feat(node_compat): Add a write method to the FileHandle class (#19385)

## WHY 

ref: https://github.com/denoland/deno/issues/19165

The FileHandle class has many missing methods compared to node.

## WHAT


Add write method
This commit is contained in:
nasa 2023-06-08 23:47:12 +09:00 committed by GitHub
parent 262571e63e
commit caad79ef78
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2 changed files with 96 additions and 6 deletions

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@ -1,8 +1,7 @@
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { EventEmitter } from "ext:deno_node/events.ts";
import { Buffer } from "ext:deno_node/buffer.ts";
import { promises, read } from "ext:deno_node/fs.ts";
import type { Buffer } from "ext:deno_node/buffer.ts";
import { promises, read, write } from "ext:deno_node/fs.ts";
import {
BinaryOptionsArgument,
FileOptionsArgument,
@ -10,6 +9,11 @@ import {
TextOptionsArgument,
} from "ext:deno_node/_fs/_fs_common.ts";
interface WriteResult {
bytesWritten: number;
buffer: Buffer | string;
}
interface ReadResult {
bytesRead: number;
buffer: Buffer;
@ -69,6 +73,61 @@ export class FileHandle extends EventEmitter {
return promises.readFile(this, opt);
}
write(
buffer: Buffer,
offset: number,
length: number,
position: number,
): Promise<WriteResult>;
write(
str: string,
position: number,
encoding: string,
): Promise<WriteResult>;
write(
bufferOrStr: Buffer | string,
offsetOrPotition: number,
lengthOrEncoding: number | string,
position?: number,
): Promise<WriteResult> {
if (bufferOrStr instanceof Buffer) {
const buffer = bufferOrStr;
const offset = offsetOrPotition;
const length = lengthOrEncoding;
return new Promise((resolve, reject) => {
write(
this.fd,
buffer,
offset,
length,
position,
(err, bytesWritten, buffer) => {
if (err) reject(err);
else resolve({ buffer, bytesWritten });
},
);
});
} else {
const str = bufferOrStr;
const position = offsetOrPotition;
const encoding = lengthOrEncoding;
return new Promise((resolve, reject) => {
write(
this.fd,
str,
position,
encoding,
(err, bytesWritten, buffer) => {
if (err) reject(err);
else resolve({ buffer, bytesWritten });
},
);
});
}
}
close(): Promise<void> {
// Note that Deno.close is not async
return Promise.resolve(Deno.close(this.fd));