Enum FileFormat 

pub enum FileFormat {
    Parquet,
    Csv,
    Tsv,
    Psv,
    Json,
    Jsonl,
    Arrow,
    Avro,
    Orc,
    Excel,
}

File format for data files (used to bypass extension-based detection). When --format is not specified, format is auto-detected from the file extension.

Variants

Parquet

Parquet columnar format

Csv

Comma-separated values

Tsv

Tab-separated values

Psv

Pipe-separated values

Json

JSON array format

Jsonl

JSON Lines / NDJSON (one JSON object per line)

Arrow

Arrow IPC / Feather

Avro

Avro row format

Orc

ORC columnar format

Excel

Excel (.xls, .xlsx, .xlsm, .xlsb)

Implementations

impl FileFormat

pub fn from_path(path: &Path) -> Option<Self>

Detect file format from path extension. Returns None when extension is missing or unknown.

pub fn from_extension(ext: &str) -> Option<Self>

Parse format from extension string (e.g. “parquet”, “csv”).

Trait Implementations

impl Clone for FileFormat

fn clone(&self) -> FileFormat

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FileFormat

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for FileFormat

fn eq(&self, other: &FileFormat) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ValueEnum for FileFormat

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.

impl Copy for FileFormat

impl Eq for FileFormat

impl StructuralPartialEq for FileFormat