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+;;; ob-mathematica.el --- org-babel functions for Mathematica evaluation
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+
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+;; Copyright (C) 2014 Yi Wang
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+
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+;; Authors: Yi Wang
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+;; Keywords: literate programming, reproducible research
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+;; Homepage: https://github.com/tririver/wy-els/blob/master/ob-mathematica.el
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+;; Distributed under the GNU GPL v2 or later
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+
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+;; Org-Babel support for evaluating Mathematica source code.
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+
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+;;; Code:
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+(require 'ob)
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+(require 'ob-ref)
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+(require 'ob-comint)
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+(require 'ob-eval)
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+;; Optionally require mma.el for font lock, etc
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+(require 'mma nil 'noerror)
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+(add-to-list 'org-src-lang-modes '("mathematica" . "mma"))
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+
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+(defvar org-babel-tangle-lang-exts)
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+(add-to-list 'org-babel-tangle-lang-exts '("mathematica" . "m"))
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+
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+(defvar org-babel-default-header-args:mathematica '())
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+
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+(defvar org-babel-mathematica-command "MathematicaScript -script"
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+ "Name of the command for executing Mathematica code.")
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+
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+(defvar org-babel-mathematica-command-alt "math -noprompt"
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+ "Name of the command for executing Mathematica code.")
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+
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+(defun org-babel-expand-body:mathematica (body params)
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+ "Expand BODY according to PARAMS, return the expanded body."
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+ (let ((vars (mapcar #'cdr (org-babel-get-header params :var))))
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+ (concat
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+ (mapconcat ;; define any variables
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+ (lambda (pair)
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+ (format "%s=%s;"
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+ (car pair)
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+ (org-babel-mathematica-var-to-mathematica (cdr pair))))
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+ vars "\n") "\nPrint[\n" body "\n]\n")))
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+
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+(defun org-babel-execute:mathematica (body params)
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+ "Execute a block of Mathematica code with org-babel. This function is
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+called by `org-babel-execute-src-block'"
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+ (let* ((result-params (cdr (assoc :result-params params)))
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+ (full-body (org-babel-expand-body:mathematica body params))
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+ (tmp-script-file (org-babel-temp-file "mathematica-"))
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+ (cmd org-babel-mathematica-command))
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+ ;; actually execute the source-code block
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+ (with-temp-file tmp-script-file (insert full-body))
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+ ;; (with-temp-file "/tmp/dbg" (insert full-body))
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+ ((lambda (raw)
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+ (if (or (member "code" result-params)
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+ (member "pp" result-params)
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+ (and (member "output" result-params)
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+ (not (member "table" result-params))))
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+ raw
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+ (org-babel-script-escape (org-babel-trim raw))))
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+ (org-babel-eval (concat cmd " " tmp-script-file) ""))))
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+
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+(defun org-babel-prep-session:mathematica (session params)
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+ "This function does nothing so far"
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+ (error "Currently no support for sessions"))
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+
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+(defun org-babel-prep-session:mathematica (session body params)
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+ "This function does nothing so far"
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+ (error "Currently no support for sessions"))
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+
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+(defun org-babel-mathematica-var-to-mathematica (var)
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+ "Convert an elisp value to a Mathematica variable.
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+Convert an elisp value, VAR, into a string of Mathematica source code
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+specifying a variable of the same value."
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+ (if (listp var)
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+ (concat "{" (mapconcat #'org-babel-mathematica-var-to-mathematica var ", ") "}")
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+ (format "%S" var)))
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+
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+(provide 'ob-mathematica)
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+
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Yi Wang