Struct CsvStreamReader 

pub struct CsvStreamReader {
    pub path: String,
    pub config: CsvStreamConfig,
    pub position: u64,
    pub chunk_id: usize,
    /* private fields */
}

A streaming CSV reader that yields data in fixed-size chunks.

Fields

path: String

Path to the CSV file.

config: CsvStreamConfig

Configuration used by this reader.

position: u64

Byte offset of the next chunk start (after the header).

chunk_id: usize

Identifier of the next chunk to be returned.

Implementations

impl CsvStreamReader

pub fn open(path: &str, config: CsvStreamConfig) -> Result<Self>

Open a CSV file for streaming.

pub fn n_columns(&self) -> Option<usize>

Number of columns (known only after the header has been read or the first row has been parsed).

pub fn next_chunk(&mut self) -> Result<Option<CsvChunk>>

Read the next chunk of rows.

Returns Ok(None) when the file is exhausted.

pub fn reset(&mut self) -> Result<()>

Reset the reader back to the beginning of the data (after the header).