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1 ;;; tl-822.el --- RFC 822 parser for GNU Emacs
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2
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3 ;; Copyright (C) 1995,1996 Free Software Foundation, Inc.
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4
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5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
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6 ;; Keywords: mail, news, RFC 822
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7
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8 ;; This file is part of tl (Tiny Library).
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9
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10 ;; This program is free software; you can redistribute it and/or
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11 ;; modify it under the terms of the GNU General Public License as
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12 ;; published by the Free Software Foundation; either version 2, or (at
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13 ;; your option) any later version.
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14
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15 ;; This program is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with This program; see the file COPYING. If not, write to
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22 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 ;; Boston, MA 02111-1307, USA.
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24
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25 ;;; Code:
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26
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27 (require 'tl-seq)
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28 (require 'tl-str)
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29 (require 'std11)
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30
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31
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32 (defconst rfc822/RCS-ID
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33 "$Id: tl-822.el,v 1.1.1.1 1996/12/18 03:55:31 steve Exp $")
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34 (defconst rfc822/version (get-version-string rfc822/RCS-ID))
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35
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36
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37 ;;; @ header
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38 ;;;
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39
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40 (defalias 'rfc822/narrow-to-header 'std11-narrow-to-header)
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41 (defalias 'rfc822/get-header-string 'std11-header-string)
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42 (defalias 'rfc822/get-header-string-except 'std11-header-string-except)
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43 (defalias 'rfc822/get-field-names 'std11-collect-field-names)
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44
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45
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46 ;;; @ field
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47 ;;;
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48
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49 (defalias `rfc822/field-end 'std11-field-end)
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50 (defalias 'rfc822/get-field-body 'std11-field-body)
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51 (defalias 'rfc822/get-field-bodies 'std11-field-bodies)
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52
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53
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54 ;;; @ quoting
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55 ;;;
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56
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57 (defconst rfc822/linear-white-space-regexp "\\(\n?[ \t]\\)+")
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58 (defconst rfc822/quoted-pair-regexp "\\\\.")
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59 (defconst rfc822/non-qtext-char-list '(?\" ?\\ ?\r ?\n))
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60 (defconst rfc822/qtext-regexp
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61 (concat "[^" (char-list-to-string rfc822/non-qtext-char-list) "]"))
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62 (defconst rfc822/quoted-string-regexp
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63 (concat "\""
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64 (regexp-*
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65 (regexp-or rfc822/qtext-regexp rfc822/quoted-pair-regexp)
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66 )
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67 "\""))
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68
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69 (defun rfc822/wrap-as-quoted-string (str)
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70 "Wrap string STR as RFC 822 quoted-string. [tl-822.el]"
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71 (concat "\""
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72 (mapconcat (function
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73 (lambda (chr)
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74 (if (memq chr rfc822/non-qtext-char-list)
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75 (concat "\\" (char-to-string chr))
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76 (char-to-string chr)
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77 )
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78 )) str "")
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79 "\""))
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80
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81 (defun rfc822/strip-quoted-pair (str)
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82 (let ((dest "")
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83 (i 0)
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84 (len (length str))
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85 chr flag)
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86 (while (< i len)
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87 (setq chr (elt str i))
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88 (if (or flag (not (eq chr ?\\)))
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89 (progn
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90 (setq dest (concat dest (char-to-string chr)))
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91 (setq flag nil)
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92 )
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93 (setq flag t)
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94 )
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95 (setq i (+ i 1))
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96 )
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97 dest))
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98
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99 (defun rfc822/strip-quoted-string (str)
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100 (rfc822/strip-quoted-pair
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101 (let ((max (- (length str) 1))
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102 )
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103 (if (and (eq (elt str 0) ?\")
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104 (eq (elt str max) ?\")
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105 )
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106 (substring str 1 max)
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107 str)
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108 )))
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109
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110
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111 ;;; @ unfolding
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112 ;;;
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113
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114 (defalias 'rfc822/unfolding-string 'std11-unfold-string)
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115
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116
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117 ;;; @ lexical analyze
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118 ;;;
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119
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120 (defalias 'rfc822/lexical-analyze 'std11-lexical-analyze)
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121
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122
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123 ;;; @ parser
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124 ;;;
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125
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126 (defalias 'rfc822/parse-address 'std11-parse-address)
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127 (defalias 'rfc822/parse-addresses 'std11-parse-addresses)
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128 (defalias 'rfc822/address-string 'std11-address-string)
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129 (defalias 'rfc822/full-name-string 'std11-full-name-string)
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130
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131 (defun rfc822/extract-address-components (string)
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132 "Extract full name and canonical address from STRING.
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133 Returns a list of the form (FULL-NAME CANONICAL-ADDRESS).
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134 If no name can be extracted, FULL-NAME will be nil. [tl-822.el]"
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135 (let* ((structure (car (std11-parse-address-string string)))
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136 (phrase (rfc822/full-name-string structure))
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137 (address (rfc822/address-string structure))
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138 )
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139 (list phrase address)
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140 ))
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141
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142
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143 ;;; @ end
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144 ;;;
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145
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146 (provide 'tl-822)
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147
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148 ;;; tl-822.el ends here
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