mime-view.el

   1 ;;; mime-view.el --- interactive MIME viewer for GNU Emacs
   2
   3 ;; Copyright (C) 1995,96,97,98,99,2000 Free Software Foundation, Inc.
   4
   5 ;; Author: MORIOKA Tomohiko <tomo@m17n.org>
   6 ;; Created: 1994/07/13
   7 ;;      Renamed: 1994/08/31 from tm-body.el
   8 ;;      Renamed: 1997/02/19 from tm-view.el
   9 ;; Keywords: MIME, multimedia, mail, news
  10
  11 ;; This file is part of SEMI (Sample of Elastic MIME Interfaces).
  12
  13 ;; This program is free software; you can redistribute it and/or
  14 ;; modify it under the terms of the GNU General Public License as
  15 ;; published by the Free Software Foundation; either version 2, or (at
  16 ;; your option) any later version.
  17
  18 ;; This program is distributed in the hope that it will be useful, but
  19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 ;; General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  26 ;; Boston, MA 02111-1307, USA.
  27
  28 ;;; Code:
  29
  30 (require 'mime)
  31 (require 'semi-def)
  32 (require 'calist)
  33 (require 'alist)
  34 (require 'mime-conf)
  35 (require 'mcharset)
  36
  37 (eval-when-compile (require 'static))
  38
  39
  40 ;;; @ version
  41 ;;;
  42
  43 (defconst mime-view-version
  44   (concat (mime-product-name mime-user-interface-product) " MIME-View "
  45           (mapconcat #'number-to-string
  46                      (mime-product-version mime-user-interface-product) ".")
  47           " (" (mime-product-code-name mime-user-interface-product) ")"))
  48
  49
  50 ;;; @ variables
  51 ;;;
  52
  53 (defgroup mime-view nil
  54   "MIME view mode"
  55   :group 'mime)
  56
  57 (defcustom mime-situation-examples-file "~/.mime-example"
  58   "*File name of situation-examples demonstrated by user."
  59   :group 'mime-view
  60   :type 'file)
  61
  62 (defcustom mime-preview-move-scroll nil
  63   "*Decides whether to scroll when moving to next entity.
  64 When t, scroll the buffer. Non-nil but not t means scroll when
  65 the next entity is within next-screen-context-lines from top or
  66 buttom. Nil means don't scroll at all."
  67   :group 'mime-view
  68   :type '(choice (const :tag "Off" nil)
  69                  (const :tag "On" t)
  70                  (sexp :tag "Situation" 1)))
  71
  72 (defcustom mime-view-mailcap-files
  73   (let ((files '("/etc/mailcap" "/usr/etc/mailcap" "~/.mailcap")))
  74     (or (member mime-mailcap-file files)
  75         (setq files (cons mime-mailcap-file files)))
  76     files)
  77   "List of mailcap files."
  78   :group 'mime-view
  79   :type '(repeat file))
  80
  81 (defvar mime-view-automatic-conversion 'undecided)
  82
  83
  84 ;;; @ in raw-buffer (representation space)
  85 ;;;
  86
  87 (defvar mime-preview-buffer nil
  88   "MIME-preview buffer corresponding with the (raw) buffer.")
  89 (make-variable-buffer-local 'mime-preview-buffer)
  90
  91
  92 (defvar mime-raw-representation-type-alist
  93   '((mime-show-message-mode     . binary)
  94     (mime-temp-message-mode     . binary)
  95     (t                          . cooked))
  96   "Alist of major-mode vs. representation-type of mime-raw-buffer.
  97 Each element looks like (SYMBOL . REPRESENTATION-TYPE).  SYMBOL is
  98 major-mode or t.  t means default.  REPRESENTATION-TYPE must be
  99 `binary' or `cooked'.")
 100
 101
 102 ;;; @ in preview-buffer (presentation space)
 103 ;;;
 104
 105 (defvar mime-mother-buffer nil
 106   "Mother buffer corresponding with the (MIME-preview) buffer.
 107 If current MIME-preview buffer is generated by other buffer, such as
 108 message/partial, it is called `mother-buffer'.")
 109 (make-variable-buffer-local 'mime-mother-buffer)
 110
 111 ;; (defvar mime-raw-buffer nil
 112 ;;   "Raw buffer corresponding with the (MIME-preview) buffer.")
 113 ;; (make-variable-buffer-local 'mime-raw-buffer)
 114
 115 (defvar mime-preview-original-window-configuration nil
 116   "Window-configuration before mime-view-mode is called.")
 117 (make-variable-buffer-local 'mime-preview-original-window-configuration)
 118
 119 (defun mime-preview-original-major-mode (&optional recursive point)
 120   "Return major-mode of original buffer.
 121 If optional argument RECURSIVE is non-nil and current buffer has
 122 mime-mother-buffer, it returns original major-mode of the
 123 mother-buffer."
 124   (if (and recursive mime-mother-buffer)
 125       (save-excursion
 126         (set-buffer mime-mother-buffer)
 127         (mime-preview-original-major-mode recursive))
 128     (cdr (assq 'major-mode
 129                (get-text-property (or point
 130                                       (if (> (point) (buffer-size))
 131                                           (max (1- (point-max)) (point-min))
 132                                         (point)))
 133                                   'mime-view-situation)))))
 134
 135
 136 ;;; @ entity information
 137 ;;;
 138
 139 (defun mime-entity-situation (entity &optional situation)
 140   "Return situation of ENTITY."
 141   (let (rest param name)
 142     ;; Content-Type
 143     (unless (assq 'type situation)
 144       (setq rest (or (mime-entity-content-type entity)
 145                      (make-mime-content-type 'text 'plain))
 146             situation (cons (car rest) situation)
 147             rest (cdr rest)))
 148     (unless (assq 'subtype situation)
 149       (or rest
 150           (setq rest (or (cdr (mime-entity-content-type entity))
 151                          '((subtype . plain)))))
 152       (setq situation (cons (car rest) situation)
 153             rest (cdr rest)))
 154     (while rest
 155       (setq param (car rest))
 156       (or (assoc (car param) situation)
 157           (setq situation (cons param situation)))
 158       (setq rest (cdr rest)))
 159
 160     ;; Content-Disposition
 161     (setq rest nil)
 162     (unless (assq 'disposition-type situation)
 163       (setq rest (mime-entity-content-disposition entity))
 164       (if rest
 165           (setq situation (cons (cons 'disposition-type
 166                                       (mime-content-disposition-type rest))
 167                                 situation)
 168                 rest (mime-content-disposition-parameters rest))))
 169     (while rest
 170       (setq param (car rest)
 171             name (car param))
 172       (if (cond ((string= name "filename")
 173                  (if (assq 'filename situation)
 174                      nil
 175                    (setq name 'filename)))
 176                 ((string= name "creation-date")
 177                  (if (assq 'creation-date situation)
 178                      nil
 179                    (setq name 'creation-date)))
 180                 ((string= name "modification-date")
 181                  (if (assq 'modification-date situation)
 182                      nil
 183                    (setq name 'modification-date)))
 184                 ((string= name "read-date")
 185                  (if (assq 'read-date situation)
 186                      nil
 187                    (setq name 'read-date)))
 188                 ((string= name "size")
 189                  (if (assq 'size situation)
 190                      nil
 191                    (setq name 'size)))
 192                 (t (setq name (cons 'disposition name))
 193                    (if (assoc name situation)
 194                        nil
 195                      name)))
 196           (setq situation
 197                 (cons (cons name (cdr param))
 198                       situation)))
 199       (setq rest (cdr rest)))
 200
 201     ;; Content-Transfer-Encoding
 202     (or (assq 'encoding situation)
 203         (setq situation
 204               (cons (cons 'encoding (or (mime-entity-encoding entity)
 205                                         "7bit"))
 206                     situation)))
 207
 208     situation))
 209
 210 (defsubst mime-delq-null-situation (situations field
 211                                                &rest ignored-values)
 212   (let (dest)
 213     (while situations
 214       (let* ((situation (car situations))
 215              (cell (assq field situation)))
 216         (if cell
 217             (or (memq (cdr cell) ignored-values)
 218                 (setq dest (cons situation dest)))))
 219       (setq situations (cdr situations)))
 220     dest))
 221
 222 (defun mime-compare-situation-with-example (situation example)
 223   (let ((example (copy-alist example))
 224         (match 0))
 225     (while situation
 226       (let* ((cell (car situation))
 227              (key (car cell))
 228              (ecell (assoc key example)))
 229         (when ecell
 230           (if (equal cell ecell)
 231               (setq match (1+ match))
 232             (setq example (delq ecell example)))))
 233       (setq situation (cdr situation)))
 234     (cons match example)))
 235
 236 (defun mime-sort-situation (situation)
 237   (sort situation
 238         #'(lambda (a b)
 239             (let ((a-t (car a))
 240                   (b-t (car b))
 241                   (order '((type . 1)
 242                            (subtype . 2)
 243                            (mode . 3)
 244                            (method . 4)
 245                            (major-mode . 5)
 246                            (disposition-type . 6)))
 247                   a-order b-order)
 248               (if (symbolp a-t)
 249                   (let ((ret (assq a-t order)))
 250                     (if ret
 251                         (setq a-order (cdr ret))
 252                       (setq a-order 7)))
 253                 (setq a-order 8))
 254               (if (symbolp b-t)
 255                   (let ((ret (assq b-t order)))
 256                     (if ret
 257                         (setq b-order (cdr ret))
 258                       (setq b-order 7)))
 259                 (setq b-order 8))
 260               (if (= a-order b-order)
 261                   (string< (format "%s" a-t)(format "%s" b-t))
 262                 (< a-order b-order))))))
 263
 264 (defun mime-unify-situations (entity-situation
 265                               condition situation-examples
 266                               &optional required-name ignored-value
 267                               every-situations)
 268   (let (ret)
 269     (in-calist-package 'mime-view)
 270     (setq ret
 271           (ctree-find-calist condition entity-situation
 272                              every-situations))
 273     (if required-name
 274         (setq ret (mime-delq-null-situation ret required-name
 275                                             ignored-value t)))
 276     (or (assq 'ignore-examples entity-situation)
 277         (if (cdr ret)
 278             (let ((rest ret)
 279                   (max-score 0)
 280                   (max-escore 0)
 281                   max-examples
 282                   max-situations)
 283               (while rest
 284                 (let ((situation (car rest))
 285                       (examples situation-examples))
 286                   (while examples
 287                     (let* ((ret
 288                             (mime-compare-situation-with-example
 289                              situation (caar examples)))
 290                            (ret-score (car ret)))
 291                       (cond ((> ret-score max-score)
 292                              (setq max-score ret-score
 293                                    max-escore (cdar examples)
 294                                    max-examples (list (cdr ret))
 295                                    max-situations (list situation)))
 296                             ((= ret-score max-score)
 297                              (cond ((> (cdar examples) max-escore)
 298                                     (setq max-escore (cdar examples)
 299                                           max-examples (list (cdr ret))
 300                                           max-situations (list situation)))
 301                                    ((= (cdar examples) max-escore)
 302                                     (setq max-examples
 303                                           (cons (cdr ret) max-examples))
 304                                     (or (member situation max-situations)
 305                                         (setq max-situations
 306                                               (cons situation max-situations))))))))
 307                     (setq examples (cdr examples))))
 308                 (setq rest (cdr rest)))
 309               (when max-situations
 310                 (setq ret max-situations)
 311                 (while max-examples
 312                   (let* ((example (car max-examples))
 313                          (cell
 314                           (assoc example situation-examples)))
 315                     (if cell
 316                         (setcdr cell (1+ (cdr cell)))
 317                       (setq situation-examples
 318                             (cons (cons example 0)
 319                                   situation-examples))))
 320                   (setq max-examples (cdr max-examples)))))))
 321     (cons ret situation-examples)
 322     ;; ret: list of situations
 323     ;; situation-examples: new examples (notoce that contents of
 324     ;;                     argument `situation-examples' has bees modified)
 325     ))
 326
 327 (defun mime-view-entity-title (entity)
 328   (or (mime-entity-read-field entity 'Content-Description)
 329       (mime-entity-read-field entity 'Subject)
 330       (mime-entity-filename entity)
 331       ""))
 332
 333 (defvar mime-preview-situation-example-list nil)
 334 (defvar mime-preview-situation-example-list-max-size 16)
 335 ;; (defvar mime-preview-situation-example-condition nil)
 336
 337 (defun mime-find-entity-preview-situation (entity
 338                                            &optional default-situation)
 339   (or (let ((ret
 340              (mime-unify-situations
 341               (append (mime-entity-situation entity)
 342                       default-situation)
 343               mime-preview-condition
 344               mime-preview-situation-example-list)))
 345         (setq mime-preview-situation-example-list
 346               (cdr ret))
 347         (caar ret))
 348       default-situation))
 349
 350
 351 (defvar mime-acting-situation-example-list nil)
 352 (defvar mime-acting-situation-example-list-max-size 16)
 353 (defvar mime-situation-examples-file-coding-system nil)
 354
 355 (defun mime-view-read-situation-examples-file (&optional file)
 356   (or file
 357       (setq file mime-situation-examples-file))
 358   (if (and file
 359            (file-readable-p file))
 360       (with-temp-buffer
 361         (insert-file-contents file)
 362         (setq mime-situation-examples-file-coding-system
 363               (static-cond
 364                ((boundp 'buffer-file-coding-system)
 365                 (symbol-value 'buffer-file-coding-system))
 366                ((boundp 'file-coding-system)
 367                 (symbol-value 'file-coding-system))
 368                (t nil))
 369               ;; (and (boundp 'buffer-file-coding-system)
 370               ;;      buffer-file-coding-system)
 371               )
 372         (condition-case error
 373             (eval-buffer)
 374           (error (message "%s is broken: %s" file (cdr error))))
 375         ;; format check
 376         (condition-case nil
 377             (let ((i 0))
 378               (while (and (> (length mime-preview-situation-example-list)
 379                              mime-preview-situation-example-list-max-size)
 380                           (< i 16))
 381                 (setq mime-preview-situation-example-list
 382                       (mime-reduce-situation-examples
 383                        mime-preview-situation-example-list))
 384                 (setq i (1+ i))))
 385           (error (setq mime-preview-situation-example-list nil)))
 386         ;; (let ((rest mime-preview-situation-example-list))
 387         ;;   (while rest
 388         ;;     (ctree-set-calist-strictly 'mime-preview-condition
 389         ;;                                (caar rest))
 390         ;;     (setq rest (cdr rest))))
 391         (condition-case nil
 392             (let ((i 0))
 393               (while (and (> (length mime-acting-situation-example-list)
 394                              mime-acting-situation-example-list-max-size)
 395                           (< i 16))
 396                 (setq mime-acting-situation-example-list
 397                       (mime-reduce-situation-examples
 398                        mime-acting-situation-example-list))
 399                 (setq i (1+ i))))
 400           (error (setq mime-acting-situation-example-list nil))))))
 401
 402 (defun mime-save-situation-examples ()
 403   (if (or mime-preview-situation-example-list
 404           mime-acting-situation-example-list)
 405       (let ((file mime-situation-examples-file)
 406             print-length print-level)
 407         (with-temp-buffer
 408           (insert ";;; " (file-name-nondirectory file) "\n")
 409           (insert "\n;; This file is generated automatically by "
 410                   mime-view-version "\n\n")
 411           (insert ";;; Code:\n\n")
 412           (if mime-preview-situation-example-list
 413               (pp `(setq mime-preview-situation-example-list
 414                          ',mime-preview-situation-example-list)
 415                   (current-buffer)))
 416           (if mime-acting-situation-example-list
 417               (pp `(setq mime-acting-situation-example-list
 418                          ',mime-acting-situation-example-list)
 419                   (current-buffer)))
 420           (insert "\n;;; "
 421                   (file-name-nondirectory file)
 422                   " ends here.\n")
 423           (static-cond
 424            ((boundp 'buffer-file-coding-system)
 425             (setq buffer-file-coding-system
 426                   mime-situation-examples-file-coding-system))
 427            ((boundp 'file-coding-system)
 428             (setq file-coding-system
 429                   mime-situation-examples-file-coding-system)))
 430           ;; (setq buffer-file-coding-system
 431           ;;       mime-situation-examples-file-coding-system)
 432           (setq buffer-file-name file)
 433           (save-buffer)))))
 434
 435 (add-hook 'kill-emacs-hook 'mime-save-situation-examples)
 436
 437 (defun mime-reduce-situation-examples (situation-examples)
 438   (let ((len (length situation-examples))
 439         i ir ic j jr jc ret
 440         dest d-i d-j
 441         (max-sim 0) sim
 442         min-det-ret det-ret
 443         min-det-org det-org
 444         min-freq freq)
 445     (setq i 0
 446           ir situation-examples)
 447     (while (< i len)
 448       (setq ic (car ir)
 449             j 0
 450             jr situation-examples)
 451       (while (< j len)
 452         (unless (= i j)
 453           (setq jc (car jr))
 454           (setq ret (mime-compare-situation-with-example (car ic)(car jc))
 455                 sim (car ret)
 456                 det-ret (+ (length (car ic))(length (car jc)))
 457                 det-org (length (cdr ret))
 458                 freq (+ (cdr ic)(cdr jc)))
 459           (cond ((< max-sim sim)
 460                  (setq max-sim sim
 461                        min-det-ret det-ret
 462                        min-det-org det-org
 463                        min-freq freq
 464                        d-i i
 465                        d-j j
 466                        dest (cons (cdr ret) freq)))
 467                 ((= max-sim sim)
 468                  (cond ((> min-det-ret det-ret)
 469                         (setq min-det-ret det-ret
 470                               min-det-org det-org
 471                               min-freq freq
 472                               d-i i
 473                               d-j j
 474                               dest (cons (cdr ret) freq)))
 475                        ((= min-det-ret det-ret)
 476                         (cond ((> min-det-org det-org)
 477                                (setq min-det-org det-org
 478                                      min-freq freq
 479                                      d-i i
 480                                      d-j j
 481                                      dest (cons (cdr ret) freq)))
 482                               ((= min-det-org det-org)
 483                                (cond ((> min-freq freq)
 484                                       (setq min-freq freq
 485                                             d-i i
 486                                             d-j j
 487                                             dest (cons (cdr ret) freq)))))))))))
 488         (setq jr (cdr jr)
 489               j (1+ j)))
 490       (setq ir (cdr ir)
 491             i (1+ i)))
 492     (if (> d-i d-j)
 493         (setq i d-i
 494               d-i d-j
 495               d-j i))
 496     (setq jr (nthcdr (1- d-j) situation-examples))
 497     (setcdr jr (cddr jr))
 498     (if (= d-i 0)
 499         (setq situation-examples
 500               (cdr situation-examples))
 501       (setq ir (nthcdr (1- d-i) situation-examples))
 502       (setcdr ir (cddr ir)))
 503     (if (setq ir (assoc (car dest) situation-examples))
 504         (progn
 505           (setcdr ir (+ (cdr ir)(cdr dest)))
 506           situation-examples)
 507       (cons dest situation-examples)
 508       ;; situation-examples may be modified.
 509       )))
 510
 511
 512 ;;; @ presentation of preview
 513 ;;;
 514
 515 ;;; @@ entity-button
 516 ;;;
 517
 518 ;;; @@@ predicate function
 519 ;;;
 520
 521 ;; (defun mime-view-entity-button-visible-p (entity)
 522 ;;   "Return non-nil if header of ENTITY is visible.
 523 ;; Please redefine this function if you want to change default setting."
 524 ;;   (let ((media-type (mime-entity-media-type entity))
 525 ;;         (media-subtype (mime-entity-media-subtype entity)))
 526 ;;     (or (not (eq media-type 'application))
 527 ;;         (and (not (eq media-subtype 'x-selection))
 528 ;;              (or (not (eq media-subtype 'octet-stream))
 529 ;;                  (let ((mother-entity (mime-entity-parent entity)))
 530 ;;                    (or (not (eq (mime-entity-media-type mother-entity)
 531 ;;                                 'multipart))
 532 ;;                        (not (eq (mime-entity-media-subtype mother-entity)
 533 ;;                                 'encrypted)))
 534 ;;                    )
 535 ;;                  )))))
 536
 537 ;;; @@@ entity button generator
 538 ;;;
 539
 540 (defun mime-view-insert-entity-button (entity)
 541   "Insert entity-button of ENTITY."
 542   (let ((entity-node-id (mime-entity-node-id entity))
 543         (params (mime-entity-parameters entity))
 544         (subject (mime-view-entity-title entity)))
 545     (mime-insert-button
 546      (let ((access-type (assoc "access-type" params))
 547            (num (or (cdr (assoc "x-part-number" params))
 548                     (if (consp entity-node-id)
 549                         (mapconcat (function
 550                                     (lambda (num)
 551                                       (format "%s" (1+ num))))
 552                                    (reverse entity-node-id) ".")
 553                       "0"))))
 554        (cond (access-type
 555               (let ((server (assoc "server" params)))
 556                 (setq access-type (cdr access-type))
 557                 (if server
 558                     (format "%s %s ([%s] %s)"
 559                             num subject access-type (cdr server))
 560                 (let ((site (cdr (assoc "site" params)))
 561                       (dir (cdr (assoc "directory" params)))
 562                       (url (cdr (assoc "url" params))))
 563                   (if url
 564                       (format "%s %s ([%s] %s)"
 565                               num subject access-type url)
 566                     (format "%s %s ([%s] %s:%s)"
 567                             num subject access-type site dir))))))
 568            (t
 569             (let ((media-type (mime-entity-media-type entity))
 570                   (media-subtype (mime-entity-media-subtype entity))
 571                   (charset (cdr (assoc "charset" params)))
 572                   (encoding (mime-entity-encoding entity)))
 573               (concat
 574                num " " subject
 575                (let ((rest
 576                       (format " <%s/%s%s%s>"
 577                               media-type media-subtype
 578                               (if charset
 579                                   (concat "; " charset)
 580                                 "")
 581                               (if encoding
 582                                   (concat " (" encoding ")")
 583                                 ""))))
 584                  (if (>= (+ (current-column)(length rest))(window-width))
 585                      "\n\t")
 586                  rest))))))
 587      (function mime-preview-play-current-entity))))
 588
 589
 590 ;;; @@ entity-header
 591 ;;;
 592
 593 (defvar mime-header-presentation-method-alist nil
 594   "Alist of major mode vs. corresponding header-presentation-method functions.
 595 Each element looks like (SYMBOL . FUNCTION).
 596 SYMBOL must be major mode in raw-buffer or t.  t means default.
 597 Interface of FUNCTION must be (ENTITY SITUATION).")
 598
 599 (defvar mime-view-ignored-field-list
 600   '(".*Received:" ".*Path:" ".*Id:" "^References:"
 601     "^Replied:" "^Errors-To:"
 602     "^Lines:" "^Sender:" ".*Host:" "^Xref:"
 603     "^Content-Type:" "^Precedence:"
 604     "^Status:" "^X-VM-.*:")
 605   "All fields that match this list will be hidden in MIME preview buffer.
 606 Each elements are regexp of field-name.")
 607
 608 (defvar mime-view-visible-field-list '("^Dnas.*:" "^Message-Id:")
 609   "All fields that match this list will be displayed in MIME preview buffer.
 610 Each elements are regexp of field-name.")
 611
 612
 613 ;;; @@ entity-body
 614 ;;;
 615
 616 ;;; @@@ predicate function
 617 ;;;
 618
 619 (in-calist-package 'mime-view)
 620
 621 (defun mime-calist::field-match-method-as-default-rule (calist
 622                                                         field-type field-value)
 623   (let ((s-field (assq field-type calist)))
 624     (cond ((null s-field)
 625            (cons (cons field-type field-value) calist))
 626           (t calist))))
 627
 628 (define-calist-field-match-method
 629   'header #'mime-calist::field-match-method-as-default-rule)
 630
 631 (define-calist-field-match-method
 632   'body #'mime-calist::field-match-method-as-default-rule)
 633
 634
 635 (defvar mime-preview-condition nil
 636   "Condition-tree about how to display entity.")
 637
 638 (ctree-set-calist-strictly
 639  'mime-preview-condition '((type . application)(subtype . octet-stream)
 640                            (encoding . nil)
 641                            (body . visible)))
 642 (ctree-set-calist-strictly
 643  'mime-preview-condition '((type . application)(subtype . octet-stream)
 644                            (encoding . "7bit")
 645                            (body . visible)))
 646 (ctree-set-calist-strictly
 647  'mime-preview-condition '((type . application)(subtype . octet-stream)
 648                            (encoding . "8bit")
 649                            (body . visible)))
 650
 651 (ctree-set-calist-strictly
 652  'mime-preview-condition '((type . application)(subtype . pgp)
 653                            (body . visible)))
 654
 655 (ctree-set-calist-strictly
 656  'mime-preview-condition '((type . application)(subtype . x-latex)
 657                            (body . visible)))
 658
 659 (ctree-set-calist-strictly
 660  'mime-preview-condition '((type . application)(subtype . x-selection)
 661                            (body . visible)))
 662
 663 (ctree-set-calist-strictly
 664  'mime-preview-condition '((type . application)(subtype . x-comment)
 665                            (body . visible)))
 666
 667 (ctree-set-calist-strictly
 668  'mime-preview-condition '((type . message)(subtype . delivery-status)
 669                            (body . visible)))
 670
 671 (ctree-set-calist-strictly
 672  'mime-preview-condition
 673  '((body . visible)
 674    (body-presentation-method . mime-display-text/plain)))
 675
 676 (defvar mime-preview-fill-flowed-text
 677   (module-installed-p 'flow-fill)
 678   "If non-nil, fill RFC2646 \"flowed\" text.")
 679
 680 (autoload 'fill-flowed "flow-fill")
 681
 682 (defvar mime-preview-inline-fontify t
 683   "If non-nil, fontify the inline part.")
 684
 685 (ctree-set-calist-strictly
 686  'mime-preview-condition
 687  '((type . nil)
 688    (body . visible)
 689    (body-presentation-method . mime-display-text/plain)))
 690
 691 (ctree-set-calist-strictly
 692  'mime-preview-condition
 693  '((type . text)(subtype . enriched)
 694    (body . visible)
 695    (body-presentation-method . mime-display-text/enriched)))
 696
 697 (ctree-set-calist-strictly
 698  'mime-preview-condition
 699  '((type . text)(subtype . richtext)
 700    (body . visible)
 701    (body-presentation-method . mime-display-text/richtext)))
 702
 703 (autoload 'mime-display-application/x-postpet "postpet")
 704
 705 (ctree-set-calist-strictly
 706  'mime-preview-condition
 707  '((type . application)(subtype . x-postpet)
 708    (body . visible)
 709    (body-presentation-method . mime-display-application/x-postpet)))
 710
 711 (ctree-set-calist-strictly
 712  'mime-preview-condition
 713  '((type . application)(subtype . emacs-lisp)
 714    (body . visible)
 715    (body-presentation-method . mime-display-application/emacs-lisp)))
 716
 717 (ctree-set-calist-strictly
 718  'mime-preview-condition
 719  '((type . text)(subtype . t)
 720    (body . visible)
 721    (body-presentation-method . mime-display-text/plain)))
 722
 723 (ctree-set-calist-strictly
 724  'mime-preview-condition
 725  '((type . multipart)(subtype . alternative)
 726    (body . visible)
 727    (body-presentation-method . mime-display-multipart/alternative)))
 728
 729 (ctree-set-calist-strictly
 730  'mime-preview-condition
 731  '((type . multipart)(subtype . related)
 732    (body . visible)
 733    (body-presentation-method . mime-display-multipart/related)))
 734
 735 (ctree-set-calist-strictly
 736  'mime-preview-condition
 737  '((type . multipart)(subtype . t)
 738    (body . visible)
 739    (body-presentation-method . mime-display-multipart/mixed)))
 740
 741 (ctree-set-calist-strictly
 742  'mime-preview-condition
 743  '((type . message)(subtype . partial)
 744    (body . visible)
 745    (body-presentation-method . mime-display-message/partial-button)))
 746
 747 (ctree-set-calist-strictly
 748  'mime-preview-condition
 749  '((type . message)(subtype . rfc822)
 750    (body . visible)
 751    (body-presentation-method . mime-display-multipart/mixed)
 752    (childrens-situation (header . visible)
 753                         (entity-button . invisible))))
 754
 755 (ctree-set-calist-strictly
 756  'mime-preview-condition
 757  '((type . message)(subtype . news)
 758    (body . visible)
 759    (body-presentation-method . mime-display-multipart/mixed)
 760    (childrens-situation (header . visible)
 761                         (entity-button . invisible))))
 762
 763
 764 ;;; @@@ entity presentation
 765 ;;;
 766
 767 (defun mime-display-text/plain (entity situation)
 768   (save-restriction
 769     (narrow-to-region (point-max)(point-max))
 770     (condition-case nil
 771         (if (and mime-preview-inline-fontify
 772                  (mime-entity-filename entity)) ;should be an attachment.
 773             (mime-view-insert-fontified-text-content entity situation)
 774           (mime-view-insert-text-content entity situation))
 775       (error (progn
 776                (message "Can't decode current entity.")
 777                (sit-for 1))))
 778     (run-hooks 'mime-text-decode-hook)
 779     (goto-char (point-max))
 780     (if (not (eq (char-after (1- (point))) ?\n))
 781         (insert "\n"))
 782     (if (and mime-preview-fill-flowed-text
 783              (equal (cdr (assoc "format" situation)) "flowed"))
 784         (fill-flowed))
 785     (mime-add-url-buttons)
 786     (run-hooks 'mime-display-text/plain-hook)))
 787
 788 (defun mime-display-text/richtext (entity situation)
 789   (save-restriction
 790     (narrow-to-region (point-max)(point-max))
 791     (mime-view-insert-text-content entity situation)
 792     (run-hooks 'mime-text-decode-hook)
 793     (let ((beg (point-min)))
 794       (remove-text-properties beg (point-max) '(face nil))
 795       (richtext-decode beg (point-max)))))
 796
 797 (defun mime-display-text/enriched (entity situation)
 798   (save-restriction
 799     (narrow-to-region (point-max)(point-max))
 800     (mime-view-insert-text-content entity situation)
 801     (run-hooks 'mime-text-decode-hook)
 802     (let ((beg (point-min)))
 803       (remove-text-properties beg (point-max) '(face nil))
 804       (enriched-decode beg (point-max)))))
 805
 806 (defvar mime-view-announcement-for-message/partial
 807   "This is message/partial style split message.")
 808
 809 (defun mime-display-message/partial-button (&optional entity situation)
 810   (save-restriction
 811     (goto-char (point-max))
 812     (if (not (search-backward "\n\n" nil t))
 813         (insert "\n"))
 814     (goto-char (point-max))
 815     (mime-insert-button mime-view-announcement-for-message/partial
 816                         #'mime-preview-play-current-entity)))
 817
 818 (defun mime-display-multipart/mixed (entity situation)
 819   (let ((children (mime-entity-children entity))
 820         (original-major-mode-cell (assq 'major-mode situation))
 821         (default-situation
 822           (cdr (assq 'childrens-situation situation))))
 823     (if original-major-mode-cell
 824         (setq default-situation
 825               (cons original-major-mode-cell default-situation)))
 826     (while children
 827       (mime-display-entity (car children) nil default-situation)
 828       (setq children (cdr children)))))
 829
 830 (defcustom mime-view-type-subtype-score-alist
 831   '(((text . enriched) . 3)
 832     ((text . richtext) . 2)
 833     ((text . plain)    . 1)
 834     (t . 0))
 835   "Alist MEDIA-TYPE vs corresponding score.
 836 MEDIA-TYPE must be (TYPE . SUBTYPE), TYPE or t.  t means default."
 837   :group 'mime-view
 838   :type '(repeat (cons (choice :tag "Media-Type"
 839                                (cons :tag "Type/Subtype"
 840                                      (symbol :tag "Primary-type")
 841                                      (symbol :tag "Subtype"))
 842                                (symbol :tag "Type")
 843                                (const :tag "Default" t))
 844                        integer)))
 845
 846 (defun mime-display-multipart/alternative (entity situation)
 847   (let* ((children (mime-entity-children entity))
 848          (original-major-mode-cell (assq 'major-mode situation))
 849          (default-situation
 850            (cdr (assq 'childrens-situation situation)))
 851          (i 0)
 852          (p 0)
 853          (max-score 0)
 854          situations)
 855     (if original-major-mode-cell
 856         (setq default-situation
 857               (cons original-major-mode-cell default-situation)))
 858     (setq situations
 859           (mapcar (function
 860                    (lambda (child)
 861                      (let ((situation
 862                             (mime-find-entity-preview-situation
 863                              child default-situation)))
 864                        (if (cdr (assq 'body-presentation-method situation))
 865                            (let ((score
 866                                   (cdr
 867                                    (or (assoc
 868                                         (cons
 869                                          (cdr (assq 'type situation))
 870                                          (cdr (assq 'subtype situation)))
 871                                         mime-view-type-subtype-score-alist)
 872                                        (assq
 873                                         (cdr (assq 'type situation))
 874                                         mime-view-type-subtype-score-alist)
 875                                        (assq
 876                                         t
 877                                         mime-view-type-subtype-score-alist)))))
 878                              (if (> score max-score)
 879                                  (setq p i
 880                                        max-score score))))
 881                        (setq i (1+ i))
 882                        situation)))
 883                   children))
 884     (setq i 0)
 885     (while children
 886       (let ((child (car children))
 887             (situation (car situations)))
 888         (mime-display-entity child (if (= i p)
 889                                        situation
 890                                      (put-alist 'body 'invisible
 891                                                 (copy-alist situation)))))
 892       (setq children (cdr children)
 893             situations (cdr situations)
 894             i (1+ i)))))
 895
 896 (defun mime-display-multipart/related (entity situation)
 897   (let* ((param-start (mime-parse-msg-id
 898                        (std11-lexical-analyze
 899                         (cdr (assoc "start"
 900                                     (mime-content-type-parameters
 901                                      (mime-entity-content-type entity)))))))
 902          (start (or (and param-start (mime-find-entity-from-content-id
 903                                       param-start
 904                                       entity))
 905                     (car (mime-entity-children entity))))
 906          (original-major-mode-cell (assq 'major-mode situation))
 907          (default-situation (cdr (assq 'childrens-situation situation))))
 908     (when start
 909       (if original-major-mode-cell
 910           (setq default-situation
 911                 (cons original-major-mode-cell default-situation)))
 912       (mime-display-entity start nil default-situation))))
 913
 914 (defun mime-view-entity-content (entity situation)
 915   (mime-decode-string
 916    (mime-entity-body entity)
 917    (mime-view-guess-encoding entity situation)))
 918
 919 (defun mime-view-insert-text-content (entity situation)
 920   (let (compression-info)
 921     (cond
 922      ((and (mime-entity-filename entity)
 923            (featurep 'jka-compr)
 924            (jka-compr-installed-p)
 925            (setq compression-info (jka-compr-get-compression-info
 926                                    (mime-entity-filename entity))))
 927       (insert
 928        (mime-view-filter-text-content
 929         (mime-view-entity-content entity situation)
 930         (jka-compr-info-uncompress-program compression-info)
 931         (jka-compr-info-uncompress-args compression-info))))
 932      ((or (assq '*encoding situation)   ;should be specified by user
 933           (assq '*charset situation))   ;should be specified by user
 934       (insert
 935        (decode-mime-charset-string
 936         (mime-view-entity-content entity situation)
 937         (mime-view-guess-charset entity situation)
 938         'CRLF)))
 939      (t
 940       (mime-insert-text-content entity)))))
 941
 942 ;;; stolen (and renamed) from `mime-display-gzipped' of EMY 1.13.
 943 (defun mime-view-filter-text-content (content program args)
 944   (with-temp-buffer
 945     (static-cond
 946      ((featurep 'xemacs)
 947       (insert content)
 948       (apply #'binary-to-text-funcall
 949              mime-view-automatic-conversion
 950              #'call-process-region (point-min)(point-max)
 951              program t t args))
 952      (t
 953       (if (not (multibyte-string-p content))
 954           (set-buffer-multibyte nil))
 955       (insert content)
 956       (apply #'binary-funcall
 957              #'call-process-region (point-min)(point-max)
 958              program t t args)
 959       (set-buffer-multibyte t)
 960       (decode-coding-region (point-min)(point-max)
 961                             mime-view-automatic-conversion)))
 962     (buffer-string)))
 963
 964 ;;; stolen (and renamed) from mm-view.el.
 965 (defun mime-view-insert-fontified-text-content (entity situation
 966                                                        &optional mode)
 967   ;; XEmacs @#$@ version of font-lock refuses to fully turn itself
 968   ;; on for buffers whose name begins with " ".  That's why we use
 969   ;; save-current-buffer/get-buffer-create rather than
 970   ;; with-temp-buffer.
 971   (let ((buffer (generate-new-buffer "*fontification*"))
 972         filename)
 973     (unwind-protect
 974         (progn
 975           (save-current-buffer
 976             (set-buffer buffer)
 977             (buffer-disable-undo)
 978             (kill-all-local-variables)
 979             (mime-view-insert-text-content entity situation)
 980             (require 'font-lock)
 981             ;; Inhibit font-lock this time (*-mode-hook might run
 982             ;; `turn-on-font-lock') so that jit-lock may not turn off
 983             ;; font-lock immediately after this.
 984             (let ((font-lock-mode t))
 985               (cond (mode
 986                      (funcall mode))
 987                     ((setq filename (mime-entity-filename entity))
 988                      (let ((buffer-file-name
 989                             (expand-file-name (file-name-nondirectory filename)
 990                                               temporary-file-directory)))
 991                        (set-auto-mode)))))
 992             (let ((font-lock-verbose nil))
 993               ;; I find font-lock a bit too verbose.
 994               (font-lock-fontify-buffer))
 995             ;; By default, XEmacs font-lock uses non-duplicable text
 996             ;; properties.  This code forces all the text properties
 997             ;; to be copied along with the text.
 998             (static-when (fboundp 'extent-list)
 999               (map-extents (lambda (ext ignored)
1000                              (set-extent-property ext 'duplicable t)
1001                              nil)
1002                            nil nil nil nil nil 'text-prop)))
1003           (insert-buffer-substring buffer))
1004       (kill-buffer buffer))))
1005
1006 (defun mime-display-application/emacs-lisp (entity situation)
1007   (save-restriction
1008     (narrow-to-region (point-max)(point-max))
1009     (mime-view-insert-fontified-text-content entity situation 'emacs-lisp-mode)
1010     (run-hooks 'mime-text-decode-hook 'mime-display-text/plain-hook)))
1011
1012
1013 ;;; @ acting-condition
1014 ;;;
1015
1016 (defvar mime-acting-condition nil
1017   "Condition-tree about how to process entity.")
1018
1019 (defun mime-view-read-mailcap-files (&optional files)
1020   (or files
1021       (setq files mime-view-mailcap-files))
1022   (let (entries file)
1023     (while files
1024       (setq file (car files))
1025       (if (file-readable-p file)
1026           (setq entries (append entries (mime-parse-mailcap-file file))))
1027       (setq files (cdr files)))
1028     (while entries
1029       (let ((entry (car entries))
1030             view print shared)
1031         (while entry
1032           (let* ((field (car entry))
1033                  (field-type (car field)))
1034             (cond ((eq field-type 'view)  (setq view field))
1035                   ((eq field-type 'print) (setq print field))
1036                   ((memq field-type '(compose composetyped edit)))
1037                   (t (setq shared (cons field shared))))
1038             )
1039           (setq entry (cdr entry)))
1040         (setq shared (nreverse shared))
1041         (ctree-set-calist-with-default
1042          'mime-acting-condition
1043          (append shared (list '(mode . "play")(cons 'method (cdr view)))))
1044         (if print
1045             (ctree-set-calist-with-default
1046              'mime-acting-condition
1047              (append shared
1048                      (list '(mode . "print")(cons 'method (cdr view)))))))
1049       (setq entries (cdr entries)))))
1050
1051 (mime-view-read-mailcap-files)
1052
1053 (ctree-set-calist-strictly
1054  'mime-acting-condition
1055  '((type . application)(subtype . octet-stream)
1056    (mode . "play")
1057    (method . mime-detect-content)))
1058
1059 (ctree-set-calist-with-default
1060  'mime-acting-condition
1061  '((mode . "extract")
1062    (method . mime-save-content)))
1063
1064 (ctree-set-calist-strictly
1065  'mime-acting-condition
1066  '((type . text)(subtype . x-rot13-47)(mode . "play")
1067    (method . mime-view-caesar)))
1068 (ctree-set-calist-strictly
1069  'mime-acting-condition
1070  '((type . text)(subtype . x-rot13-47-48)(mode . "play")
1071    (method . mime-view-caesar)))
1072
1073 (ctree-set-calist-strictly
1074  'mime-acting-condition
1075  '((type . message)(subtype . rfc822)(mode . "play")
1076    (method . mime-view-message/rfc822)))
1077 (ctree-set-calist-strictly
1078  'mime-acting-condition
1079  '((type . message)(subtype . partial)(mode . "play")
1080    (method . mime-store-message/partial-piece)))
1081
1082 (ctree-set-calist-strictly
1083  'mime-acting-condition
1084  '((type . message)(subtype . external-body)
1085    ("access-type" . "anon-ftp")
1086    (method . mime-view-message/external-anon-ftp)))
1087
1088 (ctree-set-calist-strictly
1089  'mime-acting-condition
1090  '((type . message)(subtype . external-body)
1091    ("access-type" . "url")
1092    (method . mime-view-message/external-url)))
1093
1094 (ctree-set-calist-strictly
1095  'mime-acting-condition
1096  '((type . application)(subtype . octet-stream)
1097    (method . mime-save-content)))
1098
1099
1100 ;;; @ quitting method
1101 ;;;
1102
1103 (defvar mime-preview-quitting-method-alist
1104   '((mime-show-message-mode
1105      . mime-preview-quitting-method-for-mime-show-message-mode))
1106   "Alist of major-mode vs. quitting-method of mime-view.")
1107
1108 (defvar mime-preview-over-to-previous-method-alist nil
1109   "Alist of major-mode vs. over-to-previous-method of mime-view.")
1110
1111 (defvar mime-preview-over-to-next-method-alist nil
1112   "Alist of major-mode vs. over-to-next-method of mime-view.")
1113
1114
1115 ;;; @ following method
1116 ;;;
1117
1118 (defvar mime-preview-following-method-alist nil
1119   "Alist of major-mode vs. following-method of mime-view.")
1120
1121 (defvar mime-view-following-required-fields-list
1122   '("From"))
1123
1124
1125 ;;; @ buffer setup
1126 ;;;
1127
1128 (defun mime-display-entity (entity &optional situation
1129                                    default-situation preview-buffer)
1130   (or preview-buffer
1131       (setq preview-buffer (current-buffer)))
1132   (let* (e nb ne nhb nbb)
1133     (in-calist-package 'mime-view)
1134     (or situation
1135         (setq situation
1136               (mime-find-entity-preview-situation entity default-situation)))
1137     (let ((button-is-invisible
1138            (eq (cdr (or (assq '*entity-button situation)
1139                         (assq 'entity-button situation)))
1140                'invisible))
1141           (header-is-visible
1142            (eq (cdr (or (assq '*header situation)
1143                         (assq 'header situation)))
1144                'visible))
1145           (body-is-visible
1146            (eq (cdr (or (assq '*body situation)
1147                         (assq 'body situation)))
1148                'visible))
1149           (children (mime-entity-children entity)))
1150       (set-buffer preview-buffer)
1151       (setq nb (point))
1152       (narrow-to-region nb nb)
1153       (or button-is-invisible
1154           ;; (if (mime-view-entity-button-visible-p entity)
1155           (mime-view-insert-entity-button entity)
1156           ;;   )
1157           )
1158       (if header-is-visible
1159           (let ((header-presentation-method
1160                  (or (cdr (assq 'header-presentation-method situation))
1161                      (cdr (assq (cdr (assq 'major-mode situation))
1162                                 mime-header-presentation-method-alist)))))
1163             (setq nhb (point))
1164             (if header-presentation-method
1165                 (funcall header-presentation-method entity situation)
1166               (mime-insert-header entity
1167                                   mime-view-ignored-field-list
1168                                   mime-view-visible-field-list))
1169             (mime-add-url-buttons)
1170             (run-hooks 'mime-display-header-hook)
1171             (put-text-property nhb (point-max) 'mime-view-entity-header entity)
1172             (goto-char (point-max))
1173             (insert "\n")))
1174       (setq nbb (point))
1175       (unless children
1176         (if body-is-visible
1177             (let ((body-presentation-method
1178                    (cdr (assq 'body-presentation-method situation))))
1179               (if (functionp body-presentation-method)
1180                   (funcall body-presentation-method entity situation)
1181                 (mime-display-text/plain entity situation)))
1182           (when button-is-invisible
1183             (goto-char (point-max))
1184             (mime-view-insert-entity-button entity))
1185           (unless header-is-visible
1186             (goto-char (point-max))
1187             (insert "\n"))))
1188       (setq ne (point-max))
1189       (widen)
1190       (put-text-property nb ne 'mime-view-entity entity)
1191       (put-text-property nb ne 'mime-view-situation situation)
1192       (put-text-property nbb ne 'mime-view-entity-body entity)
1193       (goto-char ne)
1194       (if (and children body-is-visible)
1195           (let ((body-presentation-method
1196                  (cdr (assq 'body-presentation-method situation))))
1197             (if (functionp body-presentation-method)
1198                 (funcall body-presentation-method entity situation)
1199               (mime-display-multipart/mixed entity situation)))))))
1200
1201
1202 ;;; @ MIME viewer mode
1203 ;;;
1204
1205 (defconst mime-view-popup-menu-list
1206   '("MIME-View"
1207     ["Move to upper entity" mime-preview-move-to-upper]
1208     ["Move to previous entity" mime-preview-move-to-previous]
1209     ["Move to next entity" mime-preview-move-to-next]
1210     ["Scroll-down" mime-preview-scroll-down-entity]
1211     ["Scroll-up" mime-preview-scroll-up-entity]
1212     ["Play current entity" mime-preview-play-current-entity]
1213     ["Extract current entity" mime-preview-extract-current-entity]
1214     ["Print current entity" mime-preview-print-current-entity])
1215   "Menu for MIME Viewer")
1216
1217 (defun mime-view-popup-menu (event)
1218   "Popup the menu in the MIME Viewer buffer"
1219   (interactive "@e")
1220   (mime-popup-menu-popup mime-view-popup-menu-list event))
1221
1222 ;;; The current local map is taken precendence over `widget-keymap',
1223 ;;; because GNU Emacs' widget implementation doesn't set `local-map' property.
1224 ;;;  So we need to specify derivation.
1225 (defvar widget-keymap)
1226 (defun mime-view-maybe-inherit-widget-keymap ()
1227   (when (boundp 'widget-keymap)
1228     (set-keymap-parent (current-local-map) widget-keymap)))
1229
1230 (add-hook 'mime-view-mode-hook 'mime-view-maybe-inherit-widget-keymap)
1231
1232 (defun mime-view-define-keymap (&optional default)
1233   (let ((mime-view-mode-map (if (keymapp default)
1234                                 (copy-keymap default)
1235                               (make-sparse-keymap))))
1236     (define-key mime-view-mode-map
1237       "u"        (function mime-preview-move-to-upper))
1238     (define-key mime-view-mode-map
1239       "p"        (function mime-preview-move-to-previous))
1240     (define-key mime-view-mode-map
1241       "n"        (function mime-preview-move-to-next))
1242     (define-key mime-view-mode-map
1243       "\e\t"     (function mime-preview-move-to-previous))
1244     (define-key mime-view-mode-map
1245       "\t"       (function mime-preview-move-to-next))
1246     (define-key mime-view-mode-map
1247       " "        (function mime-preview-scroll-up-entity))
1248     (define-key mime-view-mode-map
1249       "\M- "     (function mime-preview-scroll-down-entity))
1250     (define-key mime-view-mode-map
1251       "\177"     (function mime-preview-scroll-down-entity))
1252     (define-key mime-view-mode-map
1253       "\C-m"     (function mime-preview-next-line-entity))
1254     (define-key mime-view-mode-map
1255       "\C-\M-m"  (function mime-preview-previous-line-entity))
1256     (define-key mime-view-mode-map
1257       "v"        (function mime-preview-play-current-entity))
1258     (define-key mime-view-mode-map
1259       "e"        (function mime-preview-extract-current-entity))
1260     (define-key mime-view-mode-map
1261       "\C-c\C-p" (function mime-preview-print-current-entity))
1262
1263     (define-key mime-view-mode-map
1264       "\C-c\C-t\C-f" (function mime-preview-toggle-header))
1265     (define-key mime-view-mode-map
1266       "\C-c\C-th" (function mime-preview-toggle-header))
1267     (define-key mime-view-mode-map
1268       "\C-c\C-t\C-c" (function mime-preview-toggle-content))
1269
1270     (define-key mime-view-mode-map
1271       "\C-c\C-v\C-f" (function mime-preview-show-header))
1272     (define-key mime-view-mode-map
1273       "\C-c\C-vh" (function mime-preview-show-header))
1274     (define-key mime-view-mode-map
1275       "\C-c\C-v\C-c" (function mime-preview-show-content))
1276
1277     (define-key mime-view-mode-map
1278       "\C-c\C-d\C-f" (function mime-preview-hide-header))
1279     (define-key mime-view-mode-map
1280       "\C-c\C-dh" (function mime-preview-hide-header))
1281     (define-key mime-view-mode-map
1282       "\C-c\C-d\C-c" (function mime-preview-hide-content))
1283
1284     (define-key mime-view-mode-map
1285       "a"        (function mime-preview-follow-current-entity))
1286     (define-key mime-view-mode-map
1287       "q"        (function mime-preview-quit))
1288     (define-key mime-view-mode-map
1289       "\C-c\C-x" (function mime-preview-kill-buffer))
1290     ;; (define-key mime-view-mode-map
1291     ;;   "<"        (function beginning-of-buffer))
1292     ;; (define-key mime-view-mode-map
1293     ;;   ">"        (function end-of-buffer))
1294     (define-key mime-view-mode-map
1295       "?"        (function describe-mode))
1296     (define-key mime-view-mode-map
1297       [tab] (function mime-preview-move-to-next))
1298     (define-key mime-view-mode-map
1299       [delete] (function mime-preview-scroll-down-entity))
1300     (define-key mime-view-mode-map
1301       [backspace] (function mime-preview-scroll-down-entity))
1302     (if (functionp default)
1303         (if (featurep 'xemacs)
1304             (set-keymap-default-binding mime-view-mode-map default)
1305           (setq mime-view-mode-map
1306                 (append mime-view-mode-map (list (cons t default))))))
1307     (define-key mime-view-mode-map
1308       [down-mouse-3] (function mime-view-popup-menu))
1309     ;; (run-hooks 'mime-view-define-keymap-hook)
1310     mime-view-mode-map))
1311
1312 (defvar mime-view-mode-default-map (mime-view-define-keymap))
1313
1314
1315 (defsubst mime-maybe-hide-echo-buffer ()
1316   "Clear mime-echo buffer and delete window for it."
1317   (let ((buf (get-buffer mime-echo-buffer-name)))
1318     (if buf
1319         (save-excursion
1320           (set-buffer buf)
1321           (erase-buffer)
1322           (let ((win (get-buffer-window buf)))
1323             (if win
1324                 (delete-window win)))
1325           (bury-buffer buf)))))
1326
1327 (defvar mime-view-redisplay nil)
1328
1329 ;;;###autoload
1330 (defun mime-display-message (message &optional preview-buffer
1331                                      mother default-keymap-or-function
1332                                      original-major-mode keymap)
1333   "View MESSAGE in MIME-View mode.
1334
1335 Optional argument PREVIEW-BUFFER specifies the buffer of the
1336 presentation.  It must be either nil or a name of preview buffer.
1337
1338 Optional argument MOTHER specifies mother-buffer of the preview-buffer.
1339
1340 Optional argument DEFAULT-KEYMAP-OR-FUNCTION is nil, keymap or
1341 function.  If it is a keymap, keymap of MIME-View mode will be added
1342 to it.  If it is a function, it will be bound as default binding of
1343 keymap of MIME-View mode.
1344
1345 Optional argument ORIGINAL-MAJOR-MODE is major-mode of representation
1346 buffer of MESSAGE.  If it is nil, current `major-mode' is used.
1347
1348 Optional argument KEYMAP is keymap of MIME-View mode.  If it is
1349 non-nil, DEFAULT-KEYMAP-OR-FUNCTION is ignored.  If it is nil,
1350 `mime-view-mode-default-map' is used."
1351   (mime-maybe-hide-echo-buffer)
1352   (let ((win-conf (current-window-configuration)))
1353     (or preview-buffer
1354         (setq preview-buffer
1355               (concat "*Preview-" (mime-entity-name message) "*")))
1356     (or original-major-mode
1357         (setq original-major-mode major-mode))
1358     (let ((inhibit-read-only t))
1359       (set-buffer (get-buffer-create preview-buffer))
1360       (widen)
1361       (erase-buffer)
1362       (if mother
1363           (setq mime-mother-buffer mother))
1364       (setq mime-preview-original-window-configuration win-conf)
1365       (setq major-mode 'mime-view-mode)
1366       (setq mode-name "MIME-View")
1367       (mime-display-entity message nil
1368                            `((entity-button . invisible)
1369                              (header . visible)
1370                              (major-mode . ,original-major-mode))
1371                            preview-buffer)
1372       (use-local-map
1373        (or keymap
1374            (if default-keymap-or-function
1375                (mime-view-define-keymap default-keymap-or-function)
1376              mime-view-mode-default-map)))
1377       (let ((point
1378              (next-single-property-change (point-min) 'mime-view-entity)))
1379         (if point
1380             (goto-char point)
1381           (goto-char (point-min))
1382           (search-forward "\n\n" nil t)))
1383       (run-hooks 'mime-view-mode-hook)
1384       (set-buffer-modified-p nil)
1385       (setq buffer-read-only t)
1386       preview-buffer)))
1387
1388 ;;;###autoload
1389 (defun mime-view-buffer (&optional raw-buffer preview-buffer mother
1390                                    default-keymap-or-function
1391                                    representation-type)
1392   "View RAW-BUFFER in MIME-View mode.
1393 Optional argument PREVIEW-BUFFER is either nil or a name of preview
1394 buffer.
1395 Optional argument DEFAULT-KEYMAP-OR-FUNCTION is nil, keymap or
1396 function.  If it is a keymap, keymap of MIME-View mode will be added
1397 to it.  If it is a function, it will be bound as default binding of
1398 keymap of MIME-View mode.
1399 Optional argument REPRESENTATION-TYPE is representation-type of
1400 message.  It must be nil, `binary' or `cooked'.  If it is nil,
1401 `cooked' is used as default."
1402   (interactive)
1403   (or raw-buffer
1404       (setq raw-buffer (current-buffer)))
1405   (or representation-type
1406       (setq representation-type
1407             (save-excursion
1408               (set-buffer raw-buffer)
1409               (cdr (or (assq major-mode mime-raw-representation-type-alist)
1410                        (assq t mime-raw-representation-type-alist))))))
1411   (if (eq representation-type 'binary)
1412       (setq representation-type 'buffer))
1413   (setq preview-buffer (mime-display-message
1414                         (mime-open-entity representation-type raw-buffer)
1415                         preview-buffer mother default-keymap-or-function))
1416   (or (get-buffer-window preview-buffer)
1417       (let ((r-win (get-buffer-window raw-buffer)))
1418         (if r-win
1419             (set-window-buffer r-win preview-buffer)
1420           (let ((m-win (and mother (get-buffer-window mother))))
1421             (if m-win
1422                 (set-window-buffer m-win preview-buffer)
1423               (switch-to-buffer preview-buffer)))))))
1424
1425 (defun mime-view-mode (&optional mother ctl encoding
1426                                  raw-buffer preview-buffer
1427                                  default-keymap-or-function)
1428   "Major mode for viewing MIME message.
1429
1430 Here is a list of the standard keys for mime-view-mode.
1431
1432 key             feature
1433 ---             -------
1434
1435 u               Move to upper content
1436 p or M-TAB      Move to previous content
1437 n or TAB        Move to next content
1438 SPC             Scroll up or move to next content
1439 M-SPC or DEL    Scroll down or move to previous content
1440 RET             Move to next line
1441 M-RET           Move to previous line
1442 v               Decode current content as `play mode'
1443 e               Decode current content as `extract mode'
1444 C-c C-p         Decode current content as `print mode'
1445 a               Followup to current content.
1446 q               Quit
1447 button-2        Move to point under the mouse cursor
1448                 and decode current content as `play mode'
1449 "
1450   (interactive)
1451   (unless mime-view-redisplay
1452     (save-excursion
1453       (if raw-buffer (set-buffer raw-buffer))
1454       (let ((type
1455              (cdr
1456               (or (assq major-mode mime-raw-representation-type-alist)
1457                   (assq t mime-raw-representation-type-alist)))))
1458         (if (eq type 'binary)
1459             (setq type 'buffer))
1460         (setq mime-message-structure (mime-open-entity type raw-buffer))
1461         (or (mime-entity-content-type mime-message-structure)
1462             (mime-entity-set-content-type mime-message-structure ctl)))
1463       (or (mime-entity-encoding mime-message-structure)
1464           (mime-entity-set-encoding mime-message-structure encoding))))
1465   (mime-display-message mime-message-structure preview-buffer
1466                         mother default-keymap-or-function))
1467
1468
1469 ;;; @@ utility
1470 ;;;
1471
1472 (defun mime-preview-find-boundary-info (&optional with-children)
1473   "Return boundary information of current part.
1474 If WITH-CHILDREN, refer boundary surrounding current part and its branches."
1475   (let (entity
1476         p-beg p-end
1477         entity-node-id len)
1478     (while (and
1479             (null (setq entity
1480                         (get-text-property (point) 'mime-view-entity)))
1481             (> (point) (point-min)))
1482       (backward-char))
1483     (setq p-beg (previous-single-property-change (point) 'mime-view-entity))
1484     (setq entity-node-id (and entity (mime-entity-node-id entity)))
1485     (setq len (length entity-node-id))
1486     (cond ((null p-beg)
1487            (setq p-beg
1488                  (if (eq (next-single-property-change (point-min)
1489                                                       'mime-view-entity)
1490                          (point))
1491                      (point)
1492                    (point-min))))
1493           ((eq (next-single-property-change p-beg 'mime-view-entity)
1494                (point))
1495            (setq p-beg (point))))
1496     (setq p-end (next-single-property-change p-beg 'mime-view-entity))
1497     (cond ((null p-end)
1498            (setq p-end (point-max)))
1499           ((null entity-node-id)
1500            (setq p-end (point-max)))
1501           (with-children
1502            (save-excursion
1503              (catch 'tag
1504                (let (e i)
1505                  (while (setq e
1506                               (next-single-property-change
1507                                (point) 'mime-view-entity))
1508                    (goto-char e)
1509                    (let ((rc (mime-entity-node-id
1510                               (get-text-property (point)
1511                                                  'mime-view-entity))))
1512                      (or (and (>= (setq i (- (length rc) len)) 0)
1513                               (equal entity-node-id (nthcdr i rc)))
1514                          (throw 'tag nil)))
1515                    (setq p-end (or (next-single-property-change
1516                                     (point) 'mime-view-entity)
1517                                    (point-max)))))
1518                (setq p-end (point-max))))))
1519     (vector p-beg p-end entity)))
1520
1521
1522 ;;; @@ playing
1523 ;;;
1524
1525 (autoload 'mime-preview-play-current-entity "mime-play"
1526   "Play current entity." t)
1527
1528 (defun mime-preview-extract-current-entity (&optional ignore-examples)
1529   "Extract current entity into file (maybe).
1530 It decodes current entity to call internal or external method as
1531 \"extract\" mode.  The method is selected from variable
1532 `mime-acting-condition'."
1533   (interactive "P")
1534   (mime-preview-play-current-entity ignore-examples "extract"))
1535
1536 (defun mime-preview-print-current-entity (&optional ignore-examples)
1537   "Print current entity (maybe).
1538 It decodes current entity to call internal or external method as
1539 \"print\" mode.  The method is selected from variable
1540 `mime-acting-condition'."
1541   (interactive "P")
1542   (mime-preview-play-current-entity ignore-examples "print"))
1543
1544
1545 ;;; @@ following
1546 ;;;
1547
1548 (defun mime-preview-follow-current-entity ()
1549   "Write follow message to current entity.
1550 It calls following-method selected from variable
1551 `mime-preview-following-method-alist'."
1552   (interactive)
1553   (let* ((boundary-info (mime-preview-find-boundary-info t))
1554          (p-beg (aref boundary-info 0))
1555          (p-end (aref boundary-info 1))
1556          (entity (aref boundary-info 2))
1557          pb-beg)
1558     (if (or (get-text-property p-beg 'mime-view-entity-body)
1559             (null entity))
1560         (setq pb-beg p-beg)
1561       (setq pb-beg
1562             (next-single-property-change
1563              p-beg 'mime-view-entity-body nil
1564              (or (next-single-property-change p-beg 'mime-view-entity)
1565                  p-end))))
1566     (let* ((mode (mime-preview-original-major-mode 'recursive))
1567            (entity-node-id (and entity (mime-entity-node-id entity)))
1568            (new-name
1569             (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1570            new-buf
1571            (the-buf (current-buffer))
1572            fields)
1573       (save-excursion
1574         (set-buffer (setq new-buf (get-buffer-create new-name)))
1575         (erase-buffer)
1576         (insert ?\n)
1577         (insert-buffer-substring the-buf pb-beg p-end)
1578         (goto-char (point-min))
1579         (let ((current-entity
1580                (if (and entity
1581                         (eq (mime-entity-media-type entity) 'message)
1582                         (eq (mime-entity-media-subtype entity) 'rfc822))
1583                    (car (mime-entity-children entity))
1584                  entity)))
1585           (while (and current-entity
1586                       (if (and (eq (mime-entity-media-type
1587                                     current-entity) 'message)
1588                                (eq (mime-entity-media-subtype
1589                                     current-entity) 'rfc822))
1590                           nil
1591                         (mime-insert-header current-entity fields)
1592                         t))
1593             (setq fields (std11-collect-field-names)
1594                   current-entity (mime-entity-parent current-entity))))
1595         (let ((rest mime-view-following-required-fields-list)
1596               field-name ret)
1597           (while rest
1598             (setq field-name (car rest))
1599             (or (std11-field-body field-name)
1600                 (progn
1601                   (save-excursion
1602                     (set-buffer the-buf)
1603                     (let ((entity (when mime-mother-buffer
1604                                     (set-buffer mime-mother-buffer)
1605                                     (get-text-property (point)
1606                                                        'mime-view-entity))))
1607                       (while (and entity
1608                                   (null (setq ret (mime-entity-fetch-field
1609                                                    entity field-name))))
1610                         (setq entity (mime-entity-parent entity)))))
1611                   (if ret
1612                       (insert (concat field-name ": " ret "\n")))))
1613             (setq rest (cdr rest)))))
1614       (let ((f (cdr (assq mode mime-preview-following-method-alist))))
1615         (if (functionp f)
1616             (funcall f new-buf)
1617           (message
1618            "Sorry, following method for %s is not implemented yet."
1619             mode))))))
1620
1621
1622 ;;; @@ moving
1623 ;;;
1624
1625 (defun mime-preview-move-to-upper ()
1626   "Move to upper entity.
1627 If there is no upper entity, call function `mime-preview-quit'."
1628   (interactive)
1629   (let (cinfo)
1630     (while (null (setq cinfo
1631                        (get-text-property (point) 'mime-view-entity)))
1632       (backward-char))
1633     (let ((r (mime-entity-parent cinfo))
1634           point)
1635       (catch 'tag
1636         (while (setq point (previous-single-property-change
1637                             (point) 'mime-view-entity))
1638           (goto-char point)
1639           (when (eq r (get-text-property (point) 'mime-view-entity))
1640             (if (or (eq mime-preview-move-scroll t)
1641                     (and mime-preview-move-scroll
1642                          (>= point
1643                              (save-excursion
1644                                (move-to-window-line -1)
1645                                (forward-line (* -1 next-screen-context-lines))
1646                                (beginning-of-line)
1647                                (point)))))
1648                 (recenter next-screen-context-lines))
1649             (throw 'tag t)))
1650         (mime-preview-quit)))))
1651
1652 (defun mime-preview-move-to-previous ()
1653   "Move to previous entity.
1654 If there is no previous entity, it calls function registered in
1655 variable `mime-preview-over-to-previous-method-alist'."
1656   (interactive)
1657   (while (and (not (bobp))
1658               (null (get-text-property (point) 'mime-view-entity)))
1659     (backward-char))
1660   (let ((point (previous-single-property-change (point) 'mime-view-entity)))
1661     (if (and point
1662              (>= point (point-min)))
1663         (if (get-text-property (1- point) 'mime-view-entity)
1664             (progn (goto-char point)
1665                    (if
1666                     (or (eq mime-preview-move-scroll t)
1667                         (and mime-preview-move-scroll
1668                              (<= point
1669                                 (save-excursion
1670                                   (move-to-window-line 0)
1671                                   (forward-line next-screen-context-lines)
1672                                   (end-of-line)
1673                                   (point)))))
1674                         (recenter (* -1 next-screen-context-lines))))
1675           (goto-char (1- point))
1676           (mime-preview-move-to-previous))
1677       (let ((f (assq (mime-preview-original-major-mode)
1678                      mime-preview-over-to-previous-method-alist)))
1679         (if f
1680             (funcall (cdr f)))))))
1681
1682 (defun mime-preview-move-to-next ()
1683   "Move to next entity.
1684 If there is no previous entity, it calls function registered in
1685 variable `mime-preview-over-to-next-method-alist'."
1686   (interactive)
1687   (while (and (not (eobp))
1688               (null (get-text-property (point) 'mime-view-entity)))
1689     (forward-char))
1690   (let ((point (next-single-property-change (point) 'mime-view-entity)))
1691     (if (and point
1692              (<= point (point-max)))
1693         (progn
1694           (goto-char point)
1695           (if (null (get-text-property point 'mime-view-entity))
1696               (mime-preview-move-to-next)
1697             (and
1698              (or (eq mime-preview-move-scroll t)
1699                  (and mime-preview-move-scroll
1700                       (>= point
1701                          (save-excursion
1702                            (move-to-window-line -1)
1703                            (forward-line
1704                             (* -1 next-screen-context-lines))
1705                            (beginning-of-line)
1706                            (point)))))
1707                  (recenter next-screen-context-lines))))
1708       (let ((f (assq (mime-preview-original-major-mode)
1709                      mime-preview-over-to-next-method-alist)))
1710         (if f
1711             (funcall (cdr f)))))))
1712
1713 (defun mime-preview-scroll-up-entity (&optional h)
1714   "Scroll up current entity.
1715 If reached to (point-max), it calls function registered in variable
1716 `mime-preview-over-to-next-method-alist'."
1717   (interactive)
1718   (if (eobp)
1719       (let ((f (assq (mime-preview-original-major-mode)
1720                      mime-preview-over-to-next-method-alist)))
1721         (if f
1722             (funcall (cdr f))))
1723     (let ((point
1724            (or (next-single-property-change (point) 'mime-view-entity)
1725                (point-max)))
1726           (bottom (window-end (selected-window))))
1727       (if (and (not h)
1728                (> bottom point))
1729           (progn (goto-char point)
1730                  (recenter next-screen-context-lines))
1731         (condition-case nil
1732             (scroll-up h)
1733           (end-of-buffer
1734            (goto-char (point-max))))))))
1735
1736 (defun mime-preview-scroll-down-entity (&optional h)
1737   "Scroll down current entity.
1738 If reached to (point-min), it calls function registered in variable
1739 `mime-preview-over-to-previous-method-alist'."
1740   (interactive)
1741   (if (bobp)
1742       (let ((f (assq (mime-preview-original-major-mode)
1743                      mime-preview-over-to-previous-method-alist)))
1744         (if f
1745             (funcall (cdr f))))
1746     (let ((point
1747            (or (previous-single-property-change (point) 'mime-view-entity)
1748                (point-min)))
1749           (top (window-start (selected-window))))
1750       (if (and (not h)
1751                (< top point))
1752           (progn (goto-char point)
1753                  (recenter (* -1 next-screen-context-lines)))
1754         (condition-case nil
1755             (scroll-down h)
1756           (beginning-of-buffer
1757            (goto-char (point-min))))))))
1758
1759 (defun mime-preview-next-line-entity (&optional lines)
1760   "Scroll up one line (or prefix LINES lines).
1761 If LINES is negative, scroll down LINES lines."
1762   (interactive "p")
1763   (mime-preview-scroll-up-entity (or lines 1)))
1764
1765 (defun mime-preview-previous-line-entity (&optional lines)
1766   "Scrroll down one line (or prefix LINES lines).
1767 If LINES is negative, scroll up LINES lines."
1768   (interactive "p")
1769   (mime-preview-scroll-down-entity (or lines 1)))
1770
1771
1772 ;;; @@ display
1773 ;;;
1774
1775 (defun mime-view-guess-encoding (entity situation)
1776   (or (cdr (assq '*encoding situation))
1777       (cdr (assq 'encoding situation))
1778       (mime-entity-encoding entity)
1779       "7bit"))
1780
1781 (defun mime-view-read-encoding (entity situation)
1782   (let* ((default-encoding
1783            (mime-view-guess-encoding entity situation))
1784          (encoding
1785           (completing-read
1786            "Content Transfer Encoding: "
1787            (mime-encoding-alist) nil t default-encoding)))
1788     (unless (or (string= encoding "")
1789                 (string= encoding default-encoding))
1790       encoding)))
1791
1792 (defun mime-view-guess-charset (entity situation)
1793   (or (static-if (fboundp 'coding-system-to-mime-charset)
1794           ;; might be overridden by `universal-coding-system-argument'.
1795           (and coding-system-for-read
1796                (coding-system-to-mime-charset coding-system-for-read)))
1797       (cdr (assq '*charset situation))
1798       (cdr (assq 'charset situation))
1799       (let ((charset (cdr (assoc "charset" (mime-entity-parameters entity)))))
1800         (if charset
1801             (intern (downcase charset))))
1802       default-mime-charset))
1803
1804 (defun mime-view-read-charset (entity situation)
1805   (static-if (featurep 'mule)
1806       (let* ((default-charset
1807                (mime-view-guess-charset entity situation))
1808              (charset
1809               (intern (completing-read "MIME-charset: "
1810                                        (mapcar
1811                                         (lambda (sym)
1812                                           (list (symbol-name sym)))
1813                                         (mime-charset-list))
1814                                        nil t
1815                                        (symbol-name default-charset)))))
1816         (unless (eq charset default-charset)
1817           charset))
1818     default-charset))
1819
1820 (defun mime-preview-toggle-display (type &optional display)
1821   (let ((situation (mime-preview-find-boundary-info t))
1822         (sym (intern (concat "*" (symbol-name type))))
1823         entity p-beg p-end encoding charset)
1824     (setq p-beg (aref situation 0)
1825           p-end (aref situation 1)
1826           entity (aref situation 2)
1827           situation (get-text-property p-beg 'mime-view-situation))
1828     (cond ((eq display 'invisible)
1829            (setq display nil))
1830           (display)
1831           (t
1832            (setq display
1833                  (memq (cdr (or (assq sym situation)
1834                                 (assq type situation)))
1835                        '(nil invisible)))))
1836     (setq situation (put-alist sym (if display
1837                                        'visible
1838                                      'invisible)
1839                                situation))
1840     (when (and current-prefix-arg
1841                (eq (cdr (assq sym situation)) 'visible))
1842       (if (setq encoding (mime-view-read-encoding entity situation))
1843           (setq situation (put-alist '*encoding encoding situation)))
1844       (if (setq charset (mime-view-read-charset entity situation))
1845           (setq situation (put-alist '*charset charset situation))))
1846     (save-excursion
1847       (let ((inhibit-read-only t))
1848         (delete-region p-beg p-end)
1849         (mime-display-entity entity situation)))
1850     (let ((ret (assoc situation mime-preview-situation-example-list)))
1851       (if ret
1852           (setcdr ret (1+ (cdr ret)))
1853         (add-to-list 'mime-preview-situation-example-list
1854                      (cons situation 0))))))
1855
1856 (defun mime-preview-toggle-header (&optional force-visible)
1857   (interactive "P")
1858   (mime-preview-toggle-display 'header force-visible))
1859
1860 (defun mime-preview-toggle-content (&optional force-visible)
1861   (interactive "P")
1862   (mime-preview-toggle-display 'body force-visible))
1863
1864 (defun mime-preview-show-header ()
1865   (interactive)
1866   (mime-preview-toggle-display 'header 'visible))
1867
1868 (defun mime-preview-show-content ()
1869   (interactive)
1870   (mime-preview-toggle-display 'body 'visible))
1871
1872 (defun mime-preview-hide-header ()
1873   (interactive)
1874   (mime-preview-toggle-display 'header 'invisible))
1875
1876 (defun mime-preview-hide-content ()
1877   (interactive)
1878   (mime-preview-toggle-display 'body 'invisible))
1879
1880
1881 ;;; @@ quitting
1882 ;;;
1883
1884 (defun mime-preview-quit ()
1885   "Quit from MIME-preview buffer.
1886 It calls function registered in variable
1887 `mime-preview-quitting-method-alist'."
1888   (interactive)
1889   (let ((r (assq (mime-preview-original-major-mode)
1890                  mime-preview-quitting-method-alist)))
1891     (if r
1892         (funcall (cdr r)))))
1893
1894 (defun mime-preview-kill-buffer ()
1895   (interactive)
1896   (kill-buffer (current-buffer)))
1897
1898
1899 ;;; @ end
1900 ;;;
1901
1902 (provide 'mime-view)
1903
1904 (eval-when-compile
1905   (setq mime-situation-examples-file nil)
1906   ;; to avoid to read situation-examples-file at compile time.
1907   )
1908
1909 (mime-view-read-situation-examples-file)
1910
1911 ;;; mime-view.el ends here