//
// WriteRawColumns write raw columns using separator `sep` for each record to
// file.
//
// We use pointer in separator parameter, so we can use empty string as
// separator.
//
func (writer *Writer) WriteRawColumns(cols *tabula.Columns, sep *string) (
nrow int,
e error,
) {
ncol := len(*cols)
if ncol <= 0 {
return
}
if sep == nil {
sep = new(string)
*sep = DefSeparator
}
// Find minimum and maximum column length.
minlen, maxlen := cols.GetMinMaxLength()
esc := []byte(DefEscape)
sepbytes := []byte(*sep)
x := 0
// First, write until minimum column length.
for ; x < minlen; x++ {
v := cols.Join(x, sepbytes, esc)
v = append(v, DefEOL)
_, e = writer.BufWriter.Write(v)
if nil != e {
return x, e
}
}
// and then write column until max length.
for ; x < maxlen; x++ {
v := cols.Join(x, sepbytes, esc)
v = append(v, DefEOL)
_, e = writer.BufWriter.Write(v)
if nil != e {
break
}
}
_ = writer.Flush()
return x, e
}
