lisp/ob-calc.el

   1 ;;; ob-calc.el --- org-babel functions for calc code 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 ;; Org-Babel support for evaluating calc code
  28
  29 ;;; Code:
  30 (require 'ob)
  31 (require 'calc)
  32 (require 'calc-trail)
  33 (eval-when-compile (require 'ob-comint))
  34
  35 (defvar org-babel-default-header-args:calc nil
  36   "Default arguments for evaluating an calc source block.")
  37
  38 (defun org-babel-expand-body:calc (body params)
  39   "Expand BODY according to PARAMS, return the expanded body." body)
  40
  41 (defun org-babel-execute:calc (body params)
  42   "Execute a block of calc code with Babel."
  43   (mapcar
  44    (lambda (line)
  45      (when (> (length line) 0)
  46        (if (string= "'" (substring line 0 1))
  47            (funcall (lookup-key calc-mode-map (substring line 1)) nil)
  48          (calc-push-list
  49           (list ((lambda (res)
  50                    (cond
  51                     ((numberp res) res)
  52                     ((listp res) (error "calc error \"%s\" on input \"%s\""
  53                                         (cadr res) line))
  54                     (t res))
  55                    (if (numberp res) res (math-read-number res)))
  56                  (calc-eval line)))))))
  57    (mapcar #'org-babel-trim
  58            (split-string (org-babel-expand-body:calc body params) "[\n\r]")))
  59   (save-excursion
  60     (set-buffer (get-buffer "*Calculator*"))
  61     (calc-eval (calc-top 1))))
  62
  63 (provide 'ob-calc)
  64
  65 ;; arch-tag: 5c57a3b7-5818-4c6c-acda-7a94831a6449
  66
  67 ;;; ob-calc.el ends here