basant307/AI_Governance_Project

1"use strict";2Object.defineProperty(exports, "__esModule", { value: true });3exports.createToBase64Bin = void 0;4const constants_1 = require("./constants");5const createToBase64Bin = (chars = constants_1.alphabet, pad = '=') => {6    if (chars.length !== 64)7        throw new Error('chars must be 64 characters long');8    const table = chars.split('').map((c) => c.charCodeAt(0));9    const table2 = [];10    for (const c1 of table) {11        for (const c2 of table) {12            const two = (c1 << 8) + c2;13            table2.push(two);14        }15    }16    const doAddPadding = pad.length === 1;17    const E = doAddPadding ? pad.charCodeAt(0) : 0;18    const EE = doAddPadding ? (E << 8) | E : 0;19    return (uint8, start, length, dest, offset) => {20        const extraLength = length % 3;21        const baseLength = length - extraLength;22        for (; start < baseLength; start += 3) {23            const o1 = uint8[start];24            const o2 = uint8[start + 1];25            const o3 = uint8[start + 2];26            const v1 = (o1 << 4) | (o2 >> 4);27            const v2 = ((o2 & 0b1111) << 8) | o3;28            dest.setInt32(offset, (table2[v1] << 16) + table2[v2]);29            offset += 4;30        }31        if (extraLength === 1) {32            const o1 = uint8[baseLength];33            if (doAddPadding) {34                dest.setInt32(offset, (table2[o1 << 4] << 16) + EE);35                offset += 4;36            }37            else {38                dest.setInt16(offset, table2[o1 << 4]);39                offset += 2;40            }41        }42        else if (extraLength) {43            const o1 = uint8[baseLength];44            const o2 = uint8[baseLength + 1];45            const v1 = (o1 << 4) | (o2 >> 4);46            const v2 = (o2 & 0b1111) << 2;47            if (doAddPadding) {48                dest.setInt32(offset, (table2[v1] << 16) + (table[v2] << 8) + E);49                offset += 4;50            }51            else {52                dest.setInt16(offset, table2[v1]);53                offset += 2;54                dest.setInt8(offset, table[v2]);55                offset += 1;56            }57        }58        return offset;59    };60};61exports.createToBase64Bin = createToBase64Bin;62//# sourceMappingURL=createToBase64Bin.js.map