forked from everytv/test2doc
/
request.go
154 lines (129 loc) · 3 KB
/
request.go
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package doc
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"mime"
"mime/multipart"
"net/http"
"strings"
"text/template"
)
var (
requestTmpl *template.Template
requestFmt = `{{if or .HasBody .HasHeader}}
+ Request {{if .HasContentType}}({{.Header.ContentType}}){{end}}{{with .Header}}
{{.Render}}{{end}}{{if .Attributes}}
+ Attributes
{{range .Attributes}}{{.Render}}
{{end}}{{end}}{{with .Body}}
{{.Render}}{{end}}{{end}}`
)
func init() {
requestTmpl = template.Must(template.New("request").Parse(requestFmt))
}
type Request struct {
Header *Header
Body *Body
Method string
Response *Response
Attributes []Attribute
// Schema
}
func NewRequest(req *http.Request) (*Request, error) {
body1, body2, err := cloneBody(req.Body)
if err != nil {
return nil, err
}
req.Body = nopCloser{body1}
b2bytes := body2.Bytes()
contentType := req.Header.Get("Content-Type")
return &Request{
Header: NewHeader(req.Header),
Body: NewBody(b2bytes, contentType),
Method: req.Method,
Attributes: getAttributesOf(contentType, b2bytes),
}, nil
}
func getAttributesOf(contentType string, body []byte) []Attribute {
var attrs []Attribute
if len(contentType) == 0 {
return attrs
}
mediaType, params, err := mime.ParseMediaType(contentType)
if err != nil {
panic(err)
}
switch mediaType {
case "application/x-www-form-urlencoded":
attrs = parseForm(body)
case "multipart/form-data":
attrs = parseMultipartForm(params["boundary"], body)
}
return attrs
}
func parseForm(body []byte) []Attribute {
pairs := strings.Split(string(body[:]), "&")
attrs := make([]Attribute, 0)
for _, pair := range pairs {
if len(pair) == 0 {
continue
}
kv := strings.Split(pair, "=")
if len(kv) != 2 {
// shoddy validation
panic(fmt.Sprintf("invalid format: %v", pair))
}
key, val := kv[0], kv[1]
attr := attributeOf(key, val)
attrs = append(attrs, attr)
}
return attrs
}
func parseMultipartForm(boundary string, body []byte) []Attribute {
r := bytes.NewReader(body)
reader := multipart.NewReader(r, boundary)
var attrs []Attribute
for {
part, err := reader.NextPart()
if err == io.EOF {
break
}
if err != nil {
panic(err)
}
key := part.FormName()
val, err := ioutil.ReadAll(part)
if err != nil {
panic(err)
}
attr := attributeOf(key, val)
attrs = append(attrs, attr)
}
return attrs
}
func attributeOf(key string, val interface{}) Attribute {
s := fmt.Sprintf("%s", val)
description, isRequired, defaultValue := getPropertyOf(key)
return Attribute{
Name: key,
Description: description,
Value: ParameterValue(s),
Type: paramType(s),
IsRequired: isRequired,
DefaultValue: defaultValue,
}
}
func (r *Request) Render() string {
return render(requestTmpl, r)
}
func (r *Request) HasBody() bool {
return r.Body != nil
}
func (r *Request) HasHeader() bool {
return r.Header != nil && len(r.Header.DisplayHeader) > 0
}
func (r *Request) HasContentType() bool {
return r.Header != nil && len(r.Header.ContentType) > 0
}