private IEnumerable <FileSystemInfo> VisitFiles(string root)
{
foreach (var file in Directory.EnumerateFiles(root))
{
var fileInfo = new FileInfo(file);
var fileEventArgs = new FileSystemElementEventArgs <FileInfo> {
FileSystemElement = fileInfo
};
OnEvent(FileFound, fileEventArgs);
if (fileEventArgs.ActionType == ActionType.StopSearch)
{
yield break;
}
if (fileEventArgs.ActionType != ActionType.ExcludeElement && _filter == null || _filter(fileInfo))
{
var filteredFileEventArgs = new FilteredFileSystemElementEventArgs <FileInfo> {
FileSystemElement = fileInfo
};
OnEvent(FilteredFileFound, filteredFileEventArgs);
if (filteredFileEventArgs.ActionType == ActionType.StopSearch)
{
yield break;
}
if (filteredFileEventArgs.ActionType != ActionType.ExcludeElement)
{
yield return(fileInfo);
}
}
}
}
private IEnumerable <FileSystemInfo> VisitDirectory(string root)
{
foreach (var file in VisitFiles(root))
{
yield return(file);
}
foreach (var subDirectory in Directory.EnumerateDirectories(root))
{
var directoryInfo = new DirectoryInfo(subDirectory);
var directoryEventArgs = new FileSystemElementEventArgs <DirectoryInfo> {
FileSystemElement = directoryInfo
};
OnEvent(DirectoryFound, directoryEventArgs);
if (directoryEventArgs.ActionType == ActionType.StopSearch)
{
yield break;
}
if (directoryEventArgs.ActionType != ActionType.ExcludeElement && _filter == null || _filter(directoryInfo))
{
var filteredDirectoryEventArgs = new FilteredFileSystemElementEventArgs <DirectoryInfo> {
FileSystemElement = directoryInfo
};
OnEvent(FilteredDirectoryFound, filteredDirectoryEventArgs);
if (filteredDirectoryEventArgs.ActionType == ActionType.StopSearch)
{
yield break;
}
if (filteredDirectoryEventArgs.ActionType != ActionType.ExcludeElement)
{
yield return(directoryInfo);
}
}
foreach (var item in VisitDirectory(subDirectory))
{
yield return(item);
}
}
}