public GgpkFile(FileRecord fileRecord, GgpkDirectory parent, GgpkFileSystem root)
{
Parent = parent;
Name = fileRecord.Name;
Size = fileRecord.DataLength;
_offset = fileRecord.DataOffset;
_root = root;
}
public GgpkFileSystem(string filePath)
{
Name = new FileInfo(filePath).Name;
SourceStream = File.OpenRead(filePath);
var recordsList = new List <IRecord>();
var headerBytes = new byte[sizeof(int) * 2];
var streamLength = SourceStream.Length;
while (SourceStream.Position < streamLength)
{
SourceStream.Read(headerBytes, 0, headerBytes.Length);
RecordHeader header;
unsafe
{
fixed(byte *bt = &headerBytes[0])
{
header = *(RecordHeader *)bt;
}
}
switch (header.Type)
{
case RecordType.Ggpk:
recordsList.Add(new GgpkRecord(SourceStream, header.Length));
break;
case RecordType.Directory:
recordsList.Add(new DirectoryRecord(SourceStream, header.Length));
break;
case RecordType.File:
recordsList.Add(new FileRecord(SourceStream, header.Length));
break;
case RecordType.Free:
recordsList.Add(new FreeRecord(SourceStream, header.Length));
break;
default:
throw new InvalidOperationException("Invalid record");
}
}
Records = recordsList.ToDictionary(c => c.Offset);
var ggpkRecord = (GgpkRecord)Records.First().Value;
var rootOffset =
ggpkRecord.RecordOffsets.First(c => Records[c] is DirectoryRecord);
var root = (DirectoryRecord)Records[rootOffset];
var rootDirectory = new GgpkDirectory(root, Parent, this);
_directories = rootDirectory.Directories.OfType <GgpkDirectory>().ToList();
_files = rootDirectory.Files.OfType <GgpkFile>().ToList();
_indexDict = new Lazy <Dictionary <string, IFileSystemEntry> >(() =>
{
return(_directories.Union(_files.Cast <IFileSystemEntry>())
.ToDictionary(c => c.Name));
});
}
