forked from mirrors/org-mode
120 lines
4.1 KiB
EmacsLisp
120 lines
4.1 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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(defvar litorgy-script-ruby-wrapper-method
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"
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def main
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%s
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end
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puts main().inspect
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")
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(defvar litorgy-script-python-wrapper-method
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"
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def main():
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%s
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print main()")
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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-ref-variables params)))
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(save-window-excursion
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(with-temp-buffer
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(insert
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(format
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(case (intern cmd)
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('ruby litorgy-script-ruby-wrapper-method)
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('python litorgy-script-python-wrapper-method))
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(concat
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(mapconcat ;; define any variables
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(lambda (pair)
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(format "\t%s=%s"
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(car pair)
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(litorgy-script-var-to-ruby/python (cdr pair))))
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vars "\n")
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"\n"
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(let ((body-lines (split-string body "[\n\r]+" t)))
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(mapconcat
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(lambda (line)
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(format "\t%s\n" line))
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(butlast body-lines) "\n")
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(format "\treturn %s\n" (car (last body-lines)))))))
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;; (message (buffer-substring (point-min) (point-max))) ;; debug script
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(shell-command-on-region (point-min) (point-max) cmd nil 'replace)
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;; (message (buffer-string)) ;; debug results
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(litorgy-script-table-or-results (buffer-string))))))
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(defun litorgy-script-var-to-ruby/python (var)
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"Convert an elisp var into a string of ruby or python source
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code specifying a var of the same value."
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(if (listp var)
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(concat "[" (mapconcat #'litorgy-script-var-to-ruby/python var ", ") "]")
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(format "%S" var)))
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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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(litorgy-read
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(if (string-match "^\\[.+\\]$" results)
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;; somewhat hacky, but thanks to similarities between languages
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;; it seems to work
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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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", " " " (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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