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27 lines
758 B
TypeScript
27 lines
758 B
TypeScript
/** https://docs.ipfs.tech/how-to/address-ipfs-on-web/#path-gateway */
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const IPFS_PATH_REGEX = /^\/ipfs\/([^/]+)/;
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/** https://docs.ipfs.tech/how-to/address-ipfs-on-web/#subdomain-gateway */
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const IPFS_HOST_REGEX = /^([^/]+)\.ipfs\./;
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/** Get IPFS CID out of a path. */
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function cidFromPath(path: string) {
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return path.match(IPFS_PATH_REGEX)?.[1];
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}
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/** Get IPFS CID out of a host. */
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function cidFromHost(host: string) {
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return host.match(IPFS_HOST_REGEX)?.[1];
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}
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/** Get IPFS CID out of a URL. */
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function cidFromUrl({ protocol, hostname, pathname }: URL) {
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switch (protocol) {
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case 'ipfs:':
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return hostname;
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case 'http:':
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case 'https:':
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return cidFromPath(pathname) || cidFromHost(hostname);
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}
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}
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export { cidFromUrl };
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