protected IEnumerable <DiffItem> GetDiff(DirItem other, string pathSoFar)
{
List <DiffItem> diffs = new List <DiffItem>();
// added or updated files
var otherFilesMap = other.Files.ToDictionary(x => x, x => x);
foreach (var file in Files)
{
FileItem otherFile;
if (!otherFilesMap.TryGetValue(file, out otherFile))
{
diffs.Add(new DiffItem()
{
Name = string.Format(@"{0}\{1}", pathSoFar, file.Name),
Size = file.Size,
Status = DiffItemStatus.New
});
}
else if (file.Size != otherFile.Size)
{
diffs.Add(new DiffItem()
{
Name = string.Format(@"{0}\{1}", pathSoFar, file.Name),
Size = file.Size - otherFile.Size,
Status = DiffItemStatus.Old
});
}
}
// removed files
var thisFilesSet = new HashSet <FileItem>(Files);
foreach (var file in other.Files)
{
if (!thisFilesSet.Contains(file))
{
diffs.Add(new DiffItem()
{
Name = string.Format(@"{0}\{1}", pathSoFar, file.Name),
Size = -file.Size,
Status = DiffItemStatus.Removed,
});
}
}
// removed directories
var thisDirsSet = new HashSet <DirItem>(Directories);
foreach (var dir in other.Directories)
{
if (!thisDirsSet.Contains(dir))
{
diffs.Add(new DiffItem()
{
Name = string.Format(@"{0}\{1}", pathSoFar, dir.Name),
Size = -dir.Size,
Status = DiffItemStatus.Removed,
});
}
}
// new or changed dirs
var otherDirsMap = other.Directories.ToDictionary(x => x, x => x);
foreach (var dir in Directories)
{
DirItem otherDir;
if (!otherDirsMap.TryGetValue(dir, out otherDir))
{
diffs.Add(new DiffItem()
{
Name = string.Format(@"{0}\{1}", pathSoFar, dir.Name),
Size = dir.Size,
Status = DiffItemStatus.New,
});
}
else if (otherDir.Size != dir.Size)
{
diffs.AddRange(dir.GetDiff(otherDir, string.Format(@"{0}\{1}", pathSoFar, dir.Name)));
}
}
return(diffs);
}
public void AddDir(DirItem dirItem)
{
dirItems[dirsCount++] = dirItem;
Size += dirItem.Size;
}