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1 ;;; tm-def.el --- definition module for tm
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3 ;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
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5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
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6 ;; Version: $Id: tm-def.el,v 1.4 1997/02/15 22:21:26 steve Exp $
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7 ;; Keywords: mail, news, MIME, multimedia, definition
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8
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9 ;; This file is part of tm (Tools for MIME).
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10
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11 ;; This program is free software; you can redistribute it and/or
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12 ;; modify it under the terms of the GNU General Public License as
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13 ;; published by the Free Software Foundation; either version 2, or (at
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14 ;; your option) any later version.
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15
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16 ;; This program is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 ;; Boston, MA 02111-1307, USA.
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25
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26 ;;; Code:
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27
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28 (require 'emu)
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29
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30
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31 ;;; @ variables
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32 ;;;
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33
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34 (defvar mime/tmp-dir (or (getenv "TM_TMP_DIR") "/tmp/"))
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35
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36 (defvar mime/use-multi-frame
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37 (and (>= emacs-major-version 19) window-system))
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38
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39 (defvar mime/find-file-function
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40 (if mime/use-multi-frame
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41 (function find-file-other-frame)
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42 (function find-file)
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43 ))
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44
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45 (defvar mime/output-buffer-window-is-shared-with-bbdb t
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46 "*If t, mime/output-buffer window is shared with BBDB window.")
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47
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48
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49 ;;; @ constants
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50 ;;;
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51
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52 (defconst mime/output-buffer-name "*MIME-out*")
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53 (defconst mime/temp-buffer-name " *MIME-temp*")
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54
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55
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56 ;;; @ charset and encoding
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57 ;;;
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58
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59 (defvar mime-charset-type-list
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60 '((us-ascii 7 nil)
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61 (iso-8859-1 8 "quoted-printable")
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62 (iso-8859-2 8 "quoted-printable")
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63 (iso-8859-3 8 "quoted-printable")
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64 (iso-8859-4 8 "quoted-printable")
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65 (iso-8859-5 8 "quoted-printable")
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66 (koi8-r 8 "quoted-printable")
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67 (iso-8859-7 8 "quoted-printable")
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68 (iso-8859-8 8 "quoted-printable")
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69 (iso-8859-9 8 "quoted-printable")
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70 (iso-2022-jp 7 "base64")
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71 (iso-2022-kr 7 "base64")
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72 (euc-kr 8 "base64")
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73 (gb2312 8 "quoted-printable")
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74 (big5 8 "base64")
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75 (iso-2022-jp-2 7 "base64")
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76 (iso-2022-int-1 7 "base64")
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77 ))
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78
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79 (defun mime/encoding-name (transfer-level &optional not-omit)
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80 (cond ((> transfer-level 8) "binary")
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81 ((= transfer-level 8) "8bit")
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82 (not-omit "7bit")
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83 ))
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84
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85 (defun mime/make-charset-default-encoding-alist (transfer-level)
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86 (mapcar (function
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87 (lambda (charset-type)
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88 (let ((charset (upcase (symbol-name (car charset-type))))
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89 (type (nth 1 charset-type))
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90 (encoding (nth 2 charset-type))
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91 )
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92 (if (<= type transfer-level)
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93 (cons charset (mime/encoding-name type))
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94 (cons charset encoding)
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95 ))))
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96 mime-charset-type-list))
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97
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98
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99 ;;; @ button
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100 ;;;
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101
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102 (defun tm:set-face-region (b e face)
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103 (let ((overlay (tl:make-overlay b e)))
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104 (tl:overlay-put overlay 'face face)
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105 ))
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106
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107 (defvar tm:button-face 'bold
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108 "Face used for content-button or URL-button of MIME-Preview buffer.
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109 \[tm-def.el]")
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110
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111 (defvar tm:mouse-face 'highlight
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112 "Face used for MIME-preview buffer mouse highlighting. [tm-def.el]")
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113
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114 (defvar tm:warning-face nil
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115 "Face used for invalid encoded-word.")
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116
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117 (defun tm:add-button (from to func &optional data)
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118 "Create a button between FROM and TO with callback FUNC and data DATA."
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119 (and tm:button-face
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120 (tl:overlay-put (tl:make-overlay from to) 'face tm:button-face))
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121 (tl:add-text-properties from to
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122 (append (and tm:mouse-face
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123 (list 'mouse-face tm:mouse-face))
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124 (list 'tm-callback func)
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125 (and data (list 'tm-data data))
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126 ))
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127 )
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128
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129 (defvar tm:mother-button-dispatcher nil)
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130
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131 (defun tm:button-dispatcher (event)
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132 "Select the button under point."
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133 (interactive "e")
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134 (let (buf point func data)
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135 (save-window-excursion
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136 (mouse-set-point event)
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137 (setq buf (current-buffer)
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138 point (point)
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139 func (get-text-property (point) 'tm-callback)
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140 data (get-text-property (point) 'tm-data)
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141 )
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142 )
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143 (save-excursion
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144 (set-buffer buf)
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145 (goto-char point)
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146 (if func
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147 (apply func data)
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148 (if (fboundp tm:mother-button-dispatcher)
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149 (funcall tm:mother-button-dispatcher event)
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150 )
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151 ))))
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152
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153
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154 ;;; @ for URL
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155 ;;;
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156
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157 (defvar tm:URL-regexp
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158 "\\(http\\|ftp\\|file\\|gopher\\|news\\|telnet\\|wais\\|mailto\\):\\(//[-a-zA-Z0-9_.]+:[0-9]*\\)?[-a-zA-Z0-9_=?#$@~`%&*+|\\/.,]*[-a-zA-Z0-9_=#$@~`%&*+|\\/]")
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159
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160 (defvar browse-url-browser-function nil)
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161
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162 (defun tm:browse-url (&optional url)
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163 (if (fboundp browse-url-browser-function)
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164 (if url
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165 (funcall browse-url-browser-function url)
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166 (call-interactively browse-url-browser-function))
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167 (if (fboundp tm:mother-button-dispatcher)
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168 (call-interactively tm:mother-button-dispatcher)
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169 )
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170 ))
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171
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172
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173 ;;; @ PGP
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174 ;;;
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175
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176 (defvar pgp-function-alist
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177 '(
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178 ;; for tm-pgp
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179 (verify mc-verify "mc-toplev")
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180 (decrypt mc-decrypt "mc-toplev")
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181 (fetch-key mc-pgp-fetch-key "mc-pgp")
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182 (snarf-keys mc-snarf-keys "mc-toplev")
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183 ;; for tm-edit
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184 (mime-sign tm:mc-pgp-sign-region "tm-edit-mc")
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185 (traditional-sign mc-pgp-sign-region "mc-pgp")
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186 (encrypt tm:mc-pgp-encrypt-region "tm-edit-mc")
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187 (insert-key mc-insert-public-key "mc-toplev")
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188 )
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189 "Alist of service names vs. corresponding functions and its filenames.
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190 Each element looks like (SERVICE FUNCTION FILE).
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191
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192 SERVICE is a symbol of PGP processing. It allows `verify', `decrypt',
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193 `fetch-key', `snarf-keys', `mime-sign', `traditional-sign', `encrypt'
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194 or `insert-key'.
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195
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196 Function is a symbol of function to do specified SERVICE.
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197
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198 FILE is string of filename which has definition of corresponding
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199 FUNCTION.")
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200
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201 (defmacro pgp-function (method)
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202 "Return function to do service METHOD."
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203 (` (car (cdr (assq (, method) (symbol-value 'pgp-function-alist)))))
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204 )
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205
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206 (mapcar (function
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207 (lambda (method)
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208 (autoload (second method)(third method))
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209 ))
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210 pgp-function-alist)
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211
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212
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213 ;;; @ definitions about MIME
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214 ;;;
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215
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216 (defconst mime/tspecials "][\000-\040()<>@,\;:\\\"/?.=")
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217 (defconst mime/token-regexp (concat "[^" mime/tspecials "]+"))
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218 (defconst mime/charset-regexp mime/token-regexp)
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219
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220 (defconst mime/content-type-subtype-regexp
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221 (concat mime/token-regexp "/" mime/token-regexp))
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222
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223 (defconst mime/disposition-type-regexp mime/token-regexp)
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224
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225
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226 ;;; @@ Base64
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227 ;;;
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228
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229 (defconst base64-token-regexp "[A-Za-z0-9+/]")
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230 (defconst base64-token-padding-regexp "[A-Za-z0-9+/=]")
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231
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232 (defconst mime/B-encoded-text-regexp
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233 (concat "\\(\\("
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234 base64-token-regexp
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235 base64-token-regexp
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236 base64-token-regexp
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237 base64-token-regexp
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74
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238 "\\)*"
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239 base64-token-regexp
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240 base64-token-regexp
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241 base64-token-padding-regexp
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242 base64-token-padding-regexp
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243 "\\)"))
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244
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245 (defconst mime/B-encoding-and-encoded-text-regexp
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246 (concat "\\(B\\)\\?" mime/B-encoded-text-regexp))
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247
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248
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249 ;;; @@ Quoted-Printable
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250 ;;;
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251
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252 (defconst quoted-printable-hex-chars "0123456789ABCDEF")
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253 (defconst quoted-printable-octet-regexp
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254 (concat "=[" quoted-printable-hex-chars
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255 "][" quoted-printable-hex-chars "]"))
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256
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257 (defconst mime/Q-encoded-text-regexp
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258 (concat "\\([^=?]\\|" quoted-printable-octet-regexp "\\)+"))
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259 (defconst mime/Q-encoding-and-encoded-text-regexp
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260 (concat "\\(Q\\)\\?" mime/Q-encoded-text-regexp))
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261
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262
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263 ;;; @ rot13-47
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264 ;;;
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265 ;; caesar-region written by phr@prep.ai.mit.edu Nov 86
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266 ;; modified by tower@prep Nov 86
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267 ;; gnus-caesar-region
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268 ;; Modified by umerin@flab.flab.Fujitsu.JUNET for ROT47.
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269 (defun tm:caesar-region (&optional n)
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270 "Caesar rotation of region by N, default 13, for decrypting netnews.
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271 ROT47 will be performed for Japanese text in any case."
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272 (interactive (if current-prefix-arg ; Was there a prefix arg?
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273 (list (prefix-numeric-value current-prefix-arg))
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274 (list nil)))
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275 (cond ((not (numberp n)) (setq n 13))
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276 (t (setq n (mod n 26)))) ;canonicalize N
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277 (if (not (zerop n)) ; no action needed for a rot of 0
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278 (progn
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279 (if (or (not (boundp 'caesar-translate-table))
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280 (/= (aref caesar-translate-table ?a) (+ ?a n)))
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281 (let ((i 0) (lower "abcdefghijklmnopqrstuvwxyz") upper)
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282 (message "Building caesar-translate-table...")
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283 (setq caesar-translate-table (make-vector 256 0))
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284 (while (< i 256)
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285 (aset caesar-translate-table i i)
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286 (setq i (1+ i)))
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287 (setq lower (concat lower lower) upper (upcase lower) i 0)
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288 (while (< i 26)
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289 (aset caesar-translate-table (+ ?a i) (aref lower (+ i n)))
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290 (aset caesar-translate-table (+ ?A i) (aref upper (+ i n)))
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291 (setq i (1+ i)))
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292 ;; ROT47 for Japanese text.
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293 ;; Thanks to ichikawa@flab.fujitsu.junet.
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294 (setq i 161)
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295 (let ((t1 (logior ?O 128))
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296 (t2 (logior ?! 128))
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297 (t3 (logior ?~ 128)))
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298 (while (< i 256)
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299 (aset caesar-translate-table i
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300 (let ((v (aref caesar-translate-table i)))
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301 (if (<= v t1) (if (< v t2) v (+ v 47))
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302 (if (<= v t3) (- v 47) v))))
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303 (setq i (1+ i))))
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304 (message "Building caesar-translate-table...done")))
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305 (let ((from (region-beginning))
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306 (to (region-end))
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307 (i 0) str len)
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308 (setq str (buffer-substring from to))
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309 (setq len (length str))
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310 (while (< i len)
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311 (aset str i (aref caesar-translate-table (aref str i)))
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312 (setq i (1+ i)))
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313 (goto-char from)
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314 (delete-region from to)
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315 (insert str)))))
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316
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317
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318 ;;; @ field
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319 ;;;
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320
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321 (defun tm:set-fields (sym field-list &optional regexp-sym)
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322 (or regexp-sym
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323 (setq regexp-sym
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324 (let ((name (symbol-name sym)))
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325 (intern
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326 (concat (if (string-match "\\(.*\\)-list" name)
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327 (substring name 0 (match-end 1))
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328 name)
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329 "-regexp")
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330 )))
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331 )
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332 (set sym field-list)
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333 (set regexp-sym
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334 (concat "^" (apply (function regexp-or) field-list) ":"))
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335 )
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336
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337 (defun tm:add-fields (sym field-list &optional regexp-sym)
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338 (or regexp-sym
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339 (setq regexp-sym
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340 (let ((name (symbol-name sym)))
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341 (intern
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342 (concat (if (string-match "\\(.*\\)-list" name)
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343 (substring name 0 (match-end 1))
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344 name)
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345 "-regexp")
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346 )))
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347 )
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348 (let ((fields (eval sym)))
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349 (mapcar (function
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350 (lambda (field)
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351 (or (member field fields)
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352 (setq fields (cons field fields))
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353 )
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354 ))
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355 (reverse field-list)
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356 )
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357 (set regexp-sym
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358 (concat "^" (apply (function regexp-or) fields) ":"))
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359 (set sym fields)
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360 ))
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361
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362 (defun tm:delete-fields (sym field-list &optional regexp-sym)
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363 (or regexp-sym
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364 (setq regexp-sym
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365 (let ((name (symbol-name sym)))
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366 (intern
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367 (concat (if (string-match "\\(.*\\)-list" name)
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368 (substring name 0 (match-end 1))
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369 name)
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370 "-regexp")
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371 )))
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372 )
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373 (let ((fields (eval sym)))
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374 (mapcar (function
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375 (lambda (field)
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376 (setq fields (delete field fields))
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377 ))
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378 field-list)
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379 (set regexp-sym
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380 (concat "^" (apply (function regexp-or) fields) ":"))
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381 (set sym fields)
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382 ))
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383
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384
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385 ;;; @ end
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386 ;;;
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387
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388 (provide 'tm-def)
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389
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390 ;;; tm-def.el ends here
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