1
0
mirror of https://git.savannah.gnu.org/git/emacs.git synced 2025-01-20 18:17:20 +00:00
emacs/lisp/org/ob-ruby.el
Paul Eggert bc511a64f6 Prefer HTTPS to FTP and HTTP in documentation
Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November.  Change these FTP URLs to https://ftp.gnu.org
instead.  Make similar changes for URLs to other organizations moving
away from FTP.  Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.
2017-09-13 15:54:37 -07:00

269 lines
9.2 KiB
EmacsLisp

;;; ob-ruby.el --- Babel Functions for Ruby -*- lexical-binding: t; -*-
;; Copyright (C) 2009-2017 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Org-Babel support for evaluating ruby source code.
;;; Requirements:
;; - ruby and irb executables :: http://www.ruby-lang.org/
;;
;; - ruby-mode :: Can be installed through ELPA, or from
;; http://github.com/eschulte/rinari/raw/master/util/ruby-mode.el
;;
;; - inf-ruby mode :: Can be installed through ELPA, or from
;; http://github.com/eschulte/rinari/raw/master/util/inf-ruby.el
;;; Code:
(require 'ob)
(declare-function org-trim "org" (s &optional keep-lead))
(declare-function run-ruby "ext:inf-ruby" (&optional command name))
(declare-function xmp "ext:rcodetools" (&optional option))
(defvar inf-ruby-default-implementation)
(defvar inf-ruby-implementations)
(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("ruby" . "rb"))
(defvar org-babel-default-header-args:ruby '())
(defvar org-babel-ruby-command "ruby"
"Name of command to use for executing ruby code.")
(defcustom org-babel-ruby-hline-to "nil"
"Replace hlines in incoming tables with this when translating to ruby."
:group 'org-babel
:version "24.4"
:package-version '(Org . "8.0")
:type 'string)
(defcustom org-babel-ruby-nil-to 'hline
"Replace nil in ruby tables with this before returning."
:group 'org-babel
:version "24.4"
:package-version '(Org . "8.0")
:type 'symbol)
(defun org-babel-execute:ruby (body params)
"Execute a block of Ruby code with Babel.
This function is called by `org-babel-execute-src-block'."
(let* ((session (org-babel-ruby-initiate-session
(cdr (assq :session params))))
(result-params (cdr (assq :result-params params)))
(result-type (cdr (assq :result-type params)))
(full-body (org-babel-expand-body:generic
body params (org-babel-variable-assignments:ruby params)))
(result (if (member "xmp" result-params)
(with-temp-buffer
(require 'rcodetools)
(insert full-body)
(xmp (cdr (assq :xmp-option params)))
(buffer-string))
(org-babel-ruby-evaluate
session full-body result-type result-params))))
(org-babel-reassemble-table
(org-babel-result-cond result-params
result
(org-babel-ruby-table-or-string result))
(org-babel-pick-name (cdr (assq :colname-names params))
(cdr (assq :colnames params)))
(org-babel-pick-name (cdr (assq :rowname-names params))
(cdr (assq :rownames params))))))
(defun org-babel-prep-session:ruby (session params)
"Prepare SESSION according to the header arguments specified in PARAMS."
;; (message "params=%S" params) ;; debugging
(let* ((session (org-babel-ruby-initiate-session session))
(var-lines (org-babel-variable-assignments:ruby params)))
(org-babel-comint-in-buffer session
(sit-for .5) (goto-char (point-max))
(mapc (lambda (var)
(insert var) (comint-send-input nil t)
(org-babel-comint-wait-for-output session)
(sit-for .1) (goto-char (point-max))) var-lines))
session))
(defun org-babel-load-session:ruby (session body params)
"Load BODY into SESSION."
(save-window-excursion
(let ((buffer (org-babel-prep-session:ruby session params)))
(with-current-buffer buffer
(goto-char (process-mark (get-buffer-process (current-buffer))))
(insert (org-babel-chomp body)))
buffer)))
;; helper functions
(defun org-babel-variable-assignments:ruby (params)
"Return list of ruby statements assigning the block's variables."
(mapcar
(lambda (pair)
(format "%s=%s"
(car pair)
(org-babel-ruby-var-to-ruby (cdr pair))))
(org-babel--get-vars params)))
(defun org-babel-ruby-var-to-ruby (var)
"Convert VAR into a ruby variable.
Convert an elisp value into a string of ruby source code
specifying a variable of the same value."
(if (listp var)
(concat "[" (mapconcat #'org-babel-ruby-var-to-ruby var ", ") "]")
(if (eq var 'hline)
org-babel-ruby-hline-to
(format "%S" var))))
(defun org-babel-ruby-table-or-string (results)
"Convert RESULTS into an appropriate elisp value.
If RESULTS look like a table, then convert them into an
Emacs-lisp table, otherwise return the results as a string."
(let ((res (org-babel-script-escape results)))
(if (listp res)
(mapcar (lambda (el) (if (not el)
org-babel-ruby-nil-to el))
res)
res)))
(defun org-babel-ruby-initiate-session (&optional session _params)
"Initiate a ruby session.
If there is not a current inferior-process-buffer in SESSION
then create one. Return the initialized session."
(unless (string= session "none")
(require 'inf-ruby)
(let* ((cmd (cdr (assoc inf-ruby-default-implementation
inf-ruby-implementations)))
(buffer (get-buffer (format "*%s*" session)))
(session-buffer (or buffer (save-window-excursion
(run-ruby cmd session)
(current-buffer)))))
(if (org-babel-comint-buffer-livep session-buffer)
(progn (sit-for .25) session-buffer)
(sit-for .5)
(org-babel-ruby-initiate-session session)))))
(defvar org-babel-ruby-eoe-indicator ":org_babel_ruby_eoe"
"String to indicate that evaluation has completed.")
(defvar org-babel-ruby-f-write
"File.open('%s','w'){|f| f.write((_.class == String) ? _ : _.inspect)}")
(defvar org-babel-ruby-pp-f-write
"File.open('%s','w'){|f| $stdout = f; pp(results); $stdout = orig_out}")
(defvar org-babel-ruby-wrapper-method
"
def main()
%s
end
results = main()
File.open('%s', 'w'){ |f| f.write((results.class == String) ? results : results.inspect) }
")
(defvar org-babel-ruby-pp-wrapper-method
"
require 'pp'
def main()
%s
end
results = main()
File.open('%s', 'w') do |f|
$stdout = f
pp results
end
")
(defun org-babel-ruby-evaluate
(buffer body &optional result-type result-params)
"Pass BODY to the Ruby process in BUFFER.
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."
(if (not buffer)
;; external process evaluation
(pcase result-type
(`output (org-babel-eval org-babel-ruby-command body))
(`value (let ((tmp-file (org-babel-temp-file "ruby-")))
(org-babel-eval
org-babel-ruby-command
(format (if (member "pp" result-params)
org-babel-ruby-pp-wrapper-method
org-babel-ruby-wrapper-method)
body (org-babel-process-file-name tmp-file 'noquote)))
(org-babel-eval-read-file tmp-file))))
;; comint session evaluation
(pcase result-type
(`output
(let ((eoe-string (format "puts \"%s\"" org-babel-ruby-eoe-indicator)))
;; Force the session to be ready before the actual session
;; code is run. There is some problem in comint that will
;; sometimes show the prompt after the the input has already
;; been inserted and that throws off the extraction of the
;; result for Babel.
(org-babel-comint-with-output
(buffer org-babel-ruby-eoe-indicator t eoe-string)
(insert eoe-string) (comint-send-input nil t))
;; Now we can start the evaluation.
(mapconcat
#'identity
(butlast
(split-string
(mapconcat
#'org-trim
(org-babel-comint-with-output
(buffer org-babel-ruby-eoe-indicator t body)
(mapc
(lambda (line)
(insert (org-babel-chomp line)) (comint-send-input nil t))
(list "conf.echo=false;_org_prompt_mode=conf.prompt_mode;conf.prompt_mode=:NULL"
body
"conf.prompt_mode=_org_prompt_mode;conf.echo=true"
eoe-string)))
"\n") "[\r\n]") 4) "\n")))
(`value
(let* ((tmp-file (org-babel-temp-file "ruby-"))
(ppp (or (member "code" result-params)
(member "pp" result-params))))
(org-babel-comint-with-output
(buffer org-babel-ruby-eoe-indicator t body)
(when ppp (insert "require 'pp';") (comint-send-input nil t))
(mapc
(lambda (line)
(insert (org-babel-chomp line)) (comint-send-input nil t))
(append
(list body)
(if (not ppp)
(list (format org-babel-ruby-f-write
(org-babel-process-file-name tmp-file 'noquote)))
(list
"results=_" "require 'pp'" "orig_out = $stdout"
(format org-babel-ruby-pp-f-write
(org-babel-process-file-name tmp-file 'noquote))))
(list org-babel-ruby-eoe-indicator)))
(comint-send-input nil t))
(org-babel-eval-read-file tmp-file))))))
(provide 'ob-ruby)
;;; ob-ruby.el ends here