A JavaScript development environment for Emacs
https://indium.readthedocs.io
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73 lines
2.6 KiB
73 lines
2.6 KiB
;;; jade-chrome.el --- Chrom{e|ium} support for jade -*- lexical-binding: t; -*-
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;; Copyright (C) 2016 Nicolas Petton
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;; Author: Nicolas Petton <nicolas@petton.fr>
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;; Keywords: tools, javascript
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;; This program 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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;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Handle jade connections to Chrom{e|ium} using the webkit backend.
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;;
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;; To open a Jade connection, enable chromium/chrome remote debugging:
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;;
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;; chromium --remote-debugging-port=9222 https://gnu.org
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;;; Code:
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(require 'url)
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(require 'json)
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(require 'map)
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(require 'seq)
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(require 'jade-webkit)
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(defun jade-connect-to-chrome (host port)
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"Open a connection to a webkit tab on HOST:PORT."
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(interactive (list (read-from-minibuffer "Host: " "127.0.0.1")
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(read-from-minibuffer "Port: " "9222")))
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(jade-chrome--get-tabs-data host port #'jade-chrome--connect-to-tab))
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(defun jade-chrome--get-tabs-data (host port callback)
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"Get the list of open tabs on HOST:PORT and evaluate CALLBACK with it."
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(url-retrieve (format "http://%s:%s/json" host port)
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(lambda (_status)
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;; TODO: handle errors
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(funcall callback (jade-chrome--read-tab-data)))))
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(defun jade-chrome--connect-to-tab (tabs)
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"Ask the user for a tab in the list TABS and connects to it."
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(let* ((urls (seq-map (lambda (tab)
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(map-elt tab 'url))
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tabs))
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(url (completing-read "Tab: " urls nil t))
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(tab (seq-find (lambda (tab)
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(string= (map-elt tab 'url) url))
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tabs))
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(websocket-url (map-elt tab 'webSocketDebuggerUrl)))
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(jade-webkit--open-ws-connection url websocket-url)))
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(defun jade-chrome--read-tab-data ()
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"Return the JSON tabs data in the current buffer."
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(when (save-match-data
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(looking-at "^HTTP/1\\.1 200 OK$"))
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(goto-char (point-min))
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(search-forward "\n\n")
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(delete-region (point-min) (point))
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(json-read)))
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(provide 'jade-chrome)
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;;; jade-chrome.el ends here
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