public bool FindNextDirectory(ref SaveFindPosition position, out string name)
{
if (position.NextDirectory == 0)
{
name = default;
return(false);
}
Span <byte> nameBytes = stackalloc byte[DirectoryTable.MaxNameLength];
bool success = DirectoryTable.TryGetValue(position.NextDirectory, out TableEntry <SaveFindPosition> entry, ref nameBytes);
// todo error message
if (!success)
{
name = default;
return(false);
}
position.NextDirectory = entry.NextSibling;
name = StringUtils.NullTerminatedUtf8ToString(nameBytes);
return(true);
}
private Result ReadImpl(out long entriesRead, ref SaveFindPosition position, Span <DirectoryEntry> entryBuffer)
{
HierarchicalSaveFileTable tab = ParentFileSystem.FileTable;
int i = 0;
if (Mode.HasFlag(OpenDirectoryMode.Directory))
{
while ((entryBuffer.IsEmpty || i < entryBuffer.Length) && tab.FindNextDirectory(ref position, out string name))
{
if (!entryBuffer.IsEmpty)
{
ref DirectoryEntry entry = ref entryBuffer[i];
Span <byte> nameUtf8 = Encoding.UTF8.GetBytes(name);
StringUtils.Copy(entry.Name, nameUtf8);
entry.Name[64] = 0;
entry.Type = DirectoryEntryType.Directory;
entry.Size = 0;
}
i++;
}
}
public bool FindNextFile(ref SaveFindPosition position, out SaveFileInfo info, out string name)
{
if (position.NextFile == 0)
{
info = default;
name = default;
return(false);
}
Span <byte> nameBytes = stackalloc byte[FileTable.MaxNameLength];
bool success = FileTable.TryGetValue(position.NextFile, out TableEntry <SaveFileInfo> entry, ref nameBytes);
// todo error message
if (!success)
{
info = default;
name = default;
return(false);
}
position.NextFile = entry.NextSibling;
info = entry.Value;
name = StringUtils.NullTerminatedUtf8ToString(nameBytes);
return(true);
}
public SaveDataDirectory(SaveDataFileSystemCore fs, SaveFindPosition position, OpenDirectoryMode mode)
{
ParentFileSystem = fs;
InitialPosition = position;
_currentPosition = position;
Mode = mode;
}
public bool TryOpenDirectory(U8Span path, out SaveFindPosition position)
{
if (!FindPathRecursive(path, out SaveEntryKey key))
{
position = default;
return(false);
}
if (DirectoryTable.TryGetValue(ref key, out TableEntry <SaveFindPosition> entry))
{
position = entry.Value;
return(true);
}
position = default;
return(false);
}
public bool TryOpenDirectory(U8Span path, out SaveFindPosition position)
{
UnsafeHelpers.SkipParamInit(out position);
if (!FindPathRecursive(path, out SaveEntryKey key))
{
return(false);
}
if (DirectoryTable.TryGetValue(ref key, out TableEntry <SaveFindPosition> entry))
{
position = entry.Value;
return(true);
}
return(false);
}
public Result GetEntryCount(out long entryCount)
{
SaveFindPosition position = InitialPosition;
return(ReadImpl(out entryCount, ref position, Span <DirectoryEntry> .Empty));
}
protected override Result DoGetEntryCount(out long entryCount)
{
SaveFindPosition position = InitialPosition;
return(ReadImpl(out entryCount, ref position, Span <DirectoryEntry> .Empty));
}