33 lines
753 B
Go
33 lines
753 B
Go
// Code extracted from vendor/github.com/ethereum/go-ethereum/common/hexutil/hexutil.go
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package protocol
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import (
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"encoding/hex"
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"reflect"
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)
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var (
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bytesT = reflect.TypeOf(HexBytes(nil))
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)
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// HexBytes marshals/unmarshals as a JSON string with 0x prefix.
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// The empty slice marshals as "0x".
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type HexBytes []byte
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// MarshalText implements encoding.TextMarshaler
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func (b HexBytes) MarshalText() ([]byte, error) {
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result := make([]byte, len(b)*2+2)
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copy(result, `0x`)
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hex.Encode(result[2:], b)
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return result, nil
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}
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// UnmarshalJSON implements json.Unmarshaler.
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func (b *HexBytes) UnmarshalJSON(input []byte) error {
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if !isString(input) {
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return errNonString(bytesT)
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}
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return wrapTypeError(b.UnmarshalText(input[1:len(input)-1]), bytesT)
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}
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