mirror of
https://github.com/denoland/deno.git
synced 2024-12-22 15:24:46 -05:00
323 lines
14 KiB
TypeScript
323 lines
14 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
// Copyright DefinitelyTyped contributors. All rights reserved. MIT license.
|
|
// deno-lint-ignore-file no-explicit-any
|
|
|
|
import * as stream from "ext:deno_node/_stream.d.ts";
|
|
import * as promises from "node:fs/promises";
|
|
|
|
import { Buffer } from "node:buffer";
|
|
import { BufferEncoding, ErrnoException } from "ext:deno_node/_global.d.ts";
|
|
|
|
type PathLike = string | Buffer | URL;
|
|
|
|
/**
|
|
* Instances of `fs.ReadStream` are created and returned using the {@link createReadStream} function.
|
|
* @since v0.1.93
|
|
*/
|
|
export class ReadStream extends stream.Readable {
|
|
close(callback?: (err?: ErrnoException | null) => void): void;
|
|
/**
|
|
* The number of bytes that have been read so far.
|
|
* @since v6.4.0
|
|
*/
|
|
bytesRead: number;
|
|
/**
|
|
* The path to the file the stream is reading from as specified in the first
|
|
* argument to `fs.createReadStream()`. If `path` is passed as a string, then`readStream.path` will be a string. If `path` is passed as a `Buffer`, then`readStream.path` will be a
|
|
* `Buffer`. If `fd` is specified, then`readStream.path` will be `undefined`.
|
|
* @since v0.1.93
|
|
*/
|
|
path: string | Buffer;
|
|
/**
|
|
* This property is `true` if the underlying file has not been opened yet,
|
|
* i.e. before the `'ready'` event is emitted.
|
|
* @since v11.2.0, v10.16.0
|
|
*/
|
|
pending: boolean;
|
|
/**
|
|
* events.EventEmitter
|
|
* 1. open
|
|
* 2. close
|
|
* 3. ready
|
|
*/
|
|
addListener(event: "close", listener: () => void): this;
|
|
addListener(event: "data", listener: (chunk: Buffer | string) => void): this;
|
|
addListener(event: "end", listener: () => void): this;
|
|
addListener(event: "error", listener: (err: Error) => void): this;
|
|
addListener(event: "open", listener: (fd: number) => void): this;
|
|
addListener(event: "pause", listener: () => void): this;
|
|
addListener(event: "readable", listener: () => void): this;
|
|
addListener(event: "ready", listener: () => void): this;
|
|
addListener(event: "resume", listener: () => void): this;
|
|
addListener(event: string | symbol, listener: (...args: any[]) => void): this;
|
|
on(event: "close", listener: () => void): this;
|
|
on(event: "data", listener: (chunk: Buffer | string) => void): this;
|
|
on(event: "end", listener: () => void): this;
|
|
on(event: "error", listener: (err: Error) => void): this;
|
|
on(event: "open", listener: (fd: number) => void): this;
|
|
on(event: "pause", listener: () => void): this;
|
|
on(event: "readable", listener: () => void): this;
|
|
on(event: "ready", listener: () => void): this;
|
|
on(event: "resume", listener: () => void): this;
|
|
on(event: string | symbol, listener: (...args: any[]) => void): this;
|
|
once(event: "close", listener: () => void): this;
|
|
once(event: "data", listener: (chunk: Buffer | string) => void): this;
|
|
once(event: "end", listener: () => void): this;
|
|
once(event: "error", listener: (err: Error) => void): this;
|
|
once(event: "open", listener: (fd: number) => void): this;
|
|
once(event: "pause", listener: () => void): this;
|
|
once(event: "readable", listener: () => void): this;
|
|
once(event: "ready", listener: () => void): this;
|
|
once(event: "resume", listener: () => void): this;
|
|
once(event: string | symbol, listener: (...args: any[]) => void): this;
|
|
prependListener(event: "close", listener: () => void): this;
|
|
prependListener(
|
|
event: "data",
|
|
listener: (chunk: Buffer | string) => void,
|
|
): this;
|
|
prependListener(event: "end", listener: () => void): this;
|
|
prependListener(event: "error", listener: (err: Error) => void): this;
|
|
prependListener(event: "open", listener: (fd: number) => void): this;
|
|
prependListener(event: "pause", listener: () => void): this;
|
|
prependListener(event: "readable", listener: () => void): this;
|
|
prependListener(event: "ready", listener: () => void): this;
|
|
prependListener(event: "resume", listener: () => void): this;
|
|
prependListener(
|
|
event: string | symbol,
|
|
listener: (...args: any[]) => void,
|
|
): this;
|
|
prependOnceListener(event: "close", listener: () => void): this;
|
|
prependOnceListener(
|
|
event: "data",
|
|
listener: (chunk: Buffer | string) => void,
|
|
): this;
|
|
prependOnceListener(event: "end", listener: () => void): this;
|
|
prependOnceListener(event: "error", listener: (err: Error) => void): this;
|
|
prependOnceListener(event: "open", listener: (fd: number) => void): this;
|
|
prependOnceListener(event: "pause", listener: () => void): this;
|
|
prependOnceListener(event: "readable", listener: () => void): this;
|
|
prependOnceListener(event: "ready", listener: () => void): this;
|
|
prependOnceListener(event: "resume", listener: () => void): this;
|
|
prependOnceListener(
|
|
event: string | symbol,
|
|
listener: (...args: any[]) => void,
|
|
): this;
|
|
}
|
|
/**
|
|
* * Extends `stream.Writable`
|
|
*
|
|
* Instances of `fs.WriteStream` are created and returned using the {@link createWriteStream} function.
|
|
* @since v0.1.93
|
|
*/
|
|
export class WriteStream extends stream.Writable {
|
|
/**
|
|
* Closes `writeStream`. Optionally accepts a
|
|
* callback that will be executed once the `writeStream`is closed.
|
|
* @since v0.9.4
|
|
*/
|
|
close(callback?: (err?: ErrnoException | null) => void): void;
|
|
/**
|
|
* The number of bytes written so far. Does not include data that is still queued
|
|
* for writing.
|
|
* @since v0.4.7
|
|
*/
|
|
bytesWritten: number;
|
|
/**
|
|
* The path to the file the stream is writing to as specified in the first
|
|
* argument to {@link createWriteStream}. If `path` is passed as a string, then`writeStream.path` will be a string. If `path` is passed as a `Buffer`, then`writeStream.path` will be a
|
|
* `Buffer`.
|
|
* @since v0.1.93
|
|
*/
|
|
path: string | Buffer;
|
|
/**
|
|
* This property is `true` if the underlying file has not been opened yet,
|
|
* i.e. before the `'ready'` event is emitted.
|
|
* @since v11.2.0
|
|
*/
|
|
pending: boolean;
|
|
/**
|
|
* events.EventEmitter
|
|
* 1. open
|
|
* 2. close
|
|
* 3. ready
|
|
*/
|
|
addListener(event: "close", listener: () => void): this;
|
|
addListener(event: "drain", listener: () => void): this;
|
|
addListener(event: "error", listener: (err: Error) => void): this;
|
|
addListener(event: "finish", listener: () => void): this;
|
|
addListener(event: "open", listener: (fd: number) => void): this;
|
|
addListener(event: "pipe", listener: (src: stream.Readable) => void): this;
|
|
addListener(event: "ready", listener: () => void): this;
|
|
addListener(event: "unpipe", listener: (src: stream.Readable) => void): this;
|
|
addListener(event: string | symbol, listener: (...args: any[]) => void): this;
|
|
on(event: "close", listener: () => void): this;
|
|
on(event: "drain", listener: () => void): this;
|
|
on(event: "error", listener: (err: Error) => void): this;
|
|
on(event: "finish", listener: () => void): this;
|
|
on(event: "open", listener: (fd: number) => void): this;
|
|
on(event: "pipe", listener: (src: stream.Readable) => void): this;
|
|
on(event: "ready", listener: () => void): this;
|
|
on(event: "unpipe", listener: (src: stream.Readable) => void): this;
|
|
on(event: string | symbol, listener: (...args: any[]) => void): this;
|
|
once(event: "close", listener: () => void): this;
|
|
once(event: "drain", listener: () => void): this;
|
|
once(event: "error", listener: (err: Error) => void): this;
|
|
once(event: "finish", listener: () => void): this;
|
|
once(event: "open", listener: (fd: number) => void): this;
|
|
once(event: "pipe", listener: (src: stream.Readable) => void): this;
|
|
once(event: "ready", listener: () => void): this;
|
|
once(event: "unpipe", listener: (src: stream.Readable) => void): this;
|
|
once(event: string | symbol, listener: (...args: any[]) => void): this;
|
|
prependListener(event: "close", listener: () => void): this;
|
|
prependListener(event: "drain", listener: () => void): this;
|
|
prependListener(event: "error", listener: (err: Error) => void): this;
|
|
prependListener(event: "finish", listener: () => void): this;
|
|
prependListener(event: "open", listener: (fd: number) => void): this;
|
|
prependListener(
|
|
event: "pipe",
|
|
listener: (src: stream.Readable) => void,
|
|
): this;
|
|
prependListener(event: "ready", listener: () => void): this;
|
|
prependListener(
|
|
event: "unpipe",
|
|
listener: (src: stream.Readable) => void,
|
|
): this;
|
|
prependListener(
|
|
event: string | symbol,
|
|
listener: (...args: any[]) => void,
|
|
): this;
|
|
prependOnceListener(event: "close", listener: () => void): this;
|
|
prependOnceListener(event: "drain", listener: () => void): this;
|
|
prependOnceListener(event: "error", listener: (err: Error) => void): this;
|
|
prependOnceListener(event: "finish", listener: () => void): this;
|
|
prependOnceListener(event: "open", listener: (fd: number) => void): this;
|
|
prependOnceListener(
|
|
event: "pipe",
|
|
listener: (src: stream.Readable) => void,
|
|
): this;
|
|
prependOnceListener(event: "ready", listener: () => void): this;
|
|
prependOnceListener(
|
|
event: "unpipe",
|
|
listener: (src: stream.Readable) => void,
|
|
): this;
|
|
prependOnceListener(
|
|
event: string | symbol,
|
|
listener: (...args: any[]) => void,
|
|
): this;
|
|
}
|
|
interface StreamOptions {
|
|
flags?: string | undefined;
|
|
encoding?: BufferEncoding | undefined;
|
|
// @ts-ignore promises.FileHandle is not implemented
|
|
fd?: number | promises.FileHandle | undefined;
|
|
mode?: number | undefined;
|
|
autoClose?: boolean | undefined;
|
|
/**
|
|
* @default false
|
|
*/
|
|
emitClose?: boolean | undefined;
|
|
start?: number | undefined;
|
|
highWaterMark?: number | undefined;
|
|
}
|
|
interface ReadStreamOptions extends StreamOptions {
|
|
end?: number | undefined;
|
|
}
|
|
/**
|
|
* Unlike the 16 kb default `highWaterMark` for a `stream.Readable`, the stream
|
|
* returned by this method has a default `highWaterMark` of 64 kb.
|
|
*
|
|
* `options` can include `start` and `end` values to read a range of bytes from
|
|
* the file instead of the entire file. Both `start` and `end` are inclusive and
|
|
* start counting at 0, allowed values are in the
|
|
* \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. If `fd` is specified and `start` is
|
|
* omitted or `undefined`, `fs.createReadStream()` reads sequentially from the
|
|
* current file position. The `encoding` can be any one of those accepted by `Buffer`.
|
|
*
|
|
* If `fd` is specified, `ReadStream` will ignore the `path` argument and will use
|
|
* the specified file descriptor. This means that no `'open'` event will be
|
|
* emitted. `fd` should be blocking; non-blocking `fd`s should be passed to `net.Socket`.
|
|
*
|
|
* If `fd` points to a character device that only supports blocking reads
|
|
* (such as keyboard or sound card), read operations do not finish until data is
|
|
* available. This can prevent the process from exiting and the stream from
|
|
* closing naturally.
|
|
*
|
|
* By default, the stream will emit a `'close'` event after it has been
|
|
* destroyed. Set the `emitClose` option to `false` to change this behavior.
|
|
*
|
|
* By providing the `fs` option, it is possible to override the corresponding `fs`implementations for `open`, `read`, and `close`. When providing the `fs` option,
|
|
* an override for `read` is required. If no `fd` is provided, an override for`open` is also required. If `autoClose` is `true`, an override for `close` is
|
|
* also required.
|
|
*
|
|
* ```js
|
|
* import { createReadStream } from "ext:deno_node/internal/fs/fs";
|
|
*
|
|
* // Create a stream from some character device.
|
|
* const stream = createReadStream('/dev/input/event0');
|
|
* setTimeout(() => {
|
|
* stream.close(); // This may not close the stream.
|
|
* // Artificially marking end-of-stream, as if the underlying resource had
|
|
* // indicated end-of-file by itself, allows the stream to close.
|
|
* // This does not cancel pending read operations, and if there is such an
|
|
* // operation, the process may still not be able to exit successfully
|
|
* // until it finishes.
|
|
* stream.push(null);
|
|
* stream.read(0);
|
|
* }, 100);
|
|
* ```
|
|
*
|
|
* If `autoClose` is false, then the file descriptor won't be closed, even if
|
|
* there's an error. It is the application's responsibility to close it and make
|
|
* sure there's no file descriptor leak. If `autoClose` is set to true (default
|
|
* behavior), on `'error'` or `'end'` the file descriptor will be closed
|
|
* automatically.
|
|
*
|
|
* `mode` sets the file mode (permission and sticky bits), but only if the
|
|
* file was created.
|
|
*
|
|
* An example to read the last 10 bytes of a file which is 100 bytes long:
|
|
*
|
|
* ```js
|
|
* import { createReadStream } from "ext:deno_node/internal/fs/fs";
|
|
*
|
|
* createReadStream('sample.txt', { start: 90, end: 99 });
|
|
* ```
|
|
*
|
|
* If `options` is a string, then it specifies the encoding.
|
|
* @since v0.1.31
|
|
*/
|
|
export function createReadStream(
|
|
path: PathLike,
|
|
options?: BufferEncoding | ReadStreamOptions,
|
|
): ReadStream;
|
|
/**
|
|
* `options` may also include a `start` option to allow writing data at some
|
|
* position past the beginning of the file, allowed values are in the
|
|
* \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. Modifying a file rather than
|
|
* replacing it may require the `flags` option to be set to `r+` rather than the
|
|
* default `w`. The `encoding` can be any one of those accepted by `Buffer`.
|
|
*
|
|
* If `autoClose` is set to true (default behavior) on `'error'` or `'finish'`the file descriptor will be closed automatically. If `autoClose` is false,
|
|
* then the file descriptor won't be closed, even if there's an error.
|
|
* It is the application's responsibility to close it and make sure there's no
|
|
* file descriptor leak.
|
|
*
|
|
* By default, the stream will emit a `'close'` event after it has been
|
|
* destroyed. Set the `emitClose` option to `false` to change this behavior.
|
|
*
|
|
* By providing the `fs` option it is possible to override the corresponding `fs`implementations for `open`, `write`, `writev` and `close`. Overriding `write()`without `writev()` can reduce
|
|
* performance as some optimizations (`_writev()`)
|
|
* will be disabled. When providing the `fs` option, overrides for at least one of`write` and `writev` are required. If no `fd` option is supplied, an override
|
|
* for `open` is also required. If `autoClose` is `true`, an override for `close`is also required.
|
|
*
|
|
* Like `fs.ReadStream`, if `fd` is specified, `fs.WriteStream` will ignore the`path` argument and will use the specified file descriptor. This means that no`'open'` event will be
|
|
* emitted. `fd` should be blocking; non-blocking `fd`s
|
|
* should be passed to `net.Socket`.
|
|
*
|
|
* If `options` is a string, then it specifies the encoding.
|
|
* @since v0.1.31
|
|
*/
|
|
export function createWriteStream(
|
|
path: PathLike,
|
|
options?: BufferEncoding | StreamOptions,
|
|
): WriteStream;
|