Update go dependencies

vendor/github.com/moul/http2curl/http2curl.go

@@ -0,0 +1,71 @@
+package http2curl
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"sort"
+	"strings"
+)
+
+// CurlCommand contains exec.Command compatible slice + helpers
+type CurlCommand struct {
+	slice []string
+}
+
+// append appends a string to the CurlCommand
+func (c *CurlCommand) append(newSlice ...string) {
+	c.slice = append(c.slice, newSlice...)
+}
+
+// String returns a ready to copy/paste command
+func (c *CurlCommand) String() string {
+	return strings.Join(c.slice, " ")
+}
+
+// nopCloser is used to create a new io.ReadCloser for req.Body
+type nopCloser struct {
+	io.Reader
+}
+
+func bashEscape(str string) string {
+	return `'` + strings.Replace(str, `'`, `'\''`, -1) + `'`
+}
+
+func (nopCloser) Close() error { return nil }
+
+// GetCurlCommand returns a CurlCommand corresponding to an http.Request
+func GetCurlCommand(req *http.Request) (*CurlCommand, error) {
+	command := CurlCommand{}
+
+	command.append("curl")
+
+	command.append("-X", bashEscape(req.Method))
+
+	if req.Body != nil {
+		body, err := ioutil.ReadAll(req.Body)
+		if err != nil {
+			return nil, err
+		}
+		req.Body = nopCloser{bytes.NewBuffer(body)}
+		bodyEscaped := bashEscape(string(body))
+		command.append("-d", bodyEscaped)
+	}
+
+	var keys []string
+
+	for k := range req.Header {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+
+	for _, k := range keys {
+		command.append("-H", bashEscape(fmt.Sprintf("%s: %s", k, strings.Join(req.Header[k], " "))))
+	}
+
+	command.append(bashEscape(req.URL.String()))
+
+	return &command, nil
+}