Add support Code 128

Author: Chebo7

include/BarcodeFactory.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "Code128Generator.h"
 #include "Code39Generator.h"
 #include "Code93Generator.h"
 #include "DataBarExpandedGenerator.h"

include/Code128Generator.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 Code128Generator : public virtual IBarcodeGenerator {
+private:
+  ZXing::MultiFormatWriter writer{ZXing::BarcodeFormat::Code128};
+
+public:
+  std::string generate(const std::string &text, int margin, int size);
+};

src/BarcodeFactory.cpp

@@ -21,6 +21,8 @@ BarcodeFactory::create(const std::string type) {
     return std::make_unique<Code39Generator>();
   } else if (type == "Code93") {
     return std::make_unique<Code93Generator>();
+  } else if (type == "Code128") {
+    return std::make_unique<Code128Generator>();
   }
 
   return std::make_unique<QrCodeGenerator>();

src/Code128Generator.cpp

@@ -0,0 +1,10 @@
+#include "../include/Code128Generator.h"
+
+std::string Code128Generator::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);
+}