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hello-test
Allard Hendriksen 2018-01-02 18:58:25 +01:00
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;;; ob-tmux.el --- Babel Support for Interactive Terminal -*- lexical-binding: t; -*-
;; Copyright (C) 2009-2017 Free Software Foundation, Inc.
;; Author: Benjamin Andresen, Allard Hendriksen
;; Keywords: literate programming, interactive shell
;; Homepage: http://orgmode.org
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Org-Babel support for interactive terminals. Mostly shell scripts.
;; Heavily inspired by 'eev' from Eduardo Ochs
;;
;; Adding :cmd and :terminal as header arguments
;; :terminal must support the -T (title) and -e (command) parameter
;;
;; You can test the default setup. (xterm + sh) with
;; M-x org-babel-tmux-test RET
;;; Code:
(require 'ob)
(defvar org-babel-tmux-location "tmux"
"The command location for tmux.
In case you want to use a different tmux than one selected by your $PATH")
(defvar org-babel-default-header-args:tmux
'((:results . "silent") (:session . "default") (:cmd . "bash") (:terminal . "gnome-terminal"))
"Default arguments to use when running tmux source blocks.")
(defun org-babel-execute:tmux (body params)
"Send a block of code via tmux to a terminal using Babel.
\"default\" session is used when none is specified."
(message "Sending source code block to interactive terminal session...")
(save-window-excursion
(let* ((session (cdr (assq :session params)))
(socket (org-babel-tmux-session-socketname session)))
(unless socket (org-babel-prep-session:tmux session params))
(org-babel-tmux-session-execute-string
session (org-babel-expand-body:generic body params)))))
(defun org-babel-prep-session:tmux (_session params)
"Prepare SESSION according to the header arguments specified in PARAMS."
(let* ((session (cdr (assq :session params)))
(cmd (cdr (assq :cmd params)))
(terminal (cdr (assq :terminal params)))
(process-name (concat "org-babel: terminal (" session ")")))
(apply 'start-process process-name "*Messages*"
terminal
`("--"
,org-babel-tmux-location
"new-session" "-A" "-s"
,(concat "org-babel-session-" session)))
;; XXX: Is there a better way than the following?
(while (not (org-babel-tmux-session-socketname session))
;; wait until tmux session is available before returning
)))
;; helper functions
(defun org-babel-tmux-session-execute-string (session body)
"If SESSION exists, send BODY to it."
(let ((socket (org-babel-tmux-session-socketname session)))
(when socket
(let ((tmpfile (org-babel-tmux-session-write-temp-file session body)))
(shell-command
(concat "cat " tmpfile
" | xargs -I{} tmux send-keys -t org-babel-session-" session ":1 '{}' Enter"))))))
(defun org-babel-tmux-session-socketname (session)
"Check if SESSION exists by parsing output of \"tmux ls\"."
(let* ((tmux-ls (shell-command-to-string "tmux ls"))
(sockets (delq
nil
(mapcar
(lambda (x)
(when (string-match (rx "windows") x)
x))
(split-string tmux-ls "\n"))))
(match-socket (car
(delq
nil
(mapcar
(lambda (x)
(when (string-match
(concat "org-babel-session-" session) x)
x))
sockets)))))
(when match-socket (car (split-string match-socket ":")))))
(defun org-babel-tmux-session-write-temp-file (_session body)
"Save BODY in a temp file that is named after SESSION."
(let ((tmpfile (org-babel-temp-file "ob-tmux-")))
(with-temp-file tmpfile
(insert body)
;; org-babel has superfluous spaces
(goto-char (point-min))
(delete-matching-lines "^ +$"))
tmpfile))
;; (defun org-babel-screen-test ()
;; "Test if the default setup works.
;; The terminal should shortly flicker."
;; (interactive)
;; (let* ((random-string (format "%s" (random 99999)))
;; (tmpfile (org-babel-temp-file "ob-screen-test-"))
;; (body (concat "echo '" random-string "' > " tmpfile "\nexit\n"))
;; tmp-string)
;; (org-babel-execute:screen body org-babel-default-header-args:screen)
;; ;; XXX: need to find a better way to do the following
;; (while (not (file-readable-p tmpfile))
;; ;; do something, otherwise this will be optimized away
;; (format "org-babel-screen: File not readable yet."))
;; (setq tmp-string (with-temp-buffer
;; (insert-file-contents-literally tmpfile)
;; (buffer-substring (point-min) (point-max))))
;; (delete-file tmpfile)
;; (message (concat "org-babel-screen: Setup "
;; (if (string-match random-string tmp-string)
;; "WORKS."
;; "DOESN'T work.")))))
(provide 'ob-tmux)
;;; ob-tmux.el ends here