fix #153

已经支持了任意定义变量的路由形式，具体的使用请参考：

func TestManyRoute(t *testing.T) {

	r, _ := http.NewRequest("GET", "/beego32-12.html", nil)
	w := httptest.NewRecorder()

	handler := NewControllerRegistor()
	handler.Add("/beego:id([0-9]+)-:page([0-9]+).html", &TestController{})
	handler.ServeHTTP(w, r)

	id := r.URL.Query().Get(":id")
	page := r.URL.Query().Get(":page")

	if id != "32" {
		t.Errorf("url param set to [%s]; want [%s]", id, "32")
	}
	if page != "12" {
		t.Errorf("url param set to [%s]; want [%s]", page, "12")
	}
}

router.go

@@ -94,6 +94,47 @@ func (p *ControllerRegistor) Add(pattern string, c ControllerInterface, mappingM
 				j++
 			}
 		}
+		//url like someprefix:id(xxx).html
+		if strings.Contains(part, ":") && strings.Contains(part, "(") && strings.Contains(part, ")") {
+			var out []rune
+			var start bool
+			var startexp bool
+			var param []rune
+			var expt []rune
+			for _, v := range part {
+				if start {
+					if v != '(' {
+						param = append(param, v)
+						continue
+					}
+				}
+				if startexp {
+					if v != ')' {
+						expt = append(expt, v)
+						continue
+					}
+				}
+				if v == ':' {
+					param = make([]rune, 0)
+					param = append(param, ':')
+					start = true
+				} else if v == '(' {
+					startexp = true
+					start = false
+					params[j] = string(param)
+					j++
+					expt = make([]rune, 0)
+					expt = append(expt, '(')
+				} else if v == ')' {
+					startexp = false
+					expt = append(expt, ')')
+					out = append(out, expt...)
+				} else {
+					out = append(out, v)
+				}
+			}
+			parts[i] = string(out)
+		}
 	}
 	reflectVal := reflect.ValueOf(c)
 	t := reflect.Indirect(reflectVal).Type()

router_test.go

@@ -69,6 +69,26 @@ func TestRouteOk(t *testing.T) {
 	}
 }
 
+func TestManyRoute(t *testing.T) {
+
+	r, _ := http.NewRequest("GET", "/beego32-12.html", nil)
+	w := httptest.NewRecorder()
+
+	handler := NewControllerRegistor()
+	handler.Add("/beego:id([0-9]+)-:page([0-9]+).html", &TestController{})
+	handler.ServeHTTP(w, r)
+
+	id := r.URL.Query().Get(":id")
+	page := r.URL.Query().Get(":page")
+
+	if id != "32" {
+		t.Errorf("url param set to [%s]; want [%s]", id, "32")
+	}
+	if page != "12" {
+		t.Errorf("url param set to [%s]; want [%s]", page, "12")
+	}
+}
+
 func TestNotFound(t *testing.T) {
 	r, _ := http.NewRequest("GET", "/", nil)
 	w := httptest.NewRecorder()