Roy Crihfield
ebc2eb37e7
* refactor packages, flags, subscriptions * DRY refactor builder tests * use mockgen to generate mocks * update README * MODE=statediff no longer needed for unit tests * simplify func names, clean up metrics * move write params to service field * sql indexer: confirm quit after ipld cache reset prevents negative waitgroup panic * don't let TotalDifficulty become nil * use forked plugeth, plugeth-utils for now
27 lines
591 B
Go
27 lines
591 B
Go
package utils
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import "encoding/hex"
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// FromHex returns the bytes represented by the hexadecimal string s.
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// s may be prefixed with "0x".
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func FromHex(s string) []byte {
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if has0xPrefix(s) {
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s = s[2:]
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}
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if len(s)%2 == 1 {
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s = "0" + s
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}
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return Hex2Bytes(s)
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}
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// has0xPrefix validates str begins with '0x' or '0X'.
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func has0xPrefix(str string) bool {
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return len(str) >= 2 && str[0] == '0' && (str[1] == 'x' || str[1] == 'X')
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}
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// Hex2Bytes returns the bytes represented by the hexadecimal string str.
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func Hex2Bytes(str string) []byte {
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h, _ := hex.DecodeString(str)
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return h
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}
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