Update xutil

README.md

@@ -15,6 +15,10 @@ go get github.com/mix-go/xutil
 | Function                                                                         | Description                      |  
 |----------------------------------------------------------------------------------|----------------------------------|
 | xhttp.Request(method string, u string, opts ...RequestOption) (*Response, error) | Execute an http request.         |
+| xhttp.WithBody(body Body) RequestOption                                          | Set configuration item           |
+| WithHeader(header http.Header) RequestOption                                     | Set configuration item           |
+| WithContentType(contentType string) RequestOption                                | Set configuration item           |
+| WithTimeout(timeout time.Duration) RequestOption                                 | Set configuration item           |
 | xhttp.BuildJSON(v interface{}) Body                                              | Generate json string             |
 | xhttp.BuildQuery(m map[string]string) Body                                       | Generate urlencoded query string |
 
@@ -33,9 +37,11 @@ go get github.com/mix-go/xutil
 
 ## xconv
 
-| Function                                                | Description            |  
-|---------------------------------------------------------|------------------------|
-| xconv.StructToMap(i interface{}) map[string]interface{} | Convert struct to map. |
+| Function                                                | Description                       |  
+|---------------------------------------------------------|-----------------------------------|
+| xconv.StructToMap(i interface{}) map[string]interface{} | Convert struct to map.            |
+| xconv.StringToBytes(s string) []byte                    | Convert string to bytes (0 copy). |
+| xconv.BytesToString(b []byte) string                    | Convert bytes to bytes (0 copy).  |
 
 ## xcrypt
 

xconv/conv.go

@@ -3,8 +3,24 @@ package xconv
 import (
 	"reflect"
 	"strings"
+	"unsafe"
 )
 
+// StringToBytes converts string to byte slice without a memory allocation.
+func StringToBytes(s string) []byte {
+	return *(*[]byte)(unsafe.Pointer(
+		&struct {
+			string
+			Cap int
+		}{s, len(s)},
+	))
+}
+
+// BytesToString converts byte slice to string without a memory allocation.
+func BytesToString(b []byte) string {
+	return *(*string)(unsafe.Pointer(&b))
+}
+
 // StructToMap Convert struct to map.
 // This function first tries to use the bson tag, and if the bson tag does not exist, it will use the json tag.
 // if both bson and json tags do not exist, then it will use the field name as the key. Additionally,

xhttp/options.go

@@ -1,6 +1,7 @@
 package xhttp
 
 import (
+	"github.com/mix-go/xutil/xconv"
 	"net/http"
 	"time"
 )
@@ -67,8 +68,14 @@ func WithBody(body Body) RequestOption {
 	}}
 }
 
+func WithBodyBytes(body []byte) RequestOption {
+	return &funcRequestOption{func(opt *requestOptions) {
+		opt.Body = body
+	}}
+}
+
 func WithBodyString(body string) RequestOption {
 	return &funcRequestOption{func(opt *requestOptions) {
-		opt.Body = Body(body)
+		opt.Body = xconv.StringToBytes(body)
 	}}
 }

xhttp/request.go

@@ -1,6 +1,7 @@
 package xhttp
 
 import (
+	"github.com/mix-go/xutil/xconv"
 	"io"
 	"net/http"
 	"net/url"
@@ -15,7 +16,7 @@ type Response struct {
 type Body []byte
 
 func (t Body) String() string {
-	return string(t)
+	return xconv.BytesToString(t)
 }
 
 func newResponse(r *http.Response) *Response {
@@ -46,9 +47,11 @@ func Request(method string, u string, opts ...RequestOption) (*Response, error)
 	req := &http.Request{
 		Method: method,
 		URL:    URL,
-		Body:   io.NopCloser(strings.NewReader(opt.Body.String())),
 		Header: opt.Header,
 	}
+	if opt.Body != nil {
+		req.Body = io.NopCloser(strings.NewReader(opt.Body.String()))
+	}
 	r, err := cli.Do(req)
 	resp := newResponse(r)
 	return resp, err