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199 lines
7.0 KiB
EmacsLisp
199 lines
7.0 KiB
EmacsLisp
;;; rmailkwd.el --- part of the "RMAIL" mail reader for Emacs
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;; Copyright (C) 1985, 1988, 1994, 2001, 2002, 2003, 2004, 2005, 2006,
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;; 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: mail
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;; Package: rmail
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'rmail)
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;; Global to all RMAIL buffers. It exists for the sake of completion.
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;; It is better to use strings with the label functions and let them
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;; worry about making the label.
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(defvar rmail-label-obarray (make-vector 47 0)
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"Obarray of labels used by Rmail.
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`rmail-read-label' uses this to offer completion.")
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;; Initialize with the standard labels.
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(mapc (lambda (s) (intern (cadr s) rmail-label-obarray))
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rmail-attr-array)
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(defun rmail-make-label (s)
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"Intern string S as a downcased symbol in `rmail-label-obarray'."
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(intern (downcase s) rmail-label-obarray))
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;;;###autoload
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(defun rmail-add-label (label)
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"Add LABEL to labels associated with current RMAIL message.
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Completes (see `rmail-read-label') over known labels when reading.
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LABEL may be a symbol or string. Only one label is allowed."
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(interactive (list (rmail-read-label "Add label")))
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(rmail-set-label label t))
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;;;###autoload
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(defun rmail-kill-label (label)
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"Remove LABEL from labels associated with current RMAIL message.
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Completes (see `rmail-read-label') over known labels when reading.
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LABEL may be a symbol or string. Only one label is allowed."
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(interactive (list (rmail-read-label "Remove label")))
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(rmail-set-label label nil))
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;;;###autoload
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(defun rmail-read-label (prompt)
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"Read a label with completion, prompting with PROMPT.
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Completions are chosen from `rmail-label-obarray'. The default
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is `rmail-last-label', if that is non-nil. Updates `rmail-last-label'
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according to the choice made, and returns a symbol."
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(let* ((old nil)
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(result
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(progn
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;; If the summary exists, we've already read all the
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;; existing labels. If not, read the ones in this message.
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(or (eq major-mode 'rmail-summary-mode)
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(rmail-summary-exists)
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(and (setq old (rmail-get-keywords))
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(mapc 'rmail-make-label (split-string old ", "))))
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(completing-read (concat prompt
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(if rmail-last-label
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(concat " (default "
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(symbol-name rmail-last-label)
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"): ")
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": "))
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rmail-label-obarray
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nil
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nil))))
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(if (string= result "")
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rmail-last-label
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(setq rmail-last-label (rmail-make-label result)))))
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(declare-function rmail-summary-update-line "rmailsum" (n))
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(defun rmail-set-label (label state &optional msg)
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"Set LABEL as present or absent according to STATE in message MSG.
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LABEL may be a symbol or string."
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(or (stringp label) (setq label (symbol-name label)))
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(if (string-match "," label)
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(error "More than one label specified"))
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(with-current-buffer rmail-buffer
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(rmail-maybe-set-message-counters)
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(or msg (setq msg rmail-current-message))
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;; Force recalculation of summary for this message.
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(aset rmail-summary-vector (1- msg) nil)
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(let (attr-index)
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;; Is this label an attribute?
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(dotimes (i (length rmail-attr-array))
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(if (string= (cadr (aref rmail-attr-array i)) label)
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(setq attr-index i)))
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(if attr-index
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;; If so, set it as an attribute.
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(rmail-set-attribute attr-index state msg)
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;; Is this keyword already present in msg's keyword list?
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(let* ((header (rmail-get-keywords msg))
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(regexp (concat ", " (regexp-quote label) ","))
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(present (not (null
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(string-match regexp (concat ", " header ","))))))
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;; If current state is not correct,
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(unless (eq present state)
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;; either add it or delete it.
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(rmail-set-header
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rmail-keyword-header msg
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(if state
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;; Add this keyword at the end.
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(if (and header (not (string= header "")))
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(concat header ", " label)
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label)
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;; Delete this keyword.
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(let ((before (substring header 0
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(max 0 (- (match-beginning 0) 2))))
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(after (substring header
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(min (length header)
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(- (match-end 0) 1)))))
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(cond ((string= before "")
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;; If before and after both empty, delete the header.
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(unless (string= after "")
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after))
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((string= after "")
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before)
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(t (concat before ", " after))))))))))
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(if (rmail-summary-exists)
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(rmail-select-summary (rmail-summary-update-line msg)))
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(if (= msg rmail-current-message)
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(rmail-display-labels))))
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;; Motion on messages with keywords.
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;;;###autoload
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(defun rmail-previous-labeled-message (n labels)
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"Show previous message with one of the labels LABELS.
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LABELS should be a comma-separated list of label names.
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If LABELS is empty, the last set of labels specified is used.
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With prefix argument N moves backward N messages with these labels."
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(interactive "p\nsMove to previous msg with labels: ")
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(rmail-next-labeled-message (- n) labels))
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(declare-function mail-comma-list-regexp "mail-utils" (labels))
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;;;###autoload
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(defun rmail-next-labeled-message (n labels)
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"Show next message with one of the labels LABELS.
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LABELS should be a comma-separated list of label names.
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If LABELS is empty, the last set of labels specified is used.
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With prefix argument N moves forward N messages with these labels."
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;; FIXME show the default in the prompt.
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(interactive "p\nsMove to next msg with labels: ")
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(if (string= labels "")
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(setq labels rmail-last-multi-labels))
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(or labels
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(error "No labels to find have been specified previously"))
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(set-buffer rmail-buffer)
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(setq rmail-last-multi-labels labels)
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(rmail-maybe-set-message-counters)
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(let ((lastwin rmail-current-message)
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(current rmail-current-message)
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(regexp (concat " \\("
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(mail-comma-list-regexp labels)
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"\\)\\(,\\|\\'\\)")))
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(while (and (> n 0) (< current rmail-total-messages))
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(setq current (1+ current))
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(if (string-match regexp (rmail-get-labels current))
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(setq lastwin current n (1- n))))
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(while (and (< n 0) (> current 1))
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(setq current (1- current))
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(if (string-match regexp (rmail-get-labels current))
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(setq lastwin current n (1+ n))))
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(if (< n 0)
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(error "No previous message with labels %s" labels)
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(if (> n 0)
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(error "No following message with labels %s" labels)
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(rmail-show-message-1 lastwin)))))
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(provide 'rmailkwd)
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;; Local Variables:
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;; generated-autoload-file: "rmail.el"
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;; End:
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;; arch-tag: 1149979c-8e47-4333-9629-cf3dc887a6a7
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;;; rmailkwd.el ends here
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