1 files changed, 501 insertions, 0 deletions
diff --git a/vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/header_value.go b/vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/header_value.go
new file mode 100644
index 0000000..d7786f9
--- /dev/null
+++ b/vendor/github.com/aws/aws-sdk-go/private/protocol/eventstream/header_value.go
@@ -0,0 +1,501 @@
+package eventstream
+
+import (
+	"encoding/base64"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"strconv"
+	"time"
+)
+
+const maxHeaderValueLen = 1<<15 - 1 // 2^15-1 or 32KB - 1
+
+// valueType is the EventStream header value type.
+type valueType uint8
+
+// Header value types
+const (
+	trueValueType valueType = iota
+	falseValueType
+	int8ValueType  // Byte
+	int16ValueType // Short
+	int32ValueType // Integer
+	int64ValueType // Long
+	bytesValueType
+	stringValueType
+	timestampValueType
+	uuidValueType
+)
+
+func (t valueType) String() string {
+	switch t {
+	case trueValueType:
+		return "bool"
+	case falseValueType:
+		return "bool"
+	case int8ValueType:
+		return "int8"
+	case int16ValueType:
+		return "int16"
+	case int32ValueType:
+		return "int32"
+	case int64ValueType:
+		return "int64"
+	case bytesValueType:
+		return "byte_array"
+	case stringValueType:
+		return "string"
+	case timestampValueType:
+		return "timestamp"
+	case uuidValueType:
+		return "uuid"
+	default:
+		return fmt.Sprintf("unknown value type %d", uint8(t))
+	}
+}
+
+type rawValue struct {
+	Type  valueType
+	Len   uint16 // Only set for variable length slices
+	Value []byte // byte representation of value, BigEndian encoding.
+}
+
+func (r rawValue) encodeScalar(w io.Writer, v interface{}) error {
+	return binaryWriteFields(w, binary.BigEndian,
+		r.Type,
+		v,
+	)
+}
+
+func (r rawValue) encodeFixedSlice(w io.Writer, v []byte) error {
+	binary.Write(w, binary.BigEndian, r.Type)
+
+	_, err := w.Write(v)
+	return err
+}
+
+func (r rawValue) encodeBytes(w io.Writer, v []byte) error {
+	if len(v) > maxHeaderValueLen {
+		return LengthError{
+			Part: "header value",
+			Want: maxHeaderValueLen, Have: len(v),
+			Value: v,
+		}
+	}
+	r.Len = uint16(len(v))
+
+	err := binaryWriteFields(w, binary.BigEndian,
+		r.Type,
+		r.Len,
+	)
+	if err != nil {
+		return err
+	}
+
+	_, err = w.Write(v)
+	return err
+}
+
+func (r rawValue) encodeString(w io.Writer, v string) error {
+	if len(v) > maxHeaderValueLen {
+		return LengthError{
+			Part: "header value",
+			Want: maxHeaderValueLen, Have: len(v),
+			Value: v,
+		}
+	}
+	r.Len = uint16(len(v))
+
+	type stringWriter interface {
+		WriteString(string) (int, error)
+	}
+
+	err := binaryWriteFields(w, binary.BigEndian,
+		r.Type,
+		r.Len,
+	)
+	if err != nil {
+		return err
+	}
+
+	if sw, ok := w.(stringWriter); ok {
+		_, err = sw.WriteString(v)
+	} else {
+		_, err = w.Write([]byte(v))
+	}
+
+	return err
+}
+
+func decodeFixedBytesValue(r io.Reader, buf []byte) error {
+	_, err := io.ReadFull(r, buf)
+	return err
+}
+
+func decodeBytesValue(r io.Reader) ([]byte, error) {
+	var raw rawValue
+	var err error
+	raw.Len, err = decodeUint16(r)
+	if err != nil {
+		return nil, err
+	}
+
+	buf := make([]byte, raw.Len)
+	_, err = io.ReadFull(r, buf)
+	if err != nil {
+		return nil, err
+	}
+
+	return buf, nil
+}
+
+func decodeStringValue(r io.Reader) (string, error) {
+	v, err := decodeBytesValue(r)
+	return string(v), err
+}
+
+// Value represents the abstract header value.
+type Value interface {
+	Get() interface{}
+	String() string
+	valueType() valueType
+	encode(io.Writer) error
+}
+
+// An BoolValue provides eventstream encoding, and representation
+// of a Go bool value.
+type BoolValue bool
+
+// Get returns the underlying type
+func (v BoolValue) Get() interface{} {
+	return bool(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (v BoolValue) valueType() valueType {
+	if v {
+		return trueValueType
+	}
+	return falseValueType
+}
+
+func (v BoolValue) String() string {
+	return strconv.FormatBool(bool(v))
+}
+
+// encode encodes the BoolValue into an eventstream binary value
+// representation.
+func (v BoolValue) encode(w io.Writer) error {
+	return binary.Write(w, binary.BigEndian, v.valueType())
+}
+
+// An Int8Value provides eventstream encoding, and representation of a Go
+// int8 value.
+type Int8Value int8
+
+// Get returns the underlying value.
+func (v Int8Value) Get() interface{} {
+	return int8(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int8Value) valueType() valueType {
+	return int8ValueType
+}
+
+func (v Int8Value) String() string {
+	return fmt.Sprintf("0x%02x", int8(v))
+}
+
+// encode encodes the Int8Value into an eventstream binary value
+// representation.
+func (v Int8Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int8Value) decode(r io.Reader) error {
+	n, err := decodeUint8(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int8Value(n)
+	return nil
+}
+
+// An Int16Value provides eventstream encoding, and representation of a Go
+// int16 value.
+type Int16Value int16
+
+// Get returns the underlying value.
+func (v Int16Value) Get() interface{} {
+	return int16(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int16Value) valueType() valueType {
+	return int16ValueType
+}
+
+func (v Int16Value) String() string {
+	return fmt.Sprintf("0x%04x", int16(v))
+}
+
+// encode encodes the Int16Value into an eventstream binary value
+// representation.
+func (v Int16Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int16Value) decode(r io.Reader) error {
+	n, err := decodeUint16(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int16Value(n)
+	return nil
+}
+
+// An Int32Value provides eventstream encoding, and representation of a Go
+// int32 value.
+type Int32Value int32
+
+// Get returns the underlying value.
+func (v Int32Value) Get() interface{} {
+	return int32(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int32Value) valueType() valueType {
+	return int32ValueType
+}
+
+func (v Int32Value) String() string {
+	return fmt.Sprintf("0x%08x", int32(v))
+}
+
+// encode encodes the Int32Value into an eventstream binary value
+// representation.
+func (v Int32Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int32Value) decode(r io.Reader) error {
+	n, err := decodeUint32(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int32Value(n)
+	return nil
+}
+
+// An Int64Value provides eventstream encoding, and representation of a Go
+// int64 value.
+type Int64Value int64
+
+// Get returns the underlying value.
+func (v Int64Value) Get() interface{} {
+	return int64(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (Int64Value) valueType() valueType {
+	return int64ValueType
+}
+
+func (v Int64Value) String() string {
+	return fmt.Sprintf("0x%016x", int64(v))
+}
+
+// encode encodes the Int64Value into an eventstream binary value
+// representation.
+func (v Int64Value) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+	return raw.encodeScalar(w, v)
+}
+
+func (v *Int64Value) decode(r io.Reader) error {
+	n, err := decodeUint64(r)
+	if err != nil {
+		return err
+	}
+
+	*v = Int64Value(n)
+	return nil
+}
+
+// An BytesValue provides eventstream encoding, and representation of a Go
+// byte slice.
+type BytesValue []byte
+
+// Get returns the underlying value.
+func (v BytesValue) Get() interface{} {
+	return []byte(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (BytesValue) valueType() valueType {
+	return bytesValueType
+}
+
+func (v BytesValue) String() string {
+	return base64.StdEncoding.EncodeToString([]byte(v))
+}
+
+// encode encodes the BytesValue into an eventstream binary value
+// representation.
+func (v BytesValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeBytes(w, []byte(v))
+}
+
+func (v *BytesValue) decode(r io.Reader) error {
+	buf, err := decodeBytesValue(r)
+	if err != nil {
+		return err
+	}
+
+	*v = BytesValue(buf)
+	return nil
+}
+
+// An StringValue provides eventstream encoding, and representation of a Go
+// string.
+type StringValue string
+
+// Get returns the underlying value.
+func (v StringValue) Get() interface{} {
+	return string(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (StringValue) valueType() valueType {
+	return stringValueType
+}
+
+func (v StringValue) String() string {
+	return string(v)
+}
+
+// encode encodes the StringValue into an eventstream binary value
+// representation.
+func (v StringValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeString(w, string(v))
+}
+
+func (v *StringValue) decode(r io.Reader) error {
+	s, err := decodeStringValue(r)
+	if err != nil {
+		return err
+	}
+
+	*v = StringValue(s)
+	return nil
+}
+
+// An TimestampValue provides eventstream encoding, and representation of a Go
+// timestamp.
+type TimestampValue time.Time
+
+// Get returns the underlying value.
+func (v TimestampValue) Get() interface{} {
+	return time.Time(v)
+}
+
+// valueType returns the EventStream header value type value.
+func (TimestampValue) valueType() valueType {
+	return timestampValueType
+}
+
+func (v TimestampValue) epochMilli() int64 {
+	nano := time.Time(v).UnixNano()
+	msec := nano / int64(time.Millisecond)
+	return msec
+}
+
+func (v TimestampValue) String() string {
+	msec := v.epochMilli()
+	return strconv.FormatInt(msec, 10)
+}
+
+// encode encodes the TimestampValue into an eventstream binary value
+// representation.
+func (v TimestampValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	msec := v.epochMilli()
+	return raw.encodeScalar(w, msec)
+}
+
+func (v *TimestampValue) decode(r io.Reader) error {
+	n, err := decodeUint64(r)
+	if err != nil {
+		return err
+	}
+
+	*v = TimestampValue(timeFromEpochMilli(int64(n)))
+	return nil
+}
+
+func timeFromEpochMilli(t int64) time.Time {
+	secs := t / 1e3
+	msec := t % 1e3
+	return time.Unix(secs, msec*int64(time.Millisecond))
+}
+
+// An UUIDValue provides eventstream encoding, and representation of a UUID
+// value.
+type UUIDValue [16]byte
+
+// Get returns the underlying value.
+func (v UUIDValue) Get() interface{} {
+	return v[:]
+}
+
+// valueType returns the EventStream header value type value.
+func (UUIDValue) valueType() valueType {
+	return uuidValueType
+}
+
+func (v UUIDValue) String() string {
+	return fmt.Sprintf(`%X-%X-%X-%X-%X`, v[0:4], v[4:6], v[6:8], v[8:10], v[10:])
+}
+
+// encode encodes the UUIDValue into an eventstream binary value
+// representation.
+func (v UUIDValue) encode(w io.Writer) error {
+	raw := rawValue{
+		Type: v.valueType(),
+	}
+
+	return raw.encodeFixedSlice(w, v[:])
+}
+
+func (v *UUIDValue) decode(r io.Reader) error {
+	tv := (*v)[:]
+	return decodeFixedBytesValue(r, tv)
+}