Use base url setting.

lib/index.js

@@ -1,17 +1,18 @@
-var builder = require('xmlbuilder');
+var url = require('url')
+  , builder = require('xmlbuilder');
 
 // TODO: Implement support for sitemaps in directories.
 
 // http://www.sitemaps.org/protocol.html
 // http://support.google.com/webmasters/bin/answer.py?hl=en&answer=156184&topic=8476&ctx=topic
 
-exports = module.exports = function(host) {
-  // strip trailing slash
-  if ('/' == host[host.length - 1]) {
-    host = host.slice(0, -1);
-  }
+exports = module.exports = function() {
 
   return function sitemap(site, pages) {
+    if (!site.get('base url')) throw new Error('sitemap requires "base url" setting');
+
+    var uri = url.parse(site.get('base url'));
+
     site.page('/sitemap.xml', function(page, next) {
       page.sitemap = true;
 
@@ -22,10 +23,12 @@ exports = module.exports = function(host) {
         , pg;
       for (var i = 0, len = paths.length; i < len; i++) {
         pg = pages[paths[i]];
-        if (pg.sitemap || pg.path == '/robots.txt') { continue; }
+        if (pg.sitemap || pg.path == '/.htaccess' || pg.path == '/robots.txt') { continue; }
+
+        uri.pathname = pg.path;
 
         sm.e('url')
-            .e('loc', host + pg.path);
+            .e('loc', url.format(uri));
       }
 
       var xml = sm.end({ pretty: true });