C++ (Cpp) CSG_String::Clear示例

示例#1

文件： metadata.cpp 项目： johanvdw/SAGA-GIS-git-mirror

//---------------------------------------------------------
bool CSG_HTTP::Request(const CSG_String &Request, CSG_String &Answer)
{
	wxInputStream *pStream = _Request(Request); if( !pStream ) { return( false ); }

	//if( pStream->GetSize() == ((size_t)-1) )
	//{
	//	delete(pStream);

	//	return( false );
	//}

	Answer.Clear();

	while( pStream->CanRead() )
	{
		char	Byte;

		pStream->Read(&Byte, sizeof(Byte));

		Answer	+= Byte;
	}

	delete(pStream);

	return( true );
}

示例#2

文件： shapes_ogis.cpp 项目： johanvdw/saga-debian

//---------------------------------------------------------
bool CSG_Shapes_OGIS_Converter::_WKT_Read_Polygon(const CSG_String &Text, CSG_Shape *pShape)
{
	CSG_String	Part;

	for(int i=0, Level=-2; i<(int)Text.Length(); i++)
	{
		if( Text[i] == '(' )
		{
			Level++;
		}
		else if( Text[i] == ')' )
		{
			if( Level == 0 )
			{
				Part	+= Text[i];
				_WKT_Read_Parts(Part, pShape);
				Part.Clear();
			}

			Level--;
		}

		if( Level >= 0 )
		{
			Part	+= Text[i];
		}
	}

	return( pShape->Get_Part_Count() > 0 );
}

示例#3

//---------------------------------------------------------
int CSG_ODBC_Connections::Get_Connections(CSG_String &Connections)
{
	CSG_Strings		s	= Get_Connections();

	Connections.Clear();

	for(int i=0; i<s.Get_Count(); i++)
	{
		Connections	+= CSG_String::Format(SG_T("%s|"), s[i].c_str());
	}

	return( s.Get_Count() );
}

示例#4

//---------------------------------------------------------
int CTL_Extract::Read_Text(const SG_Char *String, CSG_String &Text)
{
	int			n, Level;

	Text.Clear();

	for(n=0, Level=-1; String[n]!='\0' && Level<2; n++)
	{
		if( Level < 0 )
		{
			if( String[n] == '(' )
			{
				Level	= 0;
			}
			else if( isspace(String[n]) )
			{
				Level	= 2;	// exit !
			}
		}
		else if( Level == 0 )
		{
			switch( String[n] )
			{
			case '\"':
				Level	= 1;
				break;

			case ')':
				Level	= 2;
				break;
			}
		}
		else switch( String[n] )
		{
		case '\"':
			Level	= 0;
			break;

		case '\\':
			Text.Append(String[n++]);
			Text.Append(String[n]);
			break;

		default:
			Text.Append(String[n]);
			break;
		}
	}

	return( n );
}

示例#5

文件： sg_curl.cpp 项目： johanvdw/SAGA-GIS-git-mirror

//---------------------------------------------------------
bool CSG_CURL::Request(const CSG_String &Request, CSG_String &Answer)
{
	if( !is_Connected() ) { return( false ); }

	Answer.Clear();

	CSG_String	URL	= m_Server + "/" + Request;

	CURL_SET_OPT(1, CURLOPT_URL           , URL.b_str());
	CURL_SET_OPT(1, CURLOPT_FOLLOWLOCATION, 1L);
	CURL_SET_OPT(1, CURLOPT_WRITEFUNCTION , _Callback_Write_String);
	CURL_SET_OPT(1, CURLOPT_WRITEDATA     , &Answer);

	return( _Perform() );
}

示例#6

文件： mat_formula.cpp 项目： am2222/SAGA-GIS

//---------------------------------------------------------
const SG_Char * CSG_Formula::Get_Used_Variables(void)
{
	static CSG_String	ret;

	ret.Clear();

	for(int i=0; i<'z'-'a'; i++)
	{
		if( m_Vars_Used[i] == true )
		{
			ret.Append((SG_Char)(i + 'a'));
		}
	}

	return( ret );
}

示例#7

文件： api_file.cpp 项目： am2222/SAGA-GIS

//---------------------------------------------------------
bool			SG_Read_Line(FILE *Stream, CSG_String &Line)
{
	char	c;

	if( Stream && !feof(Stream) )
	{
		Line.Clear();

		while( !feof(Stream) && (c = fgetc(Stream)) != 0x0A && c != 0x0D )
		{
			Line.Append(c);
		}

		return( true );
	}

	return( false );
}

示例#8

文件： api_file.cpp 项目： am2222/SAGA-GIS

bool CSG_File::Scan(CSG_String &Value, SG_Char Separator) const
{
	if( m_pStream && !feof(m_pStream) )
	{
		int		c;

		Value.Clear();

		while( !feof(m_pStream) && (c = fgetc(m_pStream)) != Separator && c != EOF )
		{
			Value	+= c;
		}

		return( true );
	}

	return( false );
}

示例#9

文件： api_file.cpp 项目： am2222/SAGA-GIS

//---------------------------------------------------------
bool CSG_File::Read_Line(CSG_String &sLine)	const
{
	int		c;

	if( m_pStream && !feof(m_pStream) )
	{
		sLine.Clear();

		while( !feof(m_pStream) && (c = fgetc(m_pStream)) != 0x0A && c != EOF )
		{
			if( c != 0x0D )
			{
				sLine.Append(SG_STR_MBTOSG(c));
			}
		}

		return( true );
	}

	return( false );
}

示例#10

文件： decision_tree.cpp 项目： johanvdw/saga-debian

//---------------------------------------------------------
int CDecision_Tree::Get_Class(CSG_Parameters *pDecision, const TSG_Point &Point)
{
	double		Value;
	CSG_Grid	*pGrid	= pDecision->Get_Parameter("GRID")->asGrid();

	if( pGrid && pGrid->Get_Value(Point, Value) )
	{
		CSG_String	ID	= pDecision->Get_Identifier(); if( !ID.Cmp(SG_T("ROOT")) ) ID.Clear();

		ID	+= Value < pDecision->Get_Parameter("THRESHOLD")->asDouble() ? SG_T("A") : SG_T("B");

		if( pDecision->Get_Parameter(ID + SG_T("|NODE"))->asBool() )
		{
			return( Get_Class(pDecision->Get_Parameter(ID)->asParameters(), Point) );
		}
		else
		{
			return( Get_Class(ID) );
		}
	}

	return( -1 );
}