private int GetArchType(sio.BinaryReader br, long len, out int fileCount)
{
sio.MemoryStream ms;
long prevPos;
long lastPos;
byte b;
byte[] bb;
int size;
int i;
bool tru;
bb = new byte[0xfc];
ms = (sio.MemoryStream)br.BaseStream;
fileCount = 0;
prevPos = ms.Position;
lastPos = prevPos + len;
if (lastPos < 0x4)
return 0;
if (br.ReadInt32() == 0x64)
{
fileCount = br.ReadInt32();
size = (fileCount + 1) << 3;
if (fileCount > 0)
if (br.ReadInt32() == size)
{
ms.Position += size - 0xc - 0x8;
size = br.ReadInt32() + br.ReadInt32();
if (size <= lastPos)
return 1;
}
}
fileCount = 0;
ms.Position = prevPos;
if (lastPos > 0xff)
{
while (ms.Position < lastPos)
{
for (i = 0; i < bb.Length; i++)
{
b = br.ReadByte();
if (b == 0)
break;
else if ((b < 0x20) || (b > 0x7f))
{
i = 0;
break;
}
bb[i] = b;
}
if (i > 0)
{
if (!stre.Regex.IsMatch(ste.ASCII.GetString(bb, 0, i), "^(\\w*[/.]*){1,}.\\w+$"))
break;
}
else if (fileCount == 0)
break;
ms.Position += bb.Length - i - 1;
size = br.ReadInt32();
if (size < 0 || size > lastPos)
break;
ms.Position += size;
ms.AlignPos(0x40);
if (size == 0)
if (fileCount == 0)
break;
else
if (lastPos - ms.Position < 0x800)
return 2;
fileCount++;
}
if (fileCount > 0)
if (ms.Position == lastPos)
return 2;
}
fileCount = 0;
ms.Position = prevPos;
if (br.ReadInt32() == 1)
if (br.ReadInt32() == 0)
if (br.ReadInt32() == 0x30525053)
if (br.ReadInt32() == 0x20)
if (br.ReadInt32() - len - 0x4 < 0x40)
{
fileCount = br.ReadInt16();
return 3;
}
#if DEBUG
else
throw new ArgumentException("spr0 size mismatch!");
else
throw new ArgumentException("spr0 header size mismatch!");
#endif
fileCount = 0;
ms.Position = prevPos;
if (br.ReadInt32() == 0)
if (br.ReadInt32() - len - 0x4 < 0x40)
if (br.ReadInt32() == 0x31444D50) //pmd1
if (br.ReadInt32() == 0)
{
fileCount = br.ReadInt32();
if (br.ReadInt32() == 0x3)
return 4;
#if DEBUG
else
throw new ArgumentException("pmd1 flag mismatch!");
#endif
}
fileCount = 0;
ms.Position = prevPos;
if (br.ReadInt32() == 0x9)
if (br.ReadInt32() - len - 0x4 < 0x40)
if (br.ReadInt32() == 0x30505854) //txp0
if (br.ReadInt32() == 0)
{
fileCount = br.ReadInt32();
return 5;
}
fileCount = 0;
ms.Position = prevPos;
if (br.ReadInt32() == 1)
{
br.ReadInt32();
if (br.ReadInt32() == 0x30424950) //pib0
if (br.ReadInt32() == 0)
return 6;
}
if (len > 0x80)
{
fileCount = 0; //epl
ms.Position = prevPos + 0x44;
tru = (br.ReadInt32() & 0x40a00000) == 0x40a00000;
ms.Position += 0x4;
tru &= br.ReadInt32() == 0x3f800000;
ms.Position += 0xc;
tru &= br.ReadInt32() == 0x3f800000;
ms.Position += 0x28;
tru &= br.ReadInt32() == 0x90;
if (tru)
return 7;
}
fileCount = 0; //rmd
ms.Position = prevPos;
if (br.ReadUInt32() == 0xf0f000f0)
{
if (br.ReadInt32() == 0x2)
if (br.ReadInt32() == 0x40000000)
return 7;
}
else
{
ms.Position = prevPos;
tru = br.ReadInt32() == 0x16;
ms.Position += 0x8;
tru &= br.ReadInt32() == 1;
i = br.ReadInt32();
if ((i > -1) && ((i + ms.Position + 0x4) < lastPos))
{
ms.Position += 0x4 + i;
if (ms.Position < lastPos)
tru &= br.ReadInt32() == 0x15;
else
tru = false;
if (tru)
return 7;
}
}
fileCount = 0;
ms.Position = prevPos;
if (br.ReadInt32() == 0x34444542) //bed4
if (br.ReadInt32() == 0x3030)
{
br.ReadInt32();
if (br.ReadInt32() == 0)
return 7;
}
fileCount = 0;
ms.Position = prevPos;
if (br.ReadInt32() == 0x004E4943)
if (br.ReadInt32() == 1)
return 8;
return 0;
}