New file: Taru Karttunen's org-exp-bibtex.el

3 files changed, 90 insertions, 1 deletions

diff --git a/contrib/README b/contrib/README
index 5236daa..ac7b1ac 100644
--- a/contrib/README
+++ b/contrib/README
@@ -20,7 +20,8 @@ org-elisp-symbol.el      --- Org links to emacs-lisp symbols
 org-eval.el              --- The <lisp> tag, adapted from Muse
 org-eval-light.el        --- Evaluate in-buffer code on demand
 org-expiry.el 	         --- Expiry mechanism for Org entries
-org-exp-blocks	         --- Pre-process blocks when exporting org files
+org-exp-bibtex.el        --- Export citations to LaTeX and HTML
+org-exp-blocks.el        --- Pre-process blocks when exporting org files
 org-indent.el            --- Dynamic outline indentation (does not really work)
 org-interactive-query.el --- Interactive modification of tags query
 org-mairix.el 	         --- Hook mairix search into Org for different MUAs
diff --git a/contrib/lisp/org-exp-bibtex.el b/contrib/lisp/org-exp-bibtex.el
new file mode 100644
index 0000000..d27fd59
--- /dev/null
+++ b/contrib/lisp/org-exp-bibtex.el
@@ -0,0 +1,87 @@
+;;; org-exp-bibtex.el --- Export bibtex fragments
+
+;; Copyright (C) 2009 Taru Karttunen
+
+;; Author: Taru Karttunen <taruti@taruti.net >
+
+;; This file is not currently part of GNU Emacs.
+
+;; This program 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 2, or (at
+;; your option) any later version.
+
+;; This program 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 this program ; see the file COPYING.  If not, write to
+;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+;;
+;; This is an utility to handle BibTeX export to both LaTeX and html
+;; exports. It uses the bibtex2html software from
+;; http://www.lri.fr/~filliatr/bibtex2html/
+;;
+;; The usage is as follows:
+;; #+BIBLIOGRAPHY: bibfilebasename stylename
+;; e.g. given foo.bib and using style plain:
+;; #+BIBLIOGRAPHY: foo plain
+
+;; For LaTeX export this simply inserts the lines
+;; \bibliographystyle{plain}
+;; \bibliography{foo}
+;; into the tex-file when exporting.
+
+;; For Html export it:
+;; 1) converts all \cite{foo} to links to the bibliography
+;; 2) creates a foo.html and foo_bib.html
+;; 3) includes the contents of foo.html in the exported html file
+
+
+(defun org-export-bibtex-preprocess ()
+  "Export all BibTeX."
+  (interactive)
+  (save-window-excursion
+    (setq oebp-cite-plist '())
+    ;; Convert #+BIBLIOGRAPHY: name style
+    (goto-char (point-min))
+    (while (re-search-forward "^#\\+BIBLIOGRAPHY:\\s-+\\(\\w+\\)\\s-+\\(\\w+\\)" nil t)
+      (let ((file  (match-string 1))
+	    (style (match-string 2)))
+	(replace-match
+	(cond
+	 (htmlp ;; We are exporting to HTML
+	  (call-process "bibtex2html" nil nil nil "--nodoc"  "--style" style "--no-header" (concat file ".bib"))
+	  (with-temp-buffer
+	    (save-match-data
+	      (insert-file-contents (concat file ".html"))
+	      (goto-char (point-min))
+	      (while (re-search-forward "a name=\"\\(\\w+\\)\">\\(\\w+\\)" nil t)
+		(setq oebp-cite-plist (cons (cons (match-string 1) (match-string 2)) oebp-cite-plist)))
+	      (goto-char (point-min))
+	      (while (re-search-forward "<hr>" nil t)
+		(replace-match "<hr/>"))
+	      (concat "\n#+BEGIN_HTML\n<div class=\"bibliography\">\n" (buffer-string) "\n</div>\n#+END_HTML\n"))))
+	 (latexp ;; Latex export
+	  (concat "\n#+LATEX: \\\\bibliographystyle{" style "}"
+		  "\n#+LATEX: \\\\bibliography{" file "}\n"))))))
+    ;; Convert cites to links in html
+    (goto-char (point-min))
+    (when htmlp
+      (while (re-search-forward "\\\\cite{\\(\\w+\\)}" nil t)
+	(let* ((cn (match-string 1))
+	       (cv (assoc cn oebp-cite-plist)))
+	  (replace-match 
+	   (concat "\[_{}[[" cn "][" (if cv (cdr cv) cn) "]]\]")))))))
+
+
+(add-hook 'org-export-preprocess-hook 'org-export-bibtex-preprocess)
+
+(provide 'org-exp-bibtex)
+
+;;; org-exp-bibtex.el ends here
diff --git a/lisp/org.el b/lisp/org.el
index 85f4ec5..1ae78cd 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -187,6 +187,7 @@ to add the symbol `xyz', and the package must have a call to
 	(const :tag "C  eval:              Include command output as text" org-eval)
 	(const :tag "C  eval-light:        Evaluate inbuffer-code on demand" org-eval-light)
 	(const :tag "C  expiry:            Expiry mechanism for Org entries" org-expiry)
+	(const :tag "C  exp-bibtex:        Export citations using BibTeX" org-exp-bibtex)
 	(const :tag "C  exp-blocks:        Pre-process blocks for export" org-exp-blocks)
 	(const :tag "C  interactive-query: Interactive modification of tags query" org-interactive-query)
 	(const :tag "C  mairix:            Hook mairix search into Org for different MUAs" org-mairix)