public IEnumerable <FileSystemInfoBase> Enumerate(string startPath)
{
Start?.Invoke(this, EventArgs.Empty);
CheckPath(startPath);
var result = _fileSystem.DirectoryInfo.FromDirectoryName(startPath).EnumerateFileSystemInfos("*", SearchOption.AllDirectories);
foreach (var systemInfoBase in result)
{
ProcessFoundEntry(systemInfoBase);
if (Filter != null && !Filter(systemInfoBase))
{
continue;
}
var args = new FilteredFileSystemInfoFound(); //not obvious - should filtered events be raised in case of empty filter?
ProcessFilteredEntry(systemInfoBase, args);
if (args.IsProcessTerminated)
{
break;
}
if (!args.IsExcluded)
{
yield return(systemInfoBase);
}
}
Finish?.Invoke(this, EventArgs.Empty);
}
private void ProcessFilteredEntry(FileSystemInfoBase systemInfoBase, FilteredFileSystemInfoFound args)
{
var isDirectory = systemInfoBase.Attributes.HasFlag(FileAttributes.Directory);
if (isDirectory)
{
FilteredDirectoryFound?.Invoke(systemInfoBase, args);
}
else
{
FilteredFileFound?.Invoke(systemInfoBase, args);
}
}
