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[elisp/flim.git] / mel-g.el

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-;;; mel-g.el: Gzip64 encoder/decoder for GNU Emacs
-
-;; Copyright (C) 1995,1996,1997,1998 MORIOKA Tomohiko
-;; Copyright (C) 1996,1997 Shuhei KOBAYASHI
-
-;; Author: Shuhei KOBAYASHI <shuhei-k@jaist.ac.jp>
-;;     modified by MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Maintainer: Shuhei KOBAYASHI <shuhei-k@jaist.ac.jp>
-;; Created: 1995/10/25
-;; Keywords: Gzip64, base64, gzip, MIME
-
-;; This file is part of MEL (MIME Encoding Library).
-
-;; This program 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.
-
-;; This program 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:
-
-;;; NOTE: Gzip64 is an experimental Content-Transfer-Encoding and its
-;;; use is STRONGLY DISCOURAGED except for private communication.
-
-;;; Code:
-
-(require 'emu)
-(require 'path-util)
-
-
-;;; @ variables
-;;;
-
-(defvar gzip64-external-encoder
-  (let ((file (exec-installed-p "mmencode")))
-    (and file
-        (` ("sh" "-c" (, (concat "gzip -c | " file))))
-        ))
-  "*list of gzip64 encoder program name and its arguments.")
-
-(defvar gzip64-external-decoder
-  (let ((file (exec-installed-p "mmencode")))
-    (and file
-        (` ("sh" "-c" (, (concat file " -u | gzip -dc"))))
-        ))
-  "*list of gzip64 decoder program name and its arguments.")
-
-
-;;; @ encoder/decoder for region
-;;;
-
-(defun gzip64-external-encode-region (beg end)
-  (interactive "*r")
-  (save-excursion
-    (as-binary-process (apply (function call-process-region)
-                             beg end (car gzip64-external-encoder)
-                             t t nil (cdr gzip64-external-encoder))
-                      )
-    ;; for OS/2
-    ;;   regularize line break code
-    (goto-char (point-min))
-    (while (re-search-forward "\r$" nil t)
-      (replace-match "")
-      )
-    ))
-
-(defun gzip64-external-decode-region (beg end)
-  (interactive "*r")
-  (save-excursion
-    (as-binary-process (apply (function call-process-region)
-                             beg end (car gzip64-external-decoder)
-                             t t nil (cdr gzip64-external-decoder))
-                      )
-    ))
-
-(defalias 'gzip64-encode-region 'gzip64-external-encode-region)
-(defalias 'gzip64-decode-region 'gzip64-external-decode-region)
-
-
-;;; @ encoder/decoder for file
-;;;
-
-(defun gzip64-insert-encoded-file (filename)
-  (interactive (list (read-file-name "Insert encoded file: ")))
-  (apply (function call-process) (car gzip64-external-encoder)
-        filename t nil
-        (cdr gzip64-external-encoder))
-  )
-
-(defun gzip64-write-decoded-region (start end filename)
-  "Decode and write current region encoded by gzip64 into FILENAME.
-START and END are buffer positions."
-  (interactive
-   (list (region-beginning) (region-end)
-        (read-file-name "Write decoded region to file: ")))
-  (as-binary-process
-   (apply (function call-process-region)
-         start end (car gzip64-external-decoder)
-         nil nil nil
-         (let ((args (cdr gzip64-external-decoder)))
-           (append (butlast args)
-                   (list (concat (car (last args)) ">" filename))))
-         )))
-
-
-;;; @ end
-;;;
-
-(provide 'mel-g)
-
-;;; mel-g.el ends here.