1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
;;; rfc2368.el --- support for rfc2368
;; Copyright (C) 1998, 2000, 2001, 2002, 2003, 2004,
;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
;; Author: Sen Nagata <sen@eccosys.com>
;; Keywords: mail
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; notes:
;;
;; -repeat after me: "the colon is not part of the header name..."
;; -if w3 becomes part of emacs, then it may make sense to have this
;; file depend on w3 -- the maintainer of w3 says merging w/ Emacs
;; is planned!
;;
;; historical note:
;;
;; this is intended as a replacement for mailto.el
;;
;; acknowledgements:
;;
;; the functions that deal w/ unhexifying in this file were basically
;; taken from w3 -- i hope to replace them w/ something else soon OR
;; perhaps if w3 becomes a part of emacs soon, use the functions from w3.
;;; History:
;;
;; 0.3:
;;
;; added the constant rfc2368-version
;; implemented first potential fix for a bug in rfc2368-mailto-regexp
;; implemented first potential fix for a bug in rfc2368-parse-mailto
;; (both bugs reported by Kenichi OKADA)
;;
;; 0.2:
;;
;; started to use checkdoc
;;
;; 0.1:
;;
;; initial implementation
;;; Code:
;; only an approximation?
;; see rfc 1738
(defconst rfc2368-mailto-regexp
"^\\(mailto:\\)\\([^?]+\\)*\\(\\?\\(.*\\)\\)*"
"Regular expression to match and aid in parsing a mailto url.")
;; describes 'mailto:'
(defconst rfc2368-mailto-scheme-index 1
"Describes the 'mailto:' portion of the url.")
;; i'm going to call this part the 'prequery'
(defconst rfc2368-mailto-prequery-index 2
"Describes the portion of the url between 'mailto:' and '?'.")
;; i'm going to call this part the 'query'
(defconst rfc2368-mailto-query-index 4
"Describes the portion of the url after '?'.")
(defun rfc2368-unhexify-string (string)
"Unhexify STRING -- e.g. 'hello%20there' -> 'hello there'."
(replace-regexp-in-string "%[[:xdigit:]]\\{2\\}"
(lambda (match)
(string (string-to-number (substring match 1)
16)))
string t t))
(defun rfc2368-parse-mailto-url (mailto-url)
"Parse MAILTO-URL, and return an alist of header-name, header-value pairs.
MAILTO-URL should be a RFC 2368 (mailto) compliant url. A cons cell w/ a
key of 'Body' is a special case and is considered a header for this purpose.
The returned alist is intended for use w/ the `compose-mail' interface.
Note: make sure MAILTO-URL has been 'unhtmlized' (e.g. & -> &), before
calling this function."
(let ((case-fold-search t)
prequery query headers-alist)
(if (string-match rfc2368-mailto-regexp mailto-url)
(progn
(setq prequery
(match-string rfc2368-mailto-prequery-index mailto-url))
(setq query
(match-string rfc2368-mailto-query-index mailto-url))
;; build alist of header name-value pairs
(if (not (null query))
(setq headers-alist
(mapcar
(lambda (x)
(let* ((temp-list (split-string x "="))
(header-name (car temp-list))
(header-value (cadr temp-list)))
;; return ("Header-Name" . "header-value")
(cons
(capitalize (rfc2368-unhexify-string header-name))
(rfc2368-unhexify-string header-value))))
(split-string query "&"))))
;; deal w/ multiple 'To' recipients
(if prequery
(progn
(setq prequery (rfc2368-unhexify-string prequery))
(if (assoc "To" headers-alist)
(let* ((our-cons-cell
(assoc "To" headers-alist))
(our-cdr
(cdr our-cons-cell)))
(setcdr our-cons-cell (concat prequery ", " our-cdr)))
(setq headers-alist
(cons (cons "To" prequery) headers-alist)))))
headers-alist)
(error "Failed to match a mailto: url"))
))
(provide 'rfc2368)
;; arch-tag: ea804934-ad96-4f69-957b-857a76e4fd95
;;; rfc2368.el ends here
|
