emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
blob 9543f3bbaf5794b0fe50cc5e147fd0d8812e2af1 9774 bytes (raw)
name: lisp/ob-ruby.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
 
;;; ob-ruby.el --- Babel Functions for Ruby          -*- lexical-binding: t; -*-

;; Copyright (C) 2009-2022 Free Software Foundation, Inc.

;; Author: Eric Schulte
;; Keywords: literate programming, reproducible research
;; URL: https://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 :: https://www.ruby-lang.org/
;;
;; - ruby-mode :: Can be installed through ELPA, or from
;;   https://github.com/eschulte/rinari/raw/master/util/ruby-mode.el
;;
;; - inf-ruby mode :: Can be installed through ELPA, or from
;;   https://github.com/eschulte/rinari/raw/master/util/inf-ruby.el

;;; Code:
(require 'ob)
(require 'org-macs)

(declare-function run-ruby-or-pop-to-buffer "ext:inf-ruby" (command &optional name buffer))
(declare-function inf-ruby-buffer "ext:inf-ruby" ())
(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.
It's possible to override it by using a header argument `:ruby'")

(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)) params))
         (result-params (cdr (assq :result-params params)))
         (result-type (cdr (assq :result-type params)))
	 (org-babel-ruby-command
	  (or (cdr (assq :ruby params))
	      org-babel-ruby-command))
         (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* ((command (cdr (or (assq :ruby params)
			     (assoc inf-ruby-default-implementation
				    inf-ruby-implementations))))
	   (buffer (get-buffer (format "*%s*" session)))
	   (session-buffer (or buffer (save-window-excursion
					(run-ruby-or-pop-to-buffer
					 (if (functionp command)
					     (funcall command)
					   command)
					 (or session "ruby")
					 (unless session
					   (inf-ruby-buffer)))
					(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 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

debug log:

solving 9543f3bba ...
found 9543f3bba in https://git.savannah.gnu.org/cgit/emacs/org-mode.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).