C++ rString类代码示例

NETWORK_API void NetworkUtility::GetIPAndPortFromString( const rString& input, rString& outIP, unsigned short& outPort )
{
	if ( input == "" )
		return;

	outIP	= "";
	outPort = INVALID_PORT;

	size_t colonCount = std::count( input.begin(), input.end(), ':' );

	if ( colonCount == 1 )
	{
		outIP = GetIPFromString( input );
		size_t colonPosition = input.find( ':' );
		rString portString = input.substr( colonPosition + 1 );
		if ( StringUtility::IsDigitsOnly( portString ) )
		{
			outPort = GetPortFromString( portString );
		}
	}
	else if ( StringUtility::IsDigitsOnly( input ) )
	{
		outPort = GetPortFromString( input );
	}
	else
	{
		outIP = GetIPFromString( input );
	}
}

//+---------------------------------------------------+
//|bool CreateSample(const rString &path, AudioBuffer* &buffer, const SDL_AudioSpec* sysSpec)
//\---------------------------------------------------+
bool SoundSDL::CreateSample(const rString &path, AudioBuffer* &buffer, const SDL_AudioSpec* sysSpec)
{
	///Load the wav and recieve the buffer containing the audio data
	if(!m_AudioFile->LoadSample(path.c_str(), m_BufferData))
	{
		fprintf(stderr, "Failed to load sample %s\n", path.c_str());
		return false;
	}

	buffer->chunkSize = buffer->spec.size;

	///Create audio converter using the data from the wav header
	int ret = RebuildAudioCVT(m_BufferData, sysSpec);
	if(ret < 0)
	{
		fprintf(stderr, "Failed to build converter: %s\n", path.c_str());
		return false;
	}

	//Convert the loaded data into matching engine format
	//If ret == 1 the loaded audio needs not to be converted
	if(ret == 1)
	{
		if(!ConvertBufferData(buffer, m_AudioCVT))
		{
			fprintf(stderr, "Failed to convert audio: %s\n", path.c_str());
			return false;
		}
	}

	return true;
}

/// <summary>
/// Registers a type of logging message.
/// <para>This function should be run once for each type of message the programmer creates.</para>
/// <para>If a parent is supplied the supplied <paramref name="name"/> will be a child to this parent. If a parent
/// is registered with <see cref="Logger::RegisterInterest"/> the childs logging messages will
/// also be seen.</para>
/// <para><paramref name="parent"/> can be left empty if a parent is not desired.</para>
/// <remarks>The parent name supplied with <paramref name="parent"/> needs to be registered before
/// any children can be added</remarks>
/// </summary>
/// <param name="name">Name of the logging message</param>
/// <param name="parent">Parent of the supplied name (optional)</param>
void Logger::RegisterType ( const rString& name, const rString& parent )
{
	if ( parent != "" )
	{
		// If a parent is supplied, find it
		rMap<std::string, LogType>::iterator it = LogTypes.find ( parent.c_str( ) );

		// Check if parent was found
		if ( it != LogTypes.end() )
		{
			// Create LogType, emplace it and record the child in the parent.
			LogType lt;
			lt.Parent = parent;
			LogTypes.emplace ( name.c_str( ), lt );
			it->second.Children.push_back ( name );
		}
		else
		{
			cerr << Colors::BRed << "Failed to find parent log type for log type: " << name << Colors::Reset <<
				 endl;
			return;
		}
	}
	else
	{
		// No parent was supplied so create LogType with no parent.
		LogType lt;
		lt.Parent = "";
		LogTypes.emplace ( name.c_str( ), lt );
	}
}

//+----------------------------------------------------------------------------+
//|bool Initialize(AudioEngine* engine, const rString &path, SoundType type)
//\----------------------------------------------------------------------------+
bool SoundSDL::Initialize(AudioEngine* engine, const rString &path, SoundType type)
{
	AudioEngineSDL* audioEngine = reinterpret_cast<AudioEngineSDL*>(engine);
	const SDL_AudioSpec* sysSpec = audioEngine->GetSystemSpec();
	m_AudioEngine = audioEngine;
	m_Type = type;
	m_Name = path;
	m_ChunkSize = sysSpec->size;

	m_AudioCVT = pNew(SDL_AudioCVT);
	m_BufferData = tNew(AudioBuffer);
	m_AudioFile = nullptr;

	///Check which file format the requested audiofile are
	///Only wav and ogg are supported

	///Is wave file
	if(path.find(".wav", 0) != std::string::npos)
	{ 
		m_AudioFile = pNew(WavFileReader);
	}
	///Is ogg file
	else if(path.find(".ogg", 0) != std::string::npos)
	{ 
		m_AudioFile = pNew(OggFileReader);
	}
	///Not supported format
	else
	{
		fprintf(stderr, "SoundSDL. Trying to load unsupported file format %s \n", path.c_str());
		return false;
	}

	m_AudioFile->Initialize();

	///Read as sample, read everything into buffer
	if(type == SoundType::SAMPLE)
	{
		CreateSample(path, m_BufferData, sysSpec);
	}
	///Read as stream, prepare for buffer streaming
	else if(type == SoundType::STREAM)
	{
		CreateStream(path, m_BufferData, sysSpec);
	}
	else
	{
		///This should not happend..
		fprintf(stderr, "SoundSDL. Unexpected error loading %s while setting sound type \n", path.c_str());
		return false;
	}

	return true;
}

rString NetworkUtility::GetIPFromDNS( const rString& input )
{
	rString ip = "";
	size_t colonPos = input.find_first_of( ":" );
	rString dns = input;
	if ( colonPos != std::string::npos )
		dns = input.substr( 0, colonPos );

	addrinfo*	result	= nullptr;
	addrinfo	hints;

	memset(&hints, 0, sizeof( addrinfo ) );
	hints.ai_family		= AF_INET; // TODODB: When IPv6 implemented change this to AF_UNSPEC, for now force IPv4
	hints.ai_socktype	= SOCK_STREAM;
	hints.ai_protocol	= IPPROTO_TCP;

#if PLATFORM == PLATFORM_WINDOWS
	DWORD returnValue;
#elif PLATFORM == PLATFORM_LINUX
	int returnValue;
#endif

	returnValue	= getaddrinfo( dns.c_str(), nullptr, &hints, &result );

	if ( returnValue != 0 )
	{
		// TODODB: Handle dns lookup failure somehow
		Logger::Log( "Failed DNS lookup with error: " + rString( gai_strerror( returnValue ) ), "Network", LogSeverity::WARNING_MSG );
		return ip;
	}

	// result will be a linked list, use the first entry
	void *addr;
	if(result->ai_family == AF_INET)
	{
		sockaddr_in *ipv4 = (struct sockaddr_in *)result->ai_addr;
		addr = &(ipv4->sin_addr);

		char ipstr[INET_ADDRSTRLEN];
		// convert the IP to a string and print it:
		inet_ntop(result->ai_family, addr, ipstr, sizeof( ipstr ) );
		ip = rString( ipstr );
	}
	// TODODB: Handle IPv6 when implemented and move inet_ntop to relevant place
	//} else { // Is IPv6
	//struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
	//addr = &(ipv6->sin6_addr);
	//}

	// Free the linked list	
	freeaddrinfo( result );
	return ip;
}

unsigned int rOpenGLGraphicsDevice::CreateShaderProgram(const rString& vertex, const rString& fragment){
    GLuint vertexShader;
    GLuint fragmentShader;
    GLuint programObject;
    GLint linked;


    vertexShader = CompileShader(GL_VERTEX_SHADER, vertex.c_str());

    if (!vertexShader)
	    return 0;

    fragmentShader = CompileShader(GL_FRAGMENT_SHADER, fragment.c_str());

    if (!fragmentShader){
	    glDeleteShader(vertexShader);
	    return 0;
    }

    programObject = glCreateProgram();

    if (!programObject)
	    return 0;

    glAttachShader(programObject, vertexShader);
    glAttachShader(programObject, fragmentShader);

    glLinkProgram(programObject);
    glGetProgramiv(programObject, GL_LINK_STATUS, &linked);

    if (!linked){
	GLint infoLen = 0;
	glGetProgramiv(programObject, GL_INFO_LOG_LENGTH, &infoLen);

	if (infoLen > 1){
	     char* infoLog = new char[infoLen];

	     glGetProgramInfoLog(programObject, infoLen, NULL, infoLog);
	     m_lastError.assign(infoLog, infoLen);         

	     delete [] infoLog;
	}

	glDeleteProgram(programObject);
	return 0;
    }

    glDeleteShader(vertexShader);
    glDeleteShader(fragmentShader);

    m_lastError.clear();
    return programObject;
}

rString gfx::MaterialBank::GetDir(rString& filename)
{
	bool found = false;
	for (int i = static_cast<int>(filename.size()); i > 0; i--)
	{
		if (filename.c_str()[i] == '/' || filename.c_str()[i] == '\\' )
			found = true;
		if (!found)
		{
			filename.erase(i);
		}

	}
	return filename;
}

rString gfx::ShaderProgram::GetDir ( rString filename )
{
    bool found = false;
    for ( int i = static_cast<int> ( filename.size() ); i > 0; i-- )
    {
        if ( filename.c_str() [i] == '/' )
        {
            found = true;
        }
        if ( !found )
        {
            filename.erase ( i );
        }
    }
    return filename;
}

//Creates a shader with defines
void gfx::ShaderProgram::CreateShader ( ifstream* FileStream, GLenum shaderType, const rString& filename,bool print, ShaderDefineContainer& container )
{
    rString line;
    size_t found;
    rString shaderText;
	getline(*FileStream, line);
	shaderText += line;
	shaderText += "\n";
	shaderText += container.GetAllDefineLines();
    shaderText += container.GetDefinesShaderStage ( shaderType );
    bool end = false;
    while ( !end )
    {
        getline ( *FileStream, line );
        //search for the end of the shader
        found = line.find ( "#include " );
		if ( found != rString::npos )
        {
            int i = static_cast<int> ( found ) + 9; //found + "#include "
            rString s;
            while ( i < static_cast<int> ( line.length() ) )
            {
                s += line[i];
                i++;
            }
            rString str = GetDir ( rString ( filename.c_str() ) ) + s;
            shaderText += LoadText ( str.c_str() );
            shaderText += "\n";
        }
        else
        {
            found = line.find ( "#end_shader" );
			if ( found != rString::npos )
            {
                //break loop
                end = true;
                break;
            }
            else if ( FileStream->eof() )
            {
				Logger::Log( "Could not find end of file " + filename, "ShaderProgram", LogSeverity::ERROR_MSG );
                return;
            }
            else
            {
                shaderText += line;
                shaderText += '\n';
            }

        }

    }
    if ( shaderText.length() > 0 )
    {
		Shader* shader = tNew( Shader );
        shader->CreateFromString ( shaderText, shaderType, filename,print );
        m_Shaders.push_back ( shader );
        shaderText.clear();
    }
}

void ruiStylesheetLoader::ParseColorProperty(const rString& name, const rString& value){
	int r,g,b,a;

	if (sscanf(value.c_str(), "%i %i %i %i", &r, &g, &b, &a) == 4){
		m_currentStyle->SetColor(name, rColor(r,g,b,a));
	}
}

	void WrapText(Face* face, const rString& text, const rSize& size, std::function<void(Glyph**, size_t, int, int)> wordFunc){
		std::vector<Font::Glyph*> wordGlyphs;

		int xPos = 0;
		int yPos = face->GetAscender();

		int wordWidth = 0;
		int spaceLeft = size.x;

		int lineCount = 0;

		for (size_t i = 0; i < text.size(); i++){
			int c = text[i];

			if (c == '\n'){
				if (wordWidth > spaceLeft){ //current word will not fit on this line
					yPos += face->GetLineHeight();
					xPos = 0;
				}

				wordFunc(wordGlyphs.data(), wordGlyphs.size(), xPos, yPos);
				wordGlyphs.clear();

				yPos += face->GetLineHeight();
				xPos = 0;
				spaceLeft = size.x;
				wordWidth = 0;

			}
			else{
				Font::Glyph* glyph = face->GetGlyph(c);

				if (c == ' '){
					if (wordWidth + glyph->advance > spaceLeft){ //current word will not fit on this line
						yPos += face->GetLineHeight();
						xPos = 0;
						spaceLeft = size.x;
					}

					wordFunc(wordGlyphs.data(), wordGlyphs.size(), xPos, yPos);
					wordGlyphs.clear();

					spaceLeft -= wordWidth + glyph->advance;
					xPos += wordWidth + glyph->advance;
					wordWidth = 0;

				}
				else{
					wordWidth += glyph->advance;
					wordGlyphs.push_back(glyph);
				}
			}
		}

		if (wordGlyphs.size() > 0){
			wordFunc(wordGlyphs.data(), wordGlyphs.size(), xPos, yPos);
			wordGlyphs.clear();
		}
	}

rString gfx::TextureAtlas::GetDir ( rString str )
{
    bool found = false;
    for ( int i = static_cast<int> ( str.size() ); i > 0; i-- )
    {
        if ( str.c_str() [i] == '/' )
        {
            found = true;
        }
        if ( !found )
        {
            str.erase ( i );
        }

    }
    return str;
}

	void GUIEngine::SetWindowClickThrough( const rString& name, bool clickThrough )
	{
		auto windowIt = m_Windows.find( name ) ;
		if( windowIt != m_Windows.end() )
			windowIt->second->SetClickThrough( clickThrough );
		else
			Logger::Log( "Couldn't get window: " + rString( name.c_str()) + ", it doesn't exist.", "GUIEngine", LogSeverity::ERROR_MSG  );
	}

ruiOverlayLoader::ruiParseItemMethod ruiOverlayLoader::GetParseItemMethod (const rString& itemName){
	rString item = itemName;
	
	for (size_t i =0; i < itemName.size(); i++)
		item[i] = tolower(itemName[i]);

	if (s_parseItemMap.count(item))
		return s_parseItemMap[item];
	else
		return NULL;
}

bool KeyBindingCollection::AddMappingWithName( const rString& keyName, ActionIdentifier action, KeyBindingType keyBindType, bool overwrite,
											   bool clearConflicting, rString* errorString ) {
	SDL_Scancode scanCode = SDL_GetScancodeFromName( keyName.c_str() );
	if ( scanCode != SDL_SCANCODE_UNKNOWN ) {
		return AddMappingWithScancode( scanCode, action, keyBindType, overwrite, clearConflicting, errorString );
	} else {
		LogInput( "Failed to get scancode from name: " + keyName, "KeyBindings", LogSeverity::WARNING_MSG );
		if ( errorString != nullptr ) {
			*errorString = "Failed to get scancode from name: " + keyName;
		}
		return false;
	}
}