Azavea.Open.DAO.CSV.CsvDaLayer.QuoteValue C# (CSharp) Méthode

        private string QuoteValue(object val)
        {
            // Nulls don't get anything, they should just appear as ",,"
            if (val == null)
            {
                return "";
            }
            StringBuilder sb = new StringBuilder();
            bool useQuotes = false;
            switch (_connDesc.OutputQuoteLevel)
            {
                case CsvQuoteLevel.QuoteAlways:
                    useQuotes = true;
                    break;
                case CsvQuoteLevel.QuoteStrings:
                    if (val is string)
                    {
                        useQuotes = true;
                    }
                    break;
                case CsvQuoteLevel.QuoteBareMinimum:
                    // Only quote it if it is a string that will break the CSV format.
                    if (val is string)
                    {
                        string strVal = (string) val;
                        if (strVal.IndexOfAny(new char[] {',', '"', '\n'}) != -1)
                        {
                            useQuotes = true;
                        }
                    }
                    break;
                default:
                    throw new Exception("Unknown quote level: " + _connDesc.OutputQuoteLevel);
            }
            if (useQuotes)
            {
                // open quote.
                sb.Append('"');
                if (val is string)
                {
                    // replace any double quotes with double double quotes, that is how they
                    // are escaped in a CSV.
                    val = ((string)val).Replace("\"", "\"\"");
                }
            }

            // The value itself.
            sb.Append(val);

            if (useQuotes)
            {
                // close quote.
                sb.Append('"');
            }
            return sb.ToString();
        }