public static void OverwriteSequenceNumbers(TagLib.Ogg.File file, long position, IDictionary<uint, int> shiftTable)
{
if (file == null)
{
throw new ArgumentNullException("file");
}
if (shiftTable == null)
{
throw new ArgumentNullException("shiftTable");
}
bool flag = true;
IEnumerator<KeyValuePair<uint, int>> enumerator = shiftTable.GetEnumerator();
try
{
while (enumerator.MoveNext())
{
KeyValuePair<uint, int> current = enumerator.Current;
if (current.Value != 0)
{
flag = false;
goto Label_0065;
}
}
}
finally
{
if (enumerator == null)
{
}
enumerator.Dispose();
}
Label_0065:
if (flag)
{
return;
}
while (position < (file.Length - 0x1bL))
{
PageHeader header = new PageHeader(file, position);
int length = (int) (header.Size + header.DataSize);
if (shiftTable.ContainsKey(header.StreamSerialNumber) && (shiftTable[header.StreamSerialNumber] != 0))
{
file.Seek(position);
ByteVector vector = file.ReadBlock(length);
ByteVector data = ByteVector.FromUInt(header.PageSequenceNumber + ((uint) ((long) shiftTable[header.StreamSerialNumber])), false);
for (int i = 0x12; i < 0x16; i++)
{
vector[i] = data[i - 0x12];
}
for (int j = 0x16; j < 0x1a; j++)
{
vector[j] = 0;
}
data.Add(ByteVector.FromUInt(vector.Checksum, false));
file.Seek(position + 0x12L);
file.WriteBlock(data);
}
position += length;
}
}