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{
"language": "Solidity",
"sources": {
"contracts/libs/NFTDescriptorV2.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\r\n\r\n/// @title A library used to construct ERC721 token URIs and SVG images\r\n\r\n/*********************************\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n * ░░░░░░█████████░░█████████░░░ *\r\n * ░░░░░░██░░░████░░██░░░████░░░ *\r\n * ░░██████░░░████████░░░████░░░ *\r\n * ░░██░░██░░░████░░██░░░████░░░ *\r\n * ░░██░░██░░░████░░██░░░████░░░ *\r\n * ░░░░░░█████████░░█████████░░░ *\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n *********************************/\r\n\r\npragma solidity ^0.8.6;\r\n\r\nimport { Base64 } from 'base64-sol/base64.sol';\r\nimport { ISVGRenderer } from '../interfaces/ISVGRenderer.sol';\r\n\r\nlibrary NFTDescriptorV2 {\r\n struct TokenURIParams {\r\n string name;\r\n string description;\r\n string background;\r\n ISVGRenderer.Part[] parts;\r\n }\r\n\r\n /**\r\n * @notice Construct an ERC721 token URI.\r\n */\r\n function constructTokenURI(ISVGRenderer renderer, TokenURIParams memory params)\r\n public\r\n view\r\n returns (string memory)\r\n {\r\n string memory image = generateSVGImage(\r\n renderer,\r\n ISVGRenderer.SVGParams({ parts: params.parts, background: params.background })\r\n );\r\n\r\n // prettier-ignore\r\n return string(\r\n abi.encodePacked(\r\n 'data:application/json;base64,',\r\n Base64.encode(\r\n bytes(\r\n abi.encodePacked('{\"name\":\"', params.name, '\", \"description\":\"', params.description, '\", \"image\": \"', 'data:image/svg+xml;base64,', image, '\"}')\r\n )\r\n )\r\n )\r\n );\r\n }\r\n\r\n /**\r\n * @notice Generate an SVG image for use in the ERC721 token URI.\r\n */\r\n function generateSVGImage(ISVGRenderer renderer, ISVGRenderer.SVGParams memory params)\r\n public\r\n view\r\n returns (string memory svg)\r\n {\r\n return Base64.encode(bytes(renderer.generateSVG(params)));\r\n }\r\n}\r\n"
},
"base64-sol/base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.6.0;\n\n/// @title Base64\n/// @author Brecht Devos - <[email protected]>\n/// @notice Provides functions for encoding/decoding base64\nlibrary Base64 {\n string internal constant TABLE_ENCODE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n bytes internal constant TABLE_DECODE = hex\"0000000000000000000000000000000000000000000000000000000000000000\"\n hex\"00000000000000000000003e0000003f3435363738393a3b3c3d000000000000\"\n hex\"00000102030405060708090a0b0c0d0e0f101112131415161718190000000000\"\n hex\"001a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330000000000\";\n\n function encode(bytes memory data) internal pure returns (string memory) {\n if (data.length == 0) return '';\n\n // load the table into memory\n string memory table = TABLE_ENCODE;\n\n // multiply by 4/3 rounded up\n uint256 encodedLen = 4 * ((data.length + 2) / 3);\n\n // add some extra buffer at the end required for the writing\n string memory result = new string(encodedLen + 32);\n\n assembly {\n // set the actual output length\n mstore(result, encodedLen)\n\n // prepare the lookup table\n let tablePtr := add(table, 1)\n\n // input ptr\n let dataPtr := data\n let endPtr := add(dataPtr, mload(data))\n\n // result ptr, jump over length\n let resultPtr := add(result, 32)\n\n // run over the input, 3 bytes at a time\n for {} lt(dataPtr, endPtr) {}\n {\n // read 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // write 4 characters\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and(shr( 6, input), 0x3F))))\n resultPtr := add(resultPtr, 1)\n mstore8(resultPtr, mload(add(tablePtr, and( input, 0x3F))))\n resultPtr := add(resultPtr, 1)\n }\n\n // padding with '='\n switch mod(mload(data), 3)\n case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) }\n case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) }\n }\n\n return result;\n }\n\n function decode(string memory _data) internal pure returns (bytes memory) {\n bytes memory data = bytes(_data);\n\n if (data.length == 0) return new bytes(0);\n require(data.length % 4 == 0, \"invalid base64 decoder input\");\n\n // load the table into memory\n bytes memory table = TABLE_DECODE;\n\n // every 4 characters represent 3 bytes\n uint256 decodedLen = (data.length / 4) * 3;\n\n // add some extra buffer at the end required for the writing\n bytes memory result = new bytes(decodedLen + 32);\n\n assembly {\n // padding with '='\n let lastBytes := mload(add(data, mload(data)))\n if eq(and(lastBytes, 0xFF), 0x3d) {\n decodedLen := sub(decodedLen, 1)\n if eq(and(lastBytes, 0xFFFF), 0x3d3d) {\n decodedLen := sub(decodedLen, 1)\n }\n }\n\n // set the actual output length\n mstore(result, decodedLen)\n\n // prepare the lookup table\n let tablePtr := add(table, 1)\n\n // input ptr\n let dataPtr := data\n let endPtr := add(dataPtr, mload(data))\n\n // result ptr, jump over length\n let resultPtr := add(result, 32)\n\n // run over the input, 4 characters at a time\n for {} lt(dataPtr, endPtr) {}\n {\n // read 4 characters\n dataPtr := add(dataPtr, 4)\n let input := mload(dataPtr)\n\n // write 3 bytes\n let output := add(\n add(\n shl(18, and(mload(add(tablePtr, and(shr(24, input), 0xFF))), 0xFF)),\n shl(12, and(mload(add(tablePtr, and(shr(16, input), 0xFF))), 0xFF))),\n add(\n shl( 6, and(mload(add(tablePtr, and(shr( 8, input), 0xFF))), 0xFF)),\n and(mload(add(tablePtr, and( input , 0xFF))), 0xFF)\n )\n )\n mstore(resultPtr, shl(232, output))\n resultPtr := add(resultPtr, 3)\n }\n }\n\n return result;\n }\n}\n"
},
"contracts/interfaces/ISVGRenderer.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\r\n\r\n/// @title Interface for SVGRenderer\r\n\r\n/*********************************\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n * ░░░░░░█████████░░█████████░░░ *\r\n * ░░░░░░██░░░████░░██░░░████░░░ *\r\n * ░░██████░░░████████░░░████░░░ *\r\n * ░░██░░██░░░████░░██░░░████░░░ *\r\n * ░░██░░██░░░████░░██░░░████░░░ *\r\n * ░░░░░░█████████░░█████████░░░ *\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n * ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ *\r\n *********************************/\r\n\r\npragma solidity ^0.8.6;\r\n\r\ninterface ISVGRenderer {\r\n struct Part {\r\n bytes image;\r\n bytes palette;\r\n }\r\n\r\n struct SVGParams {\r\n Part[] parts;\r\n string background;\r\n }\r\n\r\n function generateSVG(SVGParams memory params) external view returns (string memory svg);\r\n\r\n function generateSVGPart(Part memory part) external view returns (string memory partialSVG);\r\n\r\n function generateSVGParts(Part[] memory parts) external view returns (string memory partialSVG);\r\n}\r\n"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 10000
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}
} |