private static IReadOnlyList <(int, string)> ProcessDifferences(ArrayToken differenceArray)
{
var differences = new List <(int, string)>();
if (differenceArray.Length == 0)
{
return(differences);
}
var activeCode = differenceArray.GetNumeric(0).Int;
for (int i = 1; i < differenceArray.Data.Count; i++)
{
var entry = differenceArray.Data[i];
if (entry is NumericToken numeric)
{
activeCode = numeric.Int;
}
else if (entry is NameToken name)
{
differences.Add((activeCode, name.Data));
activeCode++;
}
else
{
throw new InvalidFontFormatException($"Unexpected entry in the differences array: {differenceArray}.");
}
}
return(differences);
}
public static PdfRectangle ToIntRectangle(this ArrayToken array)
{
if (array == null)
{
throw new ArgumentNullException(nameof(array));
}
if (array.Data.Count != 4)
{
throw new PdfDocumentFormatException($"Cannot convert array to rectangle, expected 4 values instead got: {array}.");
}
return(new PdfRectangle(array.GetNumeric(0).Int,
array.GetNumeric(1).Int,
array.GetNumeric(2).Int,
array.GetNumeric(3).Int));
}