The ultimate editor for true believers https://fg42.org
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

85 lines
2.9 KiB

;;; ob-gharphviz --- org-babel functions for gharphviz evaluation of FG42
;;
;; Copyright (c) 2010-2022 Sameer Rahmani & Contributors
;;
;; Author: Sameer Rahmani <lxsameer@gnu.org>
;; URL: https://gitlab.com/FG42/FG42
;; Version: 3.0.0
;;
;; 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 3 of the License, 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;; This file location is important and can't be under `fg42/' dir even
;; though it is part of the FG42. That's due to the `org-babel' mechanism
;; to automatically load the language backend. SO DO NOT MOVE IT.
;;; Code:
(require 'ob)
(require 'ob-ref)
(require 'ob-comint)
(require 'ob-eval)
(require 'ob-dot)
(add-to-list 'org-babel-tangle-lang-exts '("graphviz-dot" . "dot"))
(defvar org-babel-default-header-args:graphviz-dot
'((:results . "file") (:exports . "results")))
(defun org-babel-expand-body:ghraphviz-dot (body params &optional processed-params)
"Expand BODY according to PARAMS, return the expanded body."
(let ((vars (org-babel--get-vars params)))
(mapc
(lambda (pair)
(let ((name (symbol-name (car pair)))
(value (cdr pair)))
(setq body
(replace-regexp-in-string
(concat "$" (regexp-quote name))
(if (stringp value) value (format "%S" value))
body
t
t))))
vars)
body))
(defun org-babel-execute:graphviz-dot (body params)
"Execute a block of Template code with org-babel.
This function is called by `org-babel-execute-src-block'"
(let* ((out-file (cdr (or (assq :file params)
(error "You need to specify a :file parameter"))))
(cmdline (or (cdr (assq :cmdline params))
(format "-T%s" (file-name-extension out-file))))
(cmd (or (cdr (assq :cmd params)) "dot"))
(coding-system-for-read 'utf-8) ;use utf-8 with sub-processes
(coding-system-for-write 'utf-8)
(in-file (org-babel-temp-file "dot-")))
(with-temp-file in-file
(insert (org-babel-expand-body:dot body params)))
(org-babel-eval
(concat cmd
" " (org-babel-process-file-name in-file)
" " cmdline
" -o " (org-babel-process-file-name out-file)) "")
;; signal that output has already been written to file
nil))
(defun org-babel-prep-session:graphviz-dot (session params)
"Prepare SESSION according to the header arguments specified in PARAMS."
(error "Dot does not support sessions"))
(provide 'ob-graphviz-dot)
;;; ob-graphviz-dot.el ends here