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;;; pmailkwd.el --- part of the "PMAIL" mail reader for Emacs
;; Copyright (C) 1985, 1988, 1994, 2001, 2002, 2003, 2004,
;; 2005, 2006, 2007, 2008, 2009 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 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:
;;; Code:
(require 'pmail)
;; Global to all PMAIL 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 pmail-label-obarray (make-vector 47 0))
(mapc (function (lambda (s) (intern s pmail-label-obarray)))
'("deleted" "answered" "filed" "forwarded" "unseen" "edited"
"resent"))
(defun pmail-make-label (s)
(intern (downcase s) pmail-label-obarray))
;;;###autoload
(defun pmail-add-label (string)
"Add LABEL to labels associated with current PMAIL message.
Performs completion over known labels when reading."
(interactive (list (pmail-read-label "Add label")))
(pmail-set-label string t))
;;;###autoload
(defun pmail-kill-label (string)
"Remove LABEL from labels associated with current PMAIL message.
Performs completion over known labels when reading."
(interactive (list (pmail-read-label "Remove label")))
(pmail-set-label string nil))
;; Last individual label specified to a or k.
(defvar pmail-last-label nil)
;; Last set of values specified to C-M-n, C-M-p, C-M-s or C-M-l.
(defvar pmail-last-multi-labels nil)
;;;###autoload
(defun pmail-read-label (prompt)
(let ((result
(completing-read (concat prompt
(if pmail-last-label
(concat " (default "
(symbol-name pmail-last-label)
"): ")
": "))
pmail-label-obarray
nil
nil)))
(if (string= result "")
pmail-last-label
(setq pmail-last-label (pmail-make-label result)))))
(defun pmail-set-label (label state &optional msg)
"Set LABEL as present or absent according to STATE in message MSG."
(with-current-buffer pmail-buffer
(pmail-maybe-set-message-counters)
(if (not msg) (setq msg pmail-current-message))
;; Force recalculation of summary for this message.
(aset pmail-summary-vector (1- msg) nil)
(let (attr-index)
;; Is this label an attribute?
(dotimes (i (length pmail-attr-array))
(if (string= (cadr (aref pmail-attr-array i)) label)
(setq attr-index i)))
(if attr-index
;; If so, set it as an attribute.
(pmail-set-attribute attr-index state msg)
;; Is this keyword already present in msg's keyword list?
(let* ((header (pmail-get-header pmail-keyword-header msg))
(regexp (concat ", " (regexp-quote (symbol-name label)) ","))
(present (string-match regexp (concat ", " header ","))))
;; If current state is not correct,
(unless (eq present state)
;; either add it or delete it.
(pmail-set-header
pmail-keyword-header msg
(if state
;; Add this keyword at the end.
(if (and header (not (string= header "")))
(concat header ", " (symbol-name label))
(symbol-name label))
;; Delete this keyword.
(let ((before (substring header 0
(max 0 (- (match-beginning 0) 2))))
(after (substring header
(min (length header)
(- (match-end 0) 1)))))
(cond ((string= before "")
after)
((string= after "")
before)
(t (concat before ", " after)))))))))
(if (= msg pmail-current-message)
(pmail-display-labels)))))
;; Motion on messages with keywords.
;;;###autoload
(defun pmail-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: ")
(pmail-next-labeled-message (- n) labels))
(declare-function mail-comma-list-regexp "mail-utils" (labels))
;;;###autoload
(defun pmail-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 pmail-last-multi-labels))
(or labels
(error "No labels to find have been specified previously"))
(set-buffer pmail-buffer)
(setq pmail-last-multi-labels labels)
(pmail-maybe-set-message-counters)
(let ((lastwin pmail-current-message)
(current pmail-current-message)
(regexp (concat ", ?\\("
(mail-comma-list-regexp labels)
"\\),")))
(while (and (> n 0) (< current pmail-total-messages))
(setq current (1+ current))
(if (string-match regexp (pmail-get-labels current))
(setq lastwin current n (1- n))))
(while (and (< n 0) (> current 1))
(setq current (1- current))
(if (string-match regexp (pmail-get-labels current))
(setq lastwin current n (1+ n))))
(if (< n 0)
(error "No previous message with labels %s" labels)
(if (> n 0)
(error "No following message with labels %s" labels)
(pmail-show-message lastwin)))))
(provide 'pmailkwd)
;; Local Variables:
;; change-log-default-name: "ChangeLog.pmail"
;; End:
;; arch-tag: 1149979c-8e47-4333-9629-cf3dc887a6a7
;;; pmailkwd.el ends here
|
