diff options
Diffstat (limited to 'kube2msb/src/vendor/github.com/ugorji/go/codec/cbor.go')
| -rw-r--r-- | kube2msb/src/vendor/github.com/ugorji/go/codec/cbor.go | 585 |
1 files changed, 0 insertions, 585 deletions
diff --git a/kube2msb/src/vendor/github.com/ugorji/go/codec/cbor.go b/kube2msb/src/vendor/github.com/ugorji/go/codec/cbor.go deleted file mode 100644 index a224cd3..0000000 --- a/kube2msb/src/vendor/github.com/ugorji/go/codec/cbor.go +++ /dev/null @@ -1,585 +0,0 @@ -// 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. - -package codec - -import ( - "math" - "reflect" -) - -const ( - cborMajorUint byte = iota - cborMajorNegInt - cborMajorBytes - cborMajorText - cborMajorArray - cborMajorMap - cborMajorTag - cborMajorOther -) - -const ( - cborBdFalse byte = 0xf4 + iota - cborBdTrue - cborBdNil - cborBdUndefined - cborBdExt - cborBdFloat16 - cborBdFloat32 - cborBdFloat64 -) - -const ( - cborBdIndefiniteBytes byte = 0x5f - cborBdIndefiniteString = 0x7f - cborBdIndefiniteArray = 0x9f - cborBdIndefiniteMap = 0xbf - cborBdBreak = 0xff -) - -const ( - CborStreamBytes byte = 0x5f - CborStreamString = 0x7f - CborStreamArray = 0x9f - CborStreamMap = 0xbf - CborStreamBreak = 0xff -) - -const ( - cborBaseUint byte = 0x00 - cborBaseNegInt = 0x20 - cborBaseBytes = 0x40 - cborBaseString = 0x60 - cborBaseArray = 0x80 - cborBaseMap = 0xa0 - cborBaseTag = 0xc0 - cborBaseSimple = 0xe0 -) - -// ------------------- - -type cborEncDriver struct { - noBuiltInTypes - encNoSeparator - e *Encoder - w encWriter - h *CborHandle - x [8]byte -} - -func (e *cborEncDriver) EncodeNil() { - e.w.writen1(cborBdNil) -} - -func (e *cborEncDriver) EncodeBool(b bool) { - if b { - e.w.writen1(cborBdTrue) - } else { - e.w.writen1(cborBdFalse) - } -} - -func (e *cborEncDriver) EncodeFloat32(f float32) { - e.w.writen1(cborBdFloat32) - bigenHelper{e.x[:4], e.w}.writeUint32(math.Float32bits(f)) -} - -func (e *cborEncDriver) EncodeFloat64(f float64) { - e.w.writen1(cborBdFloat64) - bigenHelper{e.x[:8], e.w}.writeUint64(math.Float64bits(f)) -} - -func (e *cborEncDriver) encUint(v uint64, bd byte) { - if v <= 0x17 { - e.w.writen1(byte(v) + bd) - } else if v <= math.MaxUint8 { - e.w.writen2(bd+0x18, uint8(v)) - } else if v <= math.MaxUint16 { - e.w.writen1(bd + 0x19) - bigenHelper{e.x[:2], e.w}.writeUint16(uint16(v)) - } else if v <= math.MaxUint32 { - e.w.writen1(bd + 0x1a) - bigenHelper{e.x[:4], e.w}.writeUint32(uint32(v)) - } else { // if v <= math.MaxUint64 { - e.w.writen1(bd + 0x1b) - bigenHelper{e.x[:8], e.w}.writeUint64(v) - } -} - -func (e *cborEncDriver) EncodeInt(v int64) { - if v < 0 { - e.encUint(uint64(-1-v), cborBaseNegInt) - } else { - e.encUint(uint64(v), cborBaseUint) - } -} - -func (e *cborEncDriver) EncodeUint(v uint64) { - e.encUint(v, cborBaseUint) -} - -func (e *cborEncDriver) encLen(bd byte, length int) { - e.encUint(uint64(length), bd) -} - -func (e *cborEncDriver) EncodeExt(rv interface{}, xtag uint64, ext Ext, en *Encoder) { - e.encUint(uint64(xtag), cborBaseTag) - if v := ext.ConvertExt(rv); v == nil { - e.EncodeNil() - } else { - en.encode(v) - } -} - -func (e *cborEncDriver) EncodeRawExt(re *RawExt, en *Encoder) { - e.encUint(uint64(re.Tag), cborBaseTag) - if re.Data != nil { - en.encode(re.Data) - } else if re.Value == nil { - e.EncodeNil() - } else { - en.encode(re.Value) - } -} - -func (e *cborEncDriver) EncodeArrayStart(length int) { - e.encLen(cborBaseArray, length) -} - -func (e *cborEncDriver) EncodeMapStart(length int) { - e.encLen(cborBaseMap, length) -} - -func (e *cborEncDriver) EncodeString(c charEncoding, v string) { - e.encLen(cborBaseString, len(v)) - e.w.writestr(v) -} - -func (e *cborEncDriver) EncodeSymbol(v string) { - e.EncodeString(c_UTF8, v) -} - -func (e *cborEncDriver) EncodeStringBytes(c charEncoding, v []byte) { - if c == c_RAW { - e.encLen(cborBaseBytes, len(v)) - } else { - e.encLen(cborBaseString, len(v)) - } - e.w.writeb(v) -} - -// ---------------------- - -type cborDecDriver struct { - d *Decoder - h *CborHandle - r decReader - b [scratchByteArrayLen]byte - br bool // bytes reader - bdRead bool - bd byte - noBuiltInTypes - decNoSeparator -} - -func (d *cborDecDriver) readNextBd() { - d.bd = d.r.readn1() - d.bdRead = true -} - -func (d *cborDecDriver) ContainerType() (vt valueType) { - if d.bd == cborBdNil { - return valueTypeNil - } else if d.bd == cborBdIndefiniteBytes || (d.bd >= cborBaseBytes && d.bd < cborBaseString) { - return valueTypeBytes - } else if d.bd == cborBdIndefiniteString || (d.bd >= cborBaseString && d.bd < cborBaseArray) { - return valueTypeString - } else if d.bd == cborBdIndefiniteArray || (d.bd >= cborBaseArray && d.bd < cborBaseMap) { - return valueTypeArray - } else if d.bd == cborBdIndefiniteMap || (d.bd >= cborBaseMap && d.bd < cborBaseTag) { - return valueTypeMap - } else { - // d.d.errorf("isContainerType: unsupported parameter: %v", vt) - } - return valueTypeUnset -} - -func (d *cborDecDriver) TryDecodeAsNil() bool { - if !d.bdRead { - d.readNextBd() - } - // treat Nil and Undefined as nil values - if d.bd == cborBdNil || d.bd == cborBdUndefined { - d.bdRead = false - return true - } - return false -} - -func (d *cborDecDriver) CheckBreak() bool { - if !d.bdRead { - d.readNextBd() - } - if d.bd == cborBdBreak { - d.bdRead = false - return true - } - return false -} - -func (d *cborDecDriver) decUint() (ui uint64) { - v := d.bd & 0x1f - if v <= 0x17 { - ui = uint64(v) - } else { - if v == 0x18 { - ui = uint64(d.r.readn1()) - } else if v == 0x19 { - ui = uint64(bigen.Uint16(d.r.readx(2))) - } else if v == 0x1a { - ui = uint64(bigen.Uint32(d.r.readx(4))) - } else if v == 0x1b { - ui = uint64(bigen.Uint64(d.r.readx(8))) - } else { - d.d.errorf("decUint: Invalid descriptor: %v", d.bd) - return - } - } - return -} - -func (d *cborDecDriver) decCheckInteger() (neg bool) { - if !d.bdRead { - d.readNextBd() - } - major := d.bd >> 5 - if major == cborMajorUint { - } else if major == cborMajorNegInt { - neg = true - } else { - d.d.errorf("invalid major: %v (bd: %v)", major, d.bd) - return - } - return -} - -func (d *cborDecDriver) DecodeInt(bitsize uint8) (i int64) { - neg := d.decCheckInteger() - ui := d.decUint() - // check if this number can be converted to an int without overflow - var overflow bool - if neg { - if i, overflow = chkOvf.SignedInt(ui + 1); overflow { - d.d.errorf("cbor: overflow converting %v to signed integer", ui+1) - return - } - i = -i - } else { - if i, overflow = chkOvf.SignedInt(ui); overflow { - d.d.errorf("cbor: overflow converting %v to signed integer", ui) - return - } - } - if chkOvf.Int(i, bitsize) { - d.d.errorf("cbor: overflow integer: %v", i) - return - } - d.bdRead = false - return -} - -func (d *cborDecDriver) DecodeUint(bitsize uint8) (ui uint64) { - if d.decCheckInteger() { - d.d.errorf("Assigning negative signed value to unsigned type") - return - } - ui = d.decUint() - if chkOvf.Uint(ui, bitsize) { - d.d.errorf("cbor: overflow integer: %v", ui) - return - } - d.bdRead = false - return -} - -func (d *cborDecDriver) DecodeFloat(chkOverflow32 bool) (f float64) { - if !d.bdRead { - d.readNextBd() - } - if bd := d.bd; bd == cborBdFloat16 { - f = float64(math.Float32frombits(halfFloatToFloatBits(bigen.Uint16(d.r.readx(2))))) - } else if bd == cborBdFloat32 { - f = float64(math.Float32frombits(bigen.Uint32(d.r.readx(4)))) - } else if bd == cborBdFloat64 { - f = math.Float64frombits(bigen.Uint64(d.r.readx(8))) - } else if bd >= cborBaseUint && bd < cborBaseBytes { - f = float64(d.DecodeInt(64)) - } else { - d.d.errorf("Float only valid from float16/32/64: Invalid descriptor: %v", bd) - return - } - if chkOverflow32 && chkOvf.Float32(f) { - d.d.errorf("cbor: float32 overflow: %v", f) - return - } - d.bdRead = false - return -} - -// bool can be decoded from bool only (single byte). -func (d *cborDecDriver) DecodeBool() (b bool) { - if !d.bdRead { - d.readNextBd() - } - if bd := d.bd; bd == cborBdTrue { - b = true - } else if bd == cborBdFalse { - } else { - d.d.errorf("Invalid single-byte value for bool: %s: %x", msgBadDesc, d.bd) - return - } - d.bdRead = false - return -} - -func (d *cborDecDriver) ReadMapStart() (length int) { - d.bdRead = false - if d.bd == cborBdIndefiniteMap { - return -1 - } - return d.decLen() -} - -func (d *cborDecDriver) ReadArrayStart() (length int) { - d.bdRead = false - if d.bd == cborBdIndefiniteArray { - return -1 - } - return d.decLen() -} - -func (d *cborDecDriver) decLen() int { - return int(d.decUint()) -} - -func (d *cborDecDriver) decAppendIndefiniteBytes(bs []byte) []byte { - d.bdRead = false - for { - if d.CheckBreak() { - break - } - if major := d.bd >> 5; major != cborMajorBytes && major != cborMajorText { - d.d.errorf("cbor: expect bytes or string major type in indefinite string/bytes; got: %v, byte: %v", major, d.bd) - return nil - } - n := d.decLen() - oldLen := len(bs) - newLen := oldLen + n - if newLen > cap(bs) { - bs2 := make([]byte, newLen, 2*cap(bs)+n) - copy(bs2, bs) - bs = bs2 - } else { - bs = bs[:newLen] - } - d.r.readb(bs[oldLen:newLen]) - // bs = append(bs, d.r.readn()...) - d.bdRead = false - } - d.bdRead = false - return bs -} - -func (d *cborDecDriver) DecodeBytes(bs []byte, isstring, zerocopy bool) (bsOut []byte) { - if !d.bdRead { - d.readNextBd() - } - if d.bd == cborBdNil || d.bd == cborBdUndefined { - d.bdRead = false - return nil - } - if d.bd == cborBdIndefiniteBytes || d.bd == cborBdIndefiniteString { - if bs == nil { - return d.decAppendIndefiniteBytes(nil) - } - return d.decAppendIndefiniteBytes(bs[:0]) - } - clen := d.decLen() - d.bdRead = false - 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 *cborDecDriver) DecodeString() (s string) { - return string(d.DecodeBytes(d.b[:], true, true)) -} - -func (d *cborDecDriver) DecodeExt(rv interface{}, xtag uint64, ext Ext) (realxtag uint64) { - if !d.bdRead { - d.readNextBd() - } - u := d.decUint() - d.bdRead = false - realxtag = u - if ext == nil { - re := rv.(*RawExt) - re.Tag = realxtag - d.d.decode(&re.Value) - } else if xtag != realxtag { - d.d.errorf("Wrong extension tag. Got %b. Expecting: %v", realxtag, xtag) - return - } else { - var v interface{} - d.d.decode(&v) - ext.UpdateExt(rv, v) - } - d.bdRead = false - return -} - -func (d *cborDecDriver) DecodeNaked() { - if !d.bdRead { - d.readNextBd() - } - - n := &d.d.n - var decodeFurther bool - - switch d.bd { - case cborBdNil: - n.v = valueTypeNil - case cborBdFalse: - n.v = valueTypeBool - n.b = false - case cborBdTrue: - n.v = valueTypeBool - n.b = true - case cborBdFloat16, cborBdFloat32: - n.v = valueTypeFloat - n.f = d.DecodeFloat(true) - case cborBdFloat64: - n.v = valueTypeFloat - n.f = d.DecodeFloat(false) - case cborBdIndefiniteBytes: - n.v = valueTypeBytes - n.l = d.DecodeBytes(nil, false, false) - case cborBdIndefiniteString: - n.v = valueTypeString - n.s = d.DecodeString() - case cborBdIndefiniteArray: - n.v = valueTypeArray - decodeFurther = true - case cborBdIndefiniteMap: - n.v = valueTypeMap - decodeFurther = true - default: - switch { - case d.bd >= cborBaseUint && d.bd < cborBaseNegInt: - if d.h.SignedInteger { - n.v = valueTypeInt - n.i = d.DecodeInt(64) - } else { - n.v = valueTypeUint - n.u = d.DecodeUint(64) - } - case d.bd >= cborBaseNegInt && d.bd < cborBaseBytes: - n.v = valueTypeInt - n.i = d.DecodeInt(64) - case d.bd >= cborBaseBytes && d.bd < cborBaseString: - n.v = valueTypeBytes - n.l = d.DecodeBytes(nil, false, false) - case d.bd >= cborBaseString && d.bd < cborBaseArray: - n.v = valueTypeString - n.s = d.DecodeString() - case d.bd >= cborBaseArray && d.bd < cborBaseMap: - n.v = valueTypeArray - decodeFurther = true - case d.bd >= cborBaseMap && d.bd < cborBaseTag: - n.v = valueTypeMap - decodeFurther = true - case d.bd >= cborBaseTag && d.bd < cborBaseSimple: - n.v = valueTypeExt - n.u = d.decUint() - n.l = nil - // d.bdRead = false - // d.d.decode(&re.Value) // handled by decode itself. - // decodeFurther = true - default: - d.d.errorf("decodeNaked: Unrecognized d.bd: 0x%x", d.bd) - return - } - } - - if !decodeFurther { - d.bdRead = false - } - return -} - -// ------------------------- - -// CborHandle is a Handle for the CBOR encoding format, -// defined at http://tools.ietf.org/html/rfc7049 and documented further at http://cbor.io . -// -// CBOR is comprehensively supported, including support for: -// - indefinite-length arrays/maps/bytes/strings -// - (extension) tags in range 0..0xffff (0 .. 65535) -// - half, single and double-precision floats -// - all numbers (1, 2, 4 and 8-byte signed and unsigned integers) -// - nil, true, false, ... -// - arrays and maps, bytes and text strings -// -// None of the optional extensions (with tags) defined in the spec are supported out-of-the-box. -// Users can implement them as needed (using SetExt), including spec-documented ones: -// - timestamp, BigNum, BigFloat, Decimals, Encoded Text (e.g. URL, regexp, base64, MIME Message), etc. -// -// To encode with indefinite lengths (streaming), users will use -// (Must)Encode methods of *Encoder, along with writing CborStreamXXX constants. -// -// For example, to encode "one-byte" as an indefinite length string: -// var buf bytes.Buffer -// e := NewEncoder(&buf, new(CborHandle)) -// buf.WriteByte(CborStreamString) -// e.MustEncode("one-") -// e.MustEncode("byte") -// buf.WriteByte(CborStreamBreak) -// encodedBytes := buf.Bytes() -// var vv interface{} -// NewDecoderBytes(buf.Bytes(), new(CborHandle)).MustDecode(&vv) -// // Now, vv contains the same string "one-byte" -// -type CborHandle struct { - binaryEncodingType - BasicHandle -} - -func (h *CborHandle) SetInterfaceExt(rt reflect.Type, tag uint64, ext InterfaceExt) (err error) { - return h.SetExt(rt, tag, &setExtWrapper{i: ext}) -} - -func (h *CborHandle) newEncDriver(e *Encoder) encDriver { - return &cborEncDriver{e: e, w: e.w, h: h} -} - -func (h *CborHandle) newDecDriver(d *Decoder) decDriver { - return &cborDecDriver{d: d, r: d.r, h: h, br: d.bytes} -} - -func (e *cborEncDriver) reset() { - e.w = e.e.w -} - -func (d *cborDecDriver) reset() { - d.r = d.d.r - d.bd, d.bdRead = 0, false -} - -var _ decDriver = (*cborDecDriver)(nil) -var _ encDriver = (*cborEncDriver)(nil) |