99 lines
3.5 KiB
EmacsLisp
99 lines
3.5 KiB
EmacsLisp
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;;; -*- mode: emacs-lisp; lexical-binding: t; -*-
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;;; ein-skewer.el --- Cell module
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;; (C) 2016 - John M Miller
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;; Author: John M Miller <millejoh at mac.com>
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;; This file is NOT part of GNU Emacs.
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;; ein-skewer.el 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 3 of the License, or
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;; (at your option) any later version.
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;; ein-skewre.el 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 ein-cell.el. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This depends on the skewer package, so likely will get split into
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;; its own package at some point.
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;;; Code:
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(require 'skewer-mode)
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(require 'skewer-html)
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(require 'simple-httpd)
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(defvar *ein:skewer-running-p* nil "True if the emacs httpd server has been started.")
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(defun ein:js-prepare-result (result type)
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(list :output_type type :text result))
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(defun ein:update-javascript-output (cell json result)
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(let ((val (ein:js-prepare-result
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(or (cdr (assoc 'value result)) "See browser for result.")
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(plist-get json :output_type))))
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(setf (slot-value cell 'outputs) (list val))
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(ein:cell-append-output cell val (slot-value cell 'dynamic))))
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(defservlet current-jupyter-cell-output text/html (path)
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(let ((cell-id (file-name-nondirectory path)))
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(insert (gethash cell-id *ein:skewer-cell-output-cache*))))
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(defvar *ein:skewer-html-template*
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"<html>
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<head>
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<title>Emacs IPython Notebook</title>
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<script src=\"/skewer\"></script>
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</head>
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<body>
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%s
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</body>
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</html>")
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(defvar *ein:skewer-cell-output-cache* (make-hash-table :test #'equal))
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(defun ein:skewer--handle-html (cell string)
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(setf (gethash (slot-value cell 'cell-id) *ein:skewer-cell-output-cache*)
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(format *ein:skewer-html-template* string) ))
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;; Format of result is ((id . STR) (type . STR) (status . STR) (value . STR) (time . FLOAT))
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(defun ein:execute-javascript (cell json)
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(unless (httpd-running-p) ;; *ein:skewer-running-p*
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(run-skewer))
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(deferred:$
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(deferred:next
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(lambda ()
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(let ((result nil))
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(ein:aif (plist-get json :html)
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(progn
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(let ((cell-id (slot-value cell 'cell-id)))
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(ein:skewer--handle-html cell it)
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(setq result (list '(id . nil)
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'(type . str)
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'(stats . nil)
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(cons 'value (format "Open http://localhost:8080/current-jupyter-cell-output/%s" cell-id))
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'(time . nil)))
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(browse-url (format "http://localhost:8080/current-jupyter-cell-output/%s" cell-id))))
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(skewer-eval (plist-get json :javascript)
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(lambda (v)
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(setq result v))
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:type (if (plist-get json :html)
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"html"
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"eval")))
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(cl-loop until result
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do (accept-process-output nil 0.01)
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finally (return result)))))
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(deferred:nextc it
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(lambda (result)
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(ein:update-javascript-output cell json result)))))
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(provide 'ein-skewer)
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