private int CreateParentDirectoryRecursive(ref PathParser parser, ref SaveEntryKey key)
{
int prevIndex = 0;
while (!parser.IsFinished())
{
int index = DirectoryTable.GetIndexFromKey(ref key).Index;
if (index < 0)
{
var newEntry = new TableEntry <SaveFindPosition>();
index = DirectoryTable.Add(ref key, ref newEntry);
if (prevIndex > 0)
{
LinkDirectoryToParent(prevIndex, index);
}
}
prevIndex = index;
key.Parent = index;
parser.TryGetNext(out key.Name);
}
return(prevIndex);
}
private bool FindPathRecursive(ReadOnlySpan <byte> path, out SaveEntryKey key)
{
var parser = new PathParser(path);
key = new SaveEntryKey(parser.GetCurrent(), 0);
while (!parser.IsFinished())
{
key.Parent = DirectoryTable.GetIndexFromKey(ref key).Index;
if (key.Parent < 0)
{
return(false);
}
parser.TryGetNext(out key.Name);
}
return(true);
}
private void CreateDirectoryRecursive(ReadOnlySpan <byte> path)
{
var parser = new PathParser(path);
var key = new SaveEntryKey(parser.GetCurrent(), 0);
int parentIndex = CreateParentDirectoryRecursive(ref parser, ref key);
int index = DirectoryTable.GetIndexFromKey(ref key).Index;
TableEntry <SaveFindPosition> dirEntry = default;
// Directory already exists. Do nothing.
if (index >= 0)
{
return;
}
index = DirectoryTable.Add(ref key, ref dirEntry);
LinkDirectoryToParent(parentIndex, index);
}
private void CreateFileRecursive(ReadOnlySpan <byte> path, ref SaveFileInfo fileInfo)
{
var parser = new PathParser(path);
var key = new SaveEntryKey(parser.GetCurrent(), 0);
int parentIndex = CreateParentDirectoryRecursive(ref parser, ref key);
int index = FileTable.GetIndexFromKey(ref key).Index;
TableEntry <SaveFileInfo> fileEntry = default;
// File already exists. Update file info.
if (index >= 0)
{
FileTable.GetValue(index, out fileEntry);
fileEntry.Value = fileInfo;
FileTable.SetValue(index, ref fileEntry);
return;
}
fileEntry.Value = fileInfo;
index = FileTable.Add(ref key, ref fileEntry);
LinkFileToParent(parentIndex, index);
}
public (int Index, int PreviousIndex) GetIndexFromKey(ref SaveEntryKey key)
{
Span <byte> entryBytes = stackalloc byte[_sizeOfEntry];
Span <byte> name = entryBytes.Slice(4, MaxNameLength);
ref SaveFsEntry entry = ref GetEntryFromBytes(entryBytes);