1 files changed, 119 insertions, 0 deletions
diff --git a/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/string_codec.go b/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/string_codec.go
new file mode 100644
index 000000000..5332b7c3b
--- /dev/null
+++ b/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/string_codec.go
@@ -0,0 +1,119 @@
+// Copyright (C) MongoDB, Inc. 2017-present.
+//
+// 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
+
+package bsoncodec
+
+import (
+	"fmt"
+	"reflect"
+
+	"go.mongodb.org/mongo-driver/bson/bsonoptions"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+)
+
+// StringCodec is the Codec used for struct values.
+type StringCodec struct {
+	DecodeObjectIDAsHex bool
+}
+
+var (
+	defaultStringCodec = NewStringCodec()
+
+	_ ValueCodec  = defaultStringCodec
+	_ typeDecoder = defaultStringCodec
+)
+
+// NewStringCodec returns a StringCodec with options opts.
+func NewStringCodec(opts ...*bsonoptions.StringCodecOptions) *StringCodec {
+	stringOpt := bsonoptions.MergeStringCodecOptions(opts...)
+	return &StringCodec{*stringOpt.DecodeObjectIDAsHex}
+}
+
+// EncodeValue is the ValueEncoder for string types.
+func (sc *StringCodec) EncodeValue(ectx EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+	if val.Kind() != reflect.String {
+		return ValueEncoderError{
+			Name:     "StringEncodeValue",
+			Kinds:    []reflect.Kind{reflect.String},
+			Received: val,
+		}
+	}
+
+	return vw.WriteString(val.String())
+}
+
+func (sc *StringCodec) decodeType(dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
+	if t.Kind() != reflect.String {
+		return emptyValue, ValueDecoderError{
+			Name:     "StringDecodeValue",
+			Kinds:    []reflect.Kind{reflect.String},
+			Received: reflect.Zero(t),
+		}
+	}
+
+	var str string
+	var err error
+	switch vr.Type() {
+	case bsontype.String:
+		str, err = vr.ReadString()
+		if err != nil {
+			return emptyValue, err
+		}
+	case bsontype.ObjectID:
+		oid, err := vr.ReadObjectID()
+		if err != nil {
+			return emptyValue, err
+		}
+		if sc.DecodeObjectIDAsHex {
+			str = oid.Hex()
+		} else {
+			byteArray := [12]byte(oid)
+			str = string(byteArray[:])
+		}
+	case bsontype.Symbol:
+		str, err = vr.ReadSymbol()
+		if err != nil {
+			return emptyValue, err
+		}
+	case bsontype.Binary:
+		data, subtype, err := vr.ReadBinary()
+		if err != nil {
+			return emptyValue, err
+		}
+		if subtype != bsontype.BinaryGeneric && subtype != bsontype.BinaryBinaryOld {
+			return emptyValue, decodeBinaryError{subtype: subtype, typeName: "string"}
+		}
+		str = string(data)
+	case bsontype.Null:
+		if err = vr.ReadNull(); err != nil {
+			return emptyValue, err
+		}
+	case bsontype.Undefined:
+		if err = vr.ReadUndefined(); err != nil {
+			return emptyValue, err
+		}
+	default:
+		return emptyValue, fmt.Errorf("cannot decode %v into a string type", vr.Type())
+	}
+
+	return reflect.ValueOf(str), nil
+}
+
+// DecodeValue is the ValueDecoder for string types.
+func (sc *StringCodec) DecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if !val.CanSet() || val.Kind() != reflect.String {
+		return ValueDecoderError{Name: "StringDecodeValue", Kinds: []reflect.Kind{reflect.String}, Received: val}
+	}
+
+	elem, err := sc.decodeType(dctx, vr, val.Type())
+	if err != nil {
+		return err
+	}
+
+	val.SetString(elem.String())
+	return nil
+}