public static AlphaFolder Combine(AlphaFolder folderA, AlphaFolder folderB)
{
if (null == folderA)
{
throw new ArgumentNullException(nameof(folderA));
}
if (null == folderB)
{
throw new ArgumentNullException(nameof(folderB));
}
if (folderA == folderB)
{
throw new ArgumentException();
}
AlphaFolder combined = null;
if (string.Compare(folderA.Start, folderB.Start, true) <= 0)
{
// A has the lowest Start
if (string.Compare(folderA.End, folderB.End, true) <= 0)
{
// B has the highest End
combined = new AlphaFolder(folderA.Start, folderB.End);
}
else
{
// A has the highest End
combined = new AlphaFolder(folderA.Start, folderA.End);
}
}
else
{
// B has the lower Start
if (string.Compare(folderB.End, folderA.End, true) <= 0)
{
// A has the highest End
combined = new AlphaFolder(folderB.Start, folderA.End);
}
else
{
// B has the highest End
combined = new AlphaFolder(folderB.Start, folderB.End);
}
}
foreach (string fileName in folderA.Files)
{
ListUtils.SortedInsert(combined.Files, fileName);
}
foreach (string fileName in folderB.Files)
{
ListUtils.SortedInsert(combined.Files, fileName);
}
return(combined);
}
public int CompareTo(object obj)
{
AlphaFolder other = obj as AlphaFolder;
if (null == other)
{
throw new ArgumentException();
}
if (this == other)
{
throw new ArgumentException();
}
int startCmp = string.Compare(Start, other.Start, true);
int endCmp = string.Compare(End, other.End, true);
if (startCmp < 0 && endCmp < 0)
{
return(-1);
}
else if (startCmp > 0 && endCmp > 0)
{
return(1);
}
throw new ArgumentException();
}
private void CombineFolders(int indexA, int indexB)
{
if (Math.Abs(indexA - indexB) != 1)
{
throw new ArgumentException();
}
AlphaFolder folderA = _folders[indexA];
AlphaFolder folderB = _folders[indexB];
AlphaFolder combined = AlphaFolder.Combine(folderA, folderB);
_folders.Remove(folderA);
_folders.Remove(folderB);
ListUtils.SortedInsert(_folders, combined);
}
private void AddFolder(string start, string end = null)
{
AlphaFolder folder = new AlphaFolder(start, end);
ListUtils.SortedInsert(_folders, folder);
}
private void AddFile(string fileName)
{
AlphaFolder folder = GetFolderForFile(fileName);
ListUtils.SortedInsert(folder.Files, fileName);
}
public string GetFolderNameForFile(string fileName)
{
AlphaFolder folder = GetFolderForFile(fileName);
return(folder.ToString());
}
