msgbeg (or n rmail-current-message)))
- ; (forward-line 1)
- ; (or (looking-at "[01],") (error "Malformed label line"))
- ; (forward-char 2)
- ; (while (looking-at "[ \t]*\\([^ \t\n,]+\\),")
- ; (setq atts (cons (buffer-substring (match-beginning 1) (match-end 1))
- ; atts))
- ; (goto-char (match-end 0)))
- ; (or (looking-at ",") (error "Malformed label line"))
- ; (forward-char 1)
- ; (while (looking-at "[ \t]*\\([^ \t\n,]+\\),")
- ; (setq keys (cons (buffer-substring (match-beginning 1) (match-end 1))
- ; keys))
- ; (goto-char (match-end 0)))
- ; (or (looking-at "[ \t]*$") (error "Malformed label line"))
- ; (list (nreverse atts) (nreverse keys)))))
-
- (defun rmail-attribute-p (s)
- (let ((symbol (rmail-make-label s)))
- (if (memq symbol (cdr rmail-attributes)) symbol)))
-
- (defun rmail-keyword-p (s)
- (let ((symbol (rmail-make-label s)))
- (if (memq symbol (cdr (rmail-keywords))) symbol)))
-
- (defun rmail-make-label (s &optional forcep)
- (cond ((symbolp s) s)
- (forcep (intern (downcase s) rmail-label-obarray))
- (t (intern-soft (downcase s) rmail-label-obarray))))
-
- (defun rmail-force-make-label (s)
- (intern (downcase s) rmail-label-obarray))
-
- (defun rmail-quote-label-name (label)
- (regexp-quote (symbol-name (rmail-make-label label t))))
-
- ;; Motion on messages with keywords.
-
- (defun rmail-previous-labeled-message (n labels)
- "Show previous message with one of the labels LABELS.
- LABELS should be a comma-separated list of label names.
- If LABELS is empty, the last set of labels specified is used.
- With prefix argument N moves backward N messages with these labels."
- (interactive "p\nsMove to previous msg with labels: ")
- (rmail-next-labeled-message (- n) labels))
-
- (defun rmail-next-labeled-message (n labels)
- "Show next message with one of the labels LABELS.
- LABELS should be a comma-separated list of label names.
- If LABELS is empty, the last set of labels specified is used.
- With prefix argument N moves forward N messages with these labels."
- (interactive "p\nsMove to next msg with labels: ")
- (if (string= labels "")
- (setq labels rmail-last-multi-labels))
- (or labels
- (error "No labels to find have been specified previously"))
- (setq rmail-last-multi-labels labels)
- (rmail-maybe-set-message-counters)
- (let ((lastwin rmail-current-message)
- (current rmail-current-message)
- (regexp (concat ", ?\\("
- (mail-comma-list-regexp labels)
- "\\),")))
- (save-restriction
- (widen)
- (while (and (> n 0) (< current rmail-total-messages))
- (setq current (1+ current))
- (if (rmail-message-labels-p current regexp)
- (setq lastwin current n (1- n))))
- (while (and (< n 0) (> current 1))
- (setq current (1- current))
- (if (rmail-message-labels-p current regexp)
- (setq lastwin current n (1+ n)))))
- (rmail-show-message lastwin)
- (if (< n 0)
- (message "No previous message with labels %s" labels))
- (if (> n 0)
- (message "No following message with labels %s" labels))))
-
- ;;; Manipulate the file's Labels option.
-
- ;; Return a list of symbols for all
- ;; the keywords (labels) recorded in this file's Labels option.
- (defun rmail-keywords ()
- (or rmail-keywords (rmail-parse-file-keywords)))
-
- ;; Set rmail-keywords to a list of symbols for all
- ;; the keywords (labels) recorded in this file's Labels option.
- (defun rmail-parse-file-keywords ()
- (save-restriction
- (save-excursion
- (widen)
- (goto-char 1)
- (setq rmail-keywords
- (if (search-forward "\nLabels:" (rmail-msgbeg 1) t)
- (progn
- (narrow-to-region (point) (progn (end-of-line) (point)))
- (goto-char (point-min))
- (cons 'rmail-keywords
- (mapcar 'rmail-force-make-label
- (mail-parse-comma-list)))))))))
-
- ;; Add WORD to the list in the file's Labels option.
- ;; Any keyword used for the first time needs this done.
- (defun rmail-install-keyword (word)
- (let ((keyword (rmail-make-label word t))
- (keywords (rmail-keywords)))
- (if (not (or (rmail-attribute-p keyword)
- (rmail-keyword-p keyword)))
- (let ((omin (- (buffer-size) (point-min)))
- (omax (- (buffer-size) (point-max))))
- (unwind-protect
- (save-excursion
- (widen)
- (goto-char 1)
- (let ((case-fold-search t)
- (buffer-read-only nil))
- (or (search-forward "\nLabels:" nil t)
- (progn
- (end-of-line)
- (insert "\nLabels:")))
- (delete-region (point) (progn (end-of-line) (point)))
- (setcdr keywords (cons keyword (cdr keywords)))
- (while (setq keywords (cdr keywords))
- (insert (symbol-name (car keywords)) ","))
- (delete-char -1)))
- (narrow-to-region (- (buffer-size) omin)
- (- (buffer-size) omax)))))
- keyword))
-
- ;;; rmailkwd.el ends here
-