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;;; ob-tcl.el --- Org-babel functions for tcl evaluation
;; Copyright (C) 2009-2014 Free Software Foundation, Inc.
;; Authors: Dan Davison
;; Eric Schulte
;; Luis Anaya (tcl)
;;
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org
;; This file is not part of GNU Emacs.
;; This program 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.
;; This program 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 tcl source code.
;;; Code:
(require 'ob)
(require 'ob-eval)
(eval-when-compile (require 'cl))
(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("tcl" . "tcl"))
(defvar org-babel-default-header-args:tcl nil)
(defcustom org-babel-tcl-command "tclsh"
"Name of command to use for executing Tcl code."
:group 'org-babel
:type 'string)
(defun org-babel-execute:tcl (body params)
"Execute a block of Tcl code with Babel.
This function is called by `org-babel-execute-src-block'."
(let* ((session (cdr (assoc :session params)))
(result-params (cdr (assoc :result-params params)))
(result-type (cdr (assoc :result-type params)))
(full-body (org-babel-expand-body:generic
body params (org-babel-variable-assignments:tcl params)))
(session (org-babel-tcl-initiate-session session)))
(org-babel-reassemble-table
(org-babel-tcl-evaluate session full-body result-type)
(org-babel-pick-name
(cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
(org-babel-pick-name
(cdr (assoc :rowname-names params)) (cdr (assoc :rownames params))))))
(defun org-babel-prep-session:tcl (session params)
"Prepare SESSION according to the header arguments in PARAMS."
(error "Sessions are not supported for Tcl"))
(defun org-babel-variable-assignments:tcl (params)
"Return list of tcl statements assigning the block's variables."
(mapcar
(lambda (pair)
(format "set %s %s"
(car pair)
(org-babel-tcl-var-to-tcl (cdr pair))))
(mapcar #'cdr (org-babel-get-header params :var))))
;; helper functions
(defun org-babel-tcl-var-to-tcl (var)
"Convert an elisp value to a tcl variable.
The elisp value, VAR, is converted to a string of tcl source code
specifying a var of the same value."
(if (listp var)
(concat "{" (mapconcat #'org-babel-tcl-var-to-tcl var " ") "}")
(format "%s" var)))
(defvar org-babel-tcl-buffers '(:default . nil))
(defun org-babel-tcl-initiate-session (&optional session params)
"Return nil because sessions are not supported by tcl."
nil)
(defvar org-babel-tcl-wrapper-method
"
proc main {} {
%s
}
set r [eval main]
set o [open \"%s\" \"w\"];
puts $o $r
flush $o
close $o
")
(defvar org-babel-tcl-pp-wrapper-method
nil)
(defun org-babel-tcl-evaluate (session body &optional result-type)
"Pass BODY to the Tcl process in SESSION.
If RESULT-TYPE equals 'output then return a list of the outputs
of the statements in BODY, if RESULT-TYPE equals 'value then
return the value of the last statement in BODY, as elisp."
(when session (error "Sessions are not supported for Tcl"))
(case result-type
(output (org-babel-eval org-babel-tcl-command body))
(value (let ((tmp-file (org-babel-temp-file "tcl-")))
(org-babel-eval
org-babel-tcl-command
(format org-babel-tcl-wrapper-method body
(org-babel-process-file-name tmp-file 'noquote)))
(org-babel-eval-read-file tmp-file)))))
(provide 'ob-tcl)
;;; ob-tcl.el ends here
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