35 lines
928 B
Solidity
35 lines
928 B
Solidity
// SPDX-License-Identifier: MIT
|
|
|
|
pragma solidity ^0.6.0;
|
|
|
|
/**
|
|
* @dev String operations.
|
|
*/
|
|
library Strings {
|
|
/**
|
|
* @dev Converts a `uint256` to its ASCII `string` 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);
|
|
uint256 index = digits - 1;
|
|
temp = value;
|
|
while (temp != 0) {
|
|
buffer[index--] = byte(uint8(48 + temp % 10));
|
|
temp /= 10;
|
|
}
|
|
return string(buffer);
|
|
}
|
|
}
|