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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html 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 "gdcmDataElement.h"
#include "gdcmExplicitDataElement.h"
#include "gdcmTag.h"
#include "gdcmSwapper.h"
#include <fstream>
inline void DebugElement(std::stringstream const &os)
{
std::ofstream of("/tmp/bla.bin", std::ios::binary);
std::string str = os.str();
of.write(str.c_str(), str.size());
of.close();
}
inline void WriteRead(gdcm::DataElement const &w, gdcm::DataElement &r)
{
// w will be written
// r will be read back
std::stringstream ss;
w.Write<gdcm::ExplicitDataElement,gdcm::SwapperNoOp>(ss);
r.Read<gdcm::ExplicitDataElement,gdcm::SwapperNoOp>(ss);
}
int TestDataElement1(const uint16_t group, const uint16_t element,
const uint16_t vl)
{
const char *str;
std::stringstream ss;
// SimpleData Element, just group,element and length
str = reinterpret_cast<const char*>(&group);
ss.write(str, sizeof(group));
str = reinterpret_cast<const char*>(&element);
ss.write(str, sizeof(element));
str = reinterpret_cast<const char*>(&vl);
ss.write(str, sizeof(vl));
// gdcm::DataElement de;
// de.Read( ss );
// if( de.GetTag().GetGroup() != group ||
// de.GetTag().GetElement() != element ||
// de.GetVL() != vl )
// {
// std::cerr << de << std::endl;
// return 1;
// }
//
// gdcm::DataElement de2;
// WriteRead(de, de2);
// if( !(de == de2) )
// {
// std::cerr << de << std::endl;
// std::cerr << de2 << std::endl;
// return 1;
// }
return 0;
}
// Explicit
int TestDataElement2(const uint16_t group, const uint16_t element,
const char* vr, const char* value)
{
const char *str;
const uint32_t vl = (uint32_t)strlen( value );
std::stringstream ss;
// SimpleData Element, just group,element and length
str = reinterpret_cast<const char*>(&group);
ss.write(str, sizeof(group));
str = reinterpret_cast<const char*>(&element);
ss.write(str, sizeof(element));
if( gdcm::VR::GetVRType(vr) == gdcm::VR::INVALID )
{
std::cerr << "Test buggy" << std::endl;
return 1;
}
ss.write(vr, strlen(vr) );
str = reinterpret_cast<const char*>(&vl);
ss.write(str, sizeof(vl));
assert( !(strlen(value) % 2) );
ss.write(value, strlen(value) );
//DebugElement(ss);
gdcm::ExplicitDataElement de;
de.Read<gdcm::SwapperNoOp>( ss );
if( de.GetTag().GetGroup() != group ||
de.GetTag().GetElement() != element ||
de.GetVL() != vl )
{
std::cerr << de << std::endl;
return 1;
}
gdcm::ExplicitDataElement de2;
WriteRead(de, de2);
if( !(de == de2) )
{
std::cerr << de << std::endl;
std::cerr << de2 << std::endl;
return 1;
}
return 0;
}
namespace
{
// Tests operator== and operator!= for various gdcm::DataElement objects.
// Also tests comparing to itself, symmetry of the comparison operators
// with respect to their operands, and consistency between
// operator== and operator!=.
// Note: This function recursively calls itself, in order to get a pointer
// to an equivalent array of gdcm::DataElement objects.
int TestDataElementEqualityComparison(
const gdcm::DataElement* const equivalentDataElements = nullptr)
{
const unsigned int numberOfDataElements = 6;
gdcm::DataElement dataElements[numberOfDataElements] =
{
gdcm::DataElement(gdcm::Tag(0, 0), 0, gdcm::VR::INVALID),
gdcm::DataElement(gdcm::Tag(1, 1), 0, gdcm::VR::INVALID),
gdcm::DataElement(gdcm::Tag(1, 1), 1, gdcm::VR::INVALID),
gdcm::DataElement(gdcm::Tag(1, 1), 1, gdcm::VR::AE)
};
dataElements[4].SetByteValue("\0", 2);
dataElements[5].SetByteValue("123", 4);
// Now all data elements of the array dataElements are different.
if ( equivalentDataElements == nullptr )
{
return TestDataElementEqualityComparison(dataElements);
}
// equivalentDataElements != NULL, and because this function
// is called recursively, equivalentDataElements[i] is equivalent
// to dataElements[i].
for (unsigned int i = 0; i < numberOfDataElements; ++i)
{
const gdcm::DataElement& dataElement = dataElements[i];
if ( ! (dataElement == dataElement) )
{
std::cerr <<
"Error: A data element should compare equal to itself!\n";
return 1;
}
if ( dataElement != dataElement )
{
std::cerr <<
"Error: A data element should not compare unequal to itself!\n";
return 1;
}
const gdcm::DataElement& equivalentDataElement = equivalentDataElements[i];
if ( ! (dataElement == equivalentDataElement) ||
! (equivalentDataElement == dataElement ) )
{
std::cerr <<
"Error: A data element should compare equal to an equivalent one!\n";
return 1;
}
if ( (dataElement != equivalentDataElement) ||
(equivalentDataElement != dataElement) )
{
std::cerr <<
"Error: A data element should not compare unequal to an equivalent one!\n";
return 1;
}
for (unsigned int j = i + 1; j < numberOfDataElements; ++j)
{
// dataElements[j] is different from dataElements[i].
const gdcm::DataElement& differentDataElement = dataElements[j];
if ( (dataElement == differentDataElement) ||
(differentDataElement == dataElement) )
{
std::cerr <<
"Error: A data element should not compare equal to a different one!\n";
return 1;
}
if ( !(dataElement != differentDataElement) ||
!(differentDataElement != dataElement) )
{
std::cerr <<
"Error: A data element should compare unequal to a different one!\n";
return 1;
}
}
}
return 0;
}
} // End of unnamed namespace.
// Test Data Element
int TestDataElement(int , char *[])
{
const uint16_t group = 0x0010;
const uint16_t element = 0x0012;
const uint16_t vl = 0x0;
int r = 0;
r += TestDataElement1(group, element, vl);
r += TestDataElementEqualityComparison();
// Full DataElement
//const char vr[] = "UN";
//const char value[] = "ABCDEFGHIJKLMNOP";
//r += TestDataElement2(group, element, vr, value);
return r;
}
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