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name: lisp/ob-asymptote.el 	 # note: path name is non-authoritative(*)

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;;; ob-asymptote.el --- org-babel functions for asymptote evaluation

;; Copyright (C) 2009-2013 Free Software Foundation, Inc.

;; Author: Eric Schulte
;; Keywords: literate programming, reproducible research
;; Homepage: http://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 <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Org-Babel support for evaluating asymptote source code.
;;
;; This differs from most standard languages in that
;;
;; 1) there is no such thing as a "session" in asymptote
;;
;; 2) we are generally only going to return results of type "file"
;;
;; 3) we are adding the "file" and "cmdline" header arguments, if file
;;    is omitted then the -V option is passed to the asy command for
;;    interactive viewing

;;; Requirements:

;; - The asymptote program :: http://asymptote.sourceforge.net/
;;
;; - asy-mode :: Major mode for editing asymptote files

;;; Code:
(require 'ob)
(eval-when-compile (require 'cl))

(declare-function orgtbl-to-generic "org-table" (table params))
(declare-function org-combine-plists "org" (&rest plists))

(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("asymptote" . "asy"))

(defvar org-babel-default-header-args-asymptote
  '((:results . "file") (:exports . "results"))
  "Default arguments when evaluating an Asymptote source block.")

(defun org-babel-execute:asymptote (body params)
  "Execute a block of Asymptote code.
This function is called by `org-babel-execute-src-block'."
  (let* ((result-params (split-string (or (cdr (assoc :results params)) "")))
         (out-file (cdr (assoc :file params)))
         (format (or (and out-file
                          (string-match ".+\\.\\(.+\\)" out-file)
                          (match-string 1 out-file))
                     "pdf"))
         (cmdline (cdr (assoc :cmdline params)))
         (in-file (org-babel-temp-file "asymptote-"))
         (cmd
	  (concat "asy "
		  (if out-file
		      (concat
		       "-globalwrite -f " format
		       " -o " (org-babel-process-file-name out-file))
		    "-V")
		  " " cmdline
		  " " (org-babel-process-file-name in-file))))
    (with-temp-file in-file
      (insert (org-babel-expand-body:generic
	       body params
	       (org-babel-variable-assignments:asymptote params))))
    (message cmd) (shell-command cmd)
    nil)) ;; signal that output has already been written to file

(defun org-babel-prep-session:asymptote (session params)
  "Return an error if the :session header argument is set.
Asymptote does not support sessions"
  (error "Asymptote does not support sessions"))

(defun org-babel-variable-assignments:asymptote (params)
  "Return list of asymptote statements assigning the block's variables."
  (mapcar #'org-babel-asymptote-var-to-asymptote
	  (mapcar #'cdr (org-babel-get-header params :var))))

(defun org-babel-asymptote-var-to-asymptote (pair)
  "Convert an elisp value into an Asymptote variable.
The elisp value PAIR is converted into Asymptote code specifying
a variable of the same value."
  (let ((var (car pair))
        (val (let ((v (cdr pair)))
	       (if (symbolp v) (symbol-name v) v))))
    (cond
     ((integerp val)
      (format "int %S=%S;" var val))
     ((floatp val)
      (format "real %S=%S;" var val))
     ((stringp val)
      (format "string %S=\"%s\";" var val))
     ((and (listp val) (not (listp (car val))))
      (let* ((type (org-babel-asymptote-define-type val))
	     (fmt (if (eq 'string type) "\"%s\"" "%s"))
	     (vect (mapconcat (lambda (e) (format fmt e)) val ", ")))
	(format "%s[] %S={%s};" type var vect)))
     ((listp val)
      (let* ((type (org-babel-asymptote-define-type val))
	     (fmt (if (eq 'string type) "\"%s\"" "%s"))
             (array (mapconcat (lambda (row)
				 (concat "{"
					 (mapconcat (lambda (e) (format fmt e))
						    row ", ")
					 "}"))
			       val ",")))
        (format "%S[][] %S={%s};" type var array))))))

(defun org-babel-asymptote-define-type (data)
  "Determine type of DATA.

DATA is a list.  Return type as a symbol.

The type is `string' if any element in DATA is
a string.  Otherwise, it is either `real', if some elements are
floats, or `int'."
  (let* ((type 'int)
	 find-type			; for byte-compiler
	 (find-type
	  (function
	   (lambda (row)
	     (catch 'exit
	       (mapc (lambda (el)
		       (cond ((listp el) (funcall find-type el))
			     ((stringp el) (throw 'exit (setq type 'string)))
			     ((floatp el) (setq type 'real))))
		     row))))))
    (funcall find-type data) type))

(provide 'ob-asymptote)



;;; ob-asymptote.el ends here

debug log:

solving 1cb5625 ...
found 1cb5625 in https://list.orgmode.org/orgmode/87k3orl3l6.fsf_-_@med.uni-goettingen.de/
found 4ea68df in https://git.savannah.gnu.org/cgit/emacs/org-mode.git
preparing index
index prepared:
100644 4ea68df9a957e035e30f2be3b1242f5365be810b	lisp/ob-asymptote.el

applying [1/1] https://list.orgmode.org/orgmode/87k3orl3l6.fsf_-_@med.uni-goettingen.de/
diff --git a/lisp/ob-asymptote.el b/lisp/ob-asymptote.el
index 4ea68df..1cb5625 100644

Checking patch lisp/ob-asymptote.el...
Applied patch lisp/ob-asymptote.el cleanly.

index at:
100644 1cb5625995fbdec57f2a0c5f9463ddb84d9655c4	lisp/ob-asymptote.el

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