Add text formatting options to GS1-128 barcodes

DavBfr · Apr 11, 2024 · f911c00 · f911c00
1 parent 4d38959
commit f911c00
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Showing 4 changed files with 129 additions and 10 deletions.
diff --git a/barcode/CHANGELOG.md b/barcode/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- Add text display options to GS1-128 [NicolaVerbeeck]
+
 ## 2.2.6
 
 - Fix invalid UPC-E in some cases [shinbin]

diff --git a/barcode/lib/src/barcode.dart b/barcode/lib/src/barcode.dart
@@ -166,7 +166,15 @@ abstract class Barcode {
     bool useCode128C = true,
     bool escapes = false,
   }) =>
-      BarcodeCode128(useCode128A, useCode128B, useCode128C, false, escapes);
+      BarcodeCode128(
+        useCode128A: useCode128A,
+        useCode128B: useCode128B,
+        useCode128C: useCode128C,
+        isGS1: false,
+        escapes: escapes,
+        addSpaceAfterParenthesis: false,
+        keepParenthesis: false,
+      );
 
   /// GS1-128 [Barcode]
   ///
@@ -192,13 +200,29 @@ abstract class Barcode {
   /// Use `"{1}"` for FNC1, `"{2}"` for FNC2, `"{3}"` for FNC3, `"{4}"` for FNC4.
   /// Example: `"Test{1}1233{3}45"` will be equivalent to `Test FNC1 1233 FNC3 45`
   /// for the reader application.
+  ///
+  /// When [addSpaceAfterParenthesis] is enabled a space is added after the
+  /// parenthesis to make the barcode more readable when text is enabled
+  ///
+  /// When [keepParenthesis] is enabled, the parenthesis are kept in the barcode
+  /// when text is enabled
   static Barcode gs128({
     bool useCode128A = true,
     bool useCode128B = true,
     bool useCode128C = true,
     bool escapes = false,
+    bool addSpaceAfterParenthesis = true,
+    bool keepParenthesis = false,
   }) =>
-      BarcodeCode128(useCode128A, useCode128B, useCode128C, true, escapes);
+      BarcodeCode128(
+        useCode128A: useCode128A,
+        useCode128B: useCode128B,
+        useCode128C: useCode128C,
+        isGS1: true,
+        escapes: escapes,
+        addSpaceAfterParenthesis: addSpaceAfterParenthesis,
+        keepParenthesis: keepParenthesis,
+      );
 
   /// ITF-14 Barcode
   ///

diff --git a/barcode/lib/src/code128.dart b/barcode/lib/src/code128.dart
@@ -54,13 +54,15 @@ class BarcodeCode128Fnc {
 /// other attributes needed by the user.
 class BarcodeCode128 extends Barcode1D {
   /// Create a Code128 Barcode
-  const BarcodeCode128(
-    this.useCode128A,
-    this.useCode128B,
-    this.useCode128C,
-    this.isGS1,
-    this.escapes,
-  ) : assert(useCode128A || useCode128B || useCode128C,
+  const BarcodeCode128({
+    required this.useCode128A,
+    required this.useCode128B,
+    required this.useCode128C,
+    required this.isGS1,
+    required this.escapes,
+    required this.keepParenthesis,
+    required this.addSpaceAfterParenthesis,
+  }) : assert(useCode128A || useCode128B || useCode128C,
             'Enable at least one of the CODE 128 tables');
 
   /// Use Code 128 A table
@@ -78,6 +80,12 @@ class BarcodeCode128 extends Barcode1D {
   /// Generate a GS1-128 Barcode
   final bool isGS1;
 
+  /// Indicates that for text, the parenthesis should be kept
+  final bool keepParenthesis;
+
+  /// Indicates that for text should add a space after the parenthesis
+  final bool addSpaceAfterParenthesis;
+
   @override
   Iterable<int> get charSet => BarcodeMaps.code128B.keys
           .where((int x) => useCode128B && x >= 0)
@@ -299,8 +307,14 @@ class BarcodeCode128 extends Barcode1D {
       for (final match in RegExp(r'\(.+?\)').allMatches(data)) {
         result.write(data.substring(start, match.start));
         result.write(BarcodeMaps.code128FNC1String);
+        if (text && keepParenthesis) {
+          result.write('(');
+        }
         result.write(data.substring(match.start + 1, match.end - 1));
-        if (text) {
+        if (text && keepParenthesis) {
+          result.write(')');
+        }
+        if (text && addSpaceAfterParenthesis) {
           result.write(' ');
         }
         start = match.end;

diff --git a/barcode/test/code128_test.dart b/barcode/test/code128_test.dart
@@ -199,7 +199,84 @@ void main() {
       );
     }
   });
+  test('Barcode GS1-128 text default', () {
+    final bc = Barcode.gs128();
+    if (bc is BarcodeCode128) {
+      expect(
+        bc.adaptData('(3)0(92)', true),
+        equals('${BarcodeCode128Fnc.fnc1}3 0${BarcodeCode128Fnc.fnc1}92 '),
+      );
+
+      expect(
+        bc.adaptData('x(3)0(92)x', true),
+        equals('x${BarcodeCode128Fnc.fnc1}3 0${BarcodeCode128Fnc.fnc1}92 x'),
+      );
+
+      expect(
+        bc.adaptData('x(30(92)x', true),
+        equals('x${BarcodeCode128Fnc.fnc1}30(92 x'),
+      );
+    }
+  });
+  test('Barcode GS1-128 text keep parenthesis', () {
+    final bc = Barcode.gs128(keepParenthesis: true);
+    if (bc is BarcodeCode128) {
+      expect(
+        bc.adaptData('(3)0(92)', true),
+        equals('${BarcodeCode128Fnc.fnc1}(3) 0${BarcodeCode128Fnc.fnc1}(92) '),
+      );
+
+      expect(
+        bc.adaptData('x(3)0(92)x', true),
+        equals(
+            'x${BarcodeCode128Fnc.fnc1}(3) 0${BarcodeCode128Fnc.fnc1}(92) x'),
+      );
+
+      expect(
+        bc.adaptData('x(30(92)x', true),
+        equals('x${BarcodeCode128Fnc.fnc1}(30(92) x'),
+      );
+    }
+  });
+  test('Barcode GS1-128 text no space', () {
+    final bc = Barcode.gs128(addSpaceAfterParenthesis: false);
+    if (bc is BarcodeCode128) {
+      expect(
+        bc.adaptData('(3)0(92)', true),
+        equals('${BarcodeCode128Fnc.fnc1}30${BarcodeCode128Fnc.fnc1}92'),
+      );
+
+      expect(
+        bc.adaptData('x(3)0(92)x', true),
+        equals('x${BarcodeCode128Fnc.fnc1}30${BarcodeCode128Fnc.fnc1}92x'),
+      );
+
+      expect(
+        bc.adaptData('x(30(92)x', true),
+        equals('x${BarcodeCode128Fnc.fnc1}30(92x'),
+      );
+    }
+  });
+  test('Barcode GS1-128 text keep parenthesis no space', () {
+    final bc =
+        Barcode.gs128(keepParenthesis: true, addSpaceAfterParenthesis: false);
+    if (bc is BarcodeCode128) {
+      expect(
+        bc.adaptData('(3)0(92)', true),
+        equals('${BarcodeCode128Fnc.fnc1}(3)0${BarcodeCode128Fnc.fnc1}(92)'),
+      );
+
+      expect(
+        bc.adaptData('x(3)0(92)x', true),
+        equals('x${BarcodeCode128Fnc.fnc1}(3)0${BarcodeCode128Fnc.fnc1}(92)x'),
+      );
 
+      expect(
+        bc.adaptData('x(30(92)x', true),
+        equals('x${BarcodeCode128Fnc.fnc1}(30(92)x'),
+      );
+    }
+  });
   test('Barcode CODE-128 charSet', () {
     const code128A = <int>{
       32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, //