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-;;; ob-dot.el --- org-babel functions for dot evaluation
-
-;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
-
-;; Author: Eric Schulte
-;; Keywords: literate programming, reproducible research
-;; Homepage: http://orgmode.org
-;; Version: 7.4
-
-;; 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 <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; Org-Babel support for evaluating dot source code.
-;;
-;; For information on dot see http://www.graphviz.org/
-;;
-;; This differs from most standard languages in that
-;;
-;; 1) there is no such thing as a "session" in dot
-;;
-;; 2) we are generally only going to return results of type "file"
-;;
-;; 3) we are adding the "file" and "cmdline" header arguments
-;;
-;; 4) there are no variables (at least for now)
-
-;;; Code:
-(require 'ob)
-(require 'ob-eval)
-
-(defvar org-babel-default-header-args:dot
- '((:results . "file") (:exports . "results"))
- "Default arguments to use when evaluating a dot source block.")
-
-(defun org-babel-expand-body:dot (body params)
- "Expand BODY according to PARAMS, return the expanded body."
- (let ((vars (mapcar #'cdr (org-babel-get-header params :var))))
- (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))))
- vars)
- body))
-
-(defun org-babel-execute:dot (body params)
- "Execute a block of Dot code with org-babel.
-This function is called by `org-babel-execute-src-block'."
- (let* ((result-params (cdr (assoc :result-params params)))
- (out-file (cdr (assoc :file params)))
- (cmdline (or (cdr (assoc :cmdline params))
- (format "-T%s" (file-name-extension out-file))))
- (cmd (or (cdr (assoc :cmd params)) "dot"))
- (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)) "")
- out-file))
-
-(defun org-babel-prep-session:dot (session params)
- "Return an error because Dot does not support sessions."
- (error "Dot does not support sessions"))
-
-(provide 'ob-dot)
-
-;; arch-tag: 817d0516-7b47-4f77-a8b2-2aadd8e4d0e2
-
-;;; ob-dot.el ends here