Contract Name:
CyberBrokers
Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "./CyberBrokersMetadata.sol";
contract CyberBrokers is ERC721Burnable, Ownable
{
// Contracts
CyberBrokersMetadata public cyberBrokersMetadata;
// Metadata information
string private _baseUri = 'https://cyberbrokers.io/api/cyberbroker/';
// Minter address
address public cyberBrokersMintContract;
// Constants
uint256 constant public TOTAL_CYBERBROKERS = 10001;
// Keeping track
uint256 public totalMinted = 0;
uint256 public totalUnplugged = 0;
// Metadata provenance hash
string public provenanceHash = "c235983e3a4834b2fe7c153da0123f03b7d50e1e80537782fa8d73e642d799fa";
constructor(
address _CyberBrokersMetadataAddress
)
ERC721("CyberBrokers", "CYBERBROKERS")
{
// Set the addresses
setCyberBrokersMetadataAddress(_CyberBrokersMetadataAddress);
// Mint Asherah to Josie
_mintCyberBroker(0x2999377CD7A7b5FC9Fd61dB33610C891602Ce037, 0);
}
/**
* Metadata functionality
**/
function setCyberBrokersMetadataAddress(address _CyberBrokersMetadataAddress) public onlyOwner {
cyberBrokersMetadata = CyberBrokersMetadata(_CyberBrokersMetadataAddress);
}
function setBaseUri(string calldata _uri) public onlyOwner {
_baseUri = _uri;
}
function _baseURI() internal view virtual override returns (string memory) {
return _baseUri;
}
function tokenURI(uint256 tokenId) public view override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
if (cyberBrokersMetadata.hasOnchainMetadata(tokenId)) {
return cyberBrokersMetadata.tokenURI(tokenId);
}
return super.tokenURI(tokenId);
}
function render(uint256 _tokenId)
external view
returns (string memory)
{
require(_exists(_tokenId), "Non-existent token to render.");
return cyberBrokersMetadata.render(_tokenId);
}
/**
* Wrapper for Enumerable functions: totalSupply & getTokens
**/
function totalSupply() public view returns (uint256) {
return totalMinted - totalUnplugged;
}
// Do not use this on-chain, it's O(N)
// This is why we use a non-standard name instead of tokenOfOwnerByIndex
function getTokens(address addr) public view returns (uint256[] memory) {
// Prepare array of tokens
uint256 numTokensOwned = balanceOf(addr);
uint[] memory tokens = new uint[](numTokensOwned);
uint256 currentTokensIdx;
for (uint256 idx; idx < TOTAL_CYBERBROKERS; idx++) {
if (_exists(idx) && ownerOf(idx) == addr) {
tokens[currentTokensIdx++] = idx;
if (currentTokensIdx == numTokensOwned) {
break;
}
}
}
return tokens;
}
/**
* Minting functionality
**/
function setMintContractAddress(address _mintContract) public onlyOwner {
cyberBrokersMintContract = _mintContract;
}
function mintCyberBrokerFromMintContract(address to, uint256 tokenId) external {
require(msg.sender == cyberBrokersMintContract, "Only mint contract can mint");
_mintCyberBroker(to, tokenId);
}
function _mintCyberBroker(address to, uint256 tokenId) private {
require(totalMinted < TOTAL_CYBERBROKERS, "Max CyberBrokers minted");
_mint(to, tokenId);
totalMinted++;
}
/**
* Burn & unplug: alias for burn
**/
function burn(uint256 tokenId) public virtual override {
super.burn(tokenId);
totalUnplugged++;
}
function unplug(uint256 tokenId) public {
burn(tokenId);
}
/**
* Withdraw functions
**/
function withdraw() public onlyOwner {
uint256 balance = address(this).balance;
(bool success,) = msg.sender.call{value: balance}('');
require(success, 'Fail Transfer');
}
/**
* On-Chain Royalties & Interface
**/
function supportsInterface(bytes4 interfaceId)
public
view
override
returns (bool)
{
return
interfaceId == this.royaltyInfo.selector ||
super.supportsInterface(interfaceId);
}
function royaltyInfo(uint256, uint256 amount)
public
view
returns (address, uint256)
{
// 5% royalties
return (owner(), (amount * 500) / 10000);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Burnable.sol)
pragma solidity ^0.8.0;
import "../ERC721.sol";
import "../../../utils/Context.sol";
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be irreversibly burned (destroyed).
*/
abstract contract ERC721Burnable is Context, ERC721 {
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
_burn(tokenId);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./ContractDataStorage.sol";
import "./SvgParser.sol";
contract CyberBrokersMetadata is Ownable {
using Strings for uint256;
bool private _useOnChainMetadata = false;
string private _externalUri = "https://cyberbrokers.io/";
string private _imageCacheUri = "";
// Contracts
ContractDataStorage public contractDataStorage;
SvgParser public svgParser;
constructor(
address _contractDataStorageAddress,
address _svgParserAddress
) {
// Set the addresses
setContractDataStorageAddress(_contractDataStorageAddress);
setSvgParserAddress(_svgParserAddress);
}
function setContractDataStorageAddress(address _contractDataStorageAddress) public onlyOwner {
contractDataStorage = ContractDataStorage(_contractDataStorageAddress);
}
function setSvgParserAddress(address _svgParserAddress) public onlyOwner {
svgParser = SvgParser(_svgParserAddress);
}
/**
* On-Chain Metadata Construction
**/
function hasOnchainMetadata(uint256 tokenId) public view returns (bool) {
return _useOnChainMetadata;
}
function setOnChainMetadata(bool _state) public onlyOwner {
_useOnChainMetadata = _state;
}
function setExternalUri(string calldata _uri) public onlyOwner {
_externalUri = _uri;
}
function setImageCacheUri(string calldata _uri) public onlyOwner {
_imageCacheUri = _uri;
}
function tokenURI(uint256 tokenId) public view returns (string memory) {
return string(
abi.encodePacked(
abi.encodePacked(
bytes('data:application/json;utf8,{"name":"'),
getName(tokenId),
bytes('","description":"'),
getDescription(tokenId),
bytes('","external_url":"'),
getExternalUrl(tokenId),
bytes('","image":"'),
getImageCache(tokenId)
),
abi.encodePacked(
bytes('","attributes":['),
getAttributes(tokenId),
bytes(']}')
)
)
);
}
function getName(uint256 tokenId) public view returns (string memory) {
return "Test Name";
}
function getDescription(uint256 tokenId) public view returns (string memory) {
return "Test Description";
}
function getExternalUrl(uint256 tokenId) public view returns (string memory) {
return string(abi.encodePacked(_externalUri, tokenId.toString()));
}
function getImageCache(uint256 tokenId) public view returns (string memory) {
return string(abi.encodePacked(_imageCacheUri, tokenId.toString()));
}
function getAttributes(uint256 tokenId) public view returns (string memory) {
return string(
abi.encodePacked(
bytes('{"trait_type": "Mind", "value": 30}')
)
);
}
/**
* On-Chain Token SVG Rendering
**/
function renderData(string memory _key, uint256 _startIndex)
public
view
returns (
string memory _output,
uint256 _endIndex
)
{
require(contractDataStorage.hasKey(_key));
return svgParser.parse(contractDataStorage.getData(_key), _startIndex);
}
function render(uint256 _tokenId)
public
pure
returns (string memory)
{
require(_tokenId >= 0 && _tokenId <= 10000, "Can only render valid token ID");
return string("");
}
/**
* Off-Chain Token SVG Rendering
**/
function getTokenData(uint256 _tokenId)
public
pure
returns (string memory)
{
require(_tokenId >= 0 && _tokenId <= 10000, "Can only render valid token ID");
return string("");
}
function getOffchainSvgParser()
public
view
returns (
string memory _output
)
{
string memory _key = 'svg-parser.js';
require(contractDataStorage.hasKey(_key), "Off-chain SVG Parser not uploaded");
return string(contractDataStorage.getData(_key));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
/**
* Explaining the `init` variable within saveData:
*
* 61_00_00 -- PUSH2 (size)
* 60_00 -- PUSH1 (code position)
* 60_00 -- PUSH1 (mem position)
* 39 CODECOPY
* 61_00_00 PUSH2 (size)
* 60_00 PUSH1 (mem position)
* f3 RETURN
*
**/
contract ContractDataStorage is Ownable {
struct ContractData {
address rawContract;
uint128 size;
uint128 offset;
}
struct ContractDataPages {
uint256 maxPageNumber;
bool exists;
mapping (uint256 => ContractData) pages;
}
mapping (string => ContractDataPages) internal _contractDataPages;
mapping (address => bool) internal _controllers;
constructor() {
updateController(_msgSender(), true);
}
/**
* Access Control
**/
function updateController(address _controller, bool _status) public onlyOwner {
_controllers[_controller] = _status;
}
modifier onlyController() {
require(_controllers[_msgSender()], "ContractDataStorage: caller is not a controller");
_;
}
/**
* Storage & Revocation
**/
function saveData(
string memory _key,
uint128 _pageNumber,
bytes memory _b
)
public
onlyController
{
require(_b.length < 24576, "SvgStorage: Exceeded 24,576 bytes max contract size");
// Create the header for the contract data
bytes memory init = hex"610000_600e_6000_39_610000_6000_f3";
bytes1 size1 = bytes1(uint8(_b.length));
bytes1 size2 = bytes1(uint8(_b.length >> 8));
init[2] = size1;
init[1] = size2;
init[10] = size1;
init[9] = size2;
// Prepare the code for storage in a contract
bytes memory code = abi.encodePacked(init, _b);
// Create the contract
address dataContract;
assembly {
dataContract := create(0, add(code, 32), mload(code))
if eq(dataContract, 0) {
returndatacopy(0, 0, returndatasize())
revert(0, returndatasize())
}
}
// Store the record of the contract
saveDataForDeployedContract(
_key,
_pageNumber,
dataContract,
uint128(_b.length),
0
);
}
function saveDataForDeployedContract(
string memory _key,
uint256 _pageNumber,
address dataContract,
uint128 _size,
uint128 _offset
)
public
onlyController
{
// Pull the current data for the contractData
ContractDataPages storage _cdPages = _contractDataPages[_key];
// Store the maximum page
if (_cdPages.maxPageNumber < _pageNumber) {
_cdPages.maxPageNumber = _pageNumber;
}
// Keep track of the existance of this key
_cdPages.exists = true;
// Add the page to the location needed
_cdPages.pages[_pageNumber] = ContractData(
dataContract,
_size,
_offset
);
}
function revokeContractData(
string memory _key
)
public
onlyController
{
delete _contractDataPages[_key];
}
function getSizeOfPages(
string memory _key
)
public
view
returns (uint256)
{
// For all data within the contract data pages, iterate over and compile them
ContractDataPages storage _cdPages = _contractDataPages[_key];
// Determine the total size
uint256 totalSize;
for (uint256 idx; idx <= _cdPages.maxPageNumber; idx++) {
totalSize += _cdPages.pages[idx].size;
}
return totalSize;
}
function getData(
string memory _key
)
public
view
returns (bytes memory)
{
// Get the total size
uint256 totalSize = getSizeOfPages(_key);
// Create a region large enough for all of the data
bytes memory _totalData = new bytes(totalSize);
// Retrieve the pages
ContractDataPages storage _cdPages = _contractDataPages[_key];
// For each page, pull and compile
uint256 currentPointer = 32;
for (uint256 idx; idx <= _cdPages.maxPageNumber; idx++) {
ContractData storage dataPage = _cdPages.pages[idx];
address dataContract = dataPage.rawContract;
uint256 size = uint256(dataPage.size);
uint256 offset = uint256(dataPage.offset);
// Copy directly to total data
assembly {
extcodecopy(dataContract, add(_totalData, currentPointer), offset, size)
}
// Update the current pointer
currentPointer += size;
}
return _totalData;
}
function getDataForAll(string[] memory _keys)
public
view
returns (bytes memory)
{
// Get the total size of all of the keys
uint256 totalSize;
for (uint256 idx; idx < _keys.length; idx++) {
totalSize += getSizeOfPages(_keys[idx]);
}
// Create a region large enough for all of the data
bytes memory _totalData = new bytes(totalSize);
// For each key, pull down all data
uint256 currentPointer = 32;
for (uint256 idx; idx < _keys.length; idx++) {
// Retrieve the set of pages
ContractDataPages storage _cdPages = _contractDataPages[_keys[idx]];
// For each page, pull and compile
for (uint256 innerIdx; innerIdx <= _cdPages.maxPageNumber; innerIdx++) {
ContractData storage dataPage = _cdPages.pages[innerIdx];
address dataContract = dataPage.rawContract;
uint256 size = uint256(dataPage.size);
uint256 offset = uint256(dataPage.offset);
// Copy directly to total data
assembly {
extcodecopy(dataContract, add(_totalData, currentPointer), offset, size)
}
// Update the current pointer
currentPointer += size;
}
}
return _totalData;
}
function hasKey(string memory _key)
public
view
returns (bool)
{
return _contractDataPages[_key].exists;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./Utils.sol";
contract SvgParser {
// Limits
uint256 constant DEFAULT_THRESHOLD_COUNTER = 2500;
// Bits & Masks
bytes1 constant tagBit = bytes1(0x80);
bytes1 constant startTagBit = bytes1(0x40);
bytes1 constant tagTypeMask = bytes1(0x3F);
bytes1 constant attributeTypeMask = bytes1(0x7F);
bytes1 constant dCommandBit = bytes1(0x80);
bytes1 constant percentageBit = bytes1(0x40);
bytes1 constant negativeBit = bytes1(0x20);
bytes1 constant decimalBit = bytes1(0x10);
bytes1 constant numberMask = bytes1(0x0F);
bytes1 constant filterInIdBit = bytes1(0x80);
bytes1 constant filterInIdMask = bytes1(0x7F);
// SVG tags
bytes constant SVG_OPEN_TAG = bytes('<?xml version="1.0" encoding="UTF-8"?><svg width="1320px" height="1760px" viewBox="0 0 1320 1760" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">');
bytes constant SVG_CLOSE_TAG = bytes("</svg>");
bytes[25] TAGS = [
bytes("g"),
bytes("polygon"),
bytes("path"),
bytes("circle"),
bytes("defs"),
bytes("linearGradient"),
bytes("stop"),
bytes("rect"),
bytes("polyline"),
bytes("text"),
bytes("tspan"),
bytes("mask"),
bytes("use"),
bytes("ellipse"),
bytes("radialGradient"),
bytes("filter"),
bytes("feColorMatrix"),
bytes("feComposite"),
bytes("feGaussianBlur"),
bytes("feMorphology"),
bytes("feOffset"),
bytes("pattern"),
bytes("feMergeNode"),
bytes("feMerge"),
bytes("INVALIDTAG")
];
bytes[54] ATTRIBUTES = [
bytes("d"),
bytes("points"),
bytes("transform"),
bytes("cx"),
bytes("cy"),
bytes("r"),
bytes("stroke"),
bytes("stroke-width"),
bytes("fill"),
bytes("fill-opacity"),
bytes("translate"),
bytes("rotate"),
bytes("scale"),
bytes("x1"),
bytes("y1"),
bytes("x2"),
bytes("y2"),
bytes("stop-color"),
bytes("offset"),
bytes("stop-opacity"),
bytes("width"),
bytes("height"),
bytes("x"),
bytes("y"),
bytes("font-size"),
bytes("letter-spacing"),
bytes("opacity"),
bytes("id"),
bytes("xlink:href"),
bytes("rx"),
bytes("ry"),
bytes("mask"),
bytes("fx"),
bytes("fy"),
bytes("gradientTransform"),
bytes("filter"),
bytes("filterUnits"),
bytes("result"),
bytes("in"),
bytes("in2"),
bytes("type"),
bytes("values"),
bytes("operator"),
bytes("k1"),
bytes("k2"),
bytes("k3"),
bytes("k4"),
bytes("stdDeviation"),
bytes("edgeMode"),
bytes("radius"),
bytes("fill-rule"),
bytes("dx"),
bytes("dy"),
bytes("INVALIDATTRIBUTE")
];
bytes[2] PAIR_NUMBER_SET_ATTRIBUTES = [
bytes("translate"),
bytes("scale")
];
bytes[4] PAIR_COLOR_ATTRIBUTES = [
bytes("stroke"),
bytes("fill"),
bytes("stop-color"),
bytes("mask")
];
bytes[23] SINGLE_NUMBER_SET_ATTRIBUTES = [
bytes("cx"),
bytes("cy"),
bytes("r"),
bytes("rotate"),
bytes("x1"),
bytes("y1"),
bytes("x2"),
bytes("y2"),
bytes("offset"),
bytes("x"),
bytes("y"),
bytes("rx"),
bytes("ry"),
bytes("fx"),
bytes("fy"),
bytes("font-size"),
bytes("letter-spacing"),
bytes("stroke-width"),
bytes("width"),
bytes("height"),
bytes("fill-opacity"),
bytes("stop-opacity"),
bytes("opacity")
];
bytes[20] D_COMMANDS = [
bytes("M"),
bytes("m"),
bytes("L"),
bytes("l"),
bytes("H"),
bytes("h"),
bytes("V"),
bytes("v"),
bytes("C"),
bytes("c"),
bytes("S"),
bytes("s"),
bytes("Q"),
bytes("q"),
bytes("T"),
bytes("t"),
bytes("A"),
bytes("a"),
bytes("Z"),
bytes("z")
];
bytes[2] FILL_RULE = [
bytes("nonzero"),
bytes("evenodd")
];
bytes[2] FILTER_UNIT = [
bytes("userSpaceOnUse"),
bytes("objectBoundingBox")
];
bytes[6] FILTER_IN = [
bytes("SourceGraphic"),
bytes("SourceAlpha"),
bytes("BackgroundImage"),
bytes("BackgroundAlpha"),
bytes("FillPaint"),
bytes("StrokePaint")
];
bytes[16] FILTER_TYPE = [
bytes("translate"),
bytes("scale"),
bytes("rotate"),
bytes("skewX"),
bytes("skewY"),
bytes("matrix"),
bytes("saturate"),
bytes("hueRotate"),
bytes("luminanceToAlpha"),
bytes("identity"),
bytes("table"),
bytes("discrete"),
bytes("linear"),
bytes("gamma"),
bytes("fractalNoise"),
bytes("turbulence")
];
bytes[9] FILTER_OPERATOR = [
bytes("over"),
bytes("in"),
bytes("out"),
bytes("atop"),
bytes("xor"),
bytes("lighter"),
bytes("arithmetic"),
bytes("erode"),
bytes("dilate")
];
bytes[3] FILTER_EDGEMODE = [
bytes("duplicate"),
bytes("wrap"),
bytes("none")
];
function checkTag(bytes1 line) internal pure returns (bool) {
return line & tagBit > 0;
}
function checkStartTag(bytes1 line) internal pure returns (bool) {
return line & startTagBit > 0;
}
function getTag(bytes1 line) internal view returns (bytes memory) {
uint8 key = uint8(line & tagTypeMask);
if (key >= TAGS.length - 1) {
return TAGS[TAGS.length - 1];
}
return TAGS[key];
}
function getAttribute(bytes1 line) internal view returns (bytes memory) {
uint8 key = uint8(line & attributeTypeMask);
if (key >= ATTRIBUTES.length - 1) {
return ATTRIBUTES[ATTRIBUTES.length - 1];
}
return ATTRIBUTES[key];
}
function compareAttrib(bytes memory attrib, string memory compareTo) internal pure returns (bool) {
return keccak256(attrib) == keccak256(bytes(compareTo));
}
function compareAttrib(bytes memory attrib, bytes storage compareTo) internal pure returns (bool) {
return keccak256(attrib) == keccak256(compareTo);
}
function addOutput(bytes memory _output, uint256 _outputIdx, bytes memory _addendum) internal pure returns (uint256) {
for (uint256 _idx; _idx < _addendum.length; _idx++) {
_output[_outputIdx++] = _addendum[_idx];
}
return _outputIdx;
}
function addOutput(bytes memory _output, uint256 _outputIdx, bytes memory _addendum1, bytes memory _addendum2)
internal pure returns (uint256)
{
return addOutput(_output, addOutput(_output, _outputIdx, _addendum1), _addendum2);
}
function addOutput(bytes memory _output, uint256 _outputIdx, bytes memory _addendum1, bytes memory _addendum2, bytes memory _addendum3)
internal pure returns (uint256)
{
return addOutput(_output, addOutput(_output, addOutput(_output, _outputIdx, _addendum1), _addendum2), _addendum3);
}
function addOutput(bytes memory _output, uint256 _outputIdx, bytes memory _addendum1, bytes memory _addendum2, bytes memory _addendum3, bytes memory _addendum4)
internal pure returns (uint256)
{
return addOutput(_output, addOutput(_output, addOutput(_output, addOutput(_output, _outputIdx, _addendum1), _addendum2), _addendum3), _addendum4);
}
function parse(bytes memory input, uint256 idx) public view returns (string memory, uint256) {
return parse(input, idx, DEFAULT_THRESHOLD_COUNTER);
}
function parse(bytes memory input, uint256 idx, uint256 thresholdCounter) public view returns (string memory, uint256) {
// Keep track of what we're returning
bytes memory output = new bytes(thresholdCounter * 15); // Plenty of padding
uint256 outputIdx = 0;
bool isTagOpen = false;
uint256 counter = idx;
// Start the output with SVG tags if needed
if (idx == 0) {
outputIdx = addOutput(output, outputIdx, SVG_OPEN_TAG);
}
// Go through all bytes we want to review
while (idx < input.length)
{
// Get the current byte
bytes1 _b = bytes1(input[idx]);
// If this is a tag, determine if we're creating a new tag
if (checkTag(_b)) {
// Close the current tag
bool closeTag = false;
if (isTagOpen) {
closeTag = true;
isTagOpen = false;
if ((idx - counter) >= thresholdCounter) {
outputIdx = addOutput(output, outputIdx, bytes(">"));
break;
}
}
// Start the next tag
if (checkStartTag(_b)) {
isTagOpen = true;
if (closeTag) {
outputIdx = addOutput(output, outputIdx, bytes("><"), getTag(_b));
} else {
outputIdx = addOutput(output, outputIdx, bytes("<"), getTag(_b));
}
} else {
// If needed, open and close an end tag
if (closeTag) {
outputIdx = addOutput(output, outputIdx, bytes("></"), getTag(_b), bytes(">"));
} else {
outputIdx = addOutput(output, outputIdx, bytes("</"), getTag(_b), bytes(">"));
}
}
}
else
{
// Attributes
bytes memory attrib = getAttribute(_b);
if (compareAttrib(attrib, "transform") || compareAttrib(attrib, "gradientTransform")) {
// Keep track of which transform we're doing
bool isGradientTransform = compareAttrib(attrib, "gradientTransform");
// Get the next byte & attribute
idx += 2;
_b = bytes1(input[idx]);
attrib = getAttribute(_b);
outputIdx = addOutput(output, outputIdx, bytes(" "), isGradientTransform ? bytes('gradientTransform="') : bytes('transform="'));
while (compareAttrib(attrib, 'translate') || compareAttrib(attrib, 'rotate') || compareAttrib(attrib, 'scale')) {
outputIdx = addOutput(output, outputIdx, bytes(" "));
(idx, outputIdx) = parseAttributeValues(output, outputIdx, attrib, input, idx);
// Get the next byte & attribute
idx += 2;
_b = bytes1(input[idx]);
attrib = getAttribute(_b);
}
outputIdx = addOutput(output, outputIdx, bytes('"'));
// Undo the previous index increment
idx -= 2;
}
else if (compareAttrib(attrib, "d")) {
(idx, outputIdx) = packDPoints(output, outputIdx, input, idx);
}
else if (compareAttrib(attrib, "points"))
{
(idx, outputIdx) = packPoints(output, outputIdx, input, idx, bytes(' points="'));
}
else if (compareAttrib(attrib, "values"))
{
(idx, outputIdx) = packPoints(output, outputIdx, input, idx, bytes(' values="'));
}
else
{
outputIdx = addOutput(output, outputIdx, bytes(" "));
(idx, outputIdx) = parseAttributeValues(output, outputIdx, attrib, input, idx);
}
}
idx += 2;
}
if (idx >= input.length) {
// Close out the SVG tags
outputIdx = addOutput(output, outputIdx, SVG_CLOSE_TAG);
idx = 0;
}
// Pack everything down to the size that actually fits
bytes memory finalOutput = new bytes(outputIdx);
for (uint256 _idx; _idx < outputIdx; _idx++) {
finalOutput[_idx] = output[_idx];
}
return (string(finalOutput), idx);
}
function packDPoints(bytes memory output, uint256 outputIdx, bytes memory input, uint256 idx) internal view returns (uint256, uint256) {
outputIdx = addOutput(output, outputIdx, bytes(' d="'));
// Due to the open-ended nature of points, we concat directly to local_output
idx += 2;
uint256 count = uint256(uint8(input[idx + 1])) * 2**8 + uint256(uint8(input[idx]));
for (uint256 countIdx = 0; countIdx < count; countIdx++) {
idx += 2;
// Add the d command prior to any bits
if (uint8(input[idx + 1] & dCommandBit) > 0) {
outputIdx = addOutput(output, outputIdx, bytes(" "), D_COMMANDS[uint8(input[idx])]);
}
else
{
countIdx++;
outputIdx = addOutput(output, outputIdx, bytes(" "), parseNumberSetValues(input[idx], input[idx + 1]), bytes(","), parseNumberSetValues(input[idx + 2], input[idx + 3]));
idx += 2;
}
}
outputIdx = addOutput(output, outputIdx, bytes('"'));
return (idx, outputIdx);
}
function packPoints(bytes memory output, uint256 outputIdx, bytes memory input, uint256 idx, bytes memory attributePreface) internal view returns (uint256, uint256) {
outputIdx = addOutput(output, outputIdx, attributePreface);
// Due to the open-ended nature of points, we concat directly to local_output
idx += 2;
uint256 count = uint256(uint8(input[idx + 1])) * 2**8 + uint256(uint8(input[idx]));
for (uint256 countIdx = 0; countIdx < count; countIdx++) {
idx += 2;
bytes memory numberSet = parseNumberSetValues(input[idx], input[idx + 1]);
if (countIdx > 0) {
outputIdx = addOutput(output, outputIdx, bytes(" "), numberSet);
} else {
outputIdx = addOutput(output, outputIdx, numberSet);
}
}
outputIdx = addOutput(output, outputIdx, bytes('"'));
return (idx, outputIdx);
}
function parseAttributeValues(
bytes memory output,
uint256 outputIdx,
bytes memory attrib,
bytes memory input,
uint256 idx
)
internal
view
returns (uint256, uint256)
{
// Handled in main function
if (compareAttrib(attrib, "d") || compareAttrib(attrib, "points") || compareAttrib(attrib, "values") || compareAttrib(attrib, 'transform')) {
return (idx + 2, outputIdx);
}
if (compareAttrib(attrib, 'id') || compareAttrib(attrib, 'xlink:href') || compareAttrib(attrib, 'filter') || compareAttrib(attrib, 'result'))
{
bytes memory number = Utils.uint2bytes(uint256(uint8(input[idx + 3])) * 2**8 + uint256(uint8(input[idx + 2])));
if (compareAttrib(attrib, 'xlink:href')) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="#id-'), number, bytes('"'));
} else if (compareAttrib(attrib, 'filter')) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="url(#id-'), number, bytes(')"'));
} else {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="id-'), number, bytes('"'));
}
return (idx + 2, outputIdx);
}
for (uint256 attribIdx = 0; attribIdx < PAIR_NUMBER_SET_ATTRIBUTES.length; attribIdx++) {
if (compareAttrib(attrib, PAIR_NUMBER_SET_ATTRIBUTES[attribIdx])) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('('), parseNumberSetValues(input[idx + 2], input[idx + 3]), bytes(','));
outputIdx = addOutput(output, outputIdx, parseNumberSetValues(input[idx + 4], input[idx + 5]), bytes(')'));
return (idx + 4, outputIdx);
}
}
for (uint256 attribIdx = 0; attribIdx < PAIR_COLOR_ATTRIBUTES.length; attribIdx++) {
if (compareAttrib(attrib, PAIR_COLOR_ATTRIBUTES[attribIdx])) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), parseColorValues(input[idx + 2], input[idx + 3], input[idx + 4], input[idx + 5]), bytes('"'));
return (idx + 4, outputIdx);
}
}
if (compareAttrib(attrib, 'rotate')) {
// Default, single number set values
outputIdx = addOutput(output, outputIdx, attrib, bytes('('), parseNumberSetValues(input[idx + 2], input[idx + 3]), bytes(')'));
return (idx + 2, outputIdx);
}
// Dictionary lookups
if (compareAttrib(attrib, 'in') || compareAttrib(attrib, 'in2')) {
// Special case for the dictionary lookup for in & in2 => allow for ID lookup
if (uint8(input[idx + 3] & filterInIdBit) > 0) {
bytes memory number = Utils.uint2bytes(uint256(uint8(input[idx + 3] & filterInIdMask)) * 2**8 + uint256(uint8(input[idx + 2])));
outputIdx = addOutput(output, outputIdx, attrib, bytes('="id-'), number, bytes('"'));
} else {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), FILTER_IN[uint8(input[idx + 2])], bytes('"'));
}
return (idx + 2, outputIdx);
} else if (compareAttrib(attrib, 'type')) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), FILTER_TYPE[uint8(input[idx + 2])], bytes('"'));
return (idx + 2, outputIdx);
} else if (compareAttrib(attrib, 'operator')) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), FILTER_OPERATOR[uint8(input[idx + 2])], bytes('"'));
return (idx + 2, outputIdx);
} else if (compareAttrib(attrib, 'edgeMode')) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), FILTER_EDGEMODE[uint8(input[idx + 2])], bytes('"'));
return (idx + 2, outputIdx);
} else if (compareAttrib(attrib, 'fill-rule')) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), FILL_RULE[uint8(input[idx + 2])], bytes('"'));
return (idx + 2, outputIdx);
} else if (compareAttrib(attrib, 'filterUnits')) {
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), FILTER_UNIT[uint8(input[idx + 2])], bytes('"'));
return (idx + 2, outputIdx);
}
// Default, single number set values
outputIdx = addOutput(output, outputIdx, attrib, bytes('="'), parseNumberSetValues(input[idx + 2], input[idx + 3]), bytes('"'));
return (idx + 2, outputIdx);
}
function parseColorValues(bytes1 one, bytes1 two, bytes1 three, bytes1 four) internal pure returns (bytes memory) {
if (uint8(two) == 0xFF && uint8(one) == 0 && uint8(four) == 0 && uint8(three) == 0) {
// None identifier case
return bytes("none");
}
else if (uint8(two) == 0x80 && uint8(one) == 0)
{
// URL identifier case
bytes memory number = Utils.uint2bytes(uint256(uint8(four)) * 2**8 + uint256(uint8(three)));
return abi.encodePacked("url(#id-", number, ")");
} else {
return Utils.unpackHexColorValues(uint8(one), uint8(four), uint8(three));
}
}
function parseNumberSetValues(bytes1 one, bytes1 two) internal pure returns (bytes memory) {
return Utils.unpackNumberSetValues(
uint256(uint8(two & numberMask)) * 2**8 + uint256(uint8(one)), // number
uint8(two & decimalBit) > 0, // decimal
uint8(two & negativeBit) > 0, // negative
uint8(two & percentageBit) > 0 // percent
);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
library Utils {
/**
* From https://github.com/provable-things/ethereum-api/blob/master/oraclizeAPI_0.5.sol
**/
function uint2bytes(uint _i) internal pure returns (bytes memory) {
if (_i == 0) {
return "0";
}
uint j = _i;
uint len;
while (j != 0) {
len++;
j /= 10;
}
bytes memory bstr = new bytes(len);
uint k = len - 1;
while (_i != 0) {
unchecked {
bstr[k--] = bytes1(uint8(48 + _i % 10));
}
_i /= 10;
}
return bstr;
}
function unpackNumberSetValues(uint _i, bool decimal, bool negative, bool percent) internal pure returns (bytes memory) {
// Base case
if (_i == 0) {
if (percent) {
return "0%";
} else {
return "0";
}
}
// Kick off length with the slots needed to make room for, considering certain bits
uint j = _i;
uint len = (negative ? 1 : 0) + (percent ? 1 : 0) + (decimal ? 2 : 0);
// See how many tens we need
uint numTens;
while (j != 0) {
numTens++;
j /= 10;
}
// Expand length
// Special case: if decimal & numTens is less than 3, need to pad by 3 since we'll left-pad zeroes
if (decimal && numTens < 3) {
len += 3;
} else {
len += numTens;
}
// Now create the byte "string"
bytes memory bstr = new bytes(len);
// Index from right-most to left-most
uint k = len - 1;
// Percent character
if (percent) {
bstr[k--] = bytes1("%");
}
// The entire number
while (_i != 0) {
unchecked {
bstr[k--] = bytes1(uint8(48 + _i % 10));
}
_i /= 10;
}
// If a decimal, we need to left-pad if the numTens isn't enough
if (decimal) {
while (numTens < 3) {
bstr[k--] = bytes1("0");
numTens++;
}
bstr[k--] = bytes1(".");
unchecked {
bstr[k--] = bytes1("0");
}
}
// If negative, the last byte should be negative
if (negative) {
bstr[0] = bytes1("-");
}
return bstr;
}
/**
* Reference pulled from https://gist.github.com/okwme/f3a35193dc4eb9d1d0db65ccf3eb4034
**/
function unpackHexColorValues(uint8 r, uint8 g, uint8 b) internal pure returns (bytes memory) {
bytes memory rHex = Utils.uint2hexchar(r);
bytes memory gHex = Utils.uint2hexchar(g);
bytes memory bHex = Utils.uint2hexchar(b);
bytes memory bstr = new bytes(7);
bstr[6] = bHex[1];
bstr[5] = bHex[0];
bstr[4] = gHex[1];
bstr[3] = gHex[0];
bstr[2] = rHex[1];
bstr[1] = rHex[0];
bstr[0] = bytes1("#");
return bstr;
}
function uint2hexchar(uint8 _i) internal pure returns (bytes memory) {
uint8 mask = 15;
bytes memory bstr = new bytes(2);
bstr[1] = (_i & mask) > 9 ? bytes1(uint8(55 + (_i & mask))) : bytes1(uint8(48 + (_i & mask)));
bstr[0] = ((_i >> 4) & mask) > 9 ? bytes1(uint8(55 + ((_i >> 4) & mask))) : bytes1(uint8(48 + ((_i >> 4) & mask)));
return bstr;
}
}