public Task Process(XenonHandler handler)
{
return(inner.Process(entry =>
{
XenonRow[] rows = new XenonRow[1024];
int position = XenonScanner.NextOpening(entry, 0, name);
while (position >= 0 && position < size)
{
XenonHierarchy hierarchy = new XenonHierarchy(rows);
if (Handle(entry, hierarchy, ref position) == -1)
{
return;
}
handler.Handle(new XenonDocument(entry, hierarchy));
position = XenonScanner.NextOpening(entry, position, name);
}
}));
}
public string ToString(XenonWhiteCharacter mode)
{
if (id > 0)
{
int length = hierarchy.GetLength(id);
int position = hierarchy.GetPosition(id);
StringBuilder builder = new StringBuilder(length);
if (length < 0)
{
length = -length;
}
if (mode == XenonWhiteCharacter.Omit)
{
int next = XenonScanner.SkipWhiteCharactersForward(entry, position);
length = length - (next - position);
position = next;
}
if (length > 0)
{
int prev = XenonScanner.SkipWhiteCharactersBackward(entry, position + length - 1);
length = length - (position + length - 1 - prev);
}
while (length > 0)
{
builder.Append(entry.GetCharacterAt(position, out int read));
position = position + read;
length = length - read;
}
return(builder.ToString());
}
return(null);
}
private int Handle(BufferEntry entry, XenonHierarchy hierarchy, ref int position)
{
//Console.WriteLine($"el {position}");
byte value;
bool self = false;
if (entry.GetByteAt(position++) != '<')
{
return(-1);
}
int starting = position;
if ((position = XenonScanner.NextElementName(entry, starting)) == -1)
{
return(-1);
}
// handle element start
int previousId = 0;
int owner = hierarchy.Add(starting, position - starting);
if ((position = XenonScanner.SkipWhiteCharactersForward(entry, position)) == -1)
{
return(-1);
}
if ((value = entry.GetByteAt(position)) == 0)
{
return(-1);
}
int append(int id)
{
if (previousId == 0)
{
hierarchy.SetFirst(owner, id);
previousId = id;
}
else
{
hierarchy.SetNext(previousId, id);
previousId = id;
}
return(id);
}
int addToHierarchy(int index, int length)
{
return(append(hierarchy.Add(index, length)));
}
int contentId = append(hierarchy.Add());
void setContent(int index, int length)
{
if (contentId != 0)
{
hierarchy.SetPosition(contentId, index);
hierarchy.SetLength(contentId, length);
contentId = 0;
}
else
{
addToHierarchy(index, length);
}
}
while (value != '/' && value != '>')
{
starting = position;
if ((position = XenonScanner.NextAttributeName(entry, starting)) == -1)
{
return(-1);
}
// handle attribute name
int nameId = addToHierarchy(starting, position - starting);
if ((position = XenonScanner.SkipWhiteCharactersForward(entry, position)) == -1)
{
return(-1);
}
if (entry.GetByteAt(position++) != '=')
{
return(-1);
}
if ((position = XenonScanner.SkipWhiteCharactersForward(entry, position)) == -1)
{
return(-1);
}
if (entry.GetByteAt(position++) != '"')
{
return(-1);
}
starting = position;
if ((position = XenonScanner.NextAttributeValue(entry, starting)) == -1)
{
return(-1);
}
// handle attribute value
int valueId = hierarchy.Add(starting, position - starting);
hierarchy.SetFirst(nameId, valueId);
if (entry.GetByteAt(position++) != '"')
{
return(-1);
}
if ((position = XenonScanner.SkipWhiteCharactersForward(entry, position)) == -1)
{
return(-1);
}
if ((value = entry.GetByteAt(position)) == 0)
{
return(-1);
}
}
if (value == '/')
{
if ((value = entry.GetByteAt(++position)) == 0)
{
return(-1);
}
self = true;
}
if (value != '>')
{
return(-1);
}
if (self == false)
{
position = position + 1;
while (true)
{
starting = position;
if ((position = XenonScanner.SkipWhiteCharactersForward(entry, position)) == -1)
{
return(-1);
}
if (starting == position)
{
if ((value = entry.GetByteAt(position)) == 0)
{
return(-1);
}
if (value == '<')
{
if ((value = entry.GetByteAt(position + 1)) == 0)
{
return(-1);
}
if (value == '/')
{
starting = position + 2;
if ((position = XenonScanner.NextElementName(entry, starting + 2)) == -1)
{
return(-1);
}
// handle element end
if ((value = entry.GetByteAt(position)) != '>')
{
return(-1);
}
//Console.WriteLine($"cl {position}");
return(owner);
}
if ((starting = Handle(entry, hierarchy, ref position)) == -1)
{
return(-1);
}
append(starting);
position++;
continue;
}
}
if ((position = XenonScanner.NextContent(entry, position)) == -1)
{
return(-1);
}
setContent(starting, position - starting);
}
}
return(owner);
}