Add support for DataBar

Author: Chebo7

include/BarcodeFactory.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "DataBarGenerator.h"
 #include "DataMatrixGenerator.h"
 #include "IBarcodeGenerator.h"
 #include "ItfGenerator.h"

include/DataBarGenerator.h

@@ -0,0 +1,21 @@
+#pragma once
+#include "IBarcodeGenerator.h"
+#include <ZXing/Barcode.h>
+#include <ZXing/BarcodeFormat.h>
+#include <ZXing/BitMatrix.h>
+#include <ZXing/BitMatrixIO.h>
+#include <ZXing/CharacterSet.h>
+#include <ZXing/Matrix.h>
+#include <ZXing/MultiFormatWriter.h>
+#include <memory>
+#include <stdexcept>
+#include <string>
+#include <utility>
+
+class DataBarGenerator : public virtual IBarcodeGenerator {
+private:
+  ZXing::MultiFormatWriter writer{ZXing::BarcodeFormat::DataBar};
+
+public:
+  std::string generate(const std::string &text, int margin, int size);
+};

src/BarcodeFactory.cpp

@@ -1,4 +1,5 @@
 #include "../include/BarcodeFactory.h"
+#include <memory>
 
 std::unique_ptr<IBarcodeGenerator>
 BarcodeFactory::create(const std::string type) {
@@ -10,6 +11,8 @@ BarcodeFactory::create(const std::string type) {
     return std::make_unique<UpcAGenerator>();
   } else if (type == "ITF") {
     return std::make_unique<ItfGenerator>();
+  } else if (type == "DataBar") {
+    return std::make_unique<DataBarGenerator>();
   }
 
   return std::make_unique<QrGenerator>();

src/DataBarGenerator.cpp

@@ -0,0 +1,10 @@
+#include "../include/DataBarGenerator.h"
+
+std::string DataBarGenerator::generate(const std::string &text, int margin,
+                                       int size) {
+  writer.setMargin(margin);
+  writer.setEncoding(ZXing::CharacterSet::UTF8);
+  ZXing::BitMatrix matrix = writer.encode(text, size, size);
+
+  return ZXing::ToSVG(matrix);
+}