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1 | ;;; rmailsort.el --- Rmail: sort messages |
2 | ||
3 | ;; Copyright (C) 1990, 1993, 1994, 2001, 2002, 2003, 2004, | |
4 | ;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. | |
5 | ||
6 | ;; Author: Masanobu UMEDA <umerin@mse.kyutech.ac.jp> | |
7 | ;; Maintainer: FSF | |
8 | ;; Keywords: mail | |
9 | ||
10 | ;; This file is part of GNU Emacs. | |
11 | ||
12 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
14 | ;; the Free Software Foundation, either version 3 of the License, or | |
15 | ;; (at your option) any later version. | |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
24 | ||
25 | ;;; Commentary: | |
26 | ||
27 | ;;; Code: | |
28 | ||
efb656fd | 29 | (require 'rmail) |
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30 | |
31 | ;; Sorting messages in Rmail buffer | |
32 | ||
33 | ;;;###autoload | |
34 | (defun rmail-sort-by-date (reverse) | |
35 | "Sort messages of current Rmail file by date. | |
36 | If prefix argument REVERSE is non-nil, sort them in reverse order." | |
37 | (interactive "P") | |
38 | (rmail-sort-messages reverse | |
39 | (function | |
40 | (lambda (msg) | |
41 | (rmail-make-date-sortable | |
42 | (rmail-get-header "Date" msg)))))) | |
43 | ||
44 | ;;;###autoload | |
45 | (defun rmail-sort-by-subject (reverse) | |
46 | "Sort messages of current Rmail file by subject. | |
47 | If prefix argument REVERSE is non-nil, sort them in reverse order." | |
48 | (interactive "P") | |
49 | (rmail-sort-messages reverse | |
50 | (function | |
51 | (lambda (msg) | |
52 | (let ((key (or (rmail-get-header "Subject" msg) "")) | |
53 | (case-fold-search t)) | |
54 | ;; Remove `Re:' | |
55 | (if (string-match "^\\(re:[ \t]*\\)*" key) | |
56 | (substring key (match-end 0)) | |
57 | key)))))) | |
58 | ||
59 | ;;;###autoload | |
60 | (defun rmail-sort-by-author (reverse) | |
61 | "Sort messages of current Rmail file by author. | |
62 | If prefix argument REVERSE is non-nil, sort them in reverse order." | |
63 | (interactive "P") | |
64 | (rmail-sort-messages reverse | |
65 | (function | |
66 | (lambda (msg) | |
67 | (downcase ;Canonical name | |
68 | (mail-strip-quoted-names | |
69 | (or (rmail-get-header "From" msg) | |
70 | (rmail-get-header "Sender" msg) ""))))))) | |
71 | ||
72 | ;;;###autoload | |
73 | (defun rmail-sort-by-recipient (reverse) | |
74 | "Sort messages of current Rmail file by recipient. | |
75 | If prefix argument REVERSE is non-nil, sort them in reverse order." | |
76 | (interactive "P") | |
77 | (rmail-sort-messages reverse | |
78 | (function | |
79 | (lambda (msg) | |
80 | (downcase ;Canonical name | |
81 | (mail-strip-quoted-names | |
82 | (or (rmail-get-header "To" msg) | |
83 | (rmail-get-header "Apparently-To" msg) "") | |
84 | )))))) | |
85 | ||
86 | ;;;###autoload | |
87 | (defun rmail-sort-by-correspondent (reverse) | |
88 | "Sort messages of current Rmail file by other correspondent. | |
89 | If prefix argument REVERSE is non-nil, sort them in reverse order." | |
90 | (interactive "P") | |
91 | (rmail-sort-messages reverse | |
92 | (function | |
93 | (lambda (msg) | |
94 | (rmail-select-correspondent | |
95 | msg | |
96 | '("From" "Sender" "To" "Apparently-To")))))) | |
97 | ||
98 | (defun rmail-select-correspondent (msg fields) | |
99 | (let ((ans "")) | |
100 | (while (and fields (string= ans "")) | |
101 | (setq ans | |
102 | ;; NB despite the name, this lives in mail-utils.el. | |
103 | (rmail-dont-reply-to | |
104 | (mail-strip-quoted-names | |
105 | (or (rmail-get-header (car fields) msg) "")))) | |
106 | (setq fields (cdr fields))) | |
107 | ans)) | |
108 | ||
109 | ;;;###autoload | |
110 | (defun rmail-sort-by-lines (reverse) | |
111 | "Sort messages of current Rmail file by number of lines. | |
112 | If prefix argument REVERSE is non-nil, sort them in reverse order." | |
113 | (interactive "P") | |
114 | (rmail-sort-messages reverse | |
115 | (function | |
116 | (lambda (msg) | |
117 | (count-lines (rmail-msgbeg msg) | |
118 | (rmail-msgend msg)))))) | |
119 | ||
120 | ;;;###autoload | |
121 | (defun rmail-sort-by-labels (reverse labels) | |
122 | "Sort messages of current Rmail file by labels. | |
123 | If prefix argument REVERSE is non-nil, sort them in reverse order. | |
124 | KEYWORDS is a comma-separated list of labels." | |
125 | (interactive "P\nsSort by labels: ") | |
126 | (or (string-match "[^ \t]" labels) | |
127 | (error "No labels specified")) | |
128 | (setq labels (concat (substring labels (match-beginning 0)) ",")) | |
129 | (let (labelvec) | |
130 | (while (string-match "[ \t]*,[ \t]*" labels) | |
131 | (setq labelvec (cons | |
132 | (concat ", ?\\(" | |
133 | (substring labels 0 (match-beginning 0)) | |
134 | "\\),") | |
135 | labelvec)) | |
136 | (setq labels (substring labels (match-end 0)))) | |
137 | (setq labelvec (apply 'vector (nreverse labelvec))) | |
138 | (rmail-sort-messages reverse | |
139 | (function | |
140 | (lambda (msg) | |
141 | (let ((n 0)) | |
142 | (while (and (< n (length labelvec)) | |
143 | (not (rmail-message-labels-p | |
144 | msg (aref labelvec n)))) | |
145 | (setq n (1+ n))) | |
146 | n)))))) | |
147 | \f | |
148 | ;; Basic functions | |
efb656fd | 149 | (declare-function rmail-update-summary "rmailsum" (&rest ignore)) |
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150 | |
151 | (defun rmail-sort-messages (reverse keyfun) | |
152 | "Sort messages of current Rmail file. | |
153 | If 1st argument REVERSE is non-nil, sort them in reverse order. | |
154 | 2nd argument KEYFUN is called with a message number, and should return a key." | |
155 | (with-current-buffer rmail-buffer | |
156 | (let ((return-to-point | |
157 | (if (rmail-buffers-swapped-p) | |
158 | (point))) | |
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159 | (sort-lists nil)) |
160 | (rmail-swap-buffers-maybe) | |
161 | (message "Finding sort keys...") | |
162 | (widen) | |
163 | (let ((msgnum 1)) | |
164 | (while (>= rmail-total-messages msgnum) | |
165 | (setq sort-lists | |
166 | (cons (list (funcall keyfun msgnum) ;Make sorting key | |
167 | (eq rmail-current-message msgnum) ;True if current | |
168 | (aref rmail-message-vector msgnum) | |
169 | (aref rmail-message-vector (1+ msgnum))) | |
170 | sort-lists)) | |
171 | (if (zerop (% msgnum 10)) | |
172 | (message "Finding sort keys...%d" msgnum)) | |
173 | (setq msgnum (1+ msgnum)))) | |
174 | (or reverse (setq sort-lists (nreverse sort-lists))) | |
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175 | (setq sort-lists |
176 | (sort sort-lists | |
73d7bcb9 SM |
177 | ;; Decide predicate: < or string-lessp |
178 | (if (numberp (car (car sort-lists))) ;Is a key numeric? | |
179 | 'car-less-than-car | |
180 | (function | |
181 | (lambda (a b) | |
182 | (string-lessp (car a) (car b))))))) | |
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183 | (if reverse (setq sort-lists (nreverse sort-lists))) |
184 | ;; Now we enter critical region. So, keyboard quit is disabled. | |
185 | (message "Reordering messages...") | |
186 | (let ((inhibit-quit t) ;Inhibit quit | |
187 | (inhibit-read-only t) | |
188 | (current-message nil) | |
189 | (msgnum 1) | |
190 | (msginfo nil)) | |
191 | ;; There's little hope that we can easily undo after that. | |
192 | (buffer-disable-undo (current-buffer)) | |
193 | (goto-char (rmail-msgbeg 1)) | |
194 | ;; To force update of all markers, | |
195 | ;; keep the new copies separated from the remaining old messages. | |
196 | (insert-before-markers ?Z) | |
197 | (backward-char 1) | |
198 | ;; Now reorder messages. | |
199 | (dolist (msginfo sort-lists) | |
200 | ;; Swap two messages. | |
201 | (insert-buffer-substring | |
202 | (current-buffer) (nth 2 msginfo) (nth 3 msginfo)) | |
203 | ;; The last message may not have \n\n after it. | |
204 | (unless (bobp) | |
205 | (insert "\n")) | |
206 | (unless (looking-back "\n\n") | |
207 | (insert "\n")) | |
208 | (delete-region (nth 2 msginfo) (nth 3 msginfo)) | |
209 | ;; Is current message? | |
210 | (if (nth 1 msginfo) | |
211 | (setq current-message msgnum)) | |
212 | (if (zerop (% msgnum 10)) | |
213 | (message "Reordering messages...%d" msgnum)) | |
214 | (setq msgnum (1+ msgnum))) | |
215 | ;; Delete the dummy separator Z inserted before. | |
216 | (delete-char 1) | |
217 | (setq quit-flag nil) | |
218 | (rmail-set-message-counters) | |
a1a29341 | 219 | (rmail-show-message-1 current-message) |
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220 | (if return-to-point |
221 | (goto-char return-to-point)) | |
222 | (if (rmail-summary-exists) | |
223 | (rmail-select-summary (rmail-update-summary))))))) | |
224 | ||
efb656fd GM |
225 | (autoload 'timezone-make-date-sortable "timezone") |
226 | ||
537ab246 BG |
227 | (defun rmail-make-date-sortable (date) |
228 | "Make DATE sortable using the function string-lessp." | |
229 | ;; Assume the default time zone is GMT. | |
230 | (timezone-make-date-sortable date "GMT" "GMT")) | |
231 | ||
232 | (provide 'rmailsort) | |
233 | ||
537ab246 BG |
234 | ;; arch-tag: 665da245-f6a7-4115-ad8c-ba19216988d5 |
235 | ;;; rmailsort.el ends here |