form.go

// 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 defaultMemory = 32 * 1024 * 1024

type noBindBody struct{}

func (noBindBody) Name() string {
	return "noBindBody"
}

func (noBindBody) NeedBody() bool {
	return false
}

func (noBindBody) BindBody([]byte, interface{}) error {
	return nil
}

/////////////////////////////////////////////////////////////
type formBinding struct {
	noBindBody
}

func (formBinding) Name() string {
	return "form"
}

func (formBinding) Bind(req *http.Request, obj interface{}) error {
	if err := req.ParseForm(); err != nil {
		return err
	}
	if err := req.ParseMultipartForm(defaultMemory); err != nil {
		if err != http.ErrNotMultipart {
			return err
		}
	}
	if err := mapForm(obj, req.Form); err != nil {
		return err
	}
	return validate(obj)
}

/////////////////////////////////////////////////////////////
type formPostBinding struct {
	noBindBody
}

func (formPostBinding) Name() string {
	return "form-urlencoded"
}

func (formPostBinding) Bind(req *http.Request, obj interface{}) error {
	if err := req.ParseForm(); err != nil {
		return err
	}
	if err := mapForm(obj, req.PostForm); err != nil {
		return err
	}
	return validate(obj)
}

/////////////////////////////////////////////////////////////
type formMultipartBinding struct {
	noBindBody
}

func (formMultipartBinding) Name() string {
	return "multipart/form-data"
}

func (formMultipartBinding) Bind(req *http.Request, obj interface{}) error {
	if err := req.ParseMultipartForm(defaultMemory); err != nil {
		return err
	}
	if err := mappingByPtr(obj, (*multipartRequest)(req), "form"); err != nil {
		return err
	}

	return validate(obj)
}