forked from mirrors/org-mode
* lisp/ob-exp.el (org-babel-exp-in-export-file): Instead of using the headline text use the headline ID when one is present. This fixes a bug in the resolution of code block headers in properties during export when multiple headlines with the same name are present.
416 lines
16 KiB
EmacsLisp
416 lines
16 KiB
EmacsLisp
;;; ob-exp.el --- Exportation of org-babel source blocks
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;; Copyright (C) 2009-2014 Free Software Foundation, Inc.
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;; Authors: Eric Schulte
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;; 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-core)
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(require 'org-src)
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(eval-when-compile
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(require 'cl))
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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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(defvar org-list-forbidden-blocks)
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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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(declare-function org-between-regexps-p "org"
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(start-re end-re &optional lim-up lim-down))
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(declare-function org-get-indentation "org" (&optional line))
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(declare-function org-heading-components "org" ())
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(declare-function org-in-commented-heading-p "org" (&optional no-inheritance))
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(declare-function org-in-block-p "org" (names))
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(declare-function org-in-verbatim-emphasis "org" ())
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(declare-function org-link-search "org" (s &optional type avoid-pos stealth))
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(declare-function org-fill-template "org" (template alist))
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(declare-function org-split-string "org" (string &optional separators))
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(declare-function org-element-at-point "org-element" ())
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(declare-function org-element-context "org-element" ())
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(declare-function org-element-property "org-element" (property element))
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(declare-function org-element-type "org-element" (element))
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(declare-function org-escape-code-in-string "org-src" (s))
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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. When set to 'inline-only, only inline code blocks will
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be executed."
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:group 'org-babel
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:version "24.1"
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:type '(choice (const :tag "Never" nil)
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(const :tag "Only inline code" inline-only)
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(const :tag "Always" t)))
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(put 'org-export-babel-evaluate 'safe-local-variable (lambda (x) (eq x nil)))
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(defvar org-link-search-inhibit-query)
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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-query (or (org-id-get)
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;; CUSTOM_IDs don't work, maybe they are
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;; stripped, or maybe they resolve too
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;; late in `org-link-search'.
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;; (org-entry-get nil "CUSTOM_ID")
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(nth 4 (ignore-errors (org-heading-components)))))
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(export-buffer (current-buffer))
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results)
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(when org-babel-exp-reference-buffer
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;; Resolve parameters in the original file so that headline and
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;; file-wide parameters are included, attempt to go to the same
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;; heading in the original file
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(set-buffer org-babel-exp-reference-buffer)
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(save-restriction
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(when heading-query
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(condition-case nil
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(let ((org-link-search-inhibit-query t))
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;; TODO: When multiple headings have the same title,
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;; this returns the first, which is not always
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;; the right heading. Consider a better way to
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;; find the proper heading.
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(org-link-search heading-query))
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(error (when heading-query
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(goto-char (point-min))
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(re-search-forward (regexp-quote heading-query) 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 (&rest headers)
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"Process source block for export.
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Depending on the 'export' headers argument, replace the source
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code block like this:
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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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Assume point is at the beginning of block's starting line."
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(interactive)
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(save-excursion
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(let* ((info (org-babel-get-src-block-info 'light))
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(line (org-current-line))
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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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(unless noninteractive
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(message "org-babel-exp process %s at line %d..." lang line))
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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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(apply #'org-babel-merge-params
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org-babel-default-header-args
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(if (boundp lang-headers) (eval lang-headers) nil)
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(append (org-babel-params-from-properties lang)
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(list raw-params))))))
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(setf hash (org-babel-sha1-hash info)))
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(org-babel-exp-do-export info 'block hash)))))
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(defcustom org-babel-exp-call-line-template
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""
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"Template used to export call lines.
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This template may be customized to include the call line name
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with any export markup. The template is filled out using
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`org-fill-template', and the following %keys may be used.
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line --- call line
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An example value would be \"\\n: call: %line\" to export the call line
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wrapped in a verbatim environment.
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Note: the results are inserted separately after the contents of
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this template."
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:group 'org-babel
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:type 'string)
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(defvar org-babel-default-lob-header-args)
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(defun org-babel-exp-process-buffer (reference-buffer)
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"Execute all Babel blocks in current buffer.
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REFERENCE-BUFFER is the buffer containing a pristine copy of the
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buffer being processed. It is used to properly resolve
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references in source blocks, as modifications in current buffer
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may make them unreachable."
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(interactive)
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(save-window-excursion
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(save-excursion
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(let ((case-fold-search t)
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(org-babel-exp-reference-buffer reference-buffer)
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(regexp (concat org-babel-inline-src-block-regexp "\\|"
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org-babel-lob-one-liner-regexp "\\|"
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"^[ \t]*#\\+BEGIN_SRC")))
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(goto-char (point-min))
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(while (re-search-forward regexp nil t)
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(unless (save-match-data (org-in-commented-heading-p))
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(let* ((element (save-excursion
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;; If match is inline, point is at its
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;; end. Move backward so
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;; `org-element-context' can get the
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;; object, not the following one.
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(backward-char)
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(save-match-data (org-element-context))))
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(type (org-element-type element))
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(begin (copy-marker (org-element-property :begin element)))
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(end (copy-marker
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(save-excursion
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(goto-char (org-element-property :end element))
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(skip-chars-backward " \r\t\n")
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(point)))))
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(case type
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(inline-src-block
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(let* ((info (org-babel-parse-inline-src-block-match))
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(params (nth 2 info)))
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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 org-babel-exp-reference-buffer)
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(nth 1 info)))
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(goto-char begin)
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(let ((replacement (org-babel-exp-do-export info 'inline)))
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(if (equal replacement "")
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;; Replacement code is empty: remove inline
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;; source block, including extra white space
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;; that might have been created when
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;; inserting results.
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(delete-region begin
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(progn (goto-char end)
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(skip-chars-forward " \t")
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(point)))
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;; Otherwise: remove inline src block but
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;; preserve following white spaces. Then
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;; insert value.
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(delete-region begin end)
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(insert replacement)))))
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((babel-call inline-babel-call)
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(let* ((lob-info (org-babel-lob-get-info))
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(results
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(org-babel-exp-do-export
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(list "emacs-lisp" "results"
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(apply #'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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(append
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(org-babel-params-from-properties)
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(list
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(org-babel-parse-header-arguments
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(org-no-properties
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(concat
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":var results="
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(mapconcat 'identity
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(butlast lob-info 2)
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" ")))))))
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"" (nth 3 lob-info) (nth 2 lob-info))
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'lob))
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(rep (org-fill-template
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org-babel-exp-call-line-template
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`(("line" . ,(nth 0 lob-info))))))
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;; If replacement is empty, completely remove the
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;; object/element, including any extra white space
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;; that might have been created when including
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;; results.
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(if (equal rep "")
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(delete-region
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begin
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(progn (goto-char end)
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(if (not (eq type 'babel-call))
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(progn (skip-chars-forward " \t") (point))
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(skip-chars-forward " \r\t\n")
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(line-beginning-position))))
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;; Otherwise, preserve following white
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;; spaces/newlines and then, insert replacement
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;; string.
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(goto-char begin)
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(delete-region begin end)
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(insert rep))))
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(src-block
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(let* ((match-start (copy-marker (match-beginning 0)))
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(ind (org-get-indentation))
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(headers
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(cons
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(org-element-property :language element)
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(let ((params (org-element-property :parameters
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element)))
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(and params (org-split-string params "[ \t]+"))))))
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;; Take care of matched block: compute replacement
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;; string. In particular, a nil REPLACEMENT means
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;; the block should be left as-is while an empty
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;; string should remove the block.
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(let ((replacement
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(progn (goto-char match-start)
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(org-babel-exp-src-block headers))))
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(cond ((not replacement) (goto-char end))
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((equal replacement "")
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(goto-char end)
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(skip-chars-forward " \r\t\n")
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(beginning-of-line)
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(delete-region begin (point)))
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(t
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(goto-char match-start)
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(delete-region (point)
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(save-excursion (goto-char end)
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(line-end-position)))
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(insert replacement)
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(if (or org-src-preserve-indentation
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(org-element-property :preserve-indent
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element))
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;; Indent only the code block markers.
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(save-excursion (skip-chars-backward " \r\t\n")
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(indent-line-to ind)
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(goto-char match-start)
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(indent-line-to ind))
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;; Indent everything.
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(indent-rigidly match-start (point) ind)))))
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(set-marker match-start nil))))
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(set-marker begin nil)
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(set-marker end nil))))))))
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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 (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-in-block-p org-list-forbidden-blocks)
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(org-between-regexps-p "^[ \t]*#\\+begin_src" "^[ \t]*#\\+end_src")))
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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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(let ((silently (lambda () (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 (lambda () (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 (funcall silently) (funcall clean) "")
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('code (funcall silently) (funcall 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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(defcustom org-babel-exp-code-template
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"#+BEGIN_SRC %lang%switches%flags\n%body\n#+END_SRC"
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"Template used to export the body of code blocks.
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This template may be customized to include additional information
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such as the code block name, or the values of particular header
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arguments. The template is filled out using `org-fill-template',
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and the following %keys may be used.
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lang ------ the language of the code block
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name ------ the name of the code block
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body ------ the body of the code block
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switches -- the switches associated to the code block
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flags ----- the flags passed to the code block
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In addition to the keys mentioned above, every header argument
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defined for the code block may be used as a key and will be
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replaced with its value."
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:group 'org-babel
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:type 'string)
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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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(setf (nth 1 info)
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(if (string= "strip-export" (cdr (assoc :noweb (nth 2 info))))
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(replace-regexp-in-string
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(org-babel-noweb-wrap) "" (nth 1 info))
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(if (org-babel-noweb-p (nth 2 info) :export)
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(org-babel-expand-noweb-references
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info org-babel-exp-reference-buffer)
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(nth 1 info))))
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(org-fill-template
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org-babel-exp-code-template
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`(("lang" . ,(nth 0 info))
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("body" . ,(org-escape-code-in-string (nth 1 info)))
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("switches" . ,(let ((f (nth 3 info)))
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(and (org-string-nw-p f) (concat " " f))))
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("flags" . ,(let ((f (assq :flags (nth 2 info))))
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(and f (concat " " (cdr f)))))
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,@(mapcar (lambda (pair)
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(cons (substring (symbol-name (car pair)) 1)
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(format "%S" (cdr pair))))
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(nth 2 info))
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("name" . ,(or (nth 4 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 (or (eq org-export-babel-evaluate t)
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(and (eq type 'inline)
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(eq org-export-babel-evaluate 'inline-only)))
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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 (if (org-babel-noweb-p (nth 2 info) :eval)
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(org-babel-expand-noweb-references
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info org-babel-exp-reference-buffer)
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(nth 1 info)))
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(info (copy-sequence info))
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(org-babel-current-src-block-location (point-marker)))
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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 1 info) body)
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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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((equal type 'block)
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(org-babel-execute-src-block nil info))
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((equal type 'inline)
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;; position the point on the inline source block allowing
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;; `org-babel-insert-result' to check that the block is
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;; inline
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(re-search-backward "[ \f\t\n\r\v]" nil t)
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(re-search-forward org-babel-inline-src-block-regexp nil t)
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(re-search-backward "src_" nil t)
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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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(let (org-confirm-babel-evaluate)
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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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