protected override void DoOpen()
{
using (CustomBinaryReader reader = new CustomBinaryReader(new FileStream(ArchivePath, FileMode.Open, FileAccess.Read)))
{
uint signature = reader.ReadUInt32();
if (signature != 0x58445442)
{
throw new InvalidDataException("File is not BA2");
}
version = reader.ReadUInt32();
if (version > 1)
{
throw new InvalidDataException("Unsupported archive file version: " + version);
}
type = (ArchiveType)reader.ReadUInt32();
if (type != ArchiveType.General)
{
Log.Fine("Skipping archive file which is not the general purpose type.");
return;
}
long baseOffset = reader.BaseStream.Position;
uint fileCount = reader.ReadUInt32();
long fileNameTableOffset = reader.ReadInt64();
FileInfo[] files = new FileInfo[fileCount];
for (int i = 0; i < fileCount; i++)
{
files[i] = new FileInfo()
{
NameHash = reader.ReadUInt32(),
Type = reader.ReadUInt32(),
DirectoryNameHash = reader.ReadUInt32(),
Unknown1 = reader.ReadUInt32(),
DataOffset = reader.ReadInt64(),
DataCompressedSize = reader.ReadUInt32(),
DataUncompressedSize = reader.ReadUInt32(),
Unknown2 = reader.ReadUInt32()
};
}
reader.BaseStream.Position = fileNameTableOffset;
for (int i = 0; i < fileCount; i++)
{
ushort length = reader.ReadUInt16();
string path = reader.ReadStringFixedLength(length).ToLower();
string dir = Path.GetDirectoryName(path).ToLower();
string filename = Path.GetFileName(path).ToLower();
if (!sorted.ContainsKey(dir))
{
sorted.Add(dir, new SortedDictionary<string, FileInfo>());
}
sorted[dir].Add(filename, files[i]);
}
}
}
public StringTableReader(Stream stream)
{
reader = new CustomBinaryReader(stream);
uint count = reader.ReadUInt32();
uint dataSize = reader.ReadUInt32();
long dataPosition = 8 + count * 8;
for (int i = 0; i < count; i++)
{
uint index = reader.ReadUInt32();
uint offset = reader.ReadUInt32();
table.Add(index, dataPosition + offset);
}
}
protected override void DoOpen()
{
using (CustomBinaryReader reader = new CustomBinaryReader(new FileStream(ArchivePath, FileMode.Open, FileAccess.Read)))
{
uint signature = reader.ReadUInt32();
if (signature != 0x415342)
{
throw new InvalidDataException("File is not BSA");
}
uint version = reader.ReadUInt32();
uint folderOffset = reader.ReadUInt32();
flags = (ArchiveFlags)reader.ReadUInt32();
uint folderCount = reader.ReadUInt32();
uint fileCount = reader.ReadUInt32();
uint totalFolderNameLength = reader.ReadUInt32();
uint totalFileNameLength = reader.ReadUInt32();
uint fileExtensions = reader.ReadUInt32();
FolderInfo[] folders = new FolderInfo[(int)folderCount];
// Read folders
reader.BaseStream.Position = folderOffset;
for (int i = 0; i < folderCount; i++)
{
ulong hash = reader.ReadUInt64();
uint count = reader.ReadUInt32();
uint offset = reader.ReadUInt32() - totalFileNameLength;
folders[i] = new FolderInfo()
{
FileCount = count,
ContentOffset = offset
};
}
// Read folder content (name and files)
foreach (var folder in folders)
{
byte folderNameLength = reader.ReadByte();
folder.Path = Encoding.UTF8.GetString(reader.ReadBytes(folderNameLength - 1));
byte zero = reader.ReadByte();
folder.Files = new FileInfo[folder.FileCount];
for (int i = 0; i < folder.FileCount; i++)
{
ulong hash = reader.ReadUInt64();
uint size = reader.ReadUInt32();
bool compressed = flags.HasFlag(ArchiveFlags.DefaultCompressed);
if ((size & 0xf0000000) != 0)
{
size &= 0xfffffff;
compressed = !compressed;
}
uint offset = reader.ReadUInt32();
folder.Files[i] = new FileInfo()
{
Size = size,
DataOffset = offset,
IsCompressed = compressed
};
}
}
long total = fileCount;
long loaded = 0;
string filename = Path.GetFileName(ArchivePath);
// Read file names
foreach (var folder in folders)
{
foreach (var file in folder.Files)
{
file.Filename = reader.ReadStringZeroTerminated();
loaded++;
}
}
// Convert to nested sorted dictionary for fast search
for (int i = 0; i < folderCount; i++)
{
var files = new SortedDictionary<string, FileInfo>();
for (int j = 0; j < folders[i].FileCount; j++)
{
files.Add(folders[i].Files[j].Filename, folders[i].Files[j]);
}
sorted.Add(folders[i].Path, files);
}
return;
}
}
