public uint GetSizeValue(uint dataOffset)
{
if (!ValidOffset(dataOffset))
{
throw new ArgumentOutOfRangeException("dataOffset", string.Format("{0} > {1}",
dataOffset.ToString("X8"), mPoolSize.ToString("X6")));
}
if (dataOffset < sizeof(uint))
{
throw new ArgumentOutOfRangeException("dataOffset", "Offset doesn't have room for a size value");
}
uint size_value;
if (!mDataOffsetToSizeValue.TryGetValue(dataOffset, out size_value))
{
if (mBufferedDataRemaining == 0)
{
throw new InvalidOperationException("No data left in buffer");
}
else if (mBuffer == null)
{
throw new InvalidOperationException("No underlying buffer");
}
uint size_offset = dataOffset - sizeof(uint);
// Great, now read the entry's value data
mBuffer.Seek32(size_offset);
size_value = mBuffer.ReadUInt32();
// Update how much data is still remaining
mBufferedDataRemaining -= sizeof(uint);
if (mBufferedDataRemaining == 0)
{
DisposeBuffer();
}
mDataOffsetToSizeValue.Add(dataOffset, size_value);
}
return(size_value);
}
PoolEntry DeBuffer(XmbVariantType type, uint offset, byte flags = 0)
{
if (!ValidOffset(offset))
{
throw new ArgumentOutOfRangeException("offset", string.Format("{0} > {1}",
offset.ToString("X8"), mPoolSize.ToString("X6")));
}
PoolEntry e;
if (!mEntries.TryGetValue(offset, out e))
{
if (mBufferedDataRemaining == 0)
{
throw new InvalidOperationException("No data left in buffer");
}
else if (mBuffer == null)
{
throw new InvalidOperationException("No underlying buffer");
}
// Create our new entry, setting any additional properties
e = PoolEntry.New(type);
if (type == XmbVariantType.String)
{
e.IsUnicode = flags != 0;
}
else if (type == XmbVariantType.Vector)
{
e.VectorLength = flags;
}
// Great, now read the entry's value data
mBuffer.Seek32(offset);
e.Read(mBuffer);
// Update how much data is still remaining
uint bytes_read = (uint)(mBuffer.BaseStream.Position - offset);
mBufferedDataRemaining -= bytes_read;
if (mBufferedDataRemaining == 0)
{
DisposeBuffer();
}
mEntries.Add(offset, e);
}
return(e);
}
