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authorGerd Moellmann <gerd@gnu.org>2000-09-19 13:40:08 +0000
committerGerd Moellmann <gerd@gnu.org>2000-09-19 13:40:08 +0000
commitc113de23613952ed67a3bca79363b30ab7e406c3 (patch)
treefd8063340169da2af53fa73046debd7a220904ac /lisp/gnus/mm-uu.el
parent16409b0bb832ae376894cbad5892bf7623caeaaf (diff)
downloademacs-c113de23613952ed67a3bca79363b30ab7e406c3.tar.gz
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+;;; mm-uu.el -- Return uu stuffs as mm handles
+;; Copyright (c) 1998, 1999, 2000 Free Software Foundation, Inc.
+
+;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
+;; Keywords: postscript uudecode binhex shar forward news
+
+;; 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 2, 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; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+
+;;; Code:
+
+(eval-when-compile (require 'cl))
+(require 'mail-parse)
+(require 'nnheader)
+(require 'mm-decode)
+(require 'mailcap)
+
+(eval-and-compile
+ (autoload 'binhex-decode-region "binhex")
+ (autoload 'binhex-decode-region-external "binhex")
+ (autoload 'uudecode-decode-region "uudecode")
+ (autoload 'uudecode-decode-region-external "uudecode"))
+
+(defun mm-uu-copy-to-buffer (from to)
+ "Copy the contents of the current buffer to a fresh buffer."
+ (save-excursion
+ (let ((obuf (current-buffer)))
+ (set-buffer (generate-new-buffer " *mm-uu*"))
+ (insert-buffer-substring obuf from to)
+ (current-buffer))))
+
+;;; postscript
+
+(defconst mm-uu-postscript-begin-line "^%!PS-")
+(defconst mm-uu-postscript-end-line "^%%EOF$")
+
+(defconst mm-uu-uu-begin-line "^begin[ \t]+[0-7][0-7][0-7][ \t]+")
+(defconst mm-uu-uu-end-line "^end[ \t]*$")
+
+(defcustom mm-uu-decode-function 'uudecode-decode-region
+ "*Function to uudecode.
+Internal function is done in elisp by default, therefore decoding may
+appear to be horribly slow . You can make Gnus use the external Unix
+decoder, such as uudecode."
+ :type '(choice (item :tag "internal" uudecode-decode-region)
+ (item :tag "external" uudecode-decode-region-external))
+ :group 'gnus-article-mime)
+
+(defconst mm-uu-binhex-begin-line
+ "^:...............................................................$")
+(defconst mm-uu-binhex-end-line ":$")
+
+(defcustom mm-uu-binhex-decode-function 'binhex-decode-region
+ "*Function to binhex decode.
+Internal function is done in elisp by default, therefore decoding may
+appear to be horribly slow . You can make Gnus use the external Unix
+decoder, such as hexbin."
+ :type '(choice (item :tag "internal" binhex-decode-region)
+ (item :tag "external" binhex-decode-region-external))
+ :group 'gnus-article-mime)
+
+(defconst mm-uu-shar-begin-line "^#! */bin/sh")
+(defconst mm-uu-shar-end-line "^exit 0\\|^$")
+
+;;; Thanks to Edward J. Sabol <sabol@alderaan.gsfc.nasa.gov> and
+;;; Peter von der Ah\'e <pahe@daimi.au.dk>
+(defconst mm-uu-forward-begin-line "^-+ \\(Start of \\)?Forwarded message")
+(defconst mm-uu-forward-end-line "^-+ End \\(of \\)?forwarded message")
+
+(defvar mm-uu-begin-line nil)
+
+(defconst mm-uu-identifier-alist
+ '((?% . postscript) (?b . uu) (?: . binhex) (?# . shar)
+ (?- . forward)))
+
+(defvar mm-dissect-disposition "inline"
+ "The default disposition of uu parts.
+This can be either \"inline\" or \"attachment\".")
+
+(defun mm-uu-configure-p (key val)
+ (member (cons key val) mm-uu-configure-list))
+
+(defun mm-uu-configure (&optional symbol value)
+ (if symbol (set-default symbol value))
+ (setq mm-uu-begin-line nil)
+ (mapcar '(lambda (type)
+ (if (mm-uu-configure-p type 'disabled)
+ nil
+ (setq mm-uu-begin-line
+ (concat mm-uu-begin-line
+ (if mm-uu-begin-line "\\|")
+ (symbol-value
+ (intern (concat "mm-uu-" (symbol-name type)
+ "-begin-line")))))))
+ '(uu postscript binhex shar forward)))
+
+(defcustom mm-uu-configure-list nil
+ "A list of mm-uu configuration.
+To disable dissecting shar codes, for instance, add
+`(shar . disabled)' to this list."
+ :type '(repeat (cons
+ (choice (item postscript)
+ (item uu)
+ (item binhex)
+ (item shar)
+ (item forward))
+ (choice (item disabled))))
+ :group 'gnus-article-mime
+ :set 'mm-uu-configure)
+
+(mm-uu-configure)
+
+;;;### autoload
+
+(defun mm-uu-dissect ()
+ "Dissect the current buffer and return a list of uu handles."
+ (let (text-start start-char end-char
+ type file-name end-line result text-plain-type
+ start-char-1 end-char-1
+ (case-fold-search t))
+ (save-excursion
+ (save-restriction
+ (mail-narrow-to-head)
+ (goto-char (point-max)))
+ (forward-line)
+ ;;; gnus-decoded is a fake charset, which means no further
+ ;;; decoding.
+ (setq text-start (point)
+ text-plain-type '("text/plain" (charset . gnus-decoded)))
+ (while (re-search-forward mm-uu-begin-line nil t)
+ (setq start-char (match-beginning 0))
+ (setq type (cdr (assq (aref (match-string 0) 0)
+ mm-uu-identifier-alist)))
+ (setq file-name
+ (if (and (eq type 'uu)
+ (looking-at "\\(.+\\)$"))
+ (and (match-string 1)
+ (let ((nnheader-file-name-translation-alist
+ '((?/ . ?,) (? . ?_) (?* . ?_) (?$ . ?_))))
+ (nnheader-translate-file-chars (match-string 1))))))
+ (forward-line);; in case of failure
+ (setq start-char-1 (point))
+ (setq end-line (symbol-value
+ (intern (concat "mm-uu-" (symbol-name type)
+ "-end-line"))))
+ (when (and (re-search-forward end-line nil t)
+ (not (eq (match-beginning 0) (match-end 0))))
+ (setq end-char-1 (match-beginning 0))
+ (forward-line)
+ (setq end-char (point))
+ (when (cond
+ ((eq type 'binhex)
+ (setq file-name
+ (ignore-errors
+ (binhex-decode-region start-char end-char t))))
+ ((eq type 'forward)
+ (save-excursion
+ (goto-char start-char-1)
+ (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:")))
+ (t t))
+ (if (> start-char text-start)
+ (push
+ (mm-make-handle (mm-uu-copy-to-buffer text-start start-char)
+ text-plain-type)
+ result))
+ (push
+ (cond
+ ((eq type 'postscript)
+ (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
+ '("application/postscript")))
+ ((eq type 'forward)
+ (mm-make-handle (mm-uu-copy-to-buffer start-char-1 end-char-1)
+ '("message/rfc822" (charset . gnus-decoded))))
+ ((eq type 'uu)
+ (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
+ (list (or (and file-name
+ (string-match "\\.[^\\.]+$"
+ file-name)
+ (mailcap-extension-to-mime
+ (match-string 0 file-name)))
+ "application/octet-stream"))
+ 'x-uuencode nil
+ (if (and file-name (not (equal file-name "")))
+ (list mm-dissect-disposition
+ (cons 'filename file-name)))))
+ ((eq type 'binhex)
+ (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
+ (list (or (and file-name
+ (string-match "\\.[^\\.]+$" file-name)
+ (mailcap-extension-to-mime
+ (match-string 0 file-name)))
+ "application/octet-stream"))
+ 'x-binhex nil
+ (if (and file-name (not (equal file-name "")))
+ (list mm-dissect-disposition
+ (cons 'filename file-name)))))
+ ((eq type 'shar)
+ (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
+ '("application/x-shar"))))
+ result)
+ (setq text-start end-char))))
+ (when result
+ (if (> (point-max) (1+ text-start))
+ (push
+ (mm-make-handle (mm-uu-copy-to-buffer text-start (point-max))
+ text-plain-type)
+ result))
+ (setq result (cons "multipart/mixed" (nreverse result))))
+ result)))
+
+;;;### autoload
+(defun mm-uu-test ()
+ "Check whether the current buffer contains uu stuffs."
+ (save-excursion
+ (goto-char (point-min))
+ (let (type end-line result
+ (case-fold-search t))
+ (while (and mm-uu-begin-line
+ (not result) (re-search-forward mm-uu-begin-line nil t))
+ (forward-line)
+ (setq type (cdr (assq (aref (match-string 0) 0)
+ mm-uu-identifier-alist)))
+ (setq end-line (symbol-value
+ (intern (concat "mm-uu-" (symbol-name type)
+ "-end-line"))))
+ (if (and (re-search-forward end-line nil t)
+ (not (eq (match-beginning 0) (match-end 0))))
+ (setq result t)))
+ result)))
+
+(provide 'mm-uu)
+
+;;; mm-uu.el ends here