forked from mirrors/org-mode
25f76ffa44
This change provides for better export of named source-code blocks,
with specific support for more attractive html export. The arguments
are included with the source code name, and both the source code name
and code body are wrapped in a div to support styling with css. For
example the following CSS can be used to associate a source-code block
name with it's code body, and to slightly indent the body.
.org-src-container {
border-left: 4px solid gray;
padding: 0.5em 0.5em 0.5em 1em; }
.org-src-container pre {
margin-left: 1em; }
197 lines
7.5 KiB
EmacsLisp
197 lines
7.5 KiB
EmacsLisp
;;; org-babel-exp.el --- Exportation of org-babel source blocks
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;; Copyright (C) 2009 Eric Schulte, Dan Davison
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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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;; Version: 0.01
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;;; License:
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;; This program 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, or (at your option)
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;; any later version.
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;;
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;; This program 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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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; for more information see the comments in org-babel.el
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;;; Code:
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(require 'org-babel)
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(require 'org-exp-blocks)
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(org-export-blocks-add-block '(src org-babel-exp-src-blocks nil))
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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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(defvar org-babel-function-def-export-keyword "function"
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"When exporting a source block function, this keyword will
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appear in the exported version in the place of source name
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line. A source block is considered to be a source block function
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if the source name is present and is followed by a parenthesized
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argument list. The parentheses may be empty or contain
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whitespace. An example is the following which generates n random
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(uniform) numbers.
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#+source: rand(n)
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#+begin_src R
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runif(n)
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#+end_src
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")
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(defvar org-babel-function-def-export-indent 4
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"When exporting a source block function, the block contents
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will be indented by this many characters. See
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`org-babel-function-def-export-name' for the definition of a
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source block function.")
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(defvar obe-marker nil)
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(defun org-babel-exp-src-blocks (body &rest headers)
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"Process src block for export. Depending on the 'export'
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headers argument in replace the source 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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(message "org-babel-exp processing...")
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(when (member (first headers) org-babel-interpreters)
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(save-excursion
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(goto-char (match-beginning 0))
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(org-babel-exp-do-export (org-babel-get-src-block-info) 'block))))
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(defun org-babel-exp-inline-src-blocks (start end)
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"Process inline src blocks between START and END for export.
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See `org-babel-exp-src-blocks' for export options, currently the
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options and are taken from `org-babel-defualt-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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(replacement (save-match-data
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(org-babel-exp-do-export info 'inline))))
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(setq end (+ end (- (length replacement) (length (match-string 1)))))
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(replace-match replacement t t nil 1)))))
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(defun org-babel-exp-lob-one-liners (start end)
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"Process #+lob (Library of Babel) calls between START and END for export.
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See `org-babel-exp-src-blocks' 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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(let (replacement)
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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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(setq replacement
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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-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 (org-babel-lob-get-info) " "))))))
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'lob)))
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(setq end (+ end (- (length replacement) (length (match-string 0)))))
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(replace-match replacement t t)))))
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(defun org-babel-exp-do-export (info type)
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(case (intern (or (cdr (assoc :exports (third info))) "code"))
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('none "")
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('code (org-babel-exp-code info type))
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('results (org-babel-exp-results info type))
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('both (concat (org-babel-exp-code info type)
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"\n\n"
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(org-babel-exp-results info type)))))
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(defun org-babel-exp-code (info type)
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(let ((lang (first info))
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(body (second info))
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(switches (fourth info))
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(name (fifth info))
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(args (mapcar #'cdr
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(remove-if-not (lambda (el) (eq :var (car el))) (third info)))))
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(case type
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('inline (format "=%s=" body))
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('block
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(let ((str (format "#+BEGIN_SRC %s %s\n%s%s#+END_SRC\n" lang switches body
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(if (string-match "\n$" body) "" "\n"))))
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(add-text-properties 0 (length str)
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(list 'org-caption
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(format "%s(%s)"
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name (mapconcat #'identity args ", ")))
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str) str))
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('lob
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(let ((call-line (and (string-match "results=" (car args))
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(substring (car args) (match-end 0)))))
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(cond
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((eq backend 'html)
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(format "\n#+HTML: <label class=\"org-src-name\">%s</label>\n" call-line))
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((t (format ": %s\n" call-line)))))))))
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(defun org-babel-exp-results (info type)
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(let ((lang (first info))
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(body (second info))
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(params
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;; lets ensure that we lookup references in the original file
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(mapcar (lambda (pair)
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(if (and org-current-export-file
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(eq (car pair) :var)
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(string-match org-babel-ref-split-regexp (cdr pair)))
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`(:var . ,(concat (match-string 1 (cdr pair))
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"=" org-current-export-file
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":" (match-string 2 (cdr pair))))
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pair))
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(third info))))
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(case type
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('inline
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(let ((raw (org-babel-execute-src-block
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nil info '((:results . "silent"))))
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(result-params (split-string (cdr (assoc :results params)))))
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(cond ;; respect the value of the :results header argument
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((member "file" result-params)
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(org-babel-result-to-file raw))
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((or (member "raw" result-params) (member "org" result-params))
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raw)
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((member "code" result-params)
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(format "src_%s{%s}" lang raw))
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(t
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(if (stringp raw)
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(if (= 0 (length raw)) "=(no results)="
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(format "=%s=" raw))
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(format "=%S=" raw))))))
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('block
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(org-babel-execute-src-block
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nil nil (org-babel-merge-params params '((:results . "replace"))))
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"")
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('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
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nil (list lang body (org-babel-merge-params params '((:results . "replace"))))) "")))))
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(provide 'org-babel-exp)
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;;; org-babel-exp.el ends here
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