static void WriteValueCommand(Df2Stream stream, uint?handle = null, bool commandName = true)
{
if (handle is not null)
{
stream.BaseWriter !.Write((byte)Command.EditValueByHandle);
stream.BaseWriter !.WriteDf2UInt(handle.Value);
}
if (commandName)
{
stream.BaseWriter !.Write((byte)Command.Value);
}
}
public bool ProcessCommand()
{
if (_stream.BaseReader is null)
{
throw new NotSupportedException("Stream is not configured for reading");
}
var cmd = (Command)_stream.BaseReader !.ReadByte();
switch (cmd)
{
case Command.End:
{
_stream.HasReceivedEnd = true;
#if DEBUG
_stream.CoreReceiveEvent("End;");
#endif
return(false);
}
case Command.Group:
{
var path = Df2Stream.GetFullPath(_stream.BaseReader.ReadDf2String(),
_stream.InboundCurrentGroup?.AbsolutePath ?? "/");
#if DEBUG
_stream.CoreReceiveEvent($"Group ({path});");
#endif
if (string.IsNullOrWhiteSpace(path))
{
if (path == string.Empty)
{
_stream.InboundCurrentGroup = null;
break;
}
throw new InvalidOperationException();
}
var previousPath = Df2Stream.GetFullPath("..", path);
var parentValue = _stream.GetValue(previousPath);
if (parentValue is Value)
{
throw new InvalidOperationException(
"The path to contain the group refers to a value instead of a group or the document root.");
}
var parentGroupDictionary =
(ValueDictionary)(parentValue is null ? _stream.Values : ((Group)parentValue).Values);
var name = Path.GetFileName(path);
if (!parentGroupDictionary.TryGetValue(name, out var value))
{
parentGroupDictionary.Add(value = new Group(parentValue ?? _stream, name));
}
_stream.InboundCurrentGroup = (Group)value;
break;
}
case Command.Value:
{
var kind = (ValueKind)_stream.BaseReader.ReadByte();
var path = Df2Stream.GetFullPath(_stream.BaseReader.ReadDf2String(),
_stream.InboundCurrentGroup?.AbsolutePath ?? "/").TrimEnd('/');
ValueTuple <ValueKind, string, object> recv = (kind, path, null);
if (string.IsNullOrWhiteSpace(path))
{
throw new InvalidOperationException("Path should not be null or whitespace");
}
var previousPath = Df2Stream.GetFullPath("..", path);
var parentValue = _stream.GetValue(previousPath);
if (parentValue is Value)
{
throw new InvalidOperationException(
"The path to contain the group refers to a value instead of a group or the document root.");
}
var currentDictionary =
(ValueDictionary)(parentValue is null ? _stream.Values : ((Group)parentValue).Values);
var name = Path.GetFileName(path);
if (currentDictionary.TryGetValue(name, out var val))
{
((Value)val).UpdateValue(kind, recv.Item3 = ReadValue(kind, out _));
}
else
{
currentDictionary.Add(new Value((IGroupInternal)parentValue ?? _stream, name, kind,
recv.Item3 = ReadValue(kind, out _)));
}
#if DEBUG
_stream.CoreReceiveEvent(
$"Value {recv.Item1} ({recv.Item2}) ({Helpers.CoreToString(recv.Item3)});");
#endif
break;
}
case Command.Remove:
{
var path = Df2Stream.GetFullPath(_stream.BaseReader.ReadDf2String(),
_stream.InboundCurrentGroup?.AbsolutePath ?? "/").TrimEnd('/');
if (string.IsNullOrWhiteSpace(path))
{
throw new InvalidOperationException("Path should not be null or whitespace");
}
#if DEBUG
_stream.CoreReceiveEvent($"Remove ({path});");
#endif
var previousPath = Df2Stream.GetFullPath("..", path);
var parentValue = _stream.GetValue(previousPath);
var parentGroupDictionary =
(ValueDictionary)(parentValue is null ? _stream.Values : ((Group)parentValue).Values);
parentGroupDictionary.Remove(Path.GetFileName(path));
break;
}
case Command.Handle:
{
var rawPath = _stream.BaseReader.ReadDf2String();
if (string.IsNullOrWhiteSpace(rawPath))
{
((IDictionary <uint, IValue>)_stream.Handles).Remove(_stream.BaseReader.ReadDf2UInt());
break;
}
var path = Df2Stream.GetFullPath(rawPath,
_stream.InboundCurrentGroup?.AbsolutePath ?? "/").TrimEnd('/');
var value = _stream.GetValue(path);
if (value is null)
{
throw new InvalidOperationException("Can't assign a handle to the root of the document");
}
uint handle;
((IValueInternal)value).UpdateHandle(handle = _stream.BaseReader.ReadDf2UInt());
((IDictionary <uint, IValue>)_stream.Handles).Add(handle, value);
#if DEBUG
_stream.CoreReceiveEvent($"Handle ({path}) {handle};");
#endif
break;
}
case Command.EditValueByHandle:
{
uint handle;
var val = _stream.Handles[handle = _stream.BaseReader.ReadDf2UInt()];
if (val is not Value value)
{
throw new InvalidOperationException("Can only set a value of a handle referring to a value");
}
object read;
value.UpdateValue(val.Kind, read = ReadValue(val.Kind, out _));
#if DEBUG
_stream.CoreReceiveEvent($"EditValueByHandle {handle} ({Helpers.CoreToString(read)});");
#endif
break;
}
case Command.GroupByHandle:
{
uint handle;
var val = _stream.Handles[handle = _stream.BaseReader.ReadDf2UInt()];
if (val is not Group value)
{
throw new InvalidOperationException("Can only set a value of a handle referring to a value");
}
_stream.InboundCurrentGroup = value;
#if DEBUG
_stream.CoreReceiveEvent($"GroupByHandle {handle};");
#endif
break;
}
default:
throw new ArgumentOutOfRangeException();
}
return(true);
}
public CommandReceiver(Df2Stream stream)
{
_stream = stream;
}
public CommandSender(Df2Stream stream)
{
_stream = stream;
}