iTextSharp.text.pdf.FontDetails.ConvertToBytes C# (CSharp) Метод

        internal byte[] ConvertToBytes(string text)
        {
            byte[] b = null;
            switch (fontType) {
                case BaseFont.FONT_TYPE_T3:
                    return baseFont.ConvertToBytes(text);
                case BaseFont.FONT_TYPE_T1:
                case BaseFont.FONT_TYPE_TT: {
                    b = baseFont.ConvertToBytes(text);
                    int len = b.Length;
                    for (int k = 0; k < len; ++k)
                        shortTag[((int)b[k]) & 0xff] = 1;
                    break;
                }
                case BaseFont.FONT_TYPE_CJK: {
                    int len = text.Length;
                    if (cjkFont.IsIdentity()) {
                        foreach (char c in text) {
                            cjkTag[c] = 0;
                        }
                    }
                    else {
                        for (int k = 0; k < len; ++k) {
                            int val;
                            if (Utilities.IsSurrogatePair(text, k)) {
                                val = Utilities.ConvertToUtf32(text, k);
                                k++;
                            }
                            else {
                                val = text[k];
                            }
                            cjkTag[cjkFont.GetCidCode(val)] = 0;
                        }
                    }
                    b = cjkFont.ConvertToBytes(text);
                    break;
                }
                case BaseFont.FONT_TYPE_DOCUMENT: {
                    b = baseFont.ConvertToBytes(text);
                    break;
                }
                case BaseFont.FONT_TYPE_TTUNI: {
                    int len = text.Length;
                    int[] metrics = null;
                    char[] glyph = new char[len];
                    int i = 0;
                    if (symbolic) {
                        b = PdfEncodings.ConvertToBytes(text, "symboltt");
                        len = b.Length;
                        for (int k = 0; k < len; ++k) {
                            metrics = ttu.GetMetricsTT(b[k] & 0xff);
                            if (metrics == null)
                                continue;
                            longTag[metrics[0]] = new int[]{metrics[0], metrics[1], ttu.GetUnicodeDifferences(b[k] & 0xff)};
                            glyph[i++] = (char)metrics[0];
                        }
                    }
                    else {
                        for (int k = 0; k < len; ++k) {
                            int val;
                            if (Utilities.IsSurrogatePair(text, k)) {
                                val = Utilities.ConvertToUtf32(text, k);
                                k++;
                            }
                            else {
                                val = (int)text[k];
                            }
                            metrics = ttu.GetMetricsTT(val);
                            if (metrics == null)
                                continue;
                            int m0 = metrics[0];
                            int gl = m0;
                            if (!longTag.ContainsKey(gl))
                                longTag[gl] = new int[]{m0, metrics[1], val};
                            glyph[i++] = (char)m0;
                        }
                    }
                    string s = new String(glyph, 0, i);
                    b = PdfEncodings.ConvertToBytes(s, CJKFont.CJK_ENCODING);
                    break;
                }
            }
            return b;
        }