dart_console 0.1.0+2

A helper library for command-line applications that need more control over input/output than the standard library provides.

A Dart library for building console applications.

This library contains a variety of useful functions for console application development, including:

• Reading the current window dimensions (height, width)
• Reading and setting the cursor location
• Setting foreground and background colors
• Manipulating the console into "raw mode", which allows more advanced keyboard input processing than the default dart:io library.
• Reading keys and control sequences from the keyboard
• Writing aligned text to the screen

The library is being used to implement a Dart version of the Kilo text editor, and is sufficient for a reasonably complete set of usage, including readline-style CLI and basic text games.

The library assumes a VT-style terminal, as used by macOS and Linux. This package does not currently work on Windows.

Usage

A simple example for the dart_console package:

import 'package:dart_console/dart_console.dart';

main() {
  final console = Console();

  console.clearScreen();
  console.resetCursorPosition();

  console.writeAligned(
      'Console size is ${console.windowWidth} cols and ${console.windowHeight} rows.',
      TextAlignment.Center);
  console.writeLine();

  return 0;
}

More comprehensive demos of the Console class are included in the example/demo.dart and example/command_line.dart files.

Other Notes

dart_console uses the new FFI capabilities in Dart 2.5 and later. As of the time of writing (August 2019), this is not available in a stable release.

Features and bugs

Please file feature requests and bugs at the issue tracker.