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/*=========================================================================
Program: DICOMParser
Module: DICOMSource.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2003 Matt Turek
All rights reserved.
See Copyright.txt 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.
=========================================================================*/
#ifdef _MSC_VER
#pragma warning ( disable : 4514 )
#pragma warning ( disable : 4710 )
#pragma warning ( push, 3 )
#endif
#include <iostream>
#include <fstream>
#include <iomanip>
#include <stdio.h>
#include <string.h>
#include "DICOMConfig.h"
#include "DICOMSource.h"
namespace DICOMPARSER_NAMESPACE
{
DICOMSource::DICOMSource()
{
/* Are we little or big endian? From Harbison&Steele. */
union
{
long l;
char c[sizeof (long)];
} u;
u.l = 1;
PlatformIsBigEndian = (u.c[sizeof (long) - 1] == 1);
if (PlatformIsBigEndian)
{
PlatformEndian = "BigEndian";
}
else
{
PlatformEndian = "LittleEndian";
}
}
DICOMSource::~DICOMSource()
{
}
DICOMSource::DICOMSource(const DICOMSource& in)
{
if (strcmp(in.PlatformEndian, "LittleEndian") == 0)
{
PlatformEndian = "LittleEndian";
}
else
{
PlatformEndian = "BigEndian";
}
}
void DICOMSource::operator=(const DICOMSource& in)
{
if (strcmp(in.PlatformEndian, "LittleEndian") == 0)
{
PlatformEndian = "LittleEndian";
}
else
{
PlatformEndian = "BigEndian";
}
}
doublebyte DICOMSource::ReadDoubleByte()
{
doublebyte sh = 0;
int sz = sizeof(doublebyte);
this->Read((char*)&(sh),sz);
if (PlatformIsBigEndian)
{
sh = swapShort(sh);
}
return(sh);
}
doublebyte DICOMSource::ReadDoubleByteAsLittleEndian()
{
doublebyte sh = 0;
int sz = sizeof(doublebyte);
this->Read((char*)&(sh),sz);
if (PlatformIsBigEndian)
{
sh = swapShort(sh);
}
return(sh);
}
quadbyte DICOMSource::ReadQuadByte()
{
quadbyte sh;
int sz = sizeof(quadbyte);
this->Read((char*)&(sh),sz);
if (PlatformIsBigEndian)
{
sh = swapLong(sh);
}
return(sh);
}
quadbyte DICOMSource::ReadNBytes(int len)
{
quadbyte ret = -1;
switch (len)
{
case 1:
char ch;
this->Read(&ch,1); //from Image
ret =(quadbyte) ch;
break;
case 2:
ret =(quadbyte) ReadDoubleByte();
break;
case 4:
ret = ReadQuadByte();
break;
default:
dicom_stream::cerr << "Unable to read " << len << " bytes" << dicom_stream::endl;
break;
}
return (ret);
}
float DICOMSource::ReadAsciiFloat(int len)
{
float ret=0.0f;
char* val = new char[len+1];
this->Read(val,len);
val[len] = '\0';
#if 0
//
// istrstream destroys the data during formatted input.
//
int len2 = static_cast<int> (strlen((char*) val));
char* val2 = new char[len2];
strncpy(val2, (char*) val, len2);
dicom_stream::istrstream data(val2);
data >> ret;
delete [] val2;
#else
sscanf(val,"%e",&ret);
#endif
// dicom_stream::cout << "Read ASCII float: " << ret << dicom_stream::endl;
delete [] val;
return (ret);
}
int DICOMSource::ReadAsciiInt(int len)
{
int ret=0;
char* val = new char[len+1];
this->Read(val,len);
val[len] = '\0';
#if 0
//
// istrstream destroys the data during formatted input.
//
int len2 = static_cast<int> (strlen((char*) val));
char* val2 = new char[len2];
strncpy(val2, (char*) val, len2);
dicom_stream::istrstream data(val2);
data >> ret;
delete [] val2;
#else
sscanf(val,"%d",&ret);
#endif
// dicom_stream::cout << "Read ASCII int: " << ret << dicom_stream::endl;
delete [] val;
return (ret);
}
char* DICOMSource::ReadAsciiCharArray(int len)
{
if (len <= 0)
{
return NULL;
}
char* val = new char[len + 1];
this->Read(val, len);
val[len] = 0; // NULL terminate.
return val;
}
}
#ifdef _MSC_VER
#pragma warning ( pop )
#endif
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