@ethersphere/bee-js/dist/cjs/utils/cid.js

Javascript client for Bee

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.convertCidToReference = exports.convertReferenceToCid = exports.SWARM_FEED_CODEC = exports.SWARM_MANIFEST_CODEC = void 0;
const cafe_utility_1 = require("cafe-utility");
const typed_bytes_1 = require("./typed-bytes");
exports.SWARM_MANIFEST_CODEC = 0xfa;
exports.SWARM_FEED_CODEC = 0xfb;
const CODEC_TABLE = {
    [exports.SWARM_MANIFEST_CODEC]: 'manifest',
    [exports.SWARM_FEED_CODEC]: 'feed',
};
function convertReferenceToCid(reference, type) {
    reference = new typed_bytes_1.Reference(reference);
    const base32 = 'b';
    const version = new Uint8Array([1]);
    const codec = new Uint8Array([type === 'feed' ? exports.SWARM_FEED_CODEC : exports.SWARM_MANIFEST_CODEC]);
    const unknown = new Uint8Array([1]);
    const sha256 = new Uint8Array([27]);
    const size = new Uint8Array([32]);
    const header = cafe_utility_1.Binary.uint8ArrayToBase32(cafe_utility_1.Binary.concatBytes(version, codec, unknown, sha256, size)).replace(/\=+$/, '');
    const hash = reference.toBase32().replace(/\=+$/, '');
    return `${base32}${header}${hash}`.toLowerCase();
}
exports.convertReferenceToCid = convertReferenceToCid;
function convertCidToReference(cid) {
    const bytes = cafe_utility_1.Binary.base32ToUint8Array(cid.toUpperCase().slice(1));
    const codec = bytes[1];
    if (!CODEC_TABLE[codec]) {
        throw new Error('Unknown codec');
    }
    const reference = new typed_bytes_1.Reference(bytes.slice(-32));
    return {
        type: CODEC_TABLE[codec],
        reference,
    };
}
exports.convertCidToReference = convertCidToReference;