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Open browser preview via http call

pull/23/head
Igor Shymko 6 years ago
parent
commit
7fb0f3bd11
  1. 92
      markdown-preview-mode.el

92
markdown-preview-mode.el

@ -34,6 +34,7 @@
(require 'websocket)
(require 'markdown-mode)
(require 'web-server)
(require 'url-util)
(defgroup markdown-preview nil
"Markdown preview mode."
@ -67,6 +68,13 @@
:group 'markdown-preview
:type 'string)
(defcustom markdown-preview-auto-open 'http
"Markdown preview websocket server address."
:group 'markdown-preview
:type '(choice (const :tag "As local file" file)
(const :tag "Via http" 'http)
(const :tag "Off" nil)))
(defvar markdown-preview-javascript (list "http://code.jquery.com/jquery-1.11.0.min.js")
"List of javascript libs for preview.")
@ -91,43 +99,55 @@
(when (timerp markdown-preview--idle-timer)
(cancel-timer markdown-preview--idle-timer)))
(defun markdown-preview--read-preview-template (preview-file)
"Reads preview template and writes rendered copy to `preview-file', ready to be open in browser."
(with-temp-file preview-file
(insert-file-contents markdown-preview--preview-template)
(if (search-forward "${MD_STYLE}" nil t)
(replace-match markdown-preview-style t))
(if (search-forward "${MD_JS}" nil t)
(replace-match
(mapconcat (lambda (x)
(concat
"<script src=\"" (if (consp x) (car x) x) "\""
(if (consp x) (format " %s" (cdr x)))
"></script>"))
markdown-preview-javascript
"\n")
t))
(if (search-forward "${WS_HOST}" nil t)
(replace-match markdown-preview-ws-host t))
(if (search-forward "${WS_PORT}" nil t)
(replace-match (format "%s" markdown-preview-ws-port) t))
(buffer-string)))
(defun markdown-preview--start-http-server (port)
"Start http server at `port' to serve preview file via http."
(lexical-let ((docroot default-directory))
(ws-start
(lambda (request)
(with-slots (process headers) request
(let ((path (substring (cdr (assoc :GET headers)) 1)))
(if (ws-in-directory-p docroot path)
(if (file-directory-p path)
(ws-send-directory-list process
(expand-file-name path docroot) "^[^\.]")
(ws-send-file process (expand-file-name path docroot)))
(ws-send-404 process)))))
markdown-preview-http-port)))
(defun markdown-preview--open-browser-preview ()
"Open the markdown preview in the browser."
(let* ((dir-of-buffer-to-preview (file-name-directory (buffer-file-name)))
(preview-file (concat dir-of-buffer-to-preview markdown-preview-file-name)))
(with-temp-file preview-file
(insert-file-contents markdown-preview--preview-template)
(if (search-forward "${MD_STYLE}" nil t)
(replace-match markdown-preview-style t))
(if (search-forward "${MD_JS}" nil t)
(replace-match
(mapconcat (lambda (x)
(concat "<script src=\"" (if (consp x) (car x) x) "\"" (if (consp x) (format " %s" (cdr x))) "></script>" ))
markdown-preview-javascript
"\n")
t))
(if (search-forward "${WS_HOST}" nil t)
(replace-match markdown-preview-ws-host t))
(if (search-forward "${WS_PORT}" nil t)
(replace-match (format "%s" markdown-preview-ws-port) t))
(buffer-string))
(lexical-let ((docroot default-directory))
(ws-start
(lambda (request)
(with-slots (process headers) request
(let ((path (substring (cdr (assoc :GET headers)) 1)))
(if (ws-in-directory-p docroot path)
(if (file-directory-p path)
(ws-send-directory-list process
(expand-file-name path docroot) "^[^\.]")
(ws-send-file process (expand-file-name path docroot)))
(ws-send-404 process)))))
markdown-preview-http-port))
(setq markdown-preview-http-port (+ markdown-preview-http-port 1))
(browse-url preview-file)))
(let* ((preview-file (expand-file-name markdown-preview-file-name default-directory))
(preview-address (url-encode-url
(format "http://localhost:%d/%s" markdown-preview-http-port markdown-preview-file-name))))
(markdown-preview--read-preview-template preview-file)
(when (eq markdown-preview-auto-open 'file)
(browse-url preview-file))
(when (eq markdown-preview-auto-open 'http)
(browse-url preview-address))
(unless markdown-preview-auto-open
(message (format "Preview address: %s" preview-address)))))
(defun markdown-preview--stop-websocket-server ()
"Stop the `markdown-preview' websocket server."
@ -204,6 +224,7 @@
"Start `markdown-preview' mode."
(markdown-preview--start-websocket-server)
(markdown-preview--start-local-client)
(markdown-preview--start-http-server markdown-preview-http-port)
(setq markdown-preview--idle-timer
(run-with-idle-timer 2 t (lambda () (markdown-preview--send-preview))))
(add-hook 'after-save-hook 'markdown-preview--send-preview nil t))
@ -212,6 +233,7 @@
"Stop `markdown-preview' mode."
(remove-hook 'after-save-hook 'markdown-preview--send-preview t)
(markdown-preview--stop-idle-timer)
(ws-stop-all)
(let ((preview-file (concat (file-name-directory (buffer-file-name)) markdown-preview-file-name)))
(if (file-exists-p preview-file)
(delete-file preview-file))))

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