public IEnumerable <FileSystemEntry> EnumFileSystemEntries(string path)
{
Guard.IsNotNullOrEmpty(path, nameof(path));
if (platform.IsFileExists(path))
{
yield return(NewFile(path));
}
else if (platform.IsDirectoryExists(path))
{
Queue <string> queue = new Queue <string>(256);
queue.Enqueue(path);
while (queue.Count != 0)
{
string dirPath = queue.Dequeue();
string[] subDirs = platform.EnumDirectories(dirPath).ToArray();
yield return(NewDirectory(dirPath, subDirs.Length));
foreach (string filePath in platform.EnumFiles(dirPath))
{
yield return(NewFile(filePath));
}
queue.Enqueue(subDirs);
}
}
else
{
throw new ArgumentException(nameof(path));
}
}