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+;;; ob-sass.el --- org-babel functions for the sass css generation language
+;; Copyright (C) 2009-2012 Free Software Foundation, Inc.
+;; Author: Eric Schulte
+;; Keywords: literate programming, reproducible research
+;; Homepage: http://orgmode.org
+;; This file is part of GNU Emacs.
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
+;; For more information on sass see http://sass-lang.com/
+;; This accepts a 'file' header argument which is the target of the
+;; compiled sass. The default output type for sass evaluation is
+;; either file (if a 'file' header argument was given) or scalar if no
+;; such header argument was supplied.
+;; A 'cmdline' header argument can be supplied to pass arguments to
+;; the sass command line.
+;; - sass-mode :: http://github.com/nex3/haml/blob/master/extra/sass-mode.el
+(defvar org-babel-default-header-args:sass '())
+(defun org-babel-execute:sass (body params)
+ "Execute a block of Sass code with Babel.
+This function is called by `org-babel-execute-src-block'."
+ (let* ((result-params (split-string (or (cdr (assoc :results params)) "")))
+ (file (cdr (assoc :file params)))
+ (out-file (or file (org-babel-temp-file "sass-out-")))
+ (cmdline (cdr (assoc :cmdline params)))
+ (in-file (org-babel-temp-file "sass-in-"))
+ (cmd (concat "sass " (or cmdline "")
+ " " (org-babel-process-file-name in-file)
+ " " (org-babel-process-file-name out-file))))
+ (with-temp-file in-file
+ (insert (org-babel-expand-body:generic body params)))
+ (org-babel-eval cmd "")
+ (if file
+ nil ;; signal that output has already been written to file
+ (with-temp-buffer (insert-file-contents out-file) (buffer-string)))))
+(defun org-babel-prep-session:sass (session params)
+ "Raise an error because sass does not support sessions."
+ (error "Sass does not support sessions"))
+;;; ob-sass.el ends here