mirror of
https://git.savannah.gnu.org/git/emacs/org-mode.git
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7c51afb642
implementation, see rorg.org for more information and examples.
166 lines
5.9 KiB
EmacsLisp
166 lines
5.9 KiB
EmacsLisp
;;; litorgy.el --- literate programing in org-mode
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;; Copyright (C) 2009 Eric Schulte, Dan Davison, Austin F. Frank
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;; Author: Eric Schulte, Dan Davison, Austin F. Frank
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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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;; See rorg.org in this directory for more information
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;;; Code:
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(require 'org)
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(defun litorgy-execute-src-block-maybe ()
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"Detect if this is context for a litorgical src-block and run if
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so then run `litorgy-execute-src-block'."
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(let ((case-fold-search t))
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(if (save-excursion
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(beginning-of-line 1)
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(looking-at litorgy-src-block-regexp))
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(progn (call-interactively 'litorgy-execute-src-block)
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t) ;; to signal that we took action
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nil))) ;; to signal that we did not
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(add-hook 'org-ctrl-c-ctrl-c-hook 'litorgy-execute-src-block-maybe)
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(defcustom litorgy-example-size-cutoff 10
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"Number at lines at which to switch from using the ': '
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org-mode quote sytax to using a '#+BEGIN_EXAMPLE' block"
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:group 'litorgy
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:type 'integer)
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(defvar litorgy-src-block-regexp nil
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"Regexp used to test when inside of a litorgical src-block")
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(defun litorgy-set-interpreters (var value)
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(set-default var value)
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(setq litorgy-src-block-regexp
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(concat "#\\+begin_src \\("
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(mapconcat 'regexp-quote value "\\|")
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"\\)"
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"\\([ \t]+\\([^\n]+\\)\\)?\n" ;; match header arguments
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"\\([^\000]+?\\)#\\+end_src")))
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(defcustom litorgy-interpreters '()
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"Interpreters allows for evaluation tags.
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This is a list of program names (as strings) that can evaluate code and
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insert the output into an Org-mode buffer. Valid choices are
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R Evaluate R code
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emacs-lisp Evaluate Emacs Lisp code and display the result
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sh Pass command to the shell and display the result
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perl The perl interpreter
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python The python interpreter
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ruby The ruby interpreter"
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:group 'litorgy
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:set 'litorgy-set-interpreters
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:type '(set :greedy t
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(const "R")
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(const "emacs-lisp")
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(const "sh")
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(const "perl")
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(const "python")
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(const "ruby")))
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;;; functions
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(defun litorgy-execute-src-block (&optional arg)
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"Execute the current source code block, and dump the results
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into the buffer immediately following the block. Results are
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commented by `litorgy-make-region-example'. With optional prefix
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don't dump results into buffer."
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(interactive "P")
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(let* ((info (litorgy-get-current-src-block-info))
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(lang (first info))
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(body (second info))
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(params (third info))
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(cmd (intern (concat "litorgy-execute:" lang)))
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result)
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(unless (member lang litorgy-interpreters)
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(error "Language is not in `litorgy-interpreters': %s" lang))
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(setq result (funcall cmd body params))
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(unless arg (litorgy-insert-result result))))
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(defun litorgy-eval-subtree (&optional arg)
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"Replace EVAL snippets in the entire subtree."
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(interactive "P")
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(save-excursion
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(org-narrow-to-subtree)
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(goto-char (point-min))
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(while (re-search-forward litorgy-regexp nil t)
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(litorgy-eval-src-block arg))
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(widen)))
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(defun litorgy-get-current-src-block-info ()
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"Return the information of the current source block (the point
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should be on the '#+begin_src' line) as a list of the following
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form. (language body header-arguments-alist)"
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(unless (save-excursion
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(beginning-of-line 1)
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(looking-at litorgy-src-block-regexp))
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(error "not looking at src-block"))
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(let ((lang (litorgy-clean-text-properties (match-string 1)))
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(args (litorgy-clean-text-properties (or (match-string 3) "")))
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(body (litorgy-clean-text-properties (match-string 4))))
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(list lang body
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(mapc (lambda (arg)
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(if (string-match "\\([^ :]+\\):\\([^ :]+\\)" arg)
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(cons (match-string 1 arg) (match-string 2 arg))))
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(split-string args)))))
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(defun litorgy-insert-result (result)
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(save-excursion
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(re-search-forward "^#\\+end_src" nil t) (open-line 1) (forward-char 2)
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(let ((beg (point))
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(end (progn (insert result)
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(point))))
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(message (format "from %S %S" beg end))
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(litorgy-make-region-example beg end))))
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(defun litorgy-make-region-example (beg end)
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"Comment out region using either the '^:' or the BEGIN_EXAMPLE
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syntax based on the size of the region as compared to
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`litorgy-example-size-cutoff'."
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(interactive "*r")
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(let ((size (abs (- (line-number-at-pos end)
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(line-number-at-pos beg)))))
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(if (= size 0)
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(let ((result (buffer-substring beg end)))
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(delete-region beg end)
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(insert (concat ": " result)))
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(if (<= size litorgy-example-size-cutoff)
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(save-excursion
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(goto-char beg)
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(dotimes (n size)
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(move-beginning-of-line 1) (insert ": ") (forward-line 1)))
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(let ((result (buffer-substring beg end)))
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(delete-region beg end)
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(insert (concat "#+BEGIN_EXAMPLE\n" result "#+END_EXAMPLE\n")))))))
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(defun litorgy-clean-text-properties (text)
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"Strip all properties from text return."
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(set-text-properties 0 (length text) nil text) text)
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(provide 'litorgy)
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;;; litorgy.el ends here
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