Trait Reader 

pub trait Reader: Send + Sync {
    // Required methods
    fn extensions(&self) -> &[&'static str];
    fn read(&self, path: &Path, options: &ReadOptions) -> Result<Table>;

    // Provided method
    fn name(&self) -> &'static str { ... }
}

A backend that knows how to read one or more tabular formats. Implementors register themselves with an Engine.

Send + Sync so engines can be shared across threads. All methods take &self so implementors can wrap their internals in Arc<Mutex<...>> if they need interior state.

Required Methods

fn extensions(&self) -> &[&'static str]

Lowercase file extensions this reader handles, without the leading dot (e.g. &["xlsx", "xls"]).

fn read(&self, path: &Path, options: &ReadOptions) -> Result<Table>

Open and read the file at path per the supplied options.

Provided Methods

fn name(&self) -> &'static str

Human-readable backend name for diagnostics ("calamine", "csv").

Implementors

impl Reader for CalamineReader

Available on crate feature calamine only.

impl Reader for CsvReader

Available on crate feature csv only.