/// <summary>
/// Applies a <see cref="SingleFile"/> to a <see cref="TemporaryDirectory"/>.
/// </summary>
/// <param name="step">The <see cref="Archive"/> to apply.</param>
/// <param name="localPath">The local path of the file.</param>
/// <param name="workingDir">The <see cref="TemporaryDirectory"/> to apply the changes to.</param>
/// <param name="handler">A callback object used when the the user needs to be informed about progress.</param>
/// <exception cref="IOException">A path specified in <paramref name="step"/> is illegal.</exception>
public static void Apply([NotNull] this SingleFile step, [NotNull] string localPath, [NotNull] TemporaryDirectory workingDir, [NotNull] ITaskHandler handler)
{
#region Sanity checks
if (step == null)
{
throw new ArgumentNullException(nameof(step));
}
if (string.IsNullOrEmpty(localPath))
{
throw new ArgumentNullException(nameof(localPath));
}
if (workingDir == null)
{
throw new ArgumentNullException(nameof(workingDir));
}
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
#endregion
// Use a copy of the original file because the source file is moved
using (var tempFile = new TemporaryFile("0install"))
{
// ReSharper disable once AccessToDisposedClosure
handler.RunTask(new SimpleTask(Resources.CopyFiles, () => File.Copy(localPath, tempFile, overwrite: true)));
step.Apply(tempFile, workingDir);
}
}
