lisp/ob-maxima.el

   1 ;;; ob-maxima.el --- org-babel functions for maxima evaluation
   2
   3 ;; Copyright (C) 2009-2011  Free Software Foundation, Inc.
   4
   5 ;; Author: Eric S Fraga
   6 ;;         Eric Schulte
   7 ;; Keywords: literate programming, reproducible research, maxima
   8 ;; Homepage: http://orgmode.org
   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 maxima entries.
  28 ;;
  29 ;; This differs from most standard languages in that
  30 ;;
  31 ;; 1) there is no such thing as a "session" in maxima
  32 ;;
  33 ;; 2) we are generally only going to return output from maxima
  34 ;;
  35 ;; 3) we are adding the "cmdline" header argument
  36 ;;
  37 ;; 4) there are no variables
  38
  39 ;;; Code:
  40 (require 'ob)
  41
  42 (defvar org-babel-default-header-args:maxima '())
  43
  44 (defun org-babel-maxima-expand (body params)
  45   "Expand a block of Maxima code according to its header arguments."
  46   body)
  47
  48 (defun org-babel-execute:maxima (body params)
  49   "Execute a block of Maxima entries with org-babel.  This function is
  50 called by `org-babel-execute-src-block'."
  51   (message "executing Maxima source code block")
  52   (let* ((result-params (split-string (or (cdr (assoc :results params)) "")))
  53          (cmdline (cdr (assoc :cmdline params)))
  54          (in-file (org-babel-temp-file "maxima-"))
  55          (cmd (format "maxima --very-quiet -r 'batchload(%S)$' %s"
  56                       in-file cmdline)))
  57     (with-temp-file in-file (insert body))
  58     (message cmd)
  59     ((lambda (raw) ;; " | grep -v batch | grep -v 'replaced' | sed '/^$/d' "
  60        (mapconcat
  61         #'identity
  62         (delq nil
  63               (mapcar (lambda (line)
  64                         (unless (or (string-match "batch" line)
  65                                     (string-match "^rat: replaced .*$" line)
  66                                     (= 0 (length line)))
  67                           line))
  68                       (split-string raw "[\r\n]"))) "\n"))
  69      (org-babel-eval cmd ""))))
  70
  71 (defun org-babel-prep-session:maxima (session params)
  72   (error "Maxima does not support sessions"))
  73
  74 (provide 'ob-maxima)
  75
  76
  77
  78 ;;; ob-maxima.el ends here