lisp/ob-emacs-lisp.el

   1 ;;; ob-emacs-lisp.el --- org-babel functions for emacs-lisp code evaluation
   2
   3 ;; Copyright (C) 2009, 2010  Free Software Foundation, Inc
   4
   5 ;; Author: Eric Schulte
   6 ;; Keywords: literate programming, reproducible research
   7 ;; Homepage: http://orgmode.org
   8 ;; Version: 7.5
   9
  10 ;; This file is part of GNU Emacs.
  11
  12 ;; GNU Emacs is free software: you can redistribute it and/or modify
  13 ;; it under the terms of the GNU General Public License as published by
  14 ;; the Free Software Foundation, either version 3 of the License, or
  15 ;; (at your option) any later version.
  16
  17 ;; GNU Emacs is distributed in the hope that it will be useful,
  18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;; GNU General Public License for more details.
  21
  22 ;; You should have received a copy of the GNU General Public License
  23 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 ;;; Commentary:
  26
  27 ;; Org-Babel support for evaluating emacs-lisp code
  28
  29 ;;; Code:
  30 (require 'ob)
  31 (eval-when-compile (require 'ob-comint))
  32
  33 (defvar org-babel-default-header-args:emacs-lisp
  34   '((:hlines . "yes") (:colnames . "no"))
  35   "Default arguments for evaluating an emacs-lisp source block.")
  36
  37 (declare-function orgtbl-to-generic "org-table" (table params))
  38
  39 (defun org-babel-expand-body:emacs-lisp (body params)
  40   "Expand BODY according to PARAMS, return the expanded body."
  41   (let* ((vars (mapcar #'cdr (org-babel-get-header params :var)))
  42          (result-params (cdr (assoc :result-params params)))
  43          (print-level nil) (print-length nil)
  44          (body (if (> (length vars) 0)
  45                    (concat "(let ("
  46                          (mapconcat
  47                           (lambda (var)
  48                             (format "%S" (print `(,(car var) ',(cdr var)))))
  49                           vars "\n      ")
  50                          ")\n" body ")")
  51                  body)))
  52     (if (or (member "code" result-params)
  53             (member "pp" result-params))
  54         (concat "(pp " body ")") body)))
  55
  56 (defun org-babel-execute:emacs-lisp (body params)
  57   "Execute a block of emacs-lisp code with Babel."
  58   (save-window-excursion
  59     (org-babel-reassemble-table
  60      (eval (read (format (if (member "output"
  61                                      (cdr (assoc :result-params params)))
  62                              "(with-output-to-string %s)"
  63                            "(progn %s)")
  64                          (org-babel-expand-body:emacs-lisp body params))))
  65      (org-babel-pick-name (cdr (assoc :colname-names params))
  66                           (cdr (assoc :colnames params)))
  67        (org-babel-pick-name (cdr (assoc :rowname-names params))
  68                             (cdr (assoc :rownames params))))))
  69
  70 (provide 'ob-emacs-lisp)
  71
  72 ;; arch-tag: e9a3acca-dc84-472a-9f5a-23c35befbcd6
  73
  74 ;;; ob-emacs-lisp.el ends here