private static bool WriteTag(StringBuilder sb,
                                     DxfRawTag tag,
                                     bool haveSection,
                                     int lineNumber,
                                     string str)
        {
            bool   isHeaderSection = str == CodeName.Section;
            string entityClass     = isHeaderSection == true ? "section" : "other";

            if (haveSection == true && isHeaderSection == true)
            {
                sb.AppendFormat("</div>");
                haveSection = false;
            }

            if (haveSection == false && isHeaderSection == true)
            {
                haveSection = true;
                sb.AppendFormat("<div class=\"content\">");
                sb.AppendFormat("<dt class=\"header\"><code class=\"lineHeader\">LINE</code><code class=\"codeHeader\">CODE</code><code class=\"dataHeader\">DATA</code></dt>{0}", Environment.NewLine);
            }

            sb.AppendFormat("<dt class=\"{3}\"><code class=\"line\">{4}</code><code class=\"code\">{0}:</code><code class=\"data\">{1}</code></dt>{2}",
                            tag.Code,
                            tag.Data,
                            Environment.NewLine,
                            entityClass,
                            lineNumber);

            return(haveSection);
        }
        private void ParseDxfData(StringBuilder sb, string fileName, string data)
        {
            WriteHtmlHeader(sb, fileName);
            WriteBodyHeader(sb, fileName);

            var lines = data.Split("\n".ToCharArray(),
                                   StringSplitOptions.RemoveEmptyEntries);

            var       tags = new List <DxfRawTag>();
            DxfRawTag tag  = null;

            bool previousName = false;
            bool haveSection  = false;

            //bool haveDxfCodeForType = false;

            string[] entity = new string[2] {
                null, null
            };
            int lineNumber = 0;

            foreach (var line in lines)
            {
                var str = line.Trim();

                // DxfCodeForType data
                if (tag != null)
                {
                    tag.Data = str;
                    tags.Add(tag);

                    haveSection = WriteTag(sb, tag, haveSection, lineNumber, str);

                    //haveDxfCodeForType = true;

                    tag = null;
                }
                else
                {
                    if (str == DxfCodeForType && entity[0] == null)
                    {
                        tag      = new DxfRawTag();
                        tag.Code = str;
                    }
                    else
                    {
                        if (entity[0] == null)
                        {
                            entity[0] = str;
                            entity[1] = null;
                        }
                        else
                        {
                            entity[1] = str;

                            WriteEntity(sb, entity, lineNumber);

                            // entity Name
                            previousName = entity[0] == DxfCodeForName;

                            entity[0] = null;
                            entity[1] = null;

                            //haveDxfCodeForType = false;
                        }
                    }
                }

                lineNumber++;
            }

            WriteBodyFooter(sb, haveSection);
            WriteHtmlFooter(sb);
        }