ResourceLoader SteamChecker now return a ternary

Former-commit-id: 2ee274ebb2b61f39e93f6ff2306b5a326b158594

include/Nazara/Core/Enums.hpp

@@ -7,6 +7,26 @@
 #ifndef NAZARA_ENUMS_CORE_HPP
 #define NAZARA_ENUMS_CORE_HPP
 
+enum nzEndianness
+{
+	nzEndianness_Unknown = -1,
+
+	nzEndianness_BigEndian,
+	nzEndianness_LittleEndian,
+
+	nzEndianness_Max = nzEndianness_LittleEndian
+};
+
+enum nzErrorType
+{
+	nzErrorType_AssertFailed,
+	nzErrorType_Internal,
+	nzErrorType_Normal,
+	nzErrorType_Warning,
+
+	nzErrorType_Max = nzErrorType_Warning
+};
+
 enum nzPlugin
 {
 	nzPlugin_Assimp,
@@ -52,26 +72,6 @@ enum nzProcessorVendor
 	nzProcessorVendor_Max = nzProcessorVendor_Vortex
 };
 
-enum nzEndianness
-{
-	nzEndianness_Unknown = -1,
-
-	nzEndianness_BigEndian,
-	nzEndianness_LittleEndian,
-
-	nzEndianness_Max = nzEndianness_LittleEndian
-};
-
-enum nzErrorType
-{
-	nzErrorType_AssertFailed,
-	nzErrorType_Internal,
-	nzErrorType_Normal,
-	nzErrorType_Warning,
-
-	nzErrorType_Max = nzErrorType_Warning
-};
-
 enum nzStreamOptionFlags
 {
 	nzStreamOption_None = 0x0,
@@ -79,4 +79,13 @@ enum nzStreamOptionFlags
 	nzStreamOption_Text = 0x1
 };
 
+enum nzTernary
+{
+	nzTernary_False,
+	nzTernary_True,
+	nzTernary_Unknown,
+
+	nzTernary_Max = nzTernary_Unknown
+};
+
 #endif // NAZARA_ENUMS_CORE_HPP

include/Nazara/Core/ResourceLoader.hpp

@@ -7,6 +7,7 @@
 #ifndef NAZARA_RESOURCELOADER_HPP
 #define NAZARA_RESOURCELOADER_HPP
 
+#include <Nazara/Core/Enums.hpp>
 #include <Nazara/Core/String.hpp>
 #include <list>
 #include <tuple>
@@ -19,7 +20,7 @@ class NzResourceLoader
 	public:
 		using ExtensionGetter = bool (*)(const NzString& extension);
 		using FileLoader = bool (*)(Type* resource, const NzString& filePath, const Parameters& parameters);
-		using StreamChecker = bool (*)(NzInputStream& stream, const Parameters& parameters);
+		using StreamChecker = nzTernary (*)(NzInputStream& stream, const Parameters& parameters);
 		using StreamLoader = bool (*)(Type* resource, NzInputStream& stream, const Parameters& parameters);
 
 		static bool IsExtensionSupported(const NzString& extension);

include/Nazara/Core/ResourceLoader.inl

@@ -64,17 +64,25 @@ bool NzResourceLoader<Type, Parameters>::LoadFromFile(Type* resource, const NzSt
 			}
 		}
 
+		nzTernary recognized = nzTernary_Unknown;
 		if (fileLoader)
 		{
 			if (checkFunc)
 			{
 				file.SetCursorPos(0);
 
-				if (!checkFunc(file, parameters))
+				recognized = checkFunc(file, parameters);
+				if (recognized == nzTernary_False)
 					continue;
+				else
+					found = true;
+			}
+			else
+			{
+				recognized = nzTernary_Unknown;
+				found = true;
 			}
 
-			found = true;
 			if (fileLoader(resource, filePath, parameters))
 				return true;
 		}
@@ -82,17 +90,20 @@ bool NzResourceLoader<Type, Parameters>::LoadFromFile(Type* resource, const NzSt
 		{
 			file.SetCursorPos(0);
 
-			if (!checkFunc(file, parameters))
+			recognized = checkFunc(file, parameters);
+			if (recognized == nzTernary_False)
 				continue;
+			else if (recognized == nzTernary_True)
+				found = true;
 
 			file.SetCursorPos(0);
 
-			found = true;
 			if (streamLoader(resource, file, parameters))
 				return true;
 		}
 
-		NazaraWarning("Loader failed");
+		if (recognized == nzTernary_True)
+			NazaraWarning("Loader failed");
 	}
 
 	if (found)
@@ -138,18 +149,21 @@ bool NzResourceLoader<Type, Parameters>::LoadFromStream(Type* resource, NzInputS
 		stream.SetCursorPos(streamPos);
 
 		// Le loader supporte-t-il les données ?
-		if (!checkFunc(stream, parameters))
+		nzTernary recognized = checkFunc(stream, parameters);
+		if (recognized == nzTernary_False)
 			continue;
+		else if (recognized == nzTernary_True)
+			found = true;
 
 		// On repositionne le stream à son ancienne position
 		stream.SetCursorPos(streamPos);
 
 		// Chargement de la ressource
-		found = true;
 		if (streamLoader(resource, stream, parameters))
 			return true;
 
-		NazaraWarning("Loader failed");
+		if (recognized == nzTernary_True)
+			NazaraWarning("Loader failed");
 	}
 
 	if (found)

src/Nazara/Audio/Loaders/sndfile/Loader.cpp

@@ -69,7 +69,7 @@ namespace
 		return supportedExtensions.find(extension) != supportedExtensions.end();
 	}
 
-	bool Check(NzInputStream& stream, const NzSoundBufferParams& parameters)
+	nzTernary Check(NzInputStream& stream, const NzSoundBufferParams& parameters)
 	{
 		NazaraUnused(parameters);
 
@@ -78,10 +78,10 @@ namespace
 		if (file)
 		{
 			sf_close(file);
-			return true;
+			return nzTernary_True;
 		}
 		else
-			return false;
+			return nzTernary_False;
 	}
 
 	bool Load(NzSoundBuffer* soundBuffer, NzInputStream& stream, const NzSoundBufferParams& parameters)

src/Nazara/Graphics/Loaders/Mesh/Loader.cpp

@@ -11,12 +11,12 @@
 
 namespace
 {
-	bool Check(NzInputStream& stream, const NzModelParameters& parameters)
+	nzTernary Check(NzInputStream& stream, const NzModelParameters& parameters)
 	{
 		NazaraUnused(stream);
 		NazaraUnused(parameters);
 
-		return true; ///FIXME: Pas bon
+		return nzTernary_Unknown;
 	}
 
 	bool Load(NzModel* model, NzInputStream& stream, const NzModelParameters& parameters)

src/Nazara/Graphics/Loaders/OBJ/Loader.cpp

@@ -23,12 +23,12 @@ namespace
 		return (extension == "obj");
 	}
 
-	bool Check(NzInputStream& stream, const NzModelParameters& parameters)
+	nzTernary Check(NzInputStream& stream, const NzModelParameters& parameters)
 	{
 		NazaraUnused(stream);
 		NazaraUnused(parameters);
 
-		return true; ///FIXME: Pas bon
+		return nzTernary_Unknown;
 	}
 
 	bool Load(NzModel* model, NzInputStream& stream, const NzModelParameters& parameters)

src/Nazara/Renderer/Loaders/Texture/Loader.cpp

@@ -10,12 +10,12 @@
 
 namespace
 {
-	bool Check(NzInputStream& stream, const NzMaterialParams& parameters)
+	nzTernary Check(NzInputStream& stream, const NzMaterialParams& parameters)
 	{
 		NazaraUnused(stream);
 		NazaraUnused(parameters);
 
-		return true; ///FIXME: Pas bon
+		return nzTernary_Unknown;
 	}
 
 	bool Load(NzMaterial* material, NzInputStream& stream, const NzMaterialParams& parameters)

src/Nazara/Utility/Loaders/MD2/Loader.cpp

@@ -24,20 +24,23 @@ namespace
 		return (extension == "md2");
 	}
 
-	bool Check(NzInputStream& stream, const NzMeshParams& parameters)
+	nzTernary Check(NzInputStream& stream, const NzMeshParams& parameters)
 	{
 		NazaraUnused(parameters);
 
 		nzUInt32 magic[2];
-		if (stream.Read(&magic[0], 2*sizeof(nzUInt32)) != 2*sizeof(nzUInt32))
-			return false;
+		if (stream.Read(&magic[0], 2*sizeof(nzUInt32)) == 2*sizeof(nzUInt32))
+		{
+			#ifdef NAZARA_BIG_ENDIAN
+			NzByteSwap(&magic[0], sizeof(nzUInt32));
+			NzByteSwap(&magic[1], sizeof(nzUInt32));
+			#endif
 
-		#ifdef NAZARA_BIG_ENDIAN
-		NzByteSwap(&magic[0], sizeof(nzUInt32));
-		NzByteSwap(&magic[1], sizeof(nzUInt32));
-		#endif
+			if (magic[0] == md2Ident && magic[1] == 8)
+				return nzTernary_True;
+		}
 
-		return magic[0] == md2Ident && magic[1] == 8;
+		return nzTernary_False;
 	}
 
 	bool Load(NzMesh* mesh, NzInputStream& stream, const NzMeshParams& parameters)

src/Nazara/Utility/Loaders/MD5Anim/Loader.cpp

@@ -13,7 +13,7 @@ namespace
 		return (extension == "md5anim");
 	}
 
-	bool Check(NzInputStream& stream, const NzAnimationParams& parameters)
+	nzTernary Check(NzInputStream& stream, const NzAnimationParams& parameters)
 	{
 		NzMD5AnimParser parser(stream, parameters);
 		return parser.Check();

src/Nazara/Utility/Loaders/MD5Anim/Parser.cpp

@@ -32,16 +32,19 @@ NzMD5AnimParser::~NzMD5AnimParser()
 		m_stream.SetStreamOptions(m_streamFlags);
 }
 
-bool NzMD5AnimParser::Check()
+nzTernary NzMD5AnimParser::Check()
 {
-	if (!Advance(false))
-		return false;
+	if (Advance(false))
+	{
+		unsigned int version;
+		if (std::sscanf(&m_currentLine[0], " MD5Version %u", &version) == 1)
+		{
+			if (version == 10)
+				return nzTernary_True;
+		}
+	}
 
-	unsigned int version;
-	if (std::sscanf(&m_currentLine[0], " MD5Version %u", &version) != 1)
-		return false;
-
-	return version == 10;
+	return nzTernary_False;
 }
 
 bool NzMD5AnimParser::Parse(NzAnimation* animation)

src/Nazara/Utility/Loaders/MD5Anim/Parser.hpp

@@ -21,7 +21,7 @@ class NzMD5AnimParser
 		NzMD5AnimParser(NzInputStream& stream, const NzAnimationParams& parameters);
 		~NzMD5AnimParser();
 
-		bool Check();
+		nzTernary Check();
 		bool Parse(NzAnimation* animation);
 
 	private:

src/Nazara/Utility/Loaders/MD5Mesh/Loader.cpp

@@ -13,7 +13,7 @@ namespace
 		return (extension == "md5mesh");
 	}
 
-	bool Check(NzInputStream& stream, const NzMeshParams& parameters)
+	nzTernary Check(NzInputStream& stream, const NzMeshParams& parameters)
 	{
 		NzMD5MeshParser parser(stream, parameters);
 		return parser.Check();

src/Nazara/Utility/Loaders/MD5Mesh/Parser.cpp

@@ -36,16 +36,19 @@ NzMD5MeshParser::~NzMD5MeshParser()
 		m_stream.SetStreamOptions(m_streamFlags);
 }
 
-bool NzMD5MeshParser::Check()
+nzTernary NzMD5MeshParser::Check()
 {
-	if (!Advance(false))
-		return false;
+	if (Advance(false))
+	{
+		unsigned int version;
+		if (std::sscanf(&m_currentLine[0], " MD5Version %u", &version) == 1)
+		{
+			if (version == 10)
+				return nzTernary_True;
+		}
+	}
 
-	unsigned int version;
-	if (std::sscanf(&m_currentLine[0], "MD5Version %u", &version) != 1)
-		return false;
-
-	return version == 10;
+	return nzTernary_False;
 }
 
 bool NzMD5MeshParser::Parse(NzMesh* mesh)

src/Nazara/Utility/Loaders/MD5Mesh/Parser.hpp

@@ -21,7 +21,7 @@ class NzMD5MeshParser
 		NzMD5MeshParser(NzInputStream& stream, const NzMeshParams& parameters);
 		~NzMD5MeshParser();
 
-		bool Check();
+		nzTernary Check();
 		bool Parse(NzMesh* mesh);
 
 	private:

src/Nazara/Utility/Loaders/PCX/Loader.cpp

@@ -44,15 +44,18 @@ namespace
 		return (extension == "pcx");
 	}
 
-	bool Check(NzInputStream& stream, const NzImageParams& parameters)
+	nzTernary Check(NzInputStream& stream, const NzImageParams& parameters)
 	{
 		NazaraUnused(parameters);
 
 		nzUInt8 manufacturer;
-		if (stream.Read(&manufacturer, 1) != 1)
-			return false;
+		if (stream.Read(&manufacturer, 1) == 1)
+		{
+			if (manufacturer == 0x0a)
+				return nzTernary_True;
+		}
 
-		return manufacturer == 0x0a;
+		return nzTernary_False;
 	}
 
 	bool Load(NzImage* image, NzInputStream& stream, const NzImageParams& parameters)

src/Nazara/Utility/Loaders/STB/Loader.cpp

@@ -40,12 +40,15 @@ namespace
 		return supportedExtensions.find(extension) != supportedExtensions.end();
 	}
 
-	bool Check(NzInputStream& stream, const NzImageParams& parameters)
+	nzTernary Check(NzInputStream& stream, const NzImageParams& parameters)
 	{
 		NazaraUnused(parameters);
 
 		int width, height, bpp;
-		return stbi_info_from_callbacks(&callbacks, &stream, &width, &height, &bpp);
+		if (stbi_info_from_callbacks(&callbacks, &stream, &width, &height, &bpp))
+			return nzTernary_True;
+		else
+			return nzTernary_False;
 	}
 
 	bool Load(NzImage* image, NzInputStream& stream, const NzImageParams& parameters)