/// <summary>
/// Changes the directory.
/// </summary>
/// <param name="directory">The directory.</param>
public void ChangeDirectory(PK2Directory directory)
{
if (directory.Parent != null && directory.Path != null)
{
ReadBlockAt(directory.Position);
}
else
{
ReadBlockAt(256);
}
CurrentDirectory = directory;
}
/// <summary>
/// Reads the block.
/// </summary>
/// <param name="position">The position.</param>
/// <param name="currentDirectory">The current directory.</param>
private void ReadBlockAt(ulong position, PK2Directory currentDirectory = null)
{
var currentBlockBuffer = FileAdapter.GetInstance().ReadData((long)position, 2560);
var currentBlock = new PK2Block(currentBlockBuffer, position);
//Check if the chain continues at another position
if (currentBlock.Entries[19].NextChain > 0)
{
ReadBlockAt(currentBlock.Entries[19].NextChain);
}
//Read the subfolder chain
//The folder "." and ".." are required if you which to use "free-browsing" mode, without reading the whole index at once
foreach (var pk2Entry in currentBlock.Entries.Where(entry => !entry.Name.StartsWith(".") && entry.Position > 0))
{
switch (pk2Entry.Type)
{
case PK2EntryType.Directory:
if (Config.Mode == PK2Mode.Index)
{
var subDirectory = new PK2Directory(pk2Entry, currentDirectory?.Path);
_directories.Add(subDirectory);
ReadBlockAt(pk2Entry.Position, subDirectory);
}
else
{
ReadBlockAt(pk2Entry.Position);
}
break;
case PK2EntryType.File:
if (Config.Mode == PK2Mode.Index)
{
_files.Add(new PK2File(pk2Entry, currentDirectory?.Path));
}
break;
}
}
if (Config.Mode == PK2Mode.IndexBlocks)
{
Blocks.Add(currentBlock);
}
}
