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+;;; org-special-blocks.el --- Turn blocks into LaTeX envs and HTML divs
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+
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+;; Copyright (C) 2009 Chris Gray
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+
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+;; Author: Chris Gray <chrismgray@gmail.com>
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+
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+;; This file is not currently part of GNU Emacs.
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+
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+;; This program is free software; you can redistribute it and/or
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+;; modify it under the terms of the GNU General Public License as
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+;; published by the Free Software Foundation; either version 2, or (at
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+;; your option) any later version.
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+
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+;; This program is distributed in the hope that it will be useful, but
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+;; WITHOUT ANY WARRANTY; without even the implied warranty of
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+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+;; 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 this program ; see the file COPYING. If not, write to
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+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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+;; Boston, MA 02111-1307, USA.
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+
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+;;; Commentary:
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+;;
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+
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+;; This package generalizes the #+begin_foo and #+end_foo tokens.
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+
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+;; To use, put the following in your init file:
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+;;
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+;; (require 'org-special-blocks)
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+
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+;; The tokens #+begin_center, #+begin_verse, etc. existed previously.
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+;; This package generalizes them (at least for the LaTeX and html
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+;; exporters). When a #+begin_foo token is encountered by the LaTeX
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+;; exporter, it is expanded into \begin{foo}. The text inside the
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+;; environment is not protected, as text inside environments generally
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+;; is. When #+begin_foo is encountered by the html exporter, a div
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+;; with class foo is inserted into the HTML file. It is up to the
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+;; user to add this class to his or her stylesheet if this div is to
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+;; mean anything.
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+
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+(defun org-special-blocks-make-special-cookies ()
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+ "Adds special cookies when #+begin_foo and #+end_foo tokens are
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+seen. This is run after a few special cases are taken care of."
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+ (when (or htmlp latexp)
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+ (goto-char (point-min))
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+ (while (re-search-forward "^#\\+\\(begin\\|end\\)_\\(.*\\)$" nil t)
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+ (replace-match
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+ (if (equal (downcase (match-string 1)) "begin")
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+ (concat "ORG-" (match-string 2) "-START")
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+ (concat "ORG-" (match-string 2) "-END"))
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+ t t))))
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+
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+(add-hook 'org-export-preprocess-after-blockquote-hook
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+ 'org-special-blocks-make-special-cookies)
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+
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+(defun org-special-blocks-convert-latex-special-cookies ()
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+ "Converts the special cookies into LaTeX blocks."
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+ (goto-char (point-min))
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+ (while (re-search-forward "^ORG-\\(.*\\)-\\(START\\|END\\)$" nil t)
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+ (replace-match
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+ (if (equal (match-string 2) "START")
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+ (concat "\\begin{" (match-string 1) "}")
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+ (concat "\\end{" (match-string 1) "}"))
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+ t t)))
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+
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+(add-hook 'org-export-latex-after-blockquotes-hook
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+ 'org-special-blocks-convert-latex-special-cookies)
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+
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+(defun org-special-blocks-convert-html-special-cookies ()
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+ "Converts the special cookies into div blocks."
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+ ;; Uses the dynamically-bound variable `line'.
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+ (when (string-match "^ORG-\\(.*\\)-\\(START\\|END\\)$" line)
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+; (org-close-par-maybe)
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+ (message "%s" (match-string 1))
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+ (if (equal (match-string 2 line) "START")
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+ (insert "<div class=\"" (match-string 1 line) "\">\n")
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+ (insert "</div>\n"))
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+ (throw 'nextline nil)))
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+
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+(add-hook 'org-export-html-after-blockquotes-hook
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+ 'org-special-blocks-convert-html-special-cookies)
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+
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+(provide 'org-special-blocks)
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+
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+;;; org-special-blocks.el ends here
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Carsten Dominik