lisp/ob-org.el

   1 ;;; ob-org.el --- org-babel functions for org code block evaluation
   2
   3 ;; Copyright (C) 2010  Free Software Foundation, Inc.
   4
   5 ;; Author: Eric Schulte
   6 ;; Keywords: literate programming, reproducible research
   7 ;; Homepage: http://orgmode.org
   8 ;; Version: 7.01trans
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Commentary:
  26
  27 ;; This is the simplest of code blocks, where upon evaluation the
  28 ;; contents of the code block are returned in a raw result.
  29
  30 ;;; Code:
  31 (require 'ob)
  32
  33 (declare-function org-load-modules-maybe "org" (&optional force))
  34 (declare-function org-get-local-variables "org" ())
  35
  36 (defvar org-babel-default-header-args:org
  37   '((:results . "raw silent") (:exports . "results"))
  38   "Default arguments for evaluating a org source block.")
  39
  40 (defvar org-babel-org-default-header
  41   "#+TITLE: default empty header\n"
  42   "Default header inserted during export of org blocks.")
  43
  44 (defun org-babel-expand-body:org (body params &optional processed-params)
  45   "Expand BODY according to PARAMS, return the expanded body." body)
  46
  47 (defun org-babel-execute:org (body params)
  48   "Execute a block of Org code with.
  49 This function is called by `org-babel-execute-src-block'."
  50   (let ((result-params (split-string (or (cdr (assoc :results params)) ""))))
  51     (cond
  52      ((member "latex" result-params) (org-babel-org-export body "latex"))
  53      ((member "html" result-params)  (org-babel-org-export body "html"))
  54      ((member "ascii" result-params) (org-babel-org-export body "ascii"))
  55      (t body))))
  56
  57 (defvar org-local-vars)
  58 (defun org-babel-org-export (body fmt)
  59   "Export BODY to FMT using Org-mode's export facilities. "
  60   (let ((tmp-file (org-babel-temp-file "org-")))
  61     (with-temp-buffer
  62       (insert org-babel-org-default-header)
  63       (insert body)
  64       (write-file tmp-file)
  65       (org-load-modules-maybe)
  66       (unless org-local-vars
  67         (setq org-local-vars (org-get-local-variables)))
  68       (eval ;; convert to fmt -- mimicing `org-run-like-in-org-mode'
  69        (list 'let org-local-vars
  70              (list (intern (concat "org-export-as-" fmt))
  71                    nil nil nil ''string t))))))
  72
  73 (defun org-babel-prep-session:org (session params)
  74   "Return an error because org does not support sessions."
  75   (error "Org does not support sessions"))
  76
  77 (provide 'ob-org)
  78
  79 ;; arch-tag: 130af5fe-cc56-46bd-9508-fa0ebd94cb1f
  80
  81 ;;; ob-org.el ends here