HCoop / bpt / emacs.git / blame
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1 | ;;; ob-ditaa.el --- org-babel functions for ditaa evaluation |
| 2 | ||
| 3ab2c837 | 3 | ;; Copyright (C) 2009, 2010 Free Software Foundation, Inc. |
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4 | |
| 5 | ;; Author: Eric Schulte | |
| 6 | ;; Keywords: literate programming, reproducible research | |
| 7 | ;; Homepage: http://orgmode.org | |
| 3ab2c837 | 8 | ;; Version: 7.7 |
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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 ditaa source code. | |
| 28 | ;; | |
| 29 | ;; This differs from most standard languages in that | |
| 30 | ;; | |
| 31 | ;; 1) there is no such thing as a "session" in ditaa | |
| 32 | ;; | |
| 33 | ;; 2) we are generally only going to return results of type "file" | |
| 34 | ;; | |
| 35 | ;; 3) we are adding the "file" and "cmdline" header arguments | |
| 36 | ;; | |
| 37 | ;; 4) there are no variables (at least for now) | |
| 38 | ||
| 39 | ;;; Code: | |
| 40 | (require 'ob) | |
| 41 | ||
| 42 | (defvar org-babel-default-header-args:ditaa | |
| 3ab2c837 | 43 | '((:results . "file") (:exports . "results") (:java . "-Dfile.encoding=UTF-8")) |
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44 | "Default arguments for evaluating a ditaa source block.") |
| 45 | ||
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46 | (defvar org-ditaa-jar-path) |
| 47 | (defun org-babel-execute:ditaa (body params) | |
| 48 | "Execute a block of Ditaa code with org-babel. | |
| 49 | This function is called by `org-babel-execute-src-block'." | |
| afe98dfa | 50 | (let* ((result-params (split-string (or (cdr (assoc :results params)) ""))) |
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51 | (out-file ((lambda (el) |
| 52 | (or el | |
| 53 | (error | |
| 54 | "ditaa code block requires :file header argument"))) | |
| 55 | (cdr (assoc :file params)))) | |
| afe98dfa | 56 | (cmdline (cdr (assoc :cmdline params))) |
| 3ab2c837 | 57 | (java (cdr (assoc :java params))) |
| afe98dfa | 58 | (in-file (org-babel-temp-file "ditaa-")) |
| 3ab2c837 | 59 | (cmd (concat "java " java " -jar " |
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60 | (shell-quote-argument |
| 61 | (expand-file-name org-ditaa-jar-path)) | |
| 62 | " " cmdline | |
| 63 | " " (org-babel-process-file-name in-file) | |
| 64 | " " (org-babel-process-file-name out-file)))) | |
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65 | (unless (file-exists-p org-ditaa-jar-path) |
| 66 | (error "Could not find ditaa.jar at %s" org-ditaa-jar-path)) | |
| 67 | (with-temp-file in-file (insert body)) | |
| afe98dfa | 68 | (message cmd) (shell-command cmd) |
| 3ab2c837 | 69 | nil)) ;; signal that output has already been written to file |
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70 | |
| 71 | (defun org-babel-prep-session:ditaa (session params) | |
| 72 | "Return an error because ditaa does not support sessions." | |
| 73 | (error "Ditaa does not support sessions")) | |
| 74 | ||
| 75 | (provide 'ob-ditaa) | |
| 76 | ||
| 5b409b39 | 77 | |
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78 | |
| 79 | ;;; ob-ditaa.el ends here |