//SPDX-License-Identifier: UNLICENSED
//llydia cross 2021
pragma solidity ^0.8.0;

library InfinityMintUtil {
    function toString(
        uint256 _i
    ) internal pure returns (string memory _uintAsString) {
        if (_i == 0) {
            return '0';
        }
        uint256 j = _i;
        uint256 len;
        while (j != 0) {
            len++;
            j /= 10;
        }
        bytes memory bstr = new bytes(len);
        uint256 k = len;
        while (_i != 0) {
            k = k - 1;
            uint8 temp = (48 + uint8(_i - (_i / 10) * 10));
            bytes1 b1 = bytes1(temp);
            bstr[k] = b1;
            _i /= 10;
        }
        return string(bstr);
    }

    //checks if two strings (or bytes) are equal
    function isEqual(
        bytes memory s1,
        bytes memory s2
    ) internal pure returns (bool) {
        bytes memory b1 = bytes(s1);
        bytes memory b2 = bytes(s2);
        uint256 l1 = b1.length;
        if (l1 != b2.length) return false;
        for (uint256 i = 0; i < l1; i++) {
            //check each byte
            if (b1[i] != b2[i]) return false;
        }
        return true;
    }
}