;;; uudecode.el -- elisp native uudecode
-;; Copyright (c) 1998 by Shenghuo Zhu <zsh@cs.rochester.edu>
+
+;; Copyright (c) 1998, 1999, 2000, 2001, 2003, 2004
+;; 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
;; it under the terms of the GNU General Public License as published by
;;; 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))
+
+(require 'path-util)
-(defvar uudecode-decoder-program "uudecode"
+(eval-and-compile
+ (defalias 'uudecode-char-int
+ (if (fboundp 'char-int)
+ 'char-int
+ 'identity)))
+
+(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.")
-
-(defvar uudecode-decoder-switches nil
- "*List of command line flags passed to the command named by uudecode-decoder-program.")
+input and write the converted data to its standard output."
+ :type 'string
+ :group 'gnus-extract)
+
+(defcustom uudecode-decoder-switches nil
+ "*List of command line flags passed to `uudecode-decoder-program'."
+ :group 'gnus-extract
+ :type '(repeat string))
+
+(defcustom uudecode-use-external
+ (exec-installed-p uudecode-decoder-program)
+ "*Use external uudecode program."
+ :version "21.4"
+ :group 'gnus-extract
+ :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)
(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))))))
;;;###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 unexpectly")
+ (setq done t))
+ ((and (= (point) end) (not done))
+ ;;(error "uucode ends unexpectly")
+ (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
+ (let (default-enable-multibyte-characters)
+ (with-temp-file file-name
+ (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)))))
+ (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)