pig-dam-core/dist/urn.js

Library that should be included in every Pig DAM project we build

"use strict";
/**
 * Date: 2019-07-13
 * Time: 13:42
 * @license MIT (see project's LICENSE file)
 *
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseUrn = exports.createUrn = void 0;
const shortid = require("shortid");
/**
 * Creates a urn either by <param>path</param> or by <param>parts</param>:
 *  - path: "urn:<path>:<nss>"
 *  - parts: "urn:<path[0]>:<path[2]>...<path[n-1]>:<nss>"
 */
function createUrn({ path, nss = shortid.generate() }) {
    return (Array.isArray(path))
        ? `urn:${path.join(":")}:${nss}`
        : `urn:${path}:${nss}`;
}
exports.createUrn = createUrn;
/**
 * Parses a urn and returns bits
 * @param urn - the whole urn
 * @param parts - optionally may specify the names of the parts in which case the
 *    result will be an object of values mapped to these part names.
 * @throws {Error}
 */
function parseUrn(urn, parts) {
    const match = urn.match(/^urn:(([\w_-]+):){1,}([\w_-]+)$/);
    if (match === null) {
        throw new Error(`invalid urn "${urn}"`);
    }
    else {
        const split = urn.split(":");
        if (parts === undefined) {
            return {
                nss: split[split.length - 1],
                parts: split.slice(1, split.length - 1)
            };
        }
        else {
            if (parts.length !== split.length - 2) {
                throw new Error(`parts=${JSON.stringify(parts)} is mismatched with urn ${urn}`);
            }
            return {
                nss: split[split.length - 1],
                parts: parts.reduce((result, part, index) => {
                    result[part] = split[index + 1];
                    return result;
                }, {})
            };
        }
    }
}
exports.parseUrn = parseUrn;