In iText 7, How to know whether specific character exists in font?

Question

In iText 7, How to know whether specific character exists in font?

In iText 5, I used below code.

Font font = FontFactory.getFont(fontName, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
BaseFont baseFont = font.getBaseFont();
boolean isExist = baseFont.charExists(ch);

Is this possible in iText 7?

Answer 1

Of course

File windowsFontDir = new File("C:\\Windows\\Fonts");
for(File fontFile : windowsFontDir.listFiles()) {
    try {
        PdfFont font = PdfFontFactory.createFont(fontFile.getAbsolutePath());
        if(font.containsGlyph((int) 'a'))
        {
            System.out.println("Font " + fontFile.getName() + " has the required glyph.");
        }else
        {
            System.out.println("Font " + fontFile.getName() + " does NOT have the required glyph.");
        }
    }catch(Exception ex){}
}

This prints something like:

Font AGENCYB.TTF has the required glyph.
Font AGENCYR.TTF has the required glyph.
Font ALGER.TTF has the required glyph.
Font ANTQUAB.TTF has the required glyph.
...

Answer 2

I'm not sure it will work for any font, because I haven't tested them all, but my first attempt would be to use the following method in PdfFont:

public abstract Glyph getGlyph(int unicode);

If the font does not contain a glyph for this Unicode code point, then this method should return null.