ox/_cjs/core/Base64.js

Ethereum Standard Library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.fromBytes = fromBytes;
exports.fromHex = fromHex;
exports.fromString = fromString;
exports.toBytes = toBytes;
exports.toHex = toHex;
exports.toString = toString;
const Bytes = require("./Bytes.js");
const Hex = require("./Hex.js");
const encoder = new TextEncoder();
const decoder = new TextDecoder();
const integerToCharacter = Object.fromEntries(Array.from('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/').map((a, i) => [i, a.charCodeAt(0)]));
const characterToInteger = {
    ...Object.fromEntries(Array.from('ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/').map((a, i) => [a.charCodeAt(0), i])),
    ['='.charCodeAt(0)]: 0,
    ['-'.charCodeAt(0)]: 62,
    ['_'.charCodeAt(0)]: 63,
};
function fromBytes(value, options = {}) {
    const { pad = true, url = false } = options;
    const encoded = new Uint8Array(Math.ceil(value.length / 3) * 4);
    for (let i = 0, j = 0; j < value.length; i += 4, j += 3) {
        const y = (value[j] << 16) + (value[j + 1] << 8) + (value[j + 2] | 0);
        encoded[i] = integerToCharacter[y >> 18];
        encoded[i + 1] = integerToCharacter[(y >> 12) & 0x3f];
        encoded[i + 2] = integerToCharacter[(y >> 6) & 0x3f];
        encoded[i + 3] = integerToCharacter[y & 0x3f];
    }
    const k = value.length % 3;
    const end = Math.floor(value.length / 3) * 4 + (k && k + 1);
    let base64 = decoder.decode(new Uint8Array(encoded.buffer, 0, end));
    if (pad && k === 1)
        base64 += '==';
    if (pad && k === 2)
        base64 += '=';
    if (url)
        base64 = base64.replaceAll('+', '-').replaceAll('/', '_');
    return base64;
}
function fromHex(value, options = {}) {
    return fromBytes(Bytes.fromHex(value), options);
}
function fromString(value, options = {}) {
    return fromBytes(Bytes.fromString(value), options);
}
function toBytes(value) {
    const base64 = value.replace(/=+$/, '');
    const size = base64.length;
    const decoded = new Uint8Array(size + 3);
    encoder.encodeInto(base64 + '===', decoded);
    for (let i = 0, j = 0; i < base64.length; i += 4, j += 3) {
        const x = (characterToInteger[decoded[i]] << 18) +
            (characterToInteger[decoded[i + 1]] << 12) +
            (characterToInteger[decoded[i + 2]] << 6) +
            characterToInteger[decoded[i + 3]];
        decoded[j] = x >> 16;
        decoded[j + 1] = (x >> 8) & 0xff;
        decoded[j + 2] = x & 0xff;
    }
    const decodedSize = (size >> 2) * 3 + (size % 4 && (size % 4) - 1);
    return new Uint8Array(decoded.buffer, 0, decodedSize);
}
function toHex(value) {
    return Hex.fromBytes(toBytes(value));
}
function toString(value) {
    return Bytes.toString(toBytes(value));
}
//# sourceMappingURL=Base64.js.map