Initial QSfera import

Server/vendor/github.com/lestrrat-go/httprc/v3/transformer.go

@@ -0,0 +1,37 @@
+package httprc
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+type bytesTransformer struct{}
+
+// BytesTransformer returns a Transformer that reads the entire response body
+// as a byte slice. This is the default Transformer used by httprc.Client
+func BytesTransformer() Transformer[[]byte] {
+	return bytesTransformer{}
+}
+
+func (bytesTransformer) Transform(_ context.Context, res *http.Response) ([]byte, error) {
+	return io.ReadAll(res.Body)
+}
+
+type jsonTransformer[T any] struct{}
+
+// JSONTransformer returns a Transformer that decodes the response body as JSON
+// into the provided type T.
+func JSONTransformer[T any]() Transformer[T] {
+	return jsonTransformer[T]{}
+}
+
+func (jsonTransformer[T]) Transform(_ context.Context, res *http.Response) (T, error) {
+	var v T
+	if err := json.NewDecoder(res.Body).Decode(&v); err != nil {
+		var zero T
+		return zero, err
+	}
+	return v, nil
+}