fixed `help2man`

Reviewed-on: MassiveDynamic/qr#1

CMakeLists.txt

@@ -1,6 +1,10 @@
 cmake_minimum_required(VERSION 3.14...3.25)
 
-set (CXX_STANDARD 23)
+project(
+	qr
+	VERSION 1.1.0
+	LANGUAGES CXX
+)
 
 if (DEFINED ENV{ARCH})
 	set(ARCH $ENV{ARCH})
@@ -10,12 +14,6 @@ endif()
 
 set(EXE_NAME "qr_${CMAKE_PROJECT_VERSION}-${ARCH}")
 
-project(
-	qr
-	VERSION 1.0.1
-	LANGUAGES CXX
-)
-
 message(STATUS "ARCH:: ${ARCH}")
 
 configure_file(main.cpp main_substitute.cpp)
@@ -27,5 +25,13 @@ set_target_properties(qr PROPERTIES OUTPUT_NAME ${EXE_NAME})
 target_compile_options(qr PUBLIC -Wall -std=c++20 -arch ${ARCH})
 target_include_directories(qr PRIVATE src lib)
 
+add_custom_target(man ALL)
+add_custom_command(
+	TARGET man
+	COMMAND help2man -h "-h" -v "-v" -o qr.7 ./${EXE_NAME}
+	COMMAND gzip -f qr.7
+)
+
 install(TARGETS qr RUNTIME DESTINATION bin)
-install(PROGRAMS build/${EXE_NAME} DESTINATION bin RENAME qr)
+install(PROGRAMS build/${EXE_NAME} DESTINATION bin RENAME qr)
+install(FILES build/qr.7.gz DESTINATION /usr/local/share/man/man7/)

README.md

@@ -3,3 +3,54 @@
 
 ![qr](docs/logo_qr.svg)
 
+## Usage
+This software currently supports outputting to the following formats:
+
+* svg
+* PNG
+* JPG
+* Bitmap
+
+or directly to the console, as kind of an *"ascii art"*.  
+after installing via `make install`, you can read more in the man page by calling `man qr`.
+### Options
+```
+  -f --format     output file format. can be one of "cli, png, svg, jpg, bmp"
+  -h --help       show this help
+  -i --input      take data from this argument instead of stdin
+  -o --output     output file name without extension
+  -s --size       desired output file size in pixels
+  -t --type       output QR code type. can be one of "small, medium, large"
+  -v --version    shows version info
+```
+
+### Examples
+```bash
+bash> qr -i "this is from parameter" -f png -s 512 -o my_qrcode_file
+
+bash> echo "this is from stdin" | qr -t small -f png -s 512 -o my_qrcode_file_with_low_ecc
+```
+
+## Installation
+You can just pick the newest version from the ["Releases" page][releases], or build the software yourself.
+
+### Building
+You will need:
+* cmake
+* make
+* a modern C++ compiler that supports `c++20`
+
+```bash
+# clone the repo
+bash ~/> git clone https://git.mike-ochmann.de/MassiveDynamic/qr.git
+# move into the repository
+bash ~/> cd qr
+# create the build directory and move into it
+bash ~/qr> mkdir build && cd build
+# run `cmake`
+bash ~/qr/build> cmake ..
+# make and install the software
+bash ~/qr/build> make install 
+```
+
+[releases]: releases/

docs/logo_qr.svg

@@ -1,231 +1,232 @@
 <?xml version="1.0" encoding="utf-8"?>
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-				viewBox="0 0 64 64"  xml:space="preserve">
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+    <rect x="27.8261" y="105.739" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="38.9565" y="105.739" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="83.4783" y="105.739" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="105.739" y="105.739" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="111.304" y="105.739" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="116.87" y="105.739" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="5.56522" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="38.9565" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="66.7826" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="83.4783" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="94.6087" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="105.739" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="111.304" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="116.87" y="111.304" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="5.56522" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="11.1304" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="16.6957" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="22.2609" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="27.8261" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="33.3913" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="38.9565" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="66.7826" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="77.913" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="100.174" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
+    <rect x="105.739" y="116.87" width="5.56522" height="5.56522" style="fill: black; stroke: black; stroke-width: 0.1%;" />
 </svg>

main.cpp

@@ -3,29 +3,50 @@
 #include <iostream>
 #include <sstream>
 
-#include "QR.hpp"
+#include <qrcodegen.hpp>
 
-#define UNUSED(var) (void) var;
+#include "util.hpp"
+#include "QR.hpp"
 
 // Version is injected through cmake
 constexpr const char* VERSION = "@qr_VERSION@";
 
 void printHelp() {
 	std::string helpText = R"EOF(
-(C) 2023, MikO <miko@massivedynamic.eu>
-– a tool for generating QR codes –
-Released under MIT license.
-
-Usage:
-    -f --format    output file format. can be one of "cli, png, svg"
-    -h --help      show this help
-    -i --input     take data from this argument instead of stdin
-    -o --output    output file name
-    -s --size      desired output file size in pixels
-    -t --type      output QR code type. can be one of "small, medium, large"
-	
-In pixel based renderers (i.e. PNG), the output size may not be exactly as
-specified but be the nearest multiple of the actual cell size for the QR code.
+
+qr is a tool for generating QR codes from the commandline
+
+Usage: qr [OPTION]... --input "data to encapsulate"
+
+*Caveats*
+  With no `--input` parameter defined, read STDIN
+
+  In pixel based renderers (i.e. PNG), the output code may not be exactly
+  centered, as the amount of segment may not correspond to the specified
+  output size.
+
+Options:
+  -f --format     output file format. can be one of "cli, png, svg, jpg, bmp"
+  -h --help       show this help
+  -i --input      take data from this argument instead of stdin
+  -o --output     output file name without extension
+  -s --size       desired output file size in pixels
+  -t --type       output QR code type. can be one of "small, medium, large"
+  -v --version    shows version info
+
+Examples:
+  qr -i "this is from parameter" -f png -s 512 -o my_qrcode_file
+
+  echo "this is from stdin" | qr -t small -f png -s 512 -o my_qrcode_file_with_low_ecc
+
+Copyright:
+  (C) 2023, MikO <miko@massivedynamic.eu>
+
+*License*
+  Released under MIT license
+
+Report bugs and issues at out issue tracker:
+  https://git.mike-ochmann.de/MassiveDynamic/qr/issues
 	)EOF";
 	std::cout << "qr " << VERSION;
 	std::cout << helpText << std::endl;
@@ -37,28 +58,32 @@ int main(int argc, char* argv[]) {
 		exit(1);
 	}
 	const option options[] = {
-		{"help", no_argument, nullptr, 'h'},
-		{"input", required_argument, nullptr, 'i'},
-		{"output", required_argument, nullptr, 'o'},
-		{"size", required_argument, nullptr, 's'},
-		{"type", required_argument, nullptr, 't'},
-		{"format", required_argument, nullptr, 'f'},
+		{"help",    no_argument,       nullptr, 'h'},
+		{"input",   required_argument, nullptr, 'i'},
+		{"output",  required_argument, nullptr, 'o'},
+		{"size",    required_argument, nullptr, 's'},
+		{"type",    required_argument, nullptr, 't'},
+		{"format",  required_argument, nullptr, 'f'},
+		{"version", no_argument,       nullptr, 'v'},
 		{nullptr}
 	};
 
 	std::string outputFile;
+	std::string paramData;
 	size_t segmentSize            = 0;
-	massivedynamic::Type type     = massivedynamic::Type::MEDIUM;
-	massivedynamic::Format format = massivedynamic::Format::CONSOLE;
 	bool fromStdin                = true;
-	std::string paramData         = "";
+	bool anyParameterSet          = false;
+	qrcodegen::QrCode::Ecc type   = qrcodegen::QrCode::Ecc::LOW;
+	massivedynamic::Format format = massivedynamic::Format::CONSOLE;
 
 	for(;;) {
 		int index  = -1;
-		int result = getopt_long(argc, argv, "ho:s:t:f:i:", options, &index);
+		int result = getopt_long(argc, argv, "vho:s:t:f:i:", options, &index);
 		
 		if (result == -1)
 			break;
+
+		anyParameterSet = true;
 		const option* opt = &options[index];
 		UNUSED(opt);
 		switch(result) {
@@ -74,12 +99,13 @@ int main(int argc, char* argv[]) {
 			case 't': {
 				std::string value = optarg;
 				if (value == "small")
-					type = massivedynamic::Type::SMALL;
+					type = qrcodegen::QrCode::Ecc::LOW;
 				else if (value == "medium")
-					type = massivedynamic::Type::MEDIUM;
+					type = qrcodegen::QrCode::Ecc::MEDIUM;
 				else if (value == "large")
-					type = massivedynamic::Type::LARGE;
+					type = qrcodegen::QrCode::Ecc::HIGH;
 				else {
+					std::cerr << "ERROR: type (-t, --type) has to be one of 'small', 'medium' or 'large'" << std::endl;
 					printHelp();
 					return 1;
 				}
@@ -87,12 +113,17 @@ int main(int argc, char* argv[]) {
 			}
 			case 'f': {
 				std::string value = optarg;
+				static_assert(massivedynamic::FormatLength == 5, "exhaustive formats: did you miss to add something here?");
 				if (value == "cli")
 					format = massivedynamic::Format::CONSOLE;
 				else if (value == "svg")
 					format = massivedynamic::Format::SVG;
 				else if (value == "png")
 					format = massivedynamic::Format::PNG;
+				else if (value == "jpg")
+					format = massivedynamic::Format::JPG;
+				else if (value == "bmp")
+					format = massivedynamic::Format::BMP;
 				else {
 					printHelp();
 					return 1;
@@ -104,6 +135,10 @@ int main(int argc, char* argv[]) {
 				paramData = optarg;
 				break;
 			}
+			case 'v': {
+				std::cout << "qr " << VERSION << std::endl;
+				exit(0);
+			}
 			case 'h':
 			default:
 				printHelp();
@@ -127,6 +162,8 @@ int main(int argc, char* argv[]) {
 
 		if (isatty(fileno(stdin)) || data.str().empty()) {
 			std::cerr << "ERROR: no data from stdinput." << std::endl;
+			if(!anyParameterSet)
+				printHelp();
 			exit(1);
 		}
 	} else
@@ -142,7 +179,8 @@ int main(int argc, char* argv[]) {
 		return 1;
 	}
 
-	std::unique_ptr<massivedynamic::QR> qr = std::make_unique<massivedynamic::QR>(data.str(), outputFile, segmentSize, type, format);
+	std::unique_ptr<massivedynamic::QR> qr = std::make_unique<massivedynamic::QR>(data.str(), outputFile, segmentSize, type);
+	qr->render(format);
 
 	return 0;
-}
+}

src/QR.cpp

@@ -1,45 +1,39 @@
-
 #include <iostream>
 #include <vector>
-#include "qrcodegen.hpp"
-#include "QR.hpp"
-#include "ConsoleRenderer.hpp"
-#include "PNGRenderer.hpp"
-#include "SVGRenderer.hpp"
+#include <cassert>
 
-namespace massivedynamic {
+#include "QR.hpp"
 
-QR::QR(const std::string& data, std::string outputFile, size_t size, Type type, Format format) : outputFile(std::move(outputFile)) {
+#include "renderers/ConsoleRenderer.hpp"
+#include "renderers/PNGRenderer.hpp"
+#include "renderers/SVGRenderer.hpp"
+#include "renderers/JPGRenderer.hpp"
+#include "renderers/BMPRenderer.hpp"
 
-	qrcodegen::QrCode::Ecc errorCorrectionLevel =  qrcodegen::QrCode::Ecc::HIGH;
+namespace massivedynamic {
 
-	switch(type) {
-		case Type::SMALL:
-		 	errorCorrectionLevel = qrcodegen::QrCode::Ecc::LOW;
-			break;
-		case Type::MEDIUM:
-			errorCorrectionLevel = qrcodegen::QrCode::Ecc::MEDIUM;
-			break;
-		default:
-		case Type::LARGE:
-			errorCorrectionLevel = qrcodegen::QrCode::Ecc::HIGH;
-			break;
+QR::QR(const std::string& data, std::string outputFile, size_t size, qrcodegen::QrCode::Ecc type) : outputFile(std::move(outputFile)), 
+		qr(qrcodegen::QrCode::encodeText(data.c_str(), type)), size(size) {
+	this->pixels.reserve(this->qr.getSize() * this->qr.getSize());
+	// this is inherently stupid, but "qrcodegen::QrCode" does not give access to the
+	// `segments` vector member and the class itself is marked final.
+	for (int y = 0; y < qr.getSize(); y++) {
+		for (int x = 0; x < qr.getSize(); x++)
+			this->pixels.push_back(qr.getModule(x, y));
 	}
 
-	qrcodegen::QrCode qr = qrcodegen::QrCode::encodeText(data.c_str(), errorCorrectionLevel);
-	
-	this->renderers.insert({Format::CONSOLE, std::make_unique<ConsoleRenderer>(this->pixels, qr.getSize(), size)});
-	this->renderers.insert({Format::PNG, std::make_unique<PNGRenderer>(this->pixels, qr.getSize(), size)});
-	this->renderers.insert({Format::SVG, std::make_unique<SVGRenderer>(this->pixels, qr.getSize(), size)});
+}
 
-	for (int y = 0; y < qr.getSize(); y++) {
-		for (int x = 0; x < qr.getSize(); x++) {
-			bool isFilled = qr.getModule(x, y);
-			this->pixels.push_back(isFilled ? true : false);
-		}
+void QR::render(Format format) {
+	static_assert(FormatLength == 5, "exhaustive formats: did you miss to add something here?");
+	switch(format) {
+		case Format::CONSOLE : this->renderTyped<ConsoleRenderer>(); break;
+		case Format::PNG     : this->renderTyped<PNGRenderer>(); break;
+		case Format::SVG     : this->renderTyped<SVGRenderer>(); break;
+		case Format::JPG     : this->renderTyped<JPGRenderer>(); break;
+		case Format::BMP     : this->renderTyped<BMPRenderer>(); break;
+		UNUSED_CASE(Format::END);
 	}
-
-	this->renderers.at(format)->render(this->outputFile);
 }
 
-}
+}

src/QR.hpp

@@ -2,33 +2,42 @@
 
 #include <vector>
 #include <string>
-#include <memory>
-#include <unordered_map>
-#include "qrcodegen.hpp"
+#include <qrcodegen.hpp>
+
+#include "util.hpp"
 #include "Renderer.hpp"
 
 namespace massivedynamic {
-	typedef uint32_t Color;
-
-	enum class Type {
-		SMALL,
-		MEDIUM,
-		LARGE
-	};
-
 	enum class Format {
 		CONSOLE,
 		SVG,
-		PNG
+		PNG,
+		JPG,
+		BMP,
+		END
 	};
 
+	constexpr size_t FormatLength = static_cast<size_t>(Format::END);
 	class QR {
 		private:
 			std::string outputFile;
 			std::vector<bool> pixels;
-			std::unordered_map<Format, std::unique_ptr<Renderer>> renderers;
+			qrcodegen::QrCode qr;
+			size_t size;
 		public:
-			QR(const std::string& data, std::string outputFile, size_t size, Type type, Format format);
+			QR(const std::string& data, std::string outputFile, size_t size, qrcodegen::QrCode::Ecc type);
+			QR(const QR&&)           = delete;
+			QR(QR&)                  = delete;
+			~QR()                    = default;
+			QR& operator=(const QR&) = delete;
+
+			void render(Format format);
+
+			template<typename T>
+			void renderTyped() {
+				T renderer = T(this->pixels, this->qr.getSize(), this->size);
+				renderer.render(this->outputFile);
+			}
 	};
 
-}
+}

src/Renderer.hpp

@@ -1,6 +1,8 @@
 #pragma once
 
 #include <vector>
+#include <string>
+#include <cstddef>
 
 namespace massivedynamic {
 	
@@ -11,7 +13,11 @@ class Renderer {
 		size_t targetSize;
 	public:
 		Renderer(const std::vector<bool>& pixels, size_t sourceSize, size_t targetSize) : pixels(pixels), sourceSize(sourceSize), targetSize(targetSize) {}
-		virtual ~Renderer() = default;
+		Renderer(const Renderer&&)           = delete;
+		Renderer(Renderer&)                  = delete;
+		virtual ~Renderer()                  = default;
+		Renderer& operator=(const Renderer&) = delete;
+
 		virtual void render(const std::string& filename) = 0;
 };
 

src/renderers/BMPRenderer.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <string>
+
+#include "PixelRenderer.hpp"
+
+namespace massivedynamic {
+
+class BMPRenderer final : public PixelRenderer {
+	public:
+		BMPRenderer(const std::vector<bool>& pixels, size_t sourceSize, size_t targetSize) : PixelRenderer(pixels, sourceSize, targetSize) {}
+
+		virtual void render(const std::string& filename) override {
+			this->generateBuffer();
+
+			stbi_write_bmp((filename + ".bmp").c_str(), targetSize, targetSize, 4, this->bitmap.data());
+		}
+
+};
+
+}

src/renderers/ConsoleRenderer.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <iomanip>
+
 #include "Renderer.hpp"
 
 namespace massivedynamic {
@@ -10,18 +12,17 @@ class ConsoleRenderer : public Renderer {
 		virtual void render(const std::string&) override {
 			int border = 1;
 
-			std::cout << std::string(border, '\n');
+			std::cout << std::setfill('\n') << std::setw(border) << "";
 			for (int y = 0; y < sourceSize; y++) {
 				std::cout << std::string(border * 2, ' ');
 				for (int x = 0; x < sourceSize; x++) {
 					bool isFilled = pixels.at(y * sourceSize + x);
 					std::cout << (isFilled ? "██" : "  ");
 				}
-				std::cout << std::string(border * 2, ' ');
-				std::cout << '\n';
+				std::cout << std::setfill(' ') << std::setw(border * 2) << '\n';
 			}
-			std::cout << std::string(border, '\n');
-			std::cout << std::endl;
+			std::cout << std::setfill('\n') << std::setw(border) << "";
+			std::cout.flush();
 		}
 };
 

src/renderers/JPGRenderer.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <string>
+
+#include "PixelRenderer.hpp"
+
+namespace massivedynamic {
+
+class JPGRenderer final: public PixelRenderer {
+	public:
+		JPGRenderer(const std::vector<bool>& pixels, size_t sourceSize, size_t targetSize) : PixelRenderer(pixels, sourceSize, targetSize) {}
+
+		virtual void render(const std::string& filename) override {
+			this->generateBuffer();
+
+			stbi_write_jpg((filename + ".jpg").c_str(), targetSize, targetSize, 4, this->bitmap.data(), sizeof(Color) * targetSize);
+		}
+
+};
+
+}

src/renderers/PNGRenderer.hpp

@@ -6,14 +6,14 @@
 
 namespace massivedynamic {
 
-class PNGRenderer : public PixelRenderer {
+class PNGRenderer final: public PixelRenderer {
 	public:
 		PNGRenderer(const std::vector<bool>& pixels, size_t sourceSize, size_t targetSize) : PixelRenderer(pixels, sourceSize, targetSize) {}
 
 		virtual void render(const std::string& filename) override {
 			this->generateBuffer();
 
-			stbi_write_png(filename.c_str(), targetSize, targetSize, 4, this->bitmap.data(), sizeof(Color) * targetSize);
+			stbi_write_png((filename + ".png").c_str(), targetSize, targetSize, 4, this->bitmap.data(), sizeof(Color) * targetSize);
 		}
 
 };

src/renderers/PixelRenderer.hpp

@@ -2,29 +2,29 @@
 
 #include <math.h>
 #include <iostream>
+#include <cassert>
 
-#include "Renderer.hpp"
 #define STB_IMAGE_WRITE_IMPLEMENTATION
-#include "stb_image_write.hpp"
+#include <stb_image_write.hpp>
+
+#include "util.hpp"
+#include "Renderer.hpp"
 
 namespace massivedynamic {
-	typedef uint32_t Color;
 
 	class PixelRenderer : public Renderer {
 		protected:
 		 	size_t pixelSize;
+			size_t border;
 			std::vector<Color> bitmap;
 
 			void drawPixelScaled(size_t x, size_t y, Color color) {
 				size_t pixelSize = this->pixelSize;
 
-				if (pixelSize < 1) {
-					std::cerr << "ERROR: output file size is too small" << std::endl;
-					exit(1);
-				}
+				assert(pixelSize > 1 && "ERROR: output file size is too small");
 
-				size_t absoluteX = pixelSize * x + pixelSize;
-				size_t absoluteY = pixelSize * y + pixelSize;
+				size_t absoluteX = pixelSize * x + this->border;
+				size_t absoluteY = pixelSize * y + this->border;
 
 				for (size_t localY = absoluteY; localY < absoluteY + pixelSize; localY++) {
 					for (size_t localX = absoluteX; localX < absoluteX + pixelSize; localX++) {
@@ -38,17 +38,13 @@ namespace massivedynamic {
 				WHITE = 0xFFFFFFFF
 			};
 
-			PixelRenderer(const std::vector<bool>& pixels, size_t sourceSize, size_t targetSize) : Renderer(pixels, sourceSize, targetSize), pixelSize(0) {
-				this->targetSize = this->targetSize == 0 ? (sourceSize + 2) * 2 : this->targetSize;
-
-				// here we make shure, `targetSize` will be a multiple of `sourceSize`	
-				this->pixelSize = round(static_cast<float>(this->targetSize) / static_cast<float>(this->sourceSize + 2));
-				this->targetSize = (this->sourceSize + 2) * this->pixelSize;
-
-				this->bitmap = std::vector<Color>(this->targetSize * this->targetSize, Colors::WHITE);
-			}
+			PixelRenderer(const std::vector<bool>& pixels, size_t sourceSize, size_t targetSize) :
+					Renderer(pixels, sourceSize, targetSize == 0 ? (sourceSize + 2) * 2 : targetSize),
+					pixelSize(round(static_cast<float>(this->targetSize) / static_cast<float>(this->sourceSize + 2))),
+					border(round(static_cast<float>(this->targetSize - this->pixelSize * this->sourceSize) / 2.0f)),
+					bitmap(std::vector<Color>(this->targetSize * this->targetSize, Colors::WHITE)) {}
 
-			void generateBuffer() {
+			virtual void generateBuffer() {
 				for (size_t y = 0; y < sourceSize; y++) {
 					for (size_t x = 0; x < sourceSize; x++) {
 						if (!pixels.at(y * sourceSize + x))

src/renderers/SVGRenderer.hpp

@@ -17,14 +17,16 @@ namespace massivedynamic {
 					this->targetSize = sourceSize * (2 * SVGRenderer::BORDER_WIDTH);
 			}
 			virtual void render(const std::string& filename) override {
-				std::stringstream file;
+				std::ofstream file;
+				file.open(filename + ".svg");
 
 				std::string base = R"EOF(<?xml version="1.0" encoding="utf-8"?>
-<svg version="1.1" id="qrcode" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
-				)EOF";
+<!-- Generator: Massive Dynamic qr, massivedynamic::SVGRenderer  -->
+<svg version="1.1" id="qrcode" xmlns="http://www.w3.org/2000/svg" x="0" y="0"
+        )EOF";
 
 				file << base;
-				file << "viewBox=\"0 0 " << this->targetSize << " " << this->targetSize << "\"  xml:space=\"preserve\">" << '\n';
+				file << "viewBox=\"0 0 " << this->targetSize << " " << this->targetSize << "\" width=\"" << this->targetSize << "\" height=\"" << this->targetSize << "\" xml:space=\"preserve\">" << '\n';
 				file << "    <rect x=\"0\" y=\"0\" width=\"" << this->targetSize << "\" height=\"" << this->targetSize << "\" style=\"fill: white;\" />" << '\n';
 				float pixelSize = static_cast<float>(this->targetSize) / static_cast<float>(this->sourceSize + 2);
 
@@ -38,14 +40,11 @@ namespace massivedynamic {
 					}
 				}
 
-				file << "</svg>" << std::endl;
+				file << "</svg>\n";
 
-				std::ofstream outFile;
-				outFile.open(filename);
-				outFile << file.str();
-				outFile.close();
+				file.close();
 			}
 
 	};
 
-}
+}

src/util.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <stdint.h>
+
+#define UNUSED(var) (void) var;
+#define UNUSED_CASE(name) case name: break; 
+
+namespace massivedynamic {
+
+	using Color = uint32_t;
+
+}