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org-mode/lisp/babel/langs/ob-sass.el

70 lines
2.6 KiB
EmacsLisp

;;; ob-sass.el --- org-babel functions for the sass css generation language
;; Copyright (C) 2009 Eric Schulte
;; Author: Eric Schulte
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org
;; Version: 0.01
;;; License:
;; This program 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, or (at your option)
;; any later version.
;;
;; This program 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; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; 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.
;;; Requirements:
;; - sass-mode :: http://github.com/nex3/haml/blob/master/extra/sass-mode.el
;;; Code:
(require 'ob)
(require 'sass-mode)
(defun org-babel-expand-body:sass (body params &optional processed-params)
"Expand BODY according to PARAMS, return the expanded body." body)
(defun org-babel-execute:sass (body params)
"Execute a block of Sass code with org-babel. This function is
called by `org-babel-execute-src-block'."
(message "executing Sass source code block")
(let* ((result-params (split-string (or (cdr (assoc :results params)) "")))
(file (cdr (assoc :file params)))
(out-file (or file (make-temp-file "org-babel-sass-out")))
(cmdline (cdr (assoc :cmdline params)))
(in-file (make-temp-file "org-babel-sass-in"))
(cmd (concat "sass " (or cmdline "") in-file " " out-file)))
(with-temp-file in-file
(insert (org-babel-expand-body:sass body params))) (shell-command cmd)
(or file (with-temp-buffer (insert-file-contents out-file) (buffer-string)))))
(defun org-babel-prep-session:sass (session params)
"This function does nothing as sass does not support sessions."
(error "Sass does not support sessions"))
(provide 'ob-sass)
;;; ob-sass.el ends here