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430c72924c
* lisp/ob-ruby.el (org-babel-ruby-prompt): (org-babel-ruby-define-prompt): New variables used to set appropriate unique prompt and disable echo in session. (org-babel-ruby-initiate-session): Setup prompt and echo during session initialization. (org-babel-ruby-evaluate): Rely on `org-babel-ruby-initiate-session' to setup prompt and echo. Re-setting the prompt back after every evaluation can be tricky because of async nature of the prompt, so it is now dropped.
299 lines
10 KiB
EmacsLisp
299 lines
10 KiB
EmacsLisp
;;; ob-ruby.el --- Babel Functions for Ruby -*- lexical-binding: t; -*-
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;; Copyright (C) 2009-2023 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; URL: https://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 <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating ruby source code.
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;;; Requirements:
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;; - ruby and irb executables :: https://www.ruby-lang.org/
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;;
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;; - ruby-mode :: Comes with Emacs.
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;;
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;; - inf-ruby mode :: Can be installed through ELPA, or from
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;; https://raw.githubusercontent.com/nonsequitur/inf-ruby/master/inf-ruby.el
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;;; Code:
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(require 'org-macs)
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(org-assert-version)
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(require 'ob)
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(require 'org-macs)
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(declare-function run-ruby-or-pop-to-buffer "ext:inf-ruby" (command &optional name buffer))
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(declare-function inf-ruby-buffer "ext:inf-ruby" ())
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(declare-function xmp "ext:rcodetools" (&optional option))
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(defvar inf-ruby-default-implementation)
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(defvar inf-ruby-implementations)
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(defvar org-babel-tangle-lang-exts)
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(add-to-list 'org-babel-tangle-lang-exts '("ruby" . "rb"))
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(defvar org-babel-default-header-args:ruby '())
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(defvar org-babel-ruby-command "ruby"
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"Name of command to use for executing ruby code.
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It's possible to override it by using a header argument `:ruby'")
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(defcustom org-babel-ruby-hline-to "nil"
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"Replace hlines in incoming tables with this when translating to ruby."
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:group 'org-babel
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:version "24.4"
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:package-version '(Org . "8.0")
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:type 'string)
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(defcustom org-babel-ruby-nil-to 'hline
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"Replace nil in ruby tables with this before returning."
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:group 'org-babel
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:version "24.4"
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:package-version '(Org . "8.0")
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:type 'symbol)
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(defun org-babel-execute:ruby (body params)
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"Execute a block of Ruby code with Babel.
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This function is called by `org-babel-execute-src-block'."
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(let* ((session (org-babel-ruby-initiate-session
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(cdr (assq :session params)) params))
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(result-params (cdr (assq :result-params params)))
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(result-type (cdr (assq :result-type params)))
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(org-babel-ruby-command
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(or (cdr (assq :ruby params))
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org-babel-ruby-command))
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(full-body (org-babel-expand-body:generic
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body params (org-babel-variable-assignments:ruby params)))
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(result (if (member "xmp" result-params)
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(with-temp-buffer
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(org-require-package 'rcodetools "rcodetools (gem package)")
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(insert full-body)
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(xmp (cdr (assq :xmp-option params)))
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(buffer-string))
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(org-babel-ruby-evaluate
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session full-body result-type result-params))))
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(org-babel-reassemble-table
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(org-babel-result-cond result-params
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result
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(org-babel-ruby-table-or-string result))
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(org-babel-pick-name (cdr (assq :colname-names params))
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(cdr (assq :colnames params)))
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(org-babel-pick-name (cdr (assq :rowname-names params))
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(cdr (assq :rownames params))))))
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(defun org-babel-prep-session:ruby (session params)
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"Prepare SESSION according to the header arguments specified in PARAMS."
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;; (message "params=%S" params) ;; debugging
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(let* ((session (org-babel-ruby-initiate-session session))
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(var-lines (org-babel-variable-assignments:ruby params)))
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(org-babel-comint-in-buffer session
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(sit-for .5) (goto-char (point-max))
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(mapc (lambda (var)
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(insert var) (comint-send-input nil t)
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(org-babel-comint-wait-for-output session)
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(sit-for .1) (goto-char (point-max)))
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var-lines))
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session))
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(defun org-babel-load-session:ruby (session body params)
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"Load BODY into SESSION."
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(save-window-excursion
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(let ((buffer (org-babel-prep-session:ruby session params)))
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(with-current-buffer buffer
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(goto-char (process-mark (get-buffer-process (current-buffer))))
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(insert (org-babel-chomp body)))
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buffer)))
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;; helper functions
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(defun org-babel-variable-assignments:ruby (params)
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"Return list of ruby statements assigning the block's variables."
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(mapcar
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(lambda (pair)
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(format "%s=%s"
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(car pair)
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(org-babel-ruby-var-to-ruby (cdr pair))))
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(org-babel--get-vars params)))
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(defun org-babel-ruby-var-to-ruby (var)
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"Convert VAR into a ruby variable.
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Convert an elisp value into a string of ruby source code
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specifying a variable of the same value."
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(if (listp var)
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(concat "[" (mapconcat #'org-babel-ruby-var-to-ruby var ", ") "]")
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(if (eq var 'hline)
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org-babel-ruby-hline-to
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(format "%S" var))))
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(defun org-babel-ruby-table-or-string (results)
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"Convert RESULTS into an appropriate elisp value.
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If RESULTS look like a table, then convert them into an
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Emacs-lisp table, otherwise return the results as a string."
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(let ((res (org-babel-script-escape results)))
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(if (listp res)
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(mapcar (lambda (el) (if (not el)
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org-babel-ruby-nil-to el))
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res)
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res)))
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(defvar org-babel-ruby-prompt "_org_babel_ruby_prompt "
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"String used for unique prompt.")
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(defvar org-babel-ruby-define-prompt
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(format "IRB.conf[:PROMPT][:CUSTOM] = { :PROMPT_I => \"%s\" }" org-babel-ruby-prompt))
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(defun org-babel-ruby-initiate-session (&optional session params)
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"Initiate a ruby session.
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If there is not a current inferior-process-buffer in SESSION
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then create one. Return the initialized session."
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(unless (string= session "none")
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(org-require-package 'inf-ruby)
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(let* ((command (cdr (or (assq :ruby params)
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(assoc inf-ruby-default-implementation
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inf-ruby-implementations))))
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(buffer (get-buffer (format "*%s*" session)))
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(new-session? (not buffer))
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(session-buffer (or buffer (save-window-excursion
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(run-ruby-or-pop-to-buffer
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(if (functionp command)
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(funcall command)
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command)
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(or session "ruby")
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(unless session
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(inf-ruby-buffer)))
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(current-buffer)))))
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(if (org-babel-comint-buffer-livep session-buffer)
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(progn
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(sit-for .25)
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;; Setup machine-readable prompt: no echo, prompts matching
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;; uniquely by regexp.
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(when new-session?
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(with-current-buffer session-buffer
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(setq-local comint-prompt-regexp (concat "^" org-babel-ruby-prompt))
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(insert org-babel-ruby-define-prompt ";")
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(insert "_org_prompt_mode=conf.prompt_mode;conf.prompt_mode=:CUSTOM;")
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(insert "conf.echo=false")
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(comint-send-input nil t)))
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session-buffer)
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(sit-for .5)
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(org-babel-ruby-initiate-session session)))))
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(defvar org-babel-ruby-eoe-indicator ":org_babel_ruby_eoe"
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"String to indicate that evaluation has completed.")
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(defvar org-babel-ruby-f-write
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"File.open('%s','w'){|f| f.write((_.class == String) ? _ : _.inspect)}")
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(defvar org-babel-ruby-pp-f-write
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"File.open('%s','w'){|f| $stdout = f; pp(results); $stdout = orig_out}")
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(defvar org-babel-ruby-wrapper-method
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"
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def main()
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%s
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end
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results = main()
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File.open('%s', 'w'){ |f| f.write((results.class == String) ? results : results.inspect) }
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")
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(defvar org-babel-ruby-pp-wrapper-method
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"
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require 'pp'
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def main()
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%s
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end
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results = main()
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File.open('%s', 'w') do |f|
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$stdout = f
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pp results
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end
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")
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(defun org-babel-ruby-evaluate
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(buffer body &optional result-type result-params)
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"Pass BODY to the Ruby process in BUFFER.
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If RESULT-TYPE equals `output' then return a list of the outputs
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of the statements in BODY, if RESULT-TYPE equals `value' then
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return the value of the last statement in BODY, as elisp."
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(if (not buffer)
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;; external process evaluation
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(pcase result-type
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(`output (org-babel-eval org-babel-ruby-command body))
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(`value (let ((tmp-file (org-babel-temp-file "ruby-")))
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(org-babel-eval
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org-babel-ruby-command
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(format (if (member "pp" result-params)
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org-babel-ruby-pp-wrapper-method
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org-babel-ruby-wrapper-method)
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body (org-babel-process-file-name tmp-file 'noquote)))
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(org-babel-eval-read-file tmp-file))))
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;; comint session evaluation
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(pcase result-type
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(`output
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(let ((eoe-string (format "puts \"%s\"" org-babel-ruby-eoe-indicator)))
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;; Force the session to be ready before the actual session
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;; code is run. There is some problem in comint that will
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;; sometimes show the prompt after the input has already
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;; been inserted and that throws off the extraction of the
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;; result for Babel.
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(org-babel-comint-with-output
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(buffer org-babel-ruby-eoe-indicator t eoe-string)
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(insert eoe-string) (comint-send-input nil t))
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(mapconcat
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#'identity
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(butlast
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(split-string
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(mapconcat
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#'org-trim
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(org-babel-comint-with-output
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(buffer org-babel-ruby-eoe-indicator t body)
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(insert (org-babel-chomp body) "\n" eoe-string)
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(comint-send-input nil t))
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"\n") "[\r\n]")) "\n")))
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(`value
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(let* ((tmp-file (org-babel-temp-file "ruby-"))
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(ppp (or (member "code" result-params)
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(member "pp" result-params))))
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(org-babel-comint-with-output
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(buffer org-babel-ruby-eoe-indicator t body)
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(when ppp (insert "require 'pp';") (comint-send-input nil t))
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(mapc
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(lambda (line)
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(insert (org-babel-chomp line)) (comint-send-input nil t))
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(append
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(list body)
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(if (not ppp)
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(list (format org-babel-ruby-f-write
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(org-babel-process-file-name tmp-file 'noquote)))
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(list
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"results=_" "require 'pp'" "orig_out = $stdout"
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(format org-babel-ruby-pp-f-write
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(org-babel-process-file-name tmp-file 'noquote))))
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(list org-babel-ruby-eoe-indicator)))
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(comint-send-input nil t))
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(org-babel-eval-read-file tmp-file))))))
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(provide 'ob-ruby)
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;;; ob-ruby.el ends here
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