Struct CsvEncoder 

pub struct CsvEncoder<W: Write> { /* private fields */ }

Implementations

impl<W: Write> CsvEncoder<W>

pub fn new(writer: W) -> Self

pub fn with_typed_headers(self, headers: Vec<String>) -> Self

Pre-declare typed headers (one per column, in order). When set, Self::begin uses these directly and ignores columns.

pub fn into_inner(self) -> W

Trait Implementations

impl<W: Write> RowEncoder for CsvEncoder<W>

fn begin(&mut self, columns: &[String]) -> Result<()>

Emit any header bytes the format needs (CSV header row, opening [ for the JSON array). Must be called exactly once before any write_row.

fn write_row(&mut self, row: &Row) -> Result<()>

Write one row. The encoder pulls column names from the row’s Row::iter_named iterator — they must align with the columns passed to Self::begin, in the same order, for CSV.

fn write_named_row(&mut self, columns: &[(String, LoraValue)]) -> Result<()>

Write the same shape as Self::write_row from a flat (name, value) slice. Used by encoders that consume rows from outside the engine (testing, replay).

fn finish(&mut self) -> Result<()>

Emit any trailer (closing ] for the JSON array) and flush the writer.