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|
;;; html-view.el --- routines for communicating with a NCSA Mosaic process
;;;
;;; Some routines for communicating with a NCSA Mosaic process.
;;;
;;; Copyright (C) 1993 Ron Tapia tapia@hydra.unm.edu
;;; Copyright (C) 1994, 1995 Heiko Mnkel muenkel@tnt.uni-hannover.de
;;;
;;; VERSION: 1.10
;;; LAST MODIFIED: 20/07/95
;;; Keywords: comm unix wp help
;;;
;;; Adapted to the lemacs: 19.07.1993 Heiko Muenkel
;;; (muenkel@tnt.uni-hannover.de)
;;; Changed: 19.07.1993 by Heiko Muenkel
;;; Changed: 28.12.1993 by Heiko Muenkel
;;; Changed (signal-process id 30)
;;; to (signal-process id html-sigusr1-signal-value)
;;; Addapted the file for the new Mosaic-2.1
;;; Thanks to Neal Becker, who has reported this problem.
;;; The file now requires the package hm--html-menus.
;;; But you can also delete the line (require 'hm--html) and
;;; add a line like (setq html-sigusr1-signal-value 30)
;;; Changed: 10.01.1994 by Heiko Muenkel
;;; Fixed a bug.
;;; Changed: 16.12.1994 by Heiko Mnkel
;;; Addapted the file for Mosaic-2.4.
;;; Changed: 03.02.1995 by Heiko Mnkel
;;; The "view-buffer" is now different from the original buffer.
;;; So the name of the original buffer isn't change anymore.
;;; Changed: 02.04.1995 by Heiko Mnkel
;;; Integrated the changes from the XEmacs distribution.
;;; Changed: 20.07.1995 by Heiko Mnkel
;;; Fixed a bug in html-view-goto-url.
;;;
;;; This program 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.
;;;
;;; This program 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, 675 Mass Ave, Cambridge, MA 02139, USA.
;;;
;;; Commentary:
;;; To use, just set the value of html-view-mosaic-command to whatever you
;;; use to run NCSA Mosaic. You may have to set html-view-tmp-file.
;;; Type M-x html-view-start-mosaic <ret>.
;;; Afterwards, view files/buffers with html-view-view-file/
;;; html-view-view-buffer. There's also a command, of dubious utility,
;;; for jumping to particular documents: html-view-goto-url
;;;
;;; If you have any questions or comments mail to tapia@hydra.unm.edu.
(require 'adapt)
(require 'hm--html)
(defvar html-view-mosaic-process nil "The NCSA Mosaic Process")
(defvar html-view-mosaic-command "mosaic"
"The command that runs Mosaic on your system")
(defvar html-view-mosaic-tmp-file-prefix "/tmp/Mosaic."
"Prefix for the temp files, which are used by Mosaic.
For old versions this must be \"/tmp/xmosaic.\".
For new versions it is \"/tmp/Mosaic.\".")
(defvar html-view-tmp-file (concat "/tmp/mosaic.html-"
(user-login-name)
(emacs-pid))
"File where buffers are saved for viewing by Mosaic")
(defvar html-view-display nil "The display that Mosaic is using.")
(defvar html-view-wait-counter 100000
"*Counter for a wait loop.
The wait loop is beween the start of the Mosaic and the command
`set-process-sentinel'. If Mosaic don't start, then you must set
this value higher. You can try to set it to a lower number otherwise.")
;;;###autoload
(defun html-view-start-mosaic ()
"Start Mosaic."
(interactive)
(or (stringp html-view-display)
(call-interactively 'html-view-get-display))
(or (and (processp html-view-mosaic-process)
(eq (process-status html-view-mosaic-process) 'run))
(progn (setq html-view-mosaic-process
(start-process "mosaic" "mosaic"
html-view-mosaic-command
"-display" html-view-display))
(let ((i html-view-wait-counter))
(while (> i 0)
(setq i (1- i))))
(set-process-sentinel html-view-mosaic-process
'html-view-mosaic-process-sentinel))))
;;;###autoload
(defun html-view-view-file (filename)
"View an html file with Mosaic."
(interactive "fFile to view: ")
(or (and (processp html-view-mosaic-process)
(eq (process-status html-view-mosaic-process) 'run))
(html-view-start-mosaic))
(if (and (processp html-view-mosaic-process)
(eq (process-status html-view-mosaic-process) 'run))
(progn
(let ((buffer (process-buffer html-view-mosaic-process))
(id (process-id html-view-mosaic-process))
(file nil))
(save-excursion
(set-buffer buffer)
(erase-buffer)
(setq file (format "%s%s" html-view-mosaic-tmp-file-prefix id))
(set-visited-file-name file)
;; (set-visited-file-name (concat "/tmp/Mosaic."
;; (number-to-string id)))
(insert-before-markers "goto\n")
(insert-before-markers (concat
"file://"
(expand-file-name filename)))
(save-buffer)
(signal-process id html-sigusr1-signal-value))))
(message "Can't start mosaic process.")))
;;;###autoload
(defun html-view-view-buffer (&optional buffer-to-view)
"View html buffer with Mosaic.
If BUFFER-TO-VIEW is nil, then the current buffer is used."
(interactive)
(or (bufferp buffer-to-view)
(setq buffer-to-view (current-buffer)))
(save-excursion
(find-file html-view-tmp-file)
(insert-buffer buffer-to-view)
(write-file html-view-tmp-file)
(html-view-view-file html-view-tmp-file)))
;;;###autoload
(defun html-view-goto-url (url)
"Goto an URL in Mosaic."
(interactive "sURL: ")
(or (processp html-view-mosaic-process)
(html-view-start-mosaic))
(if (processp html-view-mosaic-process)
(progn
(let ((buffer (process-buffer html-view-mosaic-process))
(id (process-id html-view-mosaic-process))
(file nil))
(save-excursion
(set-buffer buffer)
(erase-buffer)
;; (setq file (format "%s%s" "/tmp/xmosaic." id))
(setq file (format "%s%s" html-view-mosaic-tmp-file-prefix id))
(set-visited-file-name file)
;; (set-visited-file-name (concat "/tmp/Mosaic."
;; (number-to-string id)))
(insert-before-markers "goto\n")
(insert-before-markers url)
(save-buffer)
(signal-process id html-sigusr1-signal-value))))
(message "Can't start mosaic process.")))
;;;###autoload
(defun html-view-get-display (display)
"Get the display for Mosaic."
(interactive "sDisplay: ")
(setq html-view-display display))
(defun html-view-mosaic-process-sentinel (proc, event)
(cond ((or (string-match "exited abnormally with code" event)
(string-match "finished" event))
(message event)
(setq html-view-mosaic-process nil))
(t (message event))))
(provide 'html-view)
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