Re: ox-bibtex works well with \cite{} entries but not with cite: links

[Nicolas Goaziou <n.goaziou@gmail.com>]

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Hello,

Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> as noted a while back, I use cite:bibref type links in org to write
> LaTeX papers.  I have defined the cite link type as follows:
>
> #+begin_src emacs-lisp
> (org-add-link-type "cite" 'ebib
>                    (lambda (path desc format)
>                      (cond
>                       ((eq format 'latex)
>                        (format "\\cite{%s}" path)))))
> #+end_src
>
> This works really well for LaTeX export.  However, it doesn't work at
> all for html export.  Obviously, I can add an html target but this
> would only allow me a simple formatting capability.
>
> I have played around with ox-bibtex.  This works well for both LaTeX and
> HTML exports so long as I use \cite{bibref} directly in my org text
> which is not as elegant.

Would the following patch work?


Regards,

-- 
Nicolas Goaziou

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From fb23a30ba89ad34eb5f4cbdad7c0ffbb2f9e16b6 Mon Sep 17 00:00:00 2001
From: Nicolas Goaziou <n.goaziou@gmail.com>
Date: Mon, 8 Jul 2013 15:55:12 +0200
Subject: [PATCH] ox-bibtex: Add [[cite:...]] links support

* contrib/lisp/ox-bibtex.el (org-latex-link, org-html-link): New
  functions.
---
 contrib/lisp/ox-bibtex.el | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/contrib/lisp/ox-bibtex.el b/contrib/lisp/ox-bibtex.el
index 3e6f8e6..2ebbdd0 100644
--- a/contrib/lisp/ox-bibtex.el
+++ b/contrib/lisp/ox-bibtex.el
@@ -64,10 +64,19 @@
 ;; into the TeX file when exporting.
 ;;
 ;; For HTML export it:
-;; 1) converts all \cite{foo} to links to the bibliography,
+;; 1) converts all \cite{foo} and [[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.
+;;
+;; For LaTeX export it:
+;; 1) converts all [[cite:foo]] to \cite{foo}.
+
+;; Initialization
 
+(require 'ox-html)
+(require 'ox-latex)
+(org-add-link-type "cite" 'ebib)
 
 ;;; Internal Functions
 
@@ -139,7 +148,16 @@ Fallback to `latex' back-end for other keywords."
                 (concat (and style (format "\\bibliographystyle{%s}\n" style))
                         (format "\\bibliography{%s}" file))))))))
 
+(defadvice org-latex-link (around bibtex-link)
+  "Translate \"cite\" type links into LaTeX syntax.
+Fallback to `latex' back-end for other keywords."
+  (let ((link (ad-get-arg 0)))
+    (if (not (equal (org-element-property :type link) "cite")) ad-do-it
+      (setq ad-return-value
+	    (format "\\cite{%s}" (org-element-property :path link))))))
+
 (ad-activate 'org-latex-keyword)
+(ad-activate 'org-latex-link)
 
 
 \f
@@ -176,8 +194,25 @@ Fallback to `html' back-end for other keywords."
              (org-split-string (org-bibtex-get-citation-key fragment) ",")
              "")))))
 
+(defadvice org-html-link (around bibtex-link)
+  "Translate \"cite:\" type links into HTML syntax.
+Fallback to `html' back-end for other types."
+  (let ((link (ad-get-arg 0)))
+    (if (not (equal (org-element-property :type link) "cite")) ad-do-it
+      (setq ad-return-value
+	    (mapconcat
+	     (lambda (key)
+	       (format "[<a href=\"#%s\">%s</a>]"
+		       key
+		       (or (cdr (assoc key org-bibtex-html-entries-alist))
+			   key)))
+	     (org-split-string (org-element-property :path link)
+			       "[ \t]*,[ \t]*")
+	     "")))))
+
 (ad-activate 'org-html-keyword)
 (ad-activate 'org-html-latex-fragment)
+(ad-activate 'org-html-link)
 
 
 ;;;; Filter
-- 
1.8.3.2