Contract Source Code (Solidity Standard Json-Input format)

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pragma solidity >=0.8.0 <0.9.0;
import "@openzeppelin/contracts/utils/Strings.sol";
import 'base64-sol/base64.sol';
library ContractInfo {
    string internal constant name = "Forever Message";
    string internal constant symbol = "FMSG";
    string internal constant base_external_url = "https://forevermessage.xyz/";
    function tokenName(uint tokenId) public pure returns (string memory) {
        return string(abi.encodePacked(name, " #", Strings.toString(tokenId)));
    }
    
    function tokenDescription(uint tokenId) public pure returns (string memory) {
        return string(abi.encodePacked("Message #", Strings.toString(tokenId)," in the Forever Message series, a collection of messages that will live 
            forever on the Ethereum blockchain."));
    }
    
    function contractDescription() public pure returns (string memory) {
        return 'What would you say if you knew it would last forever?\\n\\nForever Message is an Ethereum-based application that allows anyone to send 
            messages that cannot be deleted, restricted, or tampered with in any way. All of your Forever Messages will be available forever to the 
            entire world exactly as you composed them.\\n\\nThere is no limit to the number of Forever Messages that can be sent, so send a message 
            that lasts forever today!';
    }
    
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// 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;
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// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0;
/// @title Base64
/// @author Brecht Devos - <brecht@loopring.org>
/// @notice Provides functions for encoding/decoding base64
library Base64 {
    string internal constant TABLE_ENCODE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    bytes  internal constant TABLE_DECODE = hex"0000000000000000000000000000000000000000000000000000000000000000"
                                            hex"00000000000000000000003e0000003f3435363738393a3b3c3d000000000000"
                                            hex"00000102030405060708090a0b0c0d0e0f101112131415161718190000000000"
                                            hex"001a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132330000000000";
    function encode(bytes memory data) internal pure returns (string memory) {
        if (data.length == 0) return '';
        // load the table into memory
        string memory table = TABLE_ENCODE;
        // multiply by 4/3 rounded up
        uint256 encodedLen = 4 * ((data.length + 2) / 3);
        // add some extra buffer at the end required for the writing
        string memory result = new string(encodedLen + 32);
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{
  "optimizer": {
    "enabled": true,
    "runs": 200,
    "details": {
      "yul": false
    }
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}
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[{"inputs":[],"name":"contractDescription","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"contractExternalURL","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"string[12]","name":"tokenAttributes","type":"string[12]"}],"name":"generateTokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenDescription","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenExternalURL","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenName","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"}]

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