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67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
// Copyright 2014 Manu Martinez-Almeida. All rights reserved.
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// Use of this source code is governed by a MIT style
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// license that can be found in the LICENSE file.
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package binding
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import "net/http"
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const (
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MIMEJSON = "application/json"
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MIMEHTML = "text/html"
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MIMEXML = "application/xml"
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MIMEXML2 = "text/xml"
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MIMEPlain = "text/plain"
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MIMEPOSTForm = "application/x-www-form-urlencoded"
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MIMEMultipartPOSTForm = "multipart/form-data"
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MIMEPROTOBUF = "application/x-protobuf"
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)
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type Binding interface {
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Name() string
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Bind(*http.Request, interface{}) error
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}
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type StructValidator interface {
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// ValidateStruct can receive any kind of type and it should never panic, even if the configuration is not right.
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// If the received type is not a struct, any validation should be skipped and nil must be returned.
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// If the received type is a struct or pointer to a struct, the validation should be performed.
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// If the struct is not valid or the validation itself fails, a descriptive error should be returned.
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// Otherwise nil must be returned.
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ValidateStruct(interface{}) error
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}
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var Validator StructValidator = &defaultValidator{}
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var (
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JSON = jsonBinding{}
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XML = xmlBinding{}
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Form = formBinding{}
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FormPost = formPostBinding{}
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FormMultipart = formMultipartBinding{}
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ProtoBuf = protobufBinding{}
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)
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func Default(method, contentType string) Binding {
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if method == "GET" {
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return Form
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} else {
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switch contentType {
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case MIMEJSON:
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return JSON
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case MIMEXML, MIMEXML2:
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return XML
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case MIMEPROTOBUF:
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return ProtoBuf
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default: //case MIMEPOSTForm, MIMEMultipartPOSTForm:
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return Form
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}
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}
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}
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func validate(obj interface{}) error {
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if Validator == nil {
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return nil
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}
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return Validator.ValidateStruct(obj)
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}
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