@helia/verified-fetch/dist/src/utils/resource-to-cache-key.js

A fetch-like API for obtaining verified & trustless IPFS content on the web

import { CID } from 'multiformats/cid';
import { parseURLString } from './parse-url-string.js';
/**
 * Takes a resource and returns a session cache key as an IPFS or IPNS path with
 * any trailing segments removed.
 *
 * E.g.
 *
 * - Qmfoo -> /ipfs/Qmfoo
 * - https://Qmfoo.ipfs.gateway.org -> ipfs://Qmfoo
 * - https://gateway.org/ipfs/Qmfoo -> ipfs://Qmfoo
 * - https://gateway.org/ipfs/Qmfoo/bar.txt -> ipfs://Qmfoo
 * - etc
 */
export function resourceToSessionCacheKey(url) {
    const cid = CID.asCID(url);
    if (cid != null) {
        return `ipfs://${cid}`;
    }
    try {
        return `ipfs://${CID.parse(url.toString())}`;
    }
    catch { }
    const { protocol, host } = parseURLString(url.toString());
    return `${protocol}//${host}`;
}
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