Merge branch 'master' into remove-go1.6

.travis.yml

@@ -1,20 +1,18 @@
 language: go
 sudo: false
-go:
-  - 1.8.x
-  - 1.9.x
-  - 1.10.x
-  - 1.11.x
-  - 1.12.x
-  - master
 
 matrix:
   fast_finish: true
   include:
+  - go: 1.8.x
+  - go: 1.9.x
+  - go: 1.10.x
   - go: 1.11.x
     env: GO111MODULE=on
   - go: 1.12.x
     env: GO111MODULE=on
+  - go: master
+    env: GO111MODULE=on
 
 git:
   depth: 10

binding/binding_test.go

@@ -12,6 +12,7 @@ import (
 	"mime/multipart"
 	"net/http"
 	"strconv"
+	"strings"
 	"testing"
 	"time"
 
@@ -57,7 +58,6 @@ type FooStructForTimeTypeFailLocation struct {
 }
 
 type FooStructForMapType struct {
-	// Unknown type: not support map
 	MapFoo map[string]interface{} `form:"map_foo"`
 }
 
@@ -303,7 +303,7 @@ func TestBindingFormInvalidName2(t *testing.T) {
 func TestBindingFormForType(t *testing.T) {
 	testFormBindingForType(t, "POST",
 		"/", "/",
-		"map_foo=", "bar2=1", "Map")
+		"map_foo={\"bar\":123}", "map_foo=1", "Map")
 
 	testFormBindingForType(t, "POST",
 		"/", "/",
@@ -508,20 +508,30 @@ func TestBindingYAMLFail(t *testing.T) {
 		`foo:\nbar`, `bar: foo`)
 }
 
-func createFormPostRequest() *http.Request {
-	req, _ := http.NewRequest("POST", "/?foo=getfoo&bar=getbar", bytes.NewBufferString("foo=bar&bar=foo"))
+func createFormPostRequest(t *testing.T) *http.Request {
+	req, err := http.NewRequest("POST", "/?foo=getfoo&bar=getbar", bytes.NewBufferString("foo=bar&bar=foo"))
+	assert.NoError(t, err)
 	req.Header.Set("Content-Type", MIMEPOSTForm)
 	return req
 }
 
-func createDefaultFormPostRequest() *http.Request {
-	req, _ := http.NewRequest("POST", "/?foo=getfoo&bar=getbar", bytes.NewBufferString("foo=bar"))
+func createDefaultFormPostRequest(t *testing.T) *http.Request {
+	req, err := http.NewRequest("POST", "/?foo=getfoo&bar=getbar", bytes.NewBufferString("foo=bar"))
+	assert.NoError(t, err)
 	req.Header.Set("Content-Type", MIMEPOSTForm)
 	return req
 }
 
-func createFormPostRequestFail() *http.Request {
-	req, _ := http.NewRequest("POST", "/?map_foo=getfoo", bytes.NewBufferString("map_foo=bar"))
+func createFormPostRequestForMap(t *testing.T) *http.Request {
+	req, err := http.NewRequest("POST", "/?map_foo=getfoo", bytes.NewBufferString("map_foo={\"bar\":123}"))
+	assert.NoError(t, err)
+	req.Header.Set("Content-Type", MIMEPOSTForm)
+	return req
+}
+
+func createFormPostRequestForMapFail(t *testing.T) *http.Request {
+	req, err := http.NewRequest("POST", "/?map_foo=getfoo", bytes.NewBufferString("map_foo=hello"))
+	assert.NoError(t, err)
 	req.Header.Set("Content-Type", MIMEPOSTForm)
 	return req
 }
@@ -535,26 +545,42 @@ func createFormMultipartRequest(t *testing.T) *http.Request {
 	assert.NoError(t, mw.SetBoundary(boundary))
 	assert.NoError(t, mw.WriteField("foo", "bar"))
 	assert.NoError(t, mw.WriteField("bar", "foo"))
-	req, _ := http.NewRequest("POST", "/?foo=getfoo&bar=getbar", body)
+	req, err := http.NewRequest("POST", "/?foo=getfoo&bar=getbar", body)
+	assert.NoError(t, err)
 	req.Header.Set("Content-Type", MIMEMultipartPOSTForm+"; boundary="+boundary)
 	return req
 }
 
-func createFormMultipartRequestFail(t *testing.T) *http.Request {
+func createFormMultipartRequestForMap(t *testing.T) *http.Request {
 	boundary := "--testboundary"
 	body := new(bytes.Buffer)
 	mw := multipart.NewWriter(body)
 	defer mw.Close()
 
 	assert.NoError(t, mw.SetBoundary(boundary))
-	assert.NoError(t, mw.WriteField("map_foo", "bar"))
-	req, _ := http.NewRequest("POST", "/?map_foo=getfoo", body)
+	assert.NoError(t, mw.WriteField("map_foo", "{\"bar\":123, \"name\":\"thinkerou\", \"pai\": 3.14}"))
+	req, err := http.NewRequest("POST", "/?map_foo=getfoo", body)
+	assert.NoError(t, err)
+	req.Header.Set("Content-Type", MIMEMultipartPOSTForm+"; boundary="+boundary)
+	return req
+}
+
+func createFormMultipartRequestForMapFail(t *testing.T) *http.Request {
+	boundary := "--testboundary"
+	body := new(bytes.Buffer)
+	mw := multipart.NewWriter(body)
+	defer mw.Close()
+
+	assert.NoError(t, mw.SetBoundary(boundary))
+	assert.NoError(t, mw.WriteField("map_foo", "3.14"))
+	req, err := http.NewRequest("POST", "/?map_foo=getfoo", body)
+	assert.NoError(t, err)
 	req.Header.Set("Content-Type", MIMEMultipartPOSTForm+"; boundary="+boundary)
 	return req
 }
 
 func TestBindingFormPost(t *testing.T) {
-	req := createFormPostRequest()
+	req := createFormPostRequest(t)
 	var obj FooBarStruct
 	assert.NoError(t, FormPost.Bind(req, &obj))
 
@@ -564,7 +590,7 @@ func TestBindingFormPost(t *testing.T) {
 }
 
 func TestBindingDefaultValueFormPost(t *testing.T) {
-	req := createDefaultFormPostRequest()
+	req := createDefaultFormPostRequest(t)
 	var obj FooDefaultBarStruct
 	assert.NoError(t, FormPost.Bind(req, &obj))
 
@@ -572,8 +598,16 @@ func TestBindingDefaultValueFormPost(t *testing.T) {
 	assert.Equal(t, "hello", obj.Bar)
 }
 
-func TestBindingFormPostFail(t *testing.T) {
-	req := createFormPostRequestFail()
+func TestBindingFormPostForMap(t *testing.T) {
+	req := createFormPostRequestForMap(t)
+	var obj FooStructForMapType
+	err := FormPost.Bind(req, &obj)
+	assert.NoError(t, err)
+	assert.Equal(t, float64(123), obj.MapFoo["bar"].(float64))
+}
+
+func TestBindingFormPostForMapFail(t *testing.T) {
+	req := createFormPostRequestForMapFail(t)
 	var obj FooStructForMapType
 	err := FormPost.Bind(req, &obj)
 	assert.Error(t, err)
@@ -589,8 +623,18 @@ func TestBindingFormMultipart(t *testing.T) {
 	assert.Equal(t, "foo", obj.Bar)
 }
 
-func TestBindingFormMultipartFail(t *testing.T) {
-	req := createFormMultipartRequestFail(t)
+func TestBindingFormMultipartForMap(t *testing.T) {
+	req := createFormMultipartRequestForMap(t)
+	var obj FooStructForMapType
+	err := FormMultipart.Bind(req, &obj)
+	assert.NoError(t, err)
+	assert.Equal(t, float64(123), obj.MapFoo["bar"].(float64))
+	assert.Equal(t, "thinkerou", obj.MapFoo["name"].(string))
+	assert.Equal(t, float64(3.14), obj.MapFoo["pai"].(float64))
+}
+
+func TestBindingFormMultipartForMapFail(t *testing.T) {
+	req := createFormMultipartRequestForMapFail(t)
 	var obj FooStructForMapType
 	err := FormMultipart.Bind(req, &obj)
 	assert.Error(t, err)
@@ -773,6 +817,17 @@ func TestFormBindingFail(t *testing.T) {
 	assert.Error(t, err)
 }
 
+func TestFormBindingMultipartFail(t *testing.T) {
+	obj := FooBarStruct{}
+	req, err := http.NewRequest("POST", "/", strings.NewReader("foo=bar"))
+	assert.NoError(t, err)
+	req.Header.Set("Content-Type", MIMEMultipartPOSTForm+";boundary=testboundary")
+	_, err = req.MultipartReader()
+	assert.NoError(t, err)
+	err = Form.Bind(req, &obj)
+	assert.Error(t, err)
+}
+
 func TestFormPostBindingFail(t *testing.T) {
 	b := FormPost
 	assert.Equal(t, "form-urlencoded", b.Name())
@@ -1109,7 +1164,8 @@ func testFormBindingForType(t *testing.T, method, path, badPath, body, badBody s
 	case "Map":
 		obj := FooStructForMapType{}
 		err := b.Bind(req, &obj)
-		assert.Error(t, err)
+		assert.NoError(t, err)
+		assert.Equal(t, float64(123), obj.MapFoo["bar"].(float64))
 	case "SliceMap":
 		obj := FooStructForSliceMapType{}
 		err := b.Bind(req, &obj)
@@ -1317,3 +1373,88 @@ func TestCanSet(t *testing.T) {
 	var c CanSetStruct
 	assert.Nil(t, mapForm(&c, nil))
 }
+
+func formPostRequest(path, body string) *http.Request {
+	req := requestWithBody("POST", path, body)
+	req.Header.Add("Content-Type", MIMEPOSTForm)
+	return req
+}
+
+func TestBindingSliceDefault(t *testing.T) {
+	var s struct {
+		Friends []string `form:"friends,default=mike"`
+	}
+	req := formPostRequest("", "")
+	err := Form.Bind(req, &s)
+	assert.NoError(t, err)
+
+	assert.Len(t, s.Friends, 1)
+	assert.Equal(t, "mike", s.Friends[0])
+}
+
+func TestBindingStructField(t *testing.T) {
+	var s struct {
+		Opts struct {
+			Port int
+		} `form:"opts"`
+	}
+	req := formPostRequest("", `opts={"Port": 8000}`)
+	err := Form.Bind(req, &s)
+	assert.NoError(t, err)
+	assert.Equal(t, 8000, s.Opts.Port)
+}
+
+func TestBindingUnknownTypeChan(t *testing.T) {
+	var s struct {
+		Stop chan bool `form:"stop"`
+	}
+	req := formPostRequest("", "stop=true")
+	err := Form.Bind(req, &s)
+	assert.Error(t, err)
+	assert.Equal(t, errUnknownType, err)
+}
+
+func TestBindingTimeDuration(t *testing.T) {
+	var s struct {
+		Timeout time.Duration `form:"timeout"`
+	}
+
+	// ok
+	req := formPostRequest("", "timeout=5s")
+	err := Form.Bind(req, &s)
+	assert.NoError(t, err)
+	assert.Equal(t, 5*time.Second, s.Timeout)
+
+	// error
+	req = formPostRequest("", "timeout=wrong")
+	err = Form.Bind(req, &s)
+	assert.Error(t, err)
+}
+
+func TestBindingArray(t *testing.T) {
+	var s struct {
+		Nums [2]int `form:"nums,default=4"`
+	}
+
+	// default
+	req := formPostRequest("", "")
+	err := Form.Bind(req, &s)
+	assert.Error(t, err)
+	assert.Equal(t, [2]int{0, 0}, s.Nums)
+
+	// ok
+	req = formPostRequest("", "nums=3&nums=8")
+	err = Form.Bind(req, &s)
+	assert.NoError(t, err)
+	assert.Equal(t, [2]int{3, 8}, s.Nums)
+
+	// not enough vals
+	req = formPostRequest("", "nums=3")
+	err = Form.Bind(req, &s)
+	assert.Error(t, err)
+
+	// error
+	req = formPostRequest("", "nums=3&nums=wrong")
+	err = Form.Bind(req, &s)
+	assert.Error(t, err)
+}

binding/form_mapping.go

@@ -6,12 +6,17 @@ package binding
 
 import (
 	"errors"
+	"fmt"
 	"reflect"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/gin-gonic/gin/internal/json"
 )
 
+var errUnknownType = errors.New("Unknown type")
+
 func mapUri(ptr interface{}, m map[string][]string) error {
 	return mapFormByTag(ptr, m, "uri")
 }
@@ -20,124 +25,165 @@ func mapForm(ptr interface{}, form map[string][]string) error {
 	return mapFormByTag(ptr, form, "form")
 }
 
+var emptyField = reflect.StructField{}
+
 func mapFormByTag(ptr interface{}, form map[string][]string, tag string) error {
-	typ := reflect.TypeOf(ptr).Elem()
-	val := reflect.ValueOf(ptr).Elem()
-	for i := 0; i < typ.NumField(); i++ {
-		typeField := typ.Field(i)
-		structField := val.Field(i)
-		if !structField.CanSet() {
-			continue
-		}
-
-		structFieldKind := structField.Kind()
-		inputFieldName := typeField.Tag.Get(tag)
-		inputFieldNameList := strings.Split(inputFieldName, ",")
-		inputFieldName = inputFieldNameList[0]
-		var defaultValue string
-		if len(inputFieldNameList) > 1 {
-			defaultList := strings.SplitN(inputFieldNameList[1], "=", 2)
-			if defaultList[0] == "default" {
-				defaultValue = defaultList[1]
-			}
-		}
-		if inputFieldName == "-" {
-			continue
-		}
-		if inputFieldName == "" {
-			inputFieldName = typeField.Name
-
-			// if "form" tag is nil, we inspect if the field is a struct or struct pointer.
-			// this would not make sense for JSON parsing but it does for a form
-			// since data is flatten
-			if structFieldKind == reflect.Ptr {
-				if !structField.Elem().IsValid() {
-					structField.Set(reflect.New(structField.Type().Elem()))
-				}
-				structField = structField.Elem()
-				structFieldKind = structField.Kind()
-			}
-			if structFieldKind == reflect.Struct {
-				err := mapFormByTag(structField.Addr().Interface(), form, tag)
-				if err != nil {
+	_, err := mapping(reflect.ValueOf(ptr), emptyField, form, tag)
 	return err
-				}
-				continue
-			}
-		}
-		inputValue, exists := form[inputFieldName]
-
-		if !exists {
-			if defaultValue == "" {
-				continue
-			}
-			inputValue = make([]string, 1)
-			inputValue[0] = defaultValue
-		}
-
-		numElems := len(inputValue)
-		if structFieldKind == reflect.Slice && numElems > 0 {
-			sliceOf := structField.Type().Elem().Kind()
-			slice := reflect.MakeSlice(structField.Type(), numElems, numElems)
-			for i := 0; i < numElems; i++ {
-				if err := setWithProperType(sliceOf, inputValue[i], slice.Index(i)); err != nil {
-					return err
-				}
-			}
-			val.Field(i).Set(slice)
-			continue
-		}
-		if _, isTime := structField.Interface().(time.Time); isTime {
-			if err := setTimeField(inputValue[0], typeField, structField); err != nil {
-				return err
-			}
-			continue
-		}
-		if err := setWithProperType(typeField.Type.Kind(), inputValue[0], structField); err != nil {
-			return err
-		}
-	}
-	return nil
 }
 
-func setWithProperType(valueKind reflect.Kind, val string, structField reflect.Value) error {
-	switch valueKind {
-	case reflect.Int:
-		return setIntField(val, 0, structField)
-	case reflect.Int8:
-		return setIntField(val, 8, structField)
-	case reflect.Int16:
-		return setIntField(val, 16, structField)
-	case reflect.Int32:
-		return setIntField(val, 32, structField)
-	case reflect.Int64:
-		return setIntField(val, 64, structField)
-	case reflect.Uint:
-		return setUintField(val, 0, structField)
-	case reflect.Uint8:
-		return setUintField(val, 8, structField)
-	case reflect.Uint16:
-		return setUintField(val, 16, structField)
-	case reflect.Uint32:
-		return setUintField(val, 32, structField)
-	case reflect.Uint64:
-		return setUintField(val, 64, structField)
-	case reflect.Bool:
-		return setBoolField(val, structField)
-	case reflect.Float32:
-		return setFloatField(val, 32, structField)
-	case reflect.Float64:
-		return setFloatField(val, 64, structField)
-	case reflect.String:
-		structField.SetString(val)
-	case reflect.Ptr:
-		if !structField.Elem().IsValid() {
-			structField.Set(reflect.New(structField.Type().Elem()))
+func mapping(value reflect.Value, field reflect.StructField, form map[string][]string, tag string) (bool, error) {
+	var vKind = value.Kind()
+
+	if vKind == reflect.Ptr {
+		var isNew bool
+		vPtr := value
+		if value.IsNil() {
+			isNew = true
+			vPtr = reflect.New(value.Type().Elem())
 		}
-		structFieldElem := structField.Elem()
-		return setWithProperType(structFieldElem.Kind(), val, structFieldElem)
+		isSetted, err := mapping(vPtr.Elem(), field, form, tag)
+		if err != nil {
+			return false, err
+		}
+		if isNew && isSetted {
+			value.Set(vPtr)
+		}
+		return isSetted, nil
+	}
+
+	ok, err := tryToSetValue(value, field, form, tag)
+	if err != nil {
+		return false, err
+	}
+	if ok {
+		return true, nil
+	}
+
+	if vKind == reflect.Struct {
+		tValue := value.Type()
+
+		var isSetted bool
+		for i := 0; i < value.NumField(); i++ {
+			if !value.Field(i).CanSet() {
+				continue
+			}
+			ok, err := mapping(value.Field(i), tValue.Field(i), form, tag)
+			if err != nil {
+				return false, err
+			}
+			isSetted = isSetted || ok
+		}
+		return isSetted, nil
+	}
+	return false, nil
+}
+
+func tryToSetValue(value reflect.Value, field reflect.StructField, form map[string][]string, tag string) (bool, error) {
+	var tagValue, defaultValue string
+	var isDefaultExists bool
+
+	tagValue = field.Tag.Get(tag)
+	tagValue, opts := head(tagValue, ",")
+
+	if tagValue == "-" { // just ignoring this field
+		return false, nil
+	}
+	if tagValue == "" { // default value is FieldName
+		tagValue = field.Name
+	}
+	if tagValue == "" { // when field is "emptyField" variable
+		return false, nil
+	}
+
+	var opt string
+	for len(opts) > 0 {
+		opt, opts = head(opts, ",")
+
+		k, v := head(opt, "=")
+		switch k {
+		case "default":
+			isDefaultExists = true
+			defaultValue = v
+		}
+	}
+
+	vs, ok := form[tagValue]
+	if !ok && !isDefaultExists {
+		return false, nil
+	}
+
+	switch value.Kind() {
+	case reflect.Slice:
+		if !ok {
+			vs = []string{defaultValue}
+		}
+		return true, setSlice(vs, value, field)
+	case reflect.Array:
+		if !ok {
+			vs = []string{defaultValue}
+		}
+		if len(vs) != value.Len() {
+			return false, fmt.Errorf("%q is not valid value for %s", vs, value.Type().String())
+		}
+		return true, setArray(vs, value, field)
 	default:
-		return errors.New("Unknown type")
+		var val string
+		if !ok {
+			val = defaultValue
+		}
+
+		if len(vs) > 0 {
+			val = vs[0]
+		}
+		return true, setWithProperType(val, value, field)
+	}
+}
+
+func setWithProperType(val string, value reflect.Value, field reflect.StructField) error {
+	switch value.Kind() {
+	case reflect.Int:
+		return setIntField(val, 0, value)
+	case reflect.Int8:
+		return setIntField(val, 8, value)
+	case reflect.Int16:
+		return setIntField(val, 16, value)
+	case reflect.Int32:
+		return setIntField(val, 32, value)
+	case reflect.Int64:
+		switch value.Interface().(type) {
+		case time.Duration:
+			return setTimeDuration(val, value, field)
+		}
+		return setIntField(val, 64, value)
+	case reflect.Uint:
+		return setUintField(val, 0, value)
+	case reflect.Uint8:
+		return setUintField(val, 8, value)
+	case reflect.Uint16:
+		return setUintField(val, 16, value)
+	case reflect.Uint32:
+		return setUintField(val, 32, value)
+	case reflect.Uint64:
+		return setUintField(val, 64, value)
+	case reflect.Bool:
+		return setBoolField(val, value)
+	case reflect.Float32:
+		return setFloatField(val, 32, value)
+	case reflect.Float64:
+		return setFloatField(val, 64, value)
+	case reflect.String:
+		value.SetString(val)
+	case reflect.Struct:
+		switch value.Interface().(type) {
+		case time.Time:
+			return setTimeField(val, field, value)
+		}
+		return json.Unmarshal([]byte(val), value.Addr().Interface())
+	case reflect.Map:
+		return json.Unmarshal([]byte(val), value.Addr().Interface())
+	default:
+		return errUnknownType
 	}
 	return nil
 }
@@ -218,3 +264,40 @@ func setTimeField(val string, structField reflect.StructField, value reflect.Val
 	value.Set(reflect.ValueOf(t))
 	return nil
 }
+
+func setArray(vals []string, value reflect.Value, field reflect.StructField) error {
+	for i, s := range vals {
+		err := setWithProperType(s, value.Index(i), field)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func setSlice(vals []string, value reflect.Value, field reflect.StructField) error {
+	slice := reflect.MakeSlice(value.Type(), len(vals), len(vals))
+	err := setArray(vals, slice, field)
+	if err != nil {
+		return err
+	}
+	value.Set(slice)
+	return nil
+}
+
+func setTimeDuration(val string, value reflect.Value, field reflect.StructField) error {
+	d, err := time.ParseDuration(val)
+	if err != nil {
+		return err
+	}
+	value.Set(reflect.ValueOf(d))
+	return nil
+}
+
+func head(str, sep string) (head string, tail string) {
+	idx := strings.Index(str, sep)
+	if idx < 0 {
+		return str, ""
+	}
+	return str[:idx], str[idx+len(sep):]
+}

binding/form_mapping_benchmark_test.go

@@ -0,0 +1,61 @@
+// Copyright 2019 Gin Core Team.  All rights reserved.
+// Use of this source code is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+package binding
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var form = map[string][]string{
+	"name":      {"mike"},
+	"friends":   {"anna", "nicole"},
+	"id_number": {"12345678"},
+	"id_date":   {"2018-01-20"},
+}
+
+type structFull struct {
+	Name    string   `form:"name"`
+	Age     int      `form:"age,default=25"`
+	Friends []string `form:"friends"`
+	ID      *struct {
+		Number      string    `form:"id_number"`
+		DateOfIssue time.Time `form:"id_date" time_format:"2006-01-02" time_utc:"true"`
+	}
+	Nationality *string `form:"nationality"`
+}
+
+func BenchmarkMapFormFull(b *testing.B) {
+	var s structFull
+	for i := 0; i < b.N; i++ {
+		mapForm(&s, form)
+	}
+	b.StopTimer()
+
+	t := b
+	assert.Equal(t, "mike", s.Name)
+	assert.Equal(t, 25, s.Age)
+	assert.Equal(t, []string{"anna", "nicole"}, s.Friends)
+	assert.Equal(t, "12345678", s.ID.Number)
+	assert.Equal(t, time.Date(2018, 1, 20, 0, 0, 0, 0, time.UTC), s.ID.DateOfIssue)
+	assert.Nil(t, s.Nationality)
+}
+
+type structName struct {
+	Name string `form:"name"`
+}
+
+func BenchmarkMapFormName(b *testing.B) {
+	var s structName
+	for i := 0; i < b.N; i++ {
+		mapForm(&s, form)
+	}
+	b.StopTimer()
+
+	t := b
+	assert.Equal(t, "mike", s.Name)
+}

errors.go

@@ -53,7 +53,7 @@ func (msg *Error) SetMeta(data interface{}) *Error {
 	return msg
 }
 
-// JSON creates a properly formated JSON
+// JSON creates a properly formatted JSON
 func (msg *Error) JSON() interface{} {
 	json := H{}
 	if msg.Meta != nil {

gin.go

@@ -225,7 +225,7 @@ func (engine *Engine) NoMethod(handlers ...HandlerFunc) {
 	engine.rebuild405Handlers()
 }
 
-// Use attachs a global middleware to the router. ie. the middleware attached though Use() will be
+// Use attaches a global middleware to the router. ie. the middleware attached though Use() will be
 // included in the handlers chain for every single request. Even 404, 405, static files...
 // For example, this is the right place for a logger or error management middleware.
 func (engine *Engine) Use(middleware ...HandlerFunc) IRoutes {
@@ -366,10 +366,10 @@ func (engine *Engine) HandleContext(c *Context) {
 
 func (engine *Engine) handleHTTPRequest(c *Context) {
 	httpMethod := c.Request.Method
-	path := c.Request.URL.Path
+	rPath := c.Request.URL.Path
 	unescape := false
 	if engine.UseRawPath && len(c.Request.URL.RawPath) > 0 {
-		path = c.Request.URL.RawPath
+		rPath = c.Request.URL.RawPath
 		unescape = engine.UnescapePathValues
 	}
 
@@ -381,7 +381,7 @@ func (engine *Engine) handleHTTPRequest(c *Context) {
 		}
 		root := t[i].root
 		// Find route in tree
-		handlers, params, tsr := root.getValue(path, c.Params, unescape)
+		handlers, params, tsr := root.getValue(rPath, c.Params, unescape)
 		if handlers != nil {
 			c.handlers = handlers
 			c.Params = params
@@ -389,7 +389,7 @@ func (engine *Engine) handleHTTPRequest(c *Context) {
 			c.writermem.WriteHeaderNow()
 			return
 		}
-		if httpMethod != "CONNECT" && path != "/" {
+		if httpMethod != "CONNECT" && rPath != "/" {
 			if tsr && engine.RedirectTrailingSlash {
 				redirectTrailingSlash(c)
 				return
@@ -406,7 +406,7 @@ func (engine *Engine) handleHTTPRequest(c *Context) {
 			if tree.method == httpMethod {
 				continue
 			}
-			if handlers, _, _ := tree.root.getValue(path, nil, unescape); handlers != nil {
+			if handlers, _, _ := tree.root.getValue(rPath, nil, unescape); handlers != nil {
 				c.handlers = engine.allNoMethod
 				serveError(c, http.StatusMethodNotAllowed, default405Body)
 				return
@@ -459,15 +459,15 @@ func redirectTrailingSlash(c *Context) {
 
 func redirectFixedPath(c *Context, root *node, trailingSlash bool) bool {
 	req := c.Request
-	path := req.URL.Path
+	rPath := req.URL.Path
 
-	if fixedPath, ok := root.findCaseInsensitivePath(cleanPath(path), trailingSlash); ok {
+	if fixedPath, ok := root.findCaseInsensitivePath(cleanPath(rPath), trailingSlash); ok {
 		code := http.StatusMovedPermanently // Permanent redirect, request with GET method
 		if req.Method != "GET" {
 			code = http.StatusTemporaryRedirect
 		}
 		req.URL.Path = string(fixedPath)
-		debugPrint("redirecting request %d: %s --> %s", code, path, req.URL.String())
+		debugPrint("redirecting request %d: %s --> %s", code, rPath, req.URL.String())
 		http.Redirect(c.Writer, req, req.URL.String(), code)
 		c.writermem.WriteHeaderNow()
 		return true

go.mod

@@ -1,17 +1,17 @@
 module github.com/gin-gonic/gin
 
+go 1.12
+
 require (
-	github.com/gin-contrib/sse v0.0.0-20190125020943-a7658810eb74
-	github.com/golang/protobuf v1.2.0
+	github.com/gin-contrib/sse v0.0.0-20190301062529-5545eab6dad3
+	github.com/golang/protobuf v1.3.0
 	github.com/json-iterator/go v1.1.5
-	github.com/mattn/go-isatty v0.0.4
+	github.com/mattn/go-isatty v0.0.6
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.1 // indirect
 	github.com/stretchr/testify v1.3.0
 	github.com/ugorji/go/codec v0.0.0-20190204201341-e444a5086c43
-	golang.org/x/net v0.0.0-20190213061140-3a22650c66bd
-	golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 // indirect
-	golang.org/x/sys v0.0.0-20190221075227-b4e8571b14e0 // indirect
+	golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95
 	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
 	gopkg.in/go-playground/validator.v8 v8.18.2
 	gopkg.in/yaml.v2 v2.2.2

go.sum

@@ -1,14 +1,18 @@
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/gin-contrib/sse v0.0.0-20190125020943-a7658810eb74 h1:FaI7wNyesdMBSkIRVUuEEYEvmzufs7EqQvRAxfEXGbQ=
-github.com/gin-contrib/sse v0.0.0-20190125020943-a7658810eb74/go.mod h1:VJ0WA2NBN22VlZ2dKZQPAPnyWw5XTlK1KymzLKsr59s=
-github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/gin-contrib/sse v0.0.0-20190301062529-5545eab6dad3 h1:t8FVkw33L+wilf2QiWkw0UV77qRpcH/JHPKGpKa2E8g=
+github.com/gin-contrib/sse v0.0.0-20190301062529-5545eab6dad3/go.mod h1:VJ0WA2NBN22VlZ2dKZQPAPnyWw5XTlK1KymzLKsr59s=
+github.com/golang/protobuf v1.3.0 h1:kbxbvI4Un1LUWKxufD+BiE6AEExYYgkQLQmLFqA1LFk=
+github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
+github.com/json-iterator/go v1.1.5 h1:gL2yXlmiIo4+t+y32d4WGwOjKGYcGOuyrg46vadswDE=
 github.com/json-iterator/go v1.1.5/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
-github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
-github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
+github.com/mattn/go-isatty v0.0.6 h1:SrwhHcpV4nWrMGdNcC2kXpMfcBVYGDuTArqyhocJgvA=
+github.com/mattn/go-isatty v0.0.6/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
@@ -17,14 +21,17 @@ github.com/ugorji/go v1.1.2 h1:JON3E2/GPW2iDNGoSAusl1KDf5TRQ8k8q7Tp097pZGs=
 github.com/ugorji/go v1.1.2/go.mod h1:hnLbHMwcvSihnDhEfx2/BzKp2xb0Y+ErdfYcrs9tkJQ=
 github.com/ugorji/go/codec v0.0.0-20190204201341-e444a5086c43 h1:BasDe+IErOQKrMVXab7UayvSlIpiyGwRvuX3EKYY7UA=
 github.com/ugorji/go/codec v0.0.0-20190204201341-e444a5086c43/go.mod h1:iT03XoTwV7xq/+UGwKO3UbC1nNNlopQiY61beSdrtOA=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd h1:HuTn7WObtcDo9uEEU7rEqL0jYthdXAmZ6PP+meazmaU=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
-golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20190221075227-b4e8571b14e0 h1:bzeyCHgoAyjZjAhvTpks+qM7sdlh4cCSitmXeCEO3B4=
-golang.org/x/sys v0.0.0-20190221075227-b4e8571b14e0/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95 h1:fY7Dsw114eJN4boqzVSbpVHO6rTdhq6/GnXeu+PKnzU=
+golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223 h1:DH4skfRX4EBpamg7iV4ZlCpblAHI6s6TDM39bFZumv8=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/go-playground/assert.v1 v1.2.1 h1:xoYuJVE7KT85PYWrN730RguIQO0ePzVRfFMXadIrXTM=
 gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE=
 gopkg.in/go-playground/validator.v8 v8.18.2 h1:lFB4DoMU6B626w8ny76MV7VX6W2VHct2GVOI3xgiMrQ=
 gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y=

internal/json/json.go

@@ -11,6 +11,8 @@ import "encoding/json"
 var (
 	// Marshal is exported by gin/json package.
 	Marshal = json.Marshal
+	// Unmarshal is exported by gin/json package.
+	Unmarshal = json.Unmarshal
 	// MarshalIndent is exported by gin/json package.
 	MarshalIndent = json.MarshalIndent
 	// NewDecoder is exported by gin/json package.

internal/json/jsoniter.go

@@ -12,6 +12,8 @@ var (
 	json = jsoniter.ConfigCompatibleWithStandardLibrary
 	// Marshal is exported by gin/json package.
 	Marshal = json.Marshal
+	// Unmarshal is exported by gin/json package.
+	Unmarshal = json.Unmarshal
 	// MarshalIndent is exported by gin/json package.
 	MarshalIndent = json.MarshalIndent
 	// NewDecoder is exported by gin/json package.

logger.go

@@ -66,6 +66,8 @@ type LogFormatterParams struct {
 	IsTerm bool
 	// BodySize is the size of the Response Body
 	BodySize int
+	// Keys are the keys set on the request's context.
+	Keys map[string]interface{}
 }
 
 // StatusCodeColor is the ANSI color for appropriately logging http status code to a terminal.
@@ -227,6 +229,7 @@ func LoggerWithConfig(conf LoggerConfig) HandlerFunc {
 			param := LogFormatterParams{
 				Request: c.Request,
 				IsTerm:  isTerm,
+				Keys:    c.Keys,
 			}
 
 			// Stop timer

logger_test.go

@@ -181,6 +181,7 @@ func TestLoggerWithFormatter(t *testing.T) {
 
 func TestLoggerWithConfigFormatting(t *testing.T) {
 	var gotParam LogFormatterParams
+	var gotKeys map[string]interface{}
 	buffer := new(bytes.Buffer)
 
 	router := New()
@@ -204,6 +205,7 @@ func TestLoggerWithConfigFormatting(t *testing.T) {
 	router.GET("/example", func(c *Context) {
 		// set dummy ClientIP
 		c.Request.Header.Set("X-Forwarded-For", "20.20.20.20")
+		gotKeys = c.Keys
 	})
 	performRequest(router, "GET", "/example?a=100")
 
@@ -223,6 +225,7 @@ func TestLoggerWithConfigFormatting(t *testing.T) {
 	assert.Equal(t, "GET", gotParam.Method)
 	assert.Equal(t, "/example?a=100", gotParam.Path)
 	assert.Empty(t, gotParam.ErrorMessage)
+	assert.Equal(t, gotKeys, gotParam.Keys)
 
 }
 

recovery.go

@@ -52,12 +52,12 @@ func RecoveryWithWriter(out io.Writer) HandlerFunc {
 				}
 				if logger != nil {
 					stack := stack(3)
-					httprequest, _ := httputil.DumpRequest(c.Request, false)
+					httpRequest, _ := httputil.DumpRequest(c.Request, false)
 					if brokenPipe {
-						logger.Printf("%s\n%s%s", err, string(httprequest), reset)
+						logger.Printf("%s\n%s%s", err, string(httpRequest), reset)
 					} else if IsDebugging() {
 						logger.Printf("[Recovery] %s panic recovered:\n%s\n%s\n%s%s",
-							timeFormat(time.Now()), string(httprequest), err, stack, reset)
+							timeFormat(time.Now()), string(httpRequest), err, stack, reset)
 					} else {
 						logger.Printf("[Recovery] %s panic recovered:\n%s\n%s%s",
 							timeFormat(time.Now()), err, stack, reset)
@@ -128,8 +128,8 @@ func function(pc uintptr) []byte {
 	//	*T.ptrmethod
 	// Also the package path might contains dot (e.g. code.google.com/...),
 	// so first eliminate the path prefix
-	if lastslash := bytes.LastIndex(name, slash); lastslash >= 0 {
-		name = name[lastslash+1:]
+	if lastSlash := bytes.LastIndex(name, slash); lastSlash >= 0 {
+		name = name[lastSlash+1:]
 	}
 	if period := bytes.Index(name, dot); period >= 0 {
 		name = name[period+1:]

routergroup.go

@@ -195,7 +195,7 @@ func (group *RouterGroup) createStaticHandler(relativePath string, fs http.FileS
 		// Check if file exists and/or if we have permission to access it
 		if _, err := fs.Open(file); err != nil {
 			c.Writer.WriteHeader(http.StatusNotFound)
-			c.handlers = group.engine.allNoRoute
+			c.handlers = group.engine.noRoute
 			// Reset index
 			c.index = -1
 			return

routes_test.go

@@ -429,7 +429,6 @@ func TestRouterNotFound(t *testing.T) {
 
 func TestRouterStaticFSNotFound(t *testing.T) {
 	router := New()
-
 	router.StaticFS("/", http.FileSystem(http.Dir("/thisreallydoesntexist/")))
 	router.NoRoute(func(c *Context) {
 		c.String(404, "non existent")
@@ -452,6 +451,27 @@ func TestRouterStaticFSFileNotFound(t *testing.T) {
 	})
 }
 
+// Reproduction test for the bug of issue #1805
+func TestMiddlewareCalledOnceByRouterStaticFSNotFound(t *testing.T) {
+	router := New()
+
+	// Middleware must be called just only once by per request.
+	middlewareCalledNum := 0
+	router.Use(func(c *Context) {
+		middlewareCalledNum += 1
+	})
+
+	router.StaticFS("/", http.FileSystem(http.Dir("/thisreallydoesntexist/")))
+
+	// First access
+	performRequest(router, "GET", "/nonexistent")
+	assert.Equal(t, 1, middlewareCalledNum)
+
+	// Second access
+	performRequest(router, "HEAD", "/nonexistent")
+	assert.Equal(t, 2, middlewareCalledNum)
+}
+
 func TestRouteRawPath(t *testing.T) {
 	route := New()
 	route.UseRawPath = true