FileBlock class final

A Block view backed by a dart:io File.

The file length is captured when the block is opened. Callers must treat the source file as immutable for the lifetime of the block.

Implemented types

• Block

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

size → int

The size in bytes.

no setter, override

type → String

The media type.

no setter, override

Methods

arrayBuffer() → Future<Uint8List>

Returns all bytes.

ensureMaterialized() → Future<FileBlock>

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

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

slice(int start, [int? end, String? contentType]) → Block

Returns a new Block containing bytes from start (inclusive) to end (exclusive), using Blob-compatible index normalization.

override

stream({int chunkSize = Block.defaultStreamChunkSize}) → Stream<Uint8List>

Streams bytes in chunks.

text() → Future<String>

Returns UTF-8 decoded text.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

open(File file, {String type = ''}) → Future<FileBlock>

Opens an entire file as a lazy, file-backed Block.

openRange(File file, {required int offset, required int length, String type = ''}) → Future<FileBlock>

Opens a byte range of file as a lazy, file-backed Block.