1 ;;; wl-util.el --- Utility modules for Wanderlust.
3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
4 ;; Copyright (C) 2000 A. SAGATA <sagata@nttvdt.hil.ntt.co.jp>
5 ;; Copyright (C) 2000 Katsumi Yamaoka <yamaoka@jpl.org>
7 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
8 ;; A. SAGATA <sagata@nttvdt.hil.ntt.co.jp>
9 ;; Katsumi Yamaoka <yamaoka@jpl.org>
10 ;; Keywords: mail, net news
12 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
14 ;; This program is free software; you can redistribute it and/or modify
15 ;; it under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation; either version 2, or (at your option)
19 ;; This program is distributed in the hope that it will be useful,
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ;; GNU General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs; see the file COPYING. If not, write to the
26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
27 ;; Boston, MA 02111-1307, USA.
39 (condition-case nil (require 'pp) (error nil))
43 (defalias-maybe 'next-command-event 'ignore)
44 (defalias-maybe 'event-to-character 'ignore)
45 (defalias-maybe 'key-press-event-p 'ignore)
46 (defalias-maybe 'button-press-event-p 'ignore)
47 (defalias-maybe 'set-process-kanji-code 'ignore)
48 (defalias-maybe 'set-process-coding-system 'ignore)
49 (defalias-maybe 'dispatch-event 'ignore))
51 (defalias 'wl-set-work-buf 'elmo-set-work-buf)
52 (make-obsolete 'wl-set-work-buf 'elmo-set-work-buf)
54 (defmacro wl-append (val func)
56 (list 'nconc val func)
57 (list 'setq val func)))
59 (defalias 'wl-parse 'elmo-parse)
60 (make-obsolete 'wl-parse 'elmo-parse)
62 (defun wl-delete-duplicates (list &optional all hack-addresses)
63 "Delete duplicate equivalent strings from the LIST.
64 If ALL is t, then if there is more than one occurrence of a string in the LIST,
65 then all occurrences of it are removed instead of just the subsequent ones.
66 If HACK-ADDRESSES is t, then the strings are considered to be mail addresses,
67 and only the address part is compared (so that \"Name <foo>\" and \"foo\"
68 would be considered to be equivalent.)"
69 (let ((hashtable (make-vector 29 0))
72 (fillarray hashtable 0)
76 (wl-address-header-extract-address (car list))
78 sym-string (or sym-string "-unparseable-garbage-")
79 sym (intern sym-string hashtable))
81 (and all (setcar (symbol-value sym) nil))
82 (setq new-list (cons (car list) new-list))
84 (setq list (cdr list)))
85 (delq nil (nreverse new-list))))
88 (defalias 'wl-string-member 'elmo-string-member)
89 (defalias 'wl-string-match-member 'elmo-string-match-member)
90 (defalias 'wl-string-delete-match 'elmo-string-delete-match)
91 (defalias 'wl-string-match-assoc 'elmo-string-match-assoc)
92 (defalias 'wl-string-assoc 'elmo-string-assoc)
93 (defalias 'wl-string-rassoc 'elmo-string-rassoc)
95 (defun wl-parse-addresses (string)
100 (let (list start s char)
102 (goto-char (point-min))
103 (skip-chars-forward "\t\f\n\r ")
106 (skip-chars-forward "^\"\\,(")
107 (setq char (following-char))
113 (setq s (buffer-substring start (point)))
114 (if (or (null (string-match "^[\t\f\n\r ]+$" s))
115 (not (string= s "")))
116 (setq list (cons s list)))
117 (skip-chars-forward ",\t\f\n\r ")
118 (setq start (point)))
120 (re-search-forward "[^\\]\"" nil 0))
124 (while (and (not (eobp)) (not (zerop parens)))
125 (re-search-forward "[()]" nil 0)
127 (= (char-after (- (point) 2)) ?\\)))
128 ((= (preceding-char) ?\()
129 (setq parens (1+ parens)))
131 (setq parens (1- parens)))))))))
132 (setq s (buffer-substring start (point)))
133 (if (and (null (string-match "^[\t\f\n\r ]+$" s))
134 (not (string= s "")))
135 (setq list (cons s list)))
136 (nreverse list)) ; jwz: fixed order
139 (defun wl-append-element (list element)
141 (append list (list element))
144 (defmacro wl-push (v l)
145 "Insert V at the head of the list stored in L."
146 (list 'setq l (list 'cons v l)))
149 "Remove the head of the list stored in L."
150 (list 'car (list 'prog1 l (list 'setq l (list 'cdr l)))))
152 (defun wl-ask-folder (func mes-string)
154 (cmd (if (featurep 'xemacs)
155 (event-to-character last-command-event)
156 (string-to-char (format "%s" (this-command-keys))))))
158 (setq key (car (setq keve (wl-read-event-char))))
159 (if (or (equal key ?\ )
165 (wl-push (cdr keve) unread-command-events))))
167 ;(defalias 'wl-make-hash 'elmo-make-hash)
168 ;;(make-obsolete 'wl-make-hash 'elmo-make-hash)
170 ;;(defalias 'wl-get-hash-val 'elmo-get-hash-val)
171 ;;(make-obsolete 'wl-get-hash-val 'elmo-get-hash-val)
173 ;;(defalias 'wl-set-hash-val 'elmo-set-hash-val)
174 ;;(make-obsolete 'wl-set-hash-val 'elmo-set-hash-val)
176 (defsubst wl-set-string-width (width string &optional padding ignore-invalid)
177 "Make a new string which have specified WIDTH and content of STRING.
178 `wl-invalid-character-message' is used when invalid character is contained.
179 If WIDTH is negative number, padding chars are added to the head and
180 otherwise, padding chars are added to the tail of the string.
181 The optional 3rd arg PADDING, if non-nil, specifies a padding character
182 to add the result instead of white space.
183 If optional 4th argument is non-nil, don't use `wl-invalid-character-message'
184 even when invalid character is contained."
186 ((and (fboundp 'string-width) (fboundp 'truncate-string-to-width)
187 (not (featurep 'xemacs)))
188 (if (> (string-width string) (abs width))
189 (setq string (truncate-string-to-width string (abs width))))
190 (if (= (string-width string) (abs width))
192 (when (and (not ignore-invalid)
193 (< (abs width) (string-width string)))
195 (truncate-string-to-width wl-invalid-character-message
197 (let ((paddings (make-string
198 (max 0 (- (abs width) (string-width string)))
201 (concat paddings string)
202 (concat string paddings)))))
205 (elmo-set-buffer-multibyte default-enable-multibyte-characters)
207 (when (> (current-column) (abs width))
208 (when (> (move-to-column (abs width)) (abs width))
209 (condition-case nil ; ignore error
212 (setq string (buffer-substring (point-min) (point))))
213 (if (= (current-column) (abs width))
215 (let ((paddings (make-string (- (abs width) (current-column))
218 (concat paddings string)
219 (concat string paddings))))))))
221 (defun wl-mode-line-buffer-identification (&optional id)
222 (let ((priorities '(biff plug title)))
223 (let ((items (reverse wl-mode-line-display-priority-list))
226 (setq item (car items)
228 (unless (memq item '(biff plug))
230 (setq priorities (cons item (delq item priorities)))))
231 (let (priority result)
233 (setq priority (car priorities)
234 priorities (cdr priorities))
237 (when wl-biff-check-folder-list
238 (setq result (append result '((wl-modeline-biff-status
239 wl-modeline-biff-state-on
240 wl-modeline-biff-state-off))))))
242 (when wl-show-plug-status-on-modeline
243 (setq result (append result '((wl-modeline-plug-status
244 wl-modeline-plug-state-on
245 wl-modeline-plug-state-off))))))
247 (setq result (append result (or id '("Wanderlust: %12b")))))))
249 (setq mode-line-buffer-identification (if (stringp (car result))
252 (force-mode-line-update t)))))
254 (defalias 'wl-display-error 'elmo-display-error)
255 (make-obsolete 'wl-display-error 'elmo-display-error)
257 (defun wl-get-assoc-list-value (assoc-list folder &optional match)
259 (let ((alist assoc-list)
262 (setq pair (car alist))
263 (if (string-match (car pair) folder)
264 (cond ((eq match 'all)
265 (setq value (append value (list (cdr pair)))))
266 ((eq match 'all-list)
267 (setq value (append value (cdr pair))))
269 (throw 'found (cdr pair)))))
270 (setq alist (cdr alist)))
273 (defmacro wl-match-string (pos string)
274 "Substring POSth matched STRING."
275 (` (substring (, string) (match-beginning (, pos)) (match-end (, pos)))))
277 (defmacro wl-match-buffer (pos)
278 "Substring POSth matched from the current buffer."
279 (` (buffer-substring-no-properties
280 (match-beginning (, pos)) (match-end (, pos)))))
282 (put 'wl-as-coding-system 'lisp-indent-function 1)
283 (put 'wl-as-mime-charset 'lisp-indent-function 1)
288 (defmacro wl-as-coding-system (coding-system &rest body)
289 (` (let ((coding-system-for-read (, coding-system))
290 (coding-system-for-write (, coding-system)))
293 (defmacro wl-as-coding-system (coding-system &rest body)
294 (` (let ((file-coding-system-for-read (, coding-system))
295 (file-coding-system (, coding-system)))
298 (defmacro wl-as-coding-system (coding-system &rest body)
299 (` (progn (,@ body)))))))
301 (defmacro wl-as-mime-charset (mime-charset &rest body)
302 (` (wl-as-coding-system (mime-charset-to-coding-system (, mime-charset))
305 (defalias 'wl-string 'elmo-string)
306 (make-obsolete 'wl-string 'elmo-string)
308 ;; Check if active region exists or not.
309 (if (boundp 'mark-active)
310 (defmacro wl-region-exists-p ()
312 (if (fboundp 'region-exists-p)
313 (defmacro wl-region-exists-p ()
314 (list 'region-exists-p))))
316 (if (not (fboundp 'overlays-in))
317 (defun overlays-in (beg end)
318 "Return a list of the overlays that overlap the region BEG ... END.
319 Overlap means that at least one character is contained within the overlay
320 and also contained within the specified region.
321 Empty overlays are included in the result if they are located at BEG
322 or between BEG and END."
323 (let ((ovls (overlay-lists))
329 (setq ovls (nconc (car ovls) (cdr ovls)))
333 (if (or (and (<= (overlay-start tmp) end)
334 (>= (overlay-start tmp) beg))
335 (and (<= (overlay-end tmp) end)
336 (>= (overlay-end tmp) beg)))
337 (setq retval (cons tmp retval))))
340 (defsubst wl-repeat-string (str times)
344 (setq ret-val (concat ret-val str))
345 (setq loop (- loop 1)))
348 (defun wl-list-diff (list1 list2)
349 "Return a list of elements of LIST1 that do not appear in LIST2."
350 (let ((list1 (copy-sequence list1)))
352 (setq list1 (delq (car list2) list1))
353 (setq list2 (cdr list2)))
356 (defun wl-append-assoc-list (item value alist)
357 "make assoc list '((item1 value1-1 value1-2 ...)) (item2 value2-1 ...)))"
358 (let ((entry (assoc item alist)))
361 (when (not (member value (cdr entry)))
362 (nconc entry (list value)))
365 (list (list item value))))))
367 (defun wl-delete-alist (key alist)
368 "Delete by side effect any entries specified with KEY from ALIST.
369 Return the modified ALIST. Key comparison is done with `assq'.
370 Write `(setq foo (wl-delete-alist key foo))' to be sure of changing
373 (while (setq entry (assq key alist))
374 (setq alist (delq entry alist)))
377 (defun wl-delete-associations (keys alist)
378 "Delete by side effect any entries specified with KEYS from ALIST.
379 Return the modified ALIST. KEYS must be a list of keys for ALIST.
380 Deletion is done with `wl-delete-alist'.
381 Write `(setq foo (wl-delete-associations keys foo))' to be sure of
382 changing the value of `foo'."
384 (setq alist (wl-delete-alist (car keys) alist))
385 (setq keys (cdr keys)))
388 (defun wl-inverse-alist (keys alist)
389 "Inverse ALIST, copying.
390 Return an association list represents the inverse mapping of ALIST,
391 from objects to KEYS.
392 The objects mapped (cdrs of elements of the ALIST) are shared."
393 (let (x y tmp result)
396 (setq y (cdr (assq x alist)))
398 (if (setq tmp (assoc y result))
399 (setq result (cons (append tmp (list x))
400 (delete tmp result)))
401 (setq result (cons (list y x) result))))
402 (setq keys (cdr keys)))
407 (static-unless (fboundp 'pp)
408 (defvar pp-escape-newlines t)
409 (defun pp (object &optional stream)
410 "Output the pretty-printed representation of OBJECT, any Lisp object.
411 Quoting characters are printed when needed to make output that `read'
412 can handle, whenever this is possible.
413 Output stream is STREAM, or value of `standard-output' (which see)."
414 (princ (pp-to-string object) (or stream standard-output)))
416 (defun pp-to-string (object)
417 "Return a string containing the pretty-printed representation of OBJECT,
418 any Lisp object. Quoting characters are used when needed to make output
419 that `read' can handle, whenever this is possible."
421 (set-buffer (generate-new-buffer " pp-to-string"))
424 (lisp-mode-variables t)
425 (let ((print-escape-newlines pp-escape-newlines))
426 (prin1 object (current-buffer)))
427 (goto-char (point-min))
430 ((looking-at "\\s(\\|#\\s(")
431 (while (looking-at "\\s(\\|#\\s(")
433 ((and (looking-at "\\(quote[ \t]+\\)\\([^.)]\\)")
434 (> (match-beginning 1) 1)
435 (= ?\( (char-after (1- (match-beginning 1))))
436 ;; Make sure this is a two-element list.
438 (goto-char (match-beginning 2))
440 ;; Avoid mucking with match-data; does this test work?
441 (char-equal ?\) (char-after (point)))))
442 ;; -1 gets the paren preceding the quote as well.
443 (delete-region (1- (match-beginning 1)) (match-end 1))
446 (if (looking-at "[ \t]*\)")
447 (delete-region (match-beginning 0) (match-end 0))
448 (error "Malformed quote"))
450 ((condition-case err-var
451 (prog1 t (down-list 1))
454 (skip-chars-backward " \t")
457 (progn (skip-chars-forward " \t") (point)))
458 (if (not (char-equal ?' (char-after (1- (point)))))
460 ((condition-case err-var
461 (prog1 t (up-list 1))
463 (while (looking-at "\\s)")
465 (skip-chars-backward " \t")
468 (progn (skip-chars-forward " \t") (point)))
469 (if (not (char-equal ?' (char-after (1- (point)))))
471 (t (goto-char (point-max)))))
472 (goto-char (point-min))
475 (kill-buffer (current-buffer))))))
477 (defsubst wl-get-date-iso8601 (date)
478 (or (get-text-property 0 'wl-date date)
479 (let* ((d1 (timezone-fix-time date nil nil))
480 (time (format "%04d%02d%02dT%02d%02d%02d"
481 (aref d1 0) (aref d1 1) (aref d1 2)
482 (aref d1 3) (aref d1 4) (aref d1 5))))
483 (put-text-property 0 1 'wl-date time date)
486 (defun wl-make-date-string ()
487 (let ((s (current-time-string)))
488 (string-match "\\`\\([A-Z][a-z][a-z]\\) +[A-Z][a-z][a-z] +[0-9][0-9]? *[0-9][0-9]?:[0-9][0-9]:[0-9][0-9] *[0-9]?[0-9]?[0-9][0-9]"
490 (concat (wl-match-string 1 s) ", "
491 (timezone-make-date-arpa-standard s (current-time-zone)))))
493 (defun wl-date-iso8601 (date)
494 "Convert the DATE to YYMMDDTHHMMSS."
496 (wl-get-date-iso8601 date)
499 (defun wl-day-number (date)
500 (let ((dat (mapcar '(lambda (s) (and s (string-to-int s)) )
501 (timezone-parse-date date))))
502 (timezone-absolute-from-gregorian
503 (nth 1 dat) (nth 2 dat) (car dat))))
505 (defun wl-url-news (url &rest args)
506 (interactive "sURL: ")
507 (if (string-match "^news:\\(.*\\)$" url)
508 (wl-summary-goto-folder-subr
509 (concat "-" (elmo-match-string 1 url)) nil nil nil t)
510 (message "Not a news: url.")))
512 (defun wl-url-nntp (url &rest args)
513 (interactive "sURL: ")
514 (let (folder fld-name server port msg)
516 "^nntp://\\([^:/]*\\):?\\([0-9]*\\)/\\([^/]*\\)/\\([0-9]*\\).*$" url)
518 (if (eq (length (setq fld-name
519 (elmo-match-string 3 url))) 0)
521 (if (eq (length (setq port
522 (elmo-match-string 2 url))) 0)
523 (setq port (int-to-string elmo-nntp-default-port)))
524 (if (eq (length (setq server
525 (elmo-match-string 1 url))) 0)
526 (setq server elmo-nntp-default-server))
527 (setq folder (concat "-" fld-name "@" server ":" port))
528 (if (eq (length (setq msg
529 (elmo-match-string 4 url))) 0)
530 (wl-summary-goto-folder-subr
531 folder nil nil nil t)
532 (wl-summary-goto-folder-subr
533 folder 'update nil nil t)
534 (goto-char (point-min))
535 (re-search-forward (concat "^ *" msg) nil t)
536 (wl-summary-redisplay)))
537 (message "Not a nntp: url."))))
539 (defmacro wl-concat-list (list separator)
540 (` (mapconcat 'identity (delete "" (delq nil (, list))) (, separator))))
542 (defmacro wl-current-message-buffer ()
544 (if (buffer-live-p wl-current-summary-buffer)
545 (set-buffer wl-current-summary-buffer))
548 (defmacro wl-kill-buffers (regexp)
551 (if (and (buffer-name x)
552 (string-match (, regexp) (buffer-name x)))
557 (defun wl-collect-summary ()
560 (function (lambda (x)
561 (if (and (string-match "^Summary"
565 (equal major-mode 'wl-summary-mode)))
566 (setq result (nconc result (list x))))))
570 (defun wl-collect-draft ()
571 (let ((draft-regexp (concat
573 (elmo-localdir-folder-directory-internal
574 (wl-folder-get-elmo-folder wl-draft-folder)))))
577 (function (lambda (x)
579 (setq buf (with-current-buffer x
580 wl-draft-buffer-file-name))
581 (string-match draft-regexp buf))
582 (setq result (nconc result (list x))))))
586 (static-if (fboundp 'read-directory-name)
587 (defun wl-read-directory-name (prompt dir)
588 (read-directory-name prompt dir dir))
589 (defun wl-read-directory-name (prompt dir)
590 (let ((dir (read-file-name prompt dir)))
591 (unless (file-directory-p dir)
592 (error "%s is not directory" dir))
595 ;; local variable check.
596 (static-if (fboundp 'local-variable-p)
597 (defalias 'wl-local-variable-p 'local-variable-p)
598 (defmacro wl-local-variable-p (symbol &optional buffer)
599 (` (if (assq (, symbol) (buffer-local-variables (, buffer)))
602 (defun wl-number-base36 (num len)
607 (concat (wl-number-base36 (/ num 36) (1- len))
608 (char-to-string (aref "zyxwvutsrqponmlkjihgfedcba9876543210"
611 (defvar wl-unique-id-char nil)
613 (defun wl-unique-id ()
614 ;; Don't use microseconds from (current-time), they may be unsupported.
615 ;; Instead we use this randomly inited counter.
616 (setq wl-unique-id-char
617 (% (1+ (or wl-unique-id-char (logand (random t) (1- (lsh 1 20)))))
618 ;; (current-time) returns 16-bit ints,
619 ;; and 2^16*25 just fits into 4 digits i base 36.
621 (let ((tm (static-if (fboundp 'current-time)
623 (let* ((cts (split-string (current-time-string) "[ :]"))
624 (m (cdr (assoc (nth 1 cts)
625 '(("Jan" . "01") ("Feb" . "02")
626 ("Mar" . "03") ("Apr" . "04")
627 ("May" . "05") ("Jun" . "06")
628 ("Jul" . "07") ("Aug" . "08")
629 ("Sep" . "09") ("Oct" . "10")
630 ("Nov" . "11") ("Dec" . "12"))))))
631 (list (string-to-int (concat (nth 6 cts) m
632 (substring (nth 2 cts) 0 1)))
633 (string-to-int (concat (substring (nth 2 cts) 1)
634 (nth 4 cts) (nth 5 cts)
637 (if (memq system-type '(ms-dos emx vax-vms))
638 (let ((user (downcase (user-login-name))))
639 (while (string-match "[^a-z0-9_]" user)
640 (aset user (match-beginning 0) ?_))
642 (wl-number-base36 (user-uid) -1))
643 (wl-number-base36 (+ (car tm)
644 (lsh (% wl-unique-id-char 25) 16)) 4)
645 (wl-number-base36 (+ (nth 1 tm)
646 (lsh (/ wl-unique-id-char 25) 16)) 4)
647 ;; Append the name of the message interface, because while the
648 ;; generated ID is unique to this newsreader, other newsreaders
649 ;; might otherwise generate the same ID via another algorithm.
650 wl-unique-id-suffix)))
652 (defvar wl-message-id-function 'wl-draft-make-message-id-string)
653 (defun wl-draft-make-message-id-string ()
654 "Return Message-ID field value."
655 (concat "<" (wl-unique-id)
656 (let (from user domain)
657 (if (and wl-message-id-use-wl-from
659 (setq from (wl-address-header-extract-address wl-from))
660 (and (string-match "^\\(.*\\)@\\(.*\\)$" from)
661 (setq user (match-string 1 from))
662 (setq domain (match-string 2 from)))))
663 (format "%%%s@%s>" user domain)
665 (or wl-message-id-domain
667 (concat (system-name) "." wl-local-domain)
671 (defvar wl-load-profile-function 'wl-local-load-profile)
672 (defun wl-local-load-profile ()
673 "Load `wl-init-file'."
674 (message "Initializing...")
675 (load wl-init-file 'noerror 'nomessage))
677 (defun wl-load-profile ()
678 "Call `wl-load-profile-function' function."
679 (funcall wl-load-profile-function))
683 (defmacro wl-count-lines ()
686 (count-lines 1 (point)))))
688 (defun wl-horizontal-recenter ()
689 "Recenter the current buffer horizontally."
691 (re-search-forward "[[<]" (point-at-eol) t)
692 (if (< (current-column) (/ (window-width) 2))
693 (set-window-hscroll (get-buffer-window (current-buffer) t) 0)
694 (let* ((orig (point))
695 (end (window-end (get-buffer-window (current-buffer) t)))
698 ;; Find the longest line currently displayed in the window.
699 (goto-char (window-start))
700 (while (and (not (eobp))
703 (setq max (max max (current-column)))
706 ;; Scroll horizontally to center (sort of) the point.
707 (if (> max (window-width))
709 (get-buffer-window (current-buffer) t)
710 (min (- (current-column) (/ (window-width) 3))
711 (+ 2 (- max (window-width)))))
712 (set-window-hscroll (get-buffer-window (current-buffer) t) 0))
718 (defvar wl-biff-timer-name "wl-biff")
720 (defun wl-biff-stop ()
721 (when (get-itimer wl-biff-timer-name)
722 (delete-itimer wl-biff-timer-name)))
724 (defun wl-biff-start ()
726 (when wl-biff-check-folder-list
727 (wl-biff-check-folders)
728 (start-itimer wl-biff-timer-name 'wl-biff-check-folders
729 wl-biff-check-interval wl-biff-check-interval))))
731 ((and (condition-case nil (require 'timer) (error nil));; FSFmacs 19+
732 (fboundp 'timer-activate))
734 (defun wl-biff-stop ()
735 (when (get 'wl-biff 'timer)
736 (cancel-timer (get 'wl-biff 'timer))))
738 (defun wl-biff-start ()
740 (when wl-biff-check-folder-list
741 (wl-biff-check-folders)
742 (if (get 'wl-biff 'timer)
743 (timer-activate (get 'wl-biff 'timer))
744 (put 'wl-biff 'timer (run-at-time
745 (timer-next-integral-multiple-of-time
746 (current-time) wl-biff-check-interval)
747 wl-biff-check-interval
748 'wl-biff-event-handler)))))
750 (defun-maybe timer-next-integral-multiple-of-time (time secs)
751 "Yield the next value after TIME that is an integral multiple of SECS.
752 More precisely, the next value, after TIME, that is an integral multiple
753 of SECS seconds since the epoch. SECS may be a fraction.
754 This function is imported from Emacs 20.7."
755 (let ((time-base (ash 1 16)))
757 ;; Use floating point, taking care to not lose precision.
758 (let* ((float-time-base (float time-base))
760 (time-usec (+ (* million
761 (+ (* float-time-base (nth 0 time))
764 (secs-usec (* million secs))
765 (mod-usec (mod time-usec secs-usec))
766 (next-usec (+ (- time-usec mod-usec) secs-usec))
767 (time-base-million (* float-time-base million)))
768 (list (floor next-usec time-base-million)
769 (floor (mod next-usec time-base-million) million)
770 (floor (mod next-usec million))))
771 ;; Floating point is not supported.
772 ;; Use integer arithmetic, avoiding overflow if possible.
773 (let* ((mod-sec (mod (+ (* (mod time-base secs)
774 (mod (nth 0 time) secs))
777 (next-1-sec (+ (- (nth 1 time) mod-sec) secs)))
778 (list (+ (nth 0 time) (floor next-1-sec time-base))
779 (mod next-1-sec time-base)
782 (defun wl-biff-event-handler ()
783 ;; PAKURing from FSF:time.el
784 (wl-biff-check-folders)
785 ;; Do redisplay right now, if no input pending.
787 (let* ((current (current-time))
788 (timer (get 'wl-biff 'timer))
789 ;; Compute the time when this timer will run again, next.
790 (next-time (timer-relative-time
791 (list (aref timer 1) (aref timer 2) (aref timer 3))
792 (* 5 (aref timer 4)) 0)))
793 ;; If the activation time is far in the past,
794 ;; skip executions until we reach a time in the future.
795 ;; This avoids a long pause if Emacs has been suspended for hours.
796 (or (> (nth 0 next-time) (nth 0 current))
797 (and (= (nth 0 next-time) (nth 0 current))
798 (> (nth 1 next-time) (nth 1 current)))
799 (and (= (nth 0 next-time) (nth 0 current))
800 (= (nth 1 next-time) (nth 1 current))
801 (> (nth 2 next-time) (nth 2 current)))
803 (timer-set-time timer (timer-next-integral-multiple-of-time
804 current wl-biff-check-interval)
805 wl-biff-check-interval)
806 (timer-activate timer))))))
808 (fset 'wl-biff-stop 'ignore)
809 (fset 'wl-biff-start 'ignore)))
811 (defsubst wl-biff-notify (new-mails notify-minibuf)
812 (when (and (not wl-modeline-biff-status) (> new-mails 0))
813 (run-hooks 'wl-biff-notify-hook))
814 (when (and wl-modeline-biff-status (eq new-mails 0))
815 (run-hooks 'wl-biff-unnotify-hook))
816 (setq wl-modeline-biff-status (> new-mails 0))
817 (force-mode-line-update t)
819 (cond ((zerop new-mails) (message "No mail."))
820 ((= 1 new-mails) (message "You have a new mail."))
821 (t (message "You have %d new mails." new-mails)))))
823 ;; Internal variable.
824 (defvar wl-biff-check-folders-running nil)
826 (defun wl-biff-check-folders ()
828 (if wl-biff-check-folders-running
829 (when (interactive-p)
830 (message "Biff process is running."))
831 (setq wl-biff-check-folders-running t)
832 (when (interactive-p)
833 (message "Checking new mails..."))
835 (flist (or wl-biff-check-folder-list (list wl-default-folder)))
837 (if (eq (length flist) 1)
838 (wl-biff-check-folder-async (wl-folder-get-elmo-folder
839 (car flist) 'biff) (interactive-p))
842 (setq folder (wl-folder-get-elmo-folder (car flist))
844 (when (elmo-folder-plugged-p folder)
847 (nth 0 (wl-biff-check-folder folder))))))
848 (setq wl-biff-check-folders-running nil)
849 (wl-biff-notify new-mails (interactive-p)))))))
851 (defun wl-biff-check-folder (folder)
852 (if (eq (elmo-folder-type-internal folder) 'pop3)
853 (unless (elmo-pop3-get-session folder 'any-exists)
854 (wl-folder-check-one-entity (elmo-folder-name-internal folder)
856 (wl-folder-check-one-entity (elmo-folder-name-internal folder)
859 (defun wl-biff-check-folder-async-callback (diff data)
861 (with-current-buffer (nth 1 data)
862 (wl-folder-entity-hashtb-set wl-folder-entity-hashtb
865 (- (nth 1 diff) (nth 0 diff))
868 (setq wl-folder-info-alist-modified t)
869 (setq wl-biff-check-folders-running nil)
871 (wl-biff-notify (car diff) (nth 2 data)))
873 (defun wl-biff-check-folder-async (folder notify-minibuf)
874 (when (elmo-folder-plugged-p folder)
875 (elmo-folder-set-biff-internal folder t)
876 (if (and (eq (elmo-folder-type-internal folder) 'imap4)
877 (elmo-folder-use-flag-p folder))
878 ;; Check asynchronously only when IMAP4 and use server diff.
880 (setq elmo-folder-diff-async-callback
881 'wl-biff-check-folder-async-callback)
882 (setq elmo-folder-diff-async-callback-data
883 (list (elmo-folder-name-internal folder)
884 (get-buffer wl-folder-buffer-name)
886 (elmo-folder-diff-async folder))
888 (wl-biff-notify (car (wl-biff-check-folder folder))
890 (setq wl-biff-check-folders-running nil)))))
892 (if (and (fboundp 'regexp-opt)
893 (not (featurep 'xemacs)))
894 (defalias 'wl-regexp-opt 'regexp-opt)
895 (defun wl-regexp-opt (strings &optional paren)
896 "Return a regexp to match a string in STRINGS.
897 Each string should be unique in STRINGS and should not contain any regexps,
898 quoted or not. If optional PAREN is non-nil, ensure that the returned regexp
899 is enclosed by at least one regexp grouping construct."
900 (let ((open-paren (if paren "\\(" "")) (close-paren (if paren "\\)" "")))
901 (concat open-paren (mapconcat 'regexp-quote strings "\\|")
904 (defalias 'wl-expand-newtext 'elmo-expand-newtext)
906 (defun wl-region-exists-p ()
907 "Return non-nil if a region exists on current buffer."
908 (static-if (featurep 'xemacs)
909 (and zmacs-regions zmacs-region-active-p)
910 (and transient-mark-mode mark-active)))
912 (defvar wl-line-string)
913 (defun wl-line-parse-format (format spec-alist)
914 "Make a formatter from FORMAT and SPEC-ALIST."
915 (let (f spec specs stack)
919 (goto-char (point-min))
920 (while (search-forward "%" nil t)
923 (goto-char (match-end 0)))
924 ((looking-at "\\(-?\\(0?\\)[0-9]*\\)\\([^0-9]\\)")
926 ((string= (match-string 3) "(")
927 (if (zerop (length (match-string 1)))
928 (error "No number specification for %%( line format"))
930 (match-beginning 0) ; start
931 (match-end 0) ; start-content
933 (match-string 1)) ; width
937 ((string= (match-string 3) ")")
938 (let ((entry (pop stack))
942 "No matching %%( parenthesis in summary line format"))
943 (goto-char (car entry)) ; start
944 (setq form (buffer-substring (nth 1 entry) ; start-content
945 (- (match-beginning 0) 1)))
946 (delete-region (car entry) (match-end 0))
951 (list (list 'wl-set-string-width (nth 2 entry)
957 (if (setq spec (assq (string-to-char (match-string 3))
961 (unless (string= "" (match-string 1))
962 (setq spec (list 'wl-set-string-width
963 (string-to-number (match-string 1))
965 (unless (string= "" (match-string 2))
966 (string-to-char (match-string 2))))))
967 (replace-match "s" 'fixed)
968 (setq specs (append specs
971 'setq 'wl-line-string
974 (append (list 'format f) specs)))
976 (defmacro wl-line-formatter-setup (formatter format alist)
977 (` (let (byte-compile-warnings)
981 (wl-line-parse-format (, format) (, alist)))))
982 (when (get-buffer "*Compile-Log*")
983 (bury-buffer "*Compile-Log*"))
984 (when (get-buffer "*Compile-Log-Show*")
985 (bury-buffer "*Compile-Log-Show*")))))
988 (product-provide (provide 'wl-util) (require 'wl-version))
990 ;;; wl-util.el ends here