This file is indexed.

/usr/include/gdcm-2.6/gdcmVR.h is in libgdcm2-dev 2.6.6-3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
/*=========================================================================

  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.

=========================================================================*/
#ifndef GDCMVR_H
#define GDCMVR_H

#include "gdcmTag.h"
#include "gdcmTrace.h"
#include "gdcmString.h"

#include <iostream>
#include <fstream>
#include <assert.h>

//these defines are here to ensure compilation on sunos gcc
#if defined (CS)
# undef CS
#endif
#if defined (DS)
# undef DS
#endif
#if defined (SS)
# undef SS
#endif


namespace gdcm
{

/**
 * \brief VR class
 * \details This is adapted from DICOM standard
 * The biggest difference is the INVALID VR
 * and the composite one that differ from standard (more like an addition)
 * This allow us to represent all the possible case express in the DICOMV3 dict
 * \note
 * VALUE REPRESENTATION (VR)
 * Specifies the data type and format of the Value(s) contained in the
 * Value Field of a Data Element.
 * VALUE REPRESENTATION FIELD:
 * The field where the Value Representation of a Data Element is
 * stored in the encoding of a Data Element structure with explicit VR.
 */
class GDCM_EXPORT VR
{
public:
  typedef enum {
    // Warning: Do not write if ( vr & VR::INVALID ) but if ( vr == VR::INVALID )
    INVALID = 0, // For Item/(Seq) Item Delimitation Item
    AE = 1,
    AS = 2,
    AT = 4,
    CS = 8,
    DA = 16,
    DS = 32,
    DT = 64,
    FD = 128,
    FL = 256,
    IS = 512,
    LO = 1024,
    LT = 2048,
    OB = 4096,
    OD = 134217728, // 2^27
    OF = 8192,
    OW = 16384,
    PN = 32768,
    SH = 65536,
    SL = 131072,
    SQ = 262144,
    SS = 524288,
    ST = 1048576,
    TM = 2097152,
    UI = 4194304,
    UL = 8388608,
    UN = 16777216,
    US = 33554432,
    UT = 67108864,
    OB_OW = OB | OW,
    US_SS = US | SS,
    US_SS_OW = US | SS | OW,
    // The following do not have a VRString equivalent (ie cannot be found in PS 3.6)
    VL16 = AE | AS | AT | CS | DA | DS | DT | FD | FL | IS | LO | LT | PN | SH | SL | SS | ST | TM | UI | UL | US, // if( VR & VL16 ) => VR has its VL coded over 16bits
    VL32 = OB | OW | OD | OF | SQ | UN | UT, // if( VR & VL32 ) => VR has its VL coded over 32bits
    VRASCII = AE | AS | CS | DA | DS | DT | IS | LO | LT | PN | SH | ST | TM | UI | UT,
    VRBINARY = AT | FL | FD | OB | OD | OF | OW | SL | SQ | SS | UL | UN | US, // FIXME: UN ?
    // PS 3.5:
    // Data Elements with a VR of SQ, OD, OF, OW, OB or UN shall always have a Value Multiplicity of one.
    // GDCM is adding a couple more: AS, LT, ST, UT
    VR_VM1 = AS | LT | ST | UT | SQ | OF | OD | OW | OB | UN, // All those VR have a VM1
    VRALL = VRASCII | VRBINARY,
    VR_END = UT+1  // Invalid VR, need to be max(VRType)+1
  } VRType;

  static const char *GetVRString(VRType vr);

  // This function will only look at the very first two chars nothing else
  static VRType GetVRTypeFromFile(const char *vr);

  // You need to make sure end of string is \0
  static VRType GetVRType(const char *vr);
  static const char *GetVRStringFromFile(VRType vr);

  static bool IsValid(const char *vr);
  // Check if vr1 is valid against vr2,
  // Typically vr1 is read from the file and vr2 is taken from the dict
  static bool IsValid(const char *vr1, VRType vr2);
  //static bool IsValid(const VRType &vr1, const VRType &vr2);
  // Find out if the string read is byte swapped
  static bool IsSwap(const char *vr);

  // Size read on disk
  // FIXME: int ?
  int GetLength() const {
    return VR::GetLength(VRField);
  }
  unsigned int GetSizeof() const;
  static uint32_t GetLength(VRType vr) {
    //if( vr == VR::INVALID ) return 4;
    if( vr & VL32 )
      {
      return 4;
      }
    else
      return 2;
  }

  // Some use of template metaprograming with ugly macro
  static bool IsBinary(VRType vr);
  static bool IsASCII(VRType vr);
  // TODO: REMOVE ME
  static bool CanDisplay(VRType vr);
  // TODO: REMOVE ME
  static bool IsBinary2(VRType vr);
  // TODO: REMOVE ME
  static bool IsASCII2(VRType vr);

  VR(VRType vr = INVALID):VRField(vr) { }
  //VR(VR const &vr):VRField(vr.VRField) { }
  std::istream &Read(std::istream &is)
    {
    char vr[2];
    is.read(vr, 2);
    VRField = GetVRTypeFromFile(vr);
    assert( VRField != VR::VR_END );
    if( VRField == VR::INVALID )
    {
      // \0\2 Data/TheralysGDCM120Bug.dcm
      // \0\0 Data/MR_Philips_Intera_PrivateSequenceExplicitVR_in_SQ_2001_e05f_item_wrong_lgt_use_NOSHADOWSEQ.dcm
      // \0\4 Data/BugGDCM2_UndefItemWrongVL.dcm
      // \44\0 Data/gdcm-MR-PHILIPS-16-Multi-Seq.dcm
      // \0\20 Data/ExplicitVRforPublicElementsImplicitVRforShadowElements.dcm
      // \0\3 Data/DMCPACS_ExplicitImplicit_BogusIOP.dcm
      // \0\4 Data/THERALYS-12-MONO2-Uncompressed-Even_Length_Tag.dcm
      // \0\4 Data/PrivateGEImplicitVRBigEndianTransferSyntax16Bits.dcm
      // \0\4 Data/GE_DLX-8-MONO2-PrivateSyntax.dcm
      throw Exception( "INVALID VR" );
    }
    if( VRField & VL32 )
      {
#if 0
      // For some reason this seems slower on my linux box...
      is.seekg(2, std::ios::cur );
#else
      char dum[2];
      is.read(dum, 2);
      if( !(dum[0] == 0 && dum[1] == 0 ))
        {
        // JDDICOM_Sample4.dcm
        gdcmDebugMacro( "32bits VR contains non zero bytes. Skipped" );
        }
#endif
      }
    return is;
    }

  const std::ostream &Write(std::ostream &os) const
    {
    VRType vrfield = VRField;
    gdcmAssertAlwaysMacro( !IsDual() );
    if( vrfield == VR::INVALID )
      {
      //vrfield = VR::UN;
      }
    const char *vr = GetVRString(vrfield);
    //assert( strlen( vr ) == 2 );
    assert( vr[0] && vr[1] && vr[2] == 0 );
    os.write(vr, 2);
    // See PS 3.5, Data Element Structure With Explicit VR
    if( vrfield & VL32 )
      {
      const char dum[2] = {0, 0};
      os.write(dum,2);
      }
    return os;
    }
  friend std::ostream &operator<<(std::ostream &os, const VR &vr);

  operator VRType () const { return VRField; }

  unsigned int GetSize() const;

  bool Compatible(VR const &vr) const;

  bool IsVRFile() const;

  bool IsDual() const;

private:
  // Internal function that map a VRType to an index in the VRStrings table
  static int GetIndex(VRType vr);
  VRType VRField;
};
//-----------------------------------------------------------------------------
inline std::ostream &operator<<(std::ostream &_os, const VR &val)
{
  //_os << VR::GetVRStringFromFile(val.VRField);
  _os << VR::GetVRString(val.VRField);
  return _os;
}

// Apparently SWIG is not happy with something, somewhere below...
#ifndef SWIG

// Tells whether VR Type is ASCII or Binary
template<int T> struct VRToEncoding;
// Convert from VR Type to real underlying type
template<int T> struct VRToType;
#define TYPETOENCODING(type,rep, rtype)         \
  template<> struct VRToEncoding<VR::type>    \
  { enum { Mode = VR::rep }; };                 \
  template<> struct VRToType<VR::type>        \
  { typedef rtype Type; };


// Do not use me
struct UI { char Internal[64+1];
  friend std::ostream& operator<<(std::ostream &_os, const UI &_val);
};
inline std::ostream& operator<<(std::ostream &_os, const UI &_val)
{
  _os << _val.Internal;
  return _os;
}

typedef String<'\\',16> AEComp;
typedef String<'\\',64> ASComp;
typedef String<'\\',16> CSComp;
typedef String<'\\',64> DAComp;
typedef String<'\\',64> DTComp;
typedef String<'\\',64> LOComp;
typedef String<'\\',64> LTComp;
typedef String<'\\',64> PNComp;
typedef String<'\\',64> SHComp;
typedef String<'\\',64> STComp;
typedef String<'\\',16> TMComp;
typedef String<'\\',64,0> UIComp;
typedef String<'\\',64> UTComp;


// TODO: Could be generated from XML file
TYPETOENCODING(AE,VRASCII ,AEComp)
TYPETOENCODING(AS,VRASCII ,ASComp)
TYPETOENCODING(AT,VRBINARY,Tag)
TYPETOENCODING(CS,VRASCII ,CSComp)
TYPETOENCODING(DA,VRASCII ,DAComp)
TYPETOENCODING(DS,VRASCII ,double)
TYPETOENCODING(DT,VRASCII ,DTComp)
TYPETOENCODING(FL,VRBINARY,float)
TYPETOENCODING(FD,VRBINARY,double)
TYPETOENCODING(IS,VRASCII ,int32_t)
TYPETOENCODING(LO,VRASCII ,LOComp)
TYPETOENCODING(LT,VRASCII ,LTComp)
TYPETOENCODING(OB,VRBINARY,uint8_t)
TYPETOENCODING(OF,VRBINARY,float)
TYPETOENCODING(OW,VRBINARY,uint16_t)
TYPETOENCODING(PN,VRASCII ,PNComp)
TYPETOENCODING(SH,VRASCII ,SHComp)
TYPETOENCODING(SL,VRBINARY,int32_t)
TYPETOENCODING(SQ,VRBINARY,unsigned char) // FIXME
TYPETOENCODING(SS,VRBINARY,int16_t)
TYPETOENCODING(ST,VRASCII ,STComp)
TYPETOENCODING(TM,VRASCII ,TMComp)
TYPETOENCODING(UI,VRASCII ,UIComp)
TYPETOENCODING(UL,VRBINARY,uint32_t)
TYPETOENCODING(UN,VRBINARY,uint8_t) // FIXME ?
TYPETOENCODING(US,VRBINARY,uint16_t)
TYPETOENCODING(UT,VRASCII ,UTComp)

#define VRTypeTemplateCase(type) \
  case VR::type: \
    return sizeof ( VRToType<VR::type>::Type );

inline unsigned int VR::GetSize() const
{
  switch(VRField)
  {
    VRTypeTemplateCase(AE)
    VRTypeTemplateCase(AS)
    VRTypeTemplateCase(AT)
    VRTypeTemplateCase(CS)
    VRTypeTemplateCase(DA)
    VRTypeTemplateCase(DS)
    VRTypeTemplateCase(DT)
    VRTypeTemplateCase(FL)
    VRTypeTemplateCase(FD)
    VRTypeTemplateCase(IS)
    VRTypeTemplateCase(LO)
    VRTypeTemplateCase(LT)
    VRTypeTemplateCase(OB)
    VRTypeTemplateCase(OF)
    VRTypeTemplateCase(OW)
    VRTypeTemplateCase(PN)
    VRTypeTemplateCase(SH)
    VRTypeTemplateCase(SL)
    VRTypeTemplateCase(SQ)
    VRTypeTemplateCase(SS)
    VRTypeTemplateCase(ST)
    VRTypeTemplateCase(TM)
    VRTypeTemplateCase(UI)
    VRTypeTemplateCase(UL)
    VRTypeTemplateCase(UN)
    VRTypeTemplateCase(US)
    VRTypeTemplateCase(UT)
    case VR::US_SS:
      return 2;
    default:
       assert( 0 && "should not" );
  }
  return 0;
}
#endif // SWIG


} // end namespace gdcm

#endif //GDCMVR_H