CLI Utilities

uni provides utilities for building command-line applications with styled output, progress indicators, and command launching.

Overview

Component	Description
Terminal Styling	Colorful terminal output with Tint
Progress Indicators	Progress bars and spinners
Command Launcher	Type-safe CLI argument parsing

Quick Start

Colored Output

import wvlet.uni.cli.Tint

println(Tint.green("Success!"))
println(Tint.red.bold("Error!"))
println(Tint.yellow.bgBlue("Warning"))

Progress Bar

import wvlet.uni.cli.ProgressBar

val bar = ProgressBar(total = 100).start()
for i <- 1 to 100 do
  Thread.sleep(50)
  bar.increment()
bar.finish()

Command Launcher

import wvlet.uni.cli.launcher.*

case class MyApp(
  @option(prefix = "-n,--name", description = "User name")
  name: String = "world",
  @option(prefix = "-v,--verbose", description = "Enable verbose output")
  verbose: Boolean = false
)

// Parse command-line arguments
val app = Launcher.execute[MyApp](args)
if app.verbose then println(s"Running with name: ${app.name}")
println(s"Hello, ${app.name}!")

Features

• Cross-Platform - Works on JVM and Scala Native
• Automatic Detection - Detects terminal capabilities
• Fluent API - Method chaining for styling
• Type-Safe - Compile-time argument validation

Package

import wvlet.uni.cli.*
import wvlet.uni.cli.launcher.*