root/trunk/lisp/url/url-mailto.el

;;; url-mail.el --- Mail Uniform Resource Locator retrieval code

;; Copyright (C) 1996, 1997, 1998, 1999, 2004,
;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.

;; Keywords: comm, data, processes

;; 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, 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; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.

;;; Commentary:

;;; Code:

(require 'url-vars)
(require 'url-parse)
(require 'url-util)

;;;###autoload
(defun url-mail (&rest args)
  (interactive "P")
  (if (fboundp 'message-mail)
      (apply 'message-mail args)
    (or (apply 'mail args)
        (error "Mail aborted"))))

(defun url-mail-goto-field (field)
  (if (not field)
      (goto-char (point-max))
    (let ((dest nil)
          (lim nil)
          (case-fold-search t))
      (save-excursion
        (goto-char (point-min))
        (if (re-search-forward (regexp-quote mail-header-separator) nil t)
            (setq lim (match-beginning 0)))
        (goto-char (point-min))
        (if (re-search-forward (concat "^" (regexp-quote field) ":") lim t)
            (setq dest (match-beginning 0))))
      (if dest
          (progn
            (goto-char dest)
            (end-of-line))
        (goto-char lim)
        (insert (capitalize field) ": ")
        (save-excursion
          (insert "\n"))))))

;;;###autoload
(defun url-mailto (url)
  "Handle the mailto: URL syntax."
  (if (url-user url)
      ;; malformed mailto URL (mailto://wmperry@gnu.org) instead of
      ;; mailto:wmperry@gnu.org
      (url-set-filename url (concat (url-user url) "@" (url-filename url))))
  (setq url (url-filename url))
  (let (to args source-url subject func headers-start)
    (if (string-match (regexp-quote "?") url)
        (setq headers-start (match-end 0)
              to (url-unhex-string (substring url 0 (match-beginning 0)))
              args (url-parse-query-string
                    (substring url headers-start nil) t t))
      (setq to (url-unhex-string url)))
    (setq source-url (url-view-url t))
    (if (and url-request-data (not (assoc "subject" args)))
        (setq args (cons (list "subject"
                               (concat "Automatic submission from "
                                       url-package-name "/"
                                       url-package-version)) args)))
    (if (and source-url (not (assoc "x-url-from" args)))
        (setq args (cons (list "x-url-from" source-url) args)))

    (let ((tolist (assoc "to" args)))
      (if tolist
          (if (not (string= to ""))
              (setcdr tolist
                      (list (concat to ", " (cadr tolist)))))
        (setq args (cons (list "to" to) args))))

    (setq subject (cdr-safe (assoc "subject" args)))
    (if (eq url-mail-command 'compose-mail)
        (compose-mail nil nil nil 'new)
      (if (eq url-mail-command 'mail)
          (mail 'new)
        (funcall url-mail-command)))
    (while args
      (if (string= (caar args) "body")
          (progn
            (goto-char (point-min))
            (or (search-forward (concat "\n" mail-header-separator "\n") nil t)
                (goto-char (point-max)))
            (insert (mapconcat 
                     #'(lambda (string)
                         (replace-regexp-in-string "\r\n" "\n" string))
                     (cdar args) "\n")))
        (url-mail-goto-field (caar args))
        (setq func (intern-soft (concat "mail-" (caar args))))
        (insert (mapconcat 'identity (cdar args) ", ")))
      (setq args (cdr args)))
    ;; (url-mail-goto-field "User-Agent")
;;     (insert url-package-name "/" url-package-version " URL/" url-version)
    (if (not url-request-data)
        (progn
          (set-buffer-modified-p nil)
          (if subject
              (url-mail-goto-field nil)
            (url-mail-goto-field "subject")))
      (if url-request-extra-headers
          (mapconcat
           (lambda (x)
             (url-mail-goto-field (car x))
             (insert (cdr x)))
           url-request-extra-headers ""))
      (goto-char (point-max))
      (insert url-request-data)
      ;; It seems Microsoft-ish to send without warning.
      ;; Fixme: presumably this should depend on a privacy setting.
      (if (y-or-n-p "Send this auto-generated mail? ")
          (let ((buffer (current-buffer)))
            (cond ((eq url-mail-command 'compose-mail)
                   (funcall (get mail-user-agent 'sendfunc) nil))
                  ;; otherwise, we can't be sure
                  ((fboundp 'message-send-and-exit)
                   (message-send-and-exit))
                  (t (mail-send-and-exit nil)))
            (kill-buffer buffer))))
    nil))

(provide 'url-mailto)

;; arch-tag: 7b7ad52e-8760-497b-9444-75fae14e34c5
;;; url-mailto.el ends here