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1 ;;; mel-g.el: Gzip64 encoder/decoder for GNU Emacs
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2
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3 ;; Copyright (C) 1995,1996,1997 MORIOKA Tomohiko
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4 ;; Copyright (C) 1996 Shuhei KOBAYASHI
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5
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6 ;; Author: Shuhei KOBAYASHI <shuhei-k@jaist.ac.jp>
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7 ;; modified by MORIOKA Tomohiko <morioka@jaist.ac.jp>
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8 ;; Maintainer: Shuhei KOBAYASHI <shuhei-k@jaist.ac.jp>
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9 ;; Created: 1995/10/25
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10 ;; Version: $Id: mel-g.el,v 1.6 1997/03/16 05:55:17 steve Exp $
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11 ;; Keywords: Gzip64, base64, gzip, MIME
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12
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13 ;; This file is not part of MEL (MIME Encoding Library) yet.
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14
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15 ;; This program is free software; you can redistribute it and/or
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16 ;; modify it under the terms of the GNU General Public License as
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17 ;; published by the Free Software Foundation; either version 2, or (at
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18 ;; your option) any later version.
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19
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20 ;; This program is distributed in the hope that it will be useful, but
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21 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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22 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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23 ;; General Public License for more details.
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24
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25 ;; You should have received a copy of the GNU General Public License
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26 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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27 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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28 ;; Boston, MA 02111-1307, USA.
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29
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4
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30 ;;; Code:
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31
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32 (require 'emu)
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33 (require 'file-detect)
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34
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35
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36 ;;; @ variables
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37 ;;;
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38
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39 (defvar gzip64-external-encoder
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40 (let ((file (exec-installed-p "mmencode")))
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41 (and file
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42 (` ("sh" "-c" (, (concat "gzip -c | " file))))
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43 ))
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44 "*list of gzip64 encoder program name and its arguments.")
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45
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46 (defvar gzip64-external-decoder
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47 (let ((file (exec-installed-p "mmencode")))
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48 (and file
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49 (` ("sh" "-c" (, (concat file " -u | gzip -dc"))))
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50 ))
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51 "*list of gzip64 decoder program name and its arguments.")
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52
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53
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54 ;;; @ encoder/decoder for region
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55 ;;;
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56
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57 (defun gzip64-external-encode-region (beg end)
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58 (interactive "*r")
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59 (save-excursion
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60 (as-binary-process (apply (function call-process-region)
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61 beg end (car gzip64-external-encoder)
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62 t t nil (cdr gzip64-external-encoder))
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63 )
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64 ;; for OS/2
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65 ;; regularize line break code
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66 (goto-char (point-min))
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67 (while (re-search-forward "\r$" nil t)
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68 (replace-match "")
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69 )
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70 ))
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71
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72 (defun gzip64-external-decode-region (beg end)
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73 (interactive "*r")
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74 (save-excursion
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75 (as-binary-process (apply (function call-process-region)
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76 beg end (car gzip64-external-decoder)
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77 t t nil (cdr gzip64-external-decoder))
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78 )
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79 ))
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80
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81 (defalias 'gzip64-encode-region 'gzip64-external-encode-region)
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82 (defalias 'gzip64-decode-region 'gzip64-external-decode-region)
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83
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84
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85 ;;; @ encoder/decoder for file
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86 ;;;
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87
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88 (defun gzip64-insert-encoded-file (filename)
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89 (interactive (list (read-file-name "Insert encoded file: ")))
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90 (apply (function call-process) (car gzip64-external-encoder)
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91 filename t nil
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92 (cdr gzip64-external-encoder))
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93 )
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94
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95
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96 ;;; @ end
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97 ;;;
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98
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99 (provide 'mel-g)
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100
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101 ;;; mel-g.el ends here.
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