public void Write(NSObject root)
{
// magic bytes
Write(new[] { (byte)'b', (byte)'p', (byte)'l', (byte)'i', (byte)'s', (byte)'t' });
//version
switch (version)
{
case VERSION_00:
{
Write(new[] { (byte)'0', (byte)'0' });
break;
}
case VERSION_10:
{
Write(new[] { (byte)'1', (byte)'0' });
break;
}
case VERSION_15:
{
Write(new[] { (byte)'1', (byte)'5' });
break;
}
case VERSION_20:
{
Write(new[] { (byte)'2', (byte)'0' });
break;
}
}
// assign IDs to all the objects.
root.AssignIDs(this);
idSizeInBytes = ComputeIdSizeInBytes(idDict.Count);
// offsets of each object, indexed by ID
long[] offsets = new long[idDict.Count];
// write each object, save offset
foreach (KeyValuePair <NSObject, int> pair in idDict)
{
NSObject obj = pair.Key;
int id = pair.Value;
offsets[id] = count;
if (obj == null)
{
Write(0x00);
}
else
{
obj.ToBinary(this);
}
}
// write offset table
long offsetTableOffset = count;
int offsetSizeInBytes = ComputeOffsetSizeInBytes(count);
foreach (long offset in offsets)
{
WriteBytes(offset, offsetSizeInBytes);
}
if (version != VERSION_15)
{
// write trailer
// 6 null bytes
Write(new byte[6]);
// size of an offset
Write(offsetSizeInBytes);
// size of a ref
Write(idSizeInBytes);
// number of objects
WriteLong(idDict.Count);
// top object
int rootID = idDict[root];
WriteLong(rootID);
// offset table offset
WriteLong(offsetTableOffset);
}
outStream.Flush();
}