56 lines
1.3 KiB
JavaScript
56 lines
1.3 KiB
JavaScript
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// ECMAScript 2021
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// (or Vanilla JS)
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import { promises as fs } from "fs";
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// or let fs = require("fs").promises;
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import path from "path";
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// or let path = require("path");
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// a port of Go's filepath.Walk
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async function walk(pathname, walkFunc, _dirent) {
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let err;
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function pass(e) {
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return e;
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}
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// special case of the very first run
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if (!_dirent) {
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let _name = path.basename(path.resolve(pathname));
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_dirent = await fs.lstat(pathname).catch(pass);
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if (_dirent instanceof Error) {
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err = _dirent;
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} else {
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_dirent.name = _name;
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}
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}
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// run the user-supplied function and either skip, bail, or continue
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err = await walkFunc(err, pathname, _dirent).catch(pass);
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if (false === err) {
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return;
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}
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if (err instanceof Error) {
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throw err;
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}
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// "walk does not follow symbolic links"
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if (!_dirent.isDirectory()) {
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return;
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}
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let result = await fs.readdir(pathname, { withFileTypes: true }).catch(pass);
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if (result instanceof Error) {
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return walkFunc(result, pathname, _dirent);
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}
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for (let dirent of result) {
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await walk(path.join(pathname, dirent.name), walkFunc, dirent);
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}
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}
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walk("./", function (err, pathname, dirent) {
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if (dirent.name.startsWith(".")) {
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return Promise.resolve(false);
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}
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console.log(path.resolve(pathname));
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return Promise.resolve(true);
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});
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