VisitTree

The extension method IFileSystem.VisitTree(string path, int depth) visits a tree structure of a filesystem.

IFileSystem ram = new MemoryFileSystem();
ram.CreateDirectory("/tmp/");
ram.CreateDirectory("/mnt/");
ram.CreateDirectory("/usr/lex/");
ram.CreateDirectory("c:/dir/dir/");
ram.CreateFile("/tmp/helloworld.txt", Encoding.UTF8.GetBytes("Hello World!\r\n"));
ram.CreateDirectory("file://c:/temp");

foreach (TreeVisit.Line line in ram.VisitTree())
{
    Console.WriteLine(line);
}

""
├── ""
│  ├── "mnt"
│  ├── "tmp"
│  │  └── "helloworld.txt"
│  └── "usr"
│     └── "lex"
├── "c:"
│  └── "dir"
│     └── "dir"
└── "file:"
   └── ""
      └── "c:"
         └── "temp"

Parameter depth determines visit depth.

foreach (TreeVisit.Line line in ram.VisitTree(depth: 1))
{
    Console.WriteLine(line);
}

""
├── ""
├── "c:"
└── "file:"

Parameter path determines start location.

foreach (TreeVisit.Line line in ram.VisitTree(path: "/tmp/"))
{
    Console.WriteLine(line);
}

"tmp"
└── "helloworld.txt"

PrintTree

The extension method IFileSystem.PrintTo(TextWriter output, string path, int depth, Format format) prints a tree structure to a TextWriter such as Console.Out (stdout).

IFileSystem ram = new MemoryFileSystem();
ram.CreateDirectory("/tmp/");
ram.CreateDirectory("/mnt/");
ram.CreateDirectory("/usr/lex/");
ram.CreateDirectory("c:/dir/dir/");
ram.CreateFile("/tmp/helloworld.txt", Encoding.UTF8.GetBytes("Hello World!\r\n"));
ram.CreateDirectory("file://c:/temp/");

ram.PrintTo(Console.Out);

""
├── ""
│  ├── "mnt"
│  ├── "tmp"
│  │  └── "helloworld.txt"
│  └── "usr"
│     └── "lex"
├── "c:"
│  └── "dir"
│     └── "dir"
└── "file:"
   └── ""
      └── "c:"
         └── "temp"

IFileSystem.PrintTo(TextWriter output, string path, int depth, Format format) appends to a StringBuilder.

StringBuilder sb = new StringBuilder();
ram.PrintTo(sb);

IFileSystem.Print(string path, int depth, Format format) prints out to as string.

Console.WriteLine(ram.Print());

Parameter depth determines visit depth.

Console.WriteLine(ram.Print(depth:1));

""
├── ""
├── "c:"
└── "file:"

Parameter path determines start location.

Console.WriteLine(ram.Print(path:"/tmp/"));

"tmp"
└── "helloworld.txt"

Parameter format determines which infos are printed out. For example PrintTree.Format.Path prints out full path instead of name.

string tree =  ram.Print(format: PrintTree.Format.Tree | PrintTree.Format.Path | 
                                 PrintTree.Format.Length | PrintTree.Format.Error);

├── /
│  ├── /mnt/
│  ├── /tmp/
│  │  └── /tmp/helloworld.txt 14
│  └── /usr/
│     └── /usr/lex/
├── c:/
│  └── c:/dir/
│     └── c:/dir/dir/
└── file:/
   └── file://
      └── file://c:/
         └── file://c:/temp/

PrintTree.Format flags:

Flag	Description
PrintTree.Format.Tree	The tree structure.
PrintTree.Format.Name	Entry name.
PrintTree.Format.Path	Entry path.
PrintTree.Format.Length	Entry length for file entires.
PrintTree.Format.Error	Traverse error.
PrintTree.Format.LineFeed	Next line.
PrintTree.Format.Mount	Mounted filesystem.
PrintTree.Format.DriveLabel	Label of filesystem drive or volume.
PrintTree.Format.DriveFreespace	Available free space on the drive or volume.
PrintTree.Format.DriveSize	Total size of drive or volume.
PrintTree.Format.DriveType	Drive or volume type, such as: Fixed, Removeable, Network, Ram
PrintTree.Format.DriveFormat	FileSystem format, such as: NTFS, FAT32, EXT4
PrintTree.Format.FileAttributes	File attributes, such as: ReadOnly, Hidden, System, Directory, Archive
PrintTree.Format.PhysicalPath	Physical path
PrintTree.Format.Default	PrintTree.Format.Tree | PrintTree.Format.Name | PrintTree.Format.Error
PrintTree.Format.DefaultPath	PrintTree.Format.Tree | PrintTree.Format.Path | PrintTree.Format.Error
PrintTree.Format.All	All flags.
PrintTree.Format.AllWithName	All flags with name printing (excludes path printing).
PrintTree.Format.AllWithPath	All flags with path printing (excludes name printing).