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// 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 "net/http"
const (
MIMEJSON = "application/json"
MIMEHTML = "text/html"
MIMEXML = "application/xml"
MIMEXML2 = "text/xml"
MIMEPlain = "text/plain"
MIMEPOSTForm = "application/x-www-form-urlencoded"
MIMEMultipartPOSTForm = "multipart/form-data"
)
type Binding interface {
Name() string
Bind(*http.Request, interface{}) error
}
type StructValidator interface {
// ValidateStruct can receive any kind of type and it should never panic, even if the configuration is not right.
// If the received type is not a struct, any validation should be skipped and nil must be returned.
// If the received type is a struct or pointer to a struct, the validation should be performed.
// If the struct is not valid or the validation itself fails, a descriptive error should be returned.
// Otherwise nil must be returned.
ValidateStruct(interface{}) error
}
var Validator StructValidator = &defaultValidator{}
var (
JSON = jsonBinding{}
XML = xmlBinding{}
Form = formBinding{}
)
func Default(method, contentType string) Binding {
if method == "GET" {
return Form
} else {
switch contentType {
case MIMEJSON:
return JSON
case MIMEXML, MIMEXML2:
return XML
default: //case MIMEPOSTForm, MIMEMultipartPOSTForm:
return Form
}
}
}
func validate(obj interface{}) error {
if Validator == nil {
return nil
}
return Validator.ValidateStruct(obj)
}
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