iTextSharp.text.pdf.PdfDictionary.GetAsArray C# (CSharp) Méthode

        public PdfArray GetAsArray(PdfName key)
        {
            PdfArray array = null;
            PdfObject orig = GetDirectObject(key);
            if (orig != null && orig.IsArray())
                array = (PdfArray) orig;
            return array;
        }

        private void FillDiffMap(PdfDictionary encDic, CMapToUnicode toUnicode)
        {
            PdfArray diffs = encDic.GetAsArray(PdfName.DIFFERENCES);

            if (diffs != null)
            {
                diffmap = new IntHashtable();
                int currentNumber = 0;
                for (int k = 0; k < diffs.Size; ++k)
                {
                    PdfObject obj = diffs[k];
                    if (obj.IsNumber())
                    {
                        currentNumber = ((PdfNumber)obj).IntValue;
                    }
                    else
                    {
                        int[] c = GlyphList.NameToUnicode(PdfName.DecodeName(((PdfName)obj).ToString()));
                        if (c != null && c.Length > 0)
                        {
                            uni2byte[c[0]]          = currentNumber;
                            byte2uni[currentNumber] = c[0];
                            diffmap[c[0]]           = currentNumber;
                        }
                        else
                        {
                            if (toUnicode == null)
                            {
                                toUnicode = ProcessToUnicode();
                                if (toUnicode == null)
                                {
                                    toUnicode = new CMapToUnicode();
                                }
                            }
                            string unicode = toUnicode.Lookup(new byte[] { (byte)currentNumber }, 0, 1);
                            if ((unicode != null) && (unicode.Length == 1))
                            {
                                this.uni2byte[unicode[0]]    = currentNumber;
                                this.byte2uni[currentNumber] = unicode[0];
                                this.diffmap[unicode[0]]     = currentNumber;
                            }
                        }
                        ++currentNumber;
                    }
                }
            }
        }