84 lines
3.0 KiB
EmacsLisp
84 lines
3.0 KiB
EmacsLisp
;;; litorgy-shell.el --- litorgy functions for shell 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 sh, bash, and zsh shells
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;;; Code:
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(require 'litorgy)
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(defun litorgy-shell-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 " shell 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-shell-execute'.")
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(litorgy-shell-execute ,cmd body params))))
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cmds))
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(defcustom litorgy-shell-interpreters '("sh" "bash" "zsh")
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"List of interpreters of shelling languages which can be
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executed through litorgy."
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:group 'litorgy
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:set 'litorgy-shell-add-interpreter)
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(defun litorgy-shell-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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(if (> (length vars) 0)
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(error "currently no support for passing variables to shells"))
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(insert body)
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(shell-command-on-region (point-min) (point-max) cmd nil 'replace)
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(litorgy-shell-to-elisp (buffer-string))))))
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(defun litorgy-shell-to-elisp (result)
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(let ((tmp-file (make-temp-file "litorgy-shell")))
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(with-temp-file tmp-file
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(insert result))
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(with-temp-buffer
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(org-table-import tmp-file nil)
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(delete-file tmp-file)
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(setq result (mapcar (lambda (row)
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(mapcar #'litorgy-read row))
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(org-table-to-lisp)))
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(if (null (cdr result)) ;; if result is trivial vector, then scalarize it
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(if (consp (car result))
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(if (null (cdr (car result)))
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(caar result)
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result)
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(car result))
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result))))
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(provide 'litorgy-shell)
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;;; litorgy-shell.el ends here
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