From 72f200ac5696260b98d556af62fe655ef51a4b4a Mon Sep 17 00:00:00 2001
From: Manu Mtz-Almeida <manu.valladolid@gmail.com>
Date: Thu, 21 May 2015 16:59:58 +0200
Subject: [PATCH] Adds StaticFile()

---
 routergroup.go      | 12 ++++++++++++
 routergroup_test.go | 11 +++++++++++
 2 files changed, 23 insertions(+)

diff --git a/routergroup.go b/routergroup.go
index c8907fcf..fe5a2fea 100644
--- a/routergroup.go
+++ b/routergroup.go
@@ -7,6 +7,7 @@ package gin
 import (
 	"net/http"
 	"path"
+	"strings"
 )
 
 // Used internally to configure router, a RouterGroup is associated with a prefix
@@ -100,6 +101,17 @@ func (group *RouterGroup) Any(relativePath string, handlers ...HandlerFunc) {
 	group.handle("TRACE", relativePath, handlers)
 }
 
+func (group *RouterGroup) StaticFile(relativePath, filepath string) {
+	if strings.Contains(relativePath, ":") || strings.Contains(relativePath, "*") {
+		panic("URL parameters can not be used when serving a static file")
+	}
+	handler := func(c *Context) {
+		c.File(filepath)
+	}
+	group.GET(relativePath, handler)
+	group.HEAD(relativePath, handler)
+}
+
 // Static serves files from the given file system root.
 // Internally a http.FileServer is used, therefore http.NotFound is used instead
 // of the Router's NotFound handler.
diff --git a/routergroup_test.go b/routergroup_test.go
index 6500b22f..1ec70ddb 100644
--- a/routergroup_test.go
+++ b/routergroup_test.go
@@ -87,3 +87,14 @@ func performRequestInGroup(t *testing.T, method string) {
 	assert.Equal(t, w.Code, 400)
 	assert.Equal(t, w.Body.String(), "the method was "+method+" and index 1")
 }
+
+func TestRouterGroupInvalidStaticFile(t *testing.T) {
+	router := New()
+	assert.Panics(t, func() {
+		router.StaticFile("/path/:param", "favicon.ico")
+	})
+
+	assert.Panics(t, func() {
+		router.StaticFile("/path/*param", "favicon.ico")
+	})
+}