private void ExtractMetadata(List <object> row, CompressedHeader header)
{
var blockTypes = header.BlockTypes[category].TypeCount;
var map = category switch {
Category.Literal => header.LiteralCtxMap,
Category.Distance => header.DistanceCtxMap,
_ => throw new InvalidOperationException("Invalid context map category: " + category)
};
row.Add(blockTypes);
row.Add(map.TreeCount);
StringBuilder builder = new StringBuilder();
for (int blockID = 0; blockID < blockTypes; blockID++)
{
for (int contextID = 0; contextID < map.ContextsPerBlockType; contextID++)
{
builder.Append(map.DetermineTreeID(blockID, contextID));
builder.Append(',');
}
}
builder.Length -= 1;
row.Add(builder.ToString());
}
}
private static void ExtractMetadata(List <object> row, CompressedHeader header, CompressedData data)
{
row.Add(header.DistanceParameters.PostfixBitCount);
row.Add(header.DistanceParameters.DirectCodeCount);
var lcm = header.LiteralCtxModes;
// ReSharper disable once ConvertIfStatementToConditionalTernaryExpression
if (Enumerable.Range(1, lcm.Count - 1).All(index => lcm[index] == lcm[0]))
{
row.Add(lcm[0].ToString());
}
else
{
row.Add(string.Join(',', lcm.Select(mode => mode.ToString())));
}
foreach (var category in Categories.LID)
{
row.Add(header.BlockTypes[category].TypeCount);
}
row.Add(header.LiteralTrees.Count);
row.Add(header.InsertCopyTrees.Count);
row.Add(header.DistanceTrees.Count);
foreach (var category in Categories.LID)
{
row.Add(data.BlockSwitchCommands[category].Count);
}
row.Add(data.InsertCopyCommands.Count);
}
public Compressed(DataLength dataLength, CompressedHeader header, CompressedData data) : base(dataLength)
{
this.Header = header;
this.Data = data;
}
