basant307/AI_Governance_Project

1"use strict";2Object.defineProperty(exports, "__esModule", { value: true });3exports.createToBase64 = void 0;4const flatstr_1 = require("./util/strings/flatstr");5const constants_1 = require("./constants");6const createToBase64 = (chars = constants_1.alphabet, pad = '=') => {7    if (chars.length !== 64)8        throw new Error('chars must be 64 characters long');9    const table = chars.split('');10    const table2 = [];11    for (const c1 of table) {12        for (const c2 of table) {13            const two = (0, flatstr_1.flatstr)(c1 + c2);14            table2.push(two);15        }16    }17    const E = pad;18    const EE = (0, flatstr_1.flatstr)(pad + pad);19    return (uint8, length) => {20        let out = '';21        const extraLength = length % 3;22        const baseLength = length - extraLength;23        for (let i = 0; i < baseLength; i += 3) {24            const o1 = uint8[i];25            const o2 = uint8[i + 1];26            const o3 = uint8[i + 2];27            const v1 = (o1 << 4) | (o2 >> 4);28            const v2 = ((o2 & 0b1111) << 8) | o3;29            out += table2[v1] + table2[v2];30        }31        if (!extraLength)32            return out;33        if (extraLength === 1) {34            const o1 = uint8[baseLength];35            out += table2[o1 << 4] + EE;36        }37        else {38            const o1 = uint8[baseLength];39            const o2 = uint8[baseLength + 1];40            const v1 = (o1 << 4) | (o2 >> 4);41            const v2 = (o2 & 0b1111) << 2;42            out += table2[v1] + table[v2] + E;43        }44        return out;45    };46};47exports.createToBase64 = createToBase64;48//# sourceMappingURL=createToBase64.js.map