// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
import "./LibBytes.sol";
library LibUtil {
using LibBytes for bytes;
function getRevertMsg(
bytes memory _res
) internal pure returns (string memory) {
// If the _res length is less than 68, then the transaction failed silently (without a revert message)
if (_res.length < 68) return "Transaction reverted silently";
bytes memory revertData = _res.slice(4, _res.length - 4); // Remove the selector which is the first 4 bytes
return abi.decode(revertData, (string)); // All that remains is the revert string
}
/// @notice Determines whether the given address is the zero address
/// @param addr The address to verify
/// @return Boolean indicating if the address is the zero address
function isZeroAddress(address addr) internal pure returns (bool) {
return addr == address(0);
}
}