Code39Decoder class

Code 39 barcode decoder.

Code 39 is a variable length, discrete barcode symbology. Each character is represented by 9 bars/spaces: 5 bars and 4 spaces. 3 of these 9 elements are wide (hence "Code 39" = 3 of 9).

Supported characters: 0-9, A-Z, -, ., $, /, +, %, space Start/Stop character: * (asterisk)

Inheritance

Constructors

Code39Decoder({bool checkDigit = false})
const

Properties

checkDigit → bool
If true, validates and strips Modulo 43 check digit.
final
format → String
The format name of this decoder (e.g., 'EAN_13', 'CODE_128').
no setteroverride
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

decode(BitMatrix matrix) → BarcodeResult?
Scans the bit matrix to find and decode a barcode.
inherited
decodeRow({required int rowNumber, required int width, required Uint16List runs, Uint8List? row}) → BarcodeResult?
Attempts to decode a barcode from a single row of the bit matrix.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

validateMod43(String text) → bool
Validates Modulo 43 check digit. This is optional for Code 39 but recommended for high reliability.