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;;; ob-spice.el --- Babel Functions for spice
;;; -*- coding: utf-8 -*-
;; License: GPL v3, or any later version
;;
;; This file 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, or (at your option)
;; any later version.
;;
;; This file 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Org-Babel support for evaluating spice.
;;; Requirements:
;; - ngspice :: http://ngspice.sourceforge.net/
;;; Code:
(require 'ob)
;; (lambda (text) (setq body (concat text "\n" body)))
(defun ob-spice-vector-search (body vars)
"Replace first instance in BODY for all VARS."
(mapc (lambda (pair)
(if (string-match (format
"\\$%s\\[\\([0-9]\\)\\]"
(car pair))
body)
(let ((replacement (nth
(string-to-number (match-string 1 body))
(cadr pair))))
(setq body(format "%s%s%s"
(substring body 0 (match-beginning
0))
replacement
(substring body (match-end 0)))))))
vars)
body
)
(defun org-babel-expand-body:spice (body params)
"Expand BODY according to PARAMS, return the expanded body."
(let ((vars (org-babel--get-vars params))
(prologue (cdr (assq :prologue params)))
(epilogue (cdr (assq :epilogue params)))
(file (cdr (assq :file params)))
(old-body ""))
;; replace vector variables preceded by '$' and followed by the
;; index in square brackets starting at 0. Matches without
;; preceding or succeeding spaces.
(while (not (string= old-body body))
(setq old-body body)
(setq body (ob-spice-vector-search body vars))
)
;; replace any variable names preceded by '$' with the actual
;; value of the variable. Matches only with succeeding space or
;; end of line to prevent namespace limitations.
(mapc (lambda (pair)
(setq body (replace-regexp-in-string
(format "\\$%s\\( \\)\\|\\$%s$" (car pair)
(car pair))
(format "%s\1" (cdr pair))
body)))
vars)
;; TODO :file stuff ....
(when prologue (setq body (concat prologue "\n" body)))
(when epilogue (setq body (concat body "\n" epilogue)))
body))
(defun org-babel-execute:spice (body params)
"Execute a block of Spice code with Babel.
This function is called by `org-babel-execute-src-block'."
(let ((body (org-babel-expand-body:spice body params))
(gnuplot (cdr (assq :gnuplot params))))
;; TODO deal with temporary files
(org-babel-eval "ngspice -b " body)
;; TODO read outputs from files
;; TODO gnuplot options
(if (string= "yes" gnuplot)
nil ;return content(!) of gnuplot.plt for :post processing or
;nowebbing spice into gnuplot
nil ;return normal spice output
)
))
(provide 'ob-spice)
;;; ob-spice.el ends here
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