private static async Task ServeDirectoryListingAsync(DirectoryInfo root, DirectoryInfo directory, HttpListenerResponse response)
{
StringBuilder listBuilder = new StringBuilder();
foreach (FileInfo file in directory.EnumerateFiles())
{
String target = directory.IsSameDirectory(root) ? file.Name
: Path.Combine(directory.Name, file.Name);
listBuilder.AppendFormat("<li><a href=\"{0}\">{1}</a></li>", target, file.Name);
}
foreach (DirectoryInfo subDirectory in directory.EnumerateDirectories())
{
String target = directory.IsSameDirectory(root) ? subDirectory.Name
: Path.Combine(directory.Name, subDirectory.Name);
listBuilder.AppendFormat("<li><a href=\"{0}\">{1}</a></li>", target, subDirectory.Name);
}
String htmlResponse = String.Format("<ul>{0}</ul>", listBuilder.ToString());
response.ContentType = "text/html";
response.ContentLength64 = htmlResponse.Length;
response.AddHeader("Date", DateTime.Now.ToString("r"));
response.StatusCode = (Int32)HttpStatusCode.OK; // Must be set before writing to OutputStream.
using (StreamWriter writer = new StreamWriter(response.OutputStream))
{
await writer.WriteAsync(htmlResponse).ConfigureAwait(false);
}
}
/// <summary>
/// Returns true when childFolder is a subfolder of parentFolder
/// </summary>
/// <param name="childFolder"></param>
/// <param name="parentFolder"></param>
/// <returns></returns>
public static bool IsChildFolder(DirectoryInfo childFolder, DirectoryInfo parentFolder)
{
if (childFolder.Parent == null)
return false;
childFolder = childFolder.Parent;
if (childFolder.IsSameDirectory(parentFolder))
return true;
return IsChildFolder(childFolder, parentFolder);
}