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| Current File : /var/www/html/infraai.ai/frontend/node_modules/@jsonjoy.com/base64/lib/createToBase64.js |
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createToBase64 = void 0;
const flatstr_1 = require("./util/strings/flatstr");
const constants_1 = require("./constants");
const createToBase64 = (chars = constants_1.alphabet, pad = '=') => {
if (chars.length !== 64)
throw new Error('chars must be 64 characters long');
const table = chars.split('');
const table2 = [];
for (const c1 of table) {
for (const c2 of table) {
const two = (0, flatstr_1.flatstr)(c1 + c2);
table2.push(two);
}
}
const E = pad;
const EE = (0, flatstr_1.flatstr)(pad + pad);
return (uint8, length) => {
let out = '';
const extraLength = length % 3;
const baseLength = length - extraLength;
for (let i = 0; i < baseLength; i += 3) {
const o1 = uint8[i];
const o2 = uint8[i + 1];
const o3 = uint8[i + 2];
const v1 = (o1 << 4) | (o2 >> 4);
const v2 = ((o2 & 0b1111) << 8) | o3;
out += table2[v1] + table2[v2];
}
if (!extraLength)
return out;
if (extraLength === 1) {
const o1 = uint8[baseLength];
out += table2[o1 << 4] + EE;
}
else {
const o1 = uint8[baseLength];
const o2 = uint8[baseLength + 1];
const v1 = (o1 << 4) | (o2 >> 4);
const v2 = (o2 & 0b1111) << 2;
out += table2[v1] + table[v2] + E;
}
return out;
};
};
exports.createToBase64 = createToBase64;
//# sourceMappingURL=createToBase64.js.map