Added Gnus pkg subtree

[packages] / xemacs-packages / gnus / lisp / mm-archive.el

diff --git a/xemacs-packages/gnus/lisp/mm-archive.el b/xemacs-packages/gnus/lisp/mm-archive.el
new file mode 100644 (file)
index 0000000..45dbd90
--- /dev/null
+++ b/xemacs-packages/gnus/lisp/mm-archive.el
@@ -0,0 +1,106 @@
+;;; mm-archive.el --- Functions for parsing archive files as MIME
+
+;; Copyright (C) 2012-2016 Free Software Foundation, Inc.
+
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'mm-decode)
+(autoload 'gnus-recursive-directory-files "gnus-util")
+(autoload 'mailcap-extension-to-mime "mailcap")
+
+(defvar mm-archive-decoders
+  '(("application/ms-tnef" t "tnef" "-f" "-" "-C")
+    ("application/zip" nil "unzip" "-j" "-x" "%f" "-d")
+    ("application/x-gtar-compressed" nil "tar" "xzf" "-" "-C")
+    ("application/x-tar" nil "tar" "xf" "-" "-C")))
+
+(defun mm-archive-decoders () mm-archive-decoders)
+
+(defun mm-dissect-archive (handle)
+  (let ((decoder (cddr (assoc (car (mm-handle-type handle))
+                             mm-archive-decoders)))
+       (dir (mm-make-temp-file
+             (expand-file-name "emm." mm-tmp-directory) 'dir)))
+    (set-file-modes dir #o700)
+    (unwind-protect
+       (progn
+         (mm-with-unibyte-buffer
+           (mm-insert-part handle)
+           (if (member "%f" decoder)
+               (let ((file (expand-file-name "mail.zip" dir)))
+                 (write-region (point-min) (point-max) file nil 'silent)
+                 (setq decoder (copy-sequence decoder))
+                 (setcar (member "%f" decoder) file)
+                 (apply 'call-process (car decoder) nil nil nil
+                        (append (cdr decoder) (list dir)))
+                 (delete-file file))
+             (apply 'call-process-region (point-min) (point-max) (car decoder)
+                    nil (get-buffer-create "*tnef*")
+                    nil (append (cdr decoder) (list dir)))))
+         `("multipart/mixed"
+           ,handle
+           ,@(mm-archive-list-files (gnus-recursive-directory-files dir))))
+      (delete-directory dir t))))
+
+(defun mm-archive-list-files (files)
+  (let ((handles nil)
+       type disposition)
+    (dolist (file files)
+      (with-temp-buffer
+       (when (string-match "\\.\\([^.]+\\)$" file)
+         (setq type (mailcap-extension-to-mime (match-string 1 file))))
+       (unless type
+         (setq type "application/octet-stream"))
+       (setq disposition
+             (if (string-match "^image/\\|^text/" type)
+                 "inline"
+               "attachment"))
+       (insert (format "Content-type: %s\n" type))
+       (insert "Content-Transfer-Encoding: 8bit\n\n")
+       (insert-file-contents file)
+       (push
+        (mm-make-handle (mm-copy-to-buffer)
+                        (list type)
+                        '8bit nil
+                        `(,disposition (filename . ,file))
+                        nil nil nil)
+        handles)))
+    handles))
+
+(defun mm-archive-dissect-and-inline (handle)
+  (let ((start (point-marker)))
+    (save-restriction
+      (narrow-to-region (point) (point))
+      (dolist (handle (cddr (mm-dissect-archive handle)))
+       (goto-char (point-max))
+       (mm-display-inline handle))
+      (goto-char (point-max))
+      (mm-handle-set-undisplayer
+       handle
+       `(lambda ()
+         (let ((inhibit-read-only t)
+               (end ,(point-marker)))
+           (remove-images ,start end)
+           (delete-region ,start end)))))))
+
+(provide 'mm-archive)
+
+;; mm-archive.el ends here