support absolute path

lib/koa.js

@@ -30,6 +30,7 @@ function merge(target, source) {
 // option.extname
 // option.
 module.exports = function (app, option) {
+    option = option || {};
     var views = option.views;
     var extname = option.extname || 'xtpl';
 
@@ -41,7 +42,15 @@ module.exports = function (app, option) {
         merge(context, this.state || {});
         merge(context, data);
 
-        var html = yield xtplRender(Path.resolve(views, path + '.' + extname), context, option);
+        var filePath;
+
+        if(path.charAt(0) === '/') {
+            filePath = path;
+        } else {
+            filePath = Path.resolve(views, path + '.' + extname);
+        }
+
+        var html = yield xtplRender(filePath, context, option);
         if (!opt || opt.write !== false) {
             this.type = 'html';
             this.body = html;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "xtpl",
-  "version": "3.2.0",
+  "version": "3.3.0",
   "description": "nodejs wrapper around xtemplate engine",
   "author": "yiminghe <yiminghe@gmail.com>",
   "contributors": [

tests/specs/index.js

@@ -79,4 +79,23 @@ describe('xtpl', function () {
           .expect(200)
           .expect('<&gt;foo20', done);
     });
+
+    it('works for koa and absolute path', function (done) {
+        var app = xtplKoa(require('koa')());
+        app.use(function *() {
+            this.state.name = 'foo';
+            this.state.age = 18;
+
+            var html = yield* this.render(path.resolve(__dirname, '../fixture/main.xtpl'), {
+                y: '<',
+                x: '>',
+                age: 20
+            });
+            expect(html).to.be('<&gt;foo20');
+        });
+        request(app.listen())
+          .get('/')
+          .expect(200)
+          .expect('<&gt;foo20', done);
+    });
 });