home *** CD-ROM | disk | FTP | other *** search
- ;;; goto-addr.el --- click to browse URL or to send to e-mail address
-
- ;; Copyright (C) 1995 Free Software Foundation, Inc.
-
- ;; Author: Eric Ding <ericding@mit.edu>
- ;; Maintainer: Eric Ding <ericding@mit.edu>
- ;; Created: 15 Aug 1995
- ;; Keywords: mh-e, www, mouse, 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 2, 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., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;; This package allows you to click or hit a key sequence while on a
- ;; URL or e-mail address, and either load the URL into a browser of
- ;; your choice using the browse-url package, or if it's an e-mail
- ;; address, to send an e-mail to that address. By default, we bind to
- ;; the [mouse-2] and the [C-c return] key sequences.
-
- ;; INSTALLATION
- ;;
- ;; To use goto-address in a particular mode (for example, while
- ;; reading mail in mh-e), add something like this in your .emacs file:
- ;;
- ;; (add-hook 'mh-show-mode-hook 'goto-address)
- ;;
- ;; By default, goto-address now sends using `mail' instead of `mh-send'.
- ;; To use mh-e to send mail, add the following to your .emacs file:
- ;;
- ;; (setq goto-address-mail-method 'goto-address-send-using-mh-e)
- ;;
- ;; The mouse click method is bound to [mouse-2] on highlighted URL's or
- ;; e-mail addresses only; it functions normally everywhere else. To bind
- ;; another mouse click to the function, add the following to your .emacs
- ;; (for example):
- ;;
- ;; (setq goto-address-highlight-keymap
- ;; (let ((m (make-sparse-keymap)))
- ;; (define-key m [S-mouse-2] 'goto-address-at-mouse)
- ;; m))
- ;;
-
- ;; BUG REPORTS
- ;;
- ;; Please send bug reports to me at ericding@mit.edu.
-
- ;; Known bugs/features:
- ;; * goto-address-mail-regexp only catches foo@bar.org style addressing,
- ;; not stuff like X.400 addresses, etc.
- ;; * regexp also catches Message-Id line, since it is in the format of
- ;; an Internet e-mail address (like Compuserve addresses)
- ;; * If show buffer is fontified after goto-address-fontify is run
- ;; (say, using font-lock-fontify-buffer), then font-lock face will
- ;; override goto-address faces.
-
- ;;; Code:
-
- (require 'browse-url)
-
- ;;; I don't expect users to want fontify'ing without highlighting.
- (defvar goto-address-fontify-p t
- "*If t, URL's and e-mail addresses in buffer are fontified.
- But only if `goto-address-highlight-p' is also non-nil.")
-
- (defvar goto-address-highlight-p t
- "*If t, URL's and e-mail addresses in buffer are highlighted.")
-
- (defvar goto-address-fontify-maximum-size 30000
- "*Maximum size of file in which to fontify and/or highlight URL's.")
-
- (defvar goto-address-mail-regexp
- "[-a-zA-Z0-9._]+@\\([-a-zA-z0-9_]+\\.\\)+[a-zA-Z0-9]+"
- "A regular expression probably matching an e-mail address.")
-
- (defvar goto-address-url-regexp
- (concat "\\b\\(s?https?\\|ftp\\|file\\|gopher\\|news\\|"
- "telnet\\|wais\\):\\(//[-a-zA-Z0-9_.]+:"
- "[0-9]*\\)?[-a-zA-Z0-9_=?#$@~`%&*+|\\/.,]*"
- "[-a-zA-Z0-9_=#$@~`%&*+|\\/]")
- "A regular expression probably matching a URL.")
-
- (defvar goto-address-mail-method
- 'goto-address-send-using-mail
- "*Function to compose mail.
- Two pre-made functions are `goto-address-send-using-mail' (sendmail);
- and `goto-address-send-using-mh-e' (MH-E).")
-
- (defvar goto-address-highlight-keymap
- (let ((m (make-sparse-keymap)))
- (define-key m [mouse-2] 'goto-address-at-mouse)
- m)
- "keymap to hold goto-addr's mouse key defs under highlighted URLs.")
-
- (defvar goto-address-url-face 'bold
- "*Face to use for URLs.")
-
- (defvar goto-address-url-mouse-face 'highlight
- "*Face to use for URLs when the mouse is on them.")
-
- (defvar goto-address-mail-face 'italic
- "*Face to use for e-mail addresses.")
-
- (defvar goto-address-mail-mouse-face 'secondary-selection
- "*Face to use for e-mail addresses when the mouse is on them.")
-
- (defun goto-address-fontify ()
- "Fontify the URL's and e-mail addresses in the current buffer.
- This function implements `goto-address-highlight-p'
- and `goto-address-fontify-p'."
- (save-excursion
- (let ((inhibit-read-only t)
- (inhibit-point-motion-hooks t)
- (modified (buffer-modified-p)))
- (goto-char (point-min))
- (if (< (- (point-max) (point)) goto-address-fontify-maximum-size)
- (progn
- (while (re-search-forward goto-address-url-regexp nil t)
- (let ((s (match-beginning 0))
- (e (match-end 0)))
- (and goto-address-fontify-p
- (put-text-property s e 'face goto-address-url-face))
- (put-text-property s e 'mouse-face goto-address-url-mouse-face)
- (put-text-property
- s e 'local-map goto-address-highlight-keymap)))
- (goto-char (point-min))
- (while (re-search-forward goto-address-mail-regexp nil t)
- (let ((s (match-beginning 0))
- (e (match-end 0)))
- (and goto-address-fontify-p
- (put-text-property s e 'face goto-address-mail-face))
- (put-text-property s e 'mouse-face goto-address-mail-mouse-face)
- (put-text-property
- s e 'local-map goto-address-highlight-keymap)))))
- (and (buffer-modified-p)
- (not modified)
- (set-buffer-modified-p nil)))))
-
- ;;; code to find and goto addresses; much of this has been blatantly
- ;;; snarfed from browse-url.el
-
- ;;;###autoload
- (defun goto-address-at-mouse (event)
- "Send to the e-mail address or load the URL clicked with the mouse.
- Send mail to address at position of mouse click. See documentation for
- `goto-address-find-address-at-point'. If no address is found
- there, then load the URL at or before the position of the mouse click."
- (interactive "e")
- (save-excursion
- (let ((posn (event-start event)))
- (set-buffer (window-buffer (posn-window posn)))
- (goto-char (posn-point posn))
- (let ((address
- (save-excursion (goto-address-find-address-at-point))))
- (if (string-equal address "")
- (let ((url (browse-url-url-at-point)))
- (if (string-equal url "")
- (error "No e-mail address or URL found")
- (funcall browse-url-browser-function url)))
- (funcall goto-address-mail-method address))))))
-
- ;;;###autoload
- (defun goto-address-at-point ()
- "Send to the e-mail address or load the URL at point.
- Send mail to address at point. See documentation for
- `goto-address-find-address-at-point'. If no address is found
- there, then load the URL at or before point."
- (interactive)
- (save-excursion
- (let ((address (save-excursion (goto-address-find-address-at-point))))
- (if (string-equal address "")
- (let ((url (browse-url-url-at-point)))
- (if (string-equal url "")
- (error "No e-mail address or URL found")
- (funcall browse-url-browser-function url)))
- (funcall goto-address-mail-method address)))))
-
- (defun goto-address-find-address-at-point ()
- "Find e-mail address around or before point.
- Then search backwards to beginning of line for the start of an e-mail
- address. If no e-mail address found, return the empty string."
- (let ((bol (save-excursion (beginning-of-line) (point))))
- (re-search-backward "[^-_A-z0-9.@]" bol 'lim)
- (if (or (looking-at goto-address-mail-regexp) ; already at start
- (let ((eol (save-excursion (end-of-line) (point))))
- (and (re-search-forward goto-address-mail-regexp eol 'lim)
- (goto-char (match-beginning 0)))))
- (buffer-substring (match-beginning 0) (match-end 0))
- "")))
-
- (defun goto-address-send-using-mh-e (to)
- (require 'mh-comp)
- (mh-find-path)
- (let ((cc (mh-read-address "Cc: "))
- (subject (read-string "Subject: "))
- (config (current-window-configuration)))
- (delete-other-windows)
- (mh-send-sub to cc subject config)))
-
- (fset 'goto-address-send-using-mhe 'goto-address-send-using-mh-e)
-
- (defun goto-address-send-using-mail (to)
- (mail-other-window nil to)
- (and (goto-char (point-min))
- (end-of-line 2)))
-
- ;;;###autoload
- (defun goto-address ()
- "Sets up goto-address functionality in the current buffer.
- Allows user to use mouse/keyboard command to click to go to a URL
- or to send e-mail.
- By default, goto-address binds to mouse-2 and C-c RET.
-
- Also fontifies the buffer appropriately (see `goto-address-fontify-p' and
- `goto-address-highlight-p' for more information)."
- (interactive)
- (local-set-key "\C-c\r" 'goto-address-at-point)
- (if goto-address-highlight-p
- (goto-address-fontify)))
-
- (provide 'goto-addr)
-
- ;;; goto-addr.el ends here.
-