+;;; mm-uu.el -- Return uu stuffs as mm handles
+;; Copyright (c) 1998 by Shenghuo Zhu <zsh@cs.rochester.edu>
+
+;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
+;; $Revision: 1.1.2.1 $
+;; Keywords: news postscript uudecode binhex shar
+
+;; This file is not part of GNU Emacs, but the same permissions
+;; apply.
+;;
+;; 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-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]*$")
+(defvar mm-uu-decode-function 'uudecode-decode-region)
+
+(defconst mm-uu-binhex-begin-line
+ "^:...............................................................$")
+(defconst mm-uu-binhex-end-line ":$")
+(defvar mm-uu-binhex-decode-function 'binhex-decode-region)
+
+(defconst mm-uu-shar-begin-line "^#! */bin/sh")
+(defconst mm-uu-shar-end-line "^exit 0")
+
+(defvar mm-uu-begin-line
+ (concat mm-uu-postscript-begin-line "\\|"
+ mm-uu-uu-begin-line "\\|"
+ mm-uu-binhex-begin-line "\\|"
+ mm-uu-shar-begin-line))
+
+(defvar mm-uu-identifier-alist
+ '((?% . postscript) (?b . uu) (?: . binhex) (?# . shar)))
+
+;;;### autoload
+
+(defun mm-uu-dissect ()
+ "Dissect the current buffer and return a list of uu handles."
+ (save-excursion
+ (save-restriction
+ (mail-narrow-to-head)
+ (goto-char (point-max)))
+ (let ((text-start (point)) start-char end-char
+ type file-name end-line result)
+ (while (re-search-forward mm-uu-begin-line nil t)
+ (beginning-of-line)
+ (setq start-char (point))
+ (forward-line) ;; in case of failure
+ (setq type (cdr (assq (aref (match-string 0) 0)
+ mm-uu-identifier-alist)))
+ (setq file-name
+ (if (eq type 'uu)
+ (and (match-string 1)
+ (let ((nnheader-file-name-translation-alist
+ '((?/ . ?,) (? . ?_) (?* . ?_) (?$ . ?_))))
+ (nnheader-translate-file-chars (match-string 1))))))
+ (setq end-line (symbol-value
+ (intern (concat "mm-uu-" (symbol-name type)
+ "-end-line"))))
+ (when (re-search-forward end-line nil t)
+ (setq end-char (point))
+ (when (or (not (eq type 'binhex))
+ (setq file-name
+ (condition-case nil
+ (binhex-decode-region start-char end-char t)
+ (error nil))))
+ (if (> start-char text-start)
+ (push
+ (list (mm-uu-copy-to-buffer text-start start-char)
+ '("text/plain") nil nil nil nil)
+ result))
+ (push
+ (cond
+ ((eq type 'postscript)
+ (list (mm-uu-copy-to-buffer start-char end-char)
+ '("application/postscript") nil nil nil nil))
+ ((eq type 'uu)
+ (list (mm-uu-copy-to-buffer start-char end-char)
+ (list (or (and file-name
+ (string-match "\\.[^\\.]+$" file-name)
+ (mailcap-extension-to-mime
+ (match-string 0 file-name)))
+ "application/octet-stream"))
+ mm-uu-decode-function nil
+ (if (and file-name (not (equal file-name "")))
+ (list "attachment" (cons 'filename file-name)))
+ file-name))
+ ((eq type 'binhex)
+ (list (mm-uu-copy-to-buffer start-char end-char)
+ (list (or (and file-name
+ (string-match "\\.[^\\.]+$" file-name)
+ (mailcap-extension-to-mime
+ (match-string 0 file-name)))
+ "application/octet-stream"))
+ mm-uu-binhex-decode-function nil
+ (if (and file-name (not (equal file-name "")))
+ (list "attachment" (cons 'filename file-name)))
+ file-name))
+ ((eq type 'shar)
+ (list (mm-uu-copy-to-buffer start-char end-char)
+ '("application/x-shar") nil nil nil nil)))
+ result)
+ (setq text-start end-char))))
+ (if (and result
+ (> start-char text-start))
+ (push
+ (list (mm-uu-copy-to-buffer text-start (point-max))
+ '("text/plain") nil nil nil nil)
+ result))
+ (nreverse result))))
+
+(provide 'mm-uu)
+
+;;; mm-uu.el ends here
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