contrib/lisp/ob-mathomatic.el

   1 ;;; ob-mathomatic.el --- Org-babel functions for mathomatic evaluation
   2
   3 ;; Copyright (C) 2009-2013  Free Software Foundation, Inc.
   4
   5 ;; Author: Eric S Fraga
   6 ;;      Eric Schulte
   7 ;;  Luis Anaya (Mathomatic)
   8
   9 ;; Keywords: literate programming, reproducible research, mathomatic
  10 ;; Homepage: http://orgmode.org
  11
  12 ;; This file is not part of GNU Emacs.
  13
  14 ;; This program is free software: you can redistribute it and/or modify
  15 ;; it under the terms of the GNU General Public License as published by
  16 ;; the Free Software Foundation, either version 3 of the License, or
  17 ;; (at your option) any later version.
  18
  19 ;; This program is distributed in the hope that it will be useful,
  20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 ;; GNU General Public License for more details.
  23
  24 ;; You should have received a copy of the GNU General Public License
  25 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  26
  27 ;;; Commentary:
  28
  29 ;; Org-Babel support for evaluating mathomatic entries.
  30 ;;
  31 ;; This differs from most standard languages in that
  32 ;;
  33 ;; 1) there is no such thing as a "session" in mathomatic
  34 ;;
  35 ;; 2) we are adding the "cmdline" header argument
  36
  37 ;;; Code:
  38 (require 'ob)
  39
  40 (defvar org-babel-tangle-lang-exts)
  41 (add-to-list 'org-babel-tangle-lang-exts '("mathomatic" . "math"))
  42
  43 (defvar org-babel-default-header-args:mathomatic '())
  44
  45 (defcustom org-babel-mathomatic-command
  46   (if (boundp 'mathomatic-command) mathomatic-command "mathomatic")
  47   "Command used to call mathomatic on the shell."
  48   :group 'org-babel)
  49
  50 (defun org-babel-mathomatic-expand (body params)
  51   "Expand a block of Mathomatic code according to its header arguments."
  52   (let ((vars (mapcar #'cdr (org-babel-get-header params :var))))
  53      (mapconcat 'identity
  54                 (list
  55                  ;; graphic output
  56                  (let ((graphic-file (org-babel-mathomatic-graphical-output-file params)))
  57                    (if graphic-file
  58                        (cond
  59                         ((string-match ".\.eps$" graphic-file)
  60                          (format ;; Need to add command to send to file.
  61                           "set plot set terminal postscript eps\\;set output %S "
  62                           graphic-file))
  63                         ((string-match ".\.ps$" graphic-file)
  64                          (format ;; Need to add command to send to file.
  65                           "set plot set terminal postscript\\;set output %S "
  66                           graphic-file))
  67
  68                         ((string-match ".\.pic$" graphic-file)
  69                          (format ;; Need to add command to send to file.
  70                           "set plot set terminal gpic\\;set output %S "
  71                           graphic-file))
  72                         (t
  73                          (format ;; Need to add command to send to file.
  74                           "set plot set terminal png\\;set output %S "
  75                           graphic-file)))
  76                      ""))
  77                  ;; variables
  78                  (mapconcat 'org-babel-mathomatic-var-to-mathomatic vars "\n")
  79                  ;; body
  80                  body
  81                  "")
  82                 "\n")))
  83
  84 (defun org-babel-execute:mathomatic (body params)
  85   "Execute a block of Mathomatic entries with org-babel.  This function is
  86 called by `org-babel-execute-src-block'."
  87   (message "executing Mathomatic source code block")
  88   (let ((result-params (split-string (or (cdr (assoc :results params)) "")))
  89         (result
  90          (let* ((cmdline (or (cdr (assoc :cmdline params)) ""))
  91                 (in-file (org-babel-temp-file "mathomatic-" ".math"))
  92                 (cmd (format "%s -t -c -q  %s %s"
  93                              org-babel-mathomatic-command in-file cmdline)))
  94            (with-temp-file in-file (insert (org-babel-mathomatic-expand body params)))
  95            (message cmd)
  96            ((lambda (raw) ;; " | grep -v batch | grep -v 'replaced' | sed '/^$/d' "
  97               (mapconcat
  98                #'identity
  99                (delq nil
 100                      (mapcar (lambda (line)
 101                                (unless (or (string-match "batch" line)
 102                                            (string-match "^rat: replaced .*$" line)
 103                                            (= 0 (length line)))
 104                                  line))
 105                              (split-string raw "[\r\n]"))) "\n"))
 106             (org-babel-eval cmd "")))))
 107     (if (org-babel-mathomatic-graphical-output-file params)
 108         nil
 109       (if (or (member "scalar" result-params)
 110               (member "verbatim" result-params)
 111               (member "output" result-params))
 112           result
 113         (let ((tmp-file (org-babel-temp-file "mathomatic-res-")))
 114           (with-temp-file tmp-file (insert result))
 115           (org-babel-import-elisp-from-file tmp-file))))))
 116
 117 (defun org-babel-prep-session:mathomatic (session params)
 118   (error "Mathomatic does not support sessions"))
 119
 120 (defun org-babel-mathomatic-var-to-mathomatic (pair)
 121   "Convert an elisp val into a string of mathomatic code specifying a var
 122 of the same value."
 123   (let ((var (car pair))
 124         (val (cdr pair)))
 125     (when (symbolp val)
 126       (setq val (symbol-name val))
 127       (when (= (length val) 1)
 128         (setq val (string-to-char val))))
 129       (format "%s=%s" var
 130               (org-babel-mathomatic-elisp-to-mathomatic val))))
 131
 132 (defun org-babel-mathomatic-graphical-output-file (params)
 133   "Name of file to which mathomatic should send graphical output."
 134   (and (member "graphics" (cdr (assq :result-params params)))
 135        (cdr (assq :file params))))
 136
 137 (defun org-babel-mathomatic-elisp-to-mathomatic (val)
 138   "Return a string of mathomatic code which evaluates to VAL."
 139   (if (listp val)
 140       (mapconcat #'org-babel-mathomatic-elisp-to-mathomatic val " ")
 141     (format "%s" val)))
 142
 143 (provide 'ob-mathomatic)
 144
 145 ;;; ob-mathomatic.el ends here