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path: root/src/kube2msb/vendor/github.com/ugorji/go/codec/msgpack.go
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-rw-r--r--src/kube2msb/vendor/github.com/ugorji/go/codec/msgpack.go845
1 files changed, 845 insertions, 0 deletions
diff --git a/src/kube2msb/vendor/github.com/ugorji/go/codec/msgpack.go b/src/kube2msb/vendor/github.com/ugorji/go/codec/msgpack.go
new file mode 100644
index 0000000..f9f8723
--- /dev/null
+++ b/src/kube2msb/vendor/github.com/ugorji/go/codec/msgpack.go
@@ -0,0 +1,845 @@
+// Copyright (c) 2012-2015 Ugorji Nwoke. All rights reserved.
+// Use of this source code is governed by a MIT license found in the LICENSE file.
+
+/*
+MSGPACK
+
+Msgpack-c implementation powers the c, c++, python, ruby, etc libraries.
+We need to maintain compatibility with it and how it encodes integer values
+without caring about the type.
+
+For compatibility with behaviour of msgpack-c reference implementation:
+ - Go intX (>0) and uintX
+ IS ENCODED AS
+ msgpack +ve fixnum, unsigned
+ - Go intX (<0)
+ IS ENCODED AS
+ msgpack -ve fixnum, signed
+
+*/
+package codec
+
+import (
+ "fmt"
+ "io"
+ "math"
+ "net/rpc"
+ "reflect"
+)
+
+const (
+ mpPosFixNumMin byte = 0x00
+ mpPosFixNumMax = 0x7f
+ mpFixMapMin = 0x80
+ mpFixMapMax = 0x8f
+ mpFixArrayMin = 0x90
+ mpFixArrayMax = 0x9f
+ mpFixStrMin = 0xa0
+ mpFixStrMax = 0xbf
+ mpNil = 0xc0
+ _ = 0xc1
+ mpFalse = 0xc2
+ mpTrue = 0xc3
+ mpFloat = 0xca
+ mpDouble = 0xcb
+ mpUint8 = 0xcc
+ mpUint16 = 0xcd
+ mpUint32 = 0xce
+ mpUint64 = 0xcf
+ mpInt8 = 0xd0
+ mpInt16 = 0xd1
+ mpInt32 = 0xd2
+ mpInt64 = 0xd3
+
+ // extensions below
+ mpBin8 = 0xc4
+ mpBin16 = 0xc5
+ mpBin32 = 0xc6
+ mpExt8 = 0xc7
+ mpExt16 = 0xc8
+ mpExt32 = 0xc9
+ mpFixExt1 = 0xd4
+ mpFixExt2 = 0xd5
+ mpFixExt4 = 0xd6
+ mpFixExt8 = 0xd7
+ mpFixExt16 = 0xd8
+
+ mpStr8 = 0xd9 // new
+ mpStr16 = 0xda
+ mpStr32 = 0xdb
+
+ mpArray16 = 0xdc
+ mpArray32 = 0xdd
+
+ mpMap16 = 0xde
+ mpMap32 = 0xdf
+
+ mpNegFixNumMin = 0xe0
+ mpNegFixNumMax = 0xff
+)
+
+// MsgpackSpecRpcMultiArgs is a special type which signifies to the MsgpackSpecRpcCodec
+// that the backend RPC service takes multiple arguments, which have been arranged
+// in sequence in the slice.
+//
+// The Codec then passes it AS-IS to the rpc service (without wrapping it in an
+// array of 1 element).
+type MsgpackSpecRpcMultiArgs []interface{}
+
+// A MsgpackContainer type specifies the different types of msgpackContainers.
+type msgpackContainerType struct {
+ fixCutoff int
+ bFixMin, b8, b16, b32 byte
+ hasFixMin, has8, has8Always bool
+}
+
+var (
+ msgpackContainerStr = msgpackContainerType{32, mpFixStrMin, mpStr8, mpStr16, mpStr32, true, true, false}
+ msgpackContainerBin = msgpackContainerType{0, 0, mpBin8, mpBin16, mpBin32, false, true, true}
+ msgpackContainerList = msgpackContainerType{16, mpFixArrayMin, 0, mpArray16, mpArray32, true, false, false}
+ msgpackContainerMap = msgpackContainerType{16, mpFixMapMin, 0, mpMap16, mpMap32, true, false, false}
+)
+
+//---------------------------------------------
+
+type msgpackEncDriver struct {
+ noBuiltInTypes
+ encNoSeparator
+ e *Encoder
+ w encWriter
+ h *MsgpackHandle
+ x [8]byte
+}
+
+func (e *msgpackEncDriver) EncodeNil() {
+ e.w.writen1(mpNil)
+}
+
+func (e *msgpackEncDriver) EncodeInt(i int64) {
+ if i >= 0 {
+ e.EncodeUint(uint64(i))
+ } else if i >= -32 {
+ e.w.writen1(byte(i))
+ } else if i >= math.MinInt8 {
+ e.w.writen2(mpInt8, byte(i))
+ } else if i >= math.MinInt16 {
+ e.w.writen1(mpInt16)
+ bigenHelper{e.x[:2], e.w}.writeUint16(uint16(i))
+ } else if i >= math.MinInt32 {
+ e.w.writen1(mpInt32)
+ bigenHelper{e.x[:4], e.w}.writeUint32(uint32(i))
+ } else {
+ e.w.writen1(mpInt64)
+ bigenHelper{e.x[:8], e.w}.writeUint64(uint64(i))
+ }
+}
+
+func (e *msgpackEncDriver) EncodeUint(i uint64) {
+ if i <= math.MaxInt8 {
+ e.w.writen1(byte(i))
+ } else if i <= math.MaxUint8 {
+ e.w.writen2(mpUint8, byte(i))
+ } else if i <= math.MaxUint16 {
+ e.w.writen1(mpUint16)
+ bigenHelper{e.x[:2], e.w}.writeUint16(uint16(i))
+ } else if i <= math.MaxUint32 {
+ e.w.writen1(mpUint32)
+ bigenHelper{e.x[:4], e.w}.writeUint32(uint32(i))
+ } else {
+ e.w.writen1(mpUint64)
+ bigenHelper{e.x[:8], e.w}.writeUint64(uint64(i))
+ }
+}
+
+func (e *msgpackEncDriver) EncodeBool(b bool) {
+ if b {
+ e.w.writen1(mpTrue)
+ } else {
+ e.w.writen1(mpFalse)
+ }
+}
+
+func (e *msgpackEncDriver) EncodeFloat32(f float32) {
+ e.w.writen1(mpFloat)
+ bigenHelper{e.x[:4], e.w}.writeUint32(math.Float32bits(f))
+}
+
+func (e *msgpackEncDriver) EncodeFloat64(f float64) {
+ e.w.writen1(mpDouble)
+ bigenHelper{e.x[:8], e.w}.writeUint64(math.Float64bits(f))
+}
+
+func (e *msgpackEncDriver) EncodeExt(v interface{}, xtag uint64, ext Ext, _ *Encoder) {
+ bs := ext.WriteExt(v)
+ if bs == nil {
+ e.EncodeNil()
+ return
+ }
+ if e.h.WriteExt {
+ e.encodeExtPreamble(uint8(xtag), len(bs))
+ e.w.writeb(bs)
+ } else {
+ e.EncodeStringBytes(c_RAW, bs)
+ }
+}
+
+func (e *msgpackEncDriver) EncodeRawExt(re *RawExt, _ *Encoder) {
+ e.encodeExtPreamble(uint8(re.Tag), len(re.Data))
+ e.w.writeb(re.Data)
+}
+
+func (e *msgpackEncDriver) encodeExtPreamble(xtag byte, l int) {
+ if l == 1 {
+ e.w.writen2(mpFixExt1, xtag)
+ } else if l == 2 {
+ e.w.writen2(mpFixExt2, xtag)
+ } else if l == 4 {
+ e.w.writen2(mpFixExt4, xtag)
+ } else if l == 8 {
+ e.w.writen2(mpFixExt8, xtag)
+ } else if l == 16 {
+ e.w.writen2(mpFixExt16, xtag)
+ } else if l < 256 {
+ e.w.writen2(mpExt8, byte(l))
+ e.w.writen1(xtag)
+ } else if l < 65536 {
+ e.w.writen1(mpExt16)
+ bigenHelper{e.x[:2], e.w}.writeUint16(uint16(l))
+ e.w.writen1(xtag)
+ } else {
+ e.w.writen1(mpExt32)
+ bigenHelper{e.x[:4], e.w}.writeUint32(uint32(l))
+ e.w.writen1(xtag)
+ }
+}
+
+func (e *msgpackEncDriver) EncodeArrayStart(length int) {
+ e.writeContainerLen(msgpackContainerList, length)
+}
+
+func (e *msgpackEncDriver) EncodeMapStart(length int) {
+ e.writeContainerLen(msgpackContainerMap, length)
+}
+
+func (e *msgpackEncDriver) EncodeString(c charEncoding, s string) {
+ if c == c_RAW && e.h.WriteExt {
+ e.writeContainerLen(msgpackContainerBin, len(s))
+ } else {
+ e.writeContainerLen(msgpackContainerStr, len(s))
+ }
+ if len(s) > 0 {
+ e.w.writestr(s)
+ }
+}
+
+func (e *msgpackEncDriver) EncodeSymbol(v string) {
+ e.EncodeString(c_UTF8, v)
+}
+
+func (e *msgpackEncDriver) EncodeStringBytes(c charEncoding, bs []byte) {
+ if c == c_RAW && e.h.WriteExt {
+ e.writeContainerLen(msgpackContainerBin, len(bs))
+ } else {
+ e.writeContainerLen(msgpackContainerStr, len(bs))
+ }
+ if len(bs) > 0 {
+ e.w.writeb(bs)
+ }
+}
+
+func (e *msgpackEncDriver) writeContainerLen(ct msgpackContainerType, l int) {
+ if ct.hasFixMin && l < ct.fixCutoff {
+ e.w.writen1(ct.bFixMin | byte(l))
+ } else if ct.has8 && l < 256 && (ct.has8Always || e.h.WriteExt) {
+ e.w.writen2(ct.b8, uint8(l))
+ } else if l < 65536 {
+ e.w.writen1(ct.b16)
+ bigenHelper{e.x[:2], e.w}.writeUint16(uint16(l))
+ } else {
+ e.w.writen1(ct.b32)
+ bigenHelper{e.x[:4], e.w}.writeUint32(uint32(l))
+ }
+}
+
+//---------------------------------------------
+
+type msgpackDecDriver struct {
+ d *Decoder
+ r decReader // *Decoder decReader decReaderT
+ h *MsgpackHandle
+ b [scratchByteArrayLen]byte
+ bd byte
+ bdRead bool
+ br bool // bytes reader
+ noBuiltInTypes
+ noStreamingCodec
+ decNoSeparator
+}
+
+// Note: This returns either a primitive (int, bool, etc) for non-containers,
+// or a containerType, or a specific type denoting nil or extension.
+// It is called when a nil interface{} is passed, leaving it up to the DecDriver
+// to introspect the stream and decide how best to decode.
+// It deciphers the value by looking at the stream first.
+func (d *msgpackDecDriver) DecodeNaked() {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ bd := d.bd
+ n := &d.d.n
+ var decodeFurther bool
+
+ switch bd {
+ case mpNil:
+ n.v = valueTypeNil
+ d.bdRead = false
+ case mpFalse:
+ n.v = valueTypeBool
+ n.b = false
+ case mpTrue:
+ n.v = valueTypeBool
+ n.b = true
+
+ case mpFloat:
+ n.v = valueTypeFloat
+ n.f = float64(math.Float32frombits(bigen.Uint32(d.r.readx(4))))
+ case mpDouble:
+ n.v = valueTypeFloat
+ n.f = math.Float64frombits(bigen.Uint64(d.r.readx(8)))
+
+ case mpUint8:
+ n.v = valueTypeUint
+ n.u = uint64(d.r.readn1())
+ case mpUint16:
+ n.v = valueTypeUint
+ n.u = uint64(bigen.Uint16(d.r.readx(2)))
+ case mpUint32:
+ n.v = valueTypeUint
+ n.u = uint64(bigen.Uint32(d.r.readx(4)))
+ case mpUint64:
+ n.v = valueTypeUint
+ n.u = uint64(bigen.Uint64(d.r.readx(8)))
+
+ case mpInt8:
+ n.v = valueTypeInt
+ n.i = int64(int8(d.r.readn1()))
+ case mpInt16:
+ n.v = valueTypeInt
+ n.i = int64(int16(bigen.Uint16(d.r.readx(2))))
+ case mpInt32:
+ n.v = valueTypeInt
+ n.i = int64(int32(bigen.Uint32(d.r.readx(4))))
+ case mpInt64:
+ n.v = valueTypeInt
+ n.i = int64(int64(bigen.Uint64(d.r.readx(8))))
+
+ default:
+ switch {
+ case bd >= mpPosFixNumMin && bd <= mpPosFixNumMax:
+ // positive fixnum (always signed)
+ n.v = valueTypeInt
+ n.i = int64(int8(bd))
+ case bd >= mpNegFixNumMin && bd <= mpNegFixNumMax:
+ // negative fixnum
+ n.v = valueTypeInt
+ n.i = int64(int8(bd))
+ case bd == mpStr8, bd == mpStr16, bd == mpStr32, bd >= mpFixStrMin && bd <= mpFixStrMax:
+ if d.h.RawToString {
+ n.v = valueTypeString
+ n.s = d.DecodeString()
+ } else {
+ n.v = valueTypeBytes
+ n.l = d.DecodeBytes(nil, false, false)
+ }
+ case bd == mpBin8, bd == mpBin16, bd == mpBin32:
+ n.v = valueTypeBytes
+ n.l = d.DecodeBytes(nil, false, false)
+ case bd == mpArray16, bd == mpArray32, bd >= mpFixArrayMin && bd <= mpFixArrayMax:
+ n.v = valueTypeArray
+ decodeFurther = true
+ case bd == mpMap16, bd == mpMap32, bd >= mpFixMapMin && bd <= mpFixMapMax:
+ n.v = valueTypeMap
+ decodeFurther = true
+ case bd >= mpFixExt1 && bd <= mpFixExt16, bd >= mpExt8 && bd <= mpExt32:
+ n.v = valueTypeExt
+ clen := d.readExtLen()
+ n.u = uint64(d.r.readn1())
+ n.l = d.r.readx(clen)
+ default:
+ d.d.errorf("Nil-Deciphered DecodeValue: %s: hex: %x, dec: %d", msgBadDesc, bd, bd)
+ }
+ }
+ if !decodeFurther {
+ d.bdRead = false
+ }
+ if n.v == valueTypeUint && d.h.SignedInteger {
+ n.v = valueTypeInt
+ n.i = int64(n.u)
+ }
+ return
+}
+
+// int can be decoded from msgpack type: intXXX or uintXXX
+func (d *msgpackDecDriver) DecodeInt(bitsize uint8) (i int64) {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ switch d.bd {
+ case mpUint8:
+ i = int64(uint64(d.r.readn1()))
+ case mpUint16:
+ i = int64(uint64(bigen.Uint16(d.r.readx(2))))
+ case mpUint32:
+ i = int64(uint64(bigen.Uint32(d.r.readx(4))))
+ case mpUint64:
+ i = int64(bigen.Uint64(d.r.readx(8)))
+ case mpInt8:
+ i = int64(int8(d.r.readn1()))
+ case mpInt16:
+ i = int64(int16(bigen.Uint16(d.r.readx(2))))
+ case mpInt32:
+ i = int64(int32(bigen.Uint32(d.r.readx(4))))
+ case mpInt64:
+ i = int64(bigen.Uint64(d.r.readx(8)))
+ default:
+ switch {
+ case d.bd >= mpPosFixNumMin && d.bd <= mpPosFixNumMax:
+ i = int64(int8(d.bd))
+ case d.bd >= mpNegFixNumMin && d.bd <= mpNegFixNumMax:
+ i = int64(int8(d.bd))
+ default:
+ d.d.errorf("Unhandled single-byte unsigned integer value: %s: %x", msgBadDesc, d.bd)
+ return
+ }
+ }
+ // check overflow (logic adapted from std pkg reflect/value.go OverflowUint()
+ if bitsize > 0 {
+ if trunc := (i << (64 - bitsize)) >> (64 - bitsize); i != trunc {
+ d.d.errorf("Overflow int value: %v", i)
+ return
+ }
+ }
+ d.bdRead = false
+ return
+}
+
+// uint can be decoded from msgpack type: intXXX or uintXXX
+func (d *msgpackDecDriver) DecodeUint(bitsize uint8) (ui uint64) {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ switch d.bd {
+ case mpUint8:
+ ui = uint64(d.r.readn1())
+ case mpUint16:
+ ui = uint64(bigen.Uint16(d.r.readx(2)))
+ case mpUint32:
+ ui = uint64(bigen.Uint32(d.r.readx(4)))
+ case mpUint64:
+ ui = bigen.Uint64(d.r.readx(8))
+ case mpInt8:
+ if i := int64(int8(d.r.readn1())); i >= 0 {
+ ui = uint64(i)
+ } else {
+ d.d.errorf("Assigning negative signed value: %v, to unsigned type", i)
+ return
+ }
+ case mpInt16:
+ if i := int64(int16(bigen.Uint16(d.r.readx(2)))); i >= 0 {
+ ui = uint64(i)
+ } else {
+ d.d.errorf("Assigning negative signed value: %v, to unsigned type", i)
+ return
+ }
+ case mpInt32:
+ if i := int64(int32(bigen.Uint32(d.r.readx(4)))); i >= 0 {
+ ui = uint64(i)
+ } else {
+ d.d.errorf("Assigning negative signed value: %v, to unsigned type", i)
+ return
+ }
+ case mpInt64:
+ if i := int64(bigen.Uint64(d.r.readx(8))); i >= 0 {
+ ui = uint64(i)
+ } else {
+ d.d.errorf("Assigning negative signed value: %v, to unsigned type", i)
+ return
+ }
+ default:
+ switch {
+ case d.bd >= mpPosFixNumMin && d.bd <= mpPosFixNumMax:
+ ui = uint64(d.bd)
+ case d.bd >= mpNegFixNumMin && d.bd <= mpNegFixNumMax:
+ d.d.errorf("Assigning negative signed value: %v, to unsigned type", int(d.bd))
+ return
+ default:
+ d.d.errorf("Unhandled single-byte unsigned integer value: %s: %x", msgBadDesc, d.bd)
+ return
+ }
+ }
+ // check overflow (logic adapted from std pkg reflect/value.go OverflowUint()
+ if bitsize > 0 {
+ if trunc := (ui << (64 - bitsize)) >> (64 - bitsize); ui != trunc {
+ d.d.errorf("Overflow uint value: %v", ui)
+ return
+ }
+ }
+ d.bdRead = false
+ return
+}
+
+// float can either be decoded from msgpack type: float, double or intX
+func (d *msgpackDecDriver) DecodeFloat(chkOverflow32 bool) (f float64) {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ if d.bd == mpFloat {
+ f = float64(math.Float32frombits(bigen.Uint32(d.r.readx(4))))
+ } else if d.bd == mpDouble {
+ f = math.Float64frombits(bigen.Uint64(d.r.readx(8)))
+ } else {
+ f = float64(d.DecodeInt(0))
+ }
+ if chkOverflow32 && chkOvf.Float32(f) {
+ d.d.errorf("msgpack: float32 overflow: %v", f)
+ return
+ }
+ d.bdRead = false
+ return
+}
+
+// bool can be decoded from bool, fixnum 0 or 1.
+func (d *msgpackDecDriver) DecodeBool() (b bool) {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ if d.bd == mpFalse || d.bd == 0 {
+ // b = false
+ } else if d.bd == mpTrue || d.bd == 1 {
+ b = true
+ } else {
+ d.d.errorf("Invalid single-byte value for bool: %s: %x", msgBadDesc, d.bd)
+ return
+ }
+ d.bdRead = false
+ return
+}
+
+func (d *msgpackDecDriver) DecodeBytes(bs []byte, isstring, zerocopy bool) (bsOut []byte) {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ var clen int
+ // ignore isstring. Expect that the bytes may be found from msgpackContainerStr or msgpackContainerBin
+ if bd := d.bd; bd == mpBin8 || bd == mpBin16 || bd == mpBin32 {
+ clen = d.readContainerLen(msgpackContainerBin)
+ } else {
+ clen = d.readContainerLen(msgpackContainerStr)
+ }
+ // println("DecodeBytes: clen: ", clen)
+ d.bdRead = false
+ // bytes may be nil, so handle it. if nil, clen=-1.
+ if clen < 0 {
+ return nil
+ }
+ if zerocopy {
+ if d.br {
+ return d.r.readx(clen)
+ } else if len(bs) == 0 {
+ bs = d.b[:]
+ }
+ }
+ return decByteSlice(d.r, clen, bs)
+}
+
+func (d *msgpackDecDriver) DecodeString() (s string) {
+ return string(d.DecodeBytes(d.b[:], true, true))
+}
+
+func (d *msgpackDecDriver) readNextBd() {
+ d.bd = d.r.readn1()
+ d.bdRead = true
+}
+
+func (d *msgpackDecDriver) ContainerType() (vt valueType) {
+ bd := d.bd
+ if bd == mpNil {
+ return valueTypeNil
+ } else if bd == mpBin8 || bd == mpBin16 || bd == mpBin32 ||
+ (!d.h.RawToString &&
+ (bd == mpStr8 || bd == mpStr16 || bd == mpStr32 || (bd >= mpFixStrMin && bd <= mpFixStrMax))) {
+ return valueTypeBytes
+ } else if d.h.RawToString &&
+ (bd == mpStr8 || bd == mpStr16 || bd == mpStr32 || (bd >= mpFixStrMin && bd <= mpFixStrMax)) {
+ return valueTypeString
+ } else if bd == mpArray16 || bd == mpArray32 || (bd >= mpFixArrayMin && bd <= mpFixArrayMax) {
+ return valueTypeArray
+ } else if bd == mpMap16 || bd == mpMap32 || (bd >= mpFixMapMin && bd <= mpFixMapMax) {
+ return valueTypeMap
+ } else {
+ // d.d.errorf("isContainerType: unsupported parameter: %v", vt)
+ }
+ return valueTypeUnset
+}
+
+func (d *msgpackDecDriver) TryDecodeAsNil() (v bool) {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ if d.bd == mpNil {
+ d.bdRead = false
+ v = true
+ }
+ return
+}
+
+func (d *msgpackDecDriver) readContainerLen(ct msgpackContainerType) (clen int) {
+ bd := d.bd
+ if bd == mpNil {
+ clen = -1 // to represent nil
+ } else if bd == ct.b8 {
+ clen = int(d.r.readn1())
+ } else if bd == ct.b16 {
+ clen = int(bigen.Uint16(d.r.readx(2)))
+ } else if bd == ct.b32 {
+ clen = int(bigen.Uint32(d.r.readx(4)))
+ } else if (ct.bFixMin & bd) == ct.bFixMin {
+ clen = int(ct.bFixMin ^ bd)
+ } else {
+ d.d.errorf("readContainerLen: %s: hex: %x, decimal: %d", msgBadDesc, bd, bd)
+ return
+ }
+ d.bdRead = false
+ return
+}
+
+func (d *msgpackDecDriver) ReadMapStart() int {
+ return d.readContainerLen(msgpackContainerMap)
+}
+
+func (d *msgpackDecDriver) ReadArrayStart() int {
+ return d.readContainerLen(msgpackContainerList)
+}
+
+func (d *msgpackDecDriver) readExtLen() (clen int) {
+ switch d.bd {
+ case mpNil:
+ clen = -1 // to represent nil
+ case mpFixExt1:
+ clen = 1
+ case mpFixExt2:
+ clen = 2
+ case mpFixExt4:
+ clen = 4
+ case mpFixExt8:
+ clen = 8
+ case mpFixExt16:
+ clen = 16
+ case mpExt8:
+ clen = int(d.r.readn1())
+ case mpExt16:
+ clen = int(bigen.Uint16(d.r.readx(2)))
+ case mpExt32:
+ clen = int(bigen.Uint32(d.r.readx(4)))
+ default:
+ d.d.errorf("decoding ext bytes: found unexpected byte: %x", d.bd)
+ return
+ }
+ return
+}
+
+func (d *msgpackDecDriver) DecodeExt(rv interface{}, xtag uint64, ext Ext) (realxtag uint64) {
+ if xtag > 0xff {
+ d.d.errorf("decodeExt: tag must be <= 0xff; got: %v", xtag)
+ return
+ }
+ realxtag1, xbs := d.decodeExtV(ext != nil, uint8(xtag))
+ realxtag = uint64(realxtag1)
+ if ext == nil {
+ re := rv.(*RawExt)
+ re.Tag = realxtag
+ re.Data = detachZeroCopyBytes(d.br, re.Data, xbs)
+ } else {
+ ext.ReadExt(rv, xbs)
+ }
+ return
+}
+
+func (d *msgpackDecDriver) decodeExtV(verifyTag bool, tag byte) (xtag byte, xbs []byte) {
+ if !d.bdRead {
+ d.readNextBd()
+ }
+ xbd := d.bd
+ if xbd == mpBin8 || xbd == mpBin16 || xbd == mpBin32 {
+ xbs = d.DecodeBytes(nil, false, true)
+ } else if xbd == mpStr8 || xbd == mpStr16 || xbd == mpStr32 ||
+ (xbd >= mpFixStrMin && xbd <= mpFixStrMax) {
+ xbs = d.DecodeBytes(nil, true, true)
+ } else {
+ clen := d.readExtLen()
+ xtag = d.r.readn1()
+ if verifyTag && xtag != tag {
+ d.d.errorf("Wrong extension tag. Got %b. Expecting: %v", xtag, tag)
+ return
+ }
+ xbs = d.r.readx(clen)
+ }
+ d.bdRead = false
+ return
+}
+
+//--------------------------------------------------
+
+//MsgpackHandle is a Handle for the Msgpack Schema-Free Encoding Format.
+type MsgpackHandle struct {
+ BasicHandle
+
+ // RawToString controls how raw bytes are decoded into a nil interface{}.
+ RawToString bool
+
+ // WriteExt flag supports encoding configured extensions with extension tags.
+ // It also controls whether other elements of the new spec are encoded (ie Str8).
+ //
+ // With WriteExt=false, configured extensions are serialized as raw bytes
+ // and Str8 is not encoded.
+ //
+ // A stream can still be decoded into a typed value, provided an appropriate value
+ // is provided, but the type cannot be inferred from the stream. If no appropriate
+ // type is provided (e.g. decoding into a nil interface{}), you get back
+ // a []byte or string based on the setting of RawToString.
+ WriteExt bool
+ binaryEncodingType
+}
+
+func (h *MsgpackHandle) SetBytesExt(rt reflect.Type, tag uint64, ext BytesExt) (err error) {
+ return h.SetExt(rt, tag, &setExtWrapper{b: ext})
+}
+
+func (h *MsgpackHandle) newEncDriver(e *Encoder) encDriver {
+ return &msgpackEncDriver{e: e, w: e.w, h: h}
+}
+
+func (h *MsgpackHandle) newDecDriver(d *Decoder) decDriver {
+ return &msgpackDecDriver{d: d, r: d.r, h: h, br: d.bytes}
+}
+
+func (e *msgpackEncDriver) reset() {
+ e.w = e.e.w
+}
+
+func (d *msgpackDecDriver) reset() {
+ d.r = d.d.r
+ d.bd, d.bdRead = 0, false
+}
+
+//--------------------------------------------------
+
+type msgpackSpecRpcCodec struct {
+ rpcCodec
+}
+
+// /////////////// Spec RPC Codec ///////////////////
+func (c *msgpackSpecRpcCodec) WriteRequest(r *rpc.Request, body interface{}) error {
+ // WriteRequest can write to both a Go service, and other services that do
+ // not abide by the 1 argument rule of a Go service.
+ // We discriminate based on if the body is a MsgpackSpecRpcMultiArgs
+ var bodyArr []interface{}
+ if m, ok := body.(MsgpackSpecRpcMultiArgs); ok {
+ bodyArr = ([]interface{})(m)
+ } else {
+ bodyArr = []interface{}{body}
+ }
+ r2 := []interface{}{0, uint32(r.Seq), r.ServiceMethod, bodyArr}
+ return c.write(r2, nil, false, true)
+}
+
+func (c *msgpackSpecRpcCodec) WriteResponse(r *rpc.Response, body interface{}) error {
+ var moe interface{}
+ if r.Error != "" {
+ moe = r.Error
+ }
+ if moe != nil && body != nil {
+ body = nil
+ }
+ r2 := []interface{}{1, uint32(r.Seq), moe, body}
+ return c.write(r2, nil, false, true)
+}
+
+func (c *msgpackSpecRpcCodec) ReadResponseHeader(r *rpc.Response) error {
+ return c.parseCustomHeader(1, &r.Seq, &r.Error)
+}
+
+func (c *msgpackSpecRpcCodec) ReadRequestHeader(r *rpc.Request) error {
+ return c.parseCustomHeader(0, &r.Seq, &r.ServiceMethod)
+}
+
+func (c *msgpackSpecRpcCodec) ReadRequestBody(body interface{}) error {
+ if body == nil { // read and discard
+ return c.read(nil)
+ }
+ bodyArr := []interface{}{body}
+ return c.read(&bodyArr)
+}
+
+func (c *msgpackSpecRpcCodec) parseCustomHeader(expectTypeByte byte, msgid *uint64, methodOrError *string) (err error) {
+
+ if c.isClosed() {
+ return io.EOF
+ }
+
+ // We read the response header by hand
+ // so that the body can be decoded on its own from the stream at a later time.
+
+ const fia byte = 0x94 //four item array descriptor value
+ // Not sure why the panic of EOF is swallowed above.
+ // if bs1 := c.dec.r.readn1(); bs1 != fia {
+ // err = fmt.Errorf("Unexpected value for array descriptor: Expecting %v. Received %v", fia, bs1)
+ // return
+ // }
+ var b byte
+ b, err = c.br.ReadByte()
+ if err != nil {
+ return
+ }
+ if b != fia {
+ err = fmt.Errorf("Unexpected value for array descriptor: Expecting %v. Received %v", fia, b)
+ return
+ }
+
+ if err = c.read(&b); err != nil {
+ return
+ }
+ if b != expectTypeByte {
+ err = fmt.Errorf("Unexpected byte descriptor in header. Expecting %v. Received %v", expectTypeByte, b)
+ return
+ }
+ if err = c.read(msgid); err != nil {
+ return
+ }
+ if err = c.read(methodOrError); err != nil {
+ return
+ }
+ return
+}
+
+//--------------------------------------------------
+
+// msgpackSpecRpc is the implementation of Rpc that uses custom communication protocol
+// as defined in the msgpack spec at https://github.com/msgpack-rpc/msgpack-rpc/blob/master/spec.md
+type msgpackSpecRpc struct{}
+
+// MsgpackSpecRpc implements Rpc using the communication protocol defined in
+// the msgpack spec at https://github.com/msgpack-rpc/msgpack-rpc/blob/master/spec.md .
+// Its methods (ServerCodec and ClientCodec) return values that implement RpcCodecBuffered.
+var MsgpackSpecRpc msgpackSpecRpc
+
+func (x msgpackSpecRpc) ServerCodec(conn io.ReadWriteCloser, h Handle) rpc.ServerCodec {
+ return &msgpackSpecRpcCodec{newRPCCodec(conn, h)}
+}
+
+func (x msgpackSpecRpc) ClientCodec(conn io.ReadWriteCloser, h Handle) rpc.ClientCodec {
+ return &msgpackSpecRpcCodec{newRPCCodec(conn, h)}
+}
+
+var _ decDriver = (*msgpackDecDriver)(nil)
+var _ encDriver = (*msgpackEncDriver)(nil)