Курнат Андрей
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
package xxh3
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import (
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"hash"
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)
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// Hasher128 implements the hash.Hash interface.
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// It will return hashes that are 128 bits.
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type Hasher128 struct {
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h Hasher
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}
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var (
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_ hash.Hash = (*Hasher128)(nil)
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)
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// New128 returns a new 128 bit Hasher that implements the hash.Hash interface.
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func New128() *Hasher128 {
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return &Hasher128{}
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}
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// NewSeed128 returns a new Hasher128 that implements the hash.Hash interface.
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func NewSeed128(seed uint64) *Hasher128 {
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var h Hasher128
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h.ResetSeed(seed)
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return &h
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}
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// Reset resets the Hash to its initial state.
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func (h *Hasher128) Reset() {
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h.h.Reset()
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}
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// ResetSeed will reset the hash and set a new seed.
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// This will change the original state used by Reset.
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func (h *Hasher128) ResetSeed(seed uint64) {
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h.h.ResetSeed(seed)
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}
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// BlockSize returns the hash's underlying block size.
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// The Write method will accept any amount of data, but
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// it may operate more efficiently if all writes are a
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// multiple of the block size.
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func (h *Hasher128) BlockSize() int { return _stripe }
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// Size returns the number of bytes Sum will return.
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func (h *Hasher128) Size() int { return 16 }
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// Sum appends the current hash to b and returns the resulting slice.
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// It does not change the underlying hash state.
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func (h *Hasher128) Sum(b []byte) []byte {
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sum := h.h.Sum128().Bytes()
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return append(b, sum[:]...)
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}
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// Write adds more data to the running hash.
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// It never returns an error.
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func (h *Hasher128) Write(buf []byte) (int, error) {
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h.h.update(buf)
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return len(buf), nil
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}
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// WriteString adds more data to the running hash.
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// It never returns an error.
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func (h *Hasher128) WriteString(buf string) (int, error) {
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h.h.updateString(buf)
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return len(buf), nil
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}
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// Sum128 returns the 128-bit hash of the written data.
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func (h *Hasher128) Sum128() Uint128 {
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return h.h.Sum128()
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}
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