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851a3f9261
(pmail-fetch-field): Function deleted. Callers use pmail-get-header. (pmail-sort-messages): Replace point-offset with return-to-point, which can be nil. Call pmail-swap-buffers-maybe after that. Don't bind buffer-read-only. Bind inhibit-read-only. Be more careful in making blank line at end of msg. Don't enable undo at end.
246 lines
7.7 KiB
EmacsLisp
246 lines
7.7 KiB
EmacsLisp
;;; pmailsort.el --- Pmail: sort messages
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;; Copyright (C) 1990, 1993, 1994, 2001, 2002, 2003, 2004,
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;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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;; Author: Masanobu UMEDA <umerin@mse.kyutech.ac.jp>
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;; Maintainer: FSF
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;; Keywords: mail
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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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(eval-when-compile
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(require 'mail-utils)
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(require 'sort)
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(require 'pmail))
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(autoload 'timezone-make-date-sortable "timezone")
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(declare-function pmail-update-summary "pmailsum" (&rest ignore))
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;; Sorting messages in Pmail buffer
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;;;###autoload
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(defun pmail-sort-by-date (reverse)
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"Sort messages of current Pmail file by date.
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If prefix argument REVERSE is non-nil, sort them in reverse order."
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(interactive "P")
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(pmail-sort-messages reverse
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(function
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(lambda (msg)
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(pmail-make-date-sortable
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(pmail-get-header "Date" msg))))))
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;;;###autoload
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(defun pmail-sort-by-subject (reverse)
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"Sort messages of current Pmail file by subject.
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If prefix argument REVERSE is non-nil, sort them in reverse order."
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(interactive "P")
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(pmail-sort-messages reverse
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(function
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(lambda (msg)
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(let ((key (or (pmail-get-header "Subject" msg) ""))
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(case-fold-search t))
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;; Remove `Re:'
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(if (string-match "^\\(re:[ \t]*\\)*" key)
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(substring key (match-end 0))
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key))))))
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;;;###autoload
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(defun pmail-sort-by-author (reverse)
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"Sort messages of current Pmail file by author.
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If prefix argument REVERSE is non-nil, sort them in reverse order."
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(interactive "P")
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(pmail-sort-messages reverse
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(function
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(lambda (msg)
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(downcase ;Canonical name
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(mail-strip-quoted-names
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(or (pmail-get-header "From" msg)
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(pmail-get-header "Sender" msg) "")))))))
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;;;###autoload
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(defun pmail-sort-by-recipient (reverse)
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"Sort messages of current Pmail file by recipient.
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If prefix argument REVERSE is non-nil, sort them in reverse order."
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(interactive "P")
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(pmail-sort-messages reverse
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(function
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(lambda (msg)
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(downcase ;Canonical name
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(mail-strip-quoted-names
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(or (pmail-get-header "To" msg)
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(pmail-get-header "Apparently-To" msg) "")
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))))))
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;;;###autoload
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(defun pmail-sort-by-correspondent (reverse)
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"Sort messages of current Pmail file by other correspondent.
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If prefix argument REVERSE is non-nil, sort them in reverse order."
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(interactive "P")
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(pmail-sort-messages reverse
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(function
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(lambda (msg)
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(pmail-select-correspondent
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msg
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'("From" "Sender" "To" "Apparently-To"))))))
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(defun pmail-select-correspondent (msg fields)
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(let ((ans ""))
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(while (and fields (string= ans ""))
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(setq ans
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;; NB despite the name, this lives in mail-utils.el.
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(rmail-dont-reply-to
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(mail-strip-quoted-names
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(or (pmail-get-header (car fields) msg) ""))))
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(setq fields (cdr fields)))
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ans))
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;;;###autoload
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(defun pmail-sort-by-lines (reverse)
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"Sort messages of current Pmail file by number of lines.
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If prefix argument REVERSE is non-nil, sort them in reverse order."
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(interactive "P")
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(pmail-sort-messages reverse
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(function
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(lambda (msg)
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(count-lines (pmail-msgbeg msg)
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(pmail-msgend msg))))))
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;;;###autoload
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(defun pmail-sort-by-labels (reverse labels)
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"Sort messages of current Pmail file by labels.
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If prefix argument REVERSE is non-nil, sort them in reverse order.
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KEYWORDS is a comma-separated list of labels."
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(interactive "P\nsSort by labels: ")
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(or (string-match "[^ \t]" labels)
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(error "No labels specified"))
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(setq labels (concat (substring labels (match-beginning 0)) ","))
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(let (labelvec)
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(while (string-match "[ \t]*,[ \t]*" labels)
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(setq labelvec (cons
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(concat ", ?\\("
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(substring labels 0 (match-beginning 0))
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"\\),")
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labelvec))
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(setq labels (substring labels (match-end 0))))
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(setq labelvec (apply 'vector (nreverse labelvec)))
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(pmail-sort-messages reverse
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(function
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(lambda (msg)
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(let ((n 0))
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(while (and (< n (length labelvec))
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(not (pmail-message-labels-p
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msg (aref labelvec n))))
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(setq n (1+ n)))
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n))))))
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;; Basic functions
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(defun pmail-sort-messages (reverse keyfun)
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"Sort messages of current Pmail file.
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If 1st argument REVERSE is non-nil, sort them in reverse order.
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2nd argument KEYFUN is called with a message number, and should return a key."
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(with-current-buffer pmail-buffer
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(let ((return-to-point
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(if (pmail-buffers-swapped-p)
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(point)))
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(predicate nil) ;< or string-lessp
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(sort-lists nil))
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(pmail-swap-buffers-maybe)
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(message "Finding sort keys...")
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(widen)
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(let ((msgnum 1))
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(while (>= pmail-total-messages msgnum)
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(setq sort-lists
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(cons (list (funcall keyfun msgnum) ;Make sorting key
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(eq pmail-current-message msgnum) ;True if current
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(aref pmail-message-vector msgnum)
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(aref pmail-message-vector (1+ msgnum)))
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sort-lists))
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(if (zerop (% msgnum 10))
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(message "Finding sort keys...%d" msgnum))
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(setq msgnum (1+ msgnum))))
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(or reverse (setq sort-lists (nreverse sort-lists)))
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;; Decide predicate: < or string-lessp
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(if (numberp (car (car sort-lists))) ;Is a key numeric?
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(setq predicate (function <))
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(setq predicate (function string-lessp)))
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(setq sort-lists
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(sort sort-lists
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(function
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(lambda (a b)
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(funcall predicate (car a) (car b))))))
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(if reverse (setq sort-lists (nreverse sort-lists)))
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;; Now we enter critical region. So, keyboard quit is disabled.
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(message "Reordering messages...")
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(let ((inhibit-quit t) ;Inhibit quit
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(inhibit-read-only t)
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(current-message nil)
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(msgnum 1)
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(msginfo nil))
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;; There's little hope that we can easily undo after that.
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(buffer-disable-undo (current-buffer))
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(goto-char (pmail-msgbeg 1))
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;; To force update of all markers,
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;; keep the new copies separated from the remaining old messages.
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(insert-before-markers ?Z)
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(backward-char 1)
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;; Now reorder messages.
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(dolist (msginfo sort-lists)
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;; Swap two messages.
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(insert-buffer-substring
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(current-buffer) (nth 2 msginfo) (nth 3 msginfo))
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;; The last message may not have \n\n after it.
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(unless (bobp)
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(insert "\n"))
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(unless (looking-back "\n\n")
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(insert "\n"))
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(delete-region (nth 2 msginfo) (nth 3 msginfo))
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;; Is current message?
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(if (nth 1 msginfo)
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(setq current-message msgnum))
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(if (zerop (% msgnum 10))
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(message "Reordering messages...%d" msgnum))
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(setq msgnum (1+ msgnum)))
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;; Delete the dummy separator Z inserted before.
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(delete-char 1)
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(setq quit-flag nil)
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(pmail-set-message-counters)
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(pmail-show-message current-message)
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(if return-to-point
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(goto-char return-to-point))
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(if (pmail-summary-exists)
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(pmail-select-summary (pmail-update-summary)))))))
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(defun pmail-make-date-sortable (date)
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"Make DATE sortable using the function string-lessp."
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;; Assume the default time zone is GMT.
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(timezone-make-date-sortable date "GMT" "GMT"))
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(provide 'pmailsort)
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;; Local Variables:
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;; change-log-default-name: "ChangeLog.pmail"
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;; End:
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;; arch-tag: 665da245-f6a7-4115-ad8c-ba19216988d5
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;;; pmailsort.el ends here
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