private static void BuildingDirectoriesTree(string path, ref Folder folder)
{
DirectoryInfo dir = new DirectoryInfo(path);
folder = new Folder(dir.Name);
try
{
// Going through all files
FileInfo[] currentFiles = dir.GetFiles();
folder.Files = new File[currentFiles.Length];
for (int i = 0; i < currentFiles.Length; i++)
{
string name = currentFiles[i].Name;
long size = currentFiles[i].Length;
folder.Files[i] = new File(name, size);
}
// Going through all folders
DirectoryInfo[] currentDirs = dir.GetDirectories();
folder.Folders = new Folder[currentDirs.Length];
for (int i = 0; i < currentDirs.Length; i++)
{
string name = currentDirs[i].Name;
Folder currentFolder = new Folder(name);
BuildingDirectoriesTree(currentDirs[i].FullName, ref currentFolder);
folder.Folders[i] = currentFolder;
}
}
catch (UnauthorizedAccessException)
{
Console.WriteLine("Cannot access directory {0}!", path);
return;
}
}
static void Main()
{
string path = @"C:\Program Files";
// Building the tree
Folder mainFolder = new Folder("Program Files");
BuildingDirectoriesTree(path, ref mainFolder);
// Locating the folder
string searchedFolder = "Internet Explorer";
Folder folder = LocateFolder(mainFolder, searchedFolder);
// Calculating the size of all files
long fileSizesSum = CalculateFolderFileSizes(folder);
Console.WriteLine("The sum of file sizes in folder {0} is: {1}", folder.Name, fileSizesSum);
}
private static long CalculateFolderFileSizes(Folder folder)
{
long result = 0;
foreach (var file in folder.Files)
{
result += file.Size;
}
foreach (var childFolder in folder.Folders)
{
result += CalculateFolderFileSizes(childFolder);
}
return result;
}
private static Folder LocateFolder(Folder mainFolder, string searchedFolder)
{
if (mainFolder.Name == searchedFolder)
{
return mainFolder;
}
Folder foundFolder = null;
foreach (var folder in mainFolder.Folders)
{
if (foundFolder == null)
{
Folder currentFolder = LocateFolder(folder, searchedFolder);
if (currentFolder != null)
{
foundFolder = currentFolder;
}
}
}
return foundFolder;
}
