Two helper functions to deal with bytes

bytesManipulation.sol

pragma solidity ^0.7.0;

library bytesSwap {
    string public test_string = "hello";
    
    function bytes32ToString(bytes32 _bytes32) public pure returns (string memory) {
        uint8 i = 0;
        while(i < 32 && _bytes32[i] != 0) {
            i++;
        }
        bytes memory bytesArray = new bytes(i);
        for (i = 0; i < 32 && _bytes32[i] != 0; i++) {
            bytesArray[i] = _bytes32[i];
        }
        return string(bytesArray);
    }
    
    function stringToBytes32(string memory source) public pure returns (bytes32 result) {
        bytes memory tempEmptyStringTest = bytes(source);
        if (tempEmptyStringTest.length == 0) {
            return 0x0;
        }

        assembly { // solhint-disable-line no-inline-assembly
            result := mload(add(source, 32))
        }
  }
}

Can you make this a library, please? The function calls look a lot nicer:

bytes32 someValue;
string stringValue = someValue.bytes32ToString();