void CSVRowInputStream::readPrefix()
{
/// In this format, we assume, that if first string field contain BOM as value, it will be written in quotes,
/// so BOM at beginning of stream cannot be confused with BOM in first string value, and it is safe to skip it.
skipBOMIfExists(istr);
if (with_names)
{
if (format_settings.with_names_use_header)
{
String column_name;
do
{
skipWhitespacesAndTabs(istr);
readCSVString(column_name, istr, format_settings.csv);
skipWhitespacesAndTabs(istr);
addInputColumn(column_name);
}
while (checkChar(format_settings.csv.delimiter, istr));
skipDelimiter(istr, format_settings.csv.delimiter, true);
}
else
{
setupAllColumnsByTableSchema();
skipRow(istr, format_settings.csv, column_indexes_for_input_fields.size());
}
}
else
{
setupAllColumnsByTableSchema();
}
}
ValuesRowInputStream::ValuesRowInputStream(ReadBuffer & istr_, const Block & header_, const Context & context_, const FormatSettings & format_settings)
: istr(istr_), header(header_), context(std::make_unique<Context>(context_)), format_settings(format_settings)
{
/// In this format, BOM at beginning of stream cannot be confused with value, so it is safe to skip it.
skipBOMIfExists(istr);
}
ValuesRowInputStream::ValuesRowInputStream(ReadBuffer & istr_, const Context & context_, bool interpret_expressions_)
: istr(istr_), context(context_), interpret_expressions(interpret_expressions_)
{
/// In this format, BOM at beginning of stream cannot be confused with value, so it is safe to skip it.
skipBOMIfExists(istr);
}
