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- ;;; mh-seq --- mh-e sequences support
- ;; Time-stamp: <95/08/19 16:45:15 gildea>
-
- ;; Copyright (C) 1993, 1995 Free Software Foundation, Inc.
-
- ;; This file is part of mh-e, 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.
-
- ;;; Commentary:
-
- ;; Internal support for mh-e package.
-
- ;;; Change Log:
-
- ;; $Id: mh-seq.el,v 1.6 1996/01/29 23:16:57 kwzh Exp $
-
- ;;; Code:
-
- (provide 'mh-seq)
- (require 'mh-e)
-
- ;;; Internal variables:
-
- (defvar mh-last-seq-used nil) ;Name of seq to which a msg was last added.
-
- (defvar mh-non-seq-mode-line-annotation nil) ;Saved value of mh-mode-line-annotation when narrowed to a seq.
-
-
- (defun mh-delete-seq (sequence)
- "Delete the SEQUENCE."
- (interactive (list (mh-read-seq-default "Delete" t)))
- (mh-map-to-seq-msgs 'mh-notate-if-in-one-seq sequence ? (1+ mh-cmd-note)
- sequence)
- (mh-undefine-sequence sequence '("all"))
- (mh-delete-seq-locally sequence))
-
-
- (defun mh-list-sequences (folder)
- "List the sequences defined in FOLDER."
- (interactive (list (mh-prompt-for-folder "List sequences in"
- mh-current-folder t)))
- (let ((temp-buffer mh-temp-buffer)
- (seq-list mh-seq-list))
- (with-output-to-temp-buffer temp-buffer
- (save-excursion
- (set-buffer temp-buffer)
- (erase-buffer)
- (message "Listing sequences ...")
- (insert "Sequences in folder " folder ":\n")
- (while seq-list
- (let ((name (mh-seq-name (car seq-list)))
- (sorted-seq-msgs
- (sort (copy-sequence (mh-seq-msgs (car seq-list))) '<))
- (last-col (- (window-width) 4))
- name-spec)
- (insert (setq name-spec (format "%20s:" name)))
- (while sorted-seq-msgs
- (if (> (current-column) last-col)
- (progn
- (insert "\n")
- (move-to-column (length name-spec))))
- (insert (format " %s" (car sorted-seq-msgs)))
- (setq sorted-seq-msgs (cdr sorted-seq-msgs)))
- (insert "\n"))
- (setq seq-list (cdr seq-list)))
- (goto-char (point-min))
- (message "Listing sequences...done")))))
-
-
- (defun mh-msg-is-in-seq (message)
- "Display the sequences that contain MESSAGE (default: current message)."
- (interactive (list (mh-get-msg-num t)))
- (message "Message %d is in sequences: %s"
- message
- (mapconcat 'concat
- (mh-list-to-string (mh-seq-containing-msg message t))
- " ")))
-
-
- (defun mh-narrow-to-seq (sequence)
- "Restrict display of this folder to just messages in SEQUENCE.
- Use \\<mh-folder-mode-map>\\[mh-widen] to undo this command."
- (interactive (list (mh-read-seq "Narrow to" t)))
- (with-mh-folder-updating (t)
- (cond ((mh-seq-to-msgs sequence)
- (mh-widen)
- (let ((eob (point-max)))
- (mh-copy-seq-to-point sequence eob)
- (narrow-to-region eob (point-max))
- (make-variable-buffer-local 'mh-non-seq-mode-line-annotation)
- (setq mh-non-seq-mode-line-annotation mh-mode-line-annotation)
- (setq mh-mode-line-annotation (symbol-name sequence))
- (mh-make-folder-mode-line)
- (mh-recenter nil)
- (setq mh-narrowed-to-seq sequence)))
- (t
- (error "No messages in sequence `%s'" (symbol-name sequence))))))
-
-
- (defun mh-put-msg-in-seq (msg-or-seq sequence)
- "Add MESSAGE(s) (default: displayed message) to SEQUENCE.
- If optional prefix argument provided, then prompt for the message sequence."
- (interactive (list (if current-prefix-arg
- (mh-read-seq-default "Add messages from" t)
- (mh-get-msg-num t))
- (mh-read-seq-default "Add to" nil)))
- (if (not (mh-internal-seq sequence))
- (setq mh-last-seq-used sequence))
- (mh-add-msgs-to-seq (if (numberp msg-or-seq)
- msg-or-seq
- (mh-seq-to-msgs msg-or-seq))
- sequence))
-
-
- (defun mh-widen ()
- "Remove restrictions from current folder, thereby showing all messages."
- (interactive)
- (if mh-narrowed-to-seq
- (with-mh-folder-updating (t)
- (delete-region (point-min) (point-max))
- (widen)
- (setq mh-mode-line-annotation mh-non-seq-mode-line-annotation)
- (mh-make-folder-mode-line)))
- (setq mh-narrowed-to-seq nil))
-
-
-
- ;;; Commands to manipulate sequences. Sequences are stored in an alist
- ;;; of the form:
- ;;; ((seq-name msgs ...) (seq-name msgs ...) ...)
-
-
- (defun mh-read-seq-default (prompt not-empty)
- ;; Read and return sequence name with default narrowed or previous sequence.
- (mh-read-seq prompt not-empty
- (or mh-narrowed-to-seq
- mh-last-seq-used
- (car (mh-seq-containing-msg (mh-get-msg-num nil) nil)))))
-
-
- (defun mh-read-seq (prompt not-empty &optional default)
- ;; Read and return a sequence name. Prompt with PROMPT, raise an error
- ;; if the sequence is empty and the NOT-EMPTY flag is non-nil, and supply
- ;; an optional DEFAULT sequence.
- ;; A reply of '%' defaults to the first sequence containing the current
- ;; message.
- (let* ((input (completing-read (format "%s %s %s" prompt "sequence:"
- (if default
- (format "[%s] " default)
- ""))
- (mh-seq-names mh-seq-list)))
- (seq (cond ((equal input "%")
- (car (mh-seq-containing-msg (mh-get-msg-num t) nil)))
- ((equal input "") default)
- (t (intern input))))
- (msgs (mh-seq-to-msgs seq)))
- (if (and (null msgs) not-empty)
- (error "No messages in sequence `%s'" seq))
- seq))
-
-
- (defun mh-seq-names (seq-list)
- ;; Return an alist containing the names of the SEQUENCES.
- (mapcar (function (lambda (entry) (list (symbol-name (mh-seq-name entry)))))
- seq-list))
-
-
- (defun mh-rename-seq (sequence new-name)
- "Rename SEQUENCE to have NEW-NAME."
- (interactive (list (mh-read-seq "Old" t)
- (intern (read-string "New sequence name: "))))
- (let ((old-seq (mh-find-seq sequence)))
- (or old-seq
- (error "Sequence %s does not exist" sequence))
- ;; create new sequence first, since it might raise an error.
- (mh-define-sequence new-name (mh-seq-msgs old-seq))
- (mh-undefine-sequence sequence (mh-seq-msgs old-seq))
- (rplaca old-seq new-name)))
-
-
- (defun mh-map-to-seq-msgs (func seq &rest args)
- ;; Invoke the FUNCTION at each message in the SEQUENCE, passing the
- ;; remaining ARGS as arguments.
- (save-excursion
- (let ((msgs (mh-seq-to-msgs seq)))
- (while msgs
- (if (mh-goto-msg (car msgs) t t)
- (apply func (car msgs) args))
- (setq msgs (cdr msgs))))))
-
-
- (defun mh-notate-seq (seq notation offset)
- ;; Mark the scan listing of all messages in the SEQUENCE with the CHARACTER
- ;; at the given OFFSET from the beginning of the listing line.
- (mh-map-to-seq-msgs 'mh-notate seq notation offset))
-
-
- (defun mh-add-to-sequence (seq msgs)
- ;; Add to a SEQUENCE each message the list of MSGS.
- (if (not (mh-folder-name-p seq))
- (if msgs
- (apply 'mh-exec-cmd "mark" mh-current-folder "-add"
- "-sequence" (symbol-name seq)
- (mh-coalesce-msg-list msgs)))))
-
-
- (defun mh-copy-seq-to-point (seq location)
- ;; Copy the scan listing of the messages in SEQUENCE to after the point
- ;; LOCATION in the current buffer.
- (mh-map-to-seq-msgs 'mh-copy-line-to-point seq location))
-
-
- (defun mh-copy-line-to-point (msg location)
- ;; Copy the current line to the LOCATION in the current buffer.
- (beginning-of-line)
- (save-excursion
- (let ((beginning-of-line (point))
- end)
- (forward-line 1)
- (setq end (point))
- (goto-char location)
- (insert-buffer-substring (current-buffer) beginning-of-line end))))
-
-