Nu HTML Checkerをローカルで使う方法 2分でできるセットアップ

curl -L -o ~/vnu/vnu.jar https://github.com/validator/validator/releases/download/latest/vnu.jar

Invoke-WebRequest -Uri "https://github.com/validator/validator/releases/download/latest/vnu.jar" -OutFile "$HOME\vnu\vnu.jar"

java -cp ~/vnu/vnu.jar nu.validator.servlet.Main 8888

Start-Process -NoNewWindow java -ArgumentList @("-cp", "$HOME\vnu\vnu.jar", "nu.validator.servlet.Main", 8888)

cat >> ~/.zshrc << 'EOF'
vnu() {
  # --install
  if [ "$1" = "--install" ]; then
    echo "installing..."
    mkdir -p ~/vnu
    curl -L -o ~/vnu/vnu.jar https://github.com/validator/validator/releases/download/latest/vnu.jar
    echo "✅ vnu is installed!"
    return

  elif [ ! -f ~/vnu/vnu.jar ]; then
    echo "❌ vnu is not installed."
    echo "Run 'vnu --install' to install vnu."
    return

  # --update
  elif [ "$1" = "--update" ]; then
    echo "updating..."
    curl -L -o ~/vnu/vnu.jar https://github.com/validator/validator/releases/download/latest/vnu.jar
    echo "✅ vnu is updated!"
    return

  # --stop
  elif [ "$1" = "--stop" ]; then
    if lsof -i :8888 > /dev/null 2>&1; then
      kill $(lsof -ti :8888)
      echo "💤 vnu is stopped"
    else
      echo "⚠️ vnu is not running"
    fi
    return
  fi

  # 起動中かチェック
  if lsof -i :8888 > /dev/null 2>&1; then
    echo "⚠️ vnu is already running"
    open http://localhost:8888/
    return
  fi

  # 起動
  echo "starting..."
  java -cp ~/vnu/vnu.jar nu.validator.servlet.Main 8888 &

  # 最大10秒待つ
  for i in $(seq 1 20); do
    if lsof -i :8888 > /dev/null 2>&1; then
      open http://localhost:8888/
      return
    fi
    sleep 0.5
  done
  echo "⚠️ vnu did not start within 10s"
}
EOF
source ~/.zshrc

Add-Content $PROFILE @'
function vnu {
  $jar = "$HOME\vnu\vnu.jar"
  $url = "https://github.com/validator/validator/releases/download/latest/vnu.jar"
  $port = 8888

  # --install
  if ($args[0] -eq "--install") {
    Write-Host "installing..."
    New-Item -ItemType Directory -Force -Path "$HOME\vnu" | Out-Null
    Invoke-WebRequest -Uri $url -OutFile $jar
    Write-Host "✅ vnu is installed!"
    return
  }

  # jarがない場合
  if (-not (Test-Path $jar)) {
    Write-Host "❌ vnu is not installed."
    Write-Host "Run 'vnu --install' to install vnu."
    return
  }

  # --update
  if ($args[0] -eq "--update") {
    Write-Host "updating..."
    Invoke-WebRequest -Uri $url -OutFile $jar
    Write-Host "✅ vnu is updated!"
    return
  }

  # --stop
  if ($args[0] -eq "--stop") {
    $listeners = Get-NetTCPConnection -State Listen -LocalPort $port -ErrorAction SilentlyContinue

    if ($listeners) {
      $pids = $listeners |
        Select-Object -ExpandProperty OwningProcess -Unique |
        Where-Object { $_ -notin 0, 4 }

      if ($pids) {
        foreach ($targetPid in $pids) {
          try {
            Stop-Process -Id $targetPid -ErrorAction Stop
            Write-Host "💤 stopped PID $targetPid"
          } catch {
            Write-Host "⚠️ failed to stop PID $targetPid ($($_.Exception.Message))"
          }
        }
        Write-Host "💤 vnu is stopped"
      } else {
        Write-Host "⚠️ no stoppable process found"
      }
    } else {
      Write-Host "⚠️ vnu is not running"
    }

    return
  }

  # 起動中かチェック
  $running = Get-NetTCPConnection -State Listen -LocalPort $port -ErrorAction SilentlyContinue
  if ($running) {
    Write-Host "⚠️ vnu is already running"
    Start-Process "http://localhost:$port/"
    return
  }

  # 起動
  Write-Host "starting..."
  Start-Process -NoNewWindow java -ArgumentList @(
    "-cp"
    $jar
    "nu.validator.servlet.Main"
    $port
  )

  # 最大10秒待つ
  $maxWait = 10
  $elapsed = 0

  while ($elapsed -lt $maxWait) {
    $started = Get-NetTCPConnection -State Listen -LocalPort $port -ErrorAction SilentlyContinue
    if ($started) {
      Start-Process "http://localhost:$port/"
      return
    }

    Start-Sleep -Milliseconds 500
    $elapsed += 0.5
  }

  Write-Host "⚠️ vnu did not start within ${maxWait}s"
}
'@

. $PROFILE