Upgrade to Go1.6, use vendor

Also make sure we're using a more recent version of godep

vendor/github.com/gin-gonic/gin/binding/binding.go

@@ -0,0 +1,216 @@
+// Copyright 2014 Manu Martinez-Almeida.  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 (
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"net/http"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+type (
+	Binding interface {
+		Bind(*http.Request, interface{}) error
+	}
+
+	// JSON binding
+	jsonBinding struct{}
+
+	// XML binding
+	xmlBinding struct{}
+
+	// // form binding
+	formBinding struct{}
+)
+
+var (
+	JSON = jsonBinding{}
+	XML  = xmlBinding{}
+	Form = formBinding{} // todo
+)
+
+func (_ jsonBinding) Bind(req *http.Request, obj interface{}) error {
+	decoder := json.NewDecoder(req.Body)
+	if err := decoder.Decode(obj); err == nil {
+		return Validate(obj)
+	} else {
+		return err
+	}
+}
+
+func (_ xmlBinding) Bind(req *http.Request, obj interface{}) error {
+	decoder := xml.NewDecoder(req.Body)
+	if err := decoder.Decode(obj); err == nil {
+		return Validate(obj)
+	} else {
+		return err
+	}
+}
+
+func (_ formBinding) Bind(req *http.Request, obj interface{}) error {
+	if err := req.ParseForm(); err != nil {
+		return err
+	}
+	if err := mapForm(obj, req.Form); err != nil {
+		return err
+	}
+	return Validate(obj)
+}
+
+func mapForm(ptr interface{}, form map[string][]string) error {
+	typ := reflect.TypeOf(ptr).Elem()
+	formStruct := reflect.ValueOf(ptr).Elem()
+	for i := 0; i < typ.NumField(); i++ {
+		typeField := typ.Field(i)
+		if inputFieldName := typeField.Tag.Get("form"); inputFieldName != "" {
+			structField := formStruct.Field(i)
+			if !structField.CanSet() {
+				continue
+			}
+
+			inputValue, exists := form[inputFieldName]
+			if !exists {
+				continue
+			}
+			numElems := len(inputValue)
+			if structField.Kind() == 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
+					}
+				}
+				formStruct.Field(i).Set(slice)
+			} else {
+				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, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		if val == "" {
+			val = "0"
+		}
+		intVal, err := strconv.Atoi(val)
+		if err != nil {
+			return err
+		} else {
+			structField.SetInt(int64(intVal))
+		}
+	case reflect.Bool:
+		if val == "" {
+			val = "false"
+		}
+		boolVal, err := strconv.ParseBool(val)
+		if err != nil {
+			return err
+		} else {
+			structField.SetBool(boolVal)
+		}
+	case reflect.Float32:
+		if val == "" {
+			val = "0.0"
+		}
+		floatVal, err := strconv.ParseFloat(val, 32)
+		if err != nil {
+			return err
+		} else {
+			structField.SetFloat(floatVal)
+		}
+	case reflect.Float64:
+		if val == "" {
+			val = "0.0"
+		}
+		floatVal, err := strconv.ParseFloat(val, 64)
+		if err != nil {
+			return err
+		} else {
+			structField.SetFloat(floatVal)
+		}
+	case reflect.String:
+		structField.SetString(val)
+	}
+	return nil
+}
+
+// Don't pass in pointers to bind to. Can lead to bugs. See:
+// https://github.com/codegangsta/martini-contrib/issues/40
+// https://github.com/codegangsta/martini-contrib/pull/34#issuecomment-29683659
+func ensureNotPointer(obj interface{}) {
+	if reflect.TypeOf(obj).Kind() == reflect.Ptr {
+		panic("Pointers are not accepted as binding models")
+	}
+}
+
+func Validate(obj interface{}, parents ...string) error {
+	typ := reflect.TypeOf(obj)
+	val := reflect.ValueOf(obj)
+
+	if typ.Kind() == reflect.Ptr {
+		typ = typ.Elem()
+		val = val.Elem()
+	}
+
+	switch typ.Kind() {
+	case reflect.Struct:
+		for i := 0; i < typ.NumField(); i++ {
+			field := typ.Field(i)
+
+			// Allow ignored and unexported fields in the struct
+			if len(field.PkgPath) > 0 || field.Tag.Get("form") == "-" {
+				continue
+			}
+
+			fieldValue := val.Field(i).Interface()
+			zero := reflect.Zero(field.Type).Interface()
+
+			if strings.Index(field.Tag.Get("binding"), "required") > -1 {
+				fieldType := field.Type.Kind()
+				if fieldType == reflect.Struct {
+					if reflect.DeepEqual(zero, fieldValue) {
+						return errors.New("Required " + field.Name)
+					}
+					err := Validate(fieldValue, field.Name)
+					if err != nil {
+						return err
+					}
+				} else if reflect.DeepEqual(zero, fieldValue) {
+					if len(parents) > 0 {
+						return errors.New("Required " + field.Name + " on " + parents[0])
+					} else {
+						return errors.New("Required " + field.Name)
+					}
+				} else if fieldType == reflect.Slice && field.Type.Elem().Kind() == reflect.Struct {
+					err := Validate(fieldValue)
+					if err != nil {
+						return err
+					}
+				}
+			}
+		}
+	case reflect.Slice:
+		for i := 0; i < val.Len(); i++ {
+			fieldValue := val.Index(i).Interface()
+			err := Validate(fieldValue)
+			if err != nil {
+				return err
+			}
+		}
+	default:
+		return nil
+	}
+	return nil
+}