contrib/babel/lisp/langs/org-babel-sass.el

   1 ;;; org-babel-sass.el --- org-babel functions for the sass css generation language
   2
   3 ;; Copyright (C) 2009 Eric Schulte
   4
   5 ;; Author: Eric Schulte
   6 ;; Keywords: literate programming, reproducible research
   7 ;; Homepage: http://orgmode.org
   8 ;; Version: 0.01
   9
  10 ;;; License:
  11
  12 ;; This program 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, or (at your option)
  15 ;; any later version.
  16 ;;
  17 ;; This program 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; see the file COPYING.  If not, write to the
  24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  25 ;; Boston, MA 02110-1301, USA.
  26
  27 ;;; Commentary:
  28
  29 ;; For more information on sass see http://sass-lang.com/
  30 ;;
  31 ;; This accepts a 'file' header argument which is the target of the
  32 ;; compiled sass.  The default output type for sass evaluation is
  33 ;; either file (if a 'file' header argument was given) or scalar if no
  34 ;; such header argument was supplied.
  35 ;;
  36 ;; A 'cmdline' header argument can be supplied to pass arguments to
  37 ;; the sass command line.
  38
  39 ;;; Requirements:
  40
  41 ;; - sass-mode :: http://github.com/nex3/haml/blob/master/extra/sass-mode.el
  42
  43 ;;; Code:
  44 (require 'org-babel)
  45 (require 'sass-mode)
  46
  47 (org-babel-add-interpreter "sass")
  48
  49 (add-to-list 'org-babel-tangle-langs '("sass" "sass"))
  50
  51 (defun org-babel-execute:sass (body params)
  52   "Execute a block of Sass code with org-babel.  This function is
  53 called by `org-babel-execute-src-block'."
  54   (message "executing Sass source code block")
  55   (let* ((result-params (split-string (or (cdr (assoc :results params)) "")))
  56          (file (cdr (assoc :file params)))
  57          (out-file (or file (make-temp-file "org-babel-sass-out")))
  58          (cmdline (cdr (assoc :cmdline params)))
  59          (in-file (make-temp-file "org-babel-sass-in"))
  60          (cmd (concat "sass " (or cmdline "") in-file " " out-file)))
  61     (with-temp-file in-file (insert body)) (shell-command cmd)
  62     (or file (with-temp-buffer (insert-file-contents out-file) (buffer-string)))))
  63
  64 (defun org-babel-prep-session:sass (session params)
  65   (error "Sass does not support sessions"))
  66
  67 (provide 'org-babel-sass)
  68 ;;; org-babel-sass.el ends here