225 lines
8.6 KiB
EmacsLisp
225 lines
8.6 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 if so
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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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(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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(defun litorgy-add-interpreter (interpreter)
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"Add INTERPRETER to `litorgy-interpreters' and update
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`litorgy-src-block-regexp' appropriately."
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(unless (member interpreter litorgy-interpreters)
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(setq litorgy-interpreters (cons interpreter litorgy-interpreters))
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(litorgy-set-interpreters 'litorgy-interpreters litorgy-interpreters)))
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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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The source block regexp `litorgy-src-block-regexp' is updated
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when a new interpreter is added to this list through the
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customize interface. To add interpreters to this variable from
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lisp code use the `litorgy-add-interpreter' function."
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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 `org-toggle-fixed-width-section'. With optional
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prefix don't dump results into buffer but rather return the
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results in raw elisp (this is useful for automated execution of a
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source block)."
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(interactive "P")
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(let* ((info (litorgy-get-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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(if arg
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result
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(litorgy-insert-result result (cdr (assoc :results params))))))
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(defun litorgy-eval-buffer (&optional arg)
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"Replace EVAL snippets in the entire buffer."
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(interactive "P")
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(save-excursion
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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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(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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(litorgy-eval-buffer)
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(widen)))
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(defun litorgy-get-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 (litorgy-parse-header-arguments args))))
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(defun litorgy-parse-header-arguments (arg-string)
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"Parse a string of header arguments returning an alist."
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(delq nil
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(mapcar
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(lambda (arg) (if (string-match "\\([^ \f\t\n\r\v]+\\)[ \f\t\n\r\v]*\\([^ \f\t\n\r\v]*\\)" arg)
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(cons (intern (concat ":" (match-string 1 arg))) (match-string 2 arg))))
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(split-string (concat " " arg-string) "[ \f\t\n\r\v]+:"))))
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(defun litorgy-insert-result (result &optional insert)
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"Insert RESULT into the current buffer after the end of the
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current source block. With optional argument INSERT controls
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insertion of results in the org-mode file. INSERT can take the
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following values...
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t ------ the default options, simply insert the results after the
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source block
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replace - insert results after the source block replacing any
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previously inserted results
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silent -- no results are inserted"
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(if (stringp result)
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(setq result (litorgy-clean-text-properties result))
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(unless (listp result) (setq result (format "%S" result))))
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(if (string-equal insert "replace") (litorgy-remove-result (listp result)))
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(if (= (length result) 0)
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(message "no result returned by source block")
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(unless (string-equal insert "silent")
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(when (and (stringp result)
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(not (or (string-equal (substring result -1) "\n")
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(string-equal (substring result -1) "\r"))))
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(setq result (concat result "\n")))
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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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(if (stringp result) ;; assume the result is a table if it's not a string
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(litorgy-examplize-region (point) (progn (insert result) (point)))
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(progn
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(insert
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(concat (orgtbl-to-orgtbl
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(if (consp (car result)) result (list result))
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'(:fmt (lambda (cell) (format "%S" cell)))) "\n"))
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(forward-line -1)
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(org-cycle)))))))
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(defun litorgy-remove-result (&optional table)
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"Remove the result following the current source block. If
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optional argument TABLE is supplied then remove the table
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following the block rather than the fixed width example."
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(save-excursion
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(re-search-forward "^#\\+end_src" nil t)
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(forward-char 1)
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(delete-region (point)
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(save-excursion (forward-line 1)
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(if table
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(org-table-end)
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(while (if (looking-at ": ")
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(progn (while (looking-at ": ")
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(forward-line 1)) t))
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(forward-line 1))
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(forward-line -1)
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(point))))))
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(defun litorgy-examplize-region (beg end)
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"Comment out region using the ': ' org example quote."
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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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(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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(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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