/// <summary>
/// Internal function to get folders.
/// </summary>
/// <param name="folder">The folder.</param>
/// <param name="searchPattern">The search pattern.</param>
/// <param name="searchOption">The search option.</param>
/// <returns>An enumerable representing the folders.</returns>
private static IEnumerable<string> InternalGetFolders(AFolder folder, string searchPattern, SearchOption searchOption)
{
var folders = new List<string>();
var subFolders = folder.GetFolderNames();
foreach (var subFolder in subFolders)
{
if (Regex.IsMatch(subFolder, searchPattern))
folders.Add(subFolder);
if (searchOption != SearchOption.TopDirectoryOnly)
{
var subFolderFolders = EnumerateFolders(subFolder, searchPattern, SearchOption.AllDirectories);
foreach (var tmp in subFolderFolders)
{
if (Regex.IsMatch(tmp, searchPattern))
folders.Add(tmp);
}
}
}
return folders;
}
/// <summary>
/// Internal function to get file system entries.
/// </summary>
/// <param name="folder">The folder.</param>
/// <param name="searchPattern">The search pattern.</param>
/// <param name="searchOption">The search option.</param>
/// <returns>An enumerable representing the file system entries.</returns>
private static IEnumerable<string> InternalGetFileSystemEntries(AFolder folder, string searchPattern, SearchOption searchOption)
{
var filesAndFolders = new List<string>();
if (searchOption != SearchOption.SubDirectoriesOnly)
{
var topFiles = folder.GetFileNames();
foreach (var file in topFiles)
{
if (Regex.IsMatch(file, searchPattern))
filesAndFolders.Add(file);
}
var topFolders = folder.GetFileNames();
foreach (var topFolder in topFolders)
{
if (Regex.IsMatch(topFolder, searchPattern))
filesAndFolders.Add(topFolder);
}
}
var folders = folder.GetFolderNames();
foreach (var subFolder in folders)
{
if (Regex.IsMatch(subFolder, searchPattern))
filesAndFolders.Add(subFolder);
if (searchOption != SearchOption.TopDirectoryOnly)
{
var subFiles = EnumerateFileSystemEntries(subFolder, searchPattern, SearchOption.AllDirectories);
foreach (var file in subFiles)
{
if (Regex.IsMatch(file, searchPattern))
filesAndFolders.Add(file);
}
}
}
return filesAndFolders;
}