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99 lines
2.3 KiB
JavaScript
99 lines
2.3 KiB
JavaScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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import { core, primordials } from "ext:core/mod.js";
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const {
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Error,
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} = primordials;
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const {
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isTerminal,
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} = core;
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import { ERR_INVALID_FD } from "ext:deno_node/internal/errors.ts";
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import { LibuvStreamWrap } from "ext:deno_node/internal_binding/stream_wrap.ts";
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import { providerType } from "ext:deno_node/internal_binding/async_wrap.ts";
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import { Socket } from "node:net";
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import { setReadStream } from "ext:deno_node/_process/streams.mjs";
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// Returns true when the given numeric fd is associated with a TTY and false otherwise.
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function isatty(fd) {
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if (typeof fd !== "number") {
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return false;
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}
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try {
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/**
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* TODO: Treat `fd` as real file descriptors. Currently, `rid` 0, 1, 2
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* correspond to `fd` 0, 1, 2 (stdin, stdout, stderr). This may change in
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* the future.
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*/
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return isTerminal(fd);
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} catch (_) {
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return false;
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}
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}
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class TTY extends LibuvStreamWrap {
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constructor(handle) {
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super(providerType.TTYWRAP, handle);
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}
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}
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export class ReadStream extends Socket {
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constructor(fd, options) {
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if (fd >> 0 !== fd || fd < 0) {
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throw new ERR_INVALID_FD(fd);
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}
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// We only support `stdin`.
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if (fd != 0) throw new Error("Only fd 0 is supported.");
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const tty = new TTY(Deno.stdin);
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super({
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readableHighWaterMark: 0,
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handle: tty,
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manualStart: true,
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...options,
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});
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this.isRaw = false;
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this.isTTY = true;
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}
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setRawMode(flag) {
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flag = !!flag;
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this._handle.setRaw(flag);
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this.isRaw = flag;
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return this;
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}
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}
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setReadStream(ReadStream);
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export class WriteStream extends Socket {
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constructor(fd) {
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if (fd >> 0 !== fd || fd < 0) {
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throw new ERR_INVALID_FD(fd);
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}
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// We only support `stdin`, `stdout` and `stderr`.
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if (fd > 2) throw new Error("Only fd 0, 1 and 2 are supported.");
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const tty = new TTY(
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fd === 0 ? Deno.stdin : fd === 1 ? Deno.stdout : Deno.stderr,
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);
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super({
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readableHighWaterMark: 0,
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handle: tty,
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manualStart: true,
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});
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const { columns, rows } = Deno.consoleSize();
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this.columns = columns;
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this.rows = rows;
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this.isTTY = true;
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}
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}
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export { isatty };
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export default { isatty, WriteStream, ReadStream };
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