@xmcl/resource-manager/index.js

"use strict";
function __export(m) {
    for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];
}
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * The resource manager. Design to be able to use in both nodejs and browser environment.
 * @template T The type of the resource content. If you use this in node, it's probably `Buffer`. If you are in browser, it might be `string`. Just align this with your `ResourceSource`
 */
class ResourceManager {
    constructor(list = []) {
        this.list = list;
        this.cache = {};
    }
    get allResourcePacks() { return this.list.map((l) => l.info); }
    /**
     * Add a new resource source to the end of the resource list.
     */
    async addResourcePack(resourcePack) {
        let info;
        try {
            info = await resourcePack.info();
        }
        catch (_a) {
            info = { pack_format: -1, description: "" };
        }
        const domains = await resourcePack.domains();
        const wrapper = { info, source: resourcePack, domains };
        this.list.push(wrapper);
    }
    /**
     * Clear all cache
     */
    clearCache() { this.cache = {}; }
    /**
     * Clear all resource source and cache
     */
    clearAll() {
        this.cache = {};
        this.list.splice(0, this.list.length);
    }
    /**
     * Swap the resource source priority.
     */
    swap(first, second) {
        if (first >= this.list.length || first < 0 || second >= this.list.length || second < 0) {
            throw new Error("Illegal index");
        }
        const fir = this.list[first];
        this.list[first] = this.list[second];
        this.list[second] = fir;
        this.clearCache();
    }
    /**
     * Invalidate the resource cache
     */
    invalidate(location) {
        delete this.cache[`${location.domain}:${location.path}`];
    }
    /**
     * Load the resource in that location. This will walk through current resource source list to load the resource.
     * @param location The resource location
     * @param urlOnly If true, it will force return uri, else it will return the normal resource content
     */
    async load(location, urlOnly = false) {
        const cached = this.cache[`${location.domain}:${location.path}`];
        if (cached) {
            return cached;
        }
        for (const src of this.list) {
            const loaded = await src.source.load(location, urlOnly);
            if (!loaded) {
                continue;
            }
            this.putCache(loaded);
            return loaded;
        }
        return undefined;
    }
    putCache(res) {
        this.cache[`${res.location.domain}:${res.location.path}`] = res;
    }
}
exports.ResourceManager = ResourceManager;
__export(require("./model-loader"));
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