From fa241efa6d5e934f599e43714e970fa48c9a0f47 Mon Sep 17 00:00:00 2001
From: Unknwon <joe2010xtmf@163.com>
Date: Wed, 15 Oct 2014 11:19:20 -0400
Subject: [PATCH] Use binding middleware

---
 .gopmfile                             |   1 +
 cmd/web.go                            |   2 +-
 modules/auth/admin.go                 |   7 +-
 modules/auth/apiv1/miscellaneous.go   |  42 +--
 modules/auth/auth.go                  |  42 +--
 modules/auth/auth_form.go             |   8 +-
 modules/auth/org.go                   |  16 +-
 modules/auth/publickey_form.go        |   8 +-
 modules/auth/repo_form.go             |  44 ++-
 modules/auth/user_form.go             |  24 +-
 modules/middleware/binding/binding.go | 472 --------------------------
 11 files changed, 89 insertions(+), 577 deletions(-)
 delete mode 100644 modules/middleware/binding/binding.go

diff --git a/.gopmfile b/.gopmfile
index aca9e0fee..e1ffb0154 100644
--- a/.gopmfile
+++ b/.gopmfile
@@ -16,6 +16,7 @@ github.com/go-xorm/xorm = commit:2d8b3135b1
 github.com/gogits/gfm = commit:40f747a9c0
 github.com/gogits/oauth2 = commit:99cbec870a
 github.com/lib/pq = commit:b021d0ef20
+github.com/macaron-contrib/binding = 
 github.com/macaron-contrib/cache = 
 github.com/macaron-contrib/captcha = commit:d37d37eeea
 github.com/macaron-contrib/csrf = 
diff --git a/cmd/web.go b/cmd/web.go
index f5843f5f3..98a180a93 100644
--- a/cmd/web.go
+++ b/cmd/web.go
@@ -15,6 +15,7 @@ import (
 
 	"github.com/Unknwon/macaron"
 	"github.com/codegangsta/cli"
+	"github.com/macaron-contrib/binding"
 	"github.com/macaron-contrib/cache"
 	"github.com/macaron-contrib/captcha"
 	"github.com/macaron-contrib/csrf"
@@ -30,7 +31,6 @@ import (
 	"github.com/gogits/gogs/modules/git"
 	"github.com/gogits/gogs/modules/log"
 	"github.com/gogits/gogs/modules/middleware"
-	"github.com/gogits/gogs/modules/middleware/binding"
 	"github.com/gogits/gogs/modules/setting"
 	"github.com/gogits/gogs/routers"
 	"github.com/gogits/gogs/routers/admin"
diff --git a/modules/auth/admin.go b/modules/auth/admin.go
index 1f1260d65..60ea3a3cc 100644
--- a/modules/auth/admin.go
+++ b/modules/auth/admin.go
@@ -6,9 +6,8 @@ package auth
 
 import (
 	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
 
-	"github.com/gogits/gogs/modules/middleware/binding"
+	"github.com/macaron-contrib/binding"
 )
 
 type AdminEditUserForm struct {
@@ -22,6 +21,6 @@ type AdminEditUserForm struct {
 	LoginType int    `form:"login_type"`
 }
 
-func (f *AdminEditUserForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *AdminEditUserForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
diff --git a/modules/auth/apiv1/miscellaneous.go b/modules/auth/apiv1/miscellaneous.go
index ea3892977..71f9541a9 100644
--- a/modules/auth/apiv1/miscellaneous.go
+++ b/modules/auth/apiv1/miscellaneous.go
@@ -8,11 +8,9 @@ import (
 	"reflect"
 
 	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
+	"github.com/macaron-contrib/binding"
 
 	"github.com/gogits/gogs/modules/auth"
-	"github.com/gogits/gogs/modules/log"
-	"github.com/gogits/gogs/modules/middleware/binding"
 )
 
 type MarkdownForm struct {
@@ -21,18 +19,13 @@ type MarkdownForm struct {
 	Context string `form:"context"`
 }
 
-func (f *MarkdownForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validateApiReq(errs, ctx.Data, f, l)
+func (f *MarkdownForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validateApiReq(errs, ctx.Data, f)
 }
 
-func validateApiReq(errs *binding.Errors, data map[string]interface{}, f interface{}, l i18n.Locale) {
-	if errs.Count() == 0 {
-		return
-	} else if len(errs.Overall) > 0 {
-		for _, err := range errs.Overall {
-			log.Error(4, "%s: %v", reflect.TypeOf(f), err)
-		}
-		return
+func validateApiReq(errs binding.Errors, data map[string]interface{}, f auth.Form) binding.Errors {
+	if errs.Len() == 0 {
+		return errs
 	}
 
 	data["HasError"] = true
@@ -54,26 +47,27 @@ func validateApiReq(errs *binding.Errors, data map[string]interface{}, f interfa
 			continue
 		}
 
-		if err, ok := errs.Fields[field.Name]; ok {
-			switch err {
-			case binding.BindingRequireError:
+		if errs[0].FieldNames[0] == field.Name {
+			switch errs[0].Classification {
+			case binding.RequiredError:
 				data["ErrorMsg"] = fieldName + " cannot be empty"
-			case binding.BindingAlphaDashError:
+			case binding.AlphaDashError:
 				data["ErrorMsg"] = fieldName + " must be valid alpha or numeric or dash(-_) characters"
-			case binding.BindingAlphaDashDotError:
+			case binding.AlphaDashDotError:
 				data["ErrorMsg"] = fieldName + " must be valid alpha or numeric or dash(-_) or dot characters"
-			case binding.BindingMinSizeError:
+			case binding.MinSizeError:
 				data["ErrorMsg"] = fieldName + " must contain at least " + auth.GetMinSize(field) + " characters"
-			case binding.BindingMaxSizeError:
+			case binding.MaxSizeError:
 				data["ErrorMsg"] = fieldName + " must contain at most " + auth.GetMaxSize(field) + " characters"
-			case binding.BindingEmailError:
+			case binding.EmailError:
 				data["ErrorMsg"] = fieldName + " is not a valid e-mail address"
-			case binding.BindingUrlError:
+			case binding.UrlError:
 				data["ErrorMsg"] = fieldName + " is not a valid URL"
 			default:
-				data["ErrorMsg"] = "Unknown error: " + err
+				data["ErrorMsg"] = "Unknown error: " + errs[0].Classification
 			}
-			return
+			return errs
 		}
 	}
+	return errs
 }
diff --git a/modules/auth/auth.go b/modules/auth/auth.go
index bcd2fcb35..95e647f53 100644
--- a/modules/auth/auth.go
+++ b/modules/auth/auth.go
@@ -9,12 +9,12 @@ import (
 	"reflect"
 	"strings"
 
-	"github.com/macaron-contrib/i18n"
+	"github.com/Unknwon/macaron"
+	"github.com/macaron-contrib/binding"
 	"github.com/macaron-contrib/session"
 
 	"github.com/gogits/gogs/models"
 	"github.com/gogits/gogs/modules/log"
-	"github.com/gogits/gogs/modules/middleware/binding"
 	"github.com/gogits/gogs/modules/setting"
 )
 
@@ -69,6 +69,10 @@ func SignedInUser(header http.Header, sess session.Store) *models.User {
 	return u
 }
 
+type Form interface {
+	binding.Validator
+}
+
 // AssignForm assign form values back to the template data.
 func AssignForm(form interface{}, data map[string]interface{}) {
 	typ := reflect.TypeOf(form)
@@ -109,14 +113,9 @@ func GetMaxSize(field reflect.StructField) string {
 	return getSize(field, "MaxSize(")
 }
 
-func validate(errs *binding.Errors, data map[string]interface{}, f interface{}, l i18n.Locale) {
-	if errs.Count() == 0 {
-		return
-	} else if len(errs.Overall) > 0 {
-		for _, err := range errs.Overall {
-			log.Error(4, "%s: %v", reflect.TypeOf(f), err)
-		}
-		return
+func validate(errs binding.Errors, data map[string]interface{}, f Form, l macaron.Locale) binding.Errors {
+	if errs.Len() == 0 {
+		return errs
 	}
 
 	data["HasError"] = true
@@ -139,28 +138,29 @@ func validate(errs *binding.Errors, data map[string]interface{}, f interface{},
 			continue
 		}
 
-		if err, ok := errs.Fields[field.Name]; ok {
+		if errs[0].FieldNames[0] == field.Name {
 			data["Err_"+field.Name] = true
 			trName := l.Tr("form." + field.Name)
-			switch err {
-			case binding.BindingRequireError:
+			switch errs[0].Classification {
+			case binding.RequiredError:
 				data["ErrorMsg"] = trName + l.Tr("form.require_error")
-			case binding.BindingAlphaDashError:
+			case binding.AlphaDashError:
 				data["ErrorMsg"] = trName + l.Tr("form.alpha_dash_error")
-			case binding.BindingAlphaDashDotError:
+			case binding.AlphaDashDotError:
 				data["ErrorMsg"] = trName + l.Tr("form.alpha_dash_dot_error")
-			case binding.BindingMinSizeError:
+			case binding.MinSizeError:
 				data["ErrorMsg"] = trName + l.Tr("form.min_size_error", GetMinSize(field))
-			case binding.BindingMaxSizeError:
+			case binding.MaxSizeError:
 				data["ErrorMsg"] = trName + l.Tr("form.max_size_error", GetMaxSize(field))
-			case binding.BindingEmailError:
+			case binding.EmailError:
 				data["ErrorMsg"] = trName + l.Tr("form.email_error")
-			case binding.BindingUrlError:
+			case binding.UrlError:
 				data["ErrorMsg"] = trName + l.Tr("form.url_error")
 			default:
-				data["ErrorMsg"] = l.Tr("form.unknown_error") + " " + err
+				data["ErrorMsg"] = l.Tr("form.unknown_error") + " " + errs[0].Classification
 			}
-			return
+			return errs
 		}
 	}
+	return errs
 }
diff --git a/modules/auth/auth_form.go b/modules/auth/auth_form.go
index cb9da5dff..e9789634c 100644
--- a/modules/auth/auth_form.go
+++ b/modules/auth/auth_form.go
@@ -6,9 +6,7 @@ package auth
 
 import (
 	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
-
-	"github.com/gogits/gogs/modules/middleware/binding"
+	"github.com/macaron-contrib/binding"
 )
 
 type AuthenticationForm struct {
@@ -31,6 +29,6 @@ type AuthenticationForm struct {
 	AllowAutoRegister bool   `form:"allowautoregister"`
 }
 
-func (f *AuthenticationForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *AuthenticationForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
diff --git a/modules/auth/org.go b/modules/auth/org.go
index 6183e8c82..3e6c55c18 100644
--- a/modules/auth/org.go
+++ b/modules/auth/org.go
@@ -6,9 +6,7 @@ package auth
 
 import (
 	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
-
-	"github.com/gogits/gogs/modules/middleware/binding"
+	"github.com/macaron-contrib/binding"
 )
 
 // ________                            .__                __  .__
@@ -23,8 +21,8 @@ type CreateOrgForm struct {
 	Email   string `form:"email" binding:"Required;Email;MaxSize(50)"`
 }
 
-func (f *CreateOrgForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *CreateOrgForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 type UpdateOrgSettingForm struct {
@@ -37,8 +35,8 @@ type UpdateOrgSettingForm struct {
 	Avatar      string `form:"avatar" binding:"Required;Email;MaxSize(50)"`
 }
 
-func (f *UpdateOrgSettingForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *UpdateOrgSettingForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 // ___________
@@ -54,6 +52,6 @@ type CreateTeamForm struct {
 	Permission  string `form:"permission"`
 }
 
-func (f *CreateTeamForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *CreateTeamForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
diff --git a/modules/auth/publickey_form.go b/modules/auth/publickey_form.go
index 4618a7ea3..5a1d44c04 100644
--- a/modules/auth/publickey_form.go
+++ b/modules/auth/publickey_form.go
@@ -6,9 +6,7 @@ package auth
 
 import (
 	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
-
-	"github.com/gogits/gogs/modules/middleware/binding"
+	"github.com/macaron-contrib/binding"
 )
 
 type AddSSHKeyForm struct {
@@ -16,6 +14,6 @@ type AddSSHKeyForm struct {
 	Content  string `form:"content" binding:"Required"`
 }
 
-func (f *AddSSHKeyForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *AddSSHKeyForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
diff --git a/modules/auth/repo_form.go b/modules/auth/repo_form.go
index df5b8b69f..86fbdc492 100644
--- a/modules/auth/repo_form.go
+++ b/modules/auth/repo_form.go
@@ -6,9 +6,7 @@ package auth
 
 import (
 	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
-
-	"github.com/gogits/gogs/modules/middleware/binding"
+	"github.com/macaron-contrib/binding"
 )
 
 // _______________________________________    _________.______________________ _______________.___.
@@ -28,8 +26,8 @@ type CreateRepoForm struct {
 	InitReadme  bool   `form:"init_readme"`
 }
 
-func (f *CreateRepoForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *CreateRepoForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 type MigrateRepoForm struct {
@@ -43,8 +41,8 @@ type MigrateRepoForm struct {
 	Description  string `form:"desc" binding:"MaxSize(255)"`
 }
 
-func (f *MigrateRepoForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *MigrateRepoForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 type RepoSettingForm struct {
@@ -57,8 +55,8 @@ type RepoSettingForm struct {
 	GoGet       bool   `form:"goget"`
 }
 
-func (f *RepoSettingForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *RepoSettingForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 //  __      __      ___.   .__    .__            __
@@ -77,8 +75,8 @@ type NewWebhookForm struct {
 	Active       bool   `form:"active"`
 }
 
-func (f *NewWebhookForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *NewWebhookForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 type NewSlackHookForm struct {
@@ -90,8 +88,8 @@ type NewSlackHookForm struct {
 	Active       bool   `form:"active"`
 }
 
-func (f *NewSlackHookForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *NewSlackHookForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 // .___
@@ -109,8 +107,8 @@ type CreateIssueForm struct {
 	Content     string `form:"content"`
 }
 
-func (f *CreateIssueForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *CreateIssueForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 //    _____  .__.__                   __
@@ -126,8 +124,8 @@ type CreateMilestoneForm struct {
 	Deadline string `form:"due_date"`
 }
 
-func (f *CreateMilestoneForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *CreateMilestoneForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 // .____          ___.          .__
@@ -142,8 +140,8 @@ type CreateLabelForm struct {
 	Color string `form:"color" binding:"Required;Size(7)"`
 }
 
-func (f *CreateLabelForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *CreateLabelForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 // __________       .__
@@ -162,8 +160,8 @@ type NewReleaseForm struct {
 	Prerelease bool   `form:"prerelease"`
 }
 
-func (f *NewReleaseForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *NewReleaseForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 type EditReleaseForm struct {
@@ -174,6 +172,6 @@ type EditReleaseForm struct {
 	Prerelease bool   `form:"prerelease"`
 }
 
-func (f *EditReleaseForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *EditReleaseForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
diff --git a/modules/auth/user_form.go b/modules/auth/user_form.go
index 93bd01a9f..72bdd4589 100644
--- a/modules/auth/user_form.go
+++ b/modules/auth/user_form.go
@@ -6,9 +6,7 @@ package auth
 
 import (
 	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
-
-	"github.com/gogits/gogs/modules/middleware/binding"
+	"github.com/macaron-contrib/binding"
 )
 
 type InstallForm struct {
@@ -34,8 +32,8 @@ type InstallForm struct {
 	AdminEmail      string `form:"admin_email" binding:"Required;Email;MaxSize(50)"`
 }
 
-func (f *InstallForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *InstallForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 //    _____   ____ _________________ ___
@@ -54,8 +52,8 @@ type RegisterForm struct {
 	LoginName string `form:"loginname"`
 }
 
-func (f *RegisterForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *RegisterForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 type SignInForm struct {
@@ -64,8 +62,8 @@ type SignInForm struct {
 	Remember bool   `form:"remember"`
 }
 
-func (f *SignInForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *SignInForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 //   __________________________________________.___ _______    ________  _________
@@ -84,8 +82,8 @@ type UpdateProfileForm struct {
 	Avatar   string `form:"avatar" binding:"Required;Email;MaxSize(50)"`
 }
 
-func (f *UpdateProfileForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *UpdateProfileForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
 type ChangePasswordForm struct {
@@ -94,6 +92,6 @@ type ChangePasswordForm struct {
 	Retype      string `form:"retype"`
 }
 
-func (f *ChangePasswordForm) Validate(ctx *macaron.Context, errs *binding.Errors, l i18n.Locale) {
-	validate(errs, ctx.Data, f, l)
+func (f *ChangePasswordForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
 }
diff --git a/modules/middleware/binding/binding.go b/modules/middleware/binding/binding.go
deleted file mode 100644
index 4103f5543..000000000
--- a/modules/middleware/binding/binding.go
+++ /dev/null
@@ -1,472 +0,0 @@
-// Copyright 2013 The Martini Contrib Authors. All rights reserved.
-// Copyright 2014 The Gogs Authors. 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"
-	"fmt"
-	"io"
-	"net/http"
-	"reflect"
-	"regexp"
-	"strconv"
-	"strings"
-	"unicode/utf8"
-
-	"github.com/Unknwon/macaron"
-	"github.com/macaron-contrib/i18n"
-)
-
-/*
-	To the land of Middle-ware Earth:
-
-		One func to rule them all,
-		One func to find them,
-		One func to bring them all,
-		And in this package BIND them.
-*/
-
-// Bind accepts a copy of an empty struct and populates it with
-// values from the request (if deserialization is successful). It
-// wraps up the functionality of the Form and Json middleware
-// according to the Content-Type of the request, and it guesses
-// if no Content-Type is specified. Bind invokes the ErrorHandler
-// middleware to bail out if errors occurred. If you want to perform
-// your own error handling, use Form or Json middleware directly.
-// An interface pointer can be added as a second argument in order
-// to map the struct to a specific interface.
-func Bind(obj interface{}, ifacePtr ...interface{}) macaron.Handler {
-	return func(ctx *macaron.Context) {
-		contentType := ctx.Req.Header.Get("Content-Type")
-
-		if strings.Contains(contentType, "form-urlencoded") {
-			ctx.Invoke(Form(obj, ifacePtr...))
-		} else if strings.Contains(contentType, "multipart/form-data") {
-			ctx.Invoke(MultipartForm(obj, ifacePtr...))
-		} else if strings.Contains(contentType, "json") {
-			ctx.Invoke(Json(obj, ifacePtr...))
-		} else {
-			ctx.Invoke(Json(obj, ifacePtr...))
-			if getErrors(ctx).Count() > 0 {
-				ctx.Invoke(Form(obj, ifacePtr...))
-			}
-		}
-
-		ctx.Invoke(ErrorHandler)
-	}
-}
-
-// BindIgnErr will do the exactly same thing as Bind but without any
-// error handling, which user has freedom to deal with them.
-// This allows user take advantages of validation.
-func BindIgnErr(obj interface{}, ifacePtr ...interface{}) macaron.Handler {
-	return func(ctx *macaron.Context, req *http.Request) {
-		contentType := req.Header.Get("Content-Type")
-
-		if strings.Contains(contentType, "form-urlencoded") {
-			ctx.Invoke(Form(obj, ifacePtr...))
-		} else if strings.Contains(contentType, "multipart/form-data") {
-			ctx.Invoke(MultipartForm(obj, ifacePtr...))
-		} else if strings.Contains(contentType, "json") {
-			ctx.Invoke(Json(obj, ifacePtr...))
-		} else {
-			ctx.Invoke(Json(obj, ifacePtr...))
-			if getErrors(ctx).Count() > 0 {
-				ctx.Invoke(Form(obj, ifacePtr...))
-			}
-		}
-	}
-}
-
-// Form is middleware to deserialize form-urlencoded data from the request.
-// It gets data from the form-urlencoded body, if present, or from the
-// query string. It uses the http.Request.ParseForm() method
-// to perform deserialization, then reflection is used to map each field
-// into the struct with the proper type. Structs with primitive slice types
-// (bool, float, int, string) can support deserialization of repeated form
-// keys, for example: key=val1&key=val2&key=val3
-// An interface pointer can be added as a second argument in order
-// to map the struct to a specific interface.
-func Form(formStruct interface{}, ifacePtr ...interface{}) macaron.Handler {
-	return func(ctx *macaron.Context) {
-		ensureNotPointer(formStruct)
-		formStruct := reflect.New(reflect.TypeOf(formStruct))
-		errors := newErrors()
-		parseErr := ctx.Req.ParseForm()
-
-		// Format validation of the request body or the URL would add considerable overhead,
-		// and ParseForm does not complain when URL encoding is off.
-		// Because an empty request body or url can also mean absence of all needed values,
-		// it is not in all cases a bad request, so let's return 422.
-		if parseErr != nil {
-			errors.Overall[BindingDeserializationError] = parseErr.Error()
-		}
-
-		mapForm(formStruct, ctx.Req.Form, errors)
-
-		validateAndMap(formStruct, ctx, errors, ifacePtr...)
-	}
-}
-
-func MultipartForm(formStruct interface{}, ifacePtr ...interface{}) macaron.Handler {
-	return func(ctx *macaron.Context) {
-		ensureNotPointer(formStruct)
-		formStruct := reflect.New(reflect.TypeOf(formStruct))
-		errors := newErrors()
-
-		// Workaround for multipart forms returning nil instead of an error
-		// when content is not multipart
-		// https://code.google.com/p/go/issues/detail?id=6334
-		multipartReader, err := ctx.Req.MultipartReader()
-		if err != nil {
-			errors.Overall[BindingDeserializationError] = err.Error()
-		} else {
-			form, parseErr := multipartReader.ReadForm(MaxMemory)
-
-			if parseErr != nil {
-				errors.Overall[BindingDeserializationError] = parseErr.Error()
-			}
-
-			ctx.Req.MultipartForm = form
-		}
-
-		mapForm(formStruct, ctx.Req.MultipartForm.Value, errors)
-
-		validateAndMap(formStruct, ctx, errors, ifacePtr...)
-	}
-}
-
-// Json is middleware to deserialize a JSON payload from the request
-// into the struct that is passed in. The resulting struct is then
-// validated, but no error handling is actually performed here.
-// An interface pointer can be added as a second argument in order
-// to map the struct to a specific interface.
-func Json(jsonStruct interface{}, ifacePtr ...interface{}) macaron.Handler {
-	return func(ctx *macaron.Context) {
-		ensureNotPointer(jsonStruct)
-		jsonStruct := reflect.New(reflect.TypeOf(jsonStruct))
-		errors := newErrors()
-
-		if ctx.Req.Body != nil {
-			defer ctx.Req.Body.Close()
-		}
-
-		if err := json.NewDecoder(ctx.Req.Body).Decode(jsonStruct.Interface()); err != nil && err != io.EOF {
-			errors.Overall[BindingDeserializationError] = err.Error()
-		}
-
-		validateAndMap(jsonStruct, ctx, errors, ifacePtr...)
-	}
-}
-
-// Validate is middleware to enforce required fields. If the struct
-// passed in is a Validator, then the user-defined Validate method
-// is executed, and its errors are mapped to the context. This middleware
-// performs no error handling: it merely detects them and maps them.
-func Validate(obj interface{}) macaron.Handler {
-	return func(ctx *macaron.Context, l i18n.Locale) {
-		errors := newErrors()
-		validateStruct(errors, obj)
-
-		if validator, ok := obj.(Validator); ok {
-			validator.Validate(ctx, errors, l)
-		}
-		ctx.Map(*errors)
-	}
-}
-
-var (
-	alphaDashPattern    = regexp.MustCompile("[^\\d\\w-_]")
-	alphaDashDotPattern = regexp.MustCompile("[^\\d\\w-_\\.]")
-	emailPattern        = regexp.MustCompile("[\\w!#$%&'*+/=?^_`{|}~-]+(?:\\.[\\w!#$%&'*+/=?^_`{|}~-]+)*@(?:[\\w](?:[\\w-]*[\\w])?\\.)+[a-zA-Z0-9](?:[\\w-]*[\\w])?")
-	urlPattern          = regexp.MustCompile(`(http|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&amp;:/~\+#]*[\w\-\@?^=%&amp;/~\+#])?`)
-)
-
-func validateStruct(errors *Errors, obj interface{}) {
-	typ := reflect.TypeOf(obj)
-	val := reflect.ValueOf(obj)
-
-	if typ.Kind() == reflect.Ptr {
-		typ = typ.Elem()
-		val = val.Elem()
-	}
-
-	for i := 0; i < typ.NumField(); i++ {
-		field := typ.Field(i)
-
-		// Allow ignored fields in the struct
-		if field.Tag.Get("form") == "-" {
-			continue
-		}
-
-		fieldValue := val.Field(i).Interface()
-		if field.Type.Kind() == reflect.Struct {
-			validateStruct(errors, fieldValue)
-			continue
-		}
-
-		zero := reflect.Zero(field.Type).Interface()
-
-		// Match rules.
-		for _, rule := range strings.Split(field.Tag.Get("binding"), ";") {
-			if len(rule) == 0 {
-				continue
-			}
-
-			switch {
-			case rule == "Required":
-				if reflect.DeepEqual(zero, fieldValue) {
-					errors.Fields[field.Name] = BindingRequireError
-					break
-				}
-			case rule == "AlphaDash":
-				if alphaDashPattern.MatchString(fmt.Sprintf("%v", fieldValue)) {
-					errors.Fields[field.Name] = BindingAlphaDashError
-					break
-				}
-			case rule == "AlphaDashDot":
-				if alphaDashDotPattern.MatchString(fmt.Sprintf("%v", fieldValue)) {
-					errors.Fields[field.Name] = BindingAlphaDashDotError
-					break
-				}
-			case strings.HasPrefix(rule, "MinSize("):
-				min, err := strconv.Atoi(rule[8 : len(rule)-1])
-				if err != nil {
-					errors.Overall["MinSize"] = err.Error()
-					break
-				}
-				if str, ok := fieldValue.(string); ok && utf8.RuneCountInString(str) < min {
-					errors.Fields[field.Name] = BindingMinSizeError
-					break
-				}
-				v := reflect.ValueOf(fieldValue)
-				if v.Kind() == reflect.Slice && v.Len() < min {
-					errors.Fields[field.Name] = BindingMinSizeError
-					break
-				}
-			case strings.HasPrefix(rule, "MaxSize("):
-				max, err := strconv.Atoi(rule[8 : len(rule)-1])
-				if err != nil {
-					errors.Overall["MaxSize"] = err.Error()
-					break
-				}
-				if str, ok := fieldValue.(string); ok && utf8.RuneCountInString(str) > max {
-					errors.Fields[field.Name] = BindingMaxSizeError
-					break
-				}
-				v := reflect.ValueOf(fieldValue)
-				if v.Kind() == reflect.Slice && v.Len() > max {
-					errors.Fields[field.Name] = BindingMinSizeError
-					break
-				}
-			case rule == "Email":
-				if !emailPattern.MatchString(fmt.Sprintf("%v", fieldValue)) {
-					errors.Fields[field.Name] = BindingEmailError
-					break
-				}
-			case rule == "Url":
-				str := fmt.Sprintf("%v", fieldValue)
-				if len(str) == 0 {
-					continue
-				} else if !urlPattern.MatchString(str) {
-					errors.Fields[field.Name] = BindingUrlError
-					break
-				}
-			}
-		}
-	}
-}
-
-func mapForm(formStruct reflect.Value, form map[string][]string, errors *Errors) {
-	typ := formStruct.Elem().Type()
-
-	for i := 0; i < typ.NumField(); i++ {
-		typeField := typ.Field(i)
-		if inputFieldName := typeField.Tag.Get("form"); inputFieldName != "" {
-			structField := formStruct.Elem().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++ {
-					setWithProperType(sliceOf, inputValue[i], slice.Index(i), inputFieldName, errors)
-				}
-				formStruct.Elem().Field(i).Set(slice)
-			} else {
-				setWithProperType(typeField.Type.Kind(), inputValue[0], structField, inputFieldName, errors)
-			}
-		}
-	}
-}
-
-// ErrorHandler simply counts the number of errors in the
-// context and, if more than 0, writes a 400 Bad Request
-// response and a JSON payload describing the errors with
-// the "Content-Type" set to "application/json".
-// Middleware remaining on the stack will not even see the request
-// if, by this point, there are any errors.
-// This is a "default" handler, of sorts, and you are
-// welcome to use your own instead. The Bind middleware
-// invokes this automatically for convenience.
-func ErrorHandler(errs Errors, resp http.ResponseWriter) {
-	if errs.Count() > 0 {
-		resp.Header().Set("Content-Type", "application/json; charset=utf-8")
-		if _, ok := errs.Overall[BindingDeserializationError]; ok {
-			resp.WriteHeader(http.StatusBadRequest)
-		} else {
-			resp.WriteHeader(422)
-		}
-		errOutput, _ := json.Marshal(errs)
-		resp.Write(errOutput)
-		return
-	}
-}
-
-// This sets the value in a struct of an indeterminate type to the
-// matching value from the request (via Form middleware) in the
-// same type, so that not all deserialized values have to be strings.
-// Supported types are string, int, float, and bool.
-func setWithProperType(valueKind reflect.Kind, val string, structField reflect.Value, nameInTag string, errors *Errors) {
-	switch valueKind {
-	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		if val == "" {
-			val = "0"
-		}
-		intVal, err := strconv.ParseInt(val, 10, 64)
-		if err != nil {
-			errors.Fields[nameInTag] = BindingIntegerTypeError
-		} else {
-			structField.SetInt(intVal)
-		}
-	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
-		if val == "" {
-			val = "0"
-		}
-		uintVal, err := strconv.ParseUint(val, 10, 64)
-		if err != nil {
-			errors.Fields[nameInTag] = BindingIntegerTypeError
-		} else {
-			structField.SetUint(uintVal)
-		}
-	case reflect.Bool:
-		structField.SetBool(val == "on")
-	case reflect.Float32:
-		if val == "" {
-			val = "0.0"
-		}
-		floatVal, err := strconv.ParseFloat(val, 32)
-		if err != nil {
-			errors.Fields[nameInTag] = BindingFloatTypeError
-		} else {
-			structField.SetFloat(floatVal)
-		}
-	case reflect.Float64:
-		if val == "" {
-			val = "0.0"
-		}
-		floatVal, err := strconv.ParseFloat(val, 64)
-		if err != nil {
-			errors.Fields[nameInTag] = BindingFloatTypeError
-		} else {
-			structField.SetFloat(floatVal)
-		}
-	case reflect.String:
-		structField.SetString(val)
-	}
-}
-
-// Don't pass in pointers to bind to. Can lead to bugs.
-func ensureNotPointer(obj interface{}) {
-	if reflect.TypeOf(obj).Kind() == reflect.Ptr {
-		panic("Pointers are not accepted as binding models")
-	}
-}
-
-// Performs validation and combines errors from validation
-// with errors from deserialization, then maps both the
-// resulting struct and the errors to the context.
-func validateAndMap(obj reflect.Value, ctx *macaron.Context, errors *Errors, ifacePtr ...interface{}) {
-	ctx.Invoke(Validate(obj.Interface()))
-	errors.Combine(getErrors(ctx))
-	ctx.Map(*errors)
-	ctx.Map(obj.Elem().Interface())
-	if len(ifacePtr) > 0 {
-		ctx.MapTo(obj.Elem().Interface(), ifacePtr[0])
-	}
-}
-
-func newErrors() *Errors {
-	return &Errors{make(map[string]string), make(map[string]string)}
-}
-
-func getErrors(ctx *macaron.Context) Errors {
-	return ctx.GetVal(reflect.TypeOf(Errors{})).Interface().(Errors)
-}
-
-type (
-	// Implement the Validator interface to define your own input
-	// validation before the request even gets to your application.
-	// The Validate method will be executed during the validation phase.
-	Validator interface {
-		Validate(*macaron.Context, *Errors, i18n.Locale)
-	}
-)
-
-var (
-	// Maximum amount of memory to use when parsing a multipart form.
-	// Set this to whatever value you prefer; default is 10 MB.
-	MaxMemory = int64(1024 * 1024 * 10)
-)
-
-// Errors represents the contract of the response body when the
-// binding step fails before getting to the application.
-type Errors struct {
-	Overall map[string]string `json:"overall"`
-	Fields  map[string]string `json:"fields"`
-}
-
-// Total errors is the sum of errors with the request overall
-// and errors on individual fields.
-func (err Errors) Count() int {
-	return len(err.Overall) + len(err.Fields)
-}
-
-func (this *Errors) Combine(other Errors) {
-	for key, val := range other.Fields {
-		if _, exists := this.Fields[key]; !exists {
-			this.Fields[key] = val
-		}
-	}
-	for key, val := range other.Overall {
-		if _, exists := this.Overall[key]; !exists {
-			this.Overall[key] = val
-		}
-	}
-}
-
-const (
-	BindingRequireError         string = "Required"
-	BindingAlphaDashError       string = "AlphaDash"
-	BindingAlphaDashDotError    string = "AlphaDashDot"
-	BindingMinSizeError         string = "MinSize"
-	BindingMaxSizeError         string = "MaxSize"
-	BindingEmailError           string = "Email"
-	BindingUrlError             string = "Url"
-	BindingDeserializationError string = "DeserializationError"
-	BindingIntegerTypeError     string = "IntegerTypeError"
-	BindingBooleanTypeError     string = "BooleanTypeError"
-	BindingFloatTypeError       string = "FloatTypeError"
-)