;;; uudecode.el -- elisp native uudecode
-;; Copyright (c) 1998 by Shenghuo Zhu <zsh@cs.rochester.edu>
+
+;; Copyright (C) 1998-2014 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
-;; $Revision: 1.3 $
-;; Keywords: uudecode
+;; Keywords: uudecode news
-;; This file is not part of GNU Emacs, but the same permissions
-;; apply.
+;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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.
+;; the Free Software Foundation, either version 3 of the License, 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
;; 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.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
-;; Lots of codes are stolen from mm-decode.el, gnus-uu.el and
-;; base64.el
-
;;; Code:
-(if (not (fboundp 'char-int))
- (fset 'char-int 'identity))
+(eval-when-compile (require 'cl))
-(defvar uudecode-decoder-program "uudecode"
- "*Non-nil value should be a string that names a uu decoder.
-The program should expect to read uu data on its standard
-input and write the converted data to its standard output.")
+(eval-and-compile
+ (defalias 'uudecode-char-int
+ (if (fboundp 'char-int)
+ 'char-int
+ 'identity)))
-(defvar uudecode-decoder-switches nil
- "*List of command line flags passed to the command named by uudecode-decoder-program.")
+(defgroup uudecode nil
+ "Decoding of uuencoded data."
+ :group 'mail
+ :group 'news)
+
+(defcustom uudecode-decoder-program "uudecode"
+ "Non-nil value should be a string that names a uu decoder.
+The program should expect to read uu data on its standard
+input and write the converted data to its standard output."
+ :type 'string
+ :group 'uudecode)
+
+(defcustom uudecode-decoder-switches nil
+ "List of command line flags passed to `uudecode-decoder-program'."
+ :group 'uudecode
+ :type '(repeat string))
+
+(defcustom uudecode-use-external
+ (executable-find uudecode-decoder-program)
+ "Use external uudecode program."
+ :version "22.1"
+ :group 'uudecode
+ :type 'boolean)
(defconst uudecode-alphabet "\040-\140")
(setq str (concat str "[^a-z]")))
(concat str ".?$")))
-(defvar uudecode-temporary-file-directory "/tmp/")
+(defvar uudecode-temporary-file-directory
+ (cond ((fboundp 'temp-directory) (temp-directory))
+ ((boundp 'temporary-file-directory) temporary-file-directory)
+ ("/tmp")))
;;;###autoload
(defun uudecode-decode-region-external (start end &optional file-name)
- "uudecode region between START and END with external decoder.
-
-If FILE-NAME is non-nil, save the result to FILE-NAME."
+ "Uudecode region between START and END using external program.
+If FILE-NAME is non-nil, save the result to FILE-NAME. The program
+used is specified by `uudecode-decoder-program'."
(interactive "r\nP")
- (let ((cbuf (current-buffer)) tempfile firstline work-buffer status)
+ (let ((cbuf (current-buffer)) tempfile firstline status)
(save-excursion
(goto-char start)
(when (re-search-forward uudecode-begin-line nil t)
(setq firstline (point))
(cond ((null file-name))
((stringp file-name))
- (t
- (setq file-name (read-file-name "File to Name:"
- nil nil nil
+ (t
+ (setq file-name (read-file-name "File to Name:"
+ nil nil nil
(match-string 1)))))
- (setq tempfile (expand-file-name
- (or file-name (concat uudecode-temporary-file-directory
- (make-temp-name "uu")))))
- (let ((cdir default-directory) default-process-coding-system)
+ (setq tempfile (if file-name
+ (expand-file-name file-name)
+ (if (fboundp 'make-temp-file)
+ (let ((temporary-file-directory
+ uudecode-temporary-file-directory))
+ (make-temp-file "uu"))
+ (expand-file-name
+ (make-temp-name "uu")
+ uudecode-temporary-file-directory))))
+ (let ((cdir default-directory)
+ (default-process-coding-system
+ (if (featurep 'xemacs)
+ ;; In XEmacs, `nil' is not a valid coding system.
+ '(binary . binary)
+ nil)))
(unwind-protect
- (progn
- (set-buffer (setq work-buffer
- (generate-new-buffer " *uudecode-work*")))
- (buffer-disable-undo work-buffer)
+ (with-temp-buffer
(insert "begin 600 " (file-name-nondirectory tempfile) "\n")
(insert-buffer-substring cbuf firstline end)
(cd (file-name-directory tempfile))
(apply 'call-process-region
(point-min)
(point-max)
- uudecode-decoder-program
+ uudecode-decoder-program
nil
nil
nil
(let (format-alist)
(insert-file-contents-literally tempfile)))
(message "Can not uudecode")))
- (and work-buffer (kill-buffer work-buffer))
- (condition-case ()
- (or file-name (delete-file tempfile))
- (error))
- )))
-
-(defun uudecode-insert-char (char &optional count ignored buffer)
- (condition-case nil
- (progn
- (insert-char char count ignored buffer)
- (fset 'uudecode-insert-char 'insert-char))
- (wrong-number-of-arguments
- (fset 'uudecode-insert-char 'uudecode-xemacs-insert-char)
- (uudecode-insert-char char count ignored buffer))))
-
-(defun uudecode-xemacs-insert-char (char &optional count ignored buffer)
- (if (or (null buffer) (eq buffer (current-buffer)))
- (insert-char char count)
- (save-excursion
- (set-buffer buffer)
- (insert-char char count))))
+ (ignore-errors (or file-name (delete-file tempfile))))))
+
+(eval-and-compile
+ (defalias 'uudecode-string-to-multibyte
+ (cond
+ ((featurep 'xemacs)
+ 'identity)
+ ((fboundp 'string-to-multibyte)
+ 'string-to-multibyte)
+ (t
+ (lambda (string)
+ "Return a multibyte string with the same individual chars as string."
+ (mapconcat
+ (lambda (ch) (string-as-multibyte (char-to-string ch)))
+ string ""))))))
;;;###autoload
-
-(defun uudecode-decode-region (start end &optional file-name)
- "uudecode region between START and END.
+(defun uudecode-decode-region-internal (start end &optional file-name)
+ "Uudecode region between START and END without using an external program.
If FILE-NAME is non-nil, save the result to FILE-NAME."
(interactive "r\nP")
- (let ((work-buffer nil)
- (done nil)
+ (let ((done nil)
(counter 0)
(remain 0)
(bits 0)
- (lim 0) inputpos
+ (lim 0) inputpos result
(non-data-chars (concat "^" uudecode-alphabet)))
- (unwind-protect
- (save-excursion
+ (save-excursion
+ (goto-char start)
+ (when (re-search-forward uudecode-begin-line nil t)
+ (cond ((null file-name))
+ ((stringp file-name))
+ (t
+ (setq file-name (expand-file-name
+ (read-file-name "File to Name:"
+ nil nil nil
+ (match-string 1))))))
+ (forward-line 1)
+ (skip-chars-forward non-data-chars end)
+ (while (not done)
+ (setq inputpos (point))
+ (setq remain 0 bits 0 counter 0)
+ (cond
+ ((> (skip-chars-forward uudecode-alphabet end) 0)
+ (setq lim (point))
+ (setq remain
+ (logand (- (uudecode-char-int (char-after inputpos)) 32)
+ 63))
+ (setq inputpos (1+ inputpos))
+ (if (= remain 0) (setq done t))
+ (while (and (< inputpos lim) (> remain 0))
+ (setq bits (+ bits
+ (logand
+ (-
+ (uudecode-char-int (char-after inputpos)) 32)
+ 63)))
+ (if (/= counter 0) (setq remain (1- remain)))
+ (setq counter (1+ counter)
+ inputpos (1+ inputpos))
+ (cond ((= counter 4)
+ (setq result (cons
+ (concat
+ (char-to-string (lsh bits -16))
+ (char-to-string (logand (lsh bits -8) 255))
+ (char-to-string (logand bits 255)))
+ result))
+ (setq bits 0 counter 0))
+ (t (setq bits (lsh bits 6)))))))
+ (cond
+ (done)
+ ((> 0 remain)
+ (error "uucode line ends unexpectedly")
+ (setq done t))
+ ((and (= (point) end) (not done))
+ ;;(error "uucode ends unexpectedly")
+ (setq done t))
+ ((= counter 3)
+ (setq result (cons
+ (concat
+ (char-to-string (logand (lsh bits -16) 255))
+ (char-to-string (logand (lsh bits -8) 255)))
+ result)))
+ ((= counter 2)
+ (setq result (cons
+ (char-to-string (logand (lsh bits -10) 255))
+ result))))
+ (skip-chars-forward non-data-chars end))
+ (if file-name
+ (with-temp-file file-name
+ (unless (featurep 'xemacs) (set-buffer-multibyte nil))
+ (insert (apply 'concat (nreverse result))))
+ (or (markerp end) (setq end (set-marker (make-marker) end)))
(goto-char start)
- (when (re-search-forward uudecode-begin-line nil t)
- (cond ((null file-name))
- ((stringp file-name))
- (t
- (setq file-name (expand-file-name
- (read-file-name "File to Name:"
- nil nil nil
- (match-string 1))))))
- (setq work-buffer (generate-new-buffer " *uudecode-work*"))
- (buffer-disable-undo work-buffer)
- (forward-line 1)
- (skip-chars-forward non-data-chars end)
- (while (not done)
- (setq inputpos (point))
- (setq remain 0 bits 0 counter 0)
- (cond
- ((> (skip-chars-forward uudecode-alphabet end) 0)
- (setq lim (point))
- (setq remain
- (logand (- (char-int (char-after inputpos)) 32) 63))
- (setq inputpos (1+ inputpos))
- (if (= remain 0) (setq done t))
- (while (and (< inputpos lim) (> remain 0))
- (setq bits (+ bits
- (logand
- (-
- (char-int (char-after inputpos)) 32) 63)))
- (if (/= counter 0) (setq remain (1- remain)))
- (setq counter (1+ counter)
- inputpos (1+ inputpos))
- (cond ((= counter 4)
- (uudecode-insert-char
- (lsh bits -16) 1 nil work-buffer)
- (uudecode-insert-char
- (logand (lsh bits -8) 255) 1 nil work-buffer)
- (uudecode-insert-char (logand bits 255) 1 nil
- work-buffer)
- (setq bits 0 counter 0))
- (t (setq bits (lsh bits 6)))))))
- (cond
- (done)
- ((> 0 remain)
- (error "uucode line ends unexpectly")
- (setq done t))
- ((and (= (point) end) (not done))
- ;(error "uucode ends unexpectly")
- (setq done t))
- ((= counter 3)
- (uudecode-insert-char (logand (lsh bits -16) 255) 1 nil
- work-buffer)
- (uudecode-insert-char (logand (lsh bits -8) 255) 1 nil
- work-buffer))
- ((= counter 2)
- (uudecode-insert-char (logand (lsh bits -10) 255) 1 nil
- work-buffer)))
- (skip-chars-forward non-data-chars end))
- (if file-name
- (save-excursion
- (set-buffer work-buffer)
- (write-file file-name))
- (or (markerp end) (setq end (set-marker (make-marker) end)))
- (goto-char start)
- (insert-buffer-substring work-buffer)
- (delete-region (point) end))))
- (and work-buffer (kill-buffer work-buffer)))))
+ (if enable-multibyte-characters
+ (dolist (x (nreverse result))
+ (insert (uudecode-string-to-multibyte x)))
+ (insert (apply 'concat (nreverse result))))
+ (delete-region (point) end))))))
+
+;;;###autoload
+(defun uudecode-decode-region (start end &optional file-name)
+ "Uudecode region between START and END.
+If FILE-NAME is non-nil, save the result to FILE-NAME."
+ (if uudecode-use-external
+ (uudecode-decode-region-external start end file-name)
+ (uudecode-decode-region-internal start end file-name)))
(provide 'uudecode)
projects / gnus / blobdiff