99 lines
3.7 KiB
EmacsLisp
99 lines
3.7 KiB
EmacsLisp
;;; ob-eukleides.el --- Org-babel functions for eukleides evaluation
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;; Copyright (C) 2010-2021 Free Software Foundation, Inc.
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;; Author: Luis Anaya
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;; Keywords: literate programming, reproducible research
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;; Homepage: https://orgmode.org
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;; This file is not part of GNU Emacs.
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;; This program 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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;; This program 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 <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating eukleides script.
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;;
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;; Inspired by Ian Yang's org-export-blocks-format-eukleides
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;; https://www.emacswiki.org/emacs/org-export-blocks-format-eukleides.el
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;;; Requirements:
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;; eukleides | http://eukleides.org
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;; eukleides | `org-eukleides-path' should point to the eukleides executablexs
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;;; Code:
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(require 'ob)
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(require 'ob-eval)
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(defvar org-babel-default-header-args:eukleides
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'((:results . "file") (:exports . "results"))
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"Default arguments for evaluating a eukleides source block.")
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(defcustom org-eukleides-path nil
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"Path to the eukleides executable file."
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:group 'org-babel
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:type 'string)
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(defcustom org-eukleides-eps-to-raster nil
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"Command used to convert EPS to raster. Nil for no conversion."
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:group 'org-babel
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:type '(choice
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(repeat :tag "Shell Command Sequence" (string :tag "Shell Command"))
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(const :tag "sam2p" "a=%s;b=%s;sam2p ${a} ${b}" )
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(const :tag "NetPNM" "a=%s;b=%s;pstopnm -stdout ${a} | pnmtopng > ${b}" )
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(const :tag "None" nil)))
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(defun org-babel-execute:eukleides (body params)
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"Execute a block of eukleides 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 (assq :results params)) "")))
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(out-file (or (cdr (assq :file params))
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(error "Eukleides requires a \":file\" header argument")))
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(cmdline (cdr (assq :cmdline params)))
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(in-file (org-babel-temp-file "eukleides-"))
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(java (or (cdr (assq :java params)) ""))
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(cmd (if (not org-eukleides-path)
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(error "`org-eukleides-path' is not set")
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(concat (expand-file-name org-eukleides-path)
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" -b --output="
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(org-babel-process-file-name
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(concat
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(file-name-sans-extension out-file) ".eps"))
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" "
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(org-babel-process-file-name in-file)))))
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(unless (file-exists-p org-eukleides-path)
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(error "Could not find eukleides at %s" org-eukleides-path))
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(if (string= (file-name-extension out-file) "png")
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(if org-eukleides-eps-to-raster
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(shell-command (format org-eukleides-eps-to-raster
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(concat (file-name-sans-extension out-file) ".eps")
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(concat (file-name-sans-extension out-file) ".png")))
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(error "Conversion to PNG not supported. Use a file with an EPS name")))
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(with-temp-file in-file (insert body))
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(message "%s" cmd) (org-babel-eval cmd "")
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nil)) ;; signal that output has already been written to file
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(defun org-babel-prep-session:eukleides (session params)
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"Return an error because eukleides does not support sessions."
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(error "Eukleides does not support sessions"))
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(provide 'ob-eukleides)
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;;; ob-eukleides.el ends here
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