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These languages are capable of writing results to file; for several of them this is their only mode of operation. These changes cause the languages to return to ob.el either the computed result, or nil, when they have written results to file themselves. This is in place of the previous method of returning the output file name as a string to ob.el. * lisp/ob-asymptote.el (org-babel-execute:asymptote): Return nil to signal that the intended content has been written to file. * lisp/ob-ditaa.el (org-babel-execute:ditaa): Return nil to signal that the intended content has been written to file. * lisp/ob-dot.el (org-babel-execute:dot): Return nil to signal that the intended content has been written to file. * lisp/ob-gnuplot.el (org-babel-execute:gnuplot): Return nil to signal that the intended content has been written to file. * lisp/ob-latex.el (org-babel-execute:latex): Return nil to signal that the intended content has been written to file. * lisp/ob-mscgen.el (org-babel-execute:mscgen): Return nil to signal that the intended content has been written to file. * lisp/ob-octave.el (org-babel-execute:octave): Return result; not name of output file. * lisp/ob-plantuml.el (org-babel-execute:plantuml): Return nil to signal that the intended content has been written to file. * lisp/ob-python.el (org-babel-execute:python): Return result; not name of output file. * lisp/ob-ruby.el (org-babel-execute:ruby): Return result; not name of output file. * lisp/ob-sass.el (org-babel-execute:sass): Return nil if result has been written to file
75 lines
2.5 KiB
EmacsLisp
75 lines
2.5 KiB
EmacsLisp
;;; ob-ditaa.el --- org-babel functions for ditaa evaluation
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;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; Version: 7.4
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating ditaa source code.
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;;
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;; This differs from most standard languages in that
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;;
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;; 1) there is no such thing as a "session" in ditaa
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;;
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;; 2) we are generally only going to return results of type "file"
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;;
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;; 3) we are adding the "file" and "cmdline" header arguments
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;;
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;; 4) there are no variables (at least for now)
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;;; Code:
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(require 'ob)
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(defvar org-babel-default-header-args:ditaa
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'((:results . "file") (:exports . "results"))
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"Default arguments for evaluating a ditaa source block.")
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(defvar org-ditaa-jar-path)
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(defun org-babel-execute:ditaa (body params)
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"Execute a block of Ditaa code with org-babel.
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This function is called by `org-babel-execute-src-block'."
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(let* ((result-params (split-string (or (cdr (assoc :results params)) "")))
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(out-file (cdr (assoc :file params)))
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(cmdline (cdr (assoc :cmdline params)))
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(in-file (org-babel-temp-file "ditaa-"))
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(cmd (concat "java -jar "
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(shell-quote-argument
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(expand-file-name org-ditaa-jar-path))
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" " cmdline
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" " (org-babel-process-file-name in-file)
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" " (org-babel-process-file-name out-file))))
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(unless (file-exists-p org-ditaa-jar-path)
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(error "Could not find ditaa.jar at %s" org-ditaa-jar-path))
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(with-temp-file in-file (insert body))
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(message cmd) (shell-command cmd)
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nil)) ;; signal that output has already been written to file
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(defun org-babel-prep-session:ditaa (session params)
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"Return an error because ditaa does not support sessions."
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(error "Ditaa does not support sessions"))
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(provide 'ob-ditaa)
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;; arch-tag: 492cd006-07d9-4fac-bef6-5bb60b48842e
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;;; ob-ditaa.el ends here
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