lisp/org/ob-plantuml.el

   1 ;;; ob-plantuml.el --- org-babel functions for plantuml evaluation
   2
   3 ;; Copyright (C) 2010-2011  Free Software Foundation, Inc.
   4
   5 ;; Author: Zhang Weize
   6 ;; Keywords: literate programming, reproducible research
   7 ;; Homepage: http://orgmode.org
   8 ;; Version: 7.4
   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 plantuml script.
  28 ;;
  29 ;; Inspired by Ian Yang's org-export-blocks-format-plantuml
  30 ;; http://www.emacswiki.org/emacs/org-export-blocks-format-plantuml.el
  31
  32 ;;; Requirements:
  33
  34 ;; plantuml     | http://plantuml.sourceforge.net/
  35 ;; plantuml.jar | `org-plantuml-jar-path' should point to the jar file
  36
  37 ;;; Code:
  38 (require 'ob)
  39 (require 'ob-eval)
  40
  41 (defvar org-babel-default-header-args:plantuml
  42   '((:results . "file") (:exports . "results"))
  43   "Default arguments for evaluating a plantuml source block.")
  44
  45 (defcustom org-plantuml-jar-path nil
  46   "Path to the plantuml.jar file."
  47   :group 'org-babel
  48   :type 'string)
  49
  50 (defun org-babel-execute:plantuml (body params)
  51   "Execute a block of plantuml code with org-babel.
  52 This function is called by `org-babel-execute-src-block'."
  53   (let* ((result-params (split-string (or (cdr (assoc :results params)) "")))
  54          (out-file (or (cdr (assoc :file params))
  55                        (error "plantuml requires a \":file\" header argument")))
  56          (cmdline (cdr (assoc :cmdline params)))
  57          (in-file (org-babel-temp-file "plantuml-"))
  58          (cmd (if (not org-plantuml-jar-path)
  59                   (error "`org-plantuml-jar-path' is not set")
  60                 (concat "java -jar "
  61                         (shell-quote-argument
  62                          (expand-file-name org-plantuml-jar-path))
  63                         (if (string= (file-name-extension out-file) "svg")
  64                             " -tsvg" "")
  65                         " -p " cmdline " < "
  66                         (org-babel-process-file-name in-file)
  67                         " > "
  68                         (org-babel-process-file-name out-file)))))
  69     (unless (file-exists-p org-plantuml-jar-path)
  70       (error "Could not find plantuml.jar at %s" org-plantuml-jar-path))
  71     (with-temp-file in-file (insert (concat "@startuml\n" body "\n@enduml")))
  72     (message "%s" cmd) (org-babel-eval cmd "")
  73     out-file))
  74
  75 (defun org-babel-prep-session:plantuml (session params)
  76   "Return an error because plantuml does not support sessions."
  77   (error "Plantuml does not support sessions"))
  78
  79 (provide 'ob-plantuml)
  80
  81
  82 ;;; ob-plantuml.el ends here