[PATCH] Allow functions for HTML export preamble and postamble

[Andreas Rottmann <a.rottmann@gmx.at>]

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Hi!

Well, the subject says it all -- attached is a rough patch to allow more
flexibility with the HTML export; I use it like this:

    (defun rotty/homepage-preamble (opt-plist)
      (insert "<div id=\"header\">")
      (insert
       "
    <div id=\"navbar\">
    <a class=\"menu\" href=\"/\">Home</a>
    | <a class=\"menu\" href=\"/Writings.html\">Writings</a>
    | <a class=\"menu\" href=\"/Software.html\">Software</a>
    | <a class=\"menu\" href=\"/blog/\">Blog</a>
    </div>
    ")
      (insert (format 
               "<h1 class=\"title\"><a href=\"/\">rotty</a> &gt; %s</h1>\n"
               (plist-get opt-plist :title)))
      (insert "</div>\n")
      (insert "<div id=\"inner\">\n"))

Note that this is my first real patch to org-mode, so be gentle ;-).


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From: Andreas Rottmann <a.rottmann@gmx.at>
Subject: [PATCH] Allow functions for {pre/post}amble


---
 lisp/org-html.el |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/lisp/org-html.el b/lisp/org-html.el
index ee72065..be4ddfd 100644
--- a/lisp/org-html.el
+++ b/lisp/org-html.el
@@ -606,6 +606,7 @@ PUB-DIR is set, use this as the publishing directory."
 			       (file-name-sans-extension
 				(file-name-nondirectory buffer-file-name)))
 			  "UNTITLED"))
+         (custom-plist (org-combine-plists (list :title title) opt-plist))
 	 (html-table-tag (plist-get opt-plist :html-table-tag))
 	 (quote-re0   (concat "^[ \t]*" org-quote-string "\\>"))
 	 (quote-re    (concat "^\\(\\*+\\)\\([ \t]+" org-quote-string "\\>\\)"))
@@ -745,7 +746,7 @@ lang=\"%s\" xml:lang=\"%s\">
 		 date author description keywords
 		 style))
 
-	(insert (or (plist-get opt-plist :preamble) ""))
+        (org-export-html-insert-plist-item opt-plist :preamble custom-plist)
 
 	(when (plist-get opt-plist :auto-preamble)
 	  (if title (insert (format org-export-html-title-format
@@ -1372,7 +1373,7 @@ lang=\"%s\" xml:lang=\"%s\">
 
 	(if org-export-html-with-timestamp
 	    (insert org-export-html-html-helper-timestamp))
-	(insert (or (plist-get opt-plist :postamble) ""))
+        (org-export-html-insert-plist-item opt-plist :postamble custom-plist)
 	(insert "\n</div>\n</body>\n</html>\n"))
 
       (unless (plist-get opt-plist :buffer-will-be-killed)
@@ -1425,6 +1426,14 @@ lang=\"%s\" xml:lang=\"%s\">
 	    (kill-buffer (current-buffer)))
 	(current-buffer)))))
 
+(defun org-export-html-insert-plist-item (plist key &rest args)
+  (let ((item (plist-get plist key)))
+    (cond ((functionp item) 
+           (apply item args))
+          (item
+           (insert item)))))
+
+
 (defun org-export-html-format-href (s)
   "Make sure the S is valid as a href reference in an XHTML document."
   (save-match-data
-- 
tg: (0795e42..) t/html-export-amble-funtions (depends on: master)

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Regards, Rotty

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