;;; uudecode.el -- elisp native uudecode
-;; Copyright (c) 1998 by Shenghuo Zhu <zsh@cs.rochester.edu>
+
+;; Copyright (c) 1998, 1999, 2000 Free Software Foundation, Inc.
;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
-;; $Revision: 5.3 $
-;; Keywords: uudecode
+;; Keywords: uudecode news
-;; This file is not part of GNU Emacs, but the same permissions
-;; apply.
+;; This file is a 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
;; Lots of codes are stolen from mm-decode.el, gnus-uu.el and
;; base64.el
+;; This looks as though it could be made rather more efficient for
+;; internal working. Encoding could use a lookup table and decoding
+;; should presumably use a vector or list buffer for partial results
+;; rather than with-current-buffer. -- fx
+
+;; Only `uudecode-decode-region' should be advertised, and whether or
+;; not that uses a program should be customizable, but I guess it's
+;; too late now. -- fx
+
;;; Code:
-(if (not (fboundp 'char-int))
- (fset 'char-int 'identity))
+(eval-when-compile (require 'cl))
+
+(eval-and-compile
+ (defalias 'uudecode-char-int
+ (if (fboundp 'char-int)
+ 'char-int
+ 'identity))
-(defvar uudecode-decoder-program "uudecode"
+ (if (featurep 'xemacs)
+ (defalias 'uudecode-insert-char 'insert-char)
+ (defun uudecode-insert-char (char &optional count ignored buffer)
+ (if (or (null buffer) (eq buffer (current-buffer)))
+ (insert-char char count)
+ (with-current-buffer buffer
+ (insert-char char count))))))
+
+(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.")
+input and write the converted data to its standard output."
+ :type 'string
+ :group 'gnus-extract)
-(defvar uudecode-decoder-switches nil
- "*List of command line flags passed to the command named by uudecode-decoder-program.")
+(defcustom uudecode-decoder-switches nil
+ "*List of command line flags passed to `uudecode-decoder-program'."
+ :group 'gnus-extract
+ :type '(repeat string))
(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))
- )))
-
-(if (string-match "XEmacs" emacs-version)
- (defalias 'uudecode-insert-char 'insert-char)
- (defun uudecode-insert-char (char &optional count ignored buffer)
- (if (or (null buffer) (eq buffer (current-buffer)))
- (insert-char char count)
- (with-current-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.
+ "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)
(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
+ (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)
(cond
((> (skip-chars-forward uudecode-alphabet end) 0)
(setq lim (point))
- (setq remain
- (logand (- (char-int (char-after inputpos)) 32) 63))
+ (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
- (-
- (char-int (char-after inputpos)) 32) 63)))
+ (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)
- (uudecode-insert-char
+ (uudecode-insert-char
(lsh bits -16) 1 nil work-buffer)
- (uudecode-insert-char
+ (uudecode-insert-char
(logand (lsh bits -8) 255) 1 nil work-buffer)
(uudecode-insert-char (logand bits 255) 1 nil
- work-buffer)
+ 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)))
+ (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
projects / elisp / gnus.git- / blobdiff