wl/wl-util.el

   1 ;;; wl-util.el --- Utility modules for Wanderlust.
   2
   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>
   6
   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
  11
  12 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
  13
  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)
  17 ;; any later version.
  18 ;;
  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.
  23 ;;
  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.
  28 ;;
  29
  30 ;;; Commentary:
  31 ;;
  32
  33 ;;; Code:
  34 ;;
  35 (require 'bytecomp)
  36 (require 'elmo-util)
  37 (require 'elmo-flag)
  38 (require 'wl-vars)
  39 (eval-when-compile (require 'elmo-pop3))
  40 (eval-when-compile (require 'cl))
  41 (eval-when-compile (require 'static))
  42
  43 (condition-case nil (require 'pp) (error nil))
  44
  45 (eval-when-compile
  46   (require 'time-stamp)
  47   (defalias-maybe 'next-command-event 'ignore)
  48   (defalias-maybe 'event-to-character 'ignore)
  49   (defalias-maybe 'key-press-event-p 'ignore)
  50   (defalias-maybe 'button-press-event-p 'ignore)
  51   (defalias-maybe 'set-process-kanji-code 'ignore)
  52   (defalias-maybe 'set-process-coding-system 'ignore)
  53   (defalias-maybe 'dispatch-event 'ignore))
  54
  55 (defalias 'wl-set-work-buf 'elmo-set-work-buf)
  56 (make-obsolete 'wl-set-work-buf 'elmo-set-work-buf)
  57
  58 (defmacro wl-append (val func)
  59   (list 'if val
  60       (list 'nconc val func)
  61     (list 'setq val func)))
  62
  63 (defalias 'wl-parse 'elmo-parse)
  64 (make-obsolete 'wl-parse 'elmo-parse)
  65
  66 (defun wl-delete-duplicates (list &optional all hack-addresses)
  67   "Delete duplicate equivalent strings from the LIST.
  68 If ALL is t, then if there is more than one occurrence of a string in the LIST,
  69  then all occurrences of it are removed instead of just the subsequent ones.
  70 If HACK-ADDRESSES is t, then the strings are considered to be mail addresses,
  71  and only the address part is compared (so that \"Name <foo>\" and \"foo\"
  72  would be considered to be equivalent.)"
  73   (let ((hashtable (make-vector 29 0))
  74         (new-list nil)
  75         sym-string sym)
  76     (fillarray hashtable 0)
  77     (while list
  78       (setq sym-string
  79             (if hack-addresses
  80                 (wl-address-header-extract-address (car list))
  81               (car list))
  82             sym-string (or sym-string "-unparseable-garbage-")
  83             sym (intern sym-string hashtable))
  84       (if (boundp sym)
  85           (and all (setcar (symbol-value sym) nil))
  86         (setq new-list (cons (car list) new-list))
  87         (set sym new-list))
  88       (setq list (cdr list)))
  89     (delq nil (nreverse new-list))))
  90
  91 ;; string utils.
  92 (defalias 'wl-string-member 'elmo-string-member)
  93 (defalias 'wl-string-match-member 'elmo-string-match-member)
  94 (defalias 'wl-string-delete-match 'elmo-string-delete-match)
  95 (defalias 'wl-string-match-assoc 'elmo-string-match-assoc)
  96 (defalias 'wl-string-assoc 'elmo-string-assoc)
  97 (defalias 'wl-string-rassoc 'elmo-string-rassoc)
  98
  99 (defalias 'wl-parse-addresses 'elmo-parse-addresses)
 100
 101 (defun wl-append-element (list element)
 102   (if element
 103       (append list (list element))
 104     list))
 105
 106 (defmacro wl-push (v l)
 107   "Insert V at the head of the list stored in L."
 108   (list 'setq l (list 'cons v l)))
 109
 110 (defmacro wl-pop (l)
 111   "Remove the head of the list stored in L."
 112   (list 'car (list 'prog1 l (list 'setq l (list 'cdr l)))))
 113
 114 (defun wl-ask-folder (func mes-string)
 115   (let* (key keve
 116              (cmd (if (featurep 'xemacs)
 117                       (event-to-character last-command-event)
 118                     (string-to-char (format "%s" (this-command-keys))))))
 119     (message "%s" mes-string)
 120     (setq key (car (setq keve (wl-read-event-char))))
 121     (if (or (equal key ?\ )
 122             (and cmd
 123                  (equal key cmd)))
 124         (progn
 125           (message "")
 126           (funcall func))
 127       (wl-push (cdr keve) unread-command-events))))
 128
 129 (defun wl-require-update-all-folder-p (name)
 130   "Return non-nil if NAME is draft or queue folder."
 131   (or (string= name wl-draft-folder)
 132       (string= name wl-queue-folder)))
 133
 134 ;(defalias 'wl-make-hash 'elmo-make-hash)
 135 ;;(make-obsolete 'wl-make-hash 'elmo-make-hash)
 136
 137 ;;(defalias 'wl-get-hash-val 'elmo-get-hash-val)
 138 ;;(make-obsolete 'wl-get-hash-val 'elmo-get-hash-val)
 139
 140 ;;(defalias 'wl-set-hash-val 'elmo-set-hash-val)
 141 ;;(make-obsolete 'wl-set-hash-val 'elmo-set-hash-val)
 142
 143 (defsubst wl-set-string-width (width string &optional padding ignore-invalid)
 144   "Make a new string which have specified WIDTH and content of STRING.
 145 `wl-invalid-character-message' is used when invalid character is contained.
 146 If WIDTH is negative number, padding chars are added to the head and
 147 otherwise, padding chars are added to the tail of the string.
 148 The optional 3rd arg PADDING, if non-nil, specifies a padding character
 149 to add the result instead of white space.
 150 If optional 4th argument is non-nil, don't use `wl-invalid-character-message'
 151 even when invalid character is contained."
 152   (static-cond
 153    ((and (fboundp 'string-width) (fboundp 'truncate-string-to-width)
 154          (not (featurep 'xemacs)))
 155     (if (> (string-width string) (abs width))
 156         (setq string (truncate-string-to-width string (abs width))))
 157     (if (= (string-width string) (abs width))
 158         string
 159       (when (and (not ignore-invalid)
 160                  (< (abs width) (string-width string)))
 161         (setq string
 162               (truncate-string-to-width wl-invalid-character-message
 163                                         (abs width))))
 164       (let ((paddings (make-string
 165                        (max 0 (- (abs width) (string-width string)))
 166                        (or padding ?\ ))))
 167         (if (< width 0)
 168             (concat paddings string)
 169           (concat string paddings)))))
 170    (t
 171     (elmo-set-work-buf
 172      (set-buffer-multibyte default-enable-multibyte-characters)
 173      (insert string)
 174      (when (> (current-column) (abs width))
 175        (when (> (move-to-column (abs width)) (abs width))
 176          (condition-case nil ; ignore error
 177              (backward-char 1)
 178            (error)))
 179        (setq string (buffer-substring (point-min) (point))))
 180      (if (= (current-column) (abs width))
 181          string
 182        (let ((paddings (make-string (- (abs width) (current-column))
 183                                     (or padding ?\ ))))
 184          (if (< width 0)
 185              (concat paddings string)
 186            (concat string paddings))))))))
 187
 188 (defun wl-mode-line-buffer-identification (&optional id)
 189   (let ((priorities '(biff plug title)))
 190     (let ((items (reverse wl-mode-line-display-priority-list))
 191           item)
 192       (while items
 193         (setq item (car items)
 194               items (cdr items))
 195         (unless (memq item '(biff plug))
 196           (setq item 'title))
 197         (setq priorities (cons item (delq item priorities)))))
 198     (let (priority result)
 199       (while priorities
 200         (setq priority (car priorities)
 201               priorities (cdr priorities))
 202         (cond
 203          ((eq 'biff priority)
 204           (when wl-biff-check-folder-list
 205             (setq result (append result '((wl-modeline-biff-status
 206                                            wl-modeline-biff-state-on
 207                                            wl-modeline-biff-state-off))))))
 208          ((eq 'plug priority)
 209           (when wl-show-plug-status-on-modeline
 210             (setq result (append result '((wl-modeline-plug-status
 211                                            wl-modeline-plug-state-on
 212                                            wl-modeline-plug-state-off))))))
 213          (t
 214           (setq result (append result (or id '("Wanderlust: %12b")))))))
 215       (prog1
 216           (setq mode-line-buffer-identification (if (stringp (car result))
 217                                                     result
 218                                                   (cons "" result)))
 219         (force-mode-line-update t)))))
 220
 221 (defalias 'wl-display-error 'elmo-display-error)
 222 (make-obsolete 'wl-display-error 'elmo-display-error)
 223
 224 (defun wl-get-assoc-list-value (assoc-list folder &optional match)
 225   (catch 'found
 226     (let ((alist assoc-list)
 227           value pair)
 228       (while alist
 229         (setq pair (car alist))
 230         (if (and (eq match 'function)
 231                  (functionp (car pair)))
 232             (when (funcall (car pair) folder)
 233               (throw 'found (cdr pair)))
 234           (if (string-match (car pair) folder)
 235               (cond ((eq match 'all)
 236                      (setq value (append value (list (cdr pair)))))
 237                     ((eq match 'all-list)
 238                      (setq value (append value (cdr pair))))
 239                     ((or (not match) (eq match 'function))
 240                      (throw 'found (cdr pair))))))
 241         (setq alist (cdr alist)))
 242       value)))
 243
 244 (defmacro wl-match-string (pos string)
 245   "Substring POSth matched STRING."
 246   `(substring ,string (match-beginning ,pos) (match-end ,pos)))
 247
 248 (defmacro wl-match-buffer (pos)
 249   "Substring POSth matched from the current buffer."
 250   `(buffer-substring-no-properties
 251     (match-beginning ,pos) (match-end ,pos)))
 252
 253 (put 'wl-as-coding-system 'lisp-indent-function 1)
 254 (put 'wl-as-mime-charset 'lisp-indent-function 1)
 255
 256 (eval-and-compile
 257   (cond
 258    (wl-on-mule3
 259     (defmacro wl-as-coding-system (coding-system &rest body)
 260       `(let ((coding-system-for-read ,coding-system)
 261              (coding-system-for-write ,coding-system))
 262          ,@body)))
 263    (wl-on-mule
 264     (defmacro wl-as-coding-system (coding-system &rest body)
 265       `(let ((file-coding-system-for-read ,coding-system)
 266              (file-coding-system ,coding-system))
 267          ,@body)))
 268    (t
 269     (defmacro wl-as-coding-system (coding-system &rest body)
 270       `(progn ,@body)))))
 271
 272 (defmacro wl-as-mime-charset (mime-charset &rest body)
 273   `(wl-as-coding-system (mime-charset-to-coding-system ,mime-charset)
 274      ,@body))
 275
 276 (defalias 'wl-string 'elmo-string)
 277 (make-obsolete 'wl-string 'elmo-string)
 278
 279 (if (not (fboundp 'overlays-in))
 280     (defun overlays-in (beg end)
 281       "Return a list of the overlays that overlap the region BEG ... END.
 282 Overlap means that at least one character is contained within the overlay
 283 and also contained within the specified region.
 284 Empty overlays are included in the result if they are located at BEG
 285 or between BEG and END."
 286       (let ((ovls (overlay-lists))
 287             tmp retval)
 288         (if (< end beg)
 289             (setq tmp end
 290                   end beg
 291                   beg tmp))
 292         (setq ovls (nconc (car ovls) (cdr ovls)))
 293         (while ovls
 294           (setq tmp (car ovls)
 295                 ovls (cdr ovls))
 296           (if (or (and (<= (overlay-start tmp) end)
 297                        (>= (overlay-start tmp) beg))
 298                   (and (<= (overlay-end tmp) end)
 299                        (>= (overlay-end tmp) beg)))
 300               (setq retval (cons tmp retval))))
 301         retval)))
 302
 303 (defsubst wl-repeat-string (str times)
 304   (let ((loop times)
 305         ret-val)
 306     (while (> loop 0)
 307       (setq ret-val (concat ret-val str))
 308       (setq loop (- loop 1)))
 309     ret-val))
 310
 311 (defun wl-append-assoc-list (item value alist)
 312   "make assoc list '((item1 value1-1 value1-2 ...)) (item2 value2-1 ...)))"
 313   (let ((entry (assoc item alist)))
 314     (if entry
 315         (progn
 316           (when (not (member value (cdr entry)))
 317             (nconc entry (list value)))
 318           alist)
 319       (append alist
 320               (list (list item value))))))
 321
 322 (defun wl-delete-alist (key alist)
 323   "Delete by side effect any entries specified with KEY from ALIST.
 324 Return the modified ALIST.  Key comparison is done with `assq'.
 325 Write `(setq foo (wl-delete-alist key foo))' to be sure of changing
 326 the value of `foo'."
 327   (let (entry)
 328     (while (setq entry (assq key alist))
 329       (setq alist (delq entry alist)))
 330     alist))
 331
 332 (defun wl-delete-associations (keys alist)
 333   "Delete by side effect any entries specified with KEYS from ALIST.
 334 Return the modified ALIST.  KEYS must be a list of keys for ALIST.
 335 Deletion is done with `wl-delete-alist'.
 336 Write `(setq foo (wl-delete-associations keys foo))' to be sure of
 337 changing the value of `foo'."
 338   (while keys
 339     (setq alist (wl-delete-alist (car keys) alist))
 340     (setq keys (cdr keys)))
 341   alist)
 342
 343 (defun wl-filter-associations (keys alist)
 344   (let (entry result)
 345     (while keys
 346       (when (setq entry (assq (car keys) alist))
 347         (setq result (cons entry result)))
 348       (setq keys (cdr keys)))
 349     result))
 350
 351 (defun wl-inverse-alist (keys alist)
 352   "Inverse ALIST, copying.
 353 Return an association list represents the inverse mapping of ALIST,
 354 from objects to KEYS.
 355 The objects mapped (cdrs of elements of the ALIST) are shared."
 356   (let (x y tmp result)
 357     (while keys
 358       (setq x (car keys))
 359       (setq y (cdr (assq x alist)))
 360       (if y
 361           (if (setq tmp (assoc y result))
 362               (setq result (cons (append tmp (list x))
 363                                  (delete tmp result)))
 364             (setq result (cons (list y x) result))))
 365       (setq keys (cdr keys)))
 366     result))
 367
 368 (static-unless (fboundp 'pp)
 369   (defvar pp-escape-newlines t)
 370   (defun pp (object &optional stream)
 371     "Output the pretty-printed representation of OBJECT, any Lisp object.
 372 Quoting characters are printed when needed to make output that `read'
 373 can handle, whenever this is possible.
 374 Output stream is STREAM, or value of `standard-output' (which see)."
 375     (princ (pp-to-string object) (or stream standard-output)))
 376
 377   (defun pp-to-string (object)
 378     "Return a string containing the pretty-printed representation of OBJECT,
 379 any Lisp object.  Quoting characters are used when needed to make output
 380 that `read' can handle, whenever this is possible."
 381     (save-excursion
 382       (set-buffer (generate-new-buffer " pp-to-string"))
 383       (unwind-protect
 384           (progn
 385             (lisp-mode-variables t)
 386             (let ((print-escape-newlines pp-escape-newlines))
 387               (prin1 object (current-buffer)))
 388             (goto-char (point-min))
 389             (while (not (eobp))
 390               (cond
 391                ((looking-at "\\s(\\|#\\s(")
 392                 (while (looking-at "\\s(\\|#\\s(")
 393                   (forward-char 1)))
 394                ((and (looking-at "\\(quote[ \t]+\\)\\([^.)]\\)")
 395                      (> (match-beginning 1) 1)
 396                      (= ?\( (char-after (1- (match-beginning 1))))
 397                      ;; Make sure this is a two-element list.
 398                      (save-excursion
 399                        (goto-char (match-beginning 2))
 400                        (forward-sexp)
 401                        ;; Avoid mucking with match-data; does this test work?
 402                        (char-equal ?\) (char-after (point)))))
 403                 ;; -1 gets the paren preceding the quote as well.
 404                 (delete-region (1- (match-beginning 1)) (match-end 1))
 405                 (insert "'")
 406                 (forward-sexp 1)
 407                 (if (looking-at "[ \t]*\)")
 408                     (delete-region (match-beginning 0) (match-end 0))
 409                   (error "Malformed quote"))
 410                 (backward-sexp 1))
 411                ((condition-case err-var
 412                     (prog1 t (down-list 1))
 413                   (error nil))
 414                 (backward-char 1)
 415                 (skip-chars-backward " \t")
 416                 (delete-region
 417                  (point)
 418                  (progn (skip-chars-forward " \t") (point)))
 419                 (if (not (char-equal ?' (char-after (1- (point)))))
 420                     (insert ?\n)))
 421                ((condition-case err-var
 422                     (prog1 t (up-list 1))
 423                   (error nil))
 424                 (while (looking-at "\\s)")
 425                   (forward-char 1))
 426                 (skip-chars-backward " \t")
 427                 (delete-region
 428                  (point)
 429                  (progn (skip-chars-forward " \t") (point)))
 430                 (if (not (char-equal ?' (char-after (1- (point)))))
 431                     (insert ?\n)))
 432                (t (goto-char (point-max)))))
 433             (goto-char (point-min))
 434             (indent-sexp)
 435             (buffer-string))
 436         (kill-buffer (current-buffer))))))
 437
 438 (defsubst wl-get-date-iso8601 (date)
 439   (or (get-text-property 0 'wl-date date)
 440       (let* ((d1 (timezone-fix-time date nil nil))
 441              (time (format "%04d%02d%02dT%02d%02d%02d"
 442                            (aref d1 0) (aref d1 1) (aref d1 2)
 443                            (aref d1 3) (aref d1 4) (aref d1 5))))
 444         (put-text-property 0 1 'wl-date time date)
 445         time)))
 446
 447 (defun wl-make-date-string ()
 448   (let ((s (current-time-string)))
 449     (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]"
 450                   s)
 451     (concat (wl-match-string 1 s) ", "
 452             (timezone-make-date-arpa-standard s (current-time-zone)))))
 453
 454 (defun wl-date-iso8601 (date)
 455   "Convert the DATE to YYMMDDTHHMMSS."
 456   (condition-case ()
 457       (wl-get-date-iso8601 date)
 458     (error "")))
 459
 460 (defun wl-url-news (url &rest args)
 461   (interactive "sURL: ")
 462   (if (string-match "^news:\\(.*\\)$" url)
 463       (wl-summary-goto-folder-subr
 464        (concat "-" (elmo-match-string 1 url)) nil nil nil t)
 465     (message "Not a news: url.")))
 466
 467 (defun wl-url-nntp (url &rest args)
 468   (interactive "sURL: ")
 469   (let (folder fld-name server port msg)
 470     (if (string-match
 471          "^nntp://\\([^:/]*\\):?\\([0-9]*\\)/\\([^/]*\\)/\\([0-9]*\\).*$" url)
 472         (progn
 473           (if (eq (length (setq fld-name
 474                                 (elmo-match-string 3 url))) 0)
 475               (setq fld-name nil))
 476           (if (eq (length (setq port
 477                                 (elmo-match-string 2 url))) 0)
 478               (setq port (int-to-string elmo-nntp-default-port)))
 479           (if (eq (length (setq server
 480                                 (elmo-match-string 1 url))) 0)
 481               (setq server elmo-nntp-default-server))
 482           (setq folder (concat "-" fld-name "@" server ":" port))
 483           (if (eq (length (setq msg
 484                                 (elmo-match-string 4 url))) 0)
 485               (wl-summary-goto-folder-subr
 486                folder nil nil nil t)
 487             (wl-summary-goto-folder-subr
 488              folder 'update nil nil t)
 489             (wl-summary-jump-to-msg (string-to-number msg))
 490             (wl-summary-redisplay)))
 491       (message "Not a nntp: url."))))
 492
 493 (defmacro wl-concat-list (list separator)
 494   `(mapconcat 'identity (delete "" (delq nil ,list)) ,separator))
 495
 496 (defun wl-current-message-buffer ()
 497   (when (buffer-live-p wl-current-summary-buffer)
 498     (with-current-buffer wl-current-summary-buffer
 499       (or wl-message-buffer
 500           (and (wl-summary-message-number)
 501                (wl-message-buffer-display
 502                 wl-summary-buffer-elmo-folder
 503                 (wl-summary-message-number)
 504                 wl-summary-buffer-display-mime-mode
 505                 nil nil))))))
 506
 507 (defmacro wl-kill-buffers (regexp)
 508   `(mapcar (function
 509             (lambda (x)
 510               (if (and (buffer-name x)
 511                        (string-match ,regexp (buffer-name x)))
 512                   (and (get-buffer x)
 513                        (kill-buffer x)))))
 514            (buffer-list)))
 515
 516 (defun wl-collect-summary ()
 517   (let (result)
 518     (mapcar
 519      (function (lambda (x)
 520                  (if (and (string-match "^Summary"
 521                                         (buffer-name x))
 522                           (save-excursion
 523                             (set-buffer x)
 524                             (equal major-mode 'wl-summary-mode)))
 525                      (setq result (nconc result (list x))))))
 526      (buffer-list))
 527     result))
 528
 529 (defun wl-collect-draft ()
 530   (let ((draft-regexp (concat "^" (regexp-quote wl-draft-folder)))
 531         result)
 532     (dolist (buffer (buffer-list))
 533       (when (with-current-buffer buffer
 534               (and (eq major-mode 'wl-draft-mode)
 535                    (buffer-name)
 536                    (string-match draft-regexp (buffer-name))))
 537         (setq result (cons buffer result))))
 538     (nreverse result)))
 539
 540 (defvar wl-inhibit-save-drafts nil)
 541 (defvar wl-disable-auto-save nil)
 542 (make-variable-buffer-local 'wl-disable-auto-save)
 543
 544 (defun wl-save-drafts ()
 545   "Save all drafts. Return nil if there is no draft buffer."
 546   (if wl-inhibit-save-drafts
 547       'inhibited
 548     (let ((wl-inhibit-save-drafts t)
 549           (msg (current-message))
 550           (buffers (wl-collect-draft)))
 551       (save-excursion
 552         (dolist (buffer buffers)
 553           (set-buffer buffer)
 554           (when (and (not wl-disable-auto-save)
 555                      (buffer-modified-p))
 556             (wl-draft-save))))
 557       (message "%s" (or msg ""))
 558       buffers)))
 559
 560 (static-if (fboundp 'read-directory-name)
 561     (defun wl-read-directory-name (prompt dir)
 562       (read-directory-name prompt dir dir))
 563   (defun wl-read-directory-name (prompt dir)
 564     (let ((dir (read-file-name prompt dir)))
 565       (unless (file-directory-p dir)
 566         (error "%s is not directory" dir))
 567       dir)))
 568
 569 ;; local variable check.
 570 (static-if (fboundp 'local-variable-p)
 571     (defalias 'wl-local-variable-p 'local-variable-p)
 572   (defmacro wl-local-variable-p (symbol &optional buffer)
 573     `(if (assq ,symbol (buffer-local-variables ,buffer))
 574          t)))
 575
 576 (defun wl-number-base36 (num len)
 577   (if (if (< len 0)
 578           (<= num 0)
 579         (= len 0))
 580       ""
 581     (concat (wl-number-base36 (/ num 36) (1- len))
 582             (char-to-string (aref "zyxwvutsrqponmlkjihgfedcba9876543210"
 583                                   (% num 36))))))
 584
 585 (defvar wl-unique-id-char nil)
 586
 587 (defun wl-unique-id ()
 588   ;; Don't use microseconds from (current-time), they may be unsupported.
 589   ;; Instead we use this randomly inited counter.
 590   (setq wl-unique-id-char
 591         (% (1+ (or wl-unique-id-char (logand (random t) (1- (lsh 1 20)))))
 592            ;; (current-time) returns 16-bit ints,
 593            ;; and 2^16*25 just fits into 4 digits i base 36.
 594            (* 25 25)))
 595   (let ((tm (static-if (fboundp 'current-time)
 596                 (current-time)
 597               (let* ((cts (split-string (current-time-string) "[ :]"))
 598                      (m (cdr (assoc (nth 1 cts)
 599                                     '(("Jan" . "01") ("Feb" . "02")
 600                                       ("Mar" . "03") ("Apr" . "04")
 601                                       ("May" . "05") ("Jun" . "06")
 602                                       ("Jul" . "07") ("Aug" . "08")
 603                                       ("Sep" . "09") ("Oct" . "10")
 604                                       ("Nov" . "11") ("Dec" . "12"))))))
 605                 (list (string-to-number (concat (nth 6 cts) m
 606                                                 (substring (nth 2 cts) 0 1)))
 607                       (string-to-number (concat (substring (nth 2 cts) 1)
 608                                                 (nth 4 cts) (nth 5 cts)
 609                                                 (nth 6 cts))))))))
 610     (concat
 611      (if (memq system-type '(ms-dos emx vax-vms))
 612          (let ((user (downcase (user-login-name))))
 613            (while (string-match "[^a-z0-9_]" user)
 614              (aset user (match-beginning 0) ?_))
 615            user)
 616        (wl-number-base36 (user-uid) -1))
 617      (wl-number-base36 (+ (car   tm)
 618                           (lsh (% wl-unique-id-char 25) 16)) 4)
 619      (wl-number-base36 (+ (nth 1 tm)
 620                           (lsh (/ wl-unique-id-char 25) 16)) 4)
 621      ;; Append the name of the message interface, because while the
 622      ;; generated ID is unique to this newsreader, other newsreaders
 623      ;; might otherwise generate the same ID via another algorithm.
 624      wl-unique-id-suffix)))
 625
 626 (defvar wl-message-id-function 'wl-draft-make-message-id-string)
 627 (defun wl-draft-make-message-id-string ()
 628   "Return Message-ID field value."
 629   (concat "<" (wl-unique-id)
 630           (let (from user domain)
 631             (if (and wl-message-id-use-wl-from
 632                      (progn
 633                        (setq from (wl-address-header-extract-address wl-from))
 634                        (and (string-match "^\\(.*\\)@\\(.*\\)$" from)
 635                             (setq user   (match-string 1 from))
 636                             (setq domain (match-string 2 from)))))
 637                 (format "%%%s@%s>" user domain)
 638               (format "@%s>"
 639                       (or wl-message-id-domain
 640                           (if wl-local-domain
 641                               (concat (system-name) "." wl-local-domain)
 642                             (system-name))))))))
 643
 644 ;;; Profile loading.
 645 (defvar wl-load-profile-function 'wl-local-load-profile)
 646 (defun wl-local-load-profile ()
 647   "Load `wl-init-file'."
 648   (message "Initializing...")
 649   (load wl-init-file 'noerror 'nomessage))
 650
 651 (defun wl-load-profile ()
 652   "Call `wl-load-profile-function' function."
 653   (funcall wl-load-profile-function))
 654
 655 ;;;
 656
 657 (defmacro wl-count-lines ()
 658   '(save-excursion
 659      (beginning-of-line)
 660      (count-lines 1 (point))))
 661
 662 (defun wl-horizontal-recenter ()
 663   "Recenter the current buffer horizontally."
 664   (beginning-of-line)
 665   (re-search-forward "[[<]" (point-at-eol) t)
 666   (if (< (current-column) (/ (window-width) 2))
 667       (set-window-hscroll (get-buffer-window (current-buffer) t) 0)
 668     (let* ((orig (point))
 669            (end (window-end (get-buffer-window (current-buffer) t)))
 670            (max 0))
 671       (when end
 672         ;; Find the longest line currently displayed in the window.
 673         (goto-char (window-start))
 674         (while (and (not (eobp))
 675                     (< (point) end))
 676           (end-of-line)
 677           (setq max (max max (current-column)))
 678           (forward-line 1))
 679         (goto-char orig)
 680         ;; Scroll horizontally to center (sort of) the point.
 681         (if (> max (window-width))
 682             (set-window-hscroll
 683              (get-buffer-window (current-buffer) t)
 684              (min (- (current-column) (/ (window-width) 3))
 685                   (+ 2 (- max (window-width)))))
 686           (set-window-hscroll (get-buffer-window (current-buffer) t) 0))
 687         max))))
 688
 689 ;; Draft auto-save
 690 (defun wl-auto-save-drafts ()
 691   (unless (wl-save-drafts)
 692     (wl-stop-save-drafts)))
 693
 694 (static-cond
 695  (wl-on-xemacs
 696   (defvar wl-save-drafts-timer-name "wl-save-drafts")
 697
 698   (defun wl-start-save-drafts ()
 699     (when (numberp wl-auto-save-drafts-interval)
 700       (unless (get-itimer wl-save-drafts-timer-name)
 701         (start-itimer wl-save-drafts-timer-name
 702                       'wl-auto-save-drafts
 703                       wl-auto-save-drafts-interval
 704                       wl-auto-save-drafts-interval
 705                       t))))
 706
 707   (defun wl-stop-save-drafts ()
 708     (when (get-itimer wl-save-drafts-timer-name)
 709       (delete-itimer wl-save-drafts-timer-name))))
 710  (t
 711   (defun wl-start-save-drafts ()
 712     (when (numberp wl-auto-save-drafts-interval)
 713       (require 'timer)
 714       (if (get 'wl-save-drafts 'timer)
 715           (progn
 716             (timer-set-idle-time (get 'wl-save-drafts 'timer)
 717                                  wl-auto-save-drafts-interval t)
 718             (timer-activate-when-idle (get 'wl-save-drafts 'timer)))
 719         (put 'wl-save-drafts 'timer
 720              (run-with-idle-timer
 721               wl-auto-save-drafts-interval t 'wl-auto-save-drafts)))))
 722
 723   (defun wl-stop-save-drafts ()
 724     (when (get 'wl-save-drafts 'timer)
 725       (cancel-timer (get 'wl-save-drafts 'timer))))))
 726
 727 (defun wl-set-auto-save-draft (&optional arg)
 728   (interactive "P")
 729   (unless (setq wl-disable-auto-save
 730                 (cond
 731                  ((null arg) (not wl-disable-auto-save))
 732                  ((< (prefix-numeric-value arg) 0) t)
 733                  (t nil)))
 734     (wl-start-save-drafts))
 735   (when (interactive-p)
 736     (message "Auto save is %s (in this buffer)"
 737              (if wl-disable-auto-save "disabled" "enabled"))))
 738
 739 ;; Biff
 740 (static-cond
 741  (wl-on-xemacs
 742   (defvar wl-biff-timer-name "wl-biff")
 743
 744   (defun wl-biff-stop ()
 745     (when (get-itimer wl-biff-timer-name)
 746       (delete-itimer wl-biff-timer-name)))
 747
 748   (defun wl-biff-start ()
 749     (wl-biff-stop)
 750     (when wl-biff-check-folder-list
 751       (start-itimer wl-biff-timer-name 'wl-biff-check-folders
 752                     wl-biff-check-interval wl-biff-check-interval
 753                     wl-biff-use-idle-timer))))
 754
 755  (t
 756   (defun wl-biff-stop ()
 757     (when (get 'wl-biff 'timer)
 758       (cancel-timer (get 'wl-biff 'timer))))
 759
 760   (defun wl-biff-start ()
 761     (require 'timer)
 762     (when wl-biff-check-folder-list
 763       (if wl-biff-use-idle-timer
 764           (if (get 'wl-biff 'timer)
 765               (progn (timer-set-idle-time (get 'wl-biff 'timer)
 766                                           wl-biff-check-interval t)
 767                      (timer-activate-when-idle (get 'wl-biff 'timer)))
 768             (put 'wl-biff 'timer
 769                  (run-with-idle-timer
 770                   wl-biff-check-interval t 'wl-biff-event-handler)))
 771         (if (get 'wl-biff 'timer)
 772             (progn
 773               (timer-set-time (get 'wl-biff 'timer)
 774                               (timer-next-integral-multiple-of-time
 775                                (current-time) wl-biff-check-interval)
 776                               wl-biff-check-interval)
 777               (timer-activate (get 'wl-biff 'timer)))
 778           (put 'wl-biff 'timer
 779                (run-at-time
 780                 (timer-next-integral-multiple-of-time
 781                  (current-time) wl-biff-check-interval)
 782                 wl-biff-check-interval
 783                 'wl-biff-event-handler))))))
 784
 785   (defun-maybe timer-next-integral-multiple-of-time (time secs)
 786     "Yield the next value after TIME that is an integral multiple of SECS.
 787 More precisely, the next value, after TIME, that is an integral multiple
 788 of SECS seconds since the epoch.  SECS may be a fraction.
 789 This function is imported from Emacs 20.7."
 790     (let ((time-base (ash 1 16)))
 791       (if (fboundp 'atan)
 792           ;; Use floating point, taking care to not lose precision.
 793           (let* ((float-time-base (float time-base))
 794                  (million 1000000.0)
 795                  (time-usec (+ (* million
 796                                   (+ (* float-time-base (nth 0 time))
 797                                      (nth 1 time)))
 798                                (nth 2 time)))
 799                  (secs-usec (* million secs))
 800                  (mod-usec (mod time-usec secs-usec))
 801                  (next-usec (+ (- time-usec mod-usec) secs-usec))
 802                  (time-base-million (* float-time-base million)))
 803             (list (floor next-usec time-base-million)
 804                   (floor (mod next-usec time-base-million) million)
 805                   (floor (mod next-usec million))))
 806         ;; Floating point is not supported.
 807         ;; Use integer arithmetic, avoiding overflow if possible.
 808         (let* ((mod-sec (mod (+ (* (mod time-base secs)
 809                                    (mod (nth 0 time) secs))
 810                                 (nth 1 time))
 811                              secs))
 812                (next-1-sec (+ (- (nth 1 time) mod-sec) secs)))
 813           (list (+ (nth 0 time) (floor next-1-sec time-base))
 814                 (mod next-1-sec time-base)
 815                 0)))))
 816
 817   (defun wl-biff-event-handler ()
 818     ;; PAKURing from FSF:time.el
 819     (wl-biff-check-folders)
 820     ;; Do redisplay right now, if no input pending.
 821     (sit-for 0)
 822     (let* ((current (current-time))
 823            (timer (get 'wl-biff 'timer))
 824            ;; Compute the time when this timer will run again, next.
 825            (next-time (timer-relative-time
 826                        (list (aref timer 1) (aref timer 2) (aref timer 3))
 827                        (* 5 (aref timer 4)) 0)))
 828       ;; If the activation time is far in the past,
 829       ;; skip executions until we reach a time in the future.
 830       ;; This avoids a long pause if Emacs has been suspended for hours.
 831       (or (> (nth 0 next-time) (nth 0 current))
 832           (and (= (nth 0 next-time) (nth 0 current))
 833                (> (nth 1 next-time) (nth 1 current)))
 834           (and (= (nth 0 next-time) (nth 0 current))
 835                (= (nth 1 next-time) (nth 1 current))
 836                (> (nth 2 next-time) (nth 2 current)))
 837           (progn
 838             (timer-set-time timer (timer-next-integral-multiple-of-time
 839                                    current wl-biff-check-interval)
 840                             wl-biff-check-interval)
 841             (timer-activate timer)))))))
 842
 843 (defsubst wl-biff-notify (new-mails notify-minibuf)
 844   (when (and (not wl-modeline-biff-status) (> new-mails 0))
 845     (run-hooks 'wl-biff-notify-hook))
 846   (when (and wl-modeline-biff-status (eq new-mails 0))
 847     (run-hooks 'wl-biff-unnotify-hook))
 848   (setq wl-modeline-biff-status (> new-mails 0))
 849   (force-mode-line-update t)
 850   (when notify-minibuf
 851     (cond ((zerop new-mails) (message "No mail."))
 852           ((= 1 new-mails) (message "You have a new mail."))
 853           (t (message "You have %d new mails." new-mails)))))
 854
 855 ;; Internal variable.
 856 (defvar wl-biff-check-folders-running nil)
 857
 858 (defun wl-biff-check-folders ()
 859   (interactive)
 860   (if wl-biff-check-folders-running
 861       (when (interactive-p)
 862         (message "Biff process is running."))
 863     (setq wl-biff-check-folders-running t)
 864     (when (interactive-p)
 865       (message "Checking new mails..."))
 866     (let ((new-mails 0)
 867           (flist (or wl-biff-check-folder-list (list wl-default-folder)))
 868           folder)
 869       (if (eq (length flist) 1)
 870           (wl-biff-check-folder-async (wl-folder-get-elmo-folder
 871                                        (car flist) 'biff) (interactive-p))
 872         (unwind-protect
 873             (while flist
 874               (setq folder (wl-folder-get-elmo-folder (car flist))
 875                     flist (cdr flist))
 876               (elmo-folder-set-biff-internal folder t)
 877               (when (and (elmo-folder-plugged-p folder)
 878                          (elmo-folder-exists-p folder))
 879                 (setq new-mails
 880                       (+ new-mails
 881                          (nth 0 (wl-biff-check-folder folder))))))
 882           (setq wl-biff-check-folders-running nil)
 883           (wl-biff-notify new-mails (interactive-p)))))))
 884
 885 (defun wl-biff-check-folder (folder)
 886   (if (eq (elmo-folder-type-internal folder) 'pop3)
 887       (unless (elmo-pop3-get-session folder 'any-exists)
 888         (wl-folder-check-one-entity (elmo-folder-name-internal folder)
 889                                     'biff))
 890     (wl-folder-check-one-entity (elmo-folder-name-internal folder)
 891                                 'biff)))
 892
 893 (defun wl-biff-check-folder-async-callback (diff data)
 894   (if (nth 1 data)
 895       (with-current-buffer (nth 1 data)
 896         (wl-folder-entity-hashtb-set wl-folder-entity-hashtb
 897                                      (nth 0 data)
 898                                      (list (nth 0 diff)
 899                                            (- (nth 1 diff) (nth 0 diff))
 900                                            (nth 2 diff))
 901                                      (current-buffer))))
 902   (setq wl-folder-info-alist-modified t)
 903   (setq wl-biff-check-folders-running nil)
 904   (sit-for 0)
 905   (wl-biff-notify (car diff) (nth 2 data)))
 906
 907 (defun wl-biff-check-folder-async (folder notify-minibuf)
 908   (if (and (elmo-folder-plugged-p folder)
 909            (wl-folder-entity-exists-p (elmo-folder-name-internal folder)))
 910       (progn
 911         (elmo-folder-set-biff-internal folder t)
 912         (if (and (eq (elmo-folder-type-internal folder) 'imap4)
 913                  (elmo-folder-use-flag-p folder))
 914             ;; Check asynchronously only when IMAP4 and use server diff.
 915             (progn
 916               (setq elmo-folder-diff-async-callback
 917                     'wl-biff-check-folder-async-callback)
 918               (setq elmo-folder-diff-async-callback-data
 919                     (list (elmo-folder-name-internal folder)
 920                           (get-buffer wl-folder-buffer-name)
 921                           notify-minibuf))
 922               (elmo-folder-diff-async folder))
 923           (unwind-protect
 924               (wl-biff-notify (car (wl-biff-check-folder folder))
 925                               notify-minibuf)
 926             (setq wl-biff-check-folders-running nil))))
 927     (setq wl-biff-check-folders-running nil)))
 928
 929 (if (and (fboundp 'regexp-opt)
 930          (not (featurep 'xemacs)))
 931     (defalias 'wl-regexp-opt 'regexp-opt)
 932   (defun wl-regexp-opt (strings &optional paren)
 933     "Return a regexp to match a string in STRINGS.
 934 Each string should be unique in STRINGS and should not contain any regexps,
 935 quoted or not.  If optional PAREN is non-nil, ensure that the returned regexp
 936 is enclosed by at least one regexp grouping construct."
 937     (let ((open-paren (if paren "\\(" "")) (close-paren (if paren "\\)" "")))
 938       (concat open-paren (mapconcat 'regexp-quote strings "\\|")
 939               close-paren))))
 940
 941 (defalias 'wl-expand-newtext 'elmo-expand-newtext)
 942 (defalias 'wl-regexp-opt 'elmo-regexp-opt)
 943
 944 (defun wl-region-exists-p ()
 945   "Return non-nil if a region exists on current buffer."
 946   (static-if (featurep 'xemacs)
 947       (region-active-p)
 948     (and transient-mark-mode mark-active)))
 949
 950 (defun wl-deactivate-region ()
 951   "Deactivate region on current buffer"
 952   (static-if (not (featurep 'xemacs))
 953       (setq mark-active nil)))
 954
 955 (defvar wl-line-string)
 956 (defun wl-line-parse-format (format spec-alist)
 957   "Make a formatter from FORMAT and SPEC-ALIST."
 958   (let (f spec specs stack)
 959     (setq f
 960           (with-temp-buffer
 961             (insert format)
 962             (goto-char (point-min))
 963             (while (search-forward "%" nil t)
 964               (cond
 965                ((looking-at "%")
 966                 (goto-char (match-end 0)))
 967                ((looking-at "\\(-?\\(0?\\)[0-9]*\\)\\([^0-9]\\)")
 968                 (cond
 969                  ((string= (match-string 3) "(")
 970                   (if (zerop (length (match-string 1)))
 971                       (error "No number specification for %%( line format"))
 972                   (push (list
 973                          (match-beginning 0) ; start
 974                          (match-end 0)       ; start-content
 975                          (string-to-number
 976                           (match-string 1))  ; width
 977                          specs) ; specs
 978                         stack)
 979                   (setq specs nil))
 980                  ((string= (match-string 3) ")")
 981                   (let ((entry (pop stack))
 982                         form)
 983                     (unless entry
 984                       (error
 985                        "No matching %%( parenthesis in summary line format"))
 986                     (goto-char (car entry)) ; start
 987                     (setq form (buffer-substring (nth 1 entry) ; start-content
 988                                                  (- (match-beginning 0) 1)))
 989                     (delete-region (car entry) (match-end 0))
 990                     (insert "s")
 991                     (setq specs
 992                           (append
 993                            (nth 3 entry)
 994                            (list (list 'wl-set-string-width (nth 2 entry)
 995                                        (append
 996                                         (list 'format form)
 997                                         specs)))))))
 998                  (t
 999                   (setq spec
1000                         (if (setq spec (assq (string-to-char (match-string 3))
1001                                              spec-alist))
1002                             (nth 1 spec)
1003                           (match-string 3)))
1004                   (unless (string= "" (match-string 1))
1005                     (setq spec (list 'wl-set-string-width
1006                                      (string-to-number (match-string 1))
1007                                      spec
1008                                      (unless (string= "" (match-string 2))
1009                                        (string-to-char (match-string 2))))))
1010                   (replace-match "s" 'fixed)
1011                   (setq specs (append specs
1012                                       (list
1013                                        (list
1014                                         'setq 'wl-line-string
1015                                         spec)))))))))
1016             (buffer-string)))
1017     (append (list 'format f) specs)))
1018
1019 (defmacro wl-line-formatter-setup (formatter format alist)
1020   `(let (byte-compile-warnings)
1021      (setq ,formatter
1022            (byte-compile
1023             (list 'lambda ()
1024                   (wl-line-parse-format ,format ,alist))))
1025      (when (get-buffer "*Compile-Log*")
1026        (bury-buffer "*Compile-Log*"))
1027      (when (get-buffer "*Compile-Log-Show*")
1028        (bury-buffer "*Compile-Log-Show*"))))
1029
1030 (defsubst wl-copy-local-variables (src dst local-variables)
1031   "Copy value of LOCAL-VARIABLES from SRC buffer to DST buffer."
1032   (with-current-buffer dst
1033     (dolist (variable local-variables)
1034       (set (make-local-variable variable)
1035            (with-current-buffer src
1036              (symbol-value variable))))))
1037
1038 ;;; Search Condition
1039 (defun wl-search-condition-fields ()
1040   (let ((denial-fields
1041          (nconc (mapcar 'capitalize elmo-msgdb-extra-fields)
1042                 (mapcar 'capitalize wl-additional-search-condition-fields)
1043                 '("Flag" "Since" "Before"
1044                   "From" "Subject" "To" "Cc" "Body" "ToCc"
1045                   "Larger" "Smaller"))))
1046     (append '("Last" "First")
1047             denial-fields
1048             (mapcar (lambda (f) (concat "!" f))
1049                     denial-fields))))
1050
1051 (defun wl-read-search-condition (default)
1052   "Read search condition string interactively."
1053   (wl-read-search-condition-internal "Search by" default))
1054
1055 (defun wl-read-search-condition-internal (prompt default &optional paren)
1056   (let* ((completion-ignore-case t)
1057          (field (completing-read
1058                  (format "%s (%s): " prompt default)
1059                  (mapcar #'list
1060                          (append '("AND" "OR") (wl-search-condition-fields)))))
1061          value)
1062     (setq field (if (string= field "")
1063                     (setq field default)
1064                   field))
1065     (cond
1066      ((or (string= field "AND") (string= field "OR"))
1067       (concat (if paren "(" "")
1068               (wl-read-search-condition-internal
1069                (concat field "(1) Search by") default 'paren)
1070               (if (string= field "AND") "&" "|")
1071               (wl-read-search-condition-internal
1072                (concat field "(2) Search by") default 'paren)
1073               (if paren ")" "")))
1074      ((string-match "Since\\|Before" field)
1075       (let ((default (format-time-string "%Y-%m-%d")))
1076         (setq value (completing-read
1077                      (format "Value for '%s' [%s]: " field default)
1078                      (mapcar (function
1079                               (lambda (x)
1080                                 (list (format "%s" (car x)))))
1081                              elmo-date-descriptions)))
1082         (concat (downcase field) ":"
1083                 (if (equal value "") default value))))
1084      ((string-match "!?Flag" field)
1085       (while (null value)
1086         (setq value (downcase
1087                      (completing-read
1088                       (format "Value for '%s': " field)
1089                       (mapcar (lambda (f) (list (capitalize (symbol-name f))))
1090                               (elmo-uniq-list
1091                                (append
1092                                 '(unread answered forwarded digest any)
1093                                 (copy-sequence elmo-global-flags))
1094                                #'delq)))))
1095         (unless (elmo-flag-valid-p value)
1096           (message "Invalid char in `%s'" value)
1097           (setq value nil)
1098           (sit-for 1)))
1099       (unless (string-match (concat "^" elmo-condition-atom-regexp "$")
1100                             value)
1101         (setq value (prin1-to-string value)))
1102       (concat (downcase field) ":" value))
1103      (t
1104       (setq value (read-from-minibuffer (format "Value for '%s': " field)))
1105       (unless (string-match (concat "^" elmo-condition-atom-regexp "$")
1106                             value)
1107         (setq value (prin1-to-string value)))
1108       (concat (downcase field) ":" value)))))
1109
1110 (defun wl-y-or-n-p-with-scroll (prompt &optional scroll-by-SPC)
1111   (let ((prompt (concat prompt (if scroll-by-SPC
1112                                    "<y/n/SPC(down)/BS(up)> "
1113                                  "<y/n/j(down)/k(up)> "))))
1114     (catch 'done
1115       (while t
1116         (discard-input)
1117         (case (let ((cursor-in-echo-area t))
1118                 (cdr (wl-read-event-char prompt)))
1119           ((?y ?Y)
1120            (throw 'done t))
1121           (?\
1122            (if scroll-by-SPC
1123                (ignore-errors (scroll-up))
1124              (throw 'done t)))
1125           ((?v ?j ?J next)
1126            (ignore-errors (scroll-up)))
1127           ((?^ ?k ?K prior backspace)
1128            (ignore-errors (scroll-down)))
1129           (t
1130            (throw 'done nil)))))))
1131
1132 (defun wl-find-region (beg-regexp end-regexp)
1133   (if (or (re-search-forward end-regexp nil t)
1134           (re-search-backward end-regexp nil t))
1135       (let ((end (match-end 0))
1136             (beg (re-search-backward beg-regexp nil t)))
1137         (if beg
1138             (cons beg end)))))
1139
1140 (defun wl-simple-display-progress (label action current total)
1141   (message "%s... %d%%"
1142            action
1143            (if (> total 0) (floor (* (/ current (float total)) 100)) 0)))
1144
1145 (when (fboundp 'progress-feedback-with-label)
1146   (defun wl-display-progress-with-gauge (label action current total)
1147     (progress-feedback-with-label
1148      label
1149      "%s..."
1150      (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
1151      action)))
1152
1153 (defun wl-progress-callback-function (label action current total)
1154   (case current
1155     (query
1156      (let ((threshold (if (consp wl-display-progress-threshold)
1157                           (cdr (or (assq label wl-display-progress-threshold)
1158                                    (assq t wl-display-progress-threshold)))
1159                         wl-display-progress-threshold)))
1160        (and threshold
1161             (>= total threshold))))
1162     (start
1163      (message "%s..." action))
1164     (done
1165      (message "%s...done" action))
1166     (t
1167      (when wl-display-progress-function
1168        (funcall wl-display-progress-function label action current total)))))
1169
1170 ;; read multiple strings with completion
1171 (defun wl-completing-read-multiple-1 (prompt
1172                                       table
1173                                       &optional predicate
1174                                       require-match initial-input
1175                                       hist def inherit-input-method)
1176     "Read multiple strings in the minibuffer"
1177     (split-string
1178      (completing-read prompt table predicate nil
1179                       initial-input hist def inherit-input-method)
1180      ","))
1181
1182 (static-when (fboundp 'completing-read-multiple)
1183   (eval-when-compile
1184     (require 'crm))
1185   (defun wl-completing-read-multiple-2 (prompt
1186                                         table
1187                                         &optional predicate
1188                                         require-match initial-input
1189                                         hist def inherit-input-method)
1190     "Read multiple strings in the minibuffer"
1191     (let ((ret (completing-read-multiple prompt table predicate
1192                                          require-match initial-input
1193                                          hist def inherit-input-method)))
1194       (if (and def (equal ret '("")))
1195           (split-string def crm-separator)
1196         ret))))
1197
1198 (static-cond
1199  ((not (fboundp 'completing-read-multiple))
1200   (defalias 'wl-completing-read-multiple 'wl-completing-read-multiple-1))
1201  ((< emacs-major-version 22)
1202   (defun wl-completing-read-multiple (prompt
1203                                       table
1204                                       &optional predicate
1205                                       require-match initial-input
1206                                       hist def inherit-input-method)
1207     "Read multiple strings in the minibuffer"
1208     (if require-match
1209         (wl-completing-read-multiple-1 prompt table predicate
1210                                        nil initial-input
1211                                        hist def inherit-input-method)
1212       (wl-completing-read-multiple-2 prompt table predicate
1213                                      nil initial-input
1214                                      hist def inherit-input-method))))
1215  (t
1216   (defalias 'wl-completing-read-multiple 'completing-read-multiple)))
1217
1218
1219 (cond
1220  ((fboundp 'shell-command-read-minibuffer)
1221   (defun wl-read-shell-command (prompt &optional
1222                                        initial-contents keymap read hist)
1223     (shell-command-read-minibuffer prompt default-directory
1224                                    initial-contents keymap read hist)))
1225  (t
1226   (defalias 'wl-read-shell-command 'read-from-minibuffer)))
1227
1228 (require 'product)
1229 (product-provide (provide 'wl-util) (require 'wl-version))
1230
1231 ;;; wl-util.el ends here