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1 | ;;; mailclient.el --- mail sending via system's mail client. -*- byte-compile-dynamic: t -*- |
2 | ||
d7a0267c | 3 | ;; Copyright (C) 2005, 2006, 2007 Free Software Foundation |
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4 | |
5 | ;; Author: David Reitter <david.reitter@gmail.com> | |
6 | ;; Keywords: mail | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
23 | ;; Boston, MA 02110-1301, USA. | |
24 | ||
25 | ;;; Commentary: | |
26 | ||
3db4118f JB |
27 | ;; This package allows to hand over a buffer to be sent off |
28 | ;; via the system's designated e-mail client. | |
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29 | ;; Note that the e-mail client will display the contents of the buffer |
30 | ;; again for editing. | |
31 | ;; The e-mail client is taken to be whoever handles a mailto: URL | |
3db4118f | 32 | ;; via `browse-url'. |
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33 | ;; Mailto: URLs are composed according to RFC2368. |
34 | ||
35 | ;; MIME bodies are not supported - we rather expect the mail client | |
36 | ;; to encode the body and add, for example, a digital signature. | |
37 | ;; The mailto URL RFC calls for "short text messages that are | |
3db4118f | 38 | ;; actually the content of automatic processing." |
60a97d23 | 39 | ;; So mailclient.el is ideal for situations where an e-mail is |
3db4118f JB |
40 | ;; generated automatically, and the user can edit it in the |
41 | ;; mail client (e.g. bug-reports). | |
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42 | |
43 | ;; To activate: | |
44 | ;; (setq send-mail-function 'mailclient-send-it) ; if you use `mail' | |
45 | ||
46 | ;;; Code: | |
47 | ||
48 | ||
49 | (require 'sendmail) ;; for mail-sendmail-undelimit-header | |
50 | (require 'mail-utils) ;; for mail-fetch-field | |
51 | ||
3db4118f | 52 | (defcustom mailclient-place-body-on-clipboard-flag |
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53 | (fboundp 'w32-set-clipboard-data) |
54 | "If non-nil, put the e-mail body on the clipboard in mailclient. | |
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55 | This is useful on systems where only short mailto:// URLs are |
56 | supported. Defaults to non-nil on Windows, nil otherwise." | |
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57 | :type 'boolean |
58 | :group 'mail) | |
59 | ||
60 | (defun mailclient-encode-string-as-url (string) | |
61 | "Convert STRING to a URL, using utf-8 as encoding." | |
62 | (apply (function concat) | |
63 | (mapcar | |
64 | (lambda (char) | |
65 | (cond | |
66 | ((eq char ?\x20) "%20") ;; space | |
3db4118f | 67 | ((eq char ?\n) "%0D%0A") ;; newline |
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68 | ((string-match "[-a-zA-Z0-9_:/.@]" (char-to-string char)) |
69 | (char-to-string char)) ;; printable | |
70 | (t ;; everything else | |
71 | (format "%%%02x" char)))) ;; escape | |
72 | ;; Convert string to list of chars | |
73 | (append (encode-coding-string string 'utf-8))))) | |
74 | ||
75 | (defvar mailclient-delim-static "?") | |
76 | (defun mailclient-url-delim () | |
77 | (let ((current mailclient-delim-static)) | |
3db4118f | 78 | (setq mailclient-delim-static "&") |
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79 | current)) |
80 | ||
81 | (defun mailclient-gather-addresses (str &optional drop-first-name) | |
82 | (let ((field (mail-fetch-field str nil t))) | |
83 | (if field | |
84 | (save-excursion | |
3db4118f | 85 | (let ((first t) |
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86 | (result "")) |
87 | (mapc | |
88 | (lambda (recp) | |
3db4118f JB |
89 | (setq result |
90 | (concat | |
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91 | result |
92 | (if (and drop-first-name | |
93 | first) | |
94 | "" | |
95 | (concat (mailclient-url-delim) str "=")) | |
3db4118f | 96 | (mailclient-encode-string-as-url |
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97 | recp))) |
98 | (setq first nil)) | |
3db4118f | 99 | (split-string |
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100 | (mail-strip-quoted-names field) "\, *")) |
101 | result))))) | |
102 | ||
103 | ;;;###autoload | |
3db4118f | 104 | (defun mailclient-send-it () |
60a97d23 RS |
105 | "Pass current buffer on to the system's mail client. |
106 | Suitable value for `send-mail-function'. | |
107 | The mail client is taken to be the handler of mailto URLs." | |
108 | (require 'mail-utils) | |
109 | (let ((case-fold-search nil) | |
110 | delimline | |
111 | (mailbuf (current-buffer))) | |
112 | (unwind-protect | |
113 | (with-temp-buffer | |
114 | (insert-buffer-substring mailbuf) | |
115 | ;; Move to header delimiter | |
116 | (mail-sendmail-undelimit-header) | |
117 | (setq delimline (point-marker)) | |
118 | (if mail-aliases | |
119 | (expand-mail-aliases (point-min) delimline)) | |
120 | (goto-char (point-min)) | |
121 | ;; ignore any blank lines in the header | |
122 | (while (and (re-search-forward "\n\n\n*" delimline t) | |
123 | (< (point) delimline)) | |
124 | (replace-match "\n")) | |
3db4118f | 125 | (let ((case-fold-search t)) |
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126 | ;; initialize limiter |
127 | (setq mailclient-delim-static "?") | |
128 | ;; construct and call up mailto URL | |
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129 | (browse-url |
130 | (concat | |
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131 | (save-excursion |
132 | (narrow-to-region (point-min) delimline) | |
3db4118f | 133 | (concat |
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134 | "mailto:" |
135 | ;; some of the headers according to RFC822 | |
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136 | (mailclient-gather-addresses "To" |
137 | 'drop-first-name) | |
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138 | (mailclient-gather-addresses "cc" ) |
139 | (mailclient-gather-addresses "bcc" ) | |
140 | (mailclient-gather-addresses "Resent-To" ) | |
141 | (mailclient-gather-addresses "Resent-cc" ) | |
142 | (mailclient-gather-addresses "Resent-bcc" ) | |
143 | (mailclient-gather-addresses "Reply-To" ) | |
144 | ;; The From field is not honored for now: it's | |
145 | ;; not necessarily configured. The mail client | |
146 | ;; knows the user's address(es) | |
147 | ;; (mailclient-gather-addresses "From" ) | |
148 | ;; subject line | |
149 | (let ((subj (mail-fetch-field "Subject" nil t))) | |
150 | (widen) ;; so we can read the body later on | |
151 | (if subj ;; if non-blank | |
152 | ;; the mail client will deal with | |
153 | ;; warning the user etc. | |
3db4118f | 154 | (concat (mailclient-url-delim) "subject=" |
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155 | (mailclient-encode-string-as-url subj)) |
156 | "")))) | |
157 | ;; body | |
3db4118f JB |
158 | (concat |
159 | (mailclient-url-delim) "body=" | |
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160 | (mailclient-encode-string-as-url |
161 | (if mailclient-place-body-on-clipboard-flag | |
162 | (progn | |
3db4118f | 163 | (clipboard-kill-ring-save |
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164 | (+ 1 delimline) (point-max)) |
165 | (concat | |
166 | "*** E-Mail body has been placed on clipboard, " | |
167 | "please paste them here! ***")) | |
168 | ;; else | |
169 | (buffer-substring (+ 1 delimline) (point-max)))))))))))) | |
170 | ||
171 | (provide 'mailclient) | |
172 | ||
aa548632 | 173 | ;; arch-tag: 35d10fc8-a1bc-4f29-a4e6-c288e53578ef |
60a97d23 | 174 | ;;; mailclient.el ends here |