109 lines
3.9 KiB
EmacsLisp
109 lines
3.9 KiB
EmacsLisp
;;; org-babel-gnuplot.el --- org-babel functions for gnuplot evaluation
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;; Copyright (C) 2009 Eric Schulte
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; Version: 0.01
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;;; License:
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; Org-Babel support for evaluating gnuplot source code.
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;;
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;; This differs from most standard languages in that
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;;
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;; 1) we are generally only going to return results of type "file"
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;;
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;; 2) we are adding the "file" and "cmdline" header arguments
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;;; Code:
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(require 'org-babel)
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(org-babel-add-interpreter "gnuplot")
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(add-to-list 'org-babel-tangle-langs '("gnuplot" "gnuplot"))
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(defvar org-babel-default-header-args:gnuplot '((:results . "file"))
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"Default arguments to use when evaluating a gnuplot source block.")
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(defvar org-babel-gnuplot-timestamp-fmt nil)
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(defun org-babel-execute:gnuplot (body params)
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"Execute a block of Gnuplot code with org-babel. This function is
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called by `org-babel-execute-src-block'."
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(message "executing Gnuplot source code block")
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(let* ((vars (org-babel-ref-variables params))
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(result-params (split-string (or (cdr (assoc :results params)) "")))
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(out-file (cdr (assoc :file params)))
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(cmdline (cdr (assoc :cmdline params)))
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(in-file (make-temp-file "org-babel-ditaa")))
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;; insert variables into code body
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(mapc
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(lambda (pair)
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(message "resolving %S" pair) ;; debugging
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(setq body
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(replace-regexp-in-string
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(regexp-quote (format "%s" (car pair)))
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(if (listp (cdr pair))
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(org-babel-gnuplot-table-to-data
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(cdr pair) (make-temp-file "org-babel-gnuplot") params)
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(cdr pair)) body)))
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vars)
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(with-temp-buffer ;; evaluate the code body with gnuplot
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(insert (concat body "\n"))
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(gnuplot-mode)
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(gnuplot-send-buffer-to-gnuplot))
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out-file))
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(defun org-babel-prep-session:gnuplot (session params))
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(defun org-babel-gnuplot-quote-timestamp-field (s)
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"Convert field S from timestamp to Unix time and export to gnuplot."
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(format-time-string org-babel-gnuplot-timestamp-fmt (org-time-string-to-time s)))
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(defun org-babel-gnuplot-quote-tsv-field (s)
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"Quote field S for export to gnuplot."
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(unless (stringp s)
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(setq s (format "%s" s)))
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(if (string-match org-table-number-regexp s) s
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(if (string-match org-ts-regexp3 s)
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(org-babel-gnuplot-quote-timestamp-field s)
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(concat "\"" (mapconcat 'identity (split-string s "\"") "\"\"") "\""))))
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(defun org-babel-gnuplot-table-to-data (table data-file params)
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"Export TABLE to DATA-FILE in a format readable by gnuplot.
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Pass PARAMS through to `orgtbl-to-generic' when exporting TABLE."
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(with-temp-file data-file
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(message "table = %S" table)
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(make-local-variable 'org-babel-gnuplot-timestamp-fmt)
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(setq org-babel-gnuplot-timestamp-fmt (or
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(plist-get params :timefmt)
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"%Y-%m-%d-%H:%M:%S"))
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(insert (orgtbl-to-generic
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table
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(org-combine-plists
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'(:sep "\t" :fmt org-babel-gnuplot-quote-tsv-field)
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params))))
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data-file)
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(provide 'org-babel-gnuplot)
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;;; org-babel-gnuplot.el ends here
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