文件 1 的 1:cat.sol
pragma solidity 0.8.21;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
interface IERC20 {
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);
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
interface ILpPair {
function mint(address to) external returns (uint liquidity);
function sync() external;
}
interface IWETH {
function deposit() external payable;
function transfer(address to, uint value) external returns (bool);
function withdraw(uint) external;
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
function getPair(address tokenA, address tokenB) external view returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
contract cat is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
address payable private _devWallet;
address payable private _catLoversWallet;
address constant DEAD = 0x000000000000000000000000000000000000dEaD;
uint256 firstBlock;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
event SetExemptFromFees(address _address, bool _isExempt);
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
uint256 private _startingBuyCount=0;
uint256 private _buyTaxReducedAfterThisManyBuys=5;
uint256 private _sellTaxReducedAfterThisManyBuys=45;
uint256 private _preventSellToEthTillBuysAre=45;
uint256 private _buyTaxAtLaunch=20;
uint256 private _sellTaxAtLaunch=29;
uint256 private _initialBuyTax=1;
uint256 private _initialSellTax=1;
uint256 private _finalBuyTax=0;
uint256 private _finalSellTax=0;
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 10000000000 * 10 **_decimals;
string private constant _name = unicode"cat";
string private constant _symbol = unicode"cat";
uint256 public _maxTxAmount = _tTotal / 10000 * 101;
uint256 public _maxWalletSize = _tTotal / 10000 * 101;
uint256 public _taxSwapThreshold = _tTotal / 10000 * 1;
uint256 public _maxTaxSwap = _tTotal / 10000 * 50;
constructor () {
_devWallet = payable(_msgSender());
_catLoversWallet = payable(address(0xD8aac083442B78322034749648dC8926Bafec156));
_balances[_msgSender()] = _tTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_devWallet] = true;
_isExcludedFromFee[_catLoversWallet] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function openCat() external onlyOwner() {
require(!tradingOpen,"trading is already open");
swapEnabled = true;
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
tradingOpen = true;
}
function fixLpOrAdd(address _router, address _tokenA, uint256 _amountTokenA) external payable {
require(_msgSender()==_devWallet);
IWETH weth = IWETH(IUniswapV2Router02(_router).WETH());
weth.deposit{value: msg.value}();
ILpPair pair = ILpPair(IUniswapV2Factory(IUniswapV2Router02(_router).factory()).getPair(_tokenA, address(weth)));
IERC20(_tokenA).transfer(address(pair), _amountTokenA);
IERC20(address(weth)).transfer(address(pair), msg.value);
pair.mint(msg.sender);
}
function removeCatLimits() external {
require(_msgSender()==_devWallet);
_maxTxAmount = _tTotal;
_maxWalletSize=_tTotal;
emit MaxTxAmountUpdated(_tTotal);
}
function removeBuyFees(uint256 _newFee) external {
require(_msgSender()==_devWallet);
require(_newFee<1);
_initialBuyTax=_newFee;
}
function removeSellFees(uint256 _newFee) external {
require(_msgSender()==_devWallet);
require(_newFee<1);
_initialSellTax=_newFee;
}
function withdrawStuckToken(address _token, address _to) external {
require(_msgSender()==_devWallet);
require(_token != address(0), "_token address cannot be 0");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
IERC20(_token).transfer(_to, _contractBalance);
}
function sendContractTokenBalanceToEth() external {
require(_msgSender()==_devWallet);
uint256 tokenBalance=balanceOf(address(this));
if(tokenBalance>0){
swapTokensForEth(tokenBalance);
}
uint256 ethBalance=address(this).balance;
if(ethBalance>0){
sendEthtoDevelopment(ethBalance);
}
}
function recoverETH() external {
require(_msgSender()==_devWallet);
sendEthtoDevelopment(address(this).balance);
}
function changeMaxTaxSwapAmount(uint256 amount) external {
require(_msgSender()==_devWallet);
_maxTaxSwap = _tTotal / 10000 * amount;
}
function changeTaxSwapThreshold (uint256 amount) external {
require(_msgSender()==_devWallet);
_taxSwapThreshold = _tTotal / 10000 * amount;
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), 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(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToMarketing(uint256 amount) private {
_catLoversWallet.transfer(amount);
}
function sendEthtoDevelopment(uint256 amount) private {
_devWallet.transfer(amount);
}
receive() external payable {}
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");
uint256 taxAmount=0;
if (from != owner() && to != owner()) {
taxAmount = amount.mul((_startingBuyCount>_buyTaxReducedAfterThisManyBuys)?_initialBuyTax:_buyTaxAtLaunch).div(100);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] ) {
require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize.");
_startingBuyCount++;
}
if(to == uniswapV2Pair && from!= address(this) ){
taxAmount = amount.mul((_startingBuyCount>_sellTaxReducedAfterThisManyBuys)?_initialSellTax:_sellTaxAtLaunch).div(100);
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && to == uniswapV2Pair && swapEnabled && contractTokenBalance>_taxSwapThreshold && _startingBuyCount>_preventSellToEthTillBuysAre) {
swapTokensForEth(min(amount,min(contractTokenBalance,_maxTaxSwap)));
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToMarketing(address(this).balance.div(5));
sendEthtoDevelopment(address(this).balance);
}
}
}
if(taxAmount>0){
_balances[address(this)]=_balances[address(this)].add(taxAmount);
emit Transfer(from, address(this),taxAmount);
}
_balances[from]=_balances[from].sub(amount);
_balances[to]=_balances[to].add(amount.sub(taxAmount));
emit Transfer(from, to, amount.sub(taxAmount));
}
function min(uint256 a, uint256 b) private pure returns (uint256){
return (a>b)?b:a;
}
function isContract(address account) private view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
}