1 ;;; ob-maxima.el --- org-babel functions for maxima evaluation
3 ;; Copyright (C) 2009-2014 Free Software Foundation, Inc.
5 ;; Author: Eric S Fraga
7 ;; Keywords: literate programming, reproducible research, maxima
8 ;; Homepage: http://orgmode.org
10 ;; This file is part of GNU Emacs.
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.
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.
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/>.
27 ;; Org-Babel support for evaluating maxima entries.
29 ;; This differs from most standard languages in that
31 ;; 1) there is no such thing as a "session" in maxima
33 ;; 2) we are adding the "cmdline" header argument
38 (defvar org-babel-tangle-lang-exts)
39 (add-to-list 'org-babel-tangle-lang-exts '("maxima" . "max"))
41 (defvar org-babel-default-header-args:maxima '())
43 (defcustom org-babel-maxima-command
44 (if (boundp 'maxima-command) maxima-command "maxima")
45 "Command used to call maxima on the shell."
49 (defun org-babel-maxima-expand (body params)
50 "Expand a block of Maxima code according to its header arguments."
51 (let ((vars (mapcar #'cdr (org-babel-get-header params :var))))
55 (let ((graphic-file (org-babel-maxima-graphical-output-file params)))
58 "set_plot_option ([gnuplot_term, png]); set_plot_option ([gnuplot_out_file, %S]);"
62 (mapconcat 'org-babel-maxima-var-to-maxima vars "\n")
68 (defun org-babel-execute:maxima (body params)
69 "Execute a block of Maxima entries with org-babel.
70 This function is called by `org-babel-execute-src-block'."
71 (message "executing Maxima source code block")
72 (let ((result-params (split-string (or (cdr (assoc :results params)) "")))
74 (let* ((cmdline (or (cdr (assoc :cmdline params)) ""))
75 (in-file (org-babel-temp-file "maxima-" ".max"))
76 (cmd (format "%s --very-quiet -r 'batchload(%S)$' %s"
77 org-babel-maxima-command in-file cmdline)))
78 (with-temp-file in-file (insert (org-babel-maxima-expand body params)))
80 ;; " | grep -v batch | grep -v 'replaced' | sed '/^$/d' "
81 (let ((raw (org-babel-eval cmd "")))
85 (mapcar (lambda (line)
86 (unless (or (string-match "batch" line)
87 (string-match "^rat: replaced .*$" line)
88 (string-match "^;;; Loading #P" line)
91 (split-string raw "[\r\n]"))) "\n")))))
92 (if (org-babel-maxima-graphical-output-file params)
94 (org-babel-result-cond result-params
96 (let ((tmp-file (org-babel-temp-file "maxima-res-")))
97 (with-temp-file tmp-file (insert result))
98 (org-babel-import-elisp-from-file tmp-file))))))
101 (defun org-babel-prep-session:maxima (session params)
102 (error "Maxima does not support sessions"))
104 (defun org-babel-maxima-var-to-maxima (pair)
105 "Convert an elisp val into a string of maxima code specifying a var
107 (let ((var (car pair))
110 (setq val (symbol-name val))
111 (when (= (length val) 1)
112 (setq val (string-to-char val))))
113 (format "%S: %s$" var
114 (org-babel-maxima-elisp-to-maxima val))))
116 (defun org-babel-maxima-graphical-output-file (params)
117 "Name of file to which maxima should send graphical output."
118 (and (member "graphics" (cdr (assq :result-params params)))
119 (cdr (assq :file params))))
121 (defun org-babel-maxima-elisp-to-maxima (val)
122 "Return a string of maxima code which evaluates to VAL."
124 (concat "[" (mapconcat #'org-babel-maxima-elisp-to-maxima val ", ") "]")
132 ;;; ob-maxima.el ends here