public static FullTextSegmentInfo DeserializeSegmentInfo(Stream stream)
{
//var wordPositions = stream.ReadByte() == 1;
var fieldCountBytes = new byte[sizeof(int)];
stream.Read(fieldCountBytes, 0, sizeof(int));
var fieldCount = BitConverter.ToInt32(fieldCountBytes, 0);
var fieldOffsets = DocumentSerializer.DeserializeUlongLongDic(stream, fieldCount).ToDictionary(x => x.Key, y => y.Value);
var versionBytes = new byte[sizeof(long)];
stream.Read(versionBytes, 0, sizeof(long));
var docCountBytes = new byte[sizeof(int)];
stream.Read(docCountBytes, 0, sizeof(int));
var compression = new byte[sizeof(int)];
stream.Read(compression, 0, sizeof(int));
var postingsOffsetBytes = new byte[sizeof(long)];
stream.Read(postingsOffsetBytes, 0, sizeof(long));
var docHashOffsetBytes = new byte[sizeof(long)];
stream.Read(docHashOffsetBytes, 0, sizeof(long));
var docAddressesOffsetBytes = new byte[sizeof(long)];
stream.Read(docAddressesOffsetBytes, 0, sizeof(long));
var keyIndexOffsetBytes = new byte[sizeof(long)];
stream.Read(keyIndexOffsetBytes, 0, sizeof(long));
var keyIndexSizeBytes = new byte[sizeof(int)];
stream.Read(keyIndexSizeBytes, 0, sizeof(int));
var lenBytes = new byte[sizeof(long)];
stream.Read(lenBytes, 0, sizeof(long));
var pkFnLenBytes = new byte[sizeof(int)];
stream.Read(pkFnLenBytes, 0, sizeof(int));
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(pkFnLenBytes);
}
var pkFnLen = BitConverter.ToInt32(pkFnLenBytes, 0);
var pkFieldNameBytes = new byte[pkFnLen];
if (pkFnLen > 0)
{
stream.Read(pkFieldNameBytes, 0, pkFieldNameBytes.Length);
}
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(versionBytes);
Array.Reverse(docCountBytes);
Array.Reverse(compression);
Array.Reverse(postingsOffsetBytes);
Array.Reverse(docHashOffsetBytes);
Array.Reverse(docAddressesOffsetBytes);
Array.Reverse(pkFieldNameBytes);
Array.Reverse(keyIndexOffsetBytes);
Array.Reverse(keyIndexSizeBytes);
Array.Reverse(lenBytes);
}
var postingsOffset = BitConverter.ToInt64(postingsOffsetBytes, 0);
var docHashOffset = BitConverter.ToInt64(docHashOffsetBytes, 0);
var docAddressesOffset = BitConverter.ToInt64(docAddressesOffsetBytes, 0);
var keyIndexOffset = BitConverter.ToInt64(keyIndexOffsetBytes, 0);
var keyIndexSize = BitConverter.ToInt32(keyIndexSizeBytes, 0);
return(new FullTextSegmentInfo
{
Version = BitConverter.ToInt64(versionBytes, 0),
DocumentCount = BitConverter.ToInt32(docCountBytes, 0),
Compression = (Compression)BitConverter.ToInt32(compression, 0),
PrimaryKeyFieldName = Encoding.GetString(pkFieldNameBytes),
PostingsOffset = postingsOffset,
DocHashOffset = docHashOffset,
DocAddressesOffset = docAddressesOffset,
FieldOffsets = fieldOffsets,
KeyIndexOffset = keyIndexOffset,
KeyIndexSize = keyIndexSize,
Length = BitConverter.ToInt64(lenBytes, 0),
});
}
