Vendor dependencies for GCS

vendor/cloud.google.com/go/spanner/protoutils.go

@@ -0,0 +1,113 @@
+/*
+Copyright 2017 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package spanner
+
+import (
+	"encoding/base64"
+	"strconv"
+	"time"
+
+	"cloud.google.com/go/civil"
+	proto3 "github.com/golang/protobuf/ptypes/struct"
+	sppb "google.golang.org/genproto/googleapis/spanner/v1"
+)
+
+// Helpers to generate protobuf values and Cloud Spanner types.
+
+func stringProto(s string) *proto3.Value {
+	return &proto3.Value{Kind: stringKind(s)}
+}
+
+func stringKind(s string) *proto3.Value_StringValue {
+	return &proto3.Value_StringValue{StringValue: s}
+}
+
+func stringType() *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_STRING}
+}
+
+func boolProto(b bool) *proto3.Value {
+	return &proto3.Value{Kind: &proto3.Value_BoolValue{BoolValue: b}}
+}
+
+func boolType() *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_BOOL}
+}
+
+func intProto(n int64) *proto3.Value {
+	return &proto3.Value{Kind: &proto3.Value_StringValue{StringValue: strconv.FormatInt(n, 10)}}
+}
+
+func intType() *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_INT64}
+}
+
+func floatProto(n float64) *proto3.Value {
+	return &proto3.Value{Kind: &proto3.Value_NumberValue{NumberValue: n}}
+}
+
+func floatType() *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_FLOAT64}
+}
+
+func bytesProto(b []byte) *proto3.Value {
+	return &proto3.Value{Kind: &proto3.Value_StringValue{StringValue: base64.StdEncoding.EncodeToString(b)}}
+}
+
+func bytesType() *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_BYTES}
+}
+
+func timeProto(t time.Time) *proto3.Value {
+	return stringProto(t.UTC().Format(time.RFC3339Nano))
+}
+
+func timeType() *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_TIMESTAMP}
+}
+
+func dateProto(d civil.Date) *proto3.Value {
+	return stringProto(d.String())
+}
+
+func dateType() *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_DATE}
+}
+
+func listProto(p ...*proto3.Value) *proto3.Value {
+	return &proto3.Value{Kind: &proto3.Value_ListValue{ListValue: &proto3.ListValue{Values: p}}}
+}
+
+func listValueProto(p ...*proto3.Value) *proto3.ListValue {
+	return &proto3.ListValue{Values: p}
+}
+
+func listType(t *sppb.Type) *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_ARRAY, ArrayElementType: t}
+}
+
+func mkField(n string, t *sppb.Type) *sppb.StructType_Field {
+	return &sppb.StructType_Field{n, t}
+}
+
+func structType(fields ...*sppb.StructType_Field) *sppb.Type {
+	return &sppb.Type{Code: sppb.TypeCode_STRUCT, StructType: &sppb.StructType{Fields: fields}}
+}
+
+func nullProto() *proto3.Value {
+	return &proto3.Value{Kind: &proto3.Value_NullValue{NullValue: proto3.NullValue_NULL_VALUE}}
+}