51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
import { opendir, readFile } from 'fs/promises';
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//import canvas from 'canvas';
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//import CanvasRenderer from '../renderer-canvas.js';
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import * as util from '../util.js';
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/*
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export class NodeCanvasRenderer extends CanvasRenderer {
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static make_canvas(w, h) {
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return canvas.createCanvas(w, h);
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}
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}
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*/
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export class LocalDirectorySource extends util.FileSource {
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constructor(root) {
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super();
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this.root = root;
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this.files = {};
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this._loaded_promise = this._scan_dir('/');
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}
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async _scan_dir(path) {
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let dir = await opendir(this.root + path);
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for await (let dirent of dir) {
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if (dirent.isDirectory()) {
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await this._scan_dir(path + dirent.name + '/');
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}
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else {
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let filepath = path + dirent.name;
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this.files[filepath.toLowerCase()] = filepath;
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if (this.files.size > 2000)
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throw `way, way too many files in local directory source ${this.root}`;
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}
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}
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}
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async get(path) {
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let realpath = this.files[path.toLowerCase()];
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if (realpath) {
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return (await readFile(this.root + realpath)).buffer;
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}
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else {
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throw new Error(`No such file: ${path}`);
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}
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}
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}
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