/// <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);
}
}
/// <summary>
/// Reads the block at.
/// This function does not recursively ready any "sub-chunks"
/// </summary>
/// <param name="position">The position.</param>
/// <returns></returns>
private void ReadBlockAt(ulong position)
{
Blocks = new PK2BlockCollection();
Directories = new List <PK2Directory>();
Files = new List <PK2File>();
while (true)
{
try
{
var currentBlockBuffer = FileAdapter.GetInstance().ReadData((long)position, 2560);
var currentBlock = new PK2Block(currentBlockBuffer, position);
Blocks.Blocks.Add(currentBlock);
foreach (var entry in currentBlock.Entries)
{
switch (entry.Type)
{
case PK2EntryType.Directory:
Directories.Add(new PK2Directory(entry, ""));
break;
case PK2EntryType.File:
Files.Add(new PK2File(entry, ""));
break;
}
}
//read the next block (only if the first block was not enough for the folder)
if (currentBlock.Entries[19].NextChain > 0)
{
position = currentBlock.Entries[19].NextChain;
continue;
}
break;
}
catch { throw new InvalidBlockException((long)position); } //should only be thrown, if the user fakes any position data in any entry!
}
}
