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-;;; ob-ditaa.el --- Babel Functions for ditaa -*- lexical-binding: t; -*-
-
-;; Copyright (C) 2009-2021 Free Software Foundation, Inc.
-
-;; Author: Eric Schulte
-;; Keywords: literate programming, reproducible research
-;; Homepage: https://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 <https://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; Org-Babel support for evaluating ditaa source code.
-;;
-;; This differs from most standard languages in that
-;;
-;; 1) there is no such thing as a "session" in ditaa
-;;
-;; 2) we are generally only going to return results of type "file"
-;;
-;; 3) we are adding the "file" and "cmdline" header arguments
-;;
-;; 4) there are no variables (at least for now)
-
-;;; Code:
-(require 'ob)
-(require 'org-compat)
-
-(defvar org-babel-default-header-args:ditaa
- '((:results . "file")
- (:exports . "results")
- (:java . "-Dfile.encoding=UTF-8"))
- "Default arguments for evaluating a ditaa source block.")
-
-(defcustom org-ditaa-jar-path (expand-file-name
- "ditaa.jar"
- (file-name-as-directory
- (expand-file-name
- "scripts"
- (file-name-as-directory
- (expand-file-name
- "../contrib"
- (file-name-directory (org-find-library-dir "org")))))))
- "Path to the ditaa jar executable."
- :group 'org-babel
- :type 'string)
-
-(defcustom org-babel-ditaa-java-cmd "java"
- "Java executable to use when evaluating ditaa blocks."
- :group 'org-babel
- :type 'string)
-
-(defcustom org-ditaa-eps-jar-path
- (expand-file-name "DitaaEps.jar" (file-name-directory org-ditaa-jar-path))
- "Path to the DitaaEps.jar executable."
- :group 'org-babel
- :version "24.4"
- :package-version '(Org . "8.0")
- :type 'string)
-
-(defcustom org-ditaa-jar-option "-jar"
- "Option for the ditaa jar file.
-Do not leave leading or trailing spaces in this string."
- :group 'org-babel
- :version "24.1"
- :type 'string)
-
-(defun org-babel-execute:ditaa (body params)
- "Execute a block of Ditaa code with org-babel.
-This function is called by `org-babel-execute-src-block'."
- (let* ((out-file (or (cdr (assq :file params))
- (error
- "ditaa code block requires :file header argument")))
- (cmdline (cdr (assq :cmdline params)))
- (java (cdr (assq :java params)))
- (in-file (org-babel-temp-file "ditaa-"))
- (eps (cdr (assq :eps params)))
- (eps-file (when eps
- (org-babel-process-file-name (concat in-file ".eps"))))
- (pdf-cmd (when (and (or (string= (file-name-extension out-file) "pdf")
- (cdr (assq :pdf params))))
- (concat
- "epstopdf"
- " " eps-file
- " -o=" (org-babel-process-file-name out-file))))
- (cmd (concat org-babel-ditaa-java-cmd
- " " java " " org-ditaa-jar-option " "
- (shell-quote-argument
- (expand-file-name
- (if eps org-ditaa-eps-jar-path org-ditaa-jar-path)))
- " " cmdline
- " " (org-babel-process-file-name in-file)
- " " (if pdf-cmd
- eps-file
- (org-babel-process-file-name out-file)))))
- (unless (file-exists-p org-ditaa-jar-path)
- (error "Could not find ditaa.jar at %s" org-ditaa-jar-path))
- (with-temp-file in-file (insert body))
- (message cmd) (shell-command cmd)
- (when pdf-cmd (message pdf-cmd) (shell-command pdf-cmd))
- nil)) ;; signal that output has already been written to file
-
-(defun org-babel-prep-session:ditaa (_session _params)
- "Return an error because ditaa does not support sessions."
- (error "Ditaa does not support sessions"))
-
-(provide 'ob-ditaa)
-
-;;; ob-ditaa.el ends here