public CsvFormatter(char delimiter, char quoteChar, char escapeChar, string endOfLine, CsvQuotingStyle quotingStyle, Encoding encoding = null)
{
_delimiter = delimiter;
_quoteChar = quoteChar;
_duplicatedQuote = new string(quoteChar, 2);
_duplicatedEscape = new string(escapeChar, 2);
_quoteOrEscapechar = new[] { quoteChar, escapeChar };
_needQuoteChars = new[] { '\r', '\n', delimiter };
_endOfLine = endOfLine;
_endOfLineBs = ByteString.FromString(_endOfLine);
_quotingStyle = quotingStyle;
_encoding = encoding ?? Encoding.UTF8;
}
/// <summary>
/// Create a Flow for converting <see cref="IImmutableList{string}"/> to ByteString.
/// </summary>
/// <param name="delimiter">Value delimiter, defaults to comma</param>
/// <param name="quoteChar">Quote character, defaults to double quote</param>
/// <param name="escapeChar">Escape character, defaults to backslash</param>
/// <param name="endOfLine">Line ending (default CR, LF)</param>
/// <param name="quotingStyle">Quote all fields, or only fields requiring quotes (default)</param>
/// <param name="encoding">Character encoding, defaults to UTF-8</param>
/// <param name="byteOrderMark">Certain CSV readers (namely Microsoft Excel) require a Byte Order mark, defaults to None</param>
public static Flow <ImmutableList <string>, ByteString, NotUsed> Format(
char delimiter = Comma,
char quoteChar = DoubleQuote,
char escapeChar = Backslash,
string endOfLine = "\r\n",
CsvQuotingStyle quotingStyle = CsvQuotingStyle.Required,
Encoding encoding = null,
ByteString byteOrderMark = null)
{
var formatter = new CsvFormatter(delimiter, quoteChar, escapeChar, endOfLine, quotingStyle, encoding);
if (byteOrderMark == null)
{
return(Flow.FromFunction <ImmutableList <string>, ByteString>(list => formatter.ToCsv(list))
.Named("CsvFormatting"));
}
return(Flow.FromFunction <ImmutableList <string>, ByteString>(list => formatter.ToCsv(list))
.Named("CsvFormatting")
.Prepend(Source.Single(byteOrderMark)));
}
