Utf8Decoder class final

This class converts UTF-8 code units (lists of unsigned 8-bit integers) to a string.

Example:

final utf8Decoder = utf8.decoder;
const encodedBytes = [
 195, 142, 195, 177, 197, 163, 195, 169, 114, 195, 177, 195, 165, 197,
 163, 195, 174, 195, 182, 195, 177, 195, 165, 196, 188, 195, 174, 197,
 190, 195, 165, 197, 163, 195, 174, 225, 187, 157, 195, 177];
final decodedBytes = utf8Decoder.convert(encodedBytes);
print(decodedBytes); // Îñţérñåţîöñåļîžåţîờñ

Throws a FormatException if the encoded input contains invalid UTF-8 byte sequences and allowMalformed is false (the default).

If allowMalformed is true, invalid byte sequences are converted into one or more Unicode replacement characters, U+FFFD ('�').

Example with allowMalformed set to true:

const utf8Decoder = Utf8Decoder(allowMalformed: true);
const encodedBytes = [0xFF];
final decodedBytes = utf8Decoder.convert(encodedBytes);
print(decodedBytes); // �

Inheritance

• Object
• Converter <List <int >, String >
• Utf8Decoder

Constructors

Utf8Decoder.new ({bool allowMalformed = false})

Instantiates a new Utf8Decoder.

const

Properties

hashCode → int

The hash code for this object.

no setterinherited

runtimeType → Type

A representation of the runtime type of the object.

no setterinherited

Methods

bind (Stream <List <int >> stream) → Stream <String >

Transforms the provided stream.

override

cast <RS, RT>() → Converter <RS, RT>

Provides a Converter<RS, RT> view of this stream transformer.

inherited

convert (List <int > codeUnits, [int start = 0, int? end]) → String

Converts the UTF-8 codeUnits (a list of unsigned 8-bit integers) to the corresponding string.

override

fuse <T>(Converter <String , T> next) → Converter <List <int >, T>

Fuses this with other.

override

noSuchMethod (Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

startChunkedConversion (Sink <String > sink) → ByteConversionSink

Starts a chunked conversion.

override

toString () → String

A string representation of this object.

inherited

Operators

operator == (Object other) → bool

The equality operator.

inherited