Add support for plugin renderers to replace standard renderers

This patch is the fourth in a series aimed at making it easier for DW to allow
plugins to modify the standard handling of line-breaks.

It adds:
- new config setting 'renderer_xhtml', default value 'xhtml'
- new renderer method 'reset()' which is used by reusable renderers when used
  to render second and subsequent data. (*)

An extra step has been added to the renderer selection process.
- check $conf["renderer_$mode] for renderer name.  If it doesn't exist use $mode as
  the renderer name.

(*) It maybe that the 'document_start()' method can be used for this.  However the
current xhtml does not correctly reset itself for reuse.

darcs-hash:20080312005647-f07c6-ff2cb960c05927f5c6f3e916a364fcad470c2ce3.gz

1 files changed, 4 insertions, 0 deletions

diff --git a/inc/parser/renderer.php b/inc/parser/renderer.php
index aa4da9dc1..92bbf51fb 100644
--- a/inc/parser/renderer.php
+++ b/inc/parser/renderer.php
@@ -29,6 +29,10 @@ class Doku_Renderer extends DokuWiki_Plugin {
     var $entities = array();
     var $interwiki = array();
 
+    // allows renderer to be used again, clean out any per-use values
+    function reset() {
+    }
+
     function nocache() {
         $this->info['cache'] = false;
     }