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denoland-deno/ext/node/polyfills/internal/readline/callbacks.mjs

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3.9 KiB
JavaScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
"use strict";
import {
ERR_INVALID_ARG_VALUE,
ERR_INVALID_CURSOR_POS,
} from "ext:deno_node/internal/errors.ts";
import { validateFunction } from "ext:deno_node/internal/validators.mjs";
import { CSI } from "ext:deno_node/internal/readline/utils.mjs";
const {
kClearLine,
kClearScreenDown,
kClearToLineBeginning,
kClearToLineEnd,
} = CSI;
/**
* moves the cursor to the x and y coordinate on the given stream
*/
export function cursorTo(stream, x, y, callback) {
if (callback !== undefined) {
validateFunction(callback, "callback");
}
if (typeof y === "function") {
callback = y;
y = undefined;
}
if (Number.isNaN(x)) throw new ERR_INVALID_ARG_VALUE("x", x);
if (Number.isNaN(y)) throw new ERR_INVALID_ARG_VALUE("y", y);
if (stream == null || (typeof x !== "number" && typeof y !== "number")) {
if (typeof callback === "function") process.nextTick(callback, null);
return true;
}
if (typeof x !== "number") throw new ERR_INVALID_CURSOR_POS();
const data = typeof y !== "number" ? CSI`${x + 1}G` : CSI`${y + 1};${x + 1}H`;
return stream.write(data, callback);
}
/**
* moves the cursor relative to its current location
*/
export function moveCursor(stream, dx, dy, callback) {
if (callback !== undefined) {
validateFunction(callback, "callback");
}
if (stream == null || !(dx || dy)) {
if (typeof callback === "function") process.nextTick(callback, null);
return true;
}
let data = "";
if (dx < 0) {
data += CSI`${-dx}D`;
} else if (dx > 0) {
data += CSI`${dx}C`;
}
if (dy < 0) {
data += CSI`${-dy}A`;
} else if (dy > 0) {
data += CSI`${dy}B`;
}
return stream.write(data, callback);
}
/**
* clears the current line the cursor is on:
* -1 for left of the cursor
* +1 for right of the cursor
* 0 for the entire line
*/
export function clearLine(stream, dir, callback) {
if (callback !== undefined) {
validateFunction(callback, "callback");
}
if (stream === null || stream === undefined) {
if (typeof callback === "function") process.nextTick(callback, null);
return true;
}
const type = dir < 0
? kClearToLineBeginning
: dir > 0
? kClearToLineEnd
: kClearLine;
return stream.write(type, callback);
}
/**
* clears the screen from the current position of the cursor down
*/
export function clearScreenDown(stream, callback) {
if (callback !== undefined) {
validateFunction(callback, "callback");
}
if (stream === null || stream === undefined) {
if (typeof callback === "function") process.nextTick(callback, null);
return true;
}
return stream.write(kClearScreenDown, callback);
}