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1 ;;; mm.el,v --- Mailcap parsing routines, and MIME handling
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2 ;; Author: wmperry
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3 ;; Created: 1996/05/28 02:46:51
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4 ;; Version: 1.96
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5 ;; Keywords: mail, news, hypermedia
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6
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7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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8 ;;;
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9 ;;; Copyright (c) 1994, 1995 by William M. Perry (wmperry@spry.com)
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10 ;;;
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11 ;;; This file is not part of GNU Emacs, but the same permissions apply.
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12 ;;;
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13 ;;; GNU Emacs is free software; you can redistribute it and/or modify
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14 ;;; it under the terms of the GNU General Public License as published by
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15 ;;; the Free Software Foundation; either version 2, or (at your option)
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16 ;;; any later version.
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17 ;;;
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18 ;;; GNU Emacs is distributed in the hope that it will be useful,
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19 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 ;;; GNU General Public License for more details.
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22 ;;;
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23 ;;; You should have received a copy of the GNU General Public License
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24 ;;; along with GNU Emacs; see the file COPYING. If not, write to
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25 ;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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26 ;;;
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27 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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28 ;;; Generalized mailcap parsing and access routines
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29 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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30 ;;;
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31 ;;; Data structures
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32 ;;; ---------------
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33 ;;; The mailcap structure is an assoc list of assoc lists.
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34 ;;; 1st assoc list is keyed on the major content-type
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35 ;;; 2nd assoc list is keyed on the minor content-type (which can be a regexp)
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36 ;;;
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37 ;;; Which looks like:
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38 ;;; -----------------
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39 ;;; (
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40 ;;; ("application"
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41 ;;; ("postscript" . <info>)
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42 ;;; )
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43 ;;; ("text"
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44 ;;; ("plain" . <info>)
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45 ;;; )
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46 ;;; )
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47 ;;;
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48 ;;; Where <info> is another assoc list of the various information
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49 ;;; related to the mailcap RFC. This is keyed on the lowercase
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50 ;;; attribute name (viewer, test, etc). This looks like:
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51 ;;; (("viewer" . viewerinfo)
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52 ;;; ("test" . testinfo)
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53 ;;; ("xxxx" . "string")
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54 ;;; )
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55 ;;;
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56 ;;; Where viewerinfo specifies how the content-type is viewed. Can be
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57 ;;; a string, in which case it is run through a shell, with
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58 ;;; appropriate parameters, or a symbol, in which case the symbol is
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59 ;;; funcall'd, with the buffer as an argument.
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60 ;;;
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61 ;;; testinfo is a list of strings, or nil. If nil, it means the
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62 ;;; viewer specified is always valid. If it is a list of strings,
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63 ;;; these are used to determine whether a viewer passes the 'test' or
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64 ;;; not.
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65 ;;;
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66 ;;; The main interface to this code is:
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67 ;;;
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68 ;;; To set everything up:
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69 ;;;
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70 ;;; (mm-parse-mailcaps [path])
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71 ;;;
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72 ;;; Where PATH is a unix-style path specification (: separated list
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73 ;;; of strings). If PATH is nil, the environment variable MAILCAPS
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74 ;;; will be consulted. If there is no environment variable, then a
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75 ;;; default list of paths is used.
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76 ;;;
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77 ;;; To retrieve the information:
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78 ;;; (mm-mime-info st [nd] [request])
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79 ;;;
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80 ;;; Where st and nd are positions in a buffer that contain the
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81 ;;; content-type header information of a mail/news/whatever message.
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82 ;;; st can optionally be a string that contains the content-type
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83 ;;; information.
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84 ;;;
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85 ;;; Third argument REQUEST specifies what information to return. If
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86 ;;; it is nil or the empty string, the viewer (second field of the
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87 ;;; mailcap entry) will be returned. If it is a string, then the
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88 ;;; mailcap field corresponding to that string will be returned
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89 ;;; (print, description, whatever). If a number, then all the
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90 ;;; information for this specific viewer is returned.
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91 ;;;
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92 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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93 ;;; Variables, etc
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94 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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95 (defconst mm-version (let ((x "1.96"))
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96 (if (string-match "Revision: \\([^ \t\n]+\\)" x)
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97 (substring x (match-beginning 1) (match-end 1))
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98 x))
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99 "Version # of MM package")
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100
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101 (defvar mm-parse-args-syntax-table
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102 (copy-syntax-table emacs-lisp-mode-syntax-table)
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103 "A syntax table for parsing sgml attributes.")
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104
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105 (modify-syntax-entry ?' "\"" mm-parse-args-syntax-table)
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106 (modify-syntax-entry ?` "\"" mm-parse-args-syntax-table)
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107 (modify-syntax-entry ?{ "(" mm-parse-args-syntax-table)
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108 (modify-syntax-entry ?} ")" mm-parse-args-syntax-table)
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109
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110 ;;; This is so we can use a consistent method of checking for mule support
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111 ;;; Emacs-based mule uses (boundp 'MULE), but XEmacs-based mule uses
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112 ;;; (featurep 'mule) - I choose to use the latter.
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113
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114 (if (boundp 'MULE)
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115 (provide 'mule))
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116
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117 (defvar mm-mime-data
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118 '(
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119 ("multipart" . (
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120 ("alternative". (("viewer" . mm-multipart-viewer)
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121 ("type" . "multipart/alternative")))
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122 ("mixed" . (("viewer" . mm-multipart-viewer)
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123 ("type" . "multipart/mixed")))
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124 (".*" . (("viewer" . mm-save-binary-file)
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125 ("type" . "multipart/*")))
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126 )
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127 )
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128 ("application" . (
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129 ("octet-stream" . (("viewer" . mm-save-binary-file)
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130 ("type" ."application/octet-stream")))
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131 ("dvi" . (("viewer" . "open %s")
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132 ("type" . "application/dvi")
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133 ("test" . (eq (device-type) 'ns))))
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134 ("dvi" . (("viewer" . "xdvi %s")
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135 ("test" . (eq (device-type) 'x))
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136 ("needsx11")
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137 ("type" . "application/dvi")))
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138 ("dvi" . (("viewer" . "dvitty %s")
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139 ("test" . (not (getenv "DISPLAY")))
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140 ("type" . "application/dvi")))
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141 ("emacs-lisp" . (("viewer" . mm-maybe-eval)
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142 ("type" . "application/emacs-lisp")))
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143 ; ("x-tar" . (("viewer" . tar-mode)
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144 ; ("test" . (fboundp 'tar-mode))
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145 ; ("type" . "application/x-tar")))
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146 ("x-tar" . (("viewer" . mm-save-binary-file)
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147 ("type" . "application/x-tar")))
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148 ("x-latex" . (("viewer" . tex-mode)
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149 ("test" . (fboundp 'tex-mode))
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150 ("type" . "application/x-latex")))
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151 ("x-tex" . (("viewer" . tex-mode)
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152 ("test" . (fboundp 'tex-mode))
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153 ("type" . "application/x-tex")))
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154 ("latex" . (("viewer" . tex-mode)
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155 ("test" . (fboundp 'tex-mode))
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156 ("type" . "application/latex")))
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157 ("tex" . (("viewer" . tex-mode)
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158 ("test" . (fboundp 'tex-mode))
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159 ("type" . "application/tex")))
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160 ("texinfo" . (("viewer" . texinfo-mode)
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161 ("test" . (fboundp 'texinfo-mode))
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162 ("type" . "application/tex")))
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163 ("zip" . (("viewer" . mm-save-binary-file)
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164 ("type" . "application/zip")
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165 ("copiousoutput")))
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166 ("pdf" . (("viewer" . "acroread %s")
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167 ("type" . "application/pdf")))
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168 ("postscript" . (("viewer" . "open %s")
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169 ("type" . "application/postscript")
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170 ("test" . (eq (device-type) 'ns))))
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171 ("postscript" . (("viewer" . "ghostview %s")
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172 ("type" . "application/postscript")
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173 ("test" . (eq (device-type) 'x))
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174 ("needsx11")))
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175 ("postscript" . (("viewer" . "ps2ascii %s")
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176 ("type" . "application/postscript")
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177 ("test" . (not (getenv "DISPLAY")))
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178 ("copiousoutput")))
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179 ("x-www-pem-reply" .
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180 (("viewer" . (w3-decode-pgp/pem "pem"))
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181 ("test" . (fboundp 'w3-decode-pgp/pem))
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182 ("type" . "application/x-www-pem-reply")
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183 ))
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184 ("x-www-pgp-reply" .
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185 (("viewer" . (w3-decode-pgp/pem "pgp"))
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186 ("test" . (fboundp 'w3-decode-pgp/pem))
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187 ("type" . "application/x-www-pgp-reply")))
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188 ))
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189 ("audio" . (
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190 ("x-mpeg" . (("viewer" . "maplay %s")
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191 ("type" . "audio/x-mpeg")))
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192 (".*" . (("viewer" . mm-play-sound-file)
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193 ("test" . (or (featurep 'nas-sound)
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194 (featurep 'native-sound)))
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195 ("type" . "audio/*")))
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196 (".*" . (("viewer" . "showaudio")
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197 ("type" . "audio/*")))
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198 ))
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199 ("message" . (
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200 ("rfc-*822" . (("viewer" . vm-mode)
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201 ("test" . (fboundp 'vm-mode))
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202 ("type" . "message/rfc-822")))
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203 ("rfc-*822" . (("viewer" . w3-mode)
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204 ("test" . (fboundp 'w3-mode))
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205 ("type" . "message/rfc-822")))
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206 ("rfc-*822" . (("viewer" . view-mode)
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207 ("test" . (fboundp 'view-mode))
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208 ("type" . "message/rfc-822")))
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209 ("rfc-*822" . (("viewer" . fundamental-mode)
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210 ("type" . "message/rfc-822")))
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211 ))
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212 ("image" . (
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213 ("x-xwd" . (("viewer" . "xwud -in %s")
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214 ("type" . "image/x-xwd")
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215 ("compose" . "xwd -frame > %s")
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216 ("test" . (eq (device-type) 'x))
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217 ("needsx11")))
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218 ("x11-dump" . (("viewer" . "xwud -in %s")
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219 ("type" . "image/x-xwd")
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220 ("compose" . "xwd -frame > %s")
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221 ("test" . (eq (device-type) 'x))
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222 ("needsx11")))
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223 ("windowdump" . (("viewer" . "xwud -in %s")
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224 ("type" . "image/x-xwd")
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225 ("compose" . "xwd -frame > %s")
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226 ("test" . (eq (device-type) 'x))
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227 ("needsx11")))
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228 (".*" . (("viewer" . "open %s")
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229 ("type" . "image/*")
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230 ("test" . (eq (device-type) 'ns))))
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231 (".*" . (("viewer" . "xv -perfect %s")
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232 ("type" . "image/*")
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233 ("test" . (eq (device-type) 'x))
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234 ("needsx11")))
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235 ))
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236 ("text" . (
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237 ("plain" . (("viewer" . w3-mode)
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238 ("test" . (fboundp 'w3-mode))
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239 ("type" . "text/plain")))
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240 ("plain" . (("viewer" . view-mode)
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241 ("test" . (fboundp 'view-mode))
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242 ("type" . "text/plain")))
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243 ("plain" . (("viewer" . fundamental-mode)
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244 ("type" . "text/plain")))
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245 ("enriched" . (("viewer" . enriched-decode-region)
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246 ("test" . (fboundp
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247 'enriched-decode-region))
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248 ("type" . "text/enriched")))
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249 ("html" . (("viewer" . w3-prepare-buffer)
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250 ("test" . (fboundp 'w3-prepare-buffer))
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251 ("type" . "text/html")))
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252 ))
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253 ("video" . (
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254 ("mpeg" . (("viewer" . "mpeg_play %s")
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255 ("type" . "video/mpeg")
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256 ("test" . (eq (device-type) 'x))
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257 ("needsx11")))
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258 ))
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259 ("x-world" . (
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260 ("x-vrml" . (("viewer" . "webspace -remote %s -URL %u")
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261 ("type" . "x-world/x-vrml")
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262 ("description"
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263 "VRML document")))))
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264 ("archive" . (
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265 ("tar" . (("viewer" . tar-mode)
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266 ("type" . "archive/tar")
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267 ("test" . (fboundp 'tar-mode))))
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268 ))
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269 )
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270 "*The mailcap structure is an assoc list of assoc lists.
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271 1st assoc list is keyed on the major content-type
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272 2nd assoc list is keyed on the minor content-type (which can be a regexp)
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273
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274 Which looks like:
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275 -----------------
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276 (
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277 (\"application\"
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278 (\"postscript\" . <info>)
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279 )
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280 (\"text\"
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281 (\"plain\" . <info>)
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282 )
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283 )
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284
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285 Where <info> is another assoc list of the various information
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286 related to the mailcap RFC. This is keyed on the lowercase
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287 attribute name (viewer, test, etc). This looks like:
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288 ((\"viewer\" . viewerinfo)
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289 (\"test\" . testinfo)
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290 (\"xxxx\" . \"string\")
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291 )
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292
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293 Where viewerinfo specifies how the content-type is viewed. Can be
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294 a string, in which case it is run through a shell, with
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295 appropriate parameters, or a symbol, in which case the symbol is
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296 funcall'd, with the buffer as an argument.
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297
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298 testinfo is a list of strings, or nil. If nil, it means the
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299 viewer specified is always valid. If it is a list of strings,
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300 these are used to determine whether a viewer passes the 'test' or
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301 not.")
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302
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303 (defvar mm-content-transfer-encodings
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304 '(("base64" . base64-decode)
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305 ("7bit" . ignore)
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306 ("8bit" . ignore)
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307 ("binary" . ignore)
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308 ("x-compress" . ("uncompress" "-c"))
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309 ("x-gzip" . ("gzip" "-dc"))
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310 ("compress" . ("uncompress" "-c"))
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311 ("gzip" . ("gzip" "-dc"))
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312 ("x-hqx" . ("mcvert" "-P" "-s" "-S"))
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313 ("quoted-printable" . mm-decode-quoted-printable)
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314 )
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315 "*An assoc list of content-transfer-encodings and how to decode them.")
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316
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317 (defvar mm-download-directory nil
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318 "*Where downloaded files should go by default.")
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319
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320 (defvar mm-temporary-directory "/tmp"
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321 "*Where temporary files go.")
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322
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323
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324 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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325 ;;; A few things from w3 and url, just in case this is used without them
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326 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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327
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328 (defun mm-generate-unique-filename (&optional fmt)
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329 "Generate a unique filename in mm-temporary-directory"
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330 (if (not fmt)
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331 (let ((base (format "mm-tmp.%d" (user-real-uid)))
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332 (fname "")
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333 (x 0))
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334 (setq fname (format "%s%d" base x))
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335 (while (file-exists-p
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336 (expand-file-name fname mm-temporary-directory))
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337 (setq x (1+ x)
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338 fname (concat base (int-to-string x))))
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339 (expand-file-name fname mm-temporary-directory))
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340 (let ((base (concat "mm" (int-to-string (user-real-uid))))
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341 (fname "")
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342 (x 0))
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343 (setq fname (format fmt (concat base (int-to-string x))))
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344 (while (file-exists-p
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345 (expand-file-name fname mm-temporary-directory))
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346 (setq x (1+ x)
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347 fname (format fmt (concat base (int-to-string x)))))
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348 (expand-file-name fname mm-temporary-directory))))
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349
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350 (if (not (fboundp 'copy-tree))
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351 (defun copy-tree (tree)
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352 (if (consp tree)
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353 (cons (copy-tree (car tree))
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354 (copy-tree (cdr tree)))
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355 (if (vectorp tree)
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356 (let* ((new (copy-sequence tree))
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357 (i (1- (length new))))
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358 (while (>= i 0)
|
|
|
359 (aset new i (copy-tree (aref new i)))
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|
|
360 (setq i (1- i)))
|
|
|
361 new)
|
|
|
362 tree))))
|
|
|
363
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|
|
364 (if (not (fboundp 'w3-save-binary-file))
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|
|
365 (defun mm-save-binary-file ()
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366 (let ((x (read-file-name "Filename to save as: "
|
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367 (or mm-download-directory "~/")))
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368 (require-final-newline nil))
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|
369 (save-excursion
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|
370 (if (featurep 'mule)
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371 (let ((mc-flag t))
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|
372 (write-region (point-min) (point-max) x nil nil *noconv*))
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373 (write-region (point-min) (point-max) x))
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|
374 (kill-buffer (current-buffer)))))
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|
375 (fset 'mm-save-binary-file 'w3-save-binary-file))
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376
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|
377 (if (not (fboundp 'w3-maybe-eval))
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|
378 (defun mm-maybe-eval ()
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|
379 "Maybe evaluate a buffer of emacs lisp code"
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380 (if (yes-or-no-p "This is emacs-lisp code, evaluate it? ")
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|
381 (eval-buffer (current-buffer))
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|
382 (emacs-lisp-mode)))
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|
|
383 (fset 'mm-maybe-eval 'w3-maybe-eval))
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|
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384
|
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385
|
|
|
386 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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|
|
387 ;;; The mailcap parser
|
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|
388 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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|
389 (defun mm-in-assoc (elt list)
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390 ;; Check to see if ELT matches any of the regexps in the car elements of LIST
|
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|
391 (let (rslt)
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|
392 (while (and list (not rslt))
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393 (and (car (car list))
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|
394 (string-match (car (car list)) elt)
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|
395 (setq rslt (car list)))
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|
396 (setq list (cdr list)))
|
|
|
397 rslt))
|
|
|
398
|
|
|
399 (defun mm-replace-regexp (regexp to-string)
|
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|
400 ;; Quiet replace-regexp.
|
|
|
401 (goto-char (point-min))
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|
402 (while (re-search-forward regexp nil t)
|
|
|
403 (replace-match to-string t nil)))
|
|
|
404
|
|
|
405 (defun mm-parse-mailcaps (&optional path)
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|
|
406 ;; Parse out all the mailcaps specified in a unix-style path string PATH
|
|
|
407 (cond
|
|
|
408 (path nil)
|
|
|
409 ((getenv "MAILCAPS") (setq path (getenv "MAILCAPS")))
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|
|
410 ((memq system-type '(ms-dos ms-windows windows-nt))
|
|
|
411 (setq path (mapconcat 'expand-file-name '("~/mail.cap" "~/etc/mail.cap")
|
|
|
412 ";")))
|
|
|
413 (t (setq path (concat "/etc/mailcap:/usr/etc/mailcap:"
|
|
|
414 "/usr/local/etc/mailcap:"
|
|
|
415 (expand-file-name "~/.mailcap")))))
|
|
|
416 (let ((fnames (mm-string-to-tokens path
|
|
|
417 (if (memq system-type
|
|
|
418 '(ms-dos ms-windows windows-nt))
|
|
|
419 ?;
|
|
|
420 ?:))) fname)
|
|
|
421 (while fnames
|
|
|
422 (setq fname (car fnames))
|
|
|
423 (if (and (file-exists-p fname) (file-readable-p fname))
|
|
|
424 (mm-parse-mailcap (car fnames)))
|
|
|
425 (setq fnames (cdr fnames)))))
|
|
|
426
|
|
|
427 (defun mm-parse-mailcap (fname)
|
|
|
428 ;; Parse out the mailcap file specified by FNAME
|
|
|
429 (let (major ; The major mime type (image/audio/etc)
|
|
|
430 minor ; The minor mime type (gif, basic, etc)
|
|
|
431 save-pos ; Misc saved positions used in parsing
|
|
|
432 viewer ; How to view this mime type
|
|
|
433 info ; Misc info about this mime type
|
|
|
434 )
|
|
|
435 (save-excursion
|
|
|
436 (set-buffer (get-buffer-create " *mailcap*"))
|
|
|
437 (erase-buffer)
|
|
|
438 (insert-file-contents fname)
|
|
|
439 (set-syntax-table mm-parse-args-syntax-table)
|
|
|
440 (mm-replace-regexp "#.*" "") ; Remove all comments
|
|
|
441 (mm-replace-regexp "\n+" "\n") ; And blank lines
|
|
|
442 (mm-replace-regexp "\\\\[ \t\n]+" " ") ; And collapse spaces
|
|
|
443 (mm-replace-regexp (concat (regexp-quote "\\") "[ \t]*\n") "")
|
|
|
444 (goto-char (point-max))
|
|
|
445 (skip-chars-backward " \t\n")
|
|
|
446 (delete-region (point) (point-max))
|
|
|
447 (goto-char (point-min))
|
|
|
448 (while (not (eobp))
|
|
|
449 (skip-chars-forward " \t\n")
|
|
|
450 (setq save-pos (point)
|
|
|
451 info nil)
|
|
|
452 (skip-chars-forward "^/;")
|
|
|
453 (downcase-region save-pos (point))
|
|
|
454 (setq major (buffer-substring save-pos (point)))
|
|
|
455 (skip-chars-forward "/ \t\n")
|
|
|
456 (setq save-pos (point))
|
|
|
457 (skip-chars-forward "^;")
|
|
|
458 (downcase-region save-pos (point))
|
|
|
459 (setq minor
|
|
|
460 (cond
|
|
|
461 ((= ?* (or (char-after save-pos) 0)) ".*")
|
|
|
462 ((= (point) save-pos) ".*")
|
|
|
463 (t (buffer-substring save-pos (point)))))
|
|
|
464 (skip-chars-forward "; \t\n")
|
|
|
465 ;;; Got the major/minor chunks, now for the viewers/etc
|
|
|
466 ;;; The first item _must_ be a viewer, according to the
|
|
|
467 ;;; RFC for mailcap files (#1343)
|
|
|
468 (skip-chars-forward "; \t\n")
|
|
|
469 (setq save-pos (point))
|
|
|
470 (skip-chars-forward "^;\n")
|
|
|
471 (if (= (or (char-after save-pos) 0) ?')
|
|
|
472 (setq viewer (progn
|
|
|
473 (narrow-to-region (1+ save-pos) (point))
|
|
|
474 (goto-char (point-min))
|
|
|
475 (prog1
|
|
|
476 (read (current-buffer))
|
|
|
477 (goto-char (point-max))
|
|
|
478 (widen))))
|
|
|
479 (setq viewer (buffer-substring save-pos (point))))
|
|
|
480 (setq save-pos (point))
|
|
|
481 (end-of-line)
|
|
|
482 (setq info (nconc (list (cons "viewer" viewer)
|
|
|
483 (cons "type" (concat major "/"
|
|
|
484 (if (string= minor ".*")
|
|
|
485 "*" minor))))
|
|
|
486 (mm-parse-mailcap-extras save-pos (point))))
|
|
|
487 (mm-mailcap-entry-passes-test info)
|
|
|
488 (mm-add-mailcap-entry major minor info)))))
|
|
|
489
|
|
|
490 (defun mm-parse-mailcap-extras (st nd)
|
|
|
491 ;; Grab all the extra stuff from a mailcap entry
|
|
|
492 (let (
|
|
|
493 name ; From name=
|
|
|
494 value ; its value
|
|
|
495 results ; Assoc list of results
|
|
|
496 name-pos ; Start of XXXX= position
|
|
|
497 val-pos ; Start of value position
|
|
|
498 done ; Found end of \'d ;s?
|
|
|
499 )
|
|
|
500 (save-restriction
|
|
|
501 (narrow-to-region st nd)
|
|
|
502 (goto-char (point-min))
|
|
|
503 (skip-chars-forward " \n\t;")
|
|
|
504 (while (not (eobp))
|
|
|
505 (setq done nil)
|
|
|
506 (skip-chars-forward " \";\n\t")
|
|
|
507 (setq name-pos (point))
|
|
|
508 (skip-chars-forward "^ \n\t=")
|
|
|
509 (downcase-region name-pos (point))
|
|
|
510 (setq name (buffer-substring name-pos (point)))
|
|
|
511 (skip-chars-forward " \t\n")
|
|
|
512 (if (/= (or (char-after (point)) 0) ?=) ; There is no value
|
|
|
513 (setq value nil)
|
|
|
514 (skip-chars-forward " \t\n=")
|
|
|
515 (setq val-pos (point))
|
|
|
516 (if (memq (char-after val-pos) '(?\" ?'))
|
|
|
517 (progn
|
|
|
518 (setq val-pos (1+ val-pos))
|
|
|
519 (condition-case nil
|
|
|
520 (progn
|
|
|
521 (forward-sexp 1)
|
|
|
522 (backward-char 1))
|
|
|
523 (error (goto-char (point-max)))))
|
|
|
524 (while (not done)
|
|
|
525 (skip-chars-forward "^;")
|
|
|
526 (if (= (or (char-after (1- (point))) 0) ?\\ )
|
|
|
527 (progn
|
|
|
528 (subst-char-in-region (1- (point)) (point) ?\\ ? )
|
|
|
529 (skip-chars-forward ";"))
|
|
|
530 (setq done t))))
|
|
|
531 (setq value (buffer-substring val-pos (point))))
|
|
|
532 (setq results (cons (cons name value) results)))
|
|
|
533 results)))
|
|
|
534
|
|
|
535 (defun mm-string-to-tokens (str &optional delim)
|
|
|
536 "Return a list of words from the string STR"
|
|
|
537 (setq delim (or delim ? ))
|
|
|
538 (let (results y)
|
|
|
539 (mapcar
|
|
|
540 (function
|
|
|
541 (lambda (x)
|
|
|
542 (cond
|
|
|
543 ((and (= x delim) y) (setq results (cons y results) y nil))
|
|
|
544 ((/= x delim) (setq y (concat y (char-to-string x))))
|
|
|
545 (t nil)))) str)
|
|
|
546 (nreverse (cons y results))))
|
|
|
547
|
|
|
548 (defun mm-mailcap-entry-passes-test (info)
|
|
|
549 ;; Return t iff a mailcap entry passes its test clause or no test
|
|
|
550 ;; clause is present.
|
|
|
551 (let (status ; Call-process-regions return value
|
|
|
552 (test (assoc "test" info)); The test clause
|
|
|
553 )
|
|
|
554 (setq status (and test (mm-string-to-tokens (cdr test))))
|
|
|
555 (if (and (assoc "needsx11" info) (not (getenv "DISPLAY")))
|
|
|
556 (setq status nil)
|
|
|
557 (cond
|
|
|
558 ((and (equal (nth 0 status) "test")
|
|
|
559 (equal (nth 1 status) "-n")
|
|
|
560 (or (equal (nth 2 status) "$DISPLAY")
|
|
|
561 (equal (nth 2 status) "\"$DISPLAY\"")))
|
|
|
562 (setq status (if (getenv "DISPLAY") t nil)))
|
|
|
563 ((and (equal (nth 0 status) "test")
|
|
|
564 (equal (nth 1 status) "-z")
|
|
|
565 (or (equal (nth 2 status) "$DISPLAY")
|
|
|
566 (equal (nth 2 status) "\"$DISPLAY\"")))
|
|
|
567 (setq status (if (getenv "DISPLAY") nil t)))
|
|
|
568 (test nil)
|
|
|
569 (t nil)))
|
|
|
570 (and test (listp test) (setcdr test status))))
|
|
|
571
|
|
|
572 (defun mm-parse-args (st &optional nd nodowncase)
|
|
|
573 ;; Return an assoc list of attribute/value pairs from an RFC822-type string
|
|
|
574 (let (
|
|
|
575 name ; From name=
|
|
|
576 value ; its value
|
|
|
577 results ; Assoc list of results
|
|
|
578 name-pos ; Start of XXXX= position
|
|
|
579 val-pos ; Start of value position
|
|
|
580 )
|
|
|
581 (save-excursion
|
|
|
582 (if (stringp st)
|
|
|
583 (progn
|
|
|
584 (set-buffer (get-buffer-create " *mm-temp*"))
|
|
|
585 (set-syntax-table mm-parse-args-syntax-table)
|
|
|
586 (erase-buffer)
|
|
|
587 (insert st)
|
|
|
588 (setq st (point-min)
|
|
|
589 nd (point-max)))
|
|
|
590 (set-syntax-table mm-parse-args-syntax-table))
|
|
|
591 (save-restriction
|
|
|
592 (narrow-to-region st nd)
|
|
|
593 (goto-char (point-min))
|
|
|
594 (while (not (eobp))
|
|
|
595 (skip-chars-forward "; \n\t")
|
|
|
596 (setq name-pos (point))
|
|
|
597 (skip-chars-forward "^ \n\t=;")
|
|
|
598 (if (not nodowncase)
|
|
|
599 (downcase-region name-pos (point)))
|
|
|
600 (setq name (buffer-substring name-pos (point)))
|
|
|
601 (skip-chars-forward " \t\n")
|
|
|
602 (if (/= (or (char-after (point)) 0) ?=) ; There is no value
|
|
|
603 (setq value nil)
|
|
|
604 (skip-chars-forward " \t\n=")
|
|
|
605 (setq val-pos (point)
|
|
|
606 value
|
|
|
607 (cond
|
|
|
608 ((or (= (or (char-after val-pos) 0) ?\")
|
|
|
609 (= (or (char-after val-pos) 0) ?'))
|
|
|
610 (buffer-substring (1+ val-pos)
|
|
|
611 (condition-case ()
|
|
|
612 (prog2
|
|
|
613 (forward-sexp 1)
|
|
|
614 (1- (point))
|
|
|
615 (skip-chars-forward "\""))
|
|
|
616 (error
|
|
|
617 (skip-chars-forward "^ \t\n")
|
|
|
618 (point)))))
|
|
|
619 (t
|
|
|
620 (buffer-substring val-pos
|
|
|
621 (progn
|
|
|
622 (skip-chars-forward "^;")
|
|
|
623 (skip-chars-backward " \t")
|
|
|
624 (point)))))))
|
|
|
625 (setq results (cons (cons name value) results))
|
|
|
626 (skip-chars-forward "; \n\t"))
|
|
|
627 results))))
|
|
|
628
|
|
|
629 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
630 ;;; The action routines.
|
|
|
631 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
632 (defun mm-possible-viewers (major minor)
|
|
|
633 ;; Return a list of possible viewers from MAJOR for minor type MINOR
|
|
|
634 (let ((exact '())
|
|
|
635 (wildcard '()))
|
|
|
636 (while major
|
|
|
637 (cond
|
|
|
638 ((equal (car (car major)) minor)
|
|
|
639 (setq exact (cons (cdr (car major)) exact)))
|
|
|
640 ((string-match (car (car major)) minor)
|
|
|
641 (setq wildcard (cons (cdr (car major)) wildcard))))
|
|
|
642 (setq major (cdr major)))
|
|
|
643 (nconc (nreverse exact) (nreverse wildcard))))
|
|
|
644
|
|
|
645 (defun mm-unescape-mime-test (test type-info)
|
|
|
646 (let ((buff (get-buffer-create " *unescape*"))
|
|
|
647 save-pos save-chr subst)
|
|
|
648 (cond
|
|
|
649 ((symbolp test) test)
|
|
|
650 ((and (listp test) (symbolp (car test))) test)
|
|
|
651 ((or (stringp test)
|
|
|
652 (and (listp test) (stringp (car test))
|
|
|
653 (setq test (mapconcat 'identity test " "))))
|
|
|
654 (save-excursion
|
|
|
655 (set-buffer buff)
|
|
|
656 (erase-buffer)
|
|
|
657 (insert test)
|
|
|
658 (goto-char (point-min))
|
|
|
659 (while (not (eobp))
|
|
|
660 (skip-chars-forward "^%")
|
|
|
661 (if (/= (- (point)
|
|
|
662 (progn (skip-chars-backward "\\\\")
|
|
|
663 (point)))
|
|
|
664 0) ; It is an escaped %
|
|
|
665 (progn
|
|
|
666 (delete-char 1)
|
|
|
667 (skip-chars-forward "%."))
|
|
|
668 (setq save-pos (point))
|
|
|
669 (skip-chars-forward "%")
|
|
|
670 (setq save-chr (char-after (point)))
|
|
|
671 (cond
|
|
|
672 ((null save-chr) nil)
|
|
|
673 ((= save-chr ?t)
|
|
|
674 (delete-region save-pos (progn (forward-char 1) (point)))
|
|
|
675 (insert (or (cdr (assoc "type" type-info)) "\"\"")))
|
|
|
676 ((= save-chr ?M)
|
|
|
677 (delete-region save-pos (progn (forward-char 1) (point)))
|
|
|
678 (insert "\"\""))
|
|
|
679 ((= save-chr ?n)
|
|
|
680 (delete-region save-pos (progn (forward-char 1) (point)))
|
|
|
681 (insert "\"\""))
|
|
|
682 ((= save-chr ?F)
|
|
|
683 (delete-region save-pos (progn (forward-char 1) (point)))
|
|
|
684 (insert "\"\""))
|
|
|
685 ((= save-chr ?{)
|
|
|
686 (forward-char 1)
|
|
|
687 (skip-chars-forward "^}")
|
|
|
688 (downcase-region (+ 2 save-pos) (point))
|
|
|
689 (setq subst (buffer-substring (+ 2 save-pos) (point)))
|
|
|
690 (delete-region save-pos (1+ (point)))
|
|
|
691 (insert (or (cdr (assoc subst type-info)) "\"\"")))
|
|
|
692 (t nil))))
|
|
|
693 (buffer-string)))
|
|
|
694 (t (error "Bad value to mm-unescape-mime-test. %s" test)))))
|
|
|
695
|
|
|
696 (defun mm-viewer-passes-test (viewer-info type-info)
|
|
|
697 ;; Return non-nil iff the viewer specified by VIEWER-INFO passes its
|
|
|
698 ;; test clause (if any).
|
|
|
699 (let* ((test-info (assoc "test" viewer-info))
|
|
|
700 (test (cdr test-info))
|
|
|
701 (viewer (cdr (assoc "viewer" viewer-info)))
|
|
|
702 status
|
|
|
703 parsed-test
|
|
|
704 )
|
|
|
705 (cond
|
|
|
706 ((not test-info) t) ; No test clause
|
|
|
707 ((not test) nil) ; Already failed test
|
|
|
708 ((eq test t) t) ; Already passed test
|
|
|
709 ((and (symbolp test) ; Lisp function as test
|
|
|
710 (fboundp test))
|
|
|
711 (funcall test type-info))
|
|
|
712 ((and (symbolp test) ; Lisp variable as test
|
|
|
713 (boundp test))
|
|
|
714 (symbol-value test))
|
|
|
715 ((and (listp test) ; List to be eval'd
|
|
|
716 (symbolp (car test)))
|
|
|
717 (eval test))
|
|
|
718 (t
|
|
|
719 (setq test (mm-unescape-mime-test test type-info)
|
|
|
720 test (list "/bin/sh" nil nil nil "-c" test)
|
|
|
721 status (apply 'call-process test))
|
|
|
722 (= 0 status)))))
|
|
|
723
|
|
|
724 (defun mm-add-mailcap-entry (major minor info)
|
|
|
725 (let ((old-major (assoc major mm-mime-data)))
|
|
|
726 (if (null old-major) ; New major area
|
|
|
727 (setq mm-mime-data
|
|
|
728 (cons (cons major (list (cons minor info)))
|
|
|
729 mm-mime-data))
|
|
|
730 (let ((cur-minor (assoc minor old-major)))
|
|
|
731 (cond
|
|
|
732 ((or (null cur-minor) ; New minor area, or
|
|
|
733 (assoc "test" info)) ; Has a test, insert at beginning
|
|
|
734 (setcdr old-major (cons (cons minor info) (cdr old-major))))
|
|
|
735 ((and (not (assoc "test" info)); No test info, replace completely
|
|
|
736 (not (assoc "test" cur-minor)))
|
|
|
737 (setcdr cur-minor info))
|
|
|
738 (t
|
|
|
739 (setcdr old-major (cons (cons minor info) (cdr old-major)))))))))
|
|
|
740
|
|
|
741
|
|
|
742 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
743 ;;; The main whabbo
|
|
|
744 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
745 (defun mm-viewer-lessp (x y)
|
|
|
746 ;; Return t iff viewer X is more desirable than viewer Y
|
|
|
747 (let ((x-wild (string-match "[*?]" (or (cdr-safe (assoc "type" x)) "")))
|
|
|
748 (y-wild (string-match "[*?]" (or (cdr-safe (assoc "type" y)) "")))
|
|
|
749 (x-lisp (not (stringp (or (cdr-safe (assoc "viewer" x)) ""))))
|
|
|
750 (y-lisp (not (stringp (or (cdr-safe (assoc "viewer" y)) "")))))
|
|
|
751 (cond
|
|
|
752 ((and x-lisp (not y-lisp))
|
|
|
753 t)
|
|
|
754 ((and (not y-lisp) x-wild (not y-wild))
|
|
|
755 t)
|
|
|
756 ((and (not x-wild) y-wild)
|
|
|
757 t)
|
|
|
758 (t nil))))
|
|
|
759
|
|
|
760 (defun mm-mime-info (st &optional nd request)
|
|
|
761 "Get the mime viewer command for HEADERLINE, return nil if none found.
|
|
|
762 Expects a complete content-type header line as its argument. This can
|
|
|
763 be simple like text/html, or complex like text/plain; charset=blah; foo=bar
|
|
|
764
|
|
|
765 Third argument REQUEST specifies what information to return. If it is
|
|
|
766 nil or the empty string, the viewer (second field of the mailcap
|
|
|
767 entry) will be returned. If it is a string, then the mailcap field
|
|
|
768 corresponding to that string will be returned (print, description,
|
|
|
769 whatever). If a number, then all the information for this specific
|
|
|
770 viewer is returned."
|
|
|
771 (let (
|
|
|
772 major ; Major encoding (text, etc)
|
|
|
773 minor ; Minor encoding (html, etc)
|
|
|
774 info ; Other info
|
|
|
775 save-pos ; Misc. position during parse
|
|
|
776 major-info ; (assoc major mm-mime-data)
|
|
|
777 minor-info ; (assoc minor major-info)
|
|
|
778 test ; current test proc.
|
|
|
779 viewers ; Possible viewers
|
|
|
780 passed ; Viewers that passed the test
|
|
|
781 viewer ; The one and only viewer
|
|
|
782 )
|
|
|
783 (save-excursion
|
|
|
784 (cond
|
|
|
785 ((null st)
|
|
|
786 (set-buffer (get-buffer-create " *mimeparse*"))
|
|
|
787 (erase-buffer)
|
|
|
788 (insert "text/plain")
|
|
|
789 (setq st (point-min)))
|
|
|
790 ((stringp st)
|
|
|
791 (set-buffer (get-buffer-create " *mimeparse*"))
|
|
|
792 (erase-buffer)
|
|
|
793 (insert st)
|
|
|
794 (setq st (point-min)))
|
|
|
795 ((null nd)
|
|
|
796 (narrow-to-region st (progn (goto-char st) (end-of-line) (point))))
|
|
|
797 (t (narrow-to-region st nd)))
|
|
|
798 (goto-char st)
|
|
|
799 (skip-chars-forward ": \t\n")
|
|
|
800 (buffer-enable-undo)
|
|
|
801 (setq viewer
|
|
|
802 (catch 'mm-exit
|
|
|
803 (setq save-pos (point))
|
|
|
804 (skip-chars-forward "^/")
|
|
|
805 (downcase-region save-pos (point))
|
|
|
806 (setq major (buffer-substring save-pos (point)))
|
|
|
807 (if (not (setq major-info (cdr (assoc major mm-mime-data))))
|
|
|
808 (throw 'mm-exit nil))
|
|
|
809 (skip-chars-forward "/ \t\n")
|
|
|
810 (setq save-pos (point))
|
|
|
811 (skip-chars-forward "^ \t\n;")
|
|
|
812 (downcase-region save-pos (point))
|
|
|
813 (setq minor (buffer-substring save-pos (point)))
|
|
|
814 (if (not
|
|
|
815 (setq viewers (mm-possible-viewers major-info minor)))
|
|
|
816 (throw 'mm-exit nil))
|
|
|
817 (skip-chars-forward "; \t")
|
|
|
818 (if (eolp)
|
|
|
819 nil ; No qualifiers
|
|
|
820 (setq save-pos (point))
|
|
|
821 (end-of-line)
|
|
|
822 (setq info (mm-parse-args save-pos (point)))
|
|
|
823 )
|
|
|
824 (while viewers
|
|
|
825 (if (mm-viewer-passes-test (car viewers) info)
|
|
|
826 (setq passed (cons (car viewers) passed)))
|
|
|
827 (setq viewers (cdr viewers)))
|
|
|
828 (setq passed (sort (nreverse passed) 'mm-viewer-lessp))
|
|
|
829 (car passed)))
|
|
|
830 (if (and (stringp (cdr (assoc "viewer" viewer)))
|
|
|
831 passed)
|
|
|
832 (setq viewer (car passed)))
|
|
|
833 (widen)
|
|
|
834 (cond
|
|
|
835 ((and (null viewer) (not (equal major "default")))
|
|
|
836 (mm-mime-info "default" nil request))
|
|
|
837 ((or (null request) (equal request ""))
|
|
|
838 (mm-unescape-mime-test (cdr (assoc "viewer" viewer)) info))
|
|
|
839 ((stringp request)
|
|
|
840 (if (or (string= request "test") (string= request "viewer"))
|
|
|
841 (mm-unescape-mime-test (cdr-safe (assoc request viewer)) info)))
|
|
|
842 (t
|
|
|
843 ;; MUST make a copy *sigh*, else we modify mm-mime-data
|
|
|
844 (setq viewer (copy-tree viewer))
|
|
|
845 (let ((view (assoc "viewer" viewer))
|
|
|
846 (test (assoc "test" viewer)))
|
|
|
847 (if view (setcdr view (mm-unescape-mime-test (cdr view) info)))
|
|
|
848 (if test (setcdr test (mm-unescape-mime-test (cdr test) info))))
|
|
|
849 viewer)))))
|
|
|
850
|
|
|
851
|
|
|
852 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
853 ;;; Experimental MIME-types parsing
|
|
|
854 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
855 (defvar mm-mime-extensions
|
|
|
856 '(
|
|
|
857 ("" . "text/plain")
|
|
|
858 (".abs" . "audio/x-mpeg")
|
|
|
859 (".aif" . "audio/aiff")
|
|
|
860 (".aifc" . "audio/aiff")
|
|
|
861 (".aiff" . "audio/aiff")
|
|
|
862 (".ano" . "application/x-annotator")
|
|
|
863 (".au" . "audio/ulaw")
|
|
|
864 (".avi" . "video/x-msvideo")
|
|
|
865 (".bcpio" . "application/x-bcpio")
|
|
|
866 (".bin" . "application/octet-stream")
|
|
|
867 (".cdf" . "application/x-netcdr")
|
|
|
868 (".cpio" . "application/x-cpio")
|
|
|
869 (".csh" . "application/x-csh")
|
|
|
870 (".dvi" . "application/x-dvi")
|
|
|
871 (".el" . "application/emacs-lisp")
|
|
|
872 (".eps" . "application/postscript")
|
|
|
873 (".etx" . "text/x-setext")
|
|
|
874 (".exe" . "application/octet-stream")
|
|
|
875 (".fax" . "image/x-fax")
|
|
|
876 (".gif" . "image/gif")
|
|
|
877 (".hdf" . "application/x-hdf")
|
|
|
878 (".hqx" . "application/mac-binhex40")
|
|
|
879 (".htm" . "text/html")
|
|
|
880 (".html" . "text/html")
|
|
|
881 (".icon" . "image/x-icon")
|
|
|
882 (".ief" . "image/ief")
|
|
|
883 (".jpg" . "image/jpeg")
|
|
|
884 (".macp" . "image/x-macpaint")
|
|
|
885 (".man" . "application/x-troff-man")
|
|
|
886 (".me" . "application/x-troff-me")
|
|
|
887 (".mif" . "application/mif")
|
|
|
888 (".mov" . "video/quicktime")
|
|
|
889 (".movie" . "video/x-sgi-movie")
|
|
|
890 (".mp2" . "audio/x-mpeg")
|
|
|
891 (".mp2a" . "audio/x-mpeg2")
|
|
|
892 (".mpa" . "audio/x-mpeg")
|
|
|
893 (".mpa2" . "audio/x-mpeg2")
|
|
|
894 (".mpe" . "video/mpeg")
|
|
|
895 (".mpeg" . "video/mpeg")
|
|
|
896 (".mpega" . "audio/x-mpeg")
|
|
|
897 (".mpegv" . "video/mpeg")
|
|
|
898 (".mpg" . "video/mpeg")
|
|
|
899 (".mpv" . "video/mpeg")
|
|
|
900 (".ms" . "application/x-troff-ms")
|
|
|
901 (".nc" . "application/x-netcdf")
|
|
|
902 (".nc" . "application/x-netcdf")
|
|
|
903 (".oda" . "application/oda")
|
|
|
904 (".pbm" . "image/x-portable-bitmap")
|
|
|
905 (".pdf" . "application/pdf")
|
|
|
906 (".pgm" . "image/portable-graymap")
|
|
|
907 (".pict" . "image/pict")
|
|
|
908 (".pnm" . "image/x-portable-anymap")
|
|
|
909 (".ppm" . "image/portable-pixmap")
|
|
|
910 (".ps" . "application/postscript")
|
|
|
911 (".qt" . "video/quicktime")
|
|
|
912 (".ras" . "image/x-raster")
|
|
|
913 (".rgb" . "image/x-rgb")
|
|
|
914 (".rtf" . "application/rtf")
|
|
|
915 (".rtx" . "text/richtext")
|
|
|
916 (".sh" . "application/x-sh")
|
|
|
917 (".sit" . "application/x-stuffit")
|
|
|
918 (".snd" . "audio/basic")
|
|
|
919 (".src" . "application/x-wais-source")
|
|
|
920 (".tar" . "archive/tar")
|
|
|
921 (".tcl" . "application/x-tcl")
|
|
|
922 (".tcl" . "application/x-tcl")
|
|
|
923 (".tex" . "application/x-tex")
|
|
|
924 (".texi" . "application/texinfo")
|
|
|
925 (".tga" . "image/x-targa")
|
|
|
926 (".tif" . "image/tiff")
|
|
|
927 (".tiff" . "image/tiff")
|
|
|
928 (".tr" . "application/x-troff")
|
|
|
929 (".troff" . "application/x-troff")
|
|
|
930 (".tsv" . "text/tab-separated-values")
|
|
|
931 (".txt" . "text/plain")
|
|
|
932 (".vbs" . "video/mpeg")
|
|
|
933 (".vox" . "audio/basic")
|
|
|
934 (".vrml" . "x-world/x-vrml")
|
|
|
935 (".wav" . "audio/x-wav")
|
|
|
936 (".wrl" . "x-world/x-vrml")
|
|
|
937 (".xbm" . "image/xbm")
|
|
|
938 (".xpm" . "image/x-pixmap")
|
|
|
939 (".xwd" . "image/windowdump")
|
|
|
940 (".zip" . "application/zip")
|
|
|
941 (".ai" . "application/postscript")
|
|
|
942 (".jpe" . "image/jpeg")
|
|
|
943 (".jpeg" . "image/jpeg")
|
|
|
944 )
|
|
|
945 "*An assoc list of file extensions and the MIME content-types they
|
|
|
946 correspond to.")
|
|
|
947
|
|
|
948 (defun mm-parse-mimetypes (&optional path)
|
|
|
949 ;; Parse out all the mimetypes specified in a unix-style path string PATH
|
|
|
950 (cond
|
|
|
951 (path nil)
|
|
|
952 ((getenv "MIMETYPES") (setq path (getenv "MIMETYPES")))
|
|
|
953 ((memq system-type '(ms-dos ms-windows windows-nt))
|
|
|
954 (setq path (mapconcat 'expand-file-name
|
|
|
955 '("~/mime.typ" "~/etc/mime.typ") ";")))
|
|
|
956 (t (setq path (concat (expand-file-name "~/.mime-types") ":"
|
|
|
957 "/etc/mime-types:/usr/etc/mime-types:"
|
|
|
958 "/usr/local/etc/mime-types:"
|
|
|
959 "/usr/local/www/conf/mime-types"))))
|
|
|
960 (let ((fnames (mm-string-to-tokens path
|
|
|
961 (if (memq system-type
|
|
|
962 '(ms-dos ms-windows windows-nt))
|
|
|
963 ?;
|
|
|
964 ?:))) fname)
|
|
|
965 (while fnames
|
|
|
966 (setq fname (car fnames))
|
|
|
967 (if (and (file-exists-p fname) (file-readable-p fname))
|
|
|
968 (mm-parse-mimetype-file (car fnames)))
|
|
|
969 (setq fnames (cdr fnames)))))
|
|
|
970
|
|
|
971 (defun mm-parse-mimetype-file (fname)
|
|
|
972 ;; Parse out a mime-types file
|
|
|
973 (let (type ; The MIME type for this line
|
|
|
974 extns ; The extensions for this line
|
|
|
975 save-pos ; Misc. saved buffer positions
|
|
|
976 )
|
|
|
977 (save-excursion
|
|
|
978 (set-buffer (get-buffer-create " *mime-types*"))
|
|
|
979 (erase-buffer)
|
|
|
980 (insert-file-contents fname)
|
|
|
981 (mm-replace-regexp "#.*" "")
|
|
|
982 (mm-replace-regexp "\n+" "\n")
|
|
|
983 (mm-replace-regexp "[ \t]+$" "")
|
|
|
984 (goto-char (point-max))
|
|
|
985 (skip-chars-backward " \t\n")
|
|
|
986 (delete-region (point) (point-max))
|
|
|
987 (goto-char (point-min))
|
|
|
988 (while (not (eobp))
|
|
|
989 (skip-chars-forward " \t\n")
|
|
|
990 (setq save-pos (point))
|
|
|
991 (skip-chars-forward "^ \t")
|
|
|
992 (downcase-region save-pos (point))
|
|
|
993 (setq type (buffer-substring save-pos (point)))
|
|
|
994 (while (not (eolp))
|
|
|
995 (skip-chars-forward " \t")
|
|
|
996 (setq save-pos (point))
|
|
|
997 (skip-chars-forward "^ \t\n")
|
|
|
998 (setq extns (cons (buffer-substring save-pos (point)) extns)))
|
|
|
999 (while extns
|
|
|
1000 (setq mm-mime-extensions
|
|
|
1001 (cons
|
|
|
1002 (cons (if (= (string-to-char (car extns)) ?.)
|
|
|
1003 (car extns)
|
|
|
1004 (concat "." (car extns))) type) mm-mime-extensions)
|
|
|
1005 extns (cdr extns)))))))
|
|
|
1006
|
|
|
1007 (defun mm-extension-to-mime (extn)
|
|
|
1008 "Return the MIME content type of the file extensions EXTN"
|
|
|
1009 (if (and (stringp extn)
|
|
|
1010 (not (= (string-to-char extn) ?.)))
|
|
|
1011 (setq extn (concat "." extn)))
|
|
|
1012 (cdr (assoc (downcase extn) mm-mime-extensions)))
|
|
|
1013
|
|
|
1014
|
|
|
1015 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1016 ;;; Editing/Composition of body parts
|
|
|
1017 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1018 (defun mm-compose-type (type)
|
|
|
1019 ;; Compose a body section of MIME-type TYPE.
|
|
|
1020 (let* ((info (mm-mime-info type nil 5))
|
|
|
1021 (fnam (mm-generate-unique-filename))
|
|
|
1022 (comp (or (cdr (assoc "compose" info))))
|
|
|
1023 (ctyp (cdr (assoc "composetyped" info)))
|
|
|
1024 (buff (get-buffer-create " *mimecompose*"))
|
|
|
1025 (typeit (not ctyp))
|
|
|
1026 (retval "")
|
|
|
1027 (usef nil))
|
|
|
1028 (setq comp (mm-unescape-mime-test (or comp ctyp) info))
|
|
|
1029 (while (string-match "\\([^\\\\]\\)%s" comp)
|
|
|
1030 (setq comp (concat (substring comp 0 (match-end 1)) fnam
|
|
|
1031 (substring comp (match-end 0) nil))
|
|
|
1032 usef t))
|
|
|
1033 (call-process (or shell-file-name
|
|
|
1034 (getenv "ESHELL") (getenv "SHELL") "/bin/sh")
|
|
|
1035 nil (if usef nil buff) nil "-c" comp)
|
|
|
1036 (setq retval
|
|
|
1037 (concat
|
|
|
1038 (if typeit (concat "Content-type: " type "\r\n\r\n") "")
|
|
|
1039 (if usef
|
|
|
1040 (save-excursion
|
|
|
1041 (set-buffer buff)
|
|
|
1042 (erase-buffer)
|
|
|
1043 (insert-file-contents fnam)
|
|
|
1044 (buffer-string))
|
|
|
1045 (save-excursion
|
|
|
1046 (set-buffer buff)
|
|
|
1047 (buffer-string)))
|
|
|
1048 "\r\n"))
|
|
|
1049 retval))
|
|
|
1050
|
|
|
1051 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1052 ;;; Misc.
|
|
|
1053 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1054 (defun mm-type-to-file (type)
|
|
|
1055 "Return the file extension for content-type TYPE"
|
|
|
1056 (rassoc type mm-mime-extensions))
|
|
|
1057
|
|
|
1058
|
|
|
1059 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1060 ;;; Miscellaneous MIME viewers written in elisp
|
|
|
1061 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1062 (defun mm-play-sound-file (&optional buff)
|
|
|
1063 "Play a sound file in buffer BUFF (defaults to current buffer)"
|
|
|
1064 (setq buff (or buff (current-buffer)))
|
|
|
1065 (let ((fname (mm-generate-unique-filename "%s.au"))
|
|
|
1066 (synchronous-sounds t)) ; Play synchronously
|
|
|
1067 (if (featurep 'mule)
|
|
|
1068 (write-region (point-min) (point-max) fname nil nil *noconv*)
|
|
|
1069 (write-region (point-min) (point-max) fname))
|
|
|
1070 (kill-buffer (current-buffer))
|
|
|
1071 (play-sound-file fname)
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1072 (condition-case ()
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1073 (delete-file fname)
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1074 (error nil))))
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1075
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|
|
1076 (defun mm-parse-mime-headers (&optional no-delete)
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|
|
1077 "Return a list of the MIME headers at the top of this buffer. If
|
|
|
1078 optional argument NO-DELETE is non-nil, don't delete the headers."
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|
|
1079 (let* ((st (point-min))
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|
1080 (nd (progn
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1081 (goto-char (point-min))
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|
1082 (skip-chars-forward " \t\n")
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1083 (if (re-search-forward "^\r*$" nil t)
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|
1084 (1+ (point))
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|
1085 (point-max))))
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|
1086 save-pos
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|
|
1087 status
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|
1088 hname
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|
|
1089 hvalu
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|
|
1090 result
|
|
|
1091 )
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|
|
1092 (narrow-to-region st nd)
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|
1093 (goto-char (point-min))
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|
|
1094 (while (not (eobp))
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|
|
1095 (skip-chars-forward " \t\n\r")
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|
|
1096 (setq save-pos (point))
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|
|
1097 (skip-chars-forward "^:\n\r")
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|
|
1098 (downcase-region save-pos (point))
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|
|
1099 (setq hname (buffer-substring save-pos (point)))
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|
|
1100 (skip-chars-forward ": \t ")
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|
|
1101 (setq save-pos (point))
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|
|
1102 (skip-chars-forward "^\n\r")
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|
|
1103 (setq hvalu (buffer-substring save-pos (point))
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|
|
1104 result (cons (cons hname hvalu) result)))
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|
|
1105 (or no-delete (delete-region st nd))
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|
|
1106 result))
|
|
|
1107
|
|
|
1108 (defun mm-find-available-multiparts (separator &optional buf)
|
|
|
1109 "Return a list of mime-headers for the various body parts of a
|
|
|
1110 multipart message in buffer BUF with separator SEPARATOR.
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|
|
1111 The different multipart specs are put in `mm-temporary-directory'."
|
|
|
1112 (let ((sep (concat "^--" separator "\r*$"))
|
|
|
1113 headers
|
|
|
1114 fname
|
|
|
1115 results)
|
|
|
1116 (save-excursion
|
|
|
1117 (and buf (set-buffer buf))
|
|
|
1118 (goto-char (point-min))
|
|
|
1119 (while (re-search-forward sep nil t)
|
|
|
1120 (let ((st (set-marker (make-marker)
|
|
|
1121 (progn
|
|
|
1122 (forward-line 1)
|
|
|
1123 (beginning-of-line)
|
|
|
1124 (point))))
|
|
|
1125 (nd (set-marker (make-marker)
|
|
|
1126 (if (re-search-forward sep nil t)
|
|
|
1127 (1- (match-beginning 0))
|
|
|
1128 (point-max)))))
|
|
|
1129 (narrow-to-region st nd)
|
|
|
1130 (goto-char st)
|
|
|
1131 (if (looking-at "^\r*$")
|
|
|
1132 (insert "Content-type: text/plain\n"
|
|
|
1133 "Content-length: " (int-to-string (- nd st)) "\n"))
|
|
|
1134 (setq headers (mm-parse-mime-headers)
|
|
|
1135 fname (mm-generate-unique-filename))
|
|
|
1136 (let ((x (or (cdr (assoc "content-type" headers)) "text/plain")))
|
|
|
1137 (if (string-match "name=\"*\\([^ \"]+\\)\"*" x)
|
|
|
1138 (setq fname (expand-file-name
|
|
|
1139 (substring x (match-beginning 1)
|
|
|
1140 (match-end 1))
|
|
|
1141 mm-temporary-directory))))
|
|
|
1142 (widen)
|
|
|
1143 (if (assoc "content-transfer-encoding" headers)
|
|
|
1144 (let ((coding (cdr
|
|
|
1145 (assoc "content-transfer-encoding" headers)))
|
|
|
1146 (cmd nil))
|
|
|
1147 (setq coding (and coding (downcase coding))
|
|
|
1148 cmd (or (cdr (assoc coding
|
|
|
1149 mm-content-transfer-encodings))
|
|
|
1150 (read-string
|
|
|
1151 (concat "How shall I decode " coding "? ")
|
|
|
1152 "cat")))
|
|
|
1153 (if (string= cmd "") (setq cmd "cat"))
|
|
|
1154 (if (stringp cmd)
|
|
|
1155 (shell-command-on-region st nd cmd t)
|
|
|
1156 (funcall cmd st nd))
|
|
|
1157 (set-marker nd (point))))
|
|
|
1158 (write-region st nd fname nil 5)
|
|
|
1159 (delete-region st nd)
|
|
|
1160 (setq results (cons
|
|
|
1161 (cons
|
|
|
1162 (cons "mm-filename" fname) headers) results)))))
|
|
|
1163 results))
|
|
|
1164
|
|
|
1165 (defun mm-format-multipart-as-html (&optional buf type)
|
|
|
1166 (if buf (set-buffer buf))
|
|
|
1167 (let* ((boundary (if (string-match
|
|
|
1168 "boundary[ \t]*=[ \t\"]*\\([^ \"\t\n]+\\)"
|
|
|
1169 type)
|
|
|
1170 (regexp-quote
|
|
|
1171 (substring type (match-beginning 1) (match-end 1)))))
|
|
|
1172 (parts (mm-find-available-multiparts boundary)))
|
|
|
1173 (erase-buffer)
|
|
|
1174 (insert "<html>\n"
|
|
|
1175 " <head>\n"
|
|
|
1176 " <title>Multipart Message</title>\n"
|
|
|
1177 " </head>\n"
|
|
|
1178 " <body>\n"
|
|
|
1179 " <h1> Multipart message encountered </h1>\n"
|
|
|
1180 " <p> I have encountered a multipart MIME message.\n"
|
|
|
1181 " The following parts have been detected. Please\n"
|
|
|
1182 " select which one you want to view.\n"
|
|
|
1183 " </p>\n"
|
|
|
1184 " <ul>\n"
|
|
|
1185 (mapconcat
|
|
|
1186 (function (lambda (x)
|
|
|
1187 (concat " <li> <a href=\"file:"
|
|
|
1188 (cdr (assoc "mm-filename" x))
|
|
|
1189 "\">"
|
|
|
1190 (or (cdr (assoc "content-description" x)) "")
|
|
|
1191 "--"
|
|
|
1192 (or (cdr (assoc "content-type" x))
|
|
|
1193 "unknown type")
|
|
|
1194 "</a> </li>")))
|
|
|
1195 parts "\n")
|
|
|
1196 " </ul>\n"
|
|
|
1197 " </body>\n"
|
|
|
1198 "</html>\n"
|
|
|
1199 "<!-- Automatically generated by MM v" mm-version "-->\n")))
|
|
|
1200
|
|
|
1201 (defun mm-multipart-viewer ()
|
|
|
1202 (mm-format-multipart-as-html
|
|
|
1203 (current-buffer)
|
|
|
1204 (cdr (assoc "content-type" url-current-mime-headers)))
|
|
|
1205 (let ((w3-working-buffer (current-buffer)))
|
|
|
1206 (w3-prepare-buffer)))
|
|
|
1207
|
|
|
1208 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1209 ;;; Transfer encodings we can decrypt automatically
|
|
|
1210 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
1211 (defun mm-decode-quoted-printable (&optional st nd)
|
|
|
1212 (interactive)
|
|
|
1213 (setq st (or st (point-min))
|
|
|
1214 nd (or nd (point-max)))
|
|
|
1215 (save-restriction
|
|
|
1216 (narrow-to-region st nd)
|
|
|
1217 (save-excursion
|
|
|
1218 (let ((buffer-read-only nil))
|
|
|
1219 (goto-char (point-min))
|
|
|
1220 (while (re-search-forward "=[0-9A-F][0-9A-F]" nil t)
|
|
|
1221 (replace-match
|
|
|
1222 (char-to-string
|
|
|
1223 (+
|
|
|
1224 (* 16 (mm-hex-char-to-integer
|
|
|
1225 (char-after (1+ (match-beginning 0)))))
|
|
|
1226 (mm-hex-char-to-integer
|
|
|
1227 (char-after (1- (match-end 0))))))))))))
|
|
|
1228
|
|
|
1229 ;; Taken from hexl.el.
|
|
|
1230 (defun mm-hex-char-to-integer (character)
|
|
|
1231 "Take a char and return its value as if it was a hex digit."
|
|
|
1232 (if (and (>= character ?0) (<= character ?9))
|
|
|
1233 (- character ?0)
|
|
|
1234 (let ((ch (logior character 32)))
|
|
|
1235 (if (and (>= ch ?a) (<= ch ?f))
|
|
|
1236 (- ch (- ?a 10))
|
|
|
1237 (error (format "Invalid hex digit `%c'." ch))))))
|
|
|
1238
|
|
|
1239
|
|
|
1240 (require 'base64)
|
|
|
1241 (provide 'mm)
|
