public Parser(IBinaryStream file)
{
m_file = file;
m_is_bigendian = 0x2a004d4d == m_file.Signature;
if (m_is_bigendian)
{
ReadUInt16 = () => Binary.BigEndian(m_file.ReadUInt16());
ReadUInt32 = () => Binary.BigEndian(m_file.ReadUInt32());
ReadUInt64 = () => Binary.BigEndian(m_file.ReadUInt64());
}
else
{
ReadUInt16 = () => m_file.ReadUInt16();
ReadUInt32 = () => m_file.ReadUInt32();
ReadUInt64 = () => m_file.ReadUInt64();
}
m_first_ifd = file.ReadHeader(8).ToUInt32(4);
}
public List <Entry> Deserialize()
{
m_index.Position = 8;
int count = Binary.BigEndian(m_index.ReadInt32());
m_name_list = new string[count];
for (int i = 0; i < count; ++i)
{
int length = m_index.ReadUInt8();
m_name_list[i] = m_index.ReadCString(length, Encoding.UTF8);
}
count = Binary.BigEndian(m_index.ReadInt32());
m_dir = new List <Entry> (count);
for (int i = 0; i < count; ++i)
{
m_index.ReadUInt16();
ushort flags = Binary.BigEndian(m_index.ReadUInt16());
uint offset = Binary.BigEndian(m_index.ReadUInt32());
uint size = Binary.BigEndian(m_index.ReadUInt32());
var entry = new SxEntry {
Flags = flags,
Offset = (long)offset << 4,
Size = size,
IsPacked = 0 != (flags & 0x03),
};
if (!entry.CheckPlacement(m_max_offset))
{
return(null);
}
m_dir.Add(entry);
}
count = Binary.BigEndian(m_index.ReadUInt16());
for (int i = 0; i < count; ++i)
{
m_index.ReadUInt32();
m_index.ReadUInt32();
m_index.ReadUInt32();
Binary.BigEndian(m_index.ReadUInt32()); // archive body length
m_index.ReadUInt64();
m_index.Seek(16, SeekOrigin.Current); // MD5 sum
}
count = Binary.BigEndian(m_index.ReadUInt16());
if (count > 0)
{
m_index.Seek(count * 24, SeekOrigin.Current);
}
DeserializeTree();
return(m_dir);
}
internal static object ReadField(this IBinaryStream input, FieldInfo field)
{
var field_type = field.FieldType;
var type_code = Type.GetTypeCode(field_type);
switch (type_code)
{
case TypeCode.SByte: return(input.ReadInt8());
case TypeCode.Byte: return(input.ReadUInt8());
case TypeCode.Int16: return(input.ReadInt16());
case TypeCode.UInt16: return(input.ReadUInt16());
case TypeCode.Int32: return(input.ReadInt32());
case TypeCode.UInt32: return(input.ReadUInt32());
case TypeCode.Int64: return(input.ReadInt64());
case TypeCode.UInt64: return(input.ReadUInt64());
case TypeCode.Char: return((char)input.ReadInt16());
case TypeCode.String:
var cstring_attr = field.GetCustomAttribute <CStringAttribute>();
if (cstring_attr != null)
{
var encoding = cstring_attr.Encoding ?? Encodings.cp932;
if (cstring_attr.IsLengthDefined)
{
return(input.ReadCString(cstring_attr.Length, encoding));
}
else
{
return(input.ReadCString(encoding));
}
}
throw new FormatException("Serialization method for string field is not defined.");
case TypeCode.Object:
object val = Activator.CreateInstance(field_type);
ReadStruct(input, field_type, ref val); // FIXME check object graph for cycles
return(val);
default:
throw new NotSupportedException("Not supported serialization type.");
}
}
internal IEnumerable <ArcDatEntry> ReadIndex(IBinaryStream input, int count, Scheme scheme, uint key = 0)
{
int skipped = 0;
var file_map = ReadFilenameMap(scheme);
for (int i = 0; i < count; ++i)
{
var hash = input.ReadUInt64();
var entry = new ArcDatEntry
{
Hash = hash,
Flags = input.ReadByte() ^ (byte)hash,
Offset = input.ReadUInt32() ^ (uint)hash ^ key,
Size = input.ReadUInt32() ^ (uint)hash,
UnpackedSize = input.ReadUInt32() ^ (uint)hash,
};
entry.IsPacked = 0 != (entry.Flags & 2);
byte[] raw_name = null;
if (file_map.TryGetValue(hash, out raw_name))
{
entry.Name = Encodings.cp932.GetString(raw_name);
entry.Type = FormatCatalog.Instance.GetTypeFromName(entry.Name);
entry.RawName = raw_name;
}
if (0 == (entry.Flags & 2))
{
if (null == raw_name)
{
// System.Diagnostics.Trace.WriteLine ("Unknown hash", hash.ToString ("X16"));
++skipped;
continue;
}
entry.Offset ^= raw_name[raw_name.Length >> 1];
entry.Size ^= raw_name[raw_name.Length >> 2];
entry.UnpackedSize ^= raw_name[raw_name.Length >> 3];
}
if (string.IsNullOrEmpty(entry.Name))
{
entry.Name = hash.ToString("X16");
}
yield return(entry);
}
if (skipped != 0)
{
System.Diagnostics.Trace.WriteLine(string.Format("Missing {0} names", skipped), "[noncolor]");
}
}
