shortUtils.sol

pragma solidity 0.6.6;

contract Utils {
    address internal constant ETH_TOKEN_ADDRESS = address(
        0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE
    );
    address internal constant USDT_TOKEN_ADDRESS = address(
        0xdAC17F958D2ee523a2206206994597C13D831ec7
    );
    address internal constant DAI_TOKEN_ADDRESS = address(
        0x6B175474E89094C44Da98b954EedeAC495271d0F
    );
    address internal constant USDC_TOKEN_ADDRESS = address(
        0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
    );
    address internal constant WBTC_TOKEN_ADDRESS = address(
        0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599
    );
    address internal constant KNC_TOKEN_ADDRESS = address(
        0xdd974D5C2e2928deA5F71b9825b8b646686BD200
    );

    function getTokenDecimals(address token) public pure returns (uint256) {
        if (token == ETH_TOKEN_ADDRESS) {
            return 18;
        } else if (token == USDT_TOKEN_ADDRESS) {
            return 6;
        } else if (token == DAI_TOKEN_ADDRESS) {
            return 18;
        } else if (token == USDC_TOKEN_ADDRESS) {
            return 6;
        } else if (token == WBTC_TOKEN_ADDRESS) {
            return 8;
        } else if (token == KNC_TOKEN_ADDRESS) {
            return 18;
        } else {
            return 0;
        }
    }
}