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authorS├ębastien Delafond <sdelafond@gmail.com>2015-08-25 12:27:35 +0200
committerS├ębastien Delafond <sdelafond@gmail.com>2015-08-25 12:27:35 +0200
commit1be13d57dc8357576a8285c6dadc03db9e3ed7b0 (patch)
treee35b32d4dbd60cb6cea09f3c0797cc8877352def /lisp/ob-J.el
parent4dc4918d0d667f18f3d5e3dd71e6f117ddb8af8a (diff)
Imported Upstream version 8.3.1
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+;;; ob-J.el --- org-babel functions for J evaluation
+
+;; Copyright (C) 2011-2013 Free Software Foundation, Inc.
+
+;; Author: Oleh Krehel
+;; 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 J code.
+;;
+;; Session interaction depends on `j-console' from package `j-mode'
+;; (available in MELPA).
+
+;;; Code:
+(require 'ob)
+
+(declare-function org-trim "org" (S))
+(declare-function j-console-ensure-session "ext:j-console" ())
+
+(defun org-babel-expand-body:J (body params &optional processed-params)
+ "Expand BODY according to PARAMS, return the expanded body.
+PROCESSED-PARAMS isn't used yet."
+ (org-babel-J-interleave-echos-except-functions body))
+
+(defun org-babel-J-interleave-echos (body)
+ "Interleave echo',' between each source line of BODY."
+ (mapconcat #'identity (split-string body "\n") "\necho','\n"))
+
+(defun org-babel-J-interleave-echos-except-functions (body)
+ "Interleave echo',' between source lines of BODY that aren't functions."
+ (if (obj-string-match-m "\\(?:^\\|\n\\)[^\n]*\\(?:0\\|1\\|2\\|3\\|4\\|dyad\\) : 0\n.*\n)\\(?:\n\\|$\\)" body)
+ (let ((s1 (substring body 0 (match-beginning 0)))
+ (s2 (match-string 0 body))
+ (s3 (substring body (match-end 0))))
+ (concat
+ (if (string= s1 "")
+ ""
+ (concat (org-babel-J-interleave-echos s1)
+ "\necho','\n"))
+ s2
+ "\necho','\n"
+ (org-babel-J-interleave-echos-except-functions s3)))
+ (org-babel-J-interleave-echos body)))
+
+(defun org-babel-execute:J (body params)
+ "Execute a block of J code BODY.
+PARAMS are given by org-babel.
+This function is called by `org-babel-execute-src-block'"
+ (message "executing J source code block")
+ (let* ((processed-params (org-babel-process-params params))
+ (sessionp (cdr (assoc :session params)))
+ (session (org-babel-j-initiate-session sessionp))
+ (vars (nth 2 processed-params))
+ (result-params (nth 3 processed-params))
+ (result-type (nth 4 processed-params))
+ (full-body (org-babel-expand-body:J
+ body params processed-params))
+ (tmp-script-file (org-babel-temp-file "J-src")))
+ (org-babel-J-strip-whitespace
+ (if (string= sessionp "none")
+ (progn
+ (with-temp-file tmp-script-file
+ (insert full-body))
+ (org-babel-eval (format "jconsole < %s" tmp-script-file) ""))
+ (org-babel-J-eval-string full-body)))))
+
+(defun org-babel-J-eval-string (str)
+ "Sends STR to the `j-console-cmd' session and exectues it."
+ (let ((session (j-console-ensure-session)))
+ (with-current-buffer (process-buffer session)
+ (goto-char (point-max))
+ (insert (format "\n%s\n" str))
+ (let ((beg (point)))
+ (comint-send-input)
+ (sit-for .1)
+ (buffer-substring-no-properties
+ beg (point-max))))))
+
+(defun org-babel-J-strip-whitespace (str)
+ "Remove whitespace from jconsole output STR."
+ (mapconcat
+ #'identity
+ (delete "" (mapcar
+ #'org-babel-J-print-block
+ (split-string str "^ *,\n" t)))
+ "\n\n"))
+
+(defun obj-get-string-alignment (str)
+ "Return a number to describe STR alignment.
+STR represents a table.
+Positive/negative/zero result means right/left/undetermined.
+Don't trust first line."
+ (let* ((str (org-trim str))
+ (lines (split-string str "\n" t))
+ n1 n2)
+ (cond ((<= (length lines) 1)
+ 0)
+ ((= (length lines) 2)
+ ;; numbers are right-aligned
+ (if (and
+ (numberp (read (car lines)))
+ (numberp (read (cadr lines)))
+ (setq n1 (obj-match-second-space-right (nth 0 lines)))
+ (setq n2 (obj-match-second-space-right (nth 1 lines))))
+ n2
+ 0))
+ ((not (obj-match-second-space-left (nth 0 lines)))
+ 0)
+ ((and
+ (setq n1 (obj-match-second-space-left (nth 1 lines)))
+ (setq n2 (obj-match-second-space-left (nth 2 lines)))
+ (= n1 n2))
+ n1)
+ ((and
+ (setq n1 (obj-match-second-space-right (nth 1 lines)))
+ (setq n2 (obj-match-second-space-right (nth 2 lines)))
+ (= n1 n2))
+ (- n1))
+ (t 0))))
+
+(defun org-babel-J-print-block (x)
+ "Prettify jconsole output X."
+ (let* ((x (org-trim x))
+ (a (obj-get-string-alignment x))
+ (lines (split-string x "\n" t))
+ b)
+ (cond ((< a 0)
+ (setq b (obj-match-second-space-right (nth 0 lines)))
+ (concat (make-string (+ a b) ? ) x))
+ ((> a 0)
+ (setq b (obj-match-second-space-left (nth 0 lines)))
+ (concat (make-string (- a b) ? ) x))
+ (t x))))
+
+(defun obj-match-second-space-left (s)
+ "Return position of leftmost space in second space block of S or nil."
+ (and (string-match "^ *[^ ]+\\( \\)" s)
+ (match-beginning 1)))
+
+(defun obj-match-second-space-right (s)
+ "Return position of rightmost space in second space block of S or nil."
+ (and (string-match "^ *[^ ]+ *\\( \\)[^ ]" s)
+ (match-beginning 1)))
+
+(defun obj-string-match-m (regexp string &optional start)
+ "Call (string-match REGEXP STRING START).
+REGEXP is modified so that .* matches newlines as well."
+ (string-match
+ (replace-regexp-in-string "\\.\\*" "[\0-\377[:nonascii:]]*" regexp)
+ string
+ start))
+
+(defun org-babel-j-initiate-session (&optional session)
+ "Initiate a J session.
+SESSION is a parameter given by org-babel."
+ (unless (string= session "none")
+ (require 'j-console)
+ (j-console-ensure-session)))
+
+(provide 'ob-J)
+
+;;; ob-J.el ends here