org-mode/lisp/ob-maxima.el
Bastien Guerry 6e534f9c61 Manually revert back to commit e85080.
This fixes a wrong merge that should not have happened:
commit 7e903a merges the master branch into the maint branch,
while we really want to keep the maint branch a bugfix-only
branch.

This commit reverts back the maint branch to its state before
merging the master branch.  From there, we will fix remaining
problems with the maint branch (e.g. copyright issues) then
release this maint branch as Org-mode 7.8.05.
2012-03-17 14:34:01 +01:00

128 lines
4.1 KiB
EmacsLisp

;;; ob-maxima.el --- org-babel functions for maxima evaluation
;; Copyright (C) 2009-2011 Free Software Foundation, Inc.
;; Author: Eric S Fraga
;; Eric Schulte
;; Keywords: literate programming, reproducible research, maxima
;; Homepage: http://orgmode.org
;; 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 maxima entries.
;;
;; This differs from most standard languages in that
;;
;; 1) there is no such thing as a "session" in maxima
;;
;; 2) we are adding the "cmdline" header argument
;;; Code:
(require 'ob)
(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("maxima" . "max"))
(defvar org-babel-default-header-args:maxima '())
(defun org-babel-maxima-expand (body params)
"Expand a block of Maxima code according to its header arguments."
(let ((vars (mapcar #'cdr (org-babel-get-header params :var))))
(mapconcat 'identity
(list
;; graphic output
(let ((graphic-file (org-babel-maxima-graphical-output-file params)))
(if graphic-file
(format
"set_plot_option ([gnuplot_term, png]); set_plot_option ([gnuplot_out_file, %S]);"
graphic-file)
""))
;; variables
(mapconcat 'org-babel-maxima-var-to-maxima vars "\n")
;; body
body
"gnuplot_close ()$")
"\n")))
(defun org-babel-execute:maxima (body params)
"Execute a block of Maxima entries with org-babel. This function is
called by `org-babel-execute-src-block'."
(message "executing Maxima source code block")
(let ((result-params (split-string (or (cdr (assoc :results params)) "")))
(result
(let* ((cmdline (cdr (assoc :cmdline params)))
(in-file (org-babel-temp-file "maxima-" ".max"))
(cmd (format "maxima --very-quiet -r 'batchload(%S)$' %s"
in-file cmdline)))
(with-temp-file in-file (insert (org-babel-maxima-expand body params)))
(message cmd)
((lambda (raw) ;; " | grep -v batch | grep -v 'replaced' | sed '/^$/d' "
(mapconcat
#'identity
(delq nil
(mapcar (lambda (line)
(unless (or (string-match "batch" line)
(string-match "^rat: replaced .*$" line)
(= 0 (length line)))
line))
(split-string raw "[\r\n]"))) "\n"))
(org-babel-eval cmd "")))))
(if (org-babel-maxima-graphical-output-file params)
nil
(if (or (member "scalar" result-params)
(member "verbatim" result-params)
(member "output" result-params))
result
(let ((tmp-file (org-babel-temp-file "maxima-res-")))
(with-temp-file tmp-file (insert result))
(org-babel-import-elisp-from-file tmp-file))))))
(defun org-babel-prep-session:maxima (session params)
(error "Maxima does not support sessions"))
(defun org-babel-maxima-var-to-maxima (pair)
"Convert an elisp val into a string of maxima code specifying a var
of the same value."
(let ((var (car pair))
(val (cdr pair)))
(when (symbolp val)
(setq val (symbol-name val))
(when (= (length val) 1)
(setq val (string-to-char val))))
(format "%S: %s$" var
(org-babel-maxima-elisp-to-maxima val))))
(defun org-babel-maxima-graphical-output-file (params)
"Name of file to which maxima should send graphical output."
(and (member "graphics" (cdr (assq :result-params params)))
(cdr (assq :file params))))
(defun org-babel-maxima-elisp-to-maxima (val)
"Return a string of maxima code which evaluates to VAL."
(if (listp val)
(concat "[" (mapconcat #'org-babel-maxima-elisp-to-maxima val ", ") "]")
(format "%s" val)))
(provide 'ob-maxima)
;;; ob-maxima.el ends here