feat: implement caldav search

vendor/github.com/dolanor/caldav-go/http/request.go

@@ -0,0 +1,39 @@
+package http
+
+import (
+	"github.com/dolanor/caldav-go/utils"
+	"io"
+	"net/http"
+)
+
+// an HTTP request object
+type Request http.Request
+
+// downcasts the request to the native HTTP interface
+func (r *Request) Native() *http.Request {
+	return (*http.Request)(r)
+}
+
+// creates a new HTTP request object
+func NewRequest(method string, urlstr string, body ...io.ReadCloser) (*Request, error) {
+
+	var err error
+	var r = new(http.Request)
+
+	if len(body) > 0 && body[0] != nil {
+		r, err = http.NewRequest(method, urlstr, body[0])
+	} else {
+		r, err = http.NewRequest(method, urlstr, nil)
+	}
+
+	if err != nil {
+		return nil, utils.NewError(NewRequest, "unable to create request", urlstr, err)
+	} else if auth := r.URL.User; auth != nil {
+		pass, _ := auth.Password()
+		r.SetBasicAuth(auth.Username(), pass)
+		r.URL.User = nil
+	}
+
+	return (*Request)(r), nil
+
+}