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151 lines
5.1 KiB
EmacsLisp
151 lines
5.1 KiB
EmacsLisp
;;; ob-asymptote.el --- org-babel functions for asymptote evaluation
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;; Copyright (C) 2009-2012 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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;; 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 asymptote 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 asymptote
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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, if file
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;; is omitted then the -V option is passed to the asy command for
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;; interactive viewing
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;;; Requirements:
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;; - The asymptote program :: http://asymptote.sourceforge.net/
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;;
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;; - asy-mode :: Major mode for editing asymptote files
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;;; Code:
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(require 'ob)
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(eval-when-compile (require 'cl))
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(declare-function orgtbl-to-generic "org-table" (table params))
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(declare-function org-combine-plists "org" (&rest plists))
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("asymptote" . "asy"))
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(defvar org-babel-default-header-args:asymptote
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'((:results . "file") (:exports . "results"))
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"Default arguments when evaluating an Asymptote source block.")
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(defun org-babel-execute:asymptote (body params)
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"Execute a block of Asymptote code.
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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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(format (or (and out-file
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(string-match ".+\\.\\(.+\\)" out-file)
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(match-string 1 out-file))
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"pdf"))
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(cmdline (cdr (assoc :cmdline params)))
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(in-file (org-babel-temp-file "asymptote-"))
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(cmd
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(concat "asy "
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(if out-file
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(concat
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"-globalwrite -f " format
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" -o " (org-babel-process-file-name out-file))
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"-V")
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" " cmdline
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" " (org-babel-process-file-name in-file))))
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(with-temp-file in-file
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(insert (org-babel-expand-body:generic
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body params
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(org-babel-variable-assignments:asymptote params))))
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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:asymptote (session params)
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"Return an error if the :session header argument is set.
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Asymptote does not support sessions"
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(error "Asymptote does not support sessions"))
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(defun org-babel-variable-assignments:asymptote (params)
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"Return list of asymptote statements assigning the block's variables."
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(mapcar #'org-babel-asymptote-var-to-asymptote
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(mapcar #'cdr (org-babel-get-header params :var))))
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(defun org-babel-asymptote-var-to-asymptote (pair)
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"Convert an elisp value into an Asymptote variable.
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The elisp value PAIR is converted into Asymptote code specifying
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a variable of the same value."
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(let ((var (car pair))
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(val (let ((v (cdr pair)))
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(if (symbolp v) (symbol-name v) v))))
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(cond
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((integerp val)
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(format "int %S=%S;" var val))
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((floatp val)
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(format "real %S=%S;" var val))
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((stringp val)
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(format "string %S=\"%s\";" var val))
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((and (listp val) (not (listp (car val))))
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(let* ((type (org-babel-asymptote-define-type val))
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(fmt (if (eq 'string type) "\"%s\"" "%s"))
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(vect (mapconcat (lambda (e) (format fmt e)) val ", ")))
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(format "%s[] %S={%s};" type var vect)))
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((listp val)
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(let* ((type (org-babel-asymptote-define-type val))
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(fmt (if (eq 'string type) "\"%s\"" "%s"))
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(array (mapconcat (lambda (row)
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(concat "{"
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(mapconcat (lambda (e) (format fmt e))
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row ", ")
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"}"))
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val ",")))
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(format "%S[][] %S={%s};" type var array))))))
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(defun org-babel-asymptote-define-type (data)
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"Determine type of DATA.
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DATA is a list. Return type as a symbol.
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The type is `string' if any element in DATA is
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a string. Otherwise, it is either `real', if some elements are
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floats, or `int'."
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(let* ((type 'int)
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find-type ; for byte-compiler
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(find-type
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(function
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(lambda (row)
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(catch 'exit
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(mapc (lambda (el)
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(cond ((listp el) (funcall find-type el))
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((stringp el) (throw 'exit (setq type 'string)))
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((floatp el) (setq type 'real))))
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row))))))
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(funcall find-type data) type))
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(provide 'ob-asymptote)
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;;; ob-asymptote.el ends here
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