private PageUnit[] GetTableColumn(Page page, PageIndex index, string type)
{
bool stopAtNextEmpty = false;
bool active = true;
var columnMatches = new List <PageUnit>();
var traverser = new PageTraverser(page, index);
traverser.Traverse(Direction.Down, 1);
while (active && !traverser.ErrorOccurred)
{
string match = string.Empty;
var surroundingPageUnits = new PageUnit[9][]
{
traverser.Peek(Direction.Left),
traverser.GetCurrentPageUnits(),
traverser.Peek(Direction.Right),
traverser.Peek(Direction.Left, 2),
traverser.Peek(Direction.Right, 2),
traverser.Peek(Direction.Left, 3),
traverser.Peek(Direction.Right, 3),
traverser.Peek(Direction.Left, 4),
traverser.Peek(Direction.Right, 4)
};
var pageUnits = surroundingPageUnits
.Where(x => x != null)
.Where(x => x.Any(p => p.TextType == type))
.OrderBy(x => Math.Abs(traverser.GetCurrentPosition().Coordinate.X - x.First().Coordinate.X));
var matchingPageUnit = pageUnits.FirstOrDefault();
if (matchingPageUnit != null)
{
columnMatches.Add(matchingPageUnit.Where(x => x.TextType == type).First());
}
traverser.Traverse(Direction.Down, 1);
if (!string.IsNullOrWhiteSpace(match))
{
stopAtNextEmpty = true;
}
if (string.IsNullOrWhiteSpace(match) && stopAtNextEmpty)
{
active = false;
}
}
return(columnMatches.ToArray());
}
public TraversalResult Traverse(Direction direction, int?max = 0)
{
if (max == null)
{
max = int.MaxValue;
}
PageUnit current = null;
int steps = 0;
while (current == null && max-- > 0)
{
switch (direction)
{
case Direction.Up: TraverseUp(); break;
case Direction.Down: TraverseDown(); break;
case Direction.Left: TraverseLeft(); break;
case Direction.Right: TraverseRight(); break;
case Direction.NotSet: ErrorOccurred = true; break;
}
if (ErrorOccurred)
{
return(null);
}
current = CurrentPageUnit;
steps++;
}
return(new TraversalResult()
{
PageUnit = current,
Steps = steps
});
}
private bool ValidateTextTypeMatch(PageUnit pageUnit, string textType, string[] matchContent) => pageUnit != null && pageUnit?.TextType == textType && (matchContent?.Any(x => FuzzyTextComparer.FuzzyEquals(x, pageUnit.Value)) ?? true);
