Added slash middleware

Signed-off-by: Vishal Rana <[email protected]>

middleware/auth_test.go

@@ -18,22 +18,22 @@ func TestBasicAuth(t *testing.T) {
 		}
 		return false
 	}
-	b := BasicAuth(fn)
+	ba := BasicAuth(fn)
 
 	//-------------------
 	// Valid credentials
 	//-------------------
 
 	auth := Basic + " " + base64.StdEncoding.EncodeToString([]byte("joe:secret"))
 	req.Header.Set(echo.Authorization, auth)
-	if b(c) != nil {
+	if ba(c) != nil {
 		t.Error("basic auth should pass")
 	}
 
 	// Case insensitive
 	auth = "basic " + base64.StdEncoding.EncodeToString([]byte("joe:secret"))
 	req.Header.Set(echo.Authorization, auth)
-	if b(c) != nil {
+	if ba(c) != nil {
 		t.Error("basic auth should ignore case and pass")
 	}
 
@@ -43,31 +43,31 @@ func TestBasicAuth(t *testing.T) {
 
 	auth = Basic + "  " + base64.StdEncoding.EncodeToString([]byte(" joe: secret"))
 	req.Header.Set(echo.Authorization, auth)
-	b = BasicAuth(fn)
-	if b(c) == nil {
+	ba = BasicAuth(fn)
+	if ba(c) == nil {
 		t.Error("basic auth should fail")
 	}
 
 	// Invalid header
 	auth = base64.StdEncoding.EncodeToString([]byte(" :secret"))
 	req.Header.Set(echo.Authorization, auth)
-	b = BasicAuth(fn)
-	if b(c) == nil {
+	ba = BasicAuth(fn)
+	if ba(c) == nil {
 		t.Error("basic auth should fail for invalid scheme")
 	}
 
 	// Invalid scheme
 	auth = "Base " + base64.StdEncoding.EncodeToString([]byte(" :secret"))
 	req.Header.Set(echo.Authorization, auth)
-	b = BasicAuth(fn)
-	if b(c) == nil {
+	ba = BasicAuth(fn)
+	if ba(c) == nil {
 		t.Error("basic auth should fail for invalid scheme")
 	}
 
 	// Empty auth header
 	req.Header.Set(echo.Authorization, "")
-	b = BasicAuth(fn)
-	if b(c) == nil {
+	ba = BasicAuth(fn)
+	if ba(c) == nil {
 		t.Error("basic auth should fail for empty auth header")
 	}
 }

middleware/slash.go

@@ -0,0 +1,28 @@
+package middleware
+
+import "github.com/labstack/echo"
+
+// StripTrailingSlash removes trailing slash from request path.
+func StripTrailingSlash() echo.HandlerFunc {
+	return func(c *echo.Context) *echo.HTTPError {
+		p := c.Request.URL.Path
+		l := len(p)
+		if p[l-1] == '/' {
+			c.Request.URL.Path = p[:l-1]
+		}
+		return nil
+	}
+}
+
+// RedirectToSlash redirects requests without trailing slash path to trailing slash
+// path with status code.
+func RedirectToSlash(code int) echo.HandlerFunc {
+	return func(c *echo.Context) (he *echo.HTTPError) {
+		p := c.Request.URL.Path
+		l := len(p)
+		if p[l-1] != '/' {
+			c.Redirect(code, p+"/")
+		}
+		return nil
+	}
+}

middleware/slash_test.go

@@ -0,0 +1,33 @@
+package middleware
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/labstack/echo"
+)
+
+func TestStripTrailingSlash(t *testing.T) {
+	req, _ := http.NewRequest(echo.GET, "/users/", nil)
+	res := &echo.Response{Writer: httptest.NewRecorder()}
+	c := echo.NewContext(req, res, echo.New())
+	StripTrailingSlash()(c)
+	if c.Request.URL.Path != "/users" {
+		t.Error("it should strip the trailing slash")
+	}
+}
+
+func TestRedirectToSlash(t *testing.T) {
+	req, _ := http.NewRequest(echo.GET, "/users", nil)
+	res := &echo.Response{Writer: httptest.NewRecorder()}
+	c := echo.NewContext(req, res, echo.New())
+	RedirectToSlash(301)(c)
+	println(c.Response.Header().Get("Location"))
+	if res.Status() != 301 {
+		t.Errorf("status code should be 301, found %d", res.Status())
+	}
+	if c.Response.Header().Get("Location") != "/users/" {
+		t.Error("Location header should be /users/")
+	}
+}

website/docs/guide.md

@@ -87,7 +87,7 @@ types of handlers.
 
 ### Path parameter
 
-URL path parameters can be extracted either by name `echo.Context.Param(name string) string`
+Request path parameters can be extracted either by name `echo.Context.Param(name string) string`
 or by index `echo.Context.P(i uint8) string`. Getting parameter by index gives a
 slightly better performance.
 
@@ -194,7 +194,7 @@ Sends an HTML HTTP response with status code.
 ### Static files
 
 `echo.Static(path, root string)` serves static files. For example, code below serves
-files from directory `public/scripts` for any URL path starting with `/scripts/`.
+files from directory `public/scripts` for any request path starting with `/scripts/`.
 
 ```go
 e.Static("/scripts/", "public/scripts")
@@ -203,25 +203,25 @@ e.Static("/scripts/", "public/scripts")
 ### Serving a file
 
 `echo.ServeFile(path, file string)` serves a file. For example, code below serves
-file `welcome.html` for URL path `/welcome`.
+file `welcome.html` for request path `/welcome`.
 
 ```go
 e.ServeFile("/welcome", "welcome.html")
 ```
 
 ### Serving an index file
 
-`echo.Index(file string)` serves an index file. For example, code below serves file
-`index.html`.
+`echo.Index(file string)` serves root index page - `GET /`. For example, code below
+serves root index page from file `public/index.html`.
 
 ```go
-e.Index("index.html")
+e.Index("public/index.html")
 ```
 
 ### Serving favicon 
 
 `echo.Favicon(file string)` serves default favicon - `GET /favicon.ico`. For example,
-code below serves file `favicon.ico`.
+code below serves favicon from file `public/favicon.ico`.
 
 ```go
 e.Index("public/favicon.ico")