mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2025-01-07 11:32:20 +00:00
77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
/*
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Copyright 2022 Erigon-Lightclient contributors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package utils
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import (
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"encoding/binary"
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ssz "github.com/ferranbt/fastssz"
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"github.com/golang/snappy"
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)
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func Uint32ToBytes4(n uint32) (ret [4]byte) {
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binary.BigEndian.PutUint32(ret[:], n)
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return
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}
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func BytesToBytes4(b []byte) (ret [4]byte) {
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copy(ret[:], b)
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return
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}
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func Uint64ToLE(i uint64) []byte {
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buf := make([]byte, 8)
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binary.LittleEndian.PutUint64(buf, i)
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return buf
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}
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func DecompressSnappy(data []byte) ([]byte, error) {
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// Decode the snappy
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lenDecoded, err := snappy.DecodedLen(data)
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if err != nil {
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return nil, err
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}
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decodedData := make([]byte, lenDecoded)
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return snappy.Decode(decodedData, data)
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}
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func CompressSnappy(data []byte) []byte {
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return snappy.Encode(nil, data)
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}
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func EncodeSSZSnappy(data ssz.Marshaler) ([]byte, error) {
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enc := make([]byte, data.SizeSSZ())
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enc, err := data.MarshalSSZTo(enc[:0])
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if err != nil {
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return nil, err
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}
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return snappy.Encode(nil, enc), nil
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}
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func DecodeSSZSnappy(dst ssz.Unmarshaler, src []byte) error {
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dec, err := snappy.Decode(nil, src)
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if err != nil {
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return err
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}
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err = dst.UnmarshalSSZ(dec)
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if err != nil {
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return err
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}
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return nil
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}
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