mirror of
https://github.com/denoland/deno.git
synced 2024-12-24 08:09:08 -05:00
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>
108 lines
3.2 KiB
TypeScript
108 lines
3.2 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
|
|
import {
|
|
BinaryOptionsArgument,
|
|
FileOptionsArgument,
|
|
getEncoding,
|
|
TextOptionsArgument,
|
|
} from "internal:deno_node/polyfills/_fs/_fs_common.ts";
|
|
import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
|
|
import { fromFileUrl } from "internal:deno_node/polyfills/path.ts";
|
|
import {
|
|
BinaryEncodings,
|
|
Encodings,
|
|
TextEncodings,
|
|
} from "internal:deno_node/polyfills/_utils.ts";
|
|
import { promisify } from "internal:deno_node/polyfills/internal/util.mjs";
|
|
|
|
function maybeDecode(data: Uint8Array, encoding: TextEncodings): string;
|
|
function maybeDecode(
|
|
data: Uint8Array,
|
|
encoding: BinaryEncodings | null,
|
|
): Buffer;
|
|
function maybeDecode(
|
|
data: Uint8Array,
|
|
encoding: Encodings | null,
|
|
): string | Buffer {
|
|
const buffer = Buffer.from(data.buffer, data.byteOffset, data.byteLength);
|
|
if (encoding && encoding !== "binary") return buffer.toString(encoding);
|
|
return buffer;
|
|
}
|
|
|
|
type TextCallback = (err: Error | null, data?: string) => void;
|
|
type BinaryCallback = (err: Error | null, data?: Buffer) => void;
|
|
type GenericCallback = (err: Error | null, data?: string | Buffer) => void;
|
|
type Callback = TextCallback | BinaryCallback | GenericCallback;
|
|
|
|
export function readFile(
|
|
path: string | URL,
|
|
options: TextOptionsArgument,
|
|
callback: TextCallback,
|
|
): void;
|
|
export function readFile(
|
|
path: string | URL,
|
|
options: BinaryOptionsArgument,
|
|
callback: BinaryCallback,
|
|
): void;
|
|
export function readFile(
|
|
path: string | URL,
|
|
options: null | undefined | FileOptionsArgument,
|
|
callback: BinaryCallback,
|
|
): void;
|
|
export function readFile(path: string | URL, callback: BinaryCallback): void;
|
|
export function readFile(
|
|
path: string | URL,
|
|
optOrCallback?: FileOptionsArgument | Callback | null | undefined,
|
|
callback?: Callback,
|
|
) {
|
|
path = path instanceof URL ? fromFileUrl(path) : path;
|
|
let cb: Callback | undefined;
|
|
if (typeof optOrCallback === "function") {
|
|
cb = optOrCallback;
|
|
} else {
|
|
cb = callback;
|
|
}
|
|
|
|
const encoding = getEncoding(optOrCallback);
|
|
|
|
const p = Deno.readFile(path);
|
|
|
|
if (cb) {
|
|
p.then((data: Uint8Array) => {
|
|
if (encoding && encoding !== "binary") {
|
|
const text = maybeDecode(data, encoding);
|
|
return (cb as TextCallback)(null, text);
|
|
}
|
|
const buffer = maybeDecode(data, encoding);
|
|
(cb as BinaryCallback)(null, buffer);
|
|
}, (err) => cb && cb(err));
|
|
}
|
|
}
|
|
|
|
export const readFilePromise = promisify(readFile) as (
|
|
& ((path: string | URL, opt: TextOptionsArgument) => Promise<string>)
|
|
& ((path: string | URL, opt?: BinaryOptionsArgument) => Promise<Buffer>)
|
|
& ((path: string | URL, opt?: FileOptionsArgument) => Promise<Buffer>)
|
|
);
|
|
|
|
export function readFileSync(
|
|
path: string | URL,
|
|
opt: TextOptionsArgument,
|
|
): string;
|
|
export function readFileSync(
|
|
path: string | URL,
|
|
opt?: BinaryOptionsArgument,
|
|
): Buffer;
|
|
export function readFileSync(
|
|
path: string | URL,
|
|
opt?: FileOptionsArgument,
|
|
): string | Buffer {
|
|
path = path instanceof URL ? fromFileUrl(path) : path;
|
|
const data = Deno.readFileSync(path);
|
|
const encoding = getEncoding(opt);
|
|
if (encoding && encoding !== "binary") {
|
|
const text = maybeDecode(data, encoding);
|
|
return text;
|
|
}
|
|
const buffer = maybeDecode(data, encoding);
|
|
return buffer;
|
|
}
|