FileByteSource class final

A ByteSource over a file on disk (dart:io; VM/Flutter-native only).

dart:io's RandomAccessFile has a single seek cursor, so concurrent positional reads are serialized internally on one file handle; the pread semantics of the ByteSource contract hold (overlapping read calls never interfere), reads just don't run in parallel at the OS level.

Implemented types

• ByteSource

Properties

hashCode → int

The hash code for this object.

no setter, inherited

length → int

Total length of the source in bytes.

final

name → String

The path this source was opened from.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

close() → Future<void>

Releases any resources held by the source. Idempotent.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

read(int offset, int length) → Future<Uint8List>

Reads exactly length bytes starting at byte offset.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

open(String path) → Future<FileByteSource>

Opens path for random-access reading.