Barcode class and enums moved to barcode.dart.

lib/esc_pos_printer.dart

@@ -6,6 +6,7 @@
  */
 library esc_pos_printer;
 
+export './src/barcode.dart';
 export './src/enums.dart';
 export './src/pos_column.dart';
 export './src/pos_styles.dart';

lib/src/barcode.dart

+class BarcodeType {
+  const BarcodeType._internal(this.value);
+  final int value;
+
+  /// UPC-A
+  static const upcA = BarcodeType._internal(0);
+
+  /// UPC-E
+  static const upcE = BarcodeType._internal(1);
+
+  /// JAN13 (EAN13)
+  static const ean13 = BarcodeType._internal(2);
+
+  /// JAN8 (EAN8)
+  static const ean8 = BarcodeType._internal(3);
+
+  /// CODE39
+  static const code39 = BarcodeType._internal(4);
+
+  /// ITF (Interleaved 2 of 5)
+  static const itf = BarcodeType._internal(5);
+
+  /// CODABAR (NW-7)
+  static const codabar = BarcodeType._internal(6);
+}
+
+class BarcodeText {
+  const BarcodeText._internal(this.value);
+  final int value;
+
+  /// Not printed
+  static const none = BarcodeText._internal(0);
+
+  /// Above the barcode
+  static const above = BarcodeText._internal(1);
+
+  /// Below the barcode
+  static const below = BarcodeText._internal(2);
+
+  /// Both above and below the barcode
+  static const both = BarcodeText._internal(3);
+}
+
+class BarcodeFont {
+  const BarcodeFont._internal(this.value);
+  final int value;
+
+  static const fontA = BarcodeText._internal(0);
+  static const fontB = BarcodeText._internal(1);
+  static const fontC = BarcodeText._internal(2);
+  static const fontD = BarcodeText._internal(3);
+  static const fontE = BarcodeText._internal(4);
+  static const specialA = BarcodeText._internal(97);
+  static const specialB = BarcodeText._internal(98);
+}
+
+class Barcode {
+  /// UPC-A
+  ///
+  /// k = 11, 12
+  /// d = '0' – '9'
+  Barcode.upcA(List<int> data) {
+    _type = BarcodeType.upcA;
+    _data = data;
+
+    final k = data.length;
+    if (k != 11 || k != 12) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    final numeric = RegExp(r'^[0-9]$');
+    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
+    if (!isDataValid) {
+      throw Exception('Barcode: Data is not valid');
+    }
+  }
+
+  /// UPC-E
+  ///
+  /// k = 6 – 8, 11, 12
+  /// d = '0' – '9' (However, d0 = '0' when k = 7, 8, 11, 12)
+  Barcode.upcE(List<int> data) {
+    _type = BarcodeType.upcE;
+    _data = data;
+
+    final k = data.length;
+    if (![6, 7, 8, 11, 12].contains(k)) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    if ([7, 8, 11, 12].contains(k) && data[0].toString() != '0') {
+      throw Exception('Barcode: Data is not valid');
+    }
+
+    final numeric = RegExp(r'^[0-9]$');
+    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
+    if (!isDataValid) {
+      throw Exception('Barcode: Data is not valid');
+    }
+  }
+
+  /// JAN13 (EAN13)
+  ///
+  /// k = 12, 13
+  /// d = '0' – '9'
+  Barcode.ean13(List<int> data) {
+    _type = BarcodeType.ean13;
+    _data = data;
+
+    final k = data.length;
+    if (k != 12 || k != 13) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    final numeric = RegExp(r'^[0-9]$');
+    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
+    if (!isDataValid) {
+      throw Exception('Barcode: Data is not valid');
+    }
+  }
+
+  /// JAN8 (EAN8)
+  ///
+  /// k = 7, 8
+  /// d = '0' – '9'
+  Barcode.ean8(List<int> data) {
+    _type = BarcodeType.ean8;
+    _data = data;
+
+    final k = data.length;
+    if (k != 7 || k != 8) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    final numeric = RegExp(r'^[0-9]$');
+    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
+    if (!isDataValid) {
+      throw Exception('Barcode: Data is not valid');
+    }
+  }
+
+  /// CODE39
+  ///
+  /// k >= 1
+  /// d: '0'–'9', A–Z, SP, $, %, *, +, -, ., /
+  Barcode.code39(List<int> data) {
+    _type = BarcodeType.code39;
+    _data = data;
+
+    final k = data.length;
+    if (k < 1) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    final regex = RegExp(r'^[0-9A-Z \$\%\*\+\-\.\/]$');
+    final bool isDataValid = data.every((d) => regex.hasMatch(d.toString()));
+    if (!isDataValid) {
+      throw Exception('Barcode: Data is not valid');
+    }
+  }
+
+  /// ITF (Interleaved 2 of 5)
+  ///
+  /// k >= 2 (even number)
+  /// d = '0'–'9'
+  Barcode.itf(List<int> data) {
+    _type = BarcodeType.itf;
+    _data = data;
+
+    final k = data.length;
+    if (k < 2 || !k.isEven) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    final numeric = RegExp(r'^[0-9]$');
+    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
+    if (!isDataValid) {
+      throw Exception('Barcode: Data is not valid');
+    }
+  }
+
+  /// CODABAR (NW-7)
+  ///
+  /// k >= 2
+  /// d: '0'–'9', A–D, a–d, $, +, −, ., /, :
+  /// However, d0 = A–D, dk = A–D (65-68)
+  /// d1 = a-d, dk = a-d (97-100)
+  Barcode.codabar(List<int> data) {
+    _type = BarcodeType.codabar;
+    _data = data;
+
+    final k = data.length;
+    if (k < 2) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    final regex = RegExp(r'^[0-9A-Da-d\$\+\-\.\/\:]$');
+    final bool isDataValid = data.every((d) => regex.hasMatch(d.toString()));
+    if (!isDataValid) {
+      throw Exception('Barcode: Data is not valid');
+    }
+
+    if (!((data[0] >= 65 && data[0] <= 68) &&
+        (data[k - 1] >= 65 && data[k - 1] <= 68))) {
+      throw Exception('Barcode: Wrong data range');
+    }
+
+    if (!((data[0] >= 97 && data[0] <= 100) &&
+        (data[k - 1] >= 97 && data[k - 1] <= 100))) {
+      throw Exception('Barcode: Wrong data range');
+    }
+  }
+
+  BarcodeType _type;
+  List<int> _data;
+
+  BarcodeType get type => _type;
+  List<int> get data => _data.map<int>((d) => d.toString().codeUnitAt(0));
+}

lib/src/enums.dart

@@ -92,223 +92,3 @@ class PosCodeTable {
   /// Space page
   static const spacePage = PosCodeTable._internal(255);
 }
-
-class BarcodeType {
-  const BarcodeType._internal(this.value);
-  final int value;
-
-  /// UPC-A
-  static const upcA = BarcodeType._internal(0);
-
-  /// UPC-E
-  static const upcE = BarcodeType._internal(1);
-
-  /// JAN13 (EAN13)
-  static const ean13 = BarcodeType._internal(2);
-
-  /// JAN8 (EAN8)
-  static const ean8 = BarcodeType._internal(3);
-
-  /// CODE39
-  static const code39 = BarcodeType._internal(4);
-
-  /// ITF (Interleaved 2 of 5)
-  static const itf = BarcodeType._internal(5);
-
-  /// CODABAR (NW-7)
-  static const codabar = BarcodeType._internal(6);
-}
-
-class Barcode {
-  /// UPC-A
-  ///
-  /// k = 11, 12
-  /// d = '0' – '9'
-  Barcode.upcA(List<int> data) {
-    _type = BarcodeType.upcA;
-    _data = data;
-
-    final k = data.length;
-    if (k != 11 || k != 12) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    final numeric = RegExp(r'^[0-9]$');
-    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
-    if (!isDataValid) {
-      throw Exception('Barcode: Data is not valid');
-    }
-  }
-
-  /// UPC-E
-  ///
-  /// k = 6 – 8, 11, 12
-  /// d = '0' – '9' (However, d0 = '0' when k = 7, 8, 11, 12)
-  Barcode.upcE(List<int> data) {
-    _type = BarcodeType.upcE;
-    _data = data;
-
-    final k = data.length;
-    if (![6, 7, 8, 11, 12].contains(k)) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    if ([7, 8, 11, 12].contains(k) && data[0].toString() != '0') {
-      throw Exception('Barcode: Data is not valid');
-    }
-
-    final numeric = RegExp(r'^[0-9]$');
-    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
-    if (!isDataValid) {
-      throw Exception('Barcode: Data is not valid');
-    }
-  }
-
-  /// JAN13 (EAN13)
-  ///
-  /// k = 12, 13
-  /// d = '0' – '9'
-  Barcode.ean13(List<int> data) {
-    _type = BarcodeType.ean13;
-    _data = data;
-
-    final k = data.length;
-    if (k != 12 || k != 13) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    final numeric = RegExp(r'^[0-9]$');
-    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
-    if (!isDataValid) {
-      throw Exception('Barcode: Data is not valid');
-    }
-  }
-
-  /// JAN8 (EAN8)
-  ///
-  /// k = 7, 8
-  /// d = '0' – '9'
-  Barcode.ean8(List<int> data) {
-    _type = BarcodeType.ean8;
-    _data = data;
-
-    final k = data.length;
-    if (k != 7 || k != 8) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    final numeric = RegExp(r'^[0-9]$');
-    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
-    if (!isDataValid) {
-      throw Exception('Barcode: Data is not valid');
-    }
-  }
-
-  /// CODE39
-  ///
-  /// k >= 1
-  /// d: '0'–'9', A–Z, SP, $, %, *, +, -, ., /
-  Barcode.code39(List<int> data) {
-    _type = BarcodeType.code39;
-    _data = data;
-
-    final k = data.length;
-    if (k < 1) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    final regex = RegExp(r'^[0-9A-Z \$\%\*\+\-\.\/]$');
-    final bool isDataValid = data.every((d) => regex.hasMatch(d.toString()));
-    if (!isDataValid) {
-      throw Exception('Barcode: Data is not valid');
-    }
-  }
-
-  /// ITF (Interleaved 2 of 5)
-  ///
-  /// k >= 2 (even number)
-  /// d = '0'–'9'
-  Barcode.itf(List<int> data) {
-    _type = BarcodeType.itf;
-    _data = data;
-
-    final k = data.length;
-    if (k < 2 || !k.isEven) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    final numeric = RegExp(r'^[0-9]$');
-    final bool isDataValid = data.every((d) => numeric.hasMatch(d.toString()));
-    if (!isDataValid) {
-      throw Exception('Barcode: Data is not valid');
-    }
-  }
-
-  /// CODABAR (NW-7)
-  ///
-  /// k >= 2
-  /// d: '0'–'9', A–D, a–d, $, +, −, ., /, :
-  /// However, d0 = A–D, dk = A–D (65-68)
-  /// d1 = a-d, dk = a-d (97-100)
-  Barcode.codabar(List<int> data) {
-    _type = BarcodeType.codabar;
-    _data = data;
-
-    final k = data.length;
-    if (k < 2) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    final regex = RegExp(r'^[0-9A-Da-d\$\+\-\.\/\:]$');
-    final bool isDataValid = data.every((d) => regex.hasMatch(d.toString()));
-    if (!isDataValid) {
-      throw Exception('Barcode: Data is not valid');
-    }
-
-    if (!((data[0] >= 65 && data[0] <= 68) &&
-        (data[k - 1] >= 65 && data[k - 1] <= 68))) {
-      throw Exception('Barcode: Wrong data range');
-    }
-
-    if (!((data[0] >= 97 && data[0] <= 100) &&
-        (data[k - 1] >= 97 && data[k - 1] <= 100))) {
-      throw Exception('Barcode: Wrong data range');
-    }
-  }
-
-  BarcodeType _type;
-  List<int> _data;
-
-  BarcodeType get type => _type;
-  List<int> get data => _data.map<int>((d) => d.toString().codeUnitAt(0));
-}
-
-class BarcodeText {
-  const BarcodeText._internal(this.value);
-  final int value;
-
-  /// Not printed
-  static const none = BarcodeText._internal(0);
-
-  /// Above the barcode
-  static const above = BarcodeText._internal(1);
-
-  /// Below the barcode
-  static const below = BarcodeText._internal(2);
-
-  /// Both above and below the barcode
-  static const both = BarcodeText._internal(3);
-}
-
-class BarcodeFont {
-  const BarcodeFont._internal(this.value);
-  final int value;
-
-  static const fontA = BarcodeText._internal(0);
-  static const fontB = BarcodeText._internal(1);
-  static const fontC = BarcodeText._internal(2);
-  static const fontD = BarcodeText._internal(3);
-  static const fontE = BarcodeText._internal(4);
-  static const specialA = BarcodeText._internal(97);
-  static const specialB = BarcodeText._internal(98);
-}

lib/src/printer.dart

@@ -11,6 +11,7 @@ import 'dart:io';
 import 'dart:typed_data';
 import 'package:hex/hex.dart';
 import 'package:image/image.dart';
+import 'barcode.dart';
 import 'commands.dart';
 import 'enums.dart';
 import 'pos_column.dart';