Anton's Digital Garden

TUI Choice Menu

1 min read

Ask a question once / until answered

do {
  $Choice = Read-Host -Prompt "=== Select from: ===`n0 blue`ny yellow`n"
  switch ($Choice) {
    0 {
      Write-Host -Object "Painting in blue"
      break
    } 
    "y" {
      Write-Host -Object "Painting in yellow"
      return
    }
    default {
      $Choice = $null
      Write-Host -Object "=== Invalid choice! ==="
      break
    }
  }
} while ($Choice -eq $null)

Ask a question repeatedly until canceled

while ($true) {
  $Choice = Read-Host -Prompt "=== Select from: ===`n0  Sleep`n9+ Shutdown in _s`nq  Quit`n"
  $n = -1 # Choice parsed to number
  switch ($Choice) {
    0 {
      Write-Host -Object "Falling asleep"
      break
    } 
    {<#isNumber#>[double]::TryParse($_,[ref]$n) -and <# >8 #>($n -gt 8)} {
      Write-Host -Object @("Shutdown in", [math]::floor($_), "seconds")
      break
    }
    "q" {
      Write-Host -Object "=== Quit ==="
      return
    }
    default {
      $Choice = $null
      Write-Host -Object "=== Invalid choice! ==="
      break
    }
  }
}

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Tags: Programm PowerShell - Learn PowerShell’s programming paradigms

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