Fix regexp for finding code blocks
[bpt/emacs.git] / lisp / org / ob.el
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1;;; ob.el --- working with code blocks in org-mode
2
3ab2c837 3;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
86fbb8ca 4
acedf35c 5;; Author: Eric Schulte, Dan Davison
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6;; Keywords: literate programming, reproducible research
7;; Homepage: http://orgmode.org
3ab2c837 8;; Version: 7.7
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9
10;; This file is part of GNU Emacs.
11
12;; GNU Emacs is free software: you can redistribute it and/or modify
13;; it under the terms of the GNU General Public License as published by
14;; the Free Software Foundation, either version 3 of the License, or
15;; (at your option) any later version.
16
17;; GNU Emacs is distributed in the hope that it will be useful,
18;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20;; GNU General Public License for more details.
21
22;; You should have received a copy of the GNU General Public License
23;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24
86fbb8ca 25;;; Code:
eeb4145e 26(eval-when-compile
e720ae53 27 (require 'cl))
acedf35c 28(require 'ob-eval)
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29(require 'org-macs)
30
31(defvar org-babel-call-process-region-original)
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32(defvar org-src-lang-modes)
33(defvar org-babel-library-of-babel)
86fbb8ca 34(declare-function show-all "outline" ())
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35(declare-function tramp-compat-make-temp-file "tramp-compat"
36 (filename &optional dir-flag))
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37(declare-function tramp-dissect-file-name "tramp" (name &optional nodefault))
38(declare-function tramp-file-name-user "tramp" (vec))
39(declare-function tramp-file-name-host "tramp" (vec))
afe98dfa 40(declare-function with-parsed-tramp-file-name "tramp" (filename var &rest body))
86fbb8ca 41(declare-function org-icompleting-read "org" (&rest args))
acedf35c 42(declare-function org-edit-src-code "org-src"
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43 (&optional context code edit-buffer-name quietp))
44(declare-function org-edit-src-exit "org-src" (&optional context))
86fbb8ca 45(declare-function org-open-at-point "org" (&optional in-emacs reference-buffer))
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46(declare-function org-save-outline-visibility "org" (use-markers &rest body))
47(declare-function org-outline-overlay-data "org" (&optional use-markers))
48(declare-function org-set-outline-overlay-data "org" (data))
86fbb8ca 49(declare-function org-narrow-to-subtree "org" ())
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50(declare-function org-entry-get "org"
51 (pom property &optional inherit literal-nil))
86fbb8ca 52(declare-function org-make-options-regexp "org" (kwds &optional extra))
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53(declare-function org-do-remove-indentation "org" (&optional n))
54(declare-function org-show-context "org" (&optional key))
55(declare-function org-at-table-p "org" (&optional table-type))
56(declare-function org-cycle "org" (&optional arg))
57(declare-function org-uniquify "org" (list))
afe98dfa 58(declare-function org-current-level "org" ())
f1eee0b6 59(declare-function org-table-import "org-table" (file arg))
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60(declare-function org-add-hook "org-compat"
61 (hook function &optional append local))
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62(declare-function org-table-align "org-table" ())
63(declare-function org-table-end "org-table" (&optional table-type))
64(declare-function orgtbl-to-generic "org-table" (table params))
65(declare-function orgtbl-to-orgtbl "org-table" (table params))
3ab2c837 66(declare-function org-babel-tangle-comment-links "ob-tangle" (&optional info))
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67(declare-function org-babel-lob-get-info "ob-lob" nil)
68(declare-function org-babel-ref-split-args "ob-ref" (arg-string))
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69(declare-function org-babel-ref-parse "ob-ref" (assignment))
70(declare-function org-babel-ref-resolve "ob-ref" (ref))
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71(declare-function org-babel-ref-goto-headline-id "ob-ref" (id))
72(declare-function org-babel-ref-headline-body "ob-ref" ())
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73(declare-function org-babel-lob-execute-maybe "ob-lob" ())
74(declare-function org-number-sequence "org-compat" (from &optional to inc))
3ab2c837 75(declare-function org-at-item-p "org-list" ())
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76(declare-function org-list-parse-list "org-list" (&optional delete))
77(declare-function org-list-to-generic "org-list" (LIST PARAMS))
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78(declare-function org-list-struct "org-list" ())
79(declare-function org-list-prevs-alist "org-list" (struct))
80(declare-function org-list-get-list-end "org-list" (item struct prevs))
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81
82(defgroup org-babel nil
83 "Code block evaluation and management in `org-mode' documents."
84 :tag "Babel"
85 :group 'org)
86
87(defcustom org-confirm-babel-evaluate t
88 "Confirm before evaluation.
89Require confirmation before interactively evaluating code
90blocks in Org-mode buffers. The default value of this variable
91is t, meaning confirmation is required for any code block
92evaluation. This variable can be set to nil to inhibit any
93future confirmation requests. This variable can also be set to a
94function which takes two arguments the language of the code block
95and the body of the code block. Such a function should then
96return a non-nil value if the user should be prompted for
97execution or nil if no prompt is required.
98
99Warning: Disabling confirmation may result in accidental
100evaluation of potentially harmful code. It may be advisable
101remove code block execution from C-c C-c as further protection
102against accidental code block evaluation. The
103`org-babel-no-eval-on-ctrl-c-ctrl-c' variable can be used to
104remove code block execution from the C-c C-c keybinding."
105 :group 'org-babel
106 :type '(choice boolean function))
107;; don't allow this variable to be changed through file settings
108(put 'org-confirm-babel-evaluate 'safe-local-variable (lambda (x) (eq x t)))
109
110(defcustom org-babel-no-eval-on-ctrl-c-ctrl-c nil
111 "Remove code block evaluation from the C-c C-c key binding."
112 :group 'org-babel
113 :type 'boolean)
114
115(defvar org-babel-src-name-regexp
116 "^[ \t]*#\\+\\(srcname\\|source\\|function\\):[ \t]*"
117 "Regular expression used to match a source name line.")
118
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119(defvar org-babel-multi-line-header-regexp
120 "^[ \t]*#\\+headers?:[ \t]*\\([^\n]*\\)$"
121 "Regular expression used to match multi-line header arguments.")
122
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123(defvar org-babel-src-name-w-name-regexp
124 (concat org-babel-src-name-regexp
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125 "\\("
126 org-babel-multi-line-header-regexp
127 "\\)*"
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128 "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)")
129 "Regular expression matching source name lines with a name.")
130
131(defvar org-babel-src-block-regexp
132 (concat
3ab2c837 133 ;; (1) indentation (2) lang
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134 "^\\([ \t]*\\)#\\+begin_src[ \t]+\\([^ \f\t\n\r\v]+\\)[ \t]*"
135 ;; (3) switches
136 "\\([^\":\n]*\"[^\"\n*]*\"[^\":\n]*\\|[^\":\n]*\\)"
137 ;; (4) header arguments
138 "\\([^\n]*\\)\n"
139 ;; (5) body
4464a33d 140 "\\([^\000]*?\n\\)?[ \t]*#\\+end_src")
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141 "Regexp used to identify code blocks.")
142
143(defvar org-babel-inline-src-block-regexp
144 (concat
145 ;; (1) replacement target (2) lang
3ab2c837 146 "[^-[:alnum:]]\\(src_\\([^ \f\t\n\r\v]+\\)"
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147 ;; (3,4) (unused, headers)
148 "\\(\\|\\[\\(.*?\\)\\]\\)"
149 ;; (5) body
150 "{\\([^\f\n\r\v]+?\\)}\\)")
151 "Regexp used to identify inline src-blocks.")
152
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153(defun org-babel-get-header (params key &optional others)
154 "Select only header argument of type KEY from a list.
155Optional argument OTHERS indicates that only the header that do
156not match KEY should be returned."
157 (delq nil
158 (mapcar
159 (lambda (p) (when (funcall (if others #'not #'identity) (eq (car p) key)) p))
160 params)))
161
162(defun org-babel-get-src-block-info (&optional light)
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163 "Get information on the current source block.
164
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165Optional argument LIGHT does not resolve remote variable
166references; a process which could likely result in the execution
167of other code blocks.
168
86fbb8ca 169Returns a list
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170 (language body header-arguments-alist switches name indent)."
171 (let ((case-fold-search t) head info name indent)
172 ;; full code block
86fbb8ca 173 (if (setq head (org-babel-where-is-src-block-head))
afe98dfa 174 (save-excursion
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175 (goto-char head)
176 (setq info (org-babel-parse-src-block-match))
177 (setq indent (car (last info)))
178 (setq info (butlast info))
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179 (while (and (forward-line -1)
180 (looking-at org-babel-multi-line-header-regexp))
181 (setf (nth 2 info)
182 (org-babel-merge-params
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183 (nth 2 info)
184 (org-babel-parse-header-arguments (match-string 1)))))
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185 (when (looking-at org-babel-src-name-w-name-regexp)
186 (setq name (org-babel-clean-text-properties (match-string 4)))
187 (when (match-string 6)
188 (setf (nth 2 info) ;; merge functional-syntax vars and header-args
189 (org-babel-merge-params
190 (mapcar (lambda (ref) (cons :var ref))
191 (org-babel-ref-split-args (match-string 6)))
192 (nth 2 info))))))
193 ;; inline source block
194 (when (save-excursion (re-search-backward "[ \f\t\n\r\v]" nil t)
195 (looking-at org-babel-inline-src-block-regexp))
196 (setq info (org-babel-parse-inline-src-block-match))))
197 ;; resolve variable references and add summary parameters
198 (when (and info (not light))
199 (setf (nth 2 info) (org-babel-process-params (nth 2 info))))
200 (when info (append info (list name indent)))))
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201
202(defun org-babel-confirm-evaluate (info)
203 "Confirm evaluation of the code block INFO.
204This behavior can be suppressed by setting the value of
205`org-confirm-babel-evaluate' to nil, in which case all future
206interactive code block evaluations will proceed without any
207confirmation from the user.
208
209Note disabling confirmation may result in accidental evaluation
210of potentially harmful code."
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211 (let* ((eval (or (cdr (assoc :eval (nth 2 info)))
212 (when (assoc :noeval (nth 2 info)) "no")))
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213 (query (cond ((equal eval "query") t)
214 ((functionp org-confirm-babel-evaluate)
215 (funcall org-confirm-babel-evaluate
216 (nth 0 info) (nth 1 info)))
217 (t org-confirm-babel-evaluate))))
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218 (if (or (equal eval "never") (equal eval "no")
219 (and query
220 (not (yes-or-no-p
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221 (format "Evaluate this%scode block%son your system? "
222 (if info (format " %s " (nth 0 info)) " ")
223 (if (nth 4 info)
224 (format " (%s) " (nth 4 info)) " "))))))
225 (prog1 nil (message "Evaluation %s"
226 (if (or (equal eval "never") (equal eval "no"))
227 "Disabled" "Aborted")))
afe98dfa 228 t)))
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229
230;;;###autoload
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231(defun org-babel-execute-safely-maybe ()
232 (unless org-babel-no-eval-on-ctrl-c-ctrl-c
233 (org-babel-execute-maybe)))
234
235(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-execute-safely-maybe)
236
237;;;###autoload
238(defun org-babel-execute-maybe ()
239 (interactive)
240 (or (org-babel-execute-src-block-maybe)
241 (org-babel-lob-execute-maybe)))
242
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243(defun org-babel-execute-src-block-maybe ()
244 "Conditionally execute a source block.
245Detect if this is context for a Babel src-block and if so
246then run `org-babel-execute-src-block'."
247 (interactive)
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248 (let ((info (org-babel-get-src-block-info)))
249 (if info
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250 (progn (org-babel-eval-wipe-error-buffer)
251 (org-babel-execute-src-block current-prefix-arg info) t) nil)))
86fbb8ca 252
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253;;;###autoload
254(defun org-babel-view-src-block-info ()
255 "Display information on the current source block.
256This includes header arguments, language and name, and is largely
257a window into the `org-babel-get-src-block-info' function."
258 (interactive)
259 (let ((info (org-babel-get-src-block-info 'light)))
260 (flet ((full (it) (> (length it) 0))
261 (printf (fmt &rest args) (princ (apply #'format fmt args))))
262 (when info
263 (with-help-window (help-buffer)
264 (let ((name (nth 4 info))
265 (lang (nth 0 info))
266 (switches (nth 3 info))
267 (header-args (nth 2 info)))
268 (when name (printf "Name: %s\n" name))
269 (when lang (printf "Lang: %s\n" lang))
270 (when (full switches) (printf "Switches: %s\n" switches))
271 (printf "Header Arguments:\n")
272 (dolist (pair (sort header-args
273 (lambda (a b) (string< (symbol-name (car a))
274 (symbol-name (car b))))))
275 (when (full (cdr pair))
276 (printf "\t%S%s\t%s\n"
277 (car pair)
278 (if (> (length (format "%S" (car pair))) 7) "" "\t")
279 (cdr pair))))))))))
280
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281;;;###autoload
282(defun org-babel-expand-src-block-maybe ()
283 "Conditionally expand a source block.
284Detect if this is context for a org-babel src-block and if so
285then run `org-babel-expand-src-block'."
286 (interactive)
287 (let ((info (org-babel-get-src-block-info)))
288 (if info
289 (progn (org-babel-expand-src-block current-prefix-arg info) t)
290 nil)))
291
292;;;###autoload
293(defun org-babel-load-in-session-maybe ()
294 "Conditionally load a source block in a session.
295Detect if this is context for a org-babel src-block and if so
296then run `org-babel-load-in-session'."
297 (interactive)
298 (let ((info (org-babel-get-src-block-info)))
299 (if info
300 (progn (org-babel-load-in-session current-prefix-arg info) t)
301 nil)))
302
303(add-hook 'org-metaup-hook 'org-babel-load-in-session-maybe)
304
305;;;###autoload
306(defun org-babel-pop-to-session-maybe ()
307 "Conditionally pop to a session.
308Detect if this is context for a org-babel src-block and if so
309then run `org-babel-pop-to-session'."
310 (interactive)
311 (let ((info (org-babel-get-src-block-info)))
312 (if info (progn (org-babel-pop-to-session current-prefix-arg info) t) nil)))
313
314(add-hook 'org-metadown-hook 'org-babel-pop-to-session-maybe)
315
316(defconst org-babel-header-arg-names
317 '(cache cmdline colnames dir exports file noweb results
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318 session tangle var eval noeval comments no-expand shebang
319 padline noweb-ref)
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320 "Common header arguments used by org-babel.
321Note that individual languages may define their own language
322specific header arguments as well.")
323
324(defvar org-babel-default-header-args
325 '((:session . "none") (:results . "replace") (:exports . "code")
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326 (:cache . "no") (:noweb . "no") (:hlines . "no") (:tangle . "no")
327 (:padnewline . "yes"))
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328 "Default arguments to use when evaluating a source block.")
329
330(defvar org-babel-default-inline-header-args
3ab2c837 331 '((:session . "none") (:results . "replace") (:exports . "results"))
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332 "Default arguments to use when evaluating an inline source block.")
333
3ab2c837 334(defvar org-babel-data-names '("TBLNAME" "RESNAME" "RESULTS" "DATA"))
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335
336(defvar org-babel-result-regexp
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337 (concat "^[ \t]*#\\+"
338 (regexp-opt org-babel-data-names t)
339 "\\(\\[\\([[:alnum:]]+\\)\\]\\)?\\:[ \t]*")
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340 "Regular expression used to match result lines.
341If the results are associated with a hash key then the hash will
342be saved in the second match data.")
343
344(defvar org-babel-result-w-name-regexp
345 (concat org-babel-result-regexp
346 "\\([^ ()\f\t\n\r\v]+\\)\\(\(\\(.*\\)\)\\|\\)"))
347
348(defvar org-babel-min-lines-for-block-output 10
349 "The minimum number of lines for block output.
350If number of lines of output is equal to or exceeds this
351value, the output is placed in a #+begin_example...#+end_example
352block. Otherwise the output is marked as literal by inserting
353colons at the starts of the lines. This variable only takes
354effect if the :results output option is in effect.")
355
356(defvar org-babel-noweb-error-langs nil
357 "Languages for which Babel will raise literate programming errors.
358List of languages for which errors should be raised when the
359source code block satisfying a noweb reference in this language
360can not be resolved.")
361
362(defvar org-babel-hash-show 4
363 "Number of initial characters to show of a hidden results hash.")
364
365(defvar org-babel-after-execute-hook nil
366 "Hook for functions to be called after `org-babel-execute-src-block'")
367(defun org-babel-named-src-block-regexp-for-name (name)
368 "This generates a regexp used to match a src block named NAME."
369 (concat org-babel-src-name-regexp (regexp-quote name) "[ \t\n]*"
370 (substring org-babel-src-block-regexp 1)))
371
372;;; functions
373(defvar call-process-region)
374;;;###autoload
afe98dfa 375
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376(defun org-babel-execute-src-block (&optional arg info params)
377 "Execute the current source code block.
378Insert the results of execution into the buffer. Source code
379execution and the collection and formatting of results can be
380controlled through a variety of header arguments.
381
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382With prefix argument ARG, force re-execution even if a an
383existing result cached in the buffer would otherwise have been
384returned.
385
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386Optionally supply a value for INFO in the form returned by
387`org-babel-get-src-block-info'.
388
389Optionally supply a value for PARAMS which will be merged with
390the header arguments specified at the front of the source code
391block."
392 (interactive)
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393 (let ((info (or info (org-babel-get-src-block-info))))
394 (when (org-babel-confirm-evaluate info)
395 (let* ((lang (nth 0 info))
396 (params (if params
397 (org-babel-process-params
398 (org-babel-merge-params (nth 2 info) params))
399 (nth 2 info)))
400 (cache? (and (not arg) (cdr (assoc :cache params))
401 (string= "yes" (cdr (assoc :cache params)))))
402 (result-params (cdr (assoc :result-params params)))
403 (new-hash (when cache? (org-babel-sha1-hash info)))
3ab2c837 404 (old-hash (when cache? (org-babel-current-result-hash)))
afe98dfa 405 (body (setf (nth 1 info)
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406 (let ((noweb (cdr (assoc :noweb params))))
407 (if (and noweb
408 (or (string= "yes" noweb)
409 (string= "tangle" noweb)))
410 (org-babel-expand-noweb-references info)
411 (nth 1 info)))))
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412 (dir (cdr (assoc :dir params)))
413 (default-directory
414 (or (and dir (file-name-as-directory dir)) default-directory))
415 (org-babel-call-process-region-original
416 (if (boundp 'org-babel-call-process-region-original)
417 org-babel-call-process-region-original
418 (symbol-function 'call-process-region)))
419 (indent (car (last info)))
3ab2c837 420 result cmd)
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421 (unwind-protect
422 (flet ((call-process-region (&rest args)
acedf35c 423 (apply 'org-babel-tramp-handle-call-process-region args)))
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424 (flet ((lang-check (f)
425 (let ((f (intern (concat "org-babel-execute:" f))))
426 (when (fboundp f) f))))
427 (setq cmd
428 (or (lang-check lang)
429 (lang-check (symbol-name
430 (cdr (assoc lang org-src-lang-modes))))
431 (error "No org-babel-execute function for %s!" lang))))
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432 (if (and (not arg) new-hash (equal new-hash old-hash))
433 (save-excursion ;; return cached result
434 (goto-char (org-babel-where-is-src-block-result nil info))
435 (end-of-line 1) (forward-char 1)
436 (setq result (org-babel-read-result))
437 (message (replace-regexp-in-string
438 "%" "%%" (format "%S" result))) result)
439 (message "executing %s code block%s..."
440 (capitalize lang)
441 (if (nth 4 info) (format " (%s)" (nth 4 info)) ""))
442 (setq result
443 ((lambda (result)
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444 (if (and (eq (cdr (assoc :result-type params)) 'value)
445 (or (member "vector" result-params)
446 (member "table" result-params))
447 (not (listp result)))
448 (list (list result)) result))
afe98dfa 449 (funcall cmd body params)))
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450 ;; if non-empty result and :file then write to :file
451 (when (cdr (assoc :file params))
452 (when result
453 (with-temp-file (cdr (assoc :file params))
454 (insert
455 (org-babel-format-result
456 result (cdr (assoc :sep (nth 2 info)))))))
457 (setq result (cdr (assoc :file params))))
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458 (org-babel-insert-result
459 result result-params info new-hash indent lang)
460 (run-hooks 'org-babel-after-execute-hook)
461 result))
462 (setq call-process-region 'org-babel-call-process-region-original))))))
463
464(defun org-babel-expand-body:generic (body params &optional var-lines)
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465 "Expand BODY with PARAMS.
466Expand a block of code with org-babel according to it's header
467arguments. This generic implementation of body expansion is
468called for languages which have not defined their own specific
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469org-babel-expand-body:lang function."
470 (mapconcat #'identity (append var-lines (list body)) "\n"))
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471
472;;;###autoload
473(defun org-babel-expand-src-block (&optional arg info params)
474 "Expand the current source code block.
475Expand according to the source code block's header
476arguments and pop open the results in a preview buffer."
477 (interactive)
478 (let* ((info (or info (org-babel-get-src-block-info)))
479 (lang (nth 0 info))
480 (params (setf (nth 2 info)
481 (sort (org-babel-merge-params (nth 2 info) params)
482 (lambda (el1 el2) (string< (symbol-name (car el1))
afe98dfa 483 (symbol-name (car el2)))))))
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484 (body (setf (nth 1 info)
485 (if (and (cdr (assoc :noweb params))
486 (string= "yes" (cdr (assoc :noweb params))))
487 (org-babel-expand-noweb-references info) (nth 1 info))))
afe98dfa 488 (expand-cmd (intern (concat "org-babel-expand-body:" lang)))
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489 (assignments-cmd (intern (concat "org-babel-variable-assignments:"
490 lang)))
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491 (expanded
492 (if (fboundp expand-cmd) (funcall expand-cmd body params)
493 (org-babel-expand-body:generic
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494 body params (and (fboundp assignments-cmd)
495 (funcall assignments-cmd params))))))
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496 (org-edit-src-code
497 nil expanded (concat "*Org-Babel Preview " (buffer-name) "[ " lang " ]*"))))
498
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499(defun org-babel-edit-distance (s1 s2)
500 "Return the edit (levenshtein) distance between strings S1 S2."
501 (let* ((l1 (length s1))
502 (l2 (length s2))
503 (dist (map 'vector (lambda (_) (make-vector (1+ l2) nil))
504 (number-sequence 1 (1+ l1)))))
505 (flet ((in (i j) (aref (aref dist i) j))
506 (mmin (&rest lst) (apply #'min (remove nil lst))))
507 (setf (aref (aref dist 0) 0) 0)
508 (dolist (i (number-sequence 1 l1))
509 (dolist (j (number-sequence 1 l2))
510 (setf (aref (aref dist i) j)
511 (+ (if (equal (aref s1 (1- i)) (aref s2 (1- j))) 0 1)
512 (mmin (in (1- i) j) (in i (1- j)) (in (1- i) (1- j)))))))
513 (in l1 l2))))
514
515;;;###autoload
516(defun org-babel-check-src-block ()
517 "Check for misspelled header arguments in the current code block."
518 (interactive)
519 ;; TODO: report malformed code block
520 ;; TODO: report incompatible combinations of header arguments
521 (let ((too-close 2)) ;; <- control closeness to report potential match
522 (dolist (header (mapcar (lambda (arg) (substring (symbol-name (car arg)) 1))
523 (and (org-babel-where-is-src-block-head)
524 (org-babel-parse-header-arguments
525 (org-babel-clean-text-properties
526 (match-string 4))))))
527 (dolist (name (mapcar #'symbol-name org-babel-header-arg-names))
528 (when (and (not (string= header name))
529 (<= (org-babel-edit-distance header name) too-close))
530 (error "supplied header \"%S\" is suspiciously close to \"%S\""
531 header name))))
532 (message "No suspicious header arguments found.")))
533
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534;;;###autoload
535(defun org-babel-load-in-session (&optional arg info)
536 "Load the body of the current source-code block.
537Evaluate the header arguments for the source block before
538entering the session. After loading the body this pops open the
539session."
540 (interactive)
541 (let* ((info (or info (org-babel-get-src-block-info)))
542 (lang (nth 0 info))
86fbb8ca 543 (params (nth 2 info))
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544 (body (setf (nth 1 info)
545 (if (and (cdr (assoc :noweb params))
546 (string= "yes" (cdr (assoc :noweb params))))
547 (org-babel-expand-noweb-references info)
548 (nth 1 info))))
86fbb8ca 549 (session (cdr (assoc :session params)))
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550 (dir (cdr (assoc :dir params)))
551 (default-directory
552 (or (and dir (file-name-as-directory dir)) default-directory))
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553 (cmd (intern (concat "org-babel-load-session:" lang))))
554 (unless (fboundp cmd)
555 (error "No org-babel-load-session function for %s!" lang))
556 (pop-to-buffer (funcall cmd session body params))
557 (end-of-line 1)))
558
559;;;###autoload
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560(defun org-babel-initiate-session (&optional arg info)
561 "Initiate session for current code block.
562If called with a prefix argument then resolve any variable
563references in the header arguments and assign these variables in
564the session. Copy the body of the code block to the kill ring."
565 (interactive "P")
566 (let* ((info (or info (org-babel-get-src-block-info (not arg))))
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567 (lang (nth 0 info))
568 (body (nth 1 info))
569 (params (nth 2 info))
570 (session (cdr (assoc :session params)))
571 (dir (cdr (assoc :dir params)))
572 (default-directory
573 (or (and dir (file-name-as-directory dir)) default-directory))
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574 (init-cmd (intern (format "org-babel-%s-initiate-session" lang)))
575 (prep-cmd (intern (concat "org-babel-prep-session:" lang))))
576 (if (and (stringp session) (string= session "none"))
577 (error "This block is not using a session!"))
578 (unless (fboundp init-cmd)
86fbb8ca 579 (error "No org-babel-initiate-session function for %s!" lang))
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580 (with-temp-buffer (insert (org-babel-trim body))
581 (copy-region-as-kill (point-min) (point-max)))
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582 (when arg
583 (unless (fboundp prep-cmd)
584 (error "No org-babel-prep-session function for %s!" lang))
585 (funcall prep-cmd session params))
586 (funcall init-cmd session params)))
587
588;;;###autoload
589(defun org-babel-switch-to-session (&optional arg info)
590 "Switch to the session of the current code block.
591Uses `org-babel-initiate-session' to start the session. If called
592with a prefix argument then this is passed on to
593`org-babel-initiate-session'."
594 (interactive "P")
595 (pop-to-buffer (org-babel-initiate-session arg info))
596 (end-of-line 1))
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597
598(defalias 'org-babel-pop-to-session 'org-babel-switch-to-session)
599
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600;;;###autoload
601(defun org-babel-switch-to-session-with-code (&optional arg info)
602 "Switch to code buffer and display session."
603 (interactive "P")
604 (flet ((swap-windows
605 ()
606 (let ((other-window-buffer (window-buffer (next-window))))
607 (set-window-buffer (next-window) (current-buffer))
608 (set-window-buffer (selected-window) other-window-buffer))
609 (other-window 1)))
610 (let ((info (org-babel-get-src-block-info))
611 (org-src-window-setup 'reorganize-frame))
612 (save-excursion
613 (org-babel-switch-to-session arg info))
614 (org-edit-src-code))
615 (swap-windows)))
616
617(defmacro org-babel-do-in-edit-buffer (&rest body)
618 "Evaluate BODY in edit buffer if there is a code block at point.
619Return t if a code block was found at point, nil otherwise."
620 `(let ((org-src-window-setup 'switch-invisibly))
621 (when (and (org-babel-where-is-src-block-head)
3ab2c837 622 (org-edit-src-code nil nil nil))
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623 (unwind-protect (progn ,@body)
624 (if (org-bound-and-true-p org-edit-src-from-org-mode)
625 (org-edit-src-exit)))
626 t)))
627
628(defun org-babel-do-key-sequence-in-edit-buffer (key)
629 "Read key sequence and execute the command in edit buffer.
630Enter a key sequence to be executed in the language major-mode
631edit buffer. For example, TAB will alter the contents of the
632Org-mode code block according to the effect of TAB in the
633language major-mode buffer. For languages that support
634interactive sessions, this can be used to send code from the Org
635buffer to the session for evaluation using the native major-mode
636evaluation mechanisms."
637 (interactive "kEnter key-sequence to execute in edit buffer: ")
638 (org-babel-do-in-edit-buffer
639 (call-interactively
640 (key-binding (or key (read-key-sequence nil))))))
641
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642(defvar org-bracket-link-regexp)
643;;;###autoload
644(defun org-babel-open-src-block-result (&optional re-run)
645 "If `point' is on a src block then open the results of the
646source code block, otherwise return nil. With optional prefix
647argument RE-RUN the source-code block is evaluated even if
648results already exist."
649 (interactive "P")
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650 (let ((info (org-babel-get-src-block-info)))
651 (when info
652 (save-excursion
653 ;; go to the results, if there aren't any then run the block
654 (goto-char (or (and (not re-run) (org-babel-where-is-src-block-result))
655 (progn (org-babel-execute-src-block)
656 (org-babel-where-is-src-block-result))))
657 (end-of-line 1)
658 (while (looking-at "[\n\r\t\f ]") (forward-char 1))
659 ;; open the results
660 (if (looking-at org-bracket-link-regexp)
661 ;; file results
662 (org-open-at-point)
663 (let ((r (org-babel-format-result
664 (org-babel-read-result) (cdr (assoc :sep (nth 2 info))))))
665 (pop-to-buffer (get-buffer-create "*Org-Babel Results*"))
666 (delete-region (point-min) (point-max))
667 (insert r)))
668 t))))
86fbb8ca 669
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670;;;###autoload
671(defmacro org-babel-map-src-blocks (file &rest body)
672 "Evaluate BODY forms on each source-block in FILE.
673If FILE is nil evaluate BODY forms on source blocks in current
674buffer. During evaluation of BODY the following local variables
675are set relative to the currently matched code block.
676
677full-block ------- string holding the entirety of the code block
678beg-block -------- point at the beginning of the code block
679end-block -------- point at the end of the matched code block
680lang ------------- string holding the language of the code block
681beg-lang --------- point at the beginning of the lang
682end-lang --------- point at the end of the lang
683switches --------- string holding the switches
684beg-switches ----- point at the beginning of the switches
685end-switches ----- point at the end of the switches
686header-args ------ string holding the header-args
687beg-header-args -- point at the beginning of the header-args
688end-header-args -- point at the end of the header-args
689body ------------- string holding the body of the code block
690beg-body --------- point at the beginning of the body
691end-body --------- point at the end of the body"
692 (declare (indent 1))
693 (let ((tempvar (make-symbol "file")))
694 `(let* ((,tempvar ,file)
695 (visited-p (or (null ,tempvar)
696 (get-file-buffer (expand-file-name ,tempvar))))
697 (point (point)) to-be-removed)
698 (save-window-excursion
699 (when ,tempvar (find-file ,tempvar))
700 (setq to-be-removed (current-buffer))
701 (goto-char (point-min))
702 (while (re-search-forward org-babel-src-block-regexp nil t)
703 (goto-char (match-beginning 0))
704 (let ((full-block (match-string 0))
705 (beg-block (match-beginning 0))
706 (end-block (match-end 0))
707 (lang (match-string 2))
708 (beg-lang (match-beginning 2))
709 (end-lang (match-end 2))
710 (switches (match-string 3))
711 (beg-switches (match-beginning 3))
712 (end-switches (match-end 3))
713 (header-args (match-string 4))
714 (beg-header-args (match-beginning 4))
715 (end-header-args (match-end 4))
716 (body (match-string 5))
717 (beg-body (match-beginning 5))
718 (end-body (match-end 5)))
719 ,@body
720 (goto-char end-block))))
721 (unless visited-p (kill-buffer to-be-removed))
722 (goto-char point))))
723
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724;;;###autoload
725(defmacro org-babel-map-inline-src-blocks (file &rest body)
726 "Evaluate BODY forms on each inline source-block in FILE.
727If FILE is nil evaluate BODY forms on source blocks in current
728buffer."
729 (declare (indent 1))
730 (let ((tempvar (make-symbol "file")))
731 `(let* ((,tempvar ,file)
732 (visited-p (or (null ,tempvar)
733 (get-file-buffer (expand-file-name ,tempvar))))
734 (point (point)) to-be-removed)
735 (save-window-excursion
736 (when ,tempvar (find-file ,tempvar))
737 (setq to-be-removed (current-buffer))
738 (goto-char (point-min))
739 (while (re-search-forward org-babel-inline-src-block-regexp nil t)
740 (goto-char (match-beginning 1))
741 (save-match-data ,@body)
742 (goto-char (match-end 0))))
743 (unless visited-p (kill-buffer to-be-removed))
744 (goto-char point))))
745
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746;;;###autoload
747(defun org-babel-execute-buffer (&optional arg)
748 "Execute source code blocks in a buffer.
749Call `org-babel-execute-src-block' on every source block in
750the current buffer."
751 (interactive "P")
3ab2c837 752 (org-babel-eval-wipe-error-buffer)
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753 (org-save-outline-visibility t
754 (org-babel-map-src-blocks nil
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755 (org-babel-execute-src-block arg))
756 (org-babel-map-inline-src-blocks nil
afe98dfa 757 (org-babel-execute-src-block arg))))
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758
759;;;###autoload
760(defun org-babel-execute-subtree (&optional arg)
761 "Execute source code blocks in a subtree.
762Call `org-babel-execute-src-block' on every source block in
763the current subtree."
764 (interactive "P")
765 (save-restriction
766 (save-excursion
767 (org-narrow-to-subtree)
afe98dfa 768 (org-babel-execute-buffer arg)
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769 (widen))))
770
771;;;###autoload
772(defun org-babel-sha1-hash (&optional info)
773 "Generate an sha1 hash based on the value of info."
774 (interactive)
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775 (let ((print-level nil)
776 (info (or info (org-babel-get-src-block-info))))
777 (setf (nth 2 info)
778 (sort (copy-sequence (nth 2 info))
779 (lambda (a b) (string< (car a) (car b)))))
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780 (labels ((rm (lst)
781 (dolist (p '("replace" "silent" "append" "prepend"))
782 (setq lst (remove p lst)))
783 lst)
784 (norm (arg)
785 (let ((v (if (and (listp (cdr arg)) (null (cddr arg)))
786 (copy-seq (cdr arg))
787 (cdr arg))))
788 (when (and v (not (and (sequencep v)
789 (not (consp v))
790 (= (length v) 0))))
791 (cond
792 ((and (listp v) ; lists are sorted
793 (member (car arg) '(:result-params)))
794 (sort (rm v) #'string<))
795 ((and (stringp v) ; strings are sorted
796 (member (car arg) '(:results :exports)))
797 (mapconcat #'identity (sort (rm (split-string v))
798 #'string<) " "))
799 (t v))))))
800 ((lambda (hash)
801 (when (org-called-interactively-p 'interactive) (message hash)) hash)
802 (let ((it (format "%s-%s"
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803 (mapconcat
804 #'identity
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805 (delq nil (mapcar (lambda (arg)
806 (let ((normalized (norm arg)))
807 (when normalized
808 (format "%S" normalized))))
809 (nth 2 info))) ":")
810 (nth 1 info))))
811 (sha1 it))))))
812
813(defun org-babel-current-result-hash ()
86fbb8ca 814 "Return the in-buffer hash associated with INFO."
3ab2c837 815 (org-babel-where-is-src-block-result)
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816 (org-babel-clean-text-properties (match-string 3)))
817
818(defun org-babel-hide-hash ()
819 "Hide the hash in the current results line.
820Only the initial `org-babel-hash-show' characters of the hash
821will remain visible."
822 (add-to-invisibility-spec '(org-babel-hide-hash . t))
823 (save-excursion
824 (when (and (re-search-forward org-babel-result-regexp nil t)
825 (match-string 3))
826 (let* ((start (match-beginning 3))
827 (hide-start (+ org-babel-hash-show start))
828 (end (match-end 3))
829 (hash (match-string 3))
830 ov1 ov2)
831 (setq ov1 (make-overlay start hide-start))
832 (setq ov2 (make-overlay hide-start end))
833 (overlay-put ov2 'invisible 'org-babel-hide-hash)
834 (overlay-put ov1 'babel-hash hash)))))
835
836(defun org-babel-hide-all-hashes ()
837 "Hide the hash in the current buffer.
838Only the initial `org-babel-hash-show' characters of each hash
839will remain visible. This function should be called as part of
840the `org-mode-hook'."
841 (save-excursion
842 (while (re-search-forward org-babel-result-regexp nil t)
843 (goto-char (match-beginning 0))
844 (org-babel-hide-hash)
845 (goto-char (match-end 0)))))
846(add-hook 'org-mode-hook 'org-babel-hide-all-hashes)
847
848(defun org-babel-hash-at-point (&optional point)
849 "Return the value of the hash at POINT.
850The hash is also added as the last element of the kill ring.
851This can be called with C-c C-c."
852 (interactive)
853 (let ((hash (car (delq nil (mapcar
854 (lambda (ol) (overlay-get ol 'babel-hash))
855 (overlays-at (or point (point))))))))
856 (when hash (kill-new hash) (message hash))))
857(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-hash-at-point)
858
859(defun org-babel-result-hide-spec ()
860 "Hide portions of results lines.
861Add `org-babel-hide-result' as an invisibility spec for hiding
862portions of results lines."
863 (add-to-invisibility-spec '(org-babel-hide-result . t)))
864(add-hook 'org-mode-hook 'org-babel-result-hide-spec)
865
866(defvar org-babel-hide-result-overlays nil
867 "Overlays hiding results.")
868
869(defun org-babel-result-hide-all ()
870 "Fold all results in the current buffer."
871 (interactive)
872 (org-babel-show-result-all)
873 (save-excursion
874 (while (re-search-forward org-babel-result-regexp nil t)
875 (save-excursion (goto-char (match-beginning 0))
876 (org-babel-hide-result-toggle-maybe)))))
877
878(defun org-babel-show-result-all ()
879 "Unfold all results in the current buffer."
880 (mapc 'delete-overlay org-babel-hide-result-overlays)
881 (setq org-babel-hide-result-overlays nil))
882
883;;;###autoload
884(defun org-babel-hide-result-toggle-maybe ()
885 "Toggle visibility of result at point."
886 (interactive)
887 (let ((case-fold-search t))
888 (if (save-excursion
889 (beginning-of-line 1)
890 (looking-at org-babel-result-regexp))
891 (progn (org-babel-hide-result-toggle)
892 t) ;; to signal that we took action
893 nil))) ;; to signal that we did not
894
895(defun org-babel-hide-result-toggle (&optional force)
896 "Toggle the visibility of the current result."
897 (interactive)
898 (save-excursion
899 (beginning-of-line)
900 (if (re-search-forward org-babel-result-regexp nil t)
901 (let ((start (progn (beginning-of-line 2) (- (point) 1)))
902 (end (progn (goto-char (- (org-babel-result-end) 1)) (point)))
903 ov)
904 (if (memq t (mapcar (lambda (overlay)
905 (eq (overlay-get overlay 'invisible)
906 'org-babel-hide-result))
907 (overlays-at start)))
908 (if (or (not force) (eq force 'off))
909 (mapc (lambda (ov)
910 (when (member ov org-babel-hide-result-overlays)
911 (setq org-babel-hide-result-overlays
912 (delq ov org-babel-hide-result-overlays)))
913 (when (eq (overlay-get ov 'invisible)
914 'org-babel-hide-result)
915 (delete-overlay ov)))
916 (overlays-at start)))
917 (setq ov (make-overlay start end))
918 (overlay-put ov 'invisible 'org-babel-hide-result)
919 ;; make the block accessible to isearch
920 (overlay-put
921 ov 'isearch-open-invisible
922 (lambda (ov)
923 (when (member ov org-babel-hide-result-overlays)
924 (setq org-babel-hide-result-overlays
925 (delq ov org-babel-hide-result-overlays)))
926 (when (eq (overlay-get ov 'invisible)
927 'org-babel-hide-result)
928 (delete-overlay ov))))
929 (push ov org-babel-hide-result-overlays)))
930 (error "Not looking at a result line"))))
931
932;; org-tab-after-check-for-cycling-hook
933(add-hook 'org-tab-first-hook 'org-babel-hide-result-toggle-maybe)
934;; Remove overlays when changing major mode
935(add-hook 'org-mode-hook
936 (lambda () (org-add-hook 'change-major-mode-hook
afe98dfa 937 'org-babel-show-result-all 'append 'local)))
86fbb8ca 938
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939(defvar org-file-properties)
940(defun org-babel-params-from-properties (&optional lang)
941 "Retrieve parameters specified as properties.
942Return an association list of any source block params which
943may be specified in the properties of the current outline entry."
944 (save-match-data
945 (let (val sym)
946 (delq nil
947 (mapcar
948 (lambda (header-arg)
949 (and (setq val
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950 (or (org-entry-get (point) header-arg t)
951 (org-entry-get (point) (concat ":" header-arg) t)))
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952 (cons (intern (concat ":" header-arg))
953 (org-babel-read val))))
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954 (mapcar
955 'symbol-name
956 (append
957 org-babel-header-arg-names
958 (progn
959 (setq sym (intern (concat "org-babel-header-arg-names:" lang)))
960 (and (boundp sym) (eval sym))))))))))
961
962(defun org-babel-params-from-buffer ()
963 "Retrieve per-buffer parameters.
964 Return an association list of any source block params which
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965may be specified in the current buffer."
966 (let (local-properties)
967 (save-match-data
968 (save-excursion
969 (save-restriction
970 (widen)
971 (goto-char (point-min))
972 (while (re-search-forward
973 (org-make-options-regexp (list "BABEL" "PROPERTIES")) nil t)
974 (setq local-properties
975 (org-babel-merge-params
976 local-properties
977 (org-babel-parse-header-arguments
978 (org-match-string-no-properties 2)))))
979 local-properties)))))
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980
981(defvar org-src-preserve-indentation)
982(defun org-babel-parse-src-block-match ()
983 "Parse the results from a match of the `org-babel-src-block-regexp'."
984 (let* ((block-indentation (length (match-string 1)))
985 (lang (org-babel-clean-text-properties (match-string 2)))
986 (lang-headers (intern (concat "org-babel-default-header-args:" lang)))
987 (switches (match-string 3))
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988 (body (org-babel-clean-text-properties
989 (let* ((body (match-string 5))
990 (sub-length (- (length body) 1)))
991 (if (string= "\n" (substring body sub-length))
992 (substring body 0 sub-length)
993 body))))
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994 (preserve-indentation (or org-src-preserve-indentation
995 (string-match "-i\\>" switches))))
996 (list lang
997 ;; get block body less properties, protective commas, and indentation
998 (with-temp-buffer
999 (save-match-data
1000 (insert (org-babel-strip-protective-commas body))
1001 (unless preserve-indentation (org-do-remove-indentation))
1002 (buffer-string)))
1003 (org-babel-merge-params
1004 org-babel-default-header-args
1005 (org-babel-params-from-buffer)
1006 (org-babel-params-from-properties lang)
1007 (if (boundp lang-headers) (eval lang-headers) nil)
1008 (org-babel-parse-header-arguments
1009 (org-babel-clean-text-properties (or (match-string 4) ""))))
1010 switches
1011 block-indentation)))
1012
1013(defun org-babel-parse-inline-src-block-match ()
1014 "Parse the results from a match of the `org-babel-inline-src-block-regexp'."
1015 (let* ((lang (org-babel-clean-text-properties (match-string 2)))
1016 (lang-headers (intern (concat "org-babel-default-header-args:" lang))))
1017 (list lang
1018 (org-babel-strip-protective-commas
1019 (org-babel-clean-text-properties (match-string 5)))
1020 (org-babel-merge-params
1021 org-babel-default-inline-header-args
1022 (org-babel-params-from-buffer)
1023 (org-babel-params-from-properties lang)
1024 (if (boundp lang-headers) (eval lang-headers) nil)
1025 (org-babel-parse-header-arguments
1026 (org-babel-clean-text-properties (or (match-string 4) "")))))))
1027
1028(defun org-babel-parse-header-arguments (arg-string)
1029 "Parse a string of header arguments returning an alist."
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1030 (when (> (length arg-string) 0)
1031 (delq nil
1032 (mapcar
1033 (lambda (arg)
1034 (if (string-match
1035 "\\([^ \f\t\n\r\v]+\\)[ \f\t\n\r\v]+\\([^ \f\t\n\r\v]+.*\\)"
1036 arg)
1037 (cons (intern (match-string 1 arg))
1038 (org-babel-read (org-babel-chomp (match-string 2 arg))))
1039 (cons (intern (org-babel-chomp arg)) nil)))
1040 (let ((balance 0) (partial nil) (lst nil) (last 0))
1041 (mapc (lambda (ch) ; split on [] balanced instances of [ \t]:
1042 (setq balance (+ balance
1043 (cond ((equal 91 ch) 1)
1044 ((equal 93 ch) -1)
1045 (t 0))))
1046 (setq partial (cons ch partial))
1047 (when (and (= ch 58) (= balance 0)
1048 (or (= last 32) (= last 9)))
1049 (setq lst (cons (apply #'string (nreverse (cddr partial)))
1050 lst))
1051 (setq partial (list ch)))
1052 (setq last ch))
1053 (string-to-list arg-string))
1054 (nreverse (cons (apply #'string (nreverse partial)) lst)))))))
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1055
1056(defun org-babel-process-params (params)
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1057 "Expand variables in PARAMS and add summary parameters."
1058 (let* ((vars-and-names (org-babel-disassemble-tables
1059 (mapcar (lambda (el)
1060 (if (consp (cdr el))
1061 (cdr el) (org-babel-ref-parse (cdr el))))
1062 (org-babel-get-header params :var))
1063 (cdr (assoc :hlines params))
1064 (cdr (assoc :colnames params))
1065 (cdr (assoc :rownames params))))
3ab2c837 1066 (raw-result (or (cdr (assoc :results params)) ""))
afe98dfa 1067 (result-params (append
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1068 (split-string (if (stringp raw-result)
1069 raw-result
1070 (eval raw-result)))
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1071 (cdr (assoc :result-params params)))))
1072 (append
1073 (mapcar (lambda (var) (cons :var var)) (car vars-and-names))
1074 (list
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1075 (cons :colname-names (or (cdr (assoc :colname-names params))
1076 (cadr vars-and-names)))
1077 (cons :rowname-names (or (cdr (assoc :rowname-names params))
1078 (caddr vars-and-names)))
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1079 (cons :result-params result-params)
1080 (cons :result-type (cond ((member "output" result-params) 'output)
1081 ((member "value" result-params) 'value)
1082 (t 'value))))
1083 (org-babel-get-header params :var 'other))))
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1084
1085;; row and column names
1086(defun org-babel-del-hlines (table)
1087 "Remove all 'hlines from TABLE."
1088 (remove 'hline table))
1089
1090(defun org-babel-get-colnames (table)
1091 "Return the column names of TABLE.
1092Return a cons cell, the `car' of which contains the TABLE less
1093colnames, and the `cdr' of which contains a list of the column
1094names."
1095 (if (equal 'hline (nth 1 table))
1096 (cons (cddr table) (car table))
1097 (cons (cdr table) (car table))))
1098
1099(defun org-babel-get-rownames (table)
1100 "Return the row names of TABLE.
1101Return a cons cell, the `car' of which contains the TABLE less
1102colnames, and the `cdr' of which contains a list of the column
1103names. Note: this function removes any hlines in TABLE."
1104 (flet ((trans (table) (apply #'mapcar* #'list table)))
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1105 (let* ((width (apply 'max
1106 (mapcar (lambda (el) (if (listp el) (length el) 0)) table)))
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1107 (table (trans (mapcar (lambda (row)
1108 (if (not (equal row 'hline))
1109 row
1110 (setq row '())
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1111 (dotimes (n width)
1112 (setq row (cons 'hline row)))
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1113 row))
1114 table))))
1115 (cons (mapcar (lambda (row) (if (equal (car row) 'hline) 'hline row))
1116 (trans (cdr table)))
1117 (remove 'hline (car table))))))
1118
1119(defun org-babel-put-colnames (table colnames)
1120 "Add COLNAMES to TABLE if they exist."
1121 (if colnames (apply 'list colnames 'hline table) table))
1122
1123(defun org-babel-put-rownames (table rownames)
1124 "Add ROWNAMES to TABLE if they exist."
1125 (if rownames
1126 (mapcar (lambda (row)
1127 (if (listp row)
1128 (cons (or (pop rownames) "") row)
1129 row)) table)
1130 table))
1131
1132(defun org-babel-pick-name (names selector)
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1133 "Select one out of an alist of row or column names.
1134SELECTOR can be either a list of names in which case those names
1135will be returned directly, or an index into the list NAMES in
1136which case the indexed names will be return."
1137 (if (listp selector)
1138 selector
1139 (when names
1140 (if (and selector (symbolp selector) (not (equal t selector)))
1141 (cdr (assoc selector names))
1142 (if (integerp selector)
1143 (nth (- selector 1) names)
1144 (cdr (car (last names))))))))
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1145
1146(defun org-babel-disassemble-tables (vars hlines colnames rownames)
1147 "Parse tables for further processing.
1148Process the variables in VARS according to the HLINES,
1149ROWNAMES and COLNAMES header arguments. Return a list consisting
1150of the vars, cnames and rnames."
1151 (let (cnames rnames)
1152 (list
1153 (mapcar
1154 (lambda (var)
1155 (when (listp (cdr var))
1156 (when (and (not (equal colnames "no"))
1157 (or colnames (and (equal (nth 1 (cdr var)) 'hline)
1158 (not (member 'hline (cddr (cdr var)))))))
1159 (let ((both (org-babel-get-colnames (cdr var))))
1160 (setq cnames (cons (cons (car var) (cdr both))
1161 cnames))
1162 (setq var (cons (car var) (car both)))))
1163 (when (and rownames (not (equal rownames "no")))
1164 (let ((both (org-babel-get-rownames (cdr var))))
1165 (setq rnames (cons (cons (car var) (cdr both))
1166 rnames))
1167 (setq var (cons (car var) (car both)))))
1168 (when (and hlines (not (equal hlines "yes")))
1169 (setq var (cons (car var) (org-babel-del-hlines (cdr var))))))
1170 var)
1171 vars)
1172 cnames rnames)))
1173
1174(defun org-babel-reassemble-table (table colnames rownames)
1175 "Add column and row names to a table.
1176Given a TABLE and set of COLNAMES and ROWNAMES add the names
1177to the table for reinsertion to org-mode."
1178 (if (listp table)
1179 ((lambda (table)
1180 (if (and colnames (listp (car table)) (= (length (car table))
1181 (length colnames)))
1182 (org-babel-put-colnames table colnames) table))
1183 (if (and rownames (= (length table) (length rownames)))
1184 (org-babel-put-rownames table rownames) table))
1185 table))
1186
1187(defun org-babel-where-is-src-block-head ()
1188 "Find where the current source block begins.
1189Return the point at the beginning of the current source
1190block. Specifically at the beginning of the #+BEGIN_SRC line.
1191If the point is not on a source block then return nil."
1192 (let ((initial (point)) top bottom)
1193 (or
3ab2c837 1194 (save-excursion ;; on a source name line or a #+header line
86fbb8ca 1195 (beginning-of-line 1)
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1196 (and (or (looking-at org-babel-src-name-regexp)
1197 (looking-at org-babel-multi-line-header-regexp))
1198 (progn
1199 (while (and (forward-line 1)
1200 (looking-at org-babel-multi-line-header-regexp)))
1201 (looking-at org-babel-src-block-regexp))
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1202 (point)))
1203 (save-excursion ;; on a #+begin_src line
1204 (beginning-of-line 1)
1205 (and (looking-at org-babel-src-block-regexp)
1206 (point)))
1207 (save-excursion ;; inside a src block
1208 (and
1209 (re-search-backward "^[ \t]*#\\+begin_src" nil t) (setq top (point))
1210 (re-search-forward "^[ \t]*#\\+end_src" nil t) (setq bottom (point))
1211 (< top initial) (< initial bottom)
1212 (progn (goto-char top) (beginning-of-line 1)
1213 (looking-at org-babel-src-block-regexp))
1214 (point))))))
1215
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1216;;;###autoload
1217(defun org-babel-goto-src-block-head ()
1218 "Go to the beginning of the current code block."
1219 (interactive)
1220 ((lambda (head)
1221 (if head (goto-char head) (error "not currently in a code block")))
1222 (org-babel-where-is-src-block-head)))
1223
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1224;;;###autoload
1225(defun org-babel-goto-named-src-block (name)
1226 "Go to a named source-code block."
1227 (interactive
1228 (let ((completion-ignore-case t))
1229 (list (org-icompleting-read "source-block name: "
1230 (org-babel-src-block-names) nil t))))
1231 (let ((point (org-babel-find-named-block name)))
1232 (if point
1233 ;; taken from `org-open-at-point'
1234 (progn (goto-char point) (org-show-context))
1235 (message "source-code block '%s' not found in this buffer" name))))
1236
1237(defun org-babel-find-named-block (name)
1238 "Find a named source-code block.
1239Return the location of the source block identified by source
1240NAME, or nil if no such block exists. Set match data according to
1241org-babel-named-src-block-regexp."
1242 (save-excursion
1243 (let ((case-fold-search t)
1244 (regexp (org-babel-named-src-block-regexp-for-name name)) msg)
1245 (goto-char (point-min))
1246 (when (or (re-search-forward regexp nil t)
1247 (re-search-backward regexp nil t))
1248 (match-beginning 0)))))
1249
1250(defun org-babel-src-block-names (&optional file)
1251 "Returns the names of source blocks in FILE or the current buffer."
1252 (save-excursion
1253 (when file (find-file file)) (goto-char (point-min))
1254 (let (names)
1255 (while (re-search-forward org-babel-src-name-w-name-regexp nil t)
3ab2c837 1256 (setq names (cons (match-string 4) names)))
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1257 names)))
1258
1259;;;###autoload
1260(defun org-babel-goto-named-result (name)
1261 "Go to a named result."
1262 (interactive
1263 (let ((completion-ignore-case t))
1264 (list (org-icompleting-read "source-block name: "
1265 (org-babel-result-names) nil t))))
1266 (let ((point (org-babel-find-named-result name)))
1267 (if point
1268 ;; taken from `org-open-at-point'
1269 (progn (goto-char point) (org-show-context))
1270 (message "result '%s' not found in this buffer" name))))
1271
1272(defun org-babel-find-named-result (name)
1273 "Find a named result.
1274Return the location of the result named NAME in the current
1275buffer or nil if no such result exists."
1276 (save-excursion
1277 (goto-char (point-min))
1278 (when (re-search-forward
1279 (concat org-babel-result-regexp
1280 "[ \t]" (regexp-quote name) "[ \t\n\f\v\r]") nil t)
1281 (beginning-of-line 0) (point))))
1282
1283(defun org-babel-result-names (&optional file)
1284 "Returns the names of results in FILE or the current buffer."
1285 (save-excursion
1286 (when file (find-file file)) (goto-char (point-min))
1287 (let (names)
1288 (while (re-search-forward org-babel-result-w-name-regexp nil t)
3ab2c837 1289 (setq names (cons (match-string 4) names)))
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1290 names)))
1291
1292;;;###autoload
1293(defun org-babel-next-src-block (&optional arg)
1294 "Jump to the next source block.
1295With optional prefix argument ARG, jump forward ARG many source blocks."
1296 (interactive "P")
1297 (when (looking-at org-babel-src-block-regexp) (forward-char 1))
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1298 (condition-case nil
1299 (re-search-forward org-babel-src-block-regexp nil nil (or arg 1))
1300 (error (error "No further code blocks")))
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1301 (goto-char (match-beginning 0)) (org-show-context))
1302
1303;;;###autoload
1304(defun org-babel-previous-src-block (&optional arg)
1305 "Jump to the previous source block.
1306With optional prefix argument ARG, jump backward ARG many source blocks."
1307 (interactive "P")
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1308 (condition-case nil
1309 (re-search-backward org-babel-src-block-regexp nil nil (or arg 1))
1310 (error (error "No previous code blocks")))
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1311 (goto-char (match-beginning 0)) (org-show-context))
1312
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1313(defvar org-babel-load-languages)
1314
1315;;;###autoload
1316(defun org-babel-mark-block ()
1317 "Mark current src block"
1318 (interactive)
1319 ((lambda (head)
1320 (when head
1321 (save-excursion
1322 (goto-char head)
1323 (looking-at org-babel-src-block-regexp))
1324 (push-mark (match-end 5) nil t)
1325 (goto-char (match-beginning 5))))
1326 (org-babel-where-is-src-block-head)))
1327
1328(defun org-babel-demarcate-block (&optional arg)
1329 "Wrap or split the code in the region or on the point.
1330When called from inside of a code block the current block is
1331split. When called from outside of a code block a new code block
1332is created. In both cases if the region is demarcated and if the
1333region is not active then the point is demarcated."
1334 (interactive "P")
1335 (let ((info (org-babel-get-src-block-info 'light))
1336 (stars (concat (make-string (or (org-current-level) 1) ?*) " ")))
1337 (if info
1338 (mapc
1339 (lambda (place)
1340 (save-excursion
1341 (goto-char place)
1342 (let ((lang (nth 0 info))
1343 (indent (make-string (nth 5 info) ? )))
1344 (when (string-match "^[[:space:]]*$"
1345 (buffer-substring (point-at-bol)
1346 (point-at-eol)))
1347 (delete-region (point-at-bol) (point-at-eol)))
1348 (insert (concat (if (looking-at "^") "" "\n")
1349 indent "#+end_src\n"
1350 (if arg stars indent) "\n"
1351 indent "#+begin_src " lang
1352 (if (looking-at "[\n\r]") "" "\n")))))
1353 (move-end-of-line 2))
1354 (sort (if (region-active-p) (list (mark) (point)) (list (point))) #'>))
1355 (let ((start (point))
1356 (lang (org-icompleting-read "Lang: "
1357 (mapcar (lambda (el) (symbol-name (car el)))
1358 org-babel-load-languages)))
1359 (body (delete-and-extract-region
1360 (if (region-active-p) (mark) (point)) (point))))
1361 (insert (concat (if (looking-at "^") "" "\n")
1362 (if arg (concat stars "\n") "")
1363 "#+begin_src " lang "\n"
1364 body
1365 (if (or (= (length body) 0)
1366 (string-match "[\r\n]$" body)) "" "\n")
1367 "#+end_src\n"))
1368 (goto-char start) (move-end-of-line 1)))))
1369
86fbb8ca 1370(defvar org-babel-lob-one-liner-regexp)
3ab2c837 1371(defvar org-babel-inline-lob-one-liner-regexp)
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1372(defun org-babel-where-is-src-block-result (&optional insert info hash indent)
1373 "Find where the current source block results begin.
1374Return the point at the beginning of the result of the current
1375source block. Specifically at the beginning of the results line.
1376If no result exists for this block then create a results line
1377following the source block."
1378 (save-excursion
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1379 (let* ((on-lob-line (save-excursion
1380 (beginning-of-line 1)
1381 (looking-at org-babel-lob-one-liner-regexp)))
1382 (inlinep (save-excursion
1383 (re-search-backward "[ \f\t\n\r\v]" nil t)
1384 (when (looking-at org-babel-inline-src-block-regexp)
1385 (match-end 0))))
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1386 (name (if on-lob-line
1387 (nth 0 (org-babel-lob-get-info))
1388 (nth 4 (or info (org-babel-get-src-block-info)))))
1389 (head (unless on-lob-line (org-babel-where-is-src-block-head)))
1390 found beg end)
1391 (when head (goto-char head))
1392 (setq
1393 found ;; was there a result (before we potentially insert one)
1394 (or
3ab2c837 1395 inlinep
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1396 (and
1397 ;; named results:
1398 ;; - return t if it is found, else return nil
1399 ;; - if it does not need to be rebuilt, then don't set end
1400 ;; - if it does need to be rebuilt then do set end
1401 name (setq beg (org-babel-find-named-result name))
1402 (prog1 beg
1403 (when (and hash (not (string= hash (match-string 3))))
1404 (goto-char beg) (setq end beg) ;; beginning of result
1405 (forward-line 1)
1406 (delete-region end (org-babel-result-end)) nil)))
1407 (and
1408 ;; unnamed results:
1409 ;; - return t if it is found, else return nil
1410 ;; - if it is found, and the hash doesn't match, delete and set end
1411 (or on-lob-line (re-search-forward "^[ \t]*#\\+end_src" nil t))
1412 (progn (end-of-line 1)
1413 (if (eobp) (insert "\n") (forward-char 1))
1414 (setq end (point))
1415 (or (and (not name)
1416 (progn ;; unnamed results line already exists
1417 (re-search-forward "[^ \f\t\n\r\v]" nil t)
1418 (beginning-of-line 1)
1419 (looking-at
1420 (concat org-babel-result-regexp "\n")))
1421 (prog1 (point)
1422 ;; must remove and rebuild if hash!=old-hash
1423 (if (and hash (not (string= hash (match-string 3))))
1424 (prog1 nil
1425 (forward-line 1)
1426 (delete-region
1427 end (org-babel-result-end)))
1428 (setq end nil)))))))))
1429 (if (and insert end)
1430 (progn
1431 (goto-char end)
1432 (unless beg
1433 (if (looking-at "[\n\r]") (forward-char 1) (insert "\n")))
1434 (insert (concat
1435 (if indent
1436 (mapconcat
1437 (lambda (el) " ")
afe98dfa 1438 (org-number-sequence 1 indent) "")
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1439 "")
1440 "#+results"
1441 (when hash (concat "["hash"]"))
1442 ":"
1443 (when name (concat " " name)) "\n"))
1444 (unless beg (insert "\n") (backward-char))
1445 (beginning-of-line 0)
1446 (if hash (org-babel-hide-hash))
1447 (point))
1448 found))))
1449
1450(defvar org-block-regexp)
1451(defun org-babel-read-result ()
1452 "Read the result at `point' into emacs-lisp."
1453 (let ((case-fold-search t) result-string)
1454 (cond
1455 ((org-at-table-p) (org-babel-read-table))
3ab2c837 1456 ((org-at-item-p) (org-babel-read-list))
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1457 ((looking-at org-bracket-link-regexp) (org-babel-read-link))
1458 ((looking-at org-block-regexp) (org-babel-trim (match-string 4)))
1459 ((looking-at "^[ \t]*: ")
1460 (setq result-string
1461 (org-babel-trim
1462 (mapconcat (lambda (line)
1463 (if (and (> (length line) 1)
1464 (string-match "^[ \t]*: \\(.+\\)" line))
1465 (match-string 1 line)
1466 line))
1467 (split-string
1468 (buffer-substring
1469 (point) (org-babel-result-end)) "[\r\n]+")
1470 "\n")))
1471 (or (org-babel-number-p result-string) result-string))
1472 ((looking-at org-babel-result-regexp)
1473 (save-excursion (forward-line 1) (org-babel-read-result))))))
1474
1475(defun org-babel-read-table ()
1476 "Read the table at `point' into emacs-lisp."
1477 (mapcar (lambda (row)
1478 (if (and (symbolp row) (equal row 'hline)) row
3ab2c837 1479 (mapcar (lambda (el) (org-babel-read el 'inhibit-lisp-eval)) row)))
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1480 (org-table-to-lisp)))
1481
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1482(defun org-babel-read-list ()
1483 "Read the list at `point' into emacs-lisp."
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1484 (mapcar (lambda (el) (org-babel-read el 'inhibit-lisp-eval))
1485 (mapcar #'cadr (cdr (org-list-parse-list)))))
acedf35c 1486
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1487(defvar org-link-types-re)
1488(defun org-babel-read-link ()
1489 "Read the link at `point' into emacs-lisp.
1490If the path of the link is a file path it is expanded using
1491`expand-file-name'."
1492 (let* ((case-fold-search t)
1493 (raw (and (looking-at org-bracket-link-regexp)
1494 (org-babel-clean-text-properties (match-string 1))))
1495 (type (and (string-match org-link-types-re raw)
1496 (match-string 1 raw))))
1497 (cond
1498 ((not type) (expand-file-name raw))
1499 ((string= type "file")
1500 (and (string-match "file\\(.*\\):\\(.+\\)" raw)
1501 (expand-file-name (match-string 2 raw))))
1502 (t raw))))
1503
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1504(defun org-babel-format-result (result &optional sep)
1505 "Format RESULT for writing to file."
1506 (flet ((echo-res (result)
1507 (if (stringp result) result (format "%S" result))))
1508 (if (listp result)
1509 ;; table result
1510 (orgtbl-to-generic
1511 result
1512 (list
1513 :sep (or sep "\t")
1514 :fmt 'echo-res))
1515 ;; scalar result
1516 (echo-res result))))
1517
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1518(defun org-babel-insert-result
1519 (result &optional result-params info hash indent lang)
1520 "Insert RESULT into the current buffer.
1521By default RESULT is inserted after the end of the
1522current source block. With optional argument RESULT-PARAMS
1523controls insertion of results in the org-mode file.
1524RESULT-PARAMS can take the following values...
1525
1526replace - (default option) insert results after the source block
1527 replacing any previously inserted results
1528
1529silent -- no results are inserted
1530
1531file ---- the results are interpreted as a file path, and are
1532 inserted into the buffer using the Org-mode file syntax
1533
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1534list ---- the results are interpreted as an Org-mode list.
1535
1536raw ----- results are added directly to the Org-mode file. This
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1537 is a good option if you code block will output org-mode
1538 formatted text.
1539
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1540org ----- similar in effect to raw, only the results are wrapped
1541 in an org code block. Similar to the raw option, on
1542 export the results will be interpreted as org-formatted
1543 text, however by wrapping the results in an org code
1544 block they can be replaced upon re-execution of the
1545 code block.
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1546
1547html ---- results are added inside of a #+BEGIN_HTML block. This
1548 is a good option if you code block will output html
1549 formatted text.
1550
1551latex --- results are added inside of a #+BEGIN_LATEX block.
1552 This is a good option if you code block will output
1553 latex formatted text.
1554
1555code ---- the results are extracted in the syntax of the source
1556 code of the language being evaluated and are added
1557 inside of a #+BEGIN_SRC block with the source-code
1558 language set appropriately. Note this relies on the
1559 optional LANG argument."
1560 (if (stringp result)
1561 (progn
1562 (setq result (org-babel-clean-text-properties result))
1563 (when (member "file" result-params)
1564 (setq result (org-babel-result-to-file result))))
1565 (unless (listp result) (setq result (format "%S" result))))
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1566 (if (and result-params (member "silent" result-params))
1567 (progn
1568 (message (replace-regexp-in-string "%" "%%" (format "%S" result)))
1569 result)
afe98dfa 1570 (save-excursion
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1571 (let* ((inlinep
1572 (save-excursion
1573 (or (= (point) (point-at-bol))
1574 (re-search-backward "[ \f\t\n\r\v]" nil t))
1575 (when (or (looking-at org-babel-inline-src-block-regexp)
1576 (looking-at org-babel-inline-lob-one-liner-regexp))
1577 (goto-char (match-end 0))
1578 (insert (if (listp result) "\n" " "))
1579 (point))))
1580 (existing-result (unless inlinep
1581 (org-babel-where-is-src-block-result
1582 t info hash indent)))
1583 (results-switches
1584 (cdr (assoc :results_switches (nth 2 info))))
1585 beg end)
1586 (when (and (stringp result) ; ensure results end in a newline
1587 (not inlinep)
1588 (> (length result) 0)
1589 (not (or (string-equal (substring result -1) "\n")
1590 (string-equal (substring result -1) "\r"))))
1591 (setq result (concat result "\n")))
afe98dfa 1592 (if (not existing-result)
3ab2c837 1593 (setq beg (or inlinep (point)))
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1594 (goto-char existing-result)
1595 (save-excursion
1596 (re-search-forward "#" nil t)
1597 (setq indent (- (current-column) 1)))
1598 (forward-line 1)
1599 (setq beg (point))
86fbb8ca 1600 (cond
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1601 ((member "replace" result-params)
1602 (delete-region (point) (org-babel-result-end)))
1603 ((member "append" result-params)
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1604 (goto-char (org-babel-result-end)) (setq beg (point-marker)))
1605 ((member "prepend" result-params)))) ; already there
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1606 (setq results-switches
1607 (if results-switches (concat " " results-switches) ""))
acedf35c 1608 ;; insert results based on type
afe98dfa
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1609 (cond
1610 ;; do nothing for an empty result
1611 ((= (length result) 0))
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1612 ;; insert a list if preferred
1613 ((member "list" result-params)
1614 (insert
1615 (org-babel-trim
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1616 (org-list-to-generic
1617 (cons 'unordered
1618 (mapcar
1619 (lambda (el) (list nil (if (stringp el) el (format "%S" el))))
1620 (if (listp result) result (list result))))
1621 '(:splicep nil :istart "- " :iend "\n")))
1622 "\n"))
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1623 ;; assume the result is a table if it's not a string
1624 ((not (stringp result))
acedf35c 1625 (goto-char beg)
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1626 (insert (concat (orgtbl-to-orgtbl
1627 (if (or (eq 'hline (car result))
1628 (and (listp (car result))
1629 (listp (cdr (car result)))))
1630 result (list result))
1631 '(:fmt (lambda (cell) (format "%s" cell)))) "\n"))
1632 (goto-char beg) (when (org-at-table-p) (org-table-align)))
1633 ((member "file" result-params)
1634 (insert result))
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1635 (t (goto-char beg) (insert result)))
1636 (when (listp result) (goto-char (org-table-end)))
1637 (setq end (point-marker))
1638 ;; possibly wrap result
1639 (flet ((wrap (start finish)
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1640 (goto-char beg) (insert (concat start "\n"))
1641 (goto-char end) (insert (concat finish "\n"))
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1642 (setq end (point-marker))))
1643 (cond
1644 ((member "html" result-params)
3ab2c837 1645 (wrap "#+BEGIN_HTML" "#+END_HTML"))
acedf35c 1646 ((member "latex" result-params)
3ab2c837 1647 (wrap "#+BEGIN_LaTeX" "#+END_LaTeX"))
acedf35c 1648 ((member "code" result-params)
3ab2c837 1649 (wrap (format "#+BEGIN_SRC %s%s" (or lang "none") results-switches)
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1650 "#+END_SRC"))
1651 ((member "org" result-params)
3ab2c837 1652 (wrap "#+BEGIN_ORG" "#+END_ORG"))
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1653 ((member "raw" result-params)
1654 (goto-char beg) (if (org-at-table-p) (org-cycle)))
1655 ((member "wrap" result-params)
1656 (when (and (stringp result) (not (member "file" result-params)))
1657 (org-babel-examplize-region beg end results-switches))
3ab2c837 1658 (wrap "#+BEGIN_RESULT" "#+END_RESULT"))
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1659 ((and (stringp result) (not (member "file" result-params)))
1660 (org-babel-examplize-region beg end results-switches)
1661 (setq end (point)))))
afe98dfa 1662 ;; possibly indent the results to match the #+results line
3ab2c837 1663 (when (and (not inlinep) (numberp indent) indent (> indent 0)
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1664 ;; in this case `table-align' does the work for us
1665 (not (and (listp result)
1666 (member "append" result-params))))
1667 (indent-rigidly beg end indent))))
1668 (if (= (length result) 0)
1669 (if (member "value" result-params)
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1670 (message "Code block returned no value.")
1671 (message "Code block produced no output."))
1672 (message "Code block evaluation complete."))))
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1673
1674(defun org-babel-remove-result (&optional info)
1675 "Remove the result of the current source block."
1676 (interactive)
1677 (let ((location (org-babel-where-is-src-block-result nil info)) start)
1678 (when location
1679 (save-excursion
1680 (goto-char location) (setq start (point)) (forward-line 1)
1681 (delete-region start (org-babel-result-end))))))
1682
1683(defun org-babel-result-end ()
1684 "Return the point at the end of the current set of results"
1685 (save-excursion
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1686 (cond
1687 ((org-at-table-p) (progn (goto-char (org-table-end)) (point)))
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1688 ((org-at-item-p) (let* ((struct (org-list-struct))
1689 (prvs (org-list-prevs-alist struct)))
1690 (org-list-get-list-end (point-at-bol) struct prvs)))
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1691 (t
1692 (let ((case-fold-search t)
1693 (blocks-re (regexp-opt
3ab2c837 1694 (list "latex" "html" "example" "src" "result" "org"))))
acedf35c 1695 (if (looking-at (concat "[ \t]*#\\+begin_" blocks-re))
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1696 (progn (re-search-forward (concat "[ \t]*#\\+end_" blocks-re) nil t)
1697 (forward-char 1))
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1698 (while (looking-at "[ \t]*\\(: \\|\\[\\[\\)")
1699 (forward-line 1))))
1700 (point)))))
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1701
1702(defun org-babel-result-to-file (result)
1703 "Convert RESULT into an `org-mode' link.
1704If the `default-directory' is different from the containing
1705file's directory then expand relative links."
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1706 (flet ((cond-exp (file)
1707 (if (and default-directory
1708 buffer-file-name
1709 (not (string= (expand-file-name default-directory)
1710 (expand-file-name
1711 (file-name-directory buffer-file-name)))))
1712 (expand-file-name file default-directory)
1713 file)))
1714 (if (stringp result)
1715 (format "[[file:%s]]" (cond-exp result))
1716 (when (and (listp result) (= 2 (length result))
1717 (stringp (car result)) (stringp (cadr result)))
1718 (format "[[file:%s][%s]]" (car result) (cadr result))))))
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1719
1720(defun org-babel-examplize-region (beg end &optional results-switches)
3ab2c837 1721 "Comment out region using the inline '==' or ': ' org example quote."
86fbb8ca 1722 (interactive "*r")
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1723 (flet ((chars-between (b e) (string-match "[\\S]" (buffer-substring b e))))
1724 (if (or (chars-between (save-excursion (goto-char beg) (point-at-bol)) beg)
1725 (chars-between end (save-excursion (goto-char end) (point-at-eol))))
1726 (save-excursion
1727 (goto-char beg)
1728 (insert (format "=%s=" (prog1 (buffer-substring beg end)
1729 (delete-region beg end)))))
1730 (let ((size (count-lines beg end)))
1731 (save-excursion
1732 (cond ((= size 0)) ; do nothing for an empty result
1733 ((< size org-babel-min-lines-for-block-output)
1734 (goto-char beg)
1735 (dotimes (n size)
1736 (beginning-of-line 1) (insert ": ") (forward-line 1)))
1737 (t
1738 (goto-char beg)
1739 (insert (if results-switches
1740 (format "#+begin_example%s\n" results-switches)
1741 "#+begin_example\n"))
1742 (if (markerp end) (goto-char end) (forward-char (- end beg)))
1743 (insert "#+end_example\n"))))))))
86fbb8ca 1744
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1745(defun org-babel-update-block-body (new-body)
1746 "Update the body of the current code block to NEW-BODY."
1747 (if (not (org-babel-where-is-src-block-head))
1748 (error "not in source block")
1749 (save-match-data
3ab2c837 1750 (replace-match (concat (org-babel-trim new-body) "\n") nil t nil 5))
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1751 (indent-rigidly (match-beginning 5) (match-end 5) 2)))
1752
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1753(defun org-babel-merge-params (&rest plists)
1754 "Combine all parameter association lists in PLISTS.
3ab2c837 1755Later elements of PLISTS override the values of previous elements.
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1756This takes into account some special considerations for certain
1757parameters when merging lists."
1758 (let ((results-exclusive-groups
3ab2c837 1759 '(("file" "list" "vector" "table" "scalar" "verbatim" "raw" "org"
acedf35c 1760 "html" "latex" "code" "pp" "wrap")
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1761 ("replace" "silent" "append" "prepend")
1762 ("output" "value")))
1763 (exports-exclusive-groups
1764 '(("code" "results" "both" "none")))
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1765 (variable-index 0)
1766 params results exports tangle noweb cache vars shebang comments padline)
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1767 (flet ((e-merge (exclusive-groups &rest result-params)
1768 ;; maintain exclusivity of mutually exclusive parameters
1769 (let (output)
1770 (mapc (lambda (new-params)
1771 (mapc (lambda (new-param)
1772 (mapc (lambda (exclusive-group)
1773 (when (member new-param exclusive-group)
1774 (mapcar (lambda (excluded-param)
1775 (setq output
1776 (delete
1777 excluded-param
1778 output)))
1779 exclusive-group)))
1780 exclusive-groups)
1781 (setq output (org-uniquify
1782 (cons new-param output))))
1783 new-params))
1784 result-params)
1785 output)))
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1786 (mapc
1787 (lambda (plist)
1788 (mapc
1789 (lambda (pair)
1790 (case (car pair)
1791 (:var
1792 (let ((name (if (listp (cdr pair))
1793 (cadr pair)
1794 (and (string-match "^\\([^= \f\t\n\r\v]+\\)[ \t]*="
1795 (cdr pair))
1796 (intern (match-string 1 (cdr pair)))))))
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1797 (if name
1798 (setq vars
1799 (append
1800 (if (member name (mapcar #'car vars))
1801 (delq nil
1802 (mapcar
1803 (lambda (p)
1804 (unless (equal (car p) name) p))
1805 vars))
1806 vars)
1807 (list (cons name pair))))
1808 ;; if no name is given, then assign to variables in order
1809 (prog1 (setf (cddr (nth variable-index vars))
1810 (concat (symbol-name
1811 (car (nth variable-index vars)))
1812 "=" (cdr pair)))
1813 (incf variable-index)))))
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1814 (:results
1815 (setq results (e-merge results-exclusive-groups
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1816 results
1817 (split-string
1818 (let ((r (cdr pair)))
1819 (if (stringp r) r (eval r)))))))
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1820 (:file
1821 (when (cdr pair)
1822 (setq results (e-merge results-exclusive-groups
1823 results '("file")))
1824 (unless (or (member "both" exports)
1825 (member "none" exports)
1826 (member "code" exports))
1827 (setq exports (e-merge exports-exclusive-groups
1828 exports '("results"))))
1829 (setq params (cons pair (assq-delete-all (car pair) params)))))
1830 (:exports
1831 (setq exports (e-merge exports-exclusive-groups
1832 exports (split-string (cdr pair)))))
1833 (:tangle ;; take the latest -- always overwrite
1834 (setq tangle (or (list (cdr pair)) tangle)))
1835 (:noweb
acedf35c 1836 (setq noweb (e-merge '(("yes" "no" "tangle")) noweb
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CD
1837 (split-string (or (cdr pair) "")))))
1838 (:cache
1839 (setq cache (e-merge '(("yes" "no")) cache
1840 (split-string (or (cdr pair) "")))))
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1841 (:padline
1842 (setq padline (e-merge '(("yes" "no")) padline
1843 (split-string (or (cdr pair) "")))))
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1844 (:shebang ;; take the latest -- always overwrite
1845 (setq shebang (or (list (cdr pair)) shebang)))
1846 (:comments
1847 (setq comments (e-merge '(("yes" "no")) comments
1848 (split-string (or (cdr pair) "")))))
1849 (t ;; replace: this covers e.g. :session
1850 (setq params (cons pair (assq-delete-all (car pair) params))))))
1851 plist))
1852 plists))
3ab2c837 1853 (setq vars (reverse vars))
afe98dfa 1854 (while vars (setq params (cons (cons :var (cddr (pop vars))) params)))
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1855 (mapc
1856 (lambda (hd)
1857 (let ((key (intern (concat ":" (symbol-name hd))))
1858 (val (eval hd)))
1859 (setf params (cons (cons key (mapconcat 'identity val " ")) params))))
1860 '(results exports tangle noweb padline cache shebang comments))
1861 params))
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1862
1863(defun org-babel-expand-noweb-references (&optional info parent-buffer)
1864 "Expand Noweb references in the body of the current source code block.
1865
1866For example the following reference would be replaced with the
1867body of the source-code block named 'example-block'.
1868
1869<<example-block>>
1870
1871Note that any text preceding the <<foo>> construct on a line will
1872be interposed between the lines of the replacement text. So for
1873example if <<foo>> is placed behind a comment, then the entire
1874replacement text will also be commented.
1875
1876This function must be called from inside of the buffer containing
1877the source-code block which holds BODY.
1878
1879In addition the following syntax can be used to insert the
1880results of evaluating the source-code block named 'example-block'.
1881
1882<<example-block()>>
1883
1884Any optional arguments can be passed to example-block by placing
1885the arguments inside the parenthesis following the convention
1886defined by `org-babel-lob'. For example
1887
1888<<example-block(a=9)>>
1889
1890would set the value of argument \"a\" equal to \"9\". Note that
1891these arguments are not evaluated in the current source-code
1892block but are passed literally to the \"example-block\"."
1893 (let* ((parent-buffer (or parent-buffer (current-buffer)))
1894 (info (or info (org-babel-get-src-block-info)))
1895 (lang (nth 0 info))
1896 (body (nth 1 info))
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1897 (comment (string= "noweb" (cdr (assoc :comments (nth 2 info)))))
1898 (new-body "") index source-name evaluate prefix blocks-in-buffer)
1899 (flet ((nb-add (text) (setq new-body (concat new-body text)))
1900 (c-wrap (text)
1901 (with-temp-buffer
1902 (funcall (intern (concat lang "-mode")))
1903 (comment-region (point) (progn (insert text) (point)))
1904 (org-babel-trim (buffer-string))))
1905 (blocks () ;; return the info lists of all blocks in this buffer
1906 (let (infos)
1907 (save-restriction
1908 (widen)
1909 (org-babel-map-src-blocks nil
1910 (setq infos (cons (org-babel-get-src-block-info 'light)
1911 infos))))
1912 (reverse infos))))
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1913 (with-temp-buffer
1914 (insert body) (goto-char (point-min))
1915 (setq index (point))
1916 (while (and (re-search-forward "<<\\(.+?\\)>>" nil t))
1917 (save-match-data (setf source-name (match-string 1)))
1918 (save-match-data (setq evaluate (string-match "\(.*\)" source-name)))
1919 (save-match-data
1920 (setq prefix
1921 (buffer-substring (match-beginning 0)
1922 (save-excursion
1923 (beginning-of-line 1) (point)))))
1924 ;; add interval to new-body (removing noweb reference)
1925 (goto-char (match-beginning 0))
1926 (nb-add (buffer-substring index (point)))
1927 (goto-char (match-end 0))
1928 (setq index (point))
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1929 (nb-add
1930 (with-current-buffer parent-buffer
1931 (mapconcat ;; interpose PREFIX between every line
1932 #'identity
1933 (split-string
1934 (if evaluate
1935 (let ((raw (org-babel-ref-resolve source-name)))
1936 (if (stringp raw) raw (format "%S" raw)))
1937 (or
1938 ;; retrieve from the library of babel
1939 (nth 2 (assoc (intern source-name)
1940 org-babel-library-of-babel))
1941 ;; return the contents of headlines literally
1942 (save-excursion
1943 (when (org-babel-ref-goto-headline-id source-name)
1944 (org-babel-ref-headline-body)))
1945 ;; find the expansion of reference in this buffer
1946 (mapconcat
1947 (lambda (i)
1948 (when (string= source-name
1949 (or (cdr (assoc :noweb-ref (nth 2 i)))
1950 (nth 4 i)))
1951 (let ((body (org-babel-expand-noweb-references i)))
1952 (if comment
1953 ((lambda (cs)
1954 (concat (c-wrap (car cs)) "\n"
1955 body "\n" (c-wrap (cadr cs))))
1956 (org-babel-tangle-comment-links i))
1957 body))))
1958 (or blocks-in-buffer
1959 (setq blocks-in-buffer (blocks)))
1960 "")
1961 ;; possibly raise an error if named block doesn't exist
1962 (if (member lang org-babel-noweb-error-langs)
1963 (error "%s" (concat
1964 "<<" source-name ">> "
1965 "could not be resolved (see "
1966 "`org-babel-noweb-error-langs')"))
1967 "")))
1968 "[\n\r]") (concat "\n" prefix)))))
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1969 (nb-add (buffer-substring index (point-max)))))
1970 new-body))
1971
1972(defun org-babel-clean-text-properties (text)
1973 "Strip all properties from text return."
1974 (when text
1975 (set-text-properties 0 (length text) nil text) text))
1976
1977(defun org-babel-strip-protective-commas (body)
1978 "Strip protective commas from bodies of source blocks."
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1979 (when body
1980 (replace-regexp-in-string "^,#" "#" body)))
86fbb8ca 1981
3ab2c837 1982(defun org-babel-script-escape (str &optional force)
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1983 "Safely convert tables into elisp lists."
1984 (let (in-single in-double out)
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1985 ((lambda (escaped) (condition-case nil (org-babel-read escaped) (error escaped)))
1986 (if (or force
1987 (and (stringp str)
1988 (> (length str) 2)
1989 (or (and (string-equal "[" (substring str 0 1))
1990 (string-equal "]" (substring str -1)))
1991 (and (string-equal "{" (substring str 0 1))
1992 (string-equal "}" (substring str -1)))
1993 (and (string-equal "(" (substring str 0 1))
1994 (string-equal ")" (substring str -1))))))
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1995 (org-babel-read
1996 (concat
1997 "'"
1998 (progn
1999 (mapc
2000 (lambda (ch)
2001 (setq
2002 out
2003 (case ch
2004 (91 (if (or in-double in-single) ; [
2005 (cons 91 out)
2006 (cons 40 out)))
2007 (93 (if (or in-double in-single) ; ]
2008 (cons 93 out)
2009 (cons 41 out)))
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2010 (123 (if (or in-double in-single) ; {
2011 (cons 123 out)
2012 (cons 40 out)))
2013 (125 (if (or in-double in-single) ; }
2014 (cons 125 out)
2015 (cons 41 out)))
2016 (44 (if (or in-double in-single) ; ,
2017 (cons 44 out) (cons 32 out)))
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2018 (39 (if in-double ; '
2019 (cons 39 out)
2020 (setq in-single (not in-single)) (cons 34 out)))
2021 (34 (if in-single ; "
2022 (append (list 34 32) out)
2023 (setq in-double (not in-double)) (cons 34 out)))
2024 (t (cons ch out)))))
2025 (string-to-list str))
2026 (apply #'string (reverse out)))))
2027 str))))
2028
3ab2c837 2029(defun org-babel-read (cell &optional inhibit-lisp-eval)
86fbb8ca
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2030 "Convert the string value of CELL to a number if appropriate.
2031Otherwise if cell looks like lisp (meaning it starts with a
3ab2c837
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2032\"(\", \"'\", \"`\" or a \"[\") then read it as lisp, otherwise
2033return it unmodified as a string. Optional argument NO-LISP-EVAL
2034inhibits lisp evaluation for situations in which is it not
2035appropriate."
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CD
2036 (if (and (stringp cell) (not (equal cell "")))
2037 (or (org-babel-number-p cell)
3ab2c837
BG
2038 (if (and (not inhibit-lisp-eval)
2039 (member (substring cell 0 1) '("(" "'" "`" "[")))
86fbb8ca 2040 (eval (read cell))
3ab2c837
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2041 (if (string= (substring cell 0 1) "\"")
2042 (read cell)
2043 (progn (set-text-properties 0 (length cell) nil cell) cell))))
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CD
2044 cell))
2045
2046(defun org-babel-number-p (string)
afe98dfa 2047 "If STRING represents a number return it's value."
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CD
2048 (if (and (string-match "^-?[0-9]*\\.?[0-9]*$" string)
2049 (= (length (substring string (match-beginning 0)
2050 (match-end 0)))
2051 (length string)))
2052 (string-to-number string)))
2053
afe98dfa 2054(defun org-babel-import-elisp-from-file (file-name &optional separator)
86fbb8ca
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2055 "Read the results located at FILE-NAME into an elisp table.
2056If the table is trivial, then return it as a scalar."
2057 (let (result)
2058 (save-window-excursion
2059 (with-temp-buffer
2060 (condition-case nil
2061 (progn
afe98dfa 2062 (org-table-import file-name separator)
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2063 (delete-file file-name)
2064 (setq result (mapcar (lambda (row)
2065 (mapcar #'org-babel-string-read row))
2066 (org-table-to-lisp))))
2067 (error nil)))
2068 (if (null (cdr result)) ;; if result is trivial vector, then scalarize it
2069 (if (consp (car result))
2070 (if (null (cdr (car result)))
2071 (caar result)
2072 result)
2073 (car result))
2074 result))))
2075
2076(defun org-babel-string-read (cell)
2077 "Strip nested \"s from around strings."
2078 (org-babel-read (or (and (stringp cell)
2079 (string-match "\\\"\\(.+\\)\\\"" cell)
2080 (match-string 1 cell))
2081 cell)))
2082
2083(defun org-babel-reverse-string (string)
2084 "Return the reverse of STRING."
2085 (apply 'string (reverse (string-to-list string))))
2086
2087(defun org-babel-chomp (string &optional regexp)
2088 "Strip trailing spaces and carriage returns from STRING.
2089Default regexp used is \"[ \f\t\n\r\v]\" but can be
2090overwritten by specifying a regexp as a second argument."
2091 (let ((regexp (or regexp "[ \f\t\n\r\v]")))
2092 (while (and (> (length string) 0)
2093 (string-match regexp (substring string -1)))
2094 (setq string (substring string 0 -1)))
2095 string))
2096
2097(defun org-babel-trim (string &optional regexp)
2098 "Strip leading and trailing spaces and carriage returns from STRING.
2099Like `org-babel-chomp' only it runs on both the front and back
2100of the string."
2101 (org-babel-chomp (org-babel-reverse-string
2102 (org-babel-chomp (org-babel-reverse-string string) regexp))
2103 regexp))
2104
2105(defvar org-babel-org-babel-call-process-region-original nil)
2106(defun org-babel-tramp-handle-call-process-region
2107 (start end program &optional delete buffer display &rest args)
2108 "Use tramp to handle call-process-region.
2109Fixes a bug in `tramp-handle-call-process-region'."
2110 (if (and (featurep 'tramp) (file-remote-p default-directory))
2111 (let ((tmpfile (tramp-compat-make-temp-file "")))
2112 (write-region start end tmpfile)
2113 (when delete (delete-region start end))
2114 (unwind-protect
2115 ;; (apply 'call-process program tmpfile buffer display args)
2116 ;; bug in tramp
2117 (apply 'process-file program tmpfile buffer display args)
2118 (delete-file tmpfile)))
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2119 ;; org-babel-call-process-region-original is the original emacs
2120 ;; definition. It is in scope from the let binding in
2121 ;; org-babel-execute-src-block
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2122 (apply org-babel-call-process-region-original
2123 start end program delete buffer display args)))
2124
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2125(defun org-babel-local-file-name (file)
2126 "Return the local name component of FILE."
2127 (if (file-remote-p file)
2128 (let (localname)
2129 (with-parsed-tramp-file-name file nil
2130 localname))
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2131 file))
2132
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2133(defun org-babel-process-file-name (name &optional no-quote-p)
2134 "Prepare NAME to be used in an external process.
2135If NAME specifies a remote location, the remote portion of the
2136name is removed, since in that case the process will be executing
2137remotely. The file name is then processed by
2138`expand-file-name'. Unless second argument NO-QUOTE-P is non-nil,
2139the file name is additionally processed by
2140`shell-quote-argument'"
2141 ((lambda (f) (if no-quote-p f (shell-quote-argument f)))
2142 (expand-file-name (org-babel-local-file-name name))))
2143
2144(defvar org-babel-temporary-directory)
2145(unless (or noninteractive (boundp 'org-babel-temporary-directory))
2146 (defvar org-babel-temporary-directory
2147 (or (and (boundp 'org-babel-temporary-directory)
2148 (file-exists-p org-babel-temporary-directory)
2149 org-babel-temporary-directory)
2150 (make-temp-file "babel-" t))
2151 "Directory to hold temporary files created to execute code blocks.
2152Used by `org-babel-temp-file'. This directory will be removed on
2153Emacs shutdown."))
2154
2155(defun org-babel-temp-file (prefix &optional suffix)
2156 "Create a temporary file in the `org-babel-temporary-directory'.
2157Passes PREFIX and SUFFIX directly to `make-temp-file' with the
2158value of `temporary-file-directory' temporarily set to the value
2159of `org-babel-temporary-directory'."
2160 (if (file-remote-p default-directory)
2161 (make-temp-file
2162 (concat (file-remote-p default-directory)
acedf35c 2163 (expand-file-name
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2164 prefix temporary-file-directory)
2165 nil suffix))
2166 (let ((temporary-file-directory
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2167 (or (and (boundp 'org-babel-temporary-directory)
2168 (file-exists-p org-babel-temporary-directory)
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2169 org-babel-temporary-directory)
2170 temporary-file-directory)))
2171 (make-temp-file prefix nil suffix))))
2172
2173(defun org-babel-remove-temporary-directory ()
2174 "Remove `org-babel-temporary-directory' on Emacs shutdown."
2175 (when (and (boundp 'org-babel-temporary-directory)
2176 (file-exists-p org-babel-temporary-directory))
2177 ;; taken from `delete-directory' in files.el
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2178 (condition-case nil
2179 (progn
2180 (mapc (lambda (file)
2181 ;; This test is equivalent to
2182 ;; (and (file-directory-p fn) (not (file-symlink-p fn)))
2183 ;; but more efficient
2184 (if (eq t (car (file-attributes file)))
2185 (delete-directory file)
2186 (delete-file file)))
2187 ;; We do not want to delete "." and "..".
2188 (directory-files org-babel-temporary-directory 'full
2189 "^\\([^.]\\|\\.\\([^.]\\|\\..\\)\\).*"))
2190 (delete-directory org-babel-temporary-directory))
2191 (error
2192 (message "Failed to remove temporary Org-babel directory %s"
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2193 (if (boundp 'org-babel-temporary-directory)
2194 org-babel-temporary-directory
2195 "[directory not defined]"))))))
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2196
2197(add-hook 'kill-emacs-hook 'org-babel-remove-temporary-directory)
2198
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2199(provide 'ob)
2200
3ab2c837 2201;; arch-tag: 01a7ebee-06c5-4ee4-a709-e660d28c0af1
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2202
2203;;; ob.el ends here