private void ReadUOPFiles(string pattern)
{
m_UOPReader = new BinaryReader(m_Map);
m_UOPReader.BaseStream.Seek(0, SeekOrigin.Begin);
if (m_UOPReader.ReadInt32() != 0x50594D)
{
throw new ArgumentException("Bad UOP file.");
}
m_UOPReader.ReadInt64(); // version + signature
long nextBlock = m_UOPReader.ReadInt64();
m_UOPReader.ReadInt32(); // block capacity
int count = m_UOPReader.ReadInt32();
UOPFiles = new UOPFile[count];
Dictionary <ulong, int> hashes = new Dictionary <ulong, int>();
for (int i = 0; i < count; i++)
{
string file = string.Format("build/{0}/{1:D8}.dat", pattern, i);
ulong hash = FileIndex.HashFileName(file);
if (!hashes.ContainsKey(hash))
{
hashes.Add(hash, i);
}
}
m_UOPReader.BaseStream.Seek(nextBlock, SeekOrigin.Begin);
do
{
int filesCount = m_UOPReader.ReadInt32();
nextBlock = m_UOPReader.ReadInt64();
for (int i = 0; i < filesCount; i++)
{
long offset = m_UOPReader.ReadInt64();
int headerLength = m_UOPReader.ReadInt32();
int compressedLength = m_UOPReader.ReadInt32();
int decompressedLength = m_UOPReader.ReadInt32();
ulong hash = m_UOPReader.ReadUInt64();
m_UOPReader.ReadUInt32(); // Adler32
short flag = m_UOPReader.ReadInt16();
int length = flag == 1 ? compressedLength : decompressedLength;
if (offset == 0)
{
continue;
}
int idx;
if (hashes.TryGetValue(hash, out idx))
{
if (idx < 0 || idx > UOPFiles.Length)
{
throw new IndexOutOfRangeException(
"hashes dictionary and files collection have different count of entries!");
}
UOPFiles[idx] = new UOPFile(offset + headerLength, length);
}
else
{
throw new ArgumentException(string.Format(
"File with hash 0x{0:X8} was not found in hashes dictionary! EA Mythic changed UOP format!",
hash));
}
}
} while (m_UOPReader.BaseStream.Seek(nextBlock, SeekOrigin.Begin) != 0);
}