public string Encode(string text)
{
// convert any characters that fall in the /Encoding /Differences array
if (_differences != null && _differences.Elements.Count > 0)
{
var glyphMap = AdobeGlyfList.Instance;
var chars = text.ToCharArray().Select(ch => {
if (_differences.Elements.Count > ch)
{
var item = _differences.Elements[ch];
if (item is PdfName name)
{
return(glyphMap.Lookup(name.Value));
}
if (item is PdfInteger number)
{
return(((char)number.Value).ToString());
}
}
return(ch.ToString());
});
return(string.Concat(chars));
}
// if this font has a /ToUnciode CMAP then we will first resolve the text through it
if (_cmap != null)
{
return(_cmap.Encode(text));
}
// fallback on just displaying the text
return(text);
}