mirror of
https://git.savannah.gnu.org/git/emacs/org-mode.git
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58f1dbccf8
Also remove blank lines before the ";;; org*el ends here" declarations. Having a "Version" header forced us to update every file when releasing a new version of Org; it also forced us to update every file when merging Org with Emacs trunk, thus cluttering the diffs between the previously merged version and the new one with useless information. Glenn Morris suggested this in emacs-devel: http://lists.gnu.org/archive/html/emacs-devel/2011-08/msg00322.html
272 lines
10 KiB
EmacsLisp
272 lines
10 KiB
EmacsLisp
;;; ob-exp.el --- Exportation of org-babel source blocks
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;; Copyright (C) 2009-2011 Free Software Foundation, Inc.
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;; Author: Eric Schulte, Dan Davison
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;; Keywords: literate programming, reproducible research
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;; Homepage: http://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Code:
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(require 'ob)
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(require 'org-exp-blocks)
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(eval-when-compile
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(require 'cl))
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(defvar obe-marker nil)
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(defvar org-current-export-file)
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(defvar org-babel-lob-one-liner-regexp)
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(defvar org-babel-ref-split-regexp)
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(declare-function org-babel-lob-get-info "ob-lob" ())
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(declare-function org-babel-eval-wipe-error-buffer "ob-eval" ())
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(add-to-list 'org-export-interblocks '(src org-babel-exp-inline-src-blocks))
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(add-to-list 'org-export-interblocks '(lob org-babel-exp-lob-one-liners))
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(add-hook 'org-export-blocks-postblock-hook 'org-exp-res/src-name-cleanup)
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(org-export-blocks-add-block '(src org-babel-exp-src-block nil))
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(defcustom org-export-babel-evaluate t
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"Switch controlling code evaluation during export.
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When set to nil no code will be evaluated as part of the export
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process."
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:group 'org-babel
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:type 'boolean)
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(put 'org-export-babel-evaluate 'safe-local-variable (lambda (x) (eq x nil)))
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(defmacro org-babel-exp-in-export-file (lang &rest body)
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(declare (indent 1))
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`(let* ((lang-headers (intern (concat "org-babel-default-header-args:" ,lang)))
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(heading (nth 4 (ignore-errors (org-heading-components))))
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(link (when org-current-export-file
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(org-make-link-string
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(if heading
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(concat org-current-export-file "::" heading)
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org-current-export-file))))
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(export-buffer (current-buffer)) results)
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(when link
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;; resolve parameters in the original file so that
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;; headline and file-wide parameters are included, attempt
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;; to go to the same heading in the original file
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(set-buffer (get-file-buffer org-current-export-file))
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(save-restriction
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(condition-case nil
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(let ((org-link-search-inhibit-query t))
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(org-open-link-from-string link))
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(error (when heading
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(goto-char (point-min))
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(re-search-forward (regexp-quote heading) nil t))))
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(setq results ,@body))
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(set-buffer export-buffer)
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results)))
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(def-edebug-spec org-babel-exp-in-export-file (form body))
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(defun org-babel-exp-src-block (body &rest headers)
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"Process source block for export.
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Depending on the 'export' headers argument in replace the source
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code block with...
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both ---- display the code and the results
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code ---- the default, display the code inside the block but do
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not process
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results - just like none only the block is run on export ensuring
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that it's results are present in the org-mode buffer
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none ----- do not display either code or results upon export"
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(interactive)
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(unless noninteractive (message "org-babel-exp processing..."))
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(save-excursion
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(goto-char (match-beginning 0))
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(let* ((info (org-babel-get-src-block-info 'light))
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(lang (nth 0 info))
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(raw-params (nth 2 info)) hash)
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;; bail if we couldn't get any info from the block
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(when info
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;; if we're actually going to need the parameters
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(when (member (cdr (assoc :exports (nth 2 info))) '("both" "results"))
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(org-babel-exp-in-export-file lang
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(setf (nth 2 info)
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(org-babel-process-params
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(org-babel-merge-params
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org-babel-default-header-args
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(org-babel-params-from-buffer)
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(org-babel-params-from-properties lang)
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(if (boundp lang-headers) (eval lang-headers) nil)
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raw-params))))
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(setf hash (org-babel-sha1-hash info)))
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;; expand noweb references in the original file
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(setf (nth 1 info)
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(if (and (cdr (assoc :noweb (nth 2 info)))
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(string= "yes" (cdr (assoc :noweb (nth 2 info)))))
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(org-babel-expand-noweb-references
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info (get-file-buffer org-current-export-file))
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(nth 1 info)))
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(org-babel-exp-do-export info 'block hash)))))
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(defun org-babel-exp-inline-src-blocks (start end)
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"Process inline source blocks between START and END for export.
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See `org-babel-exp-src-block' for export options, currently the
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options and are taken from `org-babel-default-inline-header-args'."
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(interactive)
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(save-excursion
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(goto-char start)
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(while (and (< (point) end)
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(re-search-forward org-babel-inline-src-block-regexp end t))
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(let* ((info (save-match-data (org-babel-parse-inline-src-block-match)))
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(params (nth 2 info)) code-replacement)
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(save-match-data
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(goto-char (match-beginning 2))
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(when (not (org-babel-in-example-or-verbatim))
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;; expand noweb references in the original file
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(setf (nth 1 info)
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(if (and (cdr (assoc :noweb params))
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(string= "yes" (cdr (assoc :noweb params))))
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(org-babel-expand-noweb-references
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info (get-file-buffer org-current-export-file))
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(nth 1 info)))
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(setq code-replacement (org-babel-exp-do-export info 'inline))))
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(if code-replacement
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(replace-match code-replacement nil nil nil 1)
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(org-babel-examplize-region (match-beginning 1) (match-end 1))
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(forward-char 2))))))
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(defun org-exp-res/src-name-cleanup ()
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"Clean up #+results and #+srcname lines for export.
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This function should only be called after all block processing
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has taken place."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(while (org-re-search-forward-unprotected
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(concat
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"\\("org-babel-src-name-regexp"\\|"org-babel-result-regexp"\\)")
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nil t)
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(delete-region
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(progn (beginning-of-line) (point))
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(progn (end-of-line) (+ 1 (point)))))))
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(defun org-babel-in-example-or-verbatim ()
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"Return true if point is in example or verbatim code.
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Example and verbatim code include escaped portions of
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an org-mode buffer code that should be treated as normal
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org-mode text."
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(or (org-in-indented-comment-line)
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(save-match-data
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(save-excursion
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(goto-char (point-at-bol))
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(looking-at "[ \t]*:[ \t]")))
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(org-in-verbatim-emphasis)
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(org-between-regexps-p "^[ \t]*#\\+begin_src" "^[ \t]*#\\+end_src")))
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(defvar org-babel-default-lob-header-args)
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(defun org-babel-exp-lob-one-liners (start end)
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"Process Library of Babel calls between START and END for export.
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See `org-babel-exp-src-block' for export options. Currently the
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options are taken from `org-babel-default-header-args'."
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(interactive)
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(save-excursion
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(goto-char start)
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(while (and (< (point) end)
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(re-search-forward org-babel-lob-one-liner-regexp nil t))
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(unless (and (match-string 12) (org-babel-in-example-or-verbatim))
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(let* ((lob-info (org-babel-lob-get-info))
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(inlinep (match-string 11))
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(inline-start (match-end 11))
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(inline-end (match-end 0))
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(rep (let ((lob-info (org-babel-lob-get-info)))
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(save-match-data
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(org-babel-exp-do-export
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(list "emacs-lisp" "results"
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(org-babel-merge-params
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org-babel-default-header-args
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org-babel-default-lob-header-args
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(org-babel-params-from-buffer)
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(org-babel-params-from-properties)
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(org-babel-parse-header-arguments
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(org-babel-clean-text-properties
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(concat ":var results="
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(mapconcat #'identity
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(butlast lob-info) " ")))))
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"" nil (car (last lob-info)))
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'lob)))))
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(setq end (+ end (- (length rep)
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(- (length (match-string 0))
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(length (or (match-string 11) ""))))))
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(if inlinep
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(save-excursion
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(goto-char inline-start)
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(delete-region inline-start inline-end)
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(insert rep))
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(replace-match rep t t)))))))
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(defun org-babel-exp-do-export (info type &optional hash)
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"Return a string with the exported content of a code block.
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The function respects the value of the :exports header argument."
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(flet ((silently () (let ((session (cdr (assoc :session (nth 2 info)))))
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(when (not (and session (equal "none" session)))
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(org-babel-exp-results info type 'silent))))
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(clean () (unless (eq type 'inline) (org-babel-remove-result info))))
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(case (intern (or (cdr (assoc :exports (nth 2 info))) "code"))
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('none (silently) (clean) "")
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('code (silently) (clean) (org-babel-exp-code info))
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('results (org-babel-exp-results info type nil hash) "")
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('both (org-babel-exp-results info type nil hash)
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(org-babel-exp-code info)))))
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(defun org-babel-exp-code (info)
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"Return the original code block formatted for export."
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(org-fill-template
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"#+BEGIN_SRC %lang%flags\n%body\n#+END_SRC\n"
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`(("lang" . ,(nth 0 info))
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("flags" . ,((lambda (f) (when f (concat " " f))) (nth 3 info)))
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("body" . ,(nth 1 info)))))
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(defun org-babel-exp-results (info type &optional silent hash)
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"Evaluate and return the results of the current code block for export.
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Results are prepared in a manner suitable for export by org-mode.
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This function is called by `org-babel-exp-do-export'. The code
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block will be evaluated. Optional argument SILENT can be used to
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inhibit insertion of results into the buffer."
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(when (and org-export-babel-evaluate
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(not (and hash (equal hash (org-babel-current-result-hash)))))
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(let ((lang (nth 0 info))
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(body (nth 1 info)))
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;; skip code blocks which we can't evaluate
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(when (fboundp (intern (concat "org-babel-execute:" lang)))
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(org-babel-eval-wipe-error-buffer)
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(prog1 nil
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(setf (nth 2 info)
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(org-babel-exp-in-export-file lang
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(org-babel-process-params
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(org-babel-merge-params
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(nth 2 info)
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`((:results . ,(if silent "silent" "replace")))))))
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(cond
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((or (equal type 'block) (equal type 'inline))
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(org-babel-execute-src-block nil info))
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((equal type 'lob)
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(save-excursion
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(re-search-backward org-babel-lob-one-liner-regexp nil t)
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(org-babel-execute-src-block nil info)))))))))
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(provide 'ob-exp)
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;;; ob-exp.el ends here
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