/
seekable.go
61 lines (51 loc) · 1.12 KB
/
seekable.go
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// This package provide a method to read and replace http.Request's body.
package gorequest
import (
"errors"
"io"
"io/ioutil"
"net/http"
)
// ---------------------------------------------------
type Seekabler interface {
Bytes() []byte
Read(val []byte) (n int, err error)
SeekToBegin() error
}
type SeekableCloser interface {
Seekabler
io.Closer
}
// ---------------------------------------------------
type readCloser struct {
Seekabler
io.Closer
}
var ErrNoBody = errors.New("no body")
func SeekClose(req *http.Request) (r SeekableCloser, err error) {
if req.Body == nil {
return nil, ErrNoBody
}
var ok bool
if r, ok = req.Body.(SeekableCloser); ok {
return
}
b, err2 := ReadAll(req)
if err2 != nil {
return nil, err2
}
r = NewReader(b)
req.Body = readCloser{r, req.Body}
return
}
func ReadAll(req *http.Request) (b []byte, err error) {
if req.ContentLength > 0 {
b = make([]byte, int(req.ContentLength))
_, err = io.ReadFull(req.Body, b)
return
} else if req.ContentLength == 0 {
return nil, ErrNoBody
}
return ioutil.ReadAll(req.Body)
}
// ---------------------------------------------------