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ThirdParty-6/ParaView-5.0.1/VTK/IO/MySQL/vtkIOMySQL_AutoInit.cxx

56 lines
1.4 KiB
C++

/*=========================================================================
Program: Visualization Toolkit
Module: vtkIOMySQL_AutoInit.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkMySQLDatabase.h"
#include <vtksys/SystemTools.hxx>
#include <string>
// Registration of MySQL dynamically with the vtkSQLDatabase factory method.
vtkSQLDatabase * MySQLCreateFunction(const char* URL)
{
std::string urlstr(URL ? URL : "");
std::string protocol, unused;
vtkMySQLDatabase *db = 0;
if (vtksys::SystemTools::ParseURLProtocol(urlstr, protocol, unused) &&
protocol == "mysql")
{
db = vtkMySQLDatabase::New();
db->ParseURL(URL);
}
return db;
}
static unsigned int vtkIOMySQLCount;
VTKIOMYSQL_EXPORT void vtkIOMySQL_AutoInit_Construct()
{
if (++vtkIOMySQLCount == 1)
{
vtkSQLDatabase::RegisterCreateFromURLCallback(MySQLCreateFunction);
}
}
VTKIOMYSQL_EXPORT void vtkIOMySQL_AutoInit_Destruct()
{
if (--vtkIOMySQLCount == 0)
{
vtkSQLDatabase::UnRegisterCreateFromURLCallback(MySQLCreateFunction);
}
}