--- a/MoinMoin/macro/SystemInfo.py	Mon Jul 17 13:25:37 2006 +0200
+++ b/MoinMoin/macro/SystemInfo.py	Mon Jul 17 13:27:35 2006 +0200
@@ -112,7 +112,9 @@
         ', '.join(wikiutil.wikiPlugins('parser', Macro.cfg)) or nonestr)
 
     state = (_('Disabled'), _('Enabled'))
-    row(_('Xapian search'), state[request.cfg.xapian_search])
+    from MoinMoin.search.builtin import Search
+    row(_('Xapian search'), '%s, %sactive' % (state[request.cfg.xapian_search],
+                not Search._xapianIndex(request) and 'not ' or ''))
 
     row(_('Active threads'), t_count or 'N/A')
     buf.write(u'</dl>')

--- a/MoinMoin/search/Xapian.py	Mon Jul 17 13:25:37 2006 +0200
+++ b/MoinMoin/search/Xapian.py	Mon Jul 17 13:27:35 2006 +0200
@@ -188,6 +188,10 @@
         else:
             return os.path.join(self.request.cfg.cache_dir, 'xapian')
 
+    def exists(self):
+        """ Check if the Xapian index exists """
+        return BaseIndex.exists(self) and os.listdir(self.dir)
+
     def _search(self, query):
         """ read lock must be acquired """
         while True:
@@ -238,12 +242,6 @@
         """
         fs_rootpage = 'FS' # XXX FS hardcoded
 
-        # rebuilding the DB: delete it and add everything
-        if mode == 'rebuild':
-            for f in os.listdir(self.dir):
-                os.unlink(f)
-            mode = 'add'
-
         try:
             wikiname = request.cfg.interwikiname or 'Self'
             itemid = "%s:%s" % (wikiname, os.path.join(fs_rootpage, filename))
@@ -440,6 +438,13 @@
         When called in a new thread, lock is acquired before the call,
         and this method must release it when it finishes or fails.
         """
+
+        # rebuilding the DB: delete it and add everything
+        if mode == 'rebuild':
+            for f in os.listdir(self.dir):
+                os.unlink(os.path.join(self.dir, f))
+            mode = 'add'
+
         try:
             writer = xapidx.Index(self.dir, True)
             writer.configure(self.prefixMap, self.indexValueMap)

--- a/MoinMoin/search/builtin.py	Mon Jul 17 13:25:37 2006 +0200
+++ b/MoinMoin/search/builtin.py	Mon Jul 17 13:27:35 2006 +0200
@@ -373,6 +373,18 @@
     # ----------------------------------------------------------------
     # Private!
 
+    def _xapianIndex(request):
+        try:
+            from MoinMoin.search.Xapian import Index
+            index = Index(request)
+        except ImportError:
+            index = None
+
+        if index and index.exists():
+            return index
+
+    _xapianIndex = staticmethod(_xapianIndex)
+
     def _xapianSearch(self):
         """ Search using Xapian
         
@@ -380,13 +392,8 @@
         return moin search in those pages.
         """
         pages = None
-        try:
-            from MoinMoin.search.Xapian import Index
-            index = Index(self.request)
-        except ImportError:
-            index = None
-        
-        if index and index.exists(): #and self.query.xapian_wanted():
+        index = self._xapianIndex(self.request)
+        if index: #and self.query.xapian_wanted():
             self.request.clock.start('_xapianSearch')
             try:
                 from MoinMoin.support import xapwrap

--- a/docs/CHANGES.fpletz	Mon Jul 17 13:25:37 2006 +0200
+++ b/docs/CHANGES.fpletz	Mon Jul 17 13:27:35 2006 +0200
@@ -149,3 +149,7 @@
     * Comment read_lock code from BaseIndex (should not be needed)
     * Support complete rebuild of the database (delete and add)
 
+2006-07-17
+    * SystemInfo macro now also shows if xapian is being used (index
+      available) and more graceful fallback to moinSearch
+