Introduced parameter class ExporterInput

src/exporters/Exporter.h

@@ -4,8 +4,23 @@
 #include "ContinuousTimeline.h"
 #include <boost/filesystem/path.hpp>
 
+class ExporterInput {
+public:
+	ExporterInput(
+		const boost::filesystem::path& inputFilePath,
+		const JoiningContinuousTimeline<Shape>& animation,
+		const ShapeSet& targetShapeSet) :
+		inputFilePath(inputFilePath),
+		animation(animation),
+		targetShapeSet(targetShapeSet) {}
+
+	boost::filesystem::path inputFilePath;
+	JoiningContinuousTimeline<Shape> animation;
+	ShapeSet targetShapeSet;
+};
+
 class Exporter {
 public:
 	virtual ~Exporter() {}
-	virtual void exportAnimation(const boost::filesystem::path& inputFilePath, const JoiningContinuousTimeline<Shape>& animation, const ShapeSet& targetShapeSet, std::ostream& outputStream) = 0;
+	virtual void exportAnimation(const ExporterInput& input, std::ostream& outputStream) = 0;
 };

src/exporters/JsonExporter.cpp

@@ -34,17 +34,17 @@ string escapeJsonString(const string& s) {
 	return result;
 }
 
-void JsonExporter::exportAnimation(const boost::filesystem::path& inputFilePath, const JoiningContinuousTimeline<Shape>& animation, const ShapeSet& targetShapeSet, std::ostream& outputStream) {
+void JsonExporter::exportAnimation(const ExporterInput& input, std::ostream& outputStream) {
 	// Export as JSON.
 	// I'm not using a library because the code is short enough without one and it lets me control the formatting.
 	outputStream << "{\n";
 	outputStream << "  \"metadata\": {\n";
-	outputStream << "    \"soundFile\": \"" << escapeJsonString(inputFilePath.string()) << "\",\n";
+	outputStream << "    \"soundFile\": \"" << escapeJsonString(input.inputFilePath.string()) << "\",\n";
-	outputStream << "    \"duration\": " << formatDuration(animation.getRange().getDuration()) << "\n";
+	outputStream << "    \"duration\": " << formatDuration(input.animation.getRange().getDuration()) << "\n";
 	outputStream << "  },\n";
 	outputStream << "  \"mouthCues\": [\n";
 	bool isFirst = true;
-	for (auto& timedShape : dummyShapeIfEmpty(animation, targetShapeSet)) {
+	for (auto& timedShape : dummyShapeIfEmpty(input.animation, input.targetShapeSet)) {
 		if (!isFirst) outputStream << ",\n";
 		isFirst = false;
 		outputStream << "    { \"start\": " << formatDuration(timedShape.getStart())

src/exporters/JsonExporter.h

@@ -4,5 +4,5 @@
 
 class JsonExporter : public Exporter {
 public:
-	void exportAnimation(const boost::filesystem::path& inputFilePath, const JoiningContinuousTimeline<Shape>& animation, const ShapeSet& targetShapeSet, std::ostream& outputStream) override;
+	void exportAnimation(const ExporterInput& input, std::ostream& outputStream) override;
 };

src/exporters/TsvExporter.cpp

@@ -1,14 +1,16 @@
 #include "TsvExporter.h"
 #include "targetShapeSet.h"
 
-void TsvExporter::exportAnimation(const boost::filesystem::path& inputFilePath, const JoiningContinuousTimeline<Shape>& animation, const ShapeSet& targetShapeSet, std::ostream& outputStream) {
+void TsvExporter::exportAnimation(const ExporterInput& input, std::ostream& outputStream) {
-	UNUSED(inputFilePath);
-
 	// Output shapes with start times
-	for (auto& timedShape : animation) {
+	for (auto& timedShape : input.animation) {
 		outputStream << formatDuration(timedShape.getStart()) << "\t" << timedShape.getValue() << "\n";
 	}
 
 	// Output closed mouth with end time
-	outputStream << formatDuration(animation.getRange().getEnd()) << "\t" << convertToTargetShapeSet(Shape::X, targetShapeSet) << "\n";
+	outputStream
+		<< formatDuration(input.animation.getRange().getEnd())
+		<< "\t"
+		<< convertToTargetShapeSet(Shape::X, input.targetShapeSet)
+		<< "\n";
 }

src/exporters/TsvExporter.h

@@ -4,6 +4,6 @@
 
 class TsvExporter : public Exporter {
 public:
-	void exportAnimation(const boost::filesystem::path& inputFilePath, const JoiningContinuousTimeline<Shape>& animation, const ShapeSet& targetShapeSet, std::ostream& outputStream) override;
+	void exportAnimation(const ExporterInput& input, std::ostream& outputStream) override;
 };
 

src/exporters/XmlExporter.cpp

@@ -7,22 +7,22 @@
 using std::string;
 using boost::property_tree::ptree;
 
-void XmlExporter::exportAnimation(const boost::filesystem::path& inputFilePath, const JoiningContinuousTimeline<Shape>& animation, const ShapeSet& targetShapeSet, std::ostream& outputStream) {
+void XmlExporter::exportAnimation(const ExporterInput& input, std::ostream& outputStream) {
 	ptree tree;
 
 	// Add metadata
-	tree.put("rhubarbResult.metadata.soundFile", inputFilePath.string());
+	tree.put("rhubarbResult.metadata.soundFile", input.inputFilePath.string());
-	tree.put("rhubarbResult.metadata.duration", formatDuration(animation.getRange().getDuration()));
+	tree.put("rhubarbResult.metadata.duration", formatDuration(input.animation.getRange().getDuration()));
 
 	// Add mouth cues
-	for (auto& timedShape : dummyShapeIfEmpty(animation, targetShapeSet)) {
+	for (auto& timedShape : dummyShapeIfEmpty(input.animation, input.targetShapeSet)) {
 		ptree& mouthCueElement = tree.add("rhubarbResult.mouthCues.mouthCue", timedShape.getValue());
 		mouthCueElement.put("<xmlattr>.start", formatDuration(timedShape.getStart()));
 		mouthCueElement.put("<xmlattr>.end", formatDuration(timedShape.getEnd()));
 	}
 
 #ifndef BOOST_VERSION	//present in version.hpp
-        #error "Could not detect Boost version."
+	#error "Could not detect Boost version."
 #endif
 
 #if BOOST_VERSION < 105600 // Support legacy syntax

src/exporters/XmlExporter.h

@@ -4,5 +4,5 @@
 
 class XmlExporter : public Exporter {
 public:
-	void exportAnimation(const boost::filesystem::path& inputFilePath, const JoiningContinuousTimeline<Shape>& animation, const ShapeSet& targetShapeSet, std::ostream& outputStream) override;
+	void exportAnimation(const ExporterInput& input, std::ostream& outputStream) override;
 };

src/main.cpp

@@ -184,7 +184,8 @@ int main(int platformArgc, char *platformArgv[]) {
 				outputFile = boost::in_place(outputFileName.getValue());
 				outputFile->exceptions(std::ifstream::failbit | std::ifstream::badbit);
 			}
-			exporter->exportAnimation(inputFilePath, animation, targetShapeSet, outputFile ? *outputFile : std::cout);
+			ExporterInput exporterInput = ExporterInput(inputFilePath, animation, targetShapeSet);
+			exporter->exportAnimation(exporterInput, outputFile ? *outputFile : std::cout);
 
 			logging::info("Exiting application normally.");
 		} catch (...) {