1 ;;; mm-uu.el -- Return uu stuffs as mm handles
2 ;; Copyright (c) 1998, 1999, 2000 Free Software Foundation, Inc.
4 ;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
5 ;; Keywords: postscript uudecode binhex shar forward news
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
33 (require 'gnus-mailcap)
36 (autoload 'binhex-decode-region "binhex")
37 (autoload 'binhex-decode-region-external "binhex")
38 (autoload 'uudecode-decode-region "uudecode")
39 (autoload 'uudecode-decode-region-external "uudecode"))
41 (defun mm-uu-copy-to-buffer (from to)
42 "Copy the contents of the current buffer to a fresh buffer."
44 (let ((obuf (current-buffer)))
45 (set-buffer (generate-new-buffer " *mm-uu*"))
46 (insert-buffer-substring obuf from to)
51 (defconst mm-uu-postscript-begin-line "^%!PS-")
52 (defconst mm-uu-postscript-end-line "^%%EOF$")
54 (defconst mm-uu-uu-begin-line "^begin[ \t]+[0-7][0-7][0-7][ \t]+")
55 (defconst mm-uu-uu-end-line "^end[ \t]*$")
57 (defcustom mm-uu-decode-function 'uudecode-decode-region
58 "*Function to uudecode.
59 Internal function is done in elisp by default, therefore decoding may
60 appear to be horribly slow . You can make Gnus use the external Unix
61 decoder, such as uudecode."
62 :type '(choice (item :tag "internal" uudecode-decode-region)
63 (item :tag "external" uudecode-decode-region-external))
64 :group 'gnus-article-mime)
66 (defconst mm-uu-binhex-begin-line
67 "^:...............................................................$")
68 (defconst mm-uu-binhex-end-line ":$")
70 (defcustom mm-uu-binhex-decode-function 'binhex-decode-region
71 "*Function to binhex decode.
72 Internal function is done in elisp by default, therefore decoding may
73 appear to be horribly slow . You can make Gnus use the external Unix
74 decoder, such as hexbin."
75 :type '(choice (item :tag "internal" binhex-decode-region)
76 (item :tag "external" binhex-decode-region-external))
77 :group 'gnus-article-mime)
79 (defconst mm-uu-shar-begin-line "^#! */bin/sh")
80 (defconst mm-uu-shar-end-line "^exit 0\\|^$")
82 ;;; Thanks to Edward J. Sabol <sabol@alderaan.gsfc.nasa.gov> and
83 ;;; Peter von der Ah\'e <pahe@daimi.au.dk>
84 (defconst mm-uu-forward-begin-line "^-+ \\(Start of \\)?Forwarded message")
85 (defconst mm-uu-forward-end-line "^-+ End \\(of \\)?forwarded message")
87 (defvar mm-uu-begin-line nil)
89 (defconst mm-uu-identifier-alist
90 '((?% . postscript) (?b . uu) (?: . binhex) (?# . shar)
93 (defvar mm-dissect-disposition "inline"
94 "The default disposition of uu parts.
95 This can be either \"inline\" or \"attachment\".")
97 (defun mm-uu-configure-p (key val)
98 (member (cons key val) mm-uu-configure-list))
100 (defun mm-uu-configure (&optional symbol value)
101 (if symbol (set-default symbol value))
102 (setq mm-uu-begin-line nil)
103 (mapcar '(lambda (type)
104 (if (mm-uu-configure-p type 'disabled)
106 (setq mm-uu-begin-line
107 (concat mm-uu-begin-line
108 (if mm-uu-begin-line "\\|")
110 (intern (concat "mm-uu-" (symbol-name type)
112 '(uu postscript binhex shar forward)))
114 (defcustom mm-uu-configure-list nil
115 "A list of mm-uu configuration.
116 To disable dissecting shar codes, for instance, add
117 `(shar . disabled)' to this list."
119 (choice (item postscript)
124 (choice (item disabled))))
125 :group 'gnus-article-mime
126 :set 'mm-uu-configure)
132 (defun mm-uu-dissect ()
133 "Dissect the current buffer and return a list of uu handles."
134 (let (text-start start-char end-char
135 type file-name end-line result text-plain-type
136 start-char-1 end-char-1
137 (case-fold-search t))
140 (mail-narrow-to-head)
141 (goto-char (point-max)))
143 ;;; gnus-decoded is a fake charset, which means no further
145 (setq text-start (point)
146 text-plain-type '("text/plain" (charset . gnus-decoded)))
147 (while (re-search-forward mm-uu-begin-line nil t)
148 (setq start-char (match-beginning 0))
149 (setq type (cdr (assq (aref (match-string 0) 0)
150 mm-uu-identifier-alist)))
152 (if (and (eq type 'uu)
153 (looking-at "\\(.+\\)$"))
154 (and (match-string 1)
155 (let ((nnheader-file-name-translation-alist
156 '((?/ . ?,) (? . ?_) (?* . ?_) (?$ . ?_))))
157 (nnheader-translate-file-chars (match-string 1))))))
158 (forward-line);; in case of failure
159 (setq start-char-1 (point))
160 (setq end-line (symbol-value
161 (intern (concat "mm-uu-" (symbol-name type)
163 (when (and (re-search-forward end-line nil t)
164 (not (eq (match-beginning 0) (match-end 0))))
165 (setq end-char-1 (match-beginning 0))
167 (setq end-char (point))
172 (binhex-decode-region start-char end-char t))))
175 (goto-char start-char-1)
176 (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:")))
178 (if (> start-char text-start)
180 (mm-make-handle (mm-uu-copy-to-buffer text-start start-char)
185 ((eq type 'postscript)
186 (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
187 '("application/postscript")))
189 (mm-make-handle (mm-uu-copy-to-buffer start-char-1 end-char-1)
190 '("message/rfc822" (charset . gnus-decoded))))
192 (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
193 (list (or (and file-name
194 (string-match "\\.[^\\.]+$" file-name)
195 (mailcap-extension-to-mime
196 (match-string 0 file-name)))
197 "application/octet-stream"))
199 (if (and file-name (not (equal file-name "")))
200 (list mm-dissect-disposition
201 (cons 'filename file-name)))))
203 (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
204 (list (or (and file-name
205 (string-match "\\.[^\\.]+$" file-name)
206 (mailcap-extension-to-mime
207 (match-string 0 file-name)))
208 "application/octet-stream"))
210 (if (and file-name (not (equal file-name "")))
211 (list mm-dissect-disposition
212 (cons 'filename file-name)))))
214 (mm-make-handle (mm-uu-copy-to-buffer start-char end-char)
215 '("application/x-shar"))))
217 (setq text-start end-char))))
219 (if (> (point-max) (1+ text-start))
221 (mm-make-handle (mm-uu-copy-to-buffer text-start (point-max))
224 (setq result (cons "multipart/mixed" (nreverse result))))
229 "Check whether the current buffer contains uu stuffs."
231 (goto-char (point-min))
232 (let (type end-line result
233 (case-fold-search t))
234 (while (and mm-uu-begin-line
235 (not result) (re-search-forward mm-uu-begin-line nil t))
237 (setq type (cdr (assq (aref (match-string 0) 0)
238 mm-uu-identifier-alist)))
239 (setq end-line (symbol-value
240 (intern (concat "mm-uu-" (symbol-name type)
242 (if (and (re-search-forward end-line nil t)
243 (not (eq (match-beginning 0) (match-end 0))))
249 ;;; mm-uu.el ends here