72 lines
2.4 KiB
EmacsLisp
72 lines
2.4 KiB
EmacsLisp
;;; org-babel-dot.el --- org-babel functions for dot evaluation
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;; Copyright (C) 2009 Eric Schulte
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; Version: 0.01
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;;; License:
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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, or (at your option)
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;; any later version.
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;;
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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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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; Org-Babel support for evaluating dot source code.
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;;
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;; For information on dot see http://www.graphviz.org/
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;;
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;; This differs from most standard languages in that
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;;
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;; 1) there is no such thing as a "session" in dot
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;;
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;; 2) we are generally only going to return results of type "file"
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;;
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;; 3) we are adding the "file" and "cmdline" header arguments
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;;
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;; 4) there are no variables (at least for now)
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;;; Code:
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(require 'org-babel)
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(org-babel-add-interpreter "dot")
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(add-to-list 'org-babel-tangle-langs '("dot" "dot"))
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(defvar org-babel-default-header-args:dot '((:results . "file") (:exports . "results"))
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"Default arguments to use when evaluating a dot source block.")
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(defun org-babel-execute:dot (body params)
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"Execute a block of Dot code with org-babel. This function is
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called by `org-babel-execute-src-block'."
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(message "executing Dot source code block")
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(let ((result-params (split-string (or (cdr (assoc :results params)) "")))
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(out-file (cdr (assoc :file params)))
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(cmdline (cdr (assoc :cmdline params)))
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(cmd (or (cdr (assoc :cmd params)) "dot"))
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(in-file (make-temp-file "org-babel-dot")))
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(with-temp-file in-file (insert body))
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(message (concat cmd " " in-file " " cmdline " -o " out-file))
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(shell-command (concat cmd " " in-file " " cmdline " -o " out-file))
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out-file))
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(defun org-babel-prep-session:dot (session params)
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(error "Dot does not support sessions"))
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(provide 'org-babel-dot)
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;;; org-babel-dot.el ends here
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