basic key/value parsing

struct ConfigReader
{
    ConfigReader( const StringView& _it ) : it( _it.after_all( SPACE_CHARS ) ){}
    bool Read( StringView& key, StringView& value )
    {
        while( it.size() )
        {
            key = it.until_any( SPACE_CHARS );
            if( key.ch() == '#' )
            {
                it = it.after( "\n" ).after_all( SPACE_CHARS );
                continue;
            }

            it.skip( key.size() );
            it.after_all( HSPACE_CHARS );

            value = it.until( "\n" );
            it.skip( value.size() );
            value.trim( SPACE_CHARS );

            it = it.after_all( SPACE_CHARS );

            return key.size() != 0;
        }
        return false;
    }
    StringView it;
};

// usage code
ConfigReader cr( text );
StringView key, value;
while( cr.Read( key, value ) )
{
    if( key == "game" )
    {
        if( value.size() )
        {
            g_GameLibName = value;
            LOG << "CONFIG: Game library: " << value;
        }
    }
    else if( key == "dir" )
    {
        if( value.size() )
        {
            g_GameDir = value;
            LOG << "CONFIG: Game directory: " << value;
        }
    }
    else if( key == "dir2" )
    {
        if( value.size() )
        {
            g_GameDir2 = value;
            LOG << "CONFIG: Game directory #2: " << value;
        }
    }
    else if( key == "renderer" )
    {
        if( value.size() )
        {
            g_RendererName = value;
            LOG << "CONFIG: Renderer: " << value;
        }
    }
    else
    {
        LOG_WARNING << "Unknown key (" << key << " = " << value << ")";
    }
}