* Sync up with semi-1_13_4.
[elisp/semi.git] / mime-play.el
index b163641..6e1d206 100644 (file)
@@ -1,6 +1,6 @@
 ;;; mime-play.el --- Playback processing module for mime-view.el
 
-;; Copyright (C) 1994,1995,1996,1997,1998 Free Software Foundation, Inc.
+;; Copyright (C) 1994,1995,1996,1997,1998,1999 Free Software Foundation, Inc.
 
 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
 ;; Created: 1995/9/26 (separated from tm-view.el)
 (require 'mime-view)
 (require 'alist)
 (require 'filename)
+(require 'ccl)
 
 (eval-when-compile
-  (require 'mime-text)
   (condition-case nil
       (require 'bbdb)
     (error (defvar bbdb-buffer-name nil)))
   )
 
-(defvar mime-acting-situation-examples nil)
+(defvar mime-acting-situation-example-list nil)
+
+(defvar mime-acting-situation-example-list-max-size 16)
 
 (defun mime-save-acting-situation-examples ()
   (let* ((file mime-acting-situation-examples-file)
           (erase-buffer)
           (insert ";;; " (file-name-nondirectory file) "\n")
           (insert "\n;; This file is generated automatically by "
-                  mime-view-version-string "\n\n")
+                  mime-view-version "\n\n")
          (insert ";;; Code:\n\n")
-         (pp `(setq mime-acting-situation-examples
-                    ',mime-acting-situation-examples)
+         (pp `(setq mime-acting-situation-example-list
+                    ',mime-acting-situation-example-list)
              (current-buffer))
          (insert "\n;;; "
                   (file-name-nondirectory file)
 
 (add-hook 'kill-emacs-hook 'mime-save-acting-situation-examples)
 
-  
+(defun mime-reduce-acting-situation-examples ()
+  (let ((len (length mime-acting-situation-example-list))
+       i ir ic j jr jc ret
+       dest d-i d-j
+       (max-sim 0) sim
+       min-det-ret det-ret
+       min-det-org det-org
+       min-freq freq)
+    (setq i 0
+         ir mime-acting-situation-example-list)
+    (while (< i len)
+      (setq ic (car ir)
+           j 0
+           jr mime-acting-situation-example-list)
+      (while (< j len)
+       (unless (= i j)
+         (setq jc (car jr))
+         (setq ret (mime-compare-situation-with-example (car ic)(car jc))
+               sim (car ret)
+               det-ret (+ (length (car ic))(length (car jc)))
+               det-org (length (cdr ret))
+               freq (+ (cdr ic)(cdr jc)))
+         (cond ((< max-sim sim)
+                (setq max-sim sim
+                      min-det-ret det-ret
+                      min-det-org det-org
+                      min-freq freq
+                      d-i i
+                      d-j j
+                      dest (cons (cdr ret) freq))
+                )
+               ((= max-sim sim)
+                (cond ((> min-det-ret det-ret)
+                       (setq min-det-ret det-ret
+                             min-det-org det-org
+                             min-freq freq
+                             d-i i
+                             d-j j
+                             dest (cons (cdr ret) freq))
+                       )
+                      ((= min-det-ret det-ret)
+                       (cond ((> min-det-org det-org)
+                              (setq min-det-org det-org
+                                    min-freq freq
+                                    d-i i
+                                    d-j j
+                                    dest (cons (cdr ret) freq))
+                              )
+                             ((= min-det-org det-org)
+                              (cond ((> min-freq freq)
+                                     (setq min-freq freq
+                                           d-i i
+                                           d-j j
+                                           dest (cons (cdr ret) freq))
+                                     ))
+                              ))
+                       ))
+                ))
+         )
+       (setq jr (cdr jr)
+             j (1+ j)))
+      (setq ir (cdr ir)
+           i (1+ i)))
+    (if (> d-i d-j)
+       (setq i d-i
+             d-i d-j
+             d-j i))
+    (setq jr (nthcdr (1- d-j) mime-acting-situation-example-list))
+    (setcdr jr (cddr jr))
+    (if (= d-i 0)
+       (setq mime-acting-situation-example-list
+             (cdr mime-acting-situation-example-list))
+      (setq ir (nthcdr (1- d-i) mime-acting-situation-example-list))
+      (setcdr ir (cddr ir))
+      )
+    (if (setq ir (assoc (car dest) mime-acting-situation-example-list))
+       (setcdr ir (+ (cdr ir)(cdr dest)))
+      (setq mime-acting-situation-example-list
+           (cons dest mime-acting-situation-example-list))
+      )))
+
+
 ;;; @ content decoder
 ;;;
 
-(defvar mime-preview-after-decoded-position nil)
-
-(defun mime-preview-play-current-entity (&optional mode)
+;;;###autoload
+(defun mime-preview-play-current-entity (&optional ignore-examples mode)
   "Play current entity.
 It decodes current entity to call internal or external method.  The
 method is selected from variable `mime-acting-condition'.
+If IGNORE-EXAMPLES (C-u prefix) is specified, this function ignores
+`mime-acting-situation-example-list'.
 If MODE is specified, play as it.  Default MODE is \"play\"."
-  (interactive (list "play"))
+  (interactive "P")
   (let ((entity (get-text-property (point) 'mime-view-entity)))
     (if entity
-       (let ((the-buf (current-buffer))
-             (raw-buffer (mime-entity-buffer entity)))
-         (setq mime-preview-after-decoded-position (point))
-         (set-buffer raw-buffer)
-         (mime-raw-play-entity entity mode)
-         (when (eq (current-buffer) raw-buffer)
-           (set-buffer the-buf)
-           (goto-char mime-preview-after-decoded-position)
-           )))))
+       (let ((situation (list (cons 'mode (or mode "play")))))
+         (if ignore-examples
+             (setq situation
+                   (cons (cons 'ignore-examples ignore-examples)
+                         situation)))
+         (mime-play-entity entity situation)
+         ))))
 
 (defun mime-sort-situation (situation)
   (sort situation
@@ -121,42 +203,100 @@ If MODE is specified, play as it.  Default MODE is \"play\"."
              )))
   )
 
-(defsubst mime-delq-null-situation (situations field)
+(defsubst mime-delq-null-situation (situations field
+                                              &optional ignored-value)
   (let (dest)
     (while situations
-      (let ((situation (car situations)))
-       (if (assq field situation)
-           (setq dest (cons situation dest))
-         ))
+      (let* ((situation (car situations))
+            (cell (assq field situation)))
+       (if cell
+           (or (eq (cdr cell) ignored-value)
+               (setq dest (cons situation dest))
+               )))
       (setq situations (cdr situations)))
     dest))
 
-(defun mime-raw-play-entity (entity &optional mode situation)
+(defun mime-compare-situation-with-example (situation example)
+  (let ((example (copy-alist example))
+       (match 0))
+    (while situation
+      (let* ((cell (car situation))
+            (key (car cell))
+            (ecell (assoc key example)))
+       (when ecell
+         (if (equal cell ecell)
+             (setq match (1+ match))
+           (setq example (delq ecell example))
+           ))
+       )
+      (setq situation (cdr situation))
+      )
+    (cons match example)
+    ))
+
+;;;###autoload
+(defun mime-play-entity (entity &optional situation ignored-method)
   "Play entity specified by ENTITY.
 It decodes the entity to call internal or external method.  The method
 is selected from variable `mime-acting-condition'.  If MODE is
 specified, play as it.  Default MODE is \"play\"."
   (let (method ret)
-    (or situation
-       (setq situation (mime-entity-situation entity)))
-    (if mode
-       (setq situation (cons (cons 'mode mode) situation))
-      )
-    (setq ret
-         (or (ctree-match-calist mime-acting-situation-examples situation)
-             (ctree-match-calist-partially mime-acting-situation-examples
-                                           situation)
-             situation))
     (setq ret
-         (or (mime-delq-null-situation
-              (ctree-find-calist mime-acting-condition ret
-                                 mime-view-find-every-acting-situation)
-              'method)
-             (mime-delq-null-situation
-              (ctree-find-calist mime-acting-condition situation
-                                 mime-view-find-every-acting-situation)
-              'method)
-             ))
+         (mime-delq-null-situation
+          (ctree-find-calist mime-acting-condition
+                             (mime-entity-situation entity situation)
+                             mime-view-find-every-acting-situation)
+          'method ignored-method))
+    (or (assq 'ignore-examples situation)
+       (if (cdr ret)
+           (let ((rest ret)
+                 (max-score 0)
+                 (max-escore 0)
+                 max-examples
+                 max-situations)
+             (while rest
+               (let ((situation (car rest))
+                     (examples mime-acting-situation-example-list))
+                 (while examples
+                   (let* ((ret
+                           (mime-compare-situation-with-example
+                            situation (caar examples)))
+                          (ret-score (car ret)))
+                     (cond ((> ret-score max-score)
+                            (setq max-score ret-score
+                                  max-escore (cdar examples)
+                                  max-examples (list (cdr ret))
+                                  max-situations (list situation))
+                            )
+                           ((= ret-score max-score)
+                            (cond ((> (cdar examples) max-escore)
+                                   (setq max-escore (cdar examples)
+                                         max-examples (list (cdr ret))
+                                         max-situations (list situation))
+                                   )
+                                  ((= (cdar examples) max-escore)
+                                   (setq max-examples
+                                         (cons (cdr ret) max-examples))
+                                   (or (member situation max-situations)
+                                       (setq max-situations
+                                             (cons situation max-situations)))
+                                   )))))
+                   (setq examples (cdr examples))))
+               (setq rest (cdr rest)))
+             (when max-situations
+               (setq ret max-situations)
+               (while max-examples
+                 (let* ((example (car max-examples))
+                        (cell
+                         (assoc example mime-acting-situation-example-list)))
+                   (if cell
+                       (setcdr cell (1+ (cdr cell)))
+                     (setq mime-acting-situation-example-list
+                           (cons (cons example 0)
+                                 mime-acting-situation-example-list))
+                     ))
+                 (setq max-examples (cdr max-examples))
+                 )))))
     (cond ((cdr ret)
           (setq ret (select-menu-alist
                      "Methods"
@@ -168,7 +308,7 @@ specified, play as it.  Default MODE is \"play\"."
                                  situation)))
                              ret)))
           (setq ret (mime-sort-situation ret))
-          (ctree-set-calist-strictly 'mime-acting-situation-examples ret)
+          (add-to-list 'mime-acting-situation-example-list (cons ret 0))
           )
          (t
           (setq ret (car ret))
@@ -197,34 +337,28 @@ specified, play as it.  Default MODE is \"play\"."
 (defvar mime-mailcap-method-filename-alist nil)
 
 (defun mime-activate-mailcap-method (entity situation)
-  (save-excursion
-    (save-restriction
-      (let ((start (mime-entity-point-min entity))
-           (end (mime-entity-point-max entity)))
-       (narrow-to-region start end)
-       (goto-char start)
-       (let ((method (cdr (assoc 'method situation)))
-             (name (mime-entity-safe-filename entity)))
-         (setq name
-               (if (and name (not (string= name "")))
-                   (expand-file-name name mime-temp-directory)
-                 (make-temp-name
-                  (expand-file-name "EMI" mime-temp-directory))
-                 ))
-          (mime-write-entity-content entity name)
-         (message "External method is starting...")
-         (let ((process
-                (let ((command
-                       (mailcap-format-command
-                        method
-                        (cons (cons 'filename name) situation))))
-                  (start-process command mime-echo-buffer-name
-                                 shell-file-name shell-command-switch command)
-                  )))
-           (set-alist 'mime-mailcap-method-filename-alist process name)
-           (set-process-sentinel process 'mime-mailcap-method-sentinel)
-           )
-         )))))
+  (let ((method (cdr (assoc 'method situation)))
+       (name (mime-entity-safe-filename entity)))
+    (setq name
+         (if (and name (not (string= name "")))
+             (expand-file-name name temporary-file-directory)
+           (make-temp-name
+            (expand-file-name "EMI" temporary-file-directory))
+           ))
+    (mime-write-entity-content entity name)
+    (message "External method is starting...")
+    (let ((process
+          (let ((command
+                 (mailcap-format-command
+                  method
+                  (cons (cons 'filename name) situation))))
+            (start-process command mime-echo-buffer-name
+                           shell-file-name shell-command-switch command)
+            )))
+      (set-alist 'mime-mailcap-method-filename-alist process name)
+      (set-process-sentinel process 'mime-mailcap-method-sentinel)
+      )
+    ))
 
 (defun mime-mailcap-method-sentinel (process event)
   (let ((file (cdr (assq process mime-mailcap-method-filename-alist))))
@@ -234,7 +368,8 @@ specified, play as it.  Default MODE is \"play\"."
   (remove-alist 'mime-mailcap-method-filename-alist process)
   (message (format "%s %s" process event)))
 
-(defvar mime-echo-window-is-shared-with-bbdb t
+(defvar mime-echo-window-is-shared-with-bbdb
+  (module-installed-p 'bbdb)
   "*If non-nil, mime-echo window is shared with BBDB window.")
 
 (defvar mime-echo-window-height
@@ -252,23 +387,23 @@ window.")
   "Show mime-echo buffer to display MIME-playing information."
   (get-buffer-create mime-echo-buffer-name)
   (let ((the-win (selected-window))
-       (win (get-buffer-window mime-echo-buffer-name))
+       (win (get-buffer-window mime-echo-buffer-name)))
+    (unless win
+      (unless (and mime-echo-window-is-shared-with-bbdb
+                  (condition-case nil
+                      (setq win (get-buffer-window bbdb-buffer-name))
+                    (error nil)))
+       (select-window (get-buffer-window (or mime-preview-buffer
+                                             (current-buffer))))
+       (setq win (split-window-vertically
+                  (- (window-height)
+                     (if (functionp mime-echo-window-height)
+                         (funcall mime-echo-window-height)
+                       mime-echo-window-height)
+                     )))
        )
-    (or win
-       (if (and mime-echo-window-is-shared-with-bbdb
-                (boundp 'bbdb-buffer-name)
-                (setq win (get-buffer-window bbdb-buffer-name))
-                )
-           (set-window-buffer win mime-echo-buffer-name)
-         (select-window (get-buffer-window mime-preview-buffer))
-         (setq win (split-window-vertically
-                    (- (window-height)
-                       (if (functionp mime-echo-window-height)
-                           (funcall mime-echo-window-height)
-                         mime-echo-window-height)
-                       )))
-         (set-window-buffer win mime-echo-buffer-name)
-         ))
+      (set-window-buffer win mime-echo-buffer-name)
+      )
     (select-window win)
     (goto-char (point-max))
     (if forms
@@ -337,54 +472,44 @@ window.")
 ;;; @ file detection
 ;;;
 
-(defvar mime-file-content-type-alist
-  '(("JPEG"            image jpeg)
-    ("GIF"             image gif)
-    ("Standard MIDI"   audio midi)
+(defvar mime-magic-type-alist
+  '(("^\377\330\377[\340\356]..JFIF"   image jpeg)
+    ("^\211PNG"                                image png)
+    ("^GIF8[79]"                       image gif)
+    ("^II\\*\000"                      image tiff)
+    ("^MM\000\\*"                      image tiff)
+    ("^MThd"                           audio midi)
+    ("^\000\000\001\263"               video mpeg)
     )
-  "*Alist of \"file\" output patterns vs. corresponding media-types.
+  "*Alist of regexp about magic-number vs. corresponding media-types.
 Each element looks like (REGEXP TYPE SUBTYPE).
-REGEXP is pattern for \"file\" command output.
+REGEXP is a regular expression to match against the beginning of the
+content of entity.
 TYPE is symbol to indicate primary type of media-type.
 SUBTYPE is symbol to indicate subtype of media-type.")
 
 (defun mime-detect-content (entity situation)
-  (let ((beg (mime-entity-point-min entity))
-       (end (mime-entity-point-max entity)))
-    (goto-char beg)
-    (let* ((name (save-restriction
-                  (narrow-to-region beg end)
-                  (mime-entity-safe-filename entity)
-                  ))
-          (encoding (or (cdr (assq 'encoding situation)) "7bit"))
-          (filename (if (and name (not (string-equal name "")))
-                        (expand-file-name name mime-temp-directory)
-                      (make-temp-name
-                       (expand-file-name "EMI" mime-temp-directory)))))
-      (mime-write-decoded-region (mime-entity-body-start entity) end
-                                filename encoding)
-      (let (type subtype)
-       (with-temp-buffer
-         (call-process "file" nil t nil filename)
-         (goto-char (point-min))
-         (if (search-forward (concat filename ": ") nil t)
-             (let ((rest mime-file-content-type-alist))
-               (while (not (let ((cell (car rest)))
-                             (if cell
-                                 (if (looking-at (car cell))
-                                     (setq type (nth 1 cell)
-                                           subtype (nth 2 cell))
-                                   )
-                               t)))
-                 (setq rest (cdr rest))))))
-       (if type
-           (mime-raw-play-entity
-            entity "play"
-            (put-alist 'type type
-                       (put-alist 'subtype subtype
-                                  (mime-entity-situation entity))))
-         ))
-      )))
+  (let (type subtype)
+    (let ((mdata (mime-entity-content entity))
+         (rest mime-magic-type-alist))
+      (while (not (let ((cell (car rest)))
+                   (if cell
+                       (if (string-match (car cell) mdata)
+                           (setq type (nth 1 cell)
+                                 subtype (nth 2 cell))
+                         )
+                     t)))
+       (setq rest (cdr rest))))
+    (if type
+       (mime-play-entity
+        entity
+        (put-alist 'type type
+                   (put-alist 'subtype subtype
+                              (del-alist 'method
+                                         (copy-alist situation))))
+        'mime-detect-content)
+      ))
+  )
 
 
 ;;; @ mail/news message
@@ -405,13 +530,11 @@ It is registered to variable `mime-preview-quitting-method-alist'."
 (defun mime-view-message/rfc822 (entity situation)
   (let* ((new-name
          (format "%s-%s" (buffer-name) (mime-entity-number entity)))
-        (mother mime-preview-buffer)
+        (mother (current-buffer))
         (children (car (mime-entity-children entity))))
     (set-buffer (get-buffer-create new-name))
     (erase-buffer)
-    (insert-buffer-substring (mime-entity-buffer children)
-                            (mime-entity-point-min children)
-                            (mime-entity-point-max children))
+    (mime-insert-entity children)
     (setq mime-message-structure children)
     (setq major-mode 'mime-show-message-mode)
     (mime-view-buffer (current-buffer) nil mother
@@ -423,15 +546,14 @@ It is registered to variable `mime-preview-quitting-method-alist'."
 ;;;
 
 (defun mime-store-message/partial-piece (entity cal)
-  (goto-char (mime-entity-point-min entity))
   (let* ((root-dir
          (expand-file-name
-          (concat "m-prts-" (user-login-name)) mime-temp-directory))
+          (concat "m-prts-" (user-login-name)) temporary-file-directory))
         (id (cdr (assoc "id" cal)))
         (number (cdr (assoc "number" cal)))
         (total (cdr (assoc "total" cal)))
         file
-        (mother mime-preview-buffer)
+        (mother (current-buffer))
         )
     (or (file-exists-p root-dir)
        (make-directory root-dir)
@@ -452,7 +574,7 @@ It is registered to variable `mime-preview-quitting-method-alist'."
            (erase-buffer)
            (as-binary-input-file (insert-file-contents file))
            (setq major-mode 'mime-show-message-mode)
-           (mime-view-mode mother)
+           (mime-view-buffer (current-buffer) nil mother)
            )
          (set-window-buffer pwin
                             (save-excursion
@@ -522,11 +644,10 @@ It is registered to variable `mime-preview-quitting-method-alist'."
                       ))
                (save-window-excursion
                  (setq major-mode 'mime-show-message-mode)
-                 (mime-view-mode mother)
+                 (mime-view-buffer (current-buffer) nil mother)
                  )
                (let ((pwin (or (get-buffer-window mother)
-                               (get-largest-window)
-                               ))
+                               (get-largest-window)))
                      (pbuf (save-excursion
                              (set-buffer full-buf)
                              mime-preview-buffer)))
@@ -563,7 +684,7 @@ It is registered to variable `mime-preview-quitting-method-alist'."
     (search-forward name)
     ))
 
-(defvar mime-raw-browse-url-function (function mime-browse-url))
+(defvar mime-raw-browse-url-function mime-browse-url-function)
 
 (defun mime-view-message/external-url (entity cal)
   (let ((url (cdr (assoc "url" cal))))
@@ -574,25 +695,50 @@ It is registered to variable `mime-preview-quitting-method-alist'."
 ;;; @ rot13-47
 ;;;
 
+(define-ccl-program translate-string
+  '(4
+    (loop
+     (read-multibyte-character r1 r2)
+     (translate-character r0 r1 r2)
+     (write-multibyte-character r1 r2)
+     (repeat))))
+
 (defun mime-view-caesar (entity situation)
   "Internal method for mime-view to display ROT13-47-48 message."
-  (let* ((new-name (format "%s-%s" (buffer-name)
-                          (mime-entity-number entity)))
-        (mother mime-preview-buffer))
-    (let ((pwin (or (get-buffer-window mother)
-                   (get-largest-window)))
-         (buf (get-buffer-create new-name)))
-      (set-window-buffer pwin buf)
-      (set-buffer buf)
-      (select-window pwin)
+  (let ((buf (get-buffer-create
+             (format "%s-%s" (buffer-name) (mime-entity-number entity)))))
+    (with-current-buffer buf
+      (setq buffer-read-only nil)
+      (erase-buffer)
+      (let ((enable-character-translation nil))
+       (mime-insert-text-content entity))
+      (mule-caesar-region (point-min) (point-max))
+      (let ((str (buffer-string))
+           (status (make-vector 9 nil))
+           (table
+            (catch 'tbl
+              (let ((i 0) e)
+                (while (and (< i (length translation-table-vector))
+                            (setq e (aref translation-table-vector i)))
+                  (if (eq (cdr e) standard-translation-table-for-decode)
+                      (throw 'tbl i))
+                  (setq i (1+ i)))
+                nil))))
+       (when table
+         (aset status 0 table)
+         (delete-region (point-min) (point-max))
+         (insert (ccl-execute-on-string
+                  'translate-string
+                  status
+                  str))))
+      (set-buffer-modified-p nil)
       )
-    (setq buffer-read-only nil)
-    (erase-buffer)
-    (mime-text-insert-decoded-body entity)
-    (mule-caesar-region (point-min) (point-max))
-    (set-buffer-modified-p nil)
-    (set-buffer mother)
-    (view-buffer new-name)
+    (let ((win (get-buffer-window (current-buffer))))
+      (or (eq (selected-window) win)
+         (select-window (or win (get-largest-window)))
+         ))
+    (view-buffer buf)
+    (goto-char (point-min))
     ))
 
 
@@ -611,8 +757,15 @@ It is registered to variable `mime-preview-quitting-method-alist'."
            (insert-file-contents file)
            (eval-buffer)
            ;; format check
-           (or (eq (car mime-acting-situation-examples) 'type)
-               (setq mime-acting-situation-examples nil))
+           (condition-case nil
+               (let ((i 0))
+                 (while (and (> (length mime-acting-situation-example-list)
+                                mime-acting-situation-example-list-max-size)
+                             (< i 16))
+                   (mime-reduce-acting-situation-examples)
+                   (setq i (1+ i))
+                   ))
+             (error (setq mime-acting-situation-example-list nil)))
            )
        (kill-buffer buffer))))