Utility: Add MTL exporting

Former-commit-id: b524c2d445f4c5cdadedabc3a9c38307dbfecb9b [formerly d65160f4e3f2fa2c7c9ddd151c73990c6712b4c1]
Former-commit-id: 7ccdf043ccf793d3d9a5c9d93c65919ac015b52c

include/Nazara/Utility/Formats/MTLParser.hpp

@@ -19,6 +19,22 @@ namespace Nz
 	class NAZARA_UTILITY_API MTLParser
 	{
 		public:
+			struct Material;
+
+			MTLParser() = default;
+			~MTLParser() = default;
+
+			inline Material* AddMaterial(const String& matName);
+
+			inline void Clear();
+
+			inline const Material* GetMaterial(const String& materialName) const;
+			inline const std::unordered_map<String, Material>& GetMaterials() const;
+
+			bool Parse(Stream& stream);
+
+			bool Save(Stream& stream) const;
+
 			struct Material
 			{
 				Color ambient = Color::White;
@@ -39,27 +55,26 @@ namespace Nz
 				unsigned int illumModel = 0;
 			};
 
-			MTLParser(Stream& stream$);
-			~MTLParser();
-
-			const Material* GetMaterial(const String& materialName) const;
-			const std::unordered_map<String, Material>& GetMaterials() const;
-
-			bool Parse();
-
 		private:
 			bool Advance(bool required = true);
-			void Error(const String& message);
-			void Warning(const String& message);
-			void UnrecognizedLine(bool error = false);
+			template<typename T> void Emit(const T& text) const;
+			inline void EmitLine() const;
+			template<typename T> void EmitLine(const T& line) const;
+			inline void Error(const String& message);
+			inline void Flush() const;
+			inline void Warning(const String& message);
+			inline void UnrecognizedLine(bool error = false);
 
 			std::unordered_map<String, Material> m_materials;
-			Stream& m_stream;
+			mutable Stream* m_currentStream;
 			String m_currentLine;
+			mutable StringStream m_outputStream;
 			bool m_keepLastLine;
 			unsigned int m_lineCount;
 			unsigned int m_streamFlags;
 	};
 }
 
+#include <Nazara/Utility/Formats/MTLParser.inl>
+
 #endif // NAZARA_FORMATS_MTLPARSER_HPP

include/Nazara/Utility/Formats/MTLParser.inl

@@ -0,0 +1,83 @@
+// Copyright (C) 2016 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Utility/Formats/MTLParser.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <Nazara/Utility/Debug.hpp>
+
+namespace Nz
+{
+	inline MTLParser::Material* MTLParser::AddMaterial(const String& matName)
+	{
+		return &m_materials[matName];
+	}
+
+	inline void MTLParser::Clear()
+	{
+		m_materials.clear();
+	}
+
+	inline const MTLParser::Material* MTLParser::GetMaterial(const String& materialName) const
+	{
+		auto it = m_materials.find(materialName);
+		if (it != m_materials.end())
+			return &it->second;
+		else
+			return nullptr;
+	}
+
+	inline const std::unordered_map<String, MTLParser::Material>& MTLParser::GetMaterials() const
+	{
+		return m_materials;
+	}
+
+	template<typename T>
+	void MTLParser::Emit(const T& text) const
+	{
+		m_outputStream << text;
+		if (m_outputStream.GetBufferSize() > 1024 * 1024)
+			Flush();
+	}
+
+	inline void MTLParser::EmitLine() const
+	{
+		Emit('\n');
+	}
+
+	template<typename T>
+	void MTLParser::EmitLine(const T& line) const
+	{
+		Emit(line);
+		Emit('\n');
+	}
+
+	inline void MTLParser::Error(const String& message)
+	{
+		NazaraError(message + " at line #" + String::Number(m_lineCount));
+	}
+
+	inline void MTLParser::Flush() const
+	{
+		m_currentStream->Write(m_outputStream);
+		m_outputStream.Clear();
+	}
+
+	inline void MTLParser::Warning(const String& message)
+	{
+		NazaraWarning(message + " at line #" + String::Number(m_lineCount));
+	}
+
+	inline void MTLParser::UnrecognizedLine(bool error)
+	{
+		String message = "Unrecognized \"" + m_currentLine + '"';
+
+		if (error)
+			Error(message);
+		else
+			Warning(message);
+	}
+}
+
+#include <Nazara/Utility/DebugOff.hpp>
+#include "MTLParser.hpp"

include/Nazara/Utility/Formats/OBJParser.hpp

@@ -52,6 +52,7 @@ namespace Nz
 
 			inline String* SetMaterialCount(std::size_t materialCount);
 			inline Mesh* SetMeshCount(std::size_t meshCount);
+			inline void SetMtlLib(const String& mtlLib);
 			inline Vector3f* SetNormalCount(std::size_t normalCount);
 			inline Vector4f* SetPositionCount(std::size_t positionCount);
 			inline Vector3f* SetTexCoordCount(std::size_t texCoordCount);

include/Nazara/Utility/Formats/OBJParser.inl

@@ -109,6 +109,11 @@ namespace Nz
 		return m_meshes.data();
 	}
 
+	inline void OBJParser::SetMtlLib(const String& mtlLib)
+	{
+		m_mtlLib = mtlLib;
+	}
+
 	inline Vector3f* OBJParser::SetNormalCount(std::size_t normalCount)
 	{
 		m_normals.resize(normalCount);