How to use New method of encoding Package

Best K6 code snippet using encoding.New

base32.go

Source:base32.go Github

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...21 decodeMap [256]byte22}23const encodeStd = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"24const encodeHex = "0123456789ABCDEFGHIJKLMNOPQRSTUV"25// NewEncoding returns a new Encoding defined by the given alphabet,26// which must be a 32-byte string.27func NewEncoding(encoder string) *Encoding {28 e := new(Encoding)29 e.encode = encoder30 for i := 0; i < len(e.decodeMap); i++ {31 e.decodeMap[i] = 0xFF32 }33 for i := 0; i < len(encoder); i++ {34 e.decodeMap[encoder[i]] = byte(i)35 }36 return e37}38// StdEncoding is the standard base32 encoding, as defined in39// RFC 4648.40var StdEncoding = NewEncoding(encodeStd)41// HexEncoding is the ``Extended Hex Alphabet'' defined in RFC 4648.42// It is typically used in DNS.43var HexEncoding = NewEncoding(encodeHex)44var removeNewlinesMapper = func(r rune) rune {45 if r == '\r' || r == '\n' {46 return -147 }48 return r49}50/*51 * Encoder52 */53// Encode encodes src using the encoding enc, writing54// EncodedLen(len(src)) bytes to dst.55//56// The encoding pads the output to a multiple of 8 bytes,57// so Encode is not appropriate for use on individual blocks58// of a large data stream. Use NewEncoder() instead.59func (enc *Encoding) Encode(dst, src []byte) {60 if len(src) == 0 {61 return62 }63 for len(src) > 0 {64 dst[0] = 065 dst[1] = 066 dst[2] = 067 dst[3] = 068 dst[4] = 069 dst[5] = 070 dst[6] = 071 dst[7] = 072 // Unpack 8x 5-bit source blocks into a 5 byte73 // destination quantum74 switch len(src) {75 default:76 dst[7] |= src[4] & 0x1F77 dst[6] |= src[4] >> 578 fallthrough79 case 4:80 dst[6] |= (src[3] << 3) & 0x1F81 dst[5] |= (src[3] >> 2) & 0x1F82 dst[4] |= src[3] >> 783 fallthrough84 case 3:85 dst[4] |= (src[2] << 1) & 0x1F86 dst[3] |= (src[2] >> 4) & 0x1F87 fallthrough88 case 2:89 dst[3] |= (src[1] << 4) & 0x1F90 dst[2] |= (src[1] >> 1) & 0x1F91 dst[1] |= (src[1] >> 6) & 0x1F92 fallthrough93 case 1:94 dst[1] |= (src[0] << 2) & 0x1F95 dst[0] |= src[0] >> 396 }97 // Encode 5-bit blocks using the base32 alphabet98 for j := 0; j < 8; j++ {99 dst[j] = enc.encode[dst[j]]100 }101 // Pad the final quantum102 if len(src) < 5 {103 dst[7] = '='104 if len(src) < 4 {105 dst[6] = '='106 dst[5] = '='107 if len(src) < 3 {108 dst[4] = '='109 if len(src) < 2 {110 dst[3] = '='111 dst[2] = '='112 }113 }114 }115 break116 }117 src = src[5:]118 dst = dst[8:]119 }120}121// EncodeToString returns the base32 encoding of src.122func (enc *Encoding) EncodeToString(src []byte) string {123 buf := make([]byte, enc.EncodedLen(len(src)))124 enc.Encode(buf, src)125 return string(buf)126}127type encoder struct {128 err error129 enc *Encoding130 w io.Writer131 buf [5]byte // buffered data waiting to be encoded132 nbuf int // number of bytes in buf133 out [1024]byte // output buffer134}135func (e *encoder) Write(p []byte) (n int, err error) {136 if e.err != nil {137 return 0, e.err138 }139 // Leading fringe.140 if e.nbuf > 0 {141 var i int142 for i = 0; i < len(p) && e.nbuf < 5; i++ {143 e.buf[e.nbuf] = p[i]144 e.nbuf++145 }146 n += i147 p = p[i:]148 if e.nbuf < 5 {149 return150 }151 e.enc.Encode(e.out[0:], e.buf[0:])152 if _, e.err = e.w.Write(e.out[0:8]); e.err != nil {153 return n, e.err154 }155 e.nbuf = 0156 }157 // Large interior chunks.158 for len(p) >= 5 {159 nn := len(e.out) / 8 * 5160 if nn > len(p) {161 nn = len(p)162 }163 nn -= nn % 5164 if nn > 0 {165 e.enc.Encode(e.out[0:], p[0:nn])166 if _, e.err = e.w.Write(e.out[0 : nn/5*8]); e.err != nil {167 return n, e.err168 }169 }170 n += nn171 p = p[nn:]172 }173 // Trailing fringe.174 for i := 0; i < len(p); i++ {175 e.buf[i] = p[i]176 }177 e.nbuf = len(p)178 n += len(p)179 return180}181// Close flushes any pending output from the encoder.182// It is an error to call Write after calling Close.183func (e *encoder) Close() error {184 // If there's anything left in the buffer, flush it out185 if e.err == nil && e.nbuf > 0 {186 e.enc.Encode(e.out[0:], e.buf[0:e.nbuf])187 e.nbuf = 0188 _, e.err = e.w.Write(e.out[0:8])189 }190 return e.err191}192// NewEncoder returns a new base32 stream encoder. Data written to193// the returned writer will be encoded using enc and then written to w.194// Base32 encodings operate in 5-byte blocks; when finished195// writing, the caller must Close the returned encoder to flush any196// partially written blocks.197func NewEncoder(enc *Encoding, w io.Writer) io.WriteCloser {198 return &encoder{enc: enc, w: w}199}200// EncodedLen returns the length in bytes of the base32 encoding201// of an input buffer of length n.202func (enc *Encoding) EncodedLen(n int) int { return (n + 4) / 5 * 8 }203/*204 * Decoder205 */206type CorruptInputError int64207func (e CorruptInputError) Error() string {208 return "illegal base32 data at input byte " + strconv.FormatInt(int64(e), 10)209}210// decode is like Decode but returns an additional 'end' value, which211// indicates if end-of-message padding was encountered and thus any212// additional data is an error. This method assumes that src has been213// stripped of all supported whitespace ('\r' and '\n').214func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err error) {215 olen := len(src)216 for len(src) > 0 && !end {217 // Decode quantum using the base32 alphabet218 var dbuf [8]byte219 dlen := 8220 for j := 0; j < 8; {221 if len(src) == 0 {222 return n, false, CorruptInputError(olen - len(src) - j)223 }224 in := src[0]225 src = src[1:]226 if in == '=' && j >= 2 && len(src) < 8 {227 // We've reached the end and there's padding228 if len(src)+j < 8-1 {229 // not enough padding230 return n, false, CorruptInputError(olen)231 }232 for k := 0; k < 8-1-j; k++ {233 if len(src) > k && src[k] != '=' {234 // incorrect padding235 return n, false, CorruptInputError(olen - len(src) + k - 1)236 }237 }238 dlen, end = j, true239 // 7, 5 and 2 are not valid padding lengths, and so 1, 3 and 6 are not240 // valid dlen values. See RFC 4648 Section 6 "Base 32 Encoding" listing241 // the five valid padding lengths, and Section 9 "Illustrations and242 // Examples" for an illustration for how the the 1st, 3rd and 6th base32243 // src bytes do not yield enough information to decode a dst byte.244 if dlen == 1 || dlen == 3 || dlen == 6 {245 return n, false, CorruptInputError(olen - len(src) - 1)246 }247 break248 }249 dbuf[j] = enc.decodeMap[in]250 if dbuf[j] == 0xFF {251 return n, false, CorruptInputError(olen - len(src) - 1)252 }253 j++254 }255 // Pack 8x 5-bit source blocks into 5 byte destination256 // quantum257 switch dlen {258 case 8:259 dst[4] = dbuf[6]<<5 | dbuf[7]260 fallthrough261 case 7:262 dst[3] = dbuf[4]<<7 | dbuf[5]<<2 | dbuf[6]>>3263 fallthrough264 case 5:265 dst[2] = dbuf[3]<<4 | dbuf[4]>>1266 fallthrough267 case 4:268 dst[1] = dbuf[1]<<6 | dbuf[2]<<1 | dbuf[3]>>4269 fallthrough270 case 2:271 dst[0] = dbuf[0]<<3 | dbuf[1]>>2272 }273 dst = dst[5:]274 switch dlen {275 case 2:276 n += 1277 case 4:278 n += 2279 case 5:280 n += 3281 case 7:282 n += 4283 case 8:284 n += 5285 }286 }287 return n, end, nil288}289// Decode decodes src using the encoding enc. It writes at most290// DecodedLen(len(src)) bytes to dst and returns the number of bytes291// written. If src contains invalid base32 data, it will return the292// number of bytes successfully written and CorruptInputError.293// New line characters (\r and \n) are ignored.294func (enc *Encoding) Decode(dst, src []byte) (n int, err error) {295 src = bytes.Map(removeNewlinesMapper, src)296 n, _, err = enc.decode(dst, src)297 return298}299// DecodeString returns the bytes represented by the base32 string s.300func (enc *Encoding) DecodeString(s string) ([]byte, error) {301 s = strings.Map(removeNewlinesMapper, s)302 dbuf := make([]byte, enc.DecodedLen(len(s)))303 n, err := enc.Decode(dbuf, []byte(s))304 return dbuf[:n], err305}306type decoder struct {307 err error308 enc *Encoding309 r io.Reader310 end bool // saw end of message311 buf [1024]byte // leftover input312 nbuf int313 out []byte // leftover decoded output314 outbuf [1024 / 8 * 5]byte315}316func (d *decoder) Read(p []byte) (n int, err error) {317 if d.err != nil {318 return 0, d.err319 }320 // Use leftover decoded output from last read.321 if len(d.out) > 0 {322 n = copy(p, d.out)323 d.out = d.out[n:]324 return n, nil325 }326 // Read a chunk.327 nn := len(p) / 5 * 8328 if nn < 8 {329 nn = 8330 }331 if nn > len(d.buf) {332 nn = len(d.buf)333 }334 nn, d.err = io.ReadAtLeast(d.r, d.buf[d.nbuf:nn], 8-d.nbuf)335 d.nbuf += nn336 if d.nbuf < 8 {337 return 0, d.err338 }339 // Decode chunk into p, or d.out and then p if p is too small.340 nr := d.nbuf / 8 * 8341 nw := d.nbuf / 8 * 5342 if nw > len(p) {343 nw, d.end, d.err = d.enc.decode(d.outbuf[0:], d.buf[0:nr])344 d.out = d.outbuf[0:nw]345 n = copy(p, d.out)346 d.out = d.out[n:]347 } else {348 n, d.end, d.err = d.enc.decode(p, d.buf[0:nr])349 }350 d.nbuf -= nr351 for i := 0; i < d.nbuf; i++ {352 d.buf[i] = d.buf[i+nr]353 }354 if d.err == nil {355 d.err = err356 }357 return n, d.err358}359type newlineFilteringReader struct {360 wrapped io.Reader361}362func (r *newlineFilteringReader) Read(p []byte) (int, error) {363 n, err := r.wrapped.Read(p)364 for n > 0 {365 offset := 0366 for i, b := range p[0:n] {367 if b != '\r' && b != '\n' {368 if i != offset {369 p[offset] = b370 }371 offset++372 }373 }374 if offset > 0 {375 return offset, err376 }377 // Previous buffer entirely whitespace, read again378 n, err = r.wrapped.Read(p)379 }380 return n, err381}382// NewDecoder constructs a new base32 stream decoder.383func NewDecoder(enc *Encoding, r io.Reader) io.Reader {384 return &decoder{enc: enc, r: &newlineFilteringReader{r}}385}386// DecodedLen returns the maximum length in bytes of the decoded data387// corresponding to n bytes of base32-encoded data.388func (enc *Encoding) DecodedLen(n int) int { return n / 8 * 5 }...

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base64.go

Source:base64.go Github

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...22 decodeMap [256]byte23}24const encodeStd = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"25const encodeURL = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"26// NewEncoding returns a new Encoding defined by the given alphabet,27// which must be a 64-byte string.28func NewEncoding(encoder string) *Encoding {29 e := new(Encoding)30 e.encode = encoder31 for i := 0; i < len(e.decodeMap); i++ {32 e.decodeMap[i] = 0xFF33 }34 for i := 0; i < len(encoder); i++ {35 e.decodeMap[encoder[i]] = byte(i)36 }37 return e38}39// StdEncoding is the standard base64 encoding, as defined in40// RFC 4648.41var StdEncoding = NewEncoding(encodeStd)42// URLEncoding is the alternate base64 encoding defined in RFC 4648.43// It is typically used in URLs and file names.44var URLEncoding = NewEncoding(encodeURL)45var removeNewlinesMapper = func(r rune) rune {46 if r == '\r' || r == '\n' {47 return -148 }49 return r50}51/*52 * Encoder53 */54// Encode encodes src using the encoding enc, writing55// EncodedLen(len(src)) bytes to dst.56//57// The encoding pads the output to a multiple of 4 bytes,58// so Encode is not appropriate for use on individual blocks59// of a large data stream. Use NewEncoder() instead.60func (enc *Encoding) Encode(dst, src []byte) {61 if len(src) == 0 {62 return63 }64 for len(src) > 0 {65 dst[0] = 066 dst[1] = 067 dst[2] = 068 dst[3] = 069 // Unpack 4x 6-bit source blocks into a 4 byte70 // destination quantum71 switch len(src) {72 default:73 dst[3] |= src[2] & 0x3F74 dst[2] |= src[2] >> 675 fallthrough76 case 2:77 dst[2] |= (src[1] << 2) & 0x3F78 dst[1] |= src[1] >> 479 fallthrough80 case 1:81 dst[1] |= (src[0] << 4) & 0x3F82 dst[0] |= src[0] >> 283 }84 // Encode 6-bit blocks using the base64 alphabet85 for j := 0; j < 4; j++ {86 dst[j] = enc.encode[dst[j]]87 }88 // Pad the final quantum89 if len(src) < 3 {90 dst[3] = '='91 if len(src) < 2 {92 dst[2] = '='93 }94 break95 }96 src = src[3:]97 dst = dst[4:]98 }99}100// EncodeToString returns the base64 encoding of src.101func (enc *Encoding) EncodeToString(src []byte) string {102 buf := make([]byte, enc.EncodedLen(len(src)))103 enc.Encode(buf, src)104 return string(buf)105}106type encoder struct {107 err error108 enc *Encoding109 w io.Writer110 buf [3]byte // buffered data waiting to be encoded111 nbuf int // number of bytes in buf112 out [1024]byte // output buffer113}114func (e *encoder) Write(p []byte) (n int, err error) {115 if e.err != nil {116 return 0, e.err117 }118 // Leading fringe.119 if e.nbuf > 0 {120 var i int121 for i = 0; i < len(p) && e.nbuf < 3; i++ {122 e.buf[e.nbuf] = p[i]123 e.nbuf++124 }125 n += i126 p = p[i:]127 if e.nbuf < 3 {128 return129 }130 e.enc.Encode(e.out[0:], e.buf[0:])131 if _, e.err = e.w.Write(e.out[0:4]); e.err != nil {132 return n, e.err133 }134 e.nbuf = 0135 }136 // Large interior chunks.137 for len(p) >= 3 {138 nn := len(e.out) / 4 * 3139 if nn > len(p) {140 nn = len(p)141 }142 nn -= nn % 3143 if nn > 0 {144 e.enc.Encode(e.out[0:], p[0:nn])145 if _, e.err = e.w.Write(e.out[0 : nn/3*4]); e.err != nil {146 return n, e.err147 }148 }149 n += nn150 p = p[nn:]151 }152 // Trailing fringe.153 for i := 0; i < len(p); i++ {154 e.buf[i] = p[i]155 }156 e.nbuf = len(p)157 n += len(p)158 return159}160// Close flushes any pending output from the encoder.161// It is an error to call Write after calling Close.162func (e *encoder) Close() error {163 // If there's anything left in the buffer, flush it out164 if e.err == nil && e.nbuf > 0 {165 e.enc.Encode(e.out[0:], e.buf[0:e.nbuf])166 e.nbuf = 0167 _, e.err = e.w.Write(e.out[0:4])168 }169 return e.err170}171// NewEncoder returns a new base64 stream encoder. Data written to172// the returned writer will be encoded using enc and then written to w.173// Base64 encodings operate in 4-byte blocks; when finished174// writing, the caller must Close the returned encoder to flush any175// partially written blocks.176func NewEncoder(enc *Encoding, w io.Writer) io.WriteCloser {177 return &encoder{enc: enc, w: w}178}179// EncodedLen returns the length in bytes of the base64 encoding180// of an input buffer of length n.181func (enc *Encoding) EncodedLen(n int) int { return (n + 2) / 3 * 4 }182/*183 * Decoder184 */185type CorruptInputError int64186func (e CorruptInputError) Error() string {187 return "illegal base64 data at input byte " + strconv.FormatInt(int64(e), 10)188}189// decode is like Decode but returns an additional 'end' value, which190// indicates if end-of-message padding was encountered and thus any191// additional data is an error. This method assumes that src has been192// stripped of all supported whitespace ('\r' and '\n').193func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err error) {194 olen := len(src)195 for len(src) > 0 && !end {196 // Decode quantum using the base64 alphabet197 var dbuf [4]byte198 dlen := 4199 for j := 0; j < 4; {200 if len(src) == 0 {201 return n, false, CorruptInputError(olen - len(src) - j)202 }203 in := src[0]204 src = src[1:]205 if in == '=' && j >= 2 && len(src) < 4 {206 // We've reached the end and there's padding207 if len(src)+j < 4-1 {208 // not enough padding209 return n, false, CorruptInputError(olen)210 }211 if len(src) > 0 && src[0] != '=' {212 // incorrect padding213 return n, false, CorruptInputError(olen - len(src) - 1)214 }215 dlen, end = j, true216 break217 }218 dbuf[j] = enc.decodeMap[in]219 if dbuf[j] == 0xFF {220 return n, false, CorruptInputError(olen - len(src) - 1)221 }222 j++223 }224 // Pack 4x 6-bit source blocks into 3 byte destination225 // quantum226 switch dlen {227 case 4:228 dst[2] = dbuf[2]<<6 | dbuf[3]229 fallthrough230 case 3:231 dst[1] = dbuf[1]<<4 | dbuf[2]>>2232 fallthrough233 case 2:234 dst[0] = dbuf[0]<<2 | dbuf[1]>>4235 }236 dst = dst[3:]237 n += dlen - 1238 }239 return n, end, nil240}241// Decode decodes src using the encoding enc. It writes at most242// DecodedLen(len(src)) bytes to dst and returns the number of bytes243// written. If src contains invalid base64 data, it will return the244// number of bytes successfully written and CorruptInputError.245// New line characters (\r and \n) are ignored.246func (enc *Encoding) Decode(dst, src []byte) (n int, err error) {247 src = bytes.Map(removeNewlinesMapper, src)248 n, _, err = enc.decode(dst, src)249 return250}251// DecodeString returns the bytes represented by the base64 string s.252func (enc *Encoding) DecodeString(s string) ([]byte, error) {253 s = strings.Map(removeNewlinesMapper, s)254 dbuf := make([]byte, enc.DecodedLen(len(s)))255 n, err := enc.Decode(dbuf, []byte(s))256 return dbuf[:n], err257}258type decoder struct {259 err error260 enc *Encoding261 r io.Reader262 end bool // saw end of message263 buf [1024]byte // leftover input264 nbuf int265 out []byte // leftover decoded output266 outbuf [1024 / 4 * 3]byte267}268func (d *decoder) Read(p []byte) (n int, err error) {269 if d.err != nil {270 return 0, d.err271 }272 // Use leftover decoded output from last read.273 if len(d.out) > 0 {274 n = copy(p, d.out)275 d.out = d.out[n:]276 return n, nil277 }278 // Read a chunk.279 nn := len(p) / 3 * 4280 if nn < 4 {281 nn = 4282 }283 if nn > len(d.buf) {284 nn = len(d.buf)285 }286 nn, d.err = io.ReadAtLeast(d.r, d.buf[d.nbuf:nn], 4-d.nbuf)287 d.nbuf += nn288 if d.err != nil || d.nbuf < 4 {289 return 0, d.err290 }291 // Decode chunk into p, or d.out and then p if p is too small.292 nr := d.nbuf / 4 * 4293 nw := d.nbuf / 4 * 3294 if nw > len(p) {295 nw, d.end, d.err = d.enc.decode(d.outbuf[0:], d.buf[0:nr])296 d.out = d.outbuf[0:nw]297 n = copy(p, d.out)298 d.out = d.out[n:]299 } else {300 n, d.end, d.err = d.enc.decode(p, d.buf[0:nr])301 }302 d.nbuf -= nr303 for i := 0; i < d.nbuf; i++ {304 d.buf[i] = d.buf[i+nr]305 }306 if d.err == nil {307 d.err = err308 }309 return n, d.err310}311type newlineFilteringReader struct {312 wrapped io.Reader313}314func (r *newlineFilteringReader) Read(p []byte) (int, error) {315 n, err := r.wrapped.Read(p)316 for n > 0 {317 offset := 0318 for i, b := range p[0:n] {319 if b != '\r' && b != '\n' {320 if i != offset {321 p[offset] = b322 }323 offset++324 }325 }326 if offset > 0 {327 return offset, err328 }329 // Previous buffer entirely whitespace, read again330 n, err = r.wrapped.Read(p)331 }332 return n, err333}334// NewDecoder constructs a new base64 stream decoder.335func NewDecoder(enc *Encoding, r io.Reader) io.Reader {336 return &decoder{enc: enc, r: &newlineFilteringReader{r}}337}338// DecodedLen returns the maximum length in bytes of the decoded data339// corresponding to n bytes of base64-encoded data.340func (enc *Encoding) DecodedLen(n int) int { return n / 4 * 3 }...

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encoders.go

Source:encoders.go Github

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...10type compressEncoding struct{}11type gzipEncoding struct{}12type deflateEncoding struct{}13type chunkedEncoding struct{}14func NewIdentityEncoder() EncodingHandler {15 return new(identityEncoding)16}17func (p *identityEncoding) Encoding() string {18 return ENCODING_IDENTITY19}20func (p *identityEncoding) Encoder(req Request, cxt Context, writer io.Writer) io.Writer {21 return writer22}23func (p *identityEncoding) Decoder(req Request, cxt Context, reader io.Reader) io.Reader {24 return reader25}26func (p *identityEncoding) String() string {27 return ENCODING_IDENTITY28}29func NewCompressEncoder() EncodingHandler {30 return new(compressEncoding)31}32func (p *compressEncoding) Encoding() string {33 return ENCODING_COMPRESS34}35func (p *compressEncoding) Encoder(req Request, cxt Context, writer io.Writer) io.Writer {36 return lzw.NewWriter(writer, lzw.LSB, 8)37}38func (p *compressEncoding) Decoder(req Request, cxt Context, reader io.Reader) io.Reader {39 return lzw.NewReader(reader, lzw.LSB, 8)40}41func (p *compressEncoding) String() string {42 return ENCODING_COMPRESS43}44func NewGZipEncoder() EncodingHandler {45 return new(gzipEncoding)46}47func (p *gzipEncoding) Encoding() string {48 return ENCODING_GZIP49}50func (p *gzipEncoding) Encoder(req Request, cxt Context, writer io.Writer) io.Writer {51 w := gzip.NewWriter(writer)52 return w53}54func (p *gzipEncoding) Decoder(req Request, cxt Context, reader io.Reader) io.Reader {55 r, _ := gzip.NewReader(reader)56 return r57}58func (p *gzipEncoding) String() string {59 return ENCODING_GZIP60}61func NewDeflateEncoder() EncodingHandler {62 return new(deflateEncoding)63}64func (p *deflateEncoding) Encoding() string {65 return ENCODING_DEFLATE66}67func (p *deflateEncoding) Encoder(req Request, cxt Context, writer io.Writer) io.Writer {68 w, _ := flate.NewWriter(writer, flate.DefaultCompression)69 return w70}71func (p *deflateEncoding) Decoder(req Request, cxt Context, reader io.Reader) io.Reader {72 return flate.NewReader(reader)73}74func (p *deflateEncoding) String() string {75 return ENCODING_DEFLATE76}77func NewChunkedEncoder() EncodingHandler {78 return new(chunkedEncoding)79}80func (p *chunkedEncoding) Encoding() string {81 return ENCODING_CHUNKED82}83func (p *chunkedEncoding) Encoder(req Request, cxt Context, writer io.Writer) io.Writer {84 return httputil.NewChunkedWriter(writer)85}86func (p *chunkedEncoding) Decoder(req Request, cxt Context, reader io.Reader) io.Reader {87 return flate.NewReader(reader)88}89func (p *chunkedEncoding) String() string {90 return ENCODING_CHUNKED91}...

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1import (2func main() {3 var jsonBlob = []byte(`[4 {"Name": "Platypus", "Order": "Monotremata"},5 {"Name": "Quoll", "Order": "Dasyuromorphia"}6 type Animal struct {7 }8 err := json.Unmarshal(jsonBlob, &animals)9 if err != nil {10 fmt.Println("error:", err)11 }12 fmt.Printf("%+v", animals)13}14[{{Name:Platypus Order:Monotremata} {Name:Quoll Order:Dasyuromorphia}}]15func Marshal(v interface{}) ([]byte, error)16import (17func main() {18 type Animal struct {19 }20 animals := []Animal{21 {"Platypus", "Monotremata"},22 {"Quoll", "Dasyuromorphia"},23 }24 jsonBlob, err := json.Marshal(animals)25 if err != nil {26 fmt.Println("error:", err)27 }28 fmt.Printf("%s29}30[{"Name":"Platypus","Order":"Monotremata"},{"Name":"Quoll","Order":"

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1import (2type Person struct {3}4func main() {5 p1 := Person{"James", "Bond", 20}6 p2 := Person{"Miss", "Moneypenny", 19}7 people := []Person{p1, p2}8 fmt.Println(people)9 err := json.NewEncoder(os.Stdout).Encode(people)10 if err != nil {11 log.Println("error:", err)12 }13}14import (15type Person struct {16}17func main() {18 p1 := Person{"James", "Bond", 20}19 p2 := Person{"Miss", "Moneypenny", 19}20 people := []Person{p1, p2}21 fmt.Println(people)

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1import (2type Person struct {3}4func main() {5 p := Person{Name: "Rajesh", Age: 23}6 enc := json.NewEncoder(os.Stdout)7 enc.Encode(p)8 fmt.Println(p)9}10{"Name":"Rajesh","Age":23}11{Rajesh 23}12import (13type Person struct {14}15func main() {16 p := Person{Name: "Rajesh", Age: 23}17 enc := json.NewEncoder(os.Stdout)18 enc.Encode(p)19 fmt.Println(p)20}21{"Name":"Rajesh","Age":23}22{Rajesh 23}23import (24type Person struct {25}26func main() {27 p := Person{Name: "Rajesh", Age: 23}28 json, err := json.MarshalIndent(p, "", " ")29 if err != nil {30 fmt.Println(err)31 }32 fmt.Println(string(json))33}34{35}

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1import (2func main() {3 m := map[string]int{4 }5 s := []string{"a", "b"}6 type T struct {7 }8 t := T{23, "skidoo"}9 mb, _ := json.Marshal(m)10 sb, _ := json.Marshal(s)11 tb, _ := json.Marshal(t)12 pb, _ := json.Marshal(p)13 fmt.Printf("map:%s14 fmt.Printf("slice:%s15 fmt.Printf("struct:%s16 fmt.Printf("pointer:%s17}18map:{"key1":10,"key2":20}19struct:{"A":23,"B":"skidoo"}20pointer:{"A":23,"B":"skidoo"}21import (22func main() {23 m := map[string]int{24 }25 s := []string{"a", "b"}26 type T struct {27 }28 t := T{23, "skidoo"}

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1import (2func main() {3 var s = `{"name":"John", "age":30, "city":"New York"}`4 var result map[string]interface{}5 json.NewDecoder(strings.NewReader(s)).Decode(&result)6 fmt.Println(result)7}8import (9func main() {10 var s = `{"name":"John", "age":30, "city":"New York"}`11 var result map[string]interface{}12 json.Unmarshal([]byte(s), &result)13 fmt.Println(result)14}15import (16func main() {17 var data = map[string]interface{}{18 }19 var result, _ = json.Marshal(data)20 fmt.Println(string(result))21}22{"name":"John","age":30,"city":"New York"}23import (24func main() {25 var data = map[string]interface{}{26 }27 var result = bytes.NewBufferString("")28 json.NewEncoder(result).Encode(data)29 fmt.Println(result)30}31{"name":"John","age":

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1import (2func main() {3 encodedString := base64.NewEncoding("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/").EncodeToString([]byte("Golang"))4 fmt.Println(encodedString)5}6import (7func main() {8 encodedString := base64.RawStdEncoding.EncodeToString([]byte("Golang"))9 fmt.Println(encodedString)10}11import (12func main() {13 encodedString := base64.RawURLEncoding.EncodeToString([]byte("Golang"))14 fmt.Println(encodedString)15}16import (17func main() {18 encodedString := base64.StdEncoding.EncodeToString([]byte("Golang"))19 fmt.Println(encodedString)20}

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1import (2func main() {3 enc := json.NewEncoder(os.Stdout)4 err := enc.Encode(map[string]int{"apple": 5, "lettuce": 7})5 if err != nil {6 log.Println("Error in encoding:", err)7 }8}9{"apple":5,"lettuce":7}10Example 2: Encode() method of encoding/json class11import (12func main() {13 err := json.NewEncoder(os.Stdout).Encode(map[string]int{"apple": 5, "lettuce": 7})14 if err != nil {15 log.Println("Error in encoding:", err)16 }17}18{"apple":5,"lettuce":7}19Example 3: Marshal() method of encoding/json class20import (21func main() {22 b, err := json.Marshal(map[string]int{"apple": 5, "lettuce": 7})23 if err != nil {24 log.Println("Error in encoding:", err)25 }26 fmt.Println(string(b))27}28{"apple":5,"lettuce":7}29Example 4: MarshalIndent() method of encoding/json class30import (31func main() {32 b, err := json.MarshalIndent(map[string]int{"apple": 5, "lettuce": 7}, "", " ")33 if err != nil {34 log.Println("Error in encoding:", err)35 }36 fmt.Println(string(b))37}38{39}40Example 5: Encoder.Encode() method of encoding/json class41import (42func main() {43 enc := json.NewEncoder(os.Stdout)

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1func main() {2 e := json.NewEncoder(os.Stdout)3 if err := e.Encode(map[string]int{"apple": 5, "lettuce": 7}); err != nil {4 fmt.Println("error:", err)5 }6}7func main() {8 fruits := []string{"apple", "banana", "grape"}9 e := json.NewEncoder(os.Stdout)10 if err := e.Encode(fruits); err != nil {11 fmt.Println("error:", err)12 }13}14func main() {15 fruits := []string{"apple", "banana", "grape"}16 e := json.NewEncoder(os.Stdout)17 if err := e.Encode(fruits); err != nil {18 fmt.Println("error:", err)19 }20}21func main() {22 fruits := []string{"apple", "banana", "grape"}23 e := json.NewEncoder(os.Stdout)24 if err := e.Encode(fruits); err != nil {25 fmt.Println("error:", err)26 }27}28func main() {29 fruits := []string{"apple", "banana", "grape"}

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