/// <summary>
/// Gets the filtered file system entries.
/// </summary>
/// <param name="directoryService">The directory service.</param>
/// <param name="path">The path.</param>
/// <param name="fileSystem">The file system.</param>
/// <param name="appHost">The application host.</param>
/// <param name="logger">The logger.</param>
/// <param name="args">The args.</param>
/// <param name="flattenFolderDepth">The flatten folder depth.</param>
/// <param name="resolveShortcuts">if set to <c>true</c> [resolve shortcuts].</param>
/// <returns>Dictionary{System.StringFileSystemInfo}.</returns>
/// <exception cref="ArgumentNullException"><paramref name="path" /> is <c>null</c> or empty.</exception>
public static FileSystemMetadata[] GetFilteredFileSystemEntries(
IDirectoryService directoryService,
string path,
IFileSystem fileSystem,
IServerApplicationHost appHost,
ILogger logger,
ItemResolveArgs args,
int flattenFolderDepth = 0,
bool resolveShortcuts = true)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
if (args == null)
{
throw new ArgumentNullException(nameof(args));
}
var entries = directoryService.GetFileSystemEntries(path);
if (!resolveShortcuts && flattenFolderDepth == 0)
{
return(entries);
}
var dict = new Dictionary <string, FileSystemMetadata>(StringComparer.OrdinalIgnoreCase);
foreach (var entry in entries)
{
var isDirectory = entry.IsDirectory;
var fullName = entry.FullName;
if (resolveShortcuts && fileSystem.IsShortcut(fullName))
{
try
{
var newPath = appHost.ExpandVirtualPath(fileSystem.ResolveShortcut(fullName));
if (string.IsNullOrEmpty(newPath))
{
// invalid shortcut - could be old or target could just be unavailable
logger.LogWarning("Encountered invalid shortcut: {Path}", fullName);
continue;
}
// Don't check if it exists here because that could return false for network shares.
var data = fileSystem.GetDirectoryInfo(newPath);
// add to our physical locations
args.AddAdditionalLocation(newPath);
dict[newPath] = data;
}
catch (Exception ex)
{
logger.LogError(ex, "Error resolving shortcut from {Path}", fullName);
}
}
else if (flattenFolderDepth > 0 && isDirectory)
{
foreach (var child in GetFilteredFileSystemEntries(directoryService, fullName, fileSystem, appHost, logger, args, flattenFolderDepth: flattenFolderDepth - 1, resolveShortcuts: resolveShortcuts))
{
dict[child.FullName] = child;
}
}
else
{
dict[fullName] = entry;
}
}
var returnResult = new FileSystemMetadata[dict.Count];
var index = 0;
var values = dict.Values;
foreach (var value in values)
{
returnResult[index] = value;
index++;
}
return(returnResult);
}