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