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https://github.com/denoland/deno.git
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d47147fb6a
This commit moves "deno_std/node" in "ext/node" crate. The code is transpiled and snapshotted during the build process. During the first pass a minimal amount of work was done to create the snapshot, a lot of code in "ext/node" depends on presence of "Deno" global. This code will be gradually fixed in the follow up PRs to migrate it to import relevant APIs from "internal:" modules. Currently the code from snapshot is not used in any way, and all Node/npm compatibility still uses code from "https://deno.land/std/node" (or from the location specified by "DENO_NODE_COMPAT_URL"). This will also be handled in a follow up PRs. --------- Co-authored-by: crowlkats <crowlkats@toaxl.com> Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com> Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>
198 lines
5 KiB
TypeScript
198 lines
5 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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import {
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O_APPEND,
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O_CREAT,
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O_EXCL,
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O_RDWR,
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O_TRUNC,
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O_WRONLY,
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} from "internal:deno_node/polyfills/_fs/_fs_constants.ts";
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import { getOpenOptions } from "internal:deno_node/polyfills/_fs/_fs_common.ts";
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import { promisify } from "internal:deno_node/polyfills/internal/util.mjs";
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import { parseFileMode } from "internal:deno_node/polyfills/internal/validators.mjs";
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import { ERR_INVALID_ARG_TYPE } from "internal:deno_node/polyfills/internal/errors.ts";
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import { getValidatedPath } from "internal:deno_node/polyfills/internal/fs/utils.mjs";
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import type { Buffer } from "internal:deno_node/polyfills/buffer.ts";
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function existsSync(filePath: string | URL): boolean {
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try {
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Deno.lstatSync(filePath);
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return true;
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} catch (error) {
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if (error instanceof Deno.errors.NotFound) {
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return false;
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}
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throw error;
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}
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}
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const FLAGS_AX = O_APPEND | O_CREAT | O_WRONLY | O_EXCL;
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const FLAGS_AX_PLUS = O_APPEND | O_CREAT | O_RDWR | O_EXCL;
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const FLAGS_WX = O_TRUNC | O_CREAT | O_WRONLY | O_EXCL;
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const FLAGS_WX_PLUS = O_TRUNC | O_CREAT | O_RDWR | O_EXCL;
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export type openFlags =
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| "a"
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| "ax"
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| "a+"
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| "ax+"
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| "as"
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| "as+"
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| "r"
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| "r+"
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| "rs+"
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| "w"
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| "wx"
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| "w+"
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| "wx+"
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| number;
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type openCallback = (err: Error | null, fd: number) => void;
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function convertFlagAndModeToOptions(
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flag?: openFlags,
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mode?: number,
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): Deno.OpenOptions | undefined {
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if (!flag && !mode) return undefined;
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if (!flag && mode) return { mode };
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return { ...getOpenOptions(flag), mode };
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}
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export function open(path: string | Buffer | URL, callback: openCallback): void;
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export function open(
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path: string | Buffer | URL,
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flags: openFlags,
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callback: openCallback,
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): void;
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export function open(
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path: string | Buffer | URL,
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flags: openFlags,
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mode: number,
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callback: openCallback,
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): void;
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export function open(
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path: string | Buffer | URL,
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flags: openCallback | openFlags,
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mode?: openCallback | number,
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callback?: openCallback,
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) {
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if (flags === undefined) {
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throw new ERR_INVALID_ARG_TYPE(
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"flags or callback",
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["string", "function"],
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flags,
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);
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}
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path = getValidatedPath(path);
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if (arguments.length < 3) {
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// deno-lint-ignore no-explicit-any
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callback = flags as any;
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flags = "r";
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mode = 0o666;
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} else if (typeof mode === "function") {
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callback = mode;
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mode = 0o666;
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} else {
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mode = parseFileMode(mode, "mode", 0o666);
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}
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if (typeof callback !== "function") {
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throw new ERR_INVALID_ARG_TYPE(
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"callback",
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"function",
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callback,
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);
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}
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if (flags === undefined) {
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flags = "r";
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}
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if (
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existenceCheckRequired(flags as openFlags) &&
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existsSync(path as string)
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) {
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const err = new Error(`EEXIST: file already exists, open '${path}'`);
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(callback as (err: Error) => void)(err);
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} else {
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if (flags === "as" || flags === "as+") {
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let err: Error | null = null, res: number;
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try {
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res = openSync(path, flags, mode);
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} catch (error) {
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err = error instanceof Error ? error : new Error("[non-error thrown]");
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}
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if (err) {
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(callback as (err: Error) => void)(err);
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} else {
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callback(null, res!);
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}
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return;
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}
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Deno.open(
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path as string,
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convertFlagAndModeToOptions(flags as openFlags, mode),
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).then(
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(file) => callback!(null, file.rid),
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(err) => (callback as (err: Error) => void)(err),
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);
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}
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}
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export const openPromise = promisify(open) as (
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& ((path: string | Buffer | URL) => Promise<number>)
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& ((path: string | Buffer | URL, flags: openFlags) => Promise<number>)
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& ((path: string | Buffer | URL, mode?: number) => Promise<number>)
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& ((
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path: string | Buffer | URL,
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flags?: openFlags,
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mode?: number,
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) => Promise<number>)
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);
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export function openSync(path: string | Buffer | URL): number;
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export function openSync(
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path: string | Buffer | URL,
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flags?: openFlags,
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): number;
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export function openSync(path: string | Buffer | URL, mode?: number): number;
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export function openSync(
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path: string | Buffer | URL,
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flags?: openFlags,
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mode?: number,
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): number;
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export function openSync(
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path: string | Buffer | URL,
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flags?: openFlags,
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maybeMode?: number,
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) {
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const mode = parseFileMode(maybeMode, "mode", 0o666);
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path = getValidatedPath(path);
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if (flags === undefined) {
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flags = "r";
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}
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if (
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existenceCheckRequired(flags) &&
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existsSync(path as string)
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) {
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throw new Error(`EEXIST: file already exists, open '${path}'`);
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}
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return Deno.openSync(path as string, convertFlagAndModeToOptions(flags, mode))
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.rid;
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}
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function existenceCheckRequired(flags: openFlags | number) {
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return (
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(typeof flags === "string" &&
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["ax", "ax+", "wx", "wx+"].includes(flags)) ||
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(typeof flags === "number" && (
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((flags & FLAGS_AX) === FLAGS_AX) ||
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((flags & FLAGS_AX_PLUS) === FLAGS_AX_PLUS) ||
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((flags & FLAGS_WX) === FLAGS_WX) ||
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((flags & FLAGS_WX_PLUS) === FLAGS_WX_PLUS)
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))
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);
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}
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