Struct Descriptor 

pub struct Descriptor {

    pub name: &'static str,
    pub title: &'static str,
    pub extensions: &'static [&'static str],
    pub name_endings: &'static [&'static str],
    pub read: ReadMode,
    pub compressed: Compressed,
    pub stream: Option<ReadMode>,
    pub http: RemoteRead,
    pub bucket_object: RemoteRead,
    pub bucket_prefix: Option<RemoteRead>,
    pub many_files: bool,
    pub lines: Option<Lines>,
    pub tables: Option<Tables>,
    pub summary: Summary,
    pub declares_types: bool,
    pub conversion: Option<Conversion>,
}

What datui knows of a format without reading a file of it.

Fields

name: &'static str

The name --format takes and the home screen counts (12 parquet). Lowercase and singular, one per format rather than per extension.

title: &'static str

What the format is called in a sentence: SQLite, Arrow IPC.

extensions: &'static [&'static str]

The extensions that say it, lowercase and without the dot. The first is the one a glob over a directory of it names.

name_endings: &'static [&'static str]

Whole-name endings that say it before the extension does: model.safetensors.index.json is SafeTensors, read as the shards it names.

read: ReadMode

How a file of it on disk, as its extension says, is read.

compressed: Compressed

How a compressed file of it is read.

stream: Option<ReadMode>

How an Arrow IPC stream of it is read, for the one format that has streams.

http: RemoteRead

How one HTTP(S) file of it is read.

bucket_object: RemoteRead

How one object of it in a bucket is read.

bucket_prefix: Option<RemoteRead>

How a bucket prefix or glob of it is read as one table, or None when it is browsed into and opened an object at a time.

many_files: bool

Whether many files of it are read as one table.

lines: Option<Lines>

How a line of it is read, for text read a line at a time: what --follow reads as it grows.

tables: Option<Tables>

The tables a file of it can hold, and how one is picked. The home screen lists them as places inside the file (shop.db/orders, run.npz/weights) that recents record and --table names.

summary: Summary

What the Info panel shows of a file of it besides the Schema tab.

declares_types: bool

Whether a file of it declares its columns’ types, which the Schema tab then calls known rather than inferred.

conversion: Option<Conversion>

What the loading screen and the footer say while a file of it is read into files of its own before it is scanned.

Trait Implementations

impl Debug for Descriptor

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

Formats the value using the given formatter.