[VOL-4293] OpenONU Adapter update for gRPC migration
Change-Id: I05300d3b95b878f44576a99a05f53f52fdc0cda1
diff --git a/vendor/github.com/klauspost/compress/zstd/zstd.go b/vendor/github.com/klauspost/compress/zstd/zstd.go
new file mode 100644
index 0000000..1ba308c
--- /dev/null
+++ b/vendor/github.com/klauspost/compress/zstd/zstd.go
@@ -0,0 +1,146 @@
+// Package zstd provides decompression of zstandard files.
+//
+// For advanced usage and examples, go to the README: https://github.com/klauspost/compress/tree/master/zstd#zstd
+package zstd
+
+import (
+ "bytes"
+ "encoding/binary"
+ "errors"
+ "log"
+ "math"
+ "math/bits"
+)
+
+// enable debug printing
+const debug = false
+
+// Enable extra assertions.
+const debugAsserts = debug || false
+
+// print sequence details
+const debugSequences = false
+
+// print detailed matching information
+const debugMatches = false
+
+// force encoder to use predefined tables.
+const forcePreDef = false
+
+// zstdMinMatch is the minimum zstd match length.
+const zstdMinMatch = 3
+
+// Reset the buffer offset when reaching this.
+const bufferReset = math.MaxInt32 - MaxWindowSize
+
+var (
+ // ErrReservedBlockType is returned when a reserved block type is found.
+ // Typically this indicates wrong or corrupted input.
+ ErrReservedBlockType = errors.New("invalid input: reserved block type encountered")
+
+ // ErrCompressedSizeTooBig is returned when a block is bigger than allowed.
+ // Typically this indicates wrong or corrupted input.
+ ErrCompressedSizeTooBig = errors.New("invalid input: compressed size too big")
+
+ // ErrBlockTooSmall is returned when a block is too small to be decoded.
+ // Typically returned on invalid input.
+ ErrBlockTooSmall = errors.New("block too small")
+
+ // ErrMagicMismatch is returned when a "magic" number isn't what is expected.
+ // Typically this indicates wrong or corrupted input.
+ ErrMagicMismatch = errors.New("invalid input: magic number mismatch")
+
+ // ErrWindowSizeExceeded is returned when a reference exceeds the valid window size.
+ // Typically this indicates wrong or corrupted input.
+ ErrWindowSizeExceeded = errors.New("window size exceeded")
+
+ // ErrWindowSizeTooSmall is returned when no window size is specified.
+ // Typically this indicates wrong or corrupted input.
+ ErrWindowSizeTooSmall = errors.New("invalid input: window size was too small")
+
+ // ErrDecoderSizeExceeded is returned if decompressed size exceeds the configured limit.
+ ErrDecoderSizeExceeded = errors.New("decompressed size exceeds configured limit")
+
+ // ErrUnknownDictionary is returned if the dictionary ID is unknown.
+ // For the time being dictionaries are not supported.
+ ErrUnknownDictionary = errors.New("unknown dictionary")
+
+ // ErrFrameSizeExceeded is returned if the stated frame size is exceeded.
+ // This is only returned if SingleSegment is specified on the frame.
+ ErrFrameSizeExceeded = errors.New("frame size exceeded")
+
+ // ErrCRCMismatch is returned if CRC mismatches.
+ ErrCRCMismatch = errors.New("CRC check failed")
+
+ // ErrDecoderClosed will be returned if the Decoder was used after
+ // Close has been called.
+ ErrDecoderClosed = errors.New("decoder used after Close")
+
+ // ErrDecoderNilInput is returned when a nil Reader was provided
+ // and an operation other than Reset/DecodeAll/Close was attempted.
+ ErrDecoderNilInput = errors.New("nil input provided as reader")
+)
+
+func println(a ...interface{}) {
+ if debug {
+ log.Println(a...)
+ }
+}
+
+func printf(format string, a ...interface{}) {
+ if debug {
+ log.Printf(format, a...)
+ }
+}
+
+// matchLenFast does matching, but will not match the last up to 7 bytes.
+func matchLenFast(a, b []byte) int {
+ endI := len(a) & (math.MaxInt32 - 7)
+ for i := 0; i < endI; i += 8 {
+ if diff := load64(a, i) ^ load64(b, i); diff != 0 {
+ return i + bits.TrailingZeros64(diff)>>3
+ }
+ }
+ return endI
+}
+
+// matchLen returns the maximum length.
+// a must be the shortest of the two.
+// The function also returns whether all bytes matched.
+func matchLen(a, b []byte) int {
+ b = b[:len(a)]
+ for i := 0; i < len(a)-7; i += 8 {
+ if diff := load64(a, i) ^ load64(b, i); diff != 0 {
+ return i + (bits.TrailingZeros64(diff) >> 3)
+ }
+ }
+
+ checked := (len(a) >> 3) << 3
+ a = a[checked:]
+ b = b[checked:]
+ for i := range a {
+ if a[i] != b[i] {
+ return i + checked
+ }
+ }
+ return len(a) + checked
+}
+
+func load3232(b []byte, i int32) uint32 {
+ return binary.LittleEndian.Uint32(b[i:])
+}
+
+func load6432(b []byte, i int32) uint64 {
+ return binary.LittleEndian.Uint64(b[i:])
+}
+
+func load64(b []byte, i int) uint64 {
+ return binary.LittleEndian.Uint64(b[i:])
+}
+
+type byter interface {
+ Bytes() []byte
+ Len() int
+}
+
+var _ byter = &bytes.Buffer{}