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105 lines
3.9 KiB
EmacsLisp
105 lines
3.9 KiB
EmacsLisp
;;; litorgy-script.el --- litorgy functions for script execution
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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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;; Litorgy support for evaluating ruby, and python source code.
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;;; Code:
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(require 'litorgy)
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(defun litorgy-script-add-interpreter (var cmds)
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(set-default var cmds)
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(mapc (lambda (cmd)
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(setq litorgy-interpreters (cons cmd litorgy-interpreters))
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(eval
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`(defun ,(intern (concat "litorgy-execute:" cmd)) (body params)
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,(concat "Evaluate a block of " cmd " script with litorgy. This function is
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called by `litorgy-execute-src-block'. This function is an
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automatically generated wrapper for `litorgy-script-execute'.")
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(litorgy-script-execute ,cmd body params))))
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cmds))
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(defcustom litorgy-script-interpreters '("ruby" "python")
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"List of interpreters of scripting languages which can be
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executed through litorgy."
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:group 'litorgy
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:set 'litorgy-script-add-interpreter)
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(defun litorgy-script-execute (cmd body params)
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"Run CMD on BODY obeying any options set with PARAMS."
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(message (format "executing %s code block..." cmd))
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(let ((vars (litorgy-reference-variables params)))
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(save-window-excursion
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(with-temp-buffer
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(when (string= "ruby" cmd) (insert "def main\n"))
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;; define any variables
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(mapcar
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(lambda (pair)
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(insert (format "%s=%s\n"
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(car pair)
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(litorgy-script-table-to-ruby/python (cdr pair)))))
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vars)
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(case (intern cmd)
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('ruby
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(insert body)
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(insert "\nend\n\nputs main.inspect\n"))
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('python
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(insert "def main():\n")
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(let ((body-lines (split-string body "[\n\r]+" t)))
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(mapc
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(lambda (line)
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(insert (format "\t%s\n" line)))
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(butlast body-lines))
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(insert (format "\treturn %s\n" (car (last body-lines)))))
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(insert "\nprint main()\n")))
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(shell-command-on-region (point-min) (point-max) cmd nil 'replace)
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(litorgy-script-table-or-results (buffer-string))))))
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(defun litorgy-script-table-to-ruby/python (table)
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"Convert an elisp table (nested lists) into a string of ruby
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source code specifying a table (nested arrays)."
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(if (listp table)
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(concat "[" (mapconcat #'litorgy-script-table-to-ruby/python table ", ") "]")
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(format "%S" table)))
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(defun litorgy-script-table-or-results (results)
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"If the results look like a table, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(when (string-match "^\\[.+\\]$" results)
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(setq results
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;; somewhat hacky, but thanks to similarities between
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;; languages it seems to work
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(read (replace-regexp-in-string
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"\\[" "(" (replace-regexp-in-string
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"\\]" ")" (replace-regexp-in-string
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", " " " (replace-regexp-in-string
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"'" "\"" results)))))))
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results)
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(provide 'litorgy-script)
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;;; litorgy-script.el ends here
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