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-;;; ob-exp.el --- Exportation of org-babel source blocks
-
-;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
-
-;; Author: Eric Schulte, Dan Davison
-;; Keywords: literate programming, reproducible research
-;; Homepage: http://orgmode.org
-;; Version: 7.4
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; See the online documentation for more information
-;;
-;; http://orgmode.org/worg/org-contrib/babel/
-
-;;; Code:
-(require 'ob)
-(require 'org-exp-blocks)
-(eval-when-compile
- (require 'cl))
-
-(defvar obe-marker nil)
-(defvar org-current-export-file)
-(defvar org-babel-lob-one-liner-regexp)
-(defvar org-babel-ref-split-regexp)
-(declare-function org-babel-lob-get-info "ob-lob" ())
-(declare-function org-babel-eval-wipe-error-buffer "ob-eval" ())
-(add-to-list 'org-export-interblocks '(src org-babel-exp-inline-src-blocks))
-(add-to-list 'org-export-interblocks '(lob org-babel-exp-lob-one-liners))
-(add-hook 'org-export-blocks-postblock-hook 'org-exp-res/src-name-cleanup)
-
-(org-export-blocks-add-block '(src org-babel-exp-src-blocks nil))
-
-(defcustom org-export-babel-evaluate t
- "Switch controlling code evaluation during export.
-When set to nil no code will be evaluated as part of the export
-process."
- :group 'org-babel
- :type 'boolean)
-(put 'org-export-babel-evaluate 'safe-local-variable (lambda (x) (eq x nil)))
-
-(defvar org-babel-function-def-export-keyword "function"
- "The keyword to substitute for the source name line on export.
-When exporting a source block function, this keyword will
-appear in the exported version in the place of source name
-line. A source block is considered to be a source block function
-if the source name is present and is followed by a parenthesized
-argument list. The parentheses may be empty or contain
-whitespace. An example is the following which generates n random
-\(uniform) numbers.
-
-#+source: rand(n)
-#+begin_src R
- runif(n)
-#+end_src")
-
-(defvar org-babel-function-def-export-indent 4
- "Number of characters to indent a source block on export.
-When exporting a source block function, the block contents will
-be indented by this many characters. See
-`org-babel-function-def-export-name' for the definition of a
-source block function.")
-
-(defmacro org-babel-exp-in-export-file (&rest body)
- `(let* ((lang-headers (intern (concat "org-babel-default-header-args:" lang)))
- (heading (nth 4 (ignore-errors (org-heading-components))))
- (link (when org-current-export-file
- (org-make-link-string
- (if heading
- (concat org-current-export-file "::" heading)
- org-current-export-file))))
- (export-buffer (current-buffer)) results)
- (when link
- ;; resolve parameters in the original file so that
- ;; headline and file-wide parameters are included, attempt
- ;; to go to the same heading in the original file
- (set-buffer (get-file-buffer org-current-export-file))
- (save-restriction
- (condition-case nil
- (org-open-link-from-string link)
- (error (when heading
- (goto-char (point-min))
- (re-search-forward (regexp-quote heading) nil t))))
- (setq results ,@body))
- (set-buffer export-buffer)
- results)))
-
-(defun org-babel-exp-src-blocks (body &rest headers)
- "Process source block for export.
-Depending on the 'export' headers argument in replace the source
-code block with...
-
-both ---- display the code and the results
-
-code ---- the default, display the code inside the block but do
- not process
-
-results - just like none only the block is run on export ensuring
- that it's results are present in the org-mode buffer
-
-none ----- do not display either code or results upon export"
- (interactive)
- (message "org-babel-exp processing...")
- (save-excursion
- (goto-char (match-beginning 0))
- (let* ((info (org-babel-get-src-block-info 'light))
- (lang (nth 0 info))
- (raw-params (nth 2 info)))
- ;; bail if we couldn't get any info from the block
- (when info
- (org-babel-exp-in-export-file
- (setf (nth 2 info)
- (org-babel-merge-params
- org-babel-default-header-args
- (org-babel-params-from-buffer)
- (org-babel-params-from-properties lang)
- (if (boundp lang-headers) (eval lang-headers) nil)
- raw-params)))
- ;; expand noweb references in the original file
- (setf (nth 1 info)
- (if (and (cdr (assoc :noweb (nth 2 info)))
- (string= "yes" (cdr (assoc :noweb (nth 2 info)))))
- (org-babel-expand-noweb-references
- info (get-file-buffer org-current-export-file))
- (nth 1 info)))
- (org-babel-exp-do-export info 'block)))))
-
-(defun org-babel-exp-inline-src-blocks (start end)
- "Process inline source blocks between START and END for export.
-See `org-babel-exp-src-blocks' for export options, currently the
-options and are taken from `org-babel-default-inline-header-args'."
- (interactive)
- (save-excursion
- (goto-char start)
- (while (and (< (point) end)
- (re-search-forward org-babel-inline-src-block-regexp end t))
- (let* ((info (save-match-data (org-babel-parse-inline-src-block-match)))
- (params (nth 2 info))
- (replacement
- (save-match-data
- (if (org-babel-in-example-or-verbatim)
- (buffer-substring (match-beginning 0) (match-end 0))
- ;; expand noweb references in the original file
- (setf (nth 1 info)
- (if (and (cdr (assoc :noweb params))
- (string= "yes" (cdr (assoc :noweb params))))
- (org-babel-expand-noweb-references
- info (get-file-buffer org-current-export-file))
- (nth 1 info)))
- (org-babel-exp-do-export info 'inline)))))
- (setq end (+ end (- (length replacement) (length (match-string 1)))))
- (replace-match replacement t t nil 1)))))
-
-(defun org-exp-res/src-name-cleanup ()
- "Clean up #+results and #+srcname lines for export.
-This function should only be called after all block processing
-has taken place."
- (interactive)
- (save-excursion
- (goto-char (point-min))
- (while (org-re-search-forward-unprotected
- (concat
- "\\("org-babel-src-name-regexp"\\|"org-babel-result-regexp"\\)")
- nil t)
- (delete-region
- (progn (beginning-of-line) (point))
- (progn (end-of-line) (+ 1 (point)))))))
-
-(defun org-babel-in-example-or-verbatim ()
- "Return true if point is in example or verbatim code.
-Example and verbatim code include escaped portions of
-an org-mode buffer code that should be treated as normal
-org-mode text."
- (or (org-in-indented-comment-line)
- (save-excursion
- (save-match-data
- (goto-char (point-at-bol))
- (looking-at "[ \t]*:[ \t]")))
- (org-in-regexps-block-p "^[ \t]*#\\+begin_src" "^[ \t]*#\\+end_src")))
-
-(defun org-babel-exp-lob-one-liners (start end)
- "Process Library of Babel calls between START and END for export.
-See `org-babel-exp-src-blocks' for export options. Currently the
-options are taken from `org-babel-default-header-args'."
- (interactive)
- (let (replacement)
- (save-excursion
- (goto-char start)
- (while (and (< (point) end)
- (re-search-forward org-babel-lob-one-liner-regexp nil t))
- (setq replacement
- (let ((lob-info (org-babel-lob-get-info)))
- (save-match-data
- (org-babel-exp-do-export
- (list "emacs-lisp" "results"
- (org-babel-merge-params
- org-babel-default-header-args
- (org-babel-params-from-buffer)
- (org-babel-params-from-properties)
- (org-babel-parse-header-arguments
- (org-babel-clean-text-properties
- (concat ":var results="
- (mapconcat #'identity
- (butlast lob-info) " ")))))
- (car (last lob-info)))
- 'lob))))
- (setq end (+ end (- (length replacement) (length (match-string 0)))))
- (replace-match replacement t t)))))
-
-(defun org-babel-exp-do-export (info type)
- "Return a string with the exported content of a code block.
-The function respects the value of the :exports header argument."
- (flet ((silently () (let ((session (cdr (assoc :session (nth 2 info)))))
- (when (and session
- (not (equal "none" session)))
- (org-babel-exp-results info type 'silent))))
- (clean () (org-babel-remove-result info)))
- (case (intern (or (cdr (assoc :exports (nth 2 info))) "code"))
- ('none (silently) (clean) "")
- ('code (silently) (clean) (org-babel-exp-code info type))
- ('results (org-babel-exp-results info type))
- ('both (concat (org-babel-exp-code info type)
- "\n\n"
- (org-babel-exp-results info type))))))
-
-(defvar backend)
-(defun org-babel-exp-code (info type)
- "Prepare and return code in the current code block for export.
-Code is prepared in a manner suitable for export by
-org-mode. This function is called by `org-babel-exp-do-export'.
-The code block is not evaluated."
- (let ((lang (nth 0 info))
- (body (nth 1 info))
- (switches (nth 3 info))
- (name (nth 4 info))
- (args (mapcar #'cdr (org-babel-get-header (nth 2 info) :var))))
- (case type
- ('inline (format "=%s=" body))
- ('block
- (let ((str
- (format "#+BEGIN_SRC %s %s\n%s%s#+END_SRC\n" lang switches body
- (if (and body (string-match "\n$" body))
- "" "\n"))))
- (when name
- (add-text-properties
- 0 (length str)
- (list 'org-caption
- (format "%s(%s)"
- name
- (mapconcat #'identity args ", ")))
- str))
- str))
- ('lob
- (let ((call-line (and (string-match "results=" (car args))
- (substring (car args) (match-end 0)))))
- (cond
- ((eq backend 'html)
- (format "\n#+HTML: <label class=\"org-src-name\">%s</label>\n"
- call-line))
- ((format ": %s\n" call-line))))))))
-
-(defun org-babel-exp-results (info type &optional silent)
- "Evaluate and return the results of the current code block for export.
-Results are prepared in a manner suitable for export by org-mode.
-This function is called by `org-babel-exp-do-export'. The code
-block will be evaluated. Optional argument SILENT can be used to
-inhibit insertion of results into the buffer."
- (or
- (when org-export-babel-evaluate
- (let ((lang (nth 0 info))
- (body (nth 1 info)))
- (setf (nth 2 info) (org-babel-exp-in-export-file
- (org-babel-process-params (nth 2 info))))
- ;; skip code blocks which we can't evaluate
- (when (fboundp (intern (concat "org-babel-execute:" lang)))
- (org-babel-eval-wipe-error-buffer)
- (if (equal type 'inline)
- (let ((raw (org-babel-execute-src-block
- nil info '((:results . "silent"))))
- (result-params (split-string
- (cdr (assoc :results (nth 2 info))))))
- (unless silent
- (cond ;; respect the value of the :results header argument
- ((member "file" result-params)
- (org-babel-result-to-file raw))
- ((or (member "raw" result-params)
- (member "org" result-params))
- (format "%s" raw))
- ((member "code" result-params)
- (format "src_%s{%s}" lang raw))
- (t
- (if (stringp raw)
- (if (= 0 (length raw)) "=(no results)="
- (format "%s" raw))
- (format "%S" raw))))))
- (prog1 nil
- (setf (nth 2 info)
- (org-babel-merge-params
- (nth 2 info)
- `((:results . ,(if silent "silent" "replace")))))
- (cond
- ((equal type 'block) (org-babel-execute-src-block nil info))
- ((equal type 'lob)
- (save-excursion
- (re-search-backward org-babel-lob-one-liner-regexp nil t)
- (org-babel-execute-src-block nil info)))))))))
- ""))
-
-(provide 'ob-exp)
-
-;; arch-tag: 523abf4c-76d1-44ed-9f27-e3bddf34bf0f
-
-;;; ob-exp.el ends here
generated by cgit v1.2.3-2-g168b (git 2.25.1) at 2024-11-04 21:10:09 +0000