public override void Init(ArcFile arc)
{
if (null == KnownNames)
{
ReadNames();
}
foreach (var entry in arc.Dir)
{
string name;
if (KnownNames.TryGetValue(entry.Name, out name))
{
entry.Name = name;
entry.Type = FormatCatalog.Instance.GetTypeFromName(name);
}
}
}
public override string ReadName(BinaryReader header)
{
if (null == KnownNames)
{
ReadNames();
}
var hash = base.ReadName(header);
string name;
if (null == hash || !KnownNames.TryGetValue(hash, out name))
{
return(hash);
}
if (string.IsNullOrEmpty(name))
{
return(null);
}
return(name);
}
public override string ReadName(BinaryReader header)
{
if (null == KnownNames)
{
ReadNames();
}
uint key = header.ReadUInt32();
uint name_hash = header.ReadUInt32() ^ key;
string name;
if (KnownNames.TryGetValue(name_hash, out name))
{
return(name);
}
uint ext_hash = header.ReadUInt32() ^ key;
name = name_hash.ToString("X8");
switch (ext_hash)
{
case 0x01854675: name += ".png"; break; // GetNameHash (".png")
case 0x03D435DE: name += ".map"; break; // GetNameHash (".map")
case 0x2D1F13E0: name += ".asd"; break; // GetNameHash (".asd")
case 0x482F4319: name += ".tjs"; break; // GetNameHash (".tjs")
case 0x58924012: name += ".txt"; break; // GetNameHash (".txt")
case 0xB01C48CA: name += ".ks"; break; // GetNameHash (".ks")
case 0xC0F7DFB2: name += ".wav"; break; // GetNameHash (".wav")
case 0xE3A31D19: name += ".jpg"; break; // GetNameHash (".jpg")
case 0xE7F3FEEB: name += ".ogg"; break; // GetNameHash (".ogg")
default: name += ext_hash.ToString("X8"); break;
}
return(name);
}
static unsafe void DecryptData(byte[] data, int pos, int length, uint key, uint seed)
{
if (pos < 0 || pos + length > data.Length)
{
throw new ArgumentOutOfRangeException("pos", "Invalid byte array index.");
fixed(byte *data8 = &data[pos])
{
uint *data32 = (uint *)data8;
for (int count = length / 4; count > 0; --count)
{
*data32 ^= key;
key += Binary.RotL(*data32, 16) ^ seed;
data32++;
}
}
}
RepiEntry EntryFromMd5(byte[] data, int pos, StringBuilder builder)
{
var key = new CowArray <byte> (data, pos, 16).ToArray();
string name;
if (KnownNames.TryGetValue(key, out name))
{
var entry = FormatCatalog.Instance.Create <RepiEntry> (name);
entry.HasEncryptionKey = true;
return(entry);
}
builder.Clear();
for (int i = 0; i < 16; ++i)
{
builder.AppendFormat("{0:x2}", key[i]);
}
return(new RepiEntry {
Name = builder.ToString()
});
}
public static Boolean TryGetRecordName(DbRecordId recordId, out String name)
{
return(KnownNames.TryGetValue(recordId.Value, out name));
}
