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/*=========================================================================
Program: Visualization Toolkit
Module: TestSQLiteTableReadWrite.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.
=========================================================================*/
// .NAME Test of vtkTableToSQLiteWriter and vtkSQLiteToTableReader
// .SECTION Description
//
#include "vtkSmartPointer.h"
#include "vtkSQLiteDatabase.h"
#include "vtkSQLQuery.h"
#include "vtkTable.h"
#include "vtkTableReader.h"
#include "vtkTableWriter.h"
#include "vtkTableToSQLiteWriter.h"
#include "vtkSQLiteToTableReader.h"
#include "vtksys/SystemTools.hxx"
#include <sys/stat.h>
void PrintFile(const char* name, std::ostream& os);
bool CompareAsciiFiles(const char* file1, const char* file2);
int TestSQLiteTableReadWrite(int argc, char *argv[])
{
if ( argc <= 1 )
{
std::cerr << "Usage: " << argv[0] << " <.vtk table file>" << std::endl;
return 1;
}
std::cerr << "reading a vtkTable from file" << std::endl;
vtkSmartPointer<vtkTableReader> tableFileReader =
vtkSmartPointer<vtkTableReader>::New();
tableFileReader->SetFileName(argv[1]);
vtkTable *table = tableFileReader->GetOutput();
tableFileReader->Update();
std::cerr << "opening an SQLite database connection" << std::endl;
vtkSQLiteDatabase* db = vtkSQLiteDatabase::SafeDownCast(
vtkSQLDatabase::CreateFromURL( "sqlite://local.db" ) );
bool status = db->Open("", vtkSQLiteDatabase::CREATE_OR_CLEAR);
if ( ! status )
{
std::cerr << "Couldn't open database using CREATE_OR_CLEAR.\n";
return 1;
}
std::cerr << "creating an SQLite table from a vtkTable" << std::endl;
vtkSmartPointer<vtkTableToSQLiteWriter> writerToTest =
vtkSmartPointer<vtkTableToSQLiteWriter>::New();
writerToTest->SetInputData(table);
writerToTest->SetDatabase(db);
writerToTest->SetTableName("tableTest");
writerToTest->Update();
std::cerr << "converting it back to a vtkTable" << std::endl;
vtkSmartPointer<vtkSQLiteToTableReader> readerToTest =
vtkSmartPointer<vtkSQLiteToTableReader>::New();
readerToTest->SetDatabase(db);
readerToTest->SetTableName("tableTest");
readerToTest->Update();
std::cerr << "writing the table out to disk" << std::endl;
vtkSmartPointer<vtkTableWriter> tableFileWriter =
vtkSmartPointer<vtkTableWriter>::New();
tableFileWriter->SetFileName("TestSQLiteTableReadWrite.vtk");
tableFileWriter->SetInputConnection(readerToTest->GetOutputPort());
tableFileWriter->Update();
std::cerr << "verifying that it's the same as what we started with...";
int result = 0;
if(!CompareAsciiFiles(argv[1], "TestSQLiteTableReadWrite.vtk"))
{
std::cerr << argv[1] << " differs from TestSQLiteTableReadWrite.vtk" << std::endl;
PrintFile(argv[1], std::cerr);
PrintFile("TestSQLiteTableReadWrite.vtk", std::cerr);
result = 1;
}
else
{
std::cerr << "it is!" << std::endl;
}
//drop the table we created
vtkSQLQuery* query = db->GetQueryInstance();
query->SetQuery("DROP TABLE tableTest");
query->Execute();
//clean up memory
db->Delete();
query->Delete();
return result;
}
void PrintFile(const char* name, std::ostream& os)
{
const char* div = "=======================================================================";
// Preserve valuable output regardless of the limits set in
// CMake/CTestCustom.cmake
os << "CTEST_FULL_OUTPUT\n";
os << "File \"" << name << "\"";
struct stat fs;
if(stat(name, &fs) != 0)
{
os << " does not exist.\n";
return;
}
else
{
os << " has " << fs.st_size << " bytes";
}
std::ifstream fin(name);
if(fin)
{
os << ":\n" << div << "\n";
os << fin.rdbuf();
os << div << "\n";
os.flush();
}
else
{
os << " but cannot be opened for read.\n";
}
}
bool CompareAsciiFiles(const char* file1, const char* file2)
{
// Open the two files for read
std::ifstream fin1(file1);
if(!fin1)
{
std::cerr << file2 << " cannot be opened for read.\n";
return false;
}
std::ifstream fin2(file2);
if(!fin2)
{
std::cerr << file2 << " cannot be opened for read.\n";
return false;
}
unsigned int lineNo = 0;
bool status = true;
std::string line1, line2;
while (!fin1.eof() && !fin2.eof())
{
std::getline(fin1, line1);
std::getline(fin2, line2);
if (fin1.eof() && !fin2.eof())
{
status = false;
break;
}
else if (!fin1.eof() && fin2.eof())
{
status = false;
break;
}
lineNo++;
// The first line contains version information -- skip it so we don't
// have to update the input file for irrelevent version changes.
if (lineNo > 1 && line1 != line2)
{
std::cerr << "ERROR: line " << lineNo << " in file " << file1
<< ":\n" << line1
<< " does not match line in " << file2
<< ":\n" << line2
<< std::endl;
status = false;
break;
}
}
fin1.close();
fin2.close();
return status;
}
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