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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
|
