// Copyright 2018-2023 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. "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); }