mirror of
https://github.com/denoland/std.git
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941 lines
21 KiB
TypeScript
941 lines
21 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// Documentation and interface for walk were adapted from Go
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// https://golang.org/pkg/path/filepath/#Walk
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// Copyright 2009 The Go Authors. All rights reserved. BSD license.
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import { join } from "@std/path/join";
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import { toPathString } from "./_to_path_string.ts";
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import {
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createWalkEntry,
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createWalkEntrySync,
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type WalkEntry,
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} from "./_create_walk_entry.ts";
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function include(
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path: string,
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exts?: string[],
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match?: RegExp[],
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skip?: RegExp[],
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): boolean {
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if (exts && !exts.some((ext): boolean => path.endsWith(ext))) {
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return false;
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}
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if (match && !match.some((pattern): boolean => !!path.match(pattern))) {
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return false;
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}
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if (skip && skip.some((pattern): boolean => !!path.match(pattern))) {
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return false;
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}
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return true;
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}
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/** Options for {@linkcode walk} and {@linkcode walkSync}. */
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export interface WalkOptions {
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/**
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* The maximum depth of the file tree to be walked recursively.
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*
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* @default {Infinity}
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*/
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maxDepth?: number;
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/**
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* Indicates whether file entries should be included or not.
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*
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* @default {true}
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*/
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includeFiles?: boolean;
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/**
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* Indicates whether directory entries should be included or not.
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*
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* @default {true}
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*/
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includeDirs?: boolean;
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/**
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* Indicates whether symlink entries should be included or not.
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* This option is meaningful only if `followSymlinks` is set to `false`.
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*
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* @default {true}
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*/
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includeSymlinks?: boolean;
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/**
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* Indicates whether symlinks should be resolved or not.
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*
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* @default {false}
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*/
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followSymlinks?: boolean;
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/**
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* Indicates whether the followed symlink's path should be canonicalized.
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* This option works only if `followSymlinks` is not `false`.
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*
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* @default {true}
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*/
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canonicalize?: boolean;
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/**
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* List of file extensions used to filter entries.
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* If specified, entries without the file extension specified by this option
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* are excluded.
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*
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* File extensions with or without a leading period are accepted.
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*
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* @default {[]}
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*/
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exts?: string[];
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/**
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* List of regular expression patterns used to filter entries.
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* If specified, entries that do not match the patterns specified by this
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* option are excluded.
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*/
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match?: RegExp[];
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/**
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* List of regular expression patterns used to filter entries.
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* If specified, entries matching the patterns specified by this option are
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* excluded.
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*/
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skip?: RegExp[];
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}
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export type { WalkEntry };
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/**
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* Recursively walks through a directory and yields information about each file
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* and directory encountered.
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*
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* The root path determines whether the file paths are relative or absolute.
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* The root directory is included in the yielded entries.
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*
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* Requires `--allow-read` permission.
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*
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* @see {@link https://docs.deno.com/runtime/manual/basics/permissions#file-system-access}
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* for more information on Deno's permissions system.
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*
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* @param root The root directory to start the walk from, as a string or URL.
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* @param options The options for the walk.
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* @throws {Deno.errors.NotFound} If the root directory does not exist.
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*
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* @returns An async iterable iterator that yields the walk entry objects.
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*
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* @example Basic usage
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── foo.ts
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk("."));
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* // [
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* // {
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* // path: ".",
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* // name: ".",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false
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* // },
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // {
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* // path: "foo.ts",
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* // name: "foo.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // ]
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* ```
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*
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* @example Maximum file depth
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*
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* Setting the `maxDepth` option to `1` will only include the root directory and
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* its immediate children.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── foo
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* └── bar.ts
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { maxDepth: 1 }));
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* // [
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* // {
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* // path: ".",
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* // name: ".",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false
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* // },
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // {
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* // path: "foo",
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* // name: "foo",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false
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* // },
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* // ]
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* ```
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*
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* @example Exclude files
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*
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* Setting the `includeFiles` option to `false` will exclude files.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── foo
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { includeFiles: false }));
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* // [
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* // {
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* // path: ".",
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* // name: ".",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false
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* // },
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* // {
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* // path: "foo",
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* // name: "foo",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false,
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* // },
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* // ]
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* ```
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*
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* @example Exclude directories
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*
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* Setting the `includeDirs` option to `false` will exclude directories.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── foo
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { includeDirs: false }));
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* // [
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // ]
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* ```
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*
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* @example Exclude symbolic links
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*
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* Setting the `includeSymlinks` option to `false` will exclude symbolic links.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* ├── foo
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* └── link -> script.ts (symbolic link)
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { includeSymlinks: false }));
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* // [
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* // {
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* // path: ".",
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* // name: ".",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false
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* // },
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // ]
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* ```
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*
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* @example Follow symbolic links
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*
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* Setting the `followSymlinks` option to `true` will follow symbolic links,
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* affecting the `path` property of the walk entry.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── link -> script.ts (symbolic link)
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { followSymlinks: true }));
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* // [
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* // {
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* // path: ".",
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* // name: ".",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false
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* // },
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // {
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* // path: "script.ts",
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* // name: "link",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: true
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* // },
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* // ]
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* ```
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*
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* @example Canonicalize symbolic links
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*
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* Setting the `canonicalize` option to `false` will canonicalize the path of
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* the followed symbolic link. Meaning, the `path` property of the walk entry
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* will be the path of the symbolic link itself.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── link -> script.ts (symbolic link)
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { followSymlinks: true, canonicalize: true }));
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* // [
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* // {
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* // path: ".",
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* // name: ".",
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* // isFile: false,
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* // isDirectory: true,
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* // isSymlink: false
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* // },
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // {
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* // path: "link",
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* // name: "link",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: true
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* // },
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* // ]
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* ```
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*
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* @example Filter by file extensions
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*
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* Setting the `exts` option to `[".ts"]` or `["ts"]` will only include entries
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* with the `.ts` file extension.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── foo.js
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { exts: [".ts"] }));
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* // [
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // ]
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* ```
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*
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* @example Filter by regular expressions
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*
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* Setting the `match` option to `[/.s/]` will only include entries with the
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* letter `s` in their name.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── README.md
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { match: [/s/] }));
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* // [
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* // {
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* // path: "script.ts",
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* // name: "script.ts",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // ]
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* ```
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*
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* @example Exclude by regular expressions
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*
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* Setting the `skip` option to `[/.s/]` will exclude entries with the letter
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* `s` in their name.
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*
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* File structure:
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* ```
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* folder
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* ├── script.ts
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* └── README.md
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* ```
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*
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* ```ts no-eval
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* import { walk } from "@std/fs/walk";
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*
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* await Array.fromAsync(walk(".", { skip: [/s/] }));
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* // [
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* // {
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* // path: "README.md",
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* // name: "README.md",
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* // isFile: true,
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* // isDirectory: false,
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* // isSymlink: false
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* // },
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* // ]
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* ```
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*/
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export async function* walk(
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root: string | URL,
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options?: WalkOptions,
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): AsyncIterableIterator<WalkEntry> {
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let {
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maxDepth = Infinity,
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includeFiles = true,
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includeDirs = true,
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includeSymlinks = true,
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followSymlinks = false,
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canonicalize = true,
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exts = undefined,
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match = undefined,
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skip = undefined,
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} = options ?? {};
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if (maxDepth < 0) {
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return;
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}
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root = toPathString(root);
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if (exts) {
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exts = exts.map((ext) => ext.startsWith(".") ? ext : `.${ext}`);
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}
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if (includeDirs && include(root, exts, match, skip)) {
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yield await createWalkEntry(root);
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}
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if (maxDepth < 1 || !include(root, undefined, undefined, skip)) {
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return;
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}
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for await (const entry of Deno.readDir(root)) {
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let path = join(root, entry.name);
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let { isSymlink, isDirectory } = entry;
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if (isSymlink) {
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if (!followSymlinks) {
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if (includeSymlinks && include(path, exts, match, skip)) {
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yield { path, ...entry };
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}
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continue;
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}
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const realPath = await Deno.realPath(path);
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if (canonicalize) {
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path = realPath;
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}
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// Caveat emptor: don't assume |path| is not a symlink. realpath()
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// resolves symlinks but another process can replace the file system
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// entity with a different type of entity before we call lstat().
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({ isSymlink, isDirectory } = await Deno.lstat(realPath));
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}
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|
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if (isSymlink || isDirectory) {
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yield* walk(path, {
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maxDepth: maxDepth - 1,
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includeFiles,
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includeDirs,
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|
includeSymlinks,
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|
followSymlinks,
|
|
exts,
|
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match,
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|
skip,
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});
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} else if (includeFiles && include(path, exts, match, skip)) {
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yield { path, ...entry };
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}
|
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}
|
|
}
|
|
|
|
/**
|
|
* Recursively walks through a directory and yields information about each file
|
|
* and directory encountered.
|
|
*
|
|
* The root path determines whether the file paths is relative or absolute.
|
|
* The root directory is included in the yielded entries.
|
|
*
|
|
* Requires `--allow-read` permission.
|
|
*
|
|
* @see {@link https://docs.deno.com/runtime/manual/basics/permissions#file-system-access}
|
|
* for more information on Deno's permissions system.
|
|
*
|
|
* @param root The root directory to start the walk from, as a string or URL.
|
|
* @param options The options for the walk.
|
|
*
|
|
* @returns A synchronous iterable iterator that yields the walk entry objects.
|
|
*
|
|
* @example Basic usage
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── foo.ts
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync("."));
|
|
* // [
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|
* // {
|
|
* // path: ".",
|
|
* // name: ".",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "script.ts",
|
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* // name: "script.ts",
|
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* // isFile: true,
|
|
* // isDirectory: false,
|
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* // isSymlink: false
|
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* // },
|
|
* // {
|
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* // path: "foo.ts",
|
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* // name: "foo.ts",
|
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* // isFile: true,
|
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* // isDirectory: false,
|
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* // isSymlink: false
|
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* // },
|
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* // ]
|
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* ```
|
|
*
|
|
* @example Maximum file depth
|
|
*
|
|
* Setting the `maxDepth` option to `1` will only include the root directory and
|
|
* its immediate children.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── foo
|
|
* └── bar.ts
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { maxDepth: 1 }));
|
|
* // [
|
|
* // {
|
|
* // path: ".",
|
|
* // name: ".",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "script.ts",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "foo",
|
|
* // name: "foo",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Exclude files
|
|
*
|
|
* Setting the `includeFiles` option to `false` will exclude files.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── foo
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { includeFiles: false }));
|
|
* // [
|
|
* // {
|
|
* // path: ".",
|
|
* // name: ".",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "foo",
|
|
* // name: "foo",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false,
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Exclude directories
|
|
*
|
|
* Setting the `includeDirs` option to `false` will exclude directories.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── foo
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { includeDirs: false }));
|
|
* // [
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "script.ts",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Exclude symbolic links
|
|
*
|
|
* Setting the `includeSymlinks` option to `false` will exclude symbolic links.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* ├── foo
|
|
* └── link -> script.ts (symbolic link)
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { includeSymlinks: false }));
|
|
* // [
|
|
* // {
|
|
* // path: ".",
|
|
* // name: ".",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "script.ts",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Follow symbolic links
|
|
*
|
|
* Setting the `followSymlinks` option to `true` will follow symbolic links,
|
|
* affecting the `path` property of the walk entry.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── link -> script.ts (symbolic link)
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { followSymlinks: true }));
|
|
* // [
|
|
* // {
|
|
* // path: ".",
|
|
* // name: ".",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "script.ts",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "link",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: true
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Canonicalize symbolic links
|
|
*
|
|
* Setting the `canonicalize` option to `false` will canonicalize the path of
|
|
* the followed symbolic link. Meaning, the `path` property of the walk entry
|
|
* will be the path of the symbolic link itself.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── link -> script.ts (symbolic link)
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { followSymlinks: true, canonicalize: true }));
|
|
* // [
|
|
* // {
|
|
* // path: ".",
|
|
* // name: ".",
|
|
* // isFile: false,
|
|
* // isDirectory: true,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "script.ts",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // {
|
|
* // path: "link",
|
|
* // name: "link",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: true
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Filter by file extensions
|
|
*
|
|
* Setting the `exts` option to `[".ts"]` or `["ts"]` will only include entries
|
|
* with the `.ts` file extension.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── foo.js
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { exts: [".ts"] }));
|
|
* // [
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "script.ts",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Filter by regular expressions
|
|
*
|
|
* Setting the `match` option to `[/.s/]` will only include entries with the
|
|
* letter `s` in their name.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── README.md
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { match: [/s/] }));
|
|
* // [
|
|
* // {
|
|
* // path: "script.ts",
|
|
* // name: "script.ts",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*
|
|
* @example Exclude by regular expressions
|
|
*
|
|
* Setting the `skip` option to `[/.s/]` will exclude entries with the letter
|
|
* `s` in their name.
|
|
*
|
|
* File structure:
|
|
* ```
|
|
* folder
|
|
* ├── script.ts
|
|
* └── README.md
|
|
* ```
|
|
*
|
|
* ```ts no-eval
|
|
* import { walkSync } from "@std/fs/walk";
|
|
*
|
|
* Array.from(walkSync(".", { skip: [/s/] }));
|
|
* // [
|
|
* // {
|
|
* // path: "README.md",
|
|
* // name: "README.md",
|
|
* // isFile: true,
|
|
* // isDirectory: false,
|
|
* // isSymlink: false
|
|
* // },
|
|
* // ]
|
|
* ```
|
|
*/
|
|
export function* walkSync(
|
|
root: string | URL,
|
|
options?: WalkOptions,
|
|
): IterableIterator<WalkEntry> {
|
|
let {
|
|
maxDepth = Infinity,
|
|
includeFiles = true,
|
|
includeDirs = true,
|
|
includeSymlinks = true,
|
|
followSymlinks = false,
|
|
canonicalize = true,
|
|
exts = undefined,
|
|
match = undefined,
|
|
skip = undefined,
|
|
} = options ?? {};
|
|
|
|
root = toPathString(root);
|
|
if (exts) {
|
|
exts = exts.map((ext) => ext.startsWith(".") ? ext : `.${ext}`);
|
|
}
|
|
if (maxDepth < 0) {
|
|
return;
|
|
}
|
|
if (includeDirs && include(root, exts, match, skip)) {
|
|
yield createWalkEntrySync(root);
|
|
}
|
|
if (maxDepth < 1 || !include(root, undefined, undefined, skip)) {
|
|
return;
|
|
}
|
|
const entries = Deno.readDirSync(root);
|
|
for (const entry of entries) {
|
|
let path = join(root, entry.name);
|
|
|
|
let { isSymlink, isDirectory } = entry;
|
|
|
|
if (isSymlink) {
|
|
if (!followSymlinks) {
|
|
if (includeSymlinks && include(path, exts, match, skip)) {
|
|
yield { path, ...entry };
|
|
}
|
|
continue;
|
|
}
|
|
const realPath = Deno.realPathSync(path);
|
|
if (canonicalize) {
|
|
path = realPath;
|
|
}
|
|
// Caveat emptor: don't assume |path| is not a symlink. realpath()
|
|
// resolves symlinks but another process can replace the file system
|
|
// entity with a different type of entity before we call lstat().
|
|
({ isSymlink, isDirectory } = Deno.lstatSync(realPath));
|
|
}
|
|
|
|
if (isSymlink || isDirectory) {
|
|
yield* walkSync(path, {
|
|
maxDepth: maxDepth - 1,
|
|
includeFiles,
|
|
includeDirs,
|
|
includeSymlinks,
|
|
followSymlinks,
|
|
exts,
|
|
match,
|
|
skip,
|
|
});
|
|
} else if (includeFiles && include(path, exts, match, skip)) {
|
|
yield { path, ...entry };
|
|
}
|
|
}
|
|
}
|