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author | Gerd Moellmann <gerd@gnu.org> | 2000-09-19 13:40:08 +0000 |
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committer | Gerd Moellmann <gerd@gnu.org> | 2000-09-19 13:40:08 +0000 |
commit | c113de23613952ed67a3bca79363b30ab7e406c3 (patch) | |
tree | fd8063340169da2af53fa73046debd7a220904ac /lisp/gnus/mm-uu.el | |
parent | 16409b0bb832ae376894cbad5892bf7623caeaaf (diff) | |
download | emacs-c113de23613952ed67a3bca79363b30ab7e406c3.tar.gz |
*** empty log message ***
Diffstat (limited to 'lisp/gnus/mm-uu.el')
-rw-r--r-- | lisp/gnus/mm-uu.el | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/lisp/gnus/mm-uu.el b/lisp/gnus/mm-uu.el new file mode 100644 index 00000000000..d5d0500585e --- /dev/null +++ b/lisp/gnus/mm-uu.el @@ -0,0 +1,250 @@ +;;; 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 |