home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The CICA Windows Explosion!
/
The CICA Windows Explosion! - Disc 2.iso
/
nt
/
emacssrc.zip
/
EMACSSRC.TAR
/
emacs-19.17
/
lisp
/
rmailsort.el
< prev
next >
Wrap
Lisp/Scheme
|
1993-07-23
|
7KB
|
201 lines
;;; rmailsort.el --- Rmail: sort messages.
;; Copyright (C) 1990, 1993 Free Software Foundation, Inc.
;; Author: Masanobu UMEDA <umerin@mse.kyutech.ac.jp>
;; Version: $Header: /home/fsf/rms/e19/lisp/RCS/rmailsort.el,v 1.15 1993/06/22 05:55:41 rms Exp $
;; 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, 675 Mass Ave, Cambridge, MA 02139, USA.
;;; Code:
(require 'sort)
(autoload 'timezone-make-date-sortable "timezone")
;; Sorting messages in Rmail buffer
(defun rmail-sort-by-date (reverse)
"Sort messages of current Rmail file by date.
If prefix argument REVERSE is non-nil, sort them in reverse order."
(interactive "P")
(rmail-sort-messages reverse
(function
(lambda (msg)
(rmail-make-date-sortable
(rmail-fetch-field msg "Date"))))))
(defun rmail-sort-by-subject (reverse)
"Sort messages of current Rmail file by subject.
If prefix argument REVERSE is non-nil, sort them in reverse order."
(interactive "P")
(rmail-sort-messages reverse
(function
(lambda (msg)
(let ((key (or (rmail-fetch-field msg "Subject") ""))
(case-fold-search t))
;; Remove `Re:'
(if (string-match "^\\(re:[ \t]+\\)*" key)
(substring key (match-end 0)) key))))))
(defun rmail-sort-by-author (reverse)
"Sort messages of current Rmail file by author.
If prefix argument REVERSE is non-nil, sort them in reverse order."
(interactive "P")
(rmail-sort-messages reverse
(function
(lambda (msg)
(downcase ;Canonical name
(mail-strip-quoted-names
(or (rmail-fetch-field msg "From")
(rmail-fetch-field msg "Sender") "")))))))
(defun rmail-sort-by-recipient (reverse)
"Sort messages of current Rmail file by recipient.
If prefix argument REVERSE is non-nil, sort them in reverse order."
(interactive "P")
(rmail-sort-messages reverse
(function
(lambda (msg)
(downcase ;Canonical name
(mail-strip-quoted-names
(or (rmail-fetch-field msg "To")
(rmail-fetch-field msg "Apparently-To") "")
))))))
(defun rmail-sort-by-correspondent (reverse)
"Sort messages of current Rmail file by other correspondent.
If prefix argument REVERSE is non-nil, sort them in reverse order."
(interactive "P")
(rmail-sort-messages reverse
(function
(lambda (msg)
(rmail-select-correspondent
msg
'("From" "Sender" "To" "Apparently-To"))))))
(defun rmail-select-correspondent (msg fields)
(let ((ans ""))
(while (and fields (string= ans ""))
(setq ans
(rmail-dont-reply-to
(mail-strip-quoted-names
(or (rmail-fetch-field msg (car fields)) ""))))
(setq fields (cdr fields)))
ans))
(defun rmail-sort-by-lines (reverse)
"Sort messages of current Rmail file by number of lines.
If prefix argument REVERSE is non-nil, sort them in reverse order."
(interactive "P")
(rmail-sort-messages reverse
(function
(lambda (msg)
(count-lines (rmail-msgbeg msgnum)
(rmail-msgend msgnum))))))
;; Basic functions
(defun rmail-sort-messages (reverse keyfun)
"Sort messages of current Rmail file.
If 1st argument REVERSE is non-nil, sort them in reverse order.
2nd argument KEYFUN is called with a message number, and should return a key."
(let ((buffer-read-only nil)
(predicate nil) ;< or string-lessp
(sort-lists nil))
(message "Finding sort keys...")
(widen)
(let ((msgnum 1))
(while (>= rmail-total-messages msgnum)
(setq sort-lists
(cons (list (funcall keyfun msgnum) ;Make sorting key
(eq rmail-current-message msgnum) ;True if current
(aref rmail-message-vector msgnum)
(aref rmail-message-vector (1+ msgnum)))
sort-lists))
(if (zerop (% msgnum 10))
(message "Finding sort keys...%d" msgnum))
(setq msgnum (1+ msgnum))))
(or reverse (setq sort-lists (nreverse sort-lists)))
;; Decide predicate: < or string-lessp
(if (numberp (car (car sort-lists))) ;Is a key numeric?
(setq predicate (function <))
(setq predicate (function string-lessp)))
(setq sort-lists
(sort sort-lists
(function
(lambda (a b)
(funcall predicate (car a) (car b))))))
(if reverse (setq sort-lists (nreverse sort-lists)))
;; Now we enter critical region. So, keyboard quit is disabled.
(message "Reordering messages...")
(let ((inhibit-quit t) ;Inhibit quit
(current-message nil)
(msgnum 1)
(msginfo nil))
;; There's little hope that we can easily undo after that.
(buffer-flush-undo (current-buffer))
(goto-char (rmail-msgbeg 1))
;; To force update of all markers.
(insert-before-markers ?Z)
(backward-char 1)
;; Now reorder messages.
(while sort-lists
(setq msginfo (car sort-lists))
;; Swap two messages.
(insert-buffer-substring
(current-buffer) (nth 2 msginfo) (nth 3 msginfo))
(delete-region (nth 2 msginfo) (nth 3 msginfo))
;; Is current message?
(if (nth 1 msginfo)
(setq current-message msgnum))
(setq sort-lists (cdr sort-lists))
(if (zerop (% msgnum 10))
(message "Reordering messages...%d" msgnum))
(setq msgnum (1+ msgnum)))
;; Delete the garbage inserted before.
(delete-char 1)
(setq quit-flag nil)
(buffer-enable-undo)
(rmail-set-message-counters)
(rmail-show-message current-message))
))
(defun rmail-fetch-field (msg field)
"Return the value of the header FIELD of MSG.
Arguments are MSG and FIELD."
(save-restriction
(widen)
(let ((next (rmail-msgend msg)))
(goto-char (rmail-msgbeg msg))
(narrow-to-region (if (search-forward "\n*** EOOH ***\n" next t)
(point)
(forward-line 1)
(point))
(progn (search-forward "\n\n" nil t) (point)))
(mail-fetch-field field))))
(defun rmail-make-date-sortable (date)
"Make DATE sortable using the function string-lessp."
;; Assume the default time zone is GMT.
(timezone-make-date-sortable date "GMT" "GMT"))
(provide 'rmailsort)
;;; rmailsort.el ends here