private void SkipToToken(ArchiveMetadataToken token)
{
while (ReadToken() != token)
{
SkipDataBlock();
}
}
private void WriteUInt32Vector(IEnumerable <uint?> vector, ArchiveMetadataToken token)
{
var count = vector.Count();
var defined = vector.Count(x => x.HasValue);
if (defined > 0)
{
WriteAlignedHeaderWithBitVector(vector.Select(x => x.HasValue), count, defined, token, 4);
System.Diagnostics.Debug.Assert((mArchiveStream.Position & 3) == 0);
foreach (var slot in vector)
{
if (slot.HasValue)
{
WriteInt32((int)slot.Value);
}
}
}
}
private void WriteToken(ArchiveMetadataToken token)
{
System.Diagnostics.Debug.Assert(0 <= (int)token && (int)token <= 25);
WriteByte((byte)token);
}
private void WriteUInt32Vector(IEnumerable<uint?> vector, ArchiveMetadataToken token)
{
var count = vector.Count();
var defined = vector.Count(x => x.HasValue);
if (defined > 0)
{
WriteAlignedHeaderWithBitVector(vector.Select(x => x.HasValue), count, defined, token, 4);
System.Diagnostics.Debug.Assert((mArchiveStream.Position & 3) == 0);
foreach (var slot in vector)
if (slot.HasValue)
WriteInt32((int)slot.Value);
}
}
private void WriteDateVector(IEnumerable<DateTime?> dates, ArchiveMetadataToken token)
{
WriteUInt64Vector(dates.Select(x => x.HasValue ? (ulong)x.Value.ToFileTimeUtc() : default(ulong?)), token);
}
private void WriteAlignedHeaderWithBitVector(IEnumerable<bool> bits, int vectorCount, int itemCount, ArchiveMetadataToken token, int itemSize)
{
var vectorSize = (itemCount == vectorCount) ? 0 : (vectorCount + 7) / 8;
var contentSize = 2 + vectorSize + itemCount * itemSize;
// Insert padding to align the begin of the content vector at a multiple of the given item size.
WritePadding(3 + vectorSize + GetNumberSize(contentSize), itemSize);
WriteToken(token);
WriteNumber(contentSize);
if (itemCount == vectorCount)
{
WriteByte(1); // all items defined == true
}
else
{
WriteByte(0); // all items defined == false, followed by a bitvector for the defined items
WriteBitVector(bits);
}
WriteByte(0); // content vector is inline and not packed into a separate stream
// caller inserts content vector (itemCount * itemSize) right behind this call
}
private void WriteBitVectorWithHeader(ArchiveMetadataToken token, IEnumerable<bool> bits, int count)
{
WriteToken(token);
WriteNumber((count + 7) / 8);
WriteBitVector(bits);
}
private void SkipToToken(ArchiveMetadataToken token)
{
while (ReadToken() != token)
SkipDataBlock();
}
private void WriteToken(ArchiveMetadataToken token)
{
System.Diagnostics.Debug.Assert(0 <= (int)token && (int)token <= 25);
WriteByte((byte)token);
}
private void WriteDateVector(IEnumerable <DateTime?> dates, ArchiveMetadataToken token)
{
WriteUInt64Vector(dates.Select(x => x.HasValue ? (ulong)x.Value.ToFileTimeUtc() : default(ulong?)), token);
}
private void WriteAlignedHeaderWithBitVector(IEnumerable <bool> bits, int vectorCount, int itemCount, ArchiveMetadataToken token, int itemSize)
{
var vectorSize = (itemCount == vectorCount) ? 0 : (vectorCount + 7) / 8;
var contentSize = 2 + vectorSize + itemCount * itemSize;
// Insert padding to align the begin of the content vector at a multiple of the given item size.
WritePadding(3 + vectorSize + GetNumberSize(contentSize), itemSize);
WriteToken(token);
WriteNumber(contentSize);
if (itemCount == vectorCount)
{
WriteByte(1); // all items defined == true
}
else
{
WriteByte(0); // all items defined == false, followed by a bitvector for the defined items
WriteBitVector(bits);
}
WriteByte(0); // content vector is inline and not packed into a separate stream
// caller inserts content vector (itemCount * itemSize) right behind this call
}
private void WriteBitVectorWithHeader(ArchiveMetadataToken token, IEnumerable <bool> bits, int count)
{
WriteToken(token);
WriteNumber((count + 7) / 8);
WriteBitVector(bits);
}
