1 /*=========================================================================
4 Module: $RCSfile: gdcmDocEntry.cxx,v $
6 Date: $Date: 2005/01/18 08:01:41 $
7 Version: $Revision: 1.42 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
19 #include "gdcmDocEntry.h"
22 #include "gdcmGlobal.h"
24 #include "gdcmDebug.h"
26 #include <iomanip> // for std::ios::left, ...
33 #define MAX_SIZE_PRINT_ELEMENT_VALUE 64
35 //-----------------------------------------------------------------------------
36 // Constructor / Destructor
38 * \brief Constructor from a given DictEntry
39 * @param in Pointer to existing dictionary entry
41 DocEntry::DocEntry(DictEntry *in)
45 SetKey( in->GetKey( ) );
46 Offset = 0 ; // To avoid further missprinting
48 // init some variables
53 //-----------------------------------------------------------------------------
56 * \brief Prints the common part of ValEntry, BinEntry, SeqEntry
57 * @param os ostream we want to print in
59 void DocEntry::Print(std::ostream &os, std::string const & )
73 s << DictEntry::TranslateToKey(GetGroup(),GetElement());
78 lgth = GetReadLength(); // ReadLength, as opposed to Length
79 if (lgth == 0xffffffff)
81 st = Util::Format("x(ffff)"); // I said : "x(ffff)" !
82 s.setf(std::ios::left);
83 s << std::setw(10-st.size()) << " ";
85 s.setf(std::ios::left);
86 s << std::setw(8) << "-1";
90 st = Util::Format("x(%x)",lgth);
91 s.setf(std::ios::left);
92 s << std::setw(10-st.size()) << " ";
94 s.setf(std::ios::left);
95 s << std::setw(8) << lgth;
98 st = Util::Format("x(%x)",o);
99 s << std::setw(10-st.size()) << " ";
101 s << std::setw(8) << o;
104 s << "[" << vr << "] ";
108 s.setf(std::ios::left);
109 s << std::setw(66-GetName().length()) << " ";
112 s << "[" << GetName()<< "]";
117 * \brief Writes the common part of any ValEntry, BinEntry, SeqEntry
118 * @param fp already open file pointer
119 * @param filetype type of the file to be written
121 void DocEntry::WriteContent(std::ofstream *fp, FileType filetype)
123 uint32_t ffff = 0xffffffff;
124 uint16_t group = GetGroup();
126 uint16_t el = GetElement();
127 uint32_t lgr = GetLength();
129 if ( group == 0xfffe && el == 0x0000 )
131 // Fix in order to make some MR PHILIPS images e-film readable
132 // see gdcmData/gdcm-MR-PHILIPS-16-Multi-Seq.dcm:
133 // we just *always* ignore spurious fffe|0000 tag !
138 // ----------- Writes the common part
140 binary_write( *fp, group); //group
141 binary_write( *fp, el); //element
143 if ( filetype == ExplicitVR )
145 // Special case of delimiters:
148 // Delimiters have NO Value Representation
149 // Hence we skip writing the VR.
150 // In order to avoid further troubles, we choose to write them
151 // as 'no-length' Item Delimitors (we pad by writing 0xffffffff)
152 // The end of a given Item will be found when :
153 // - a new Item Delimitor Item is encountered (the Seq goes on)
154 // - a Sequence Delimitor Item is encountered (the Seq just ended)
156 // TODO : verify if the Sequence Delimitor Item was forced during Parsing
158 uint32_t ff = 0xffffffff;
159 binary_write(*fp, ff);
164 uint16_t shortLgr = lgr;
166 if (vr == GDCM_UNKNOWN)
168 // Unknown was 'written'
169 // deal with Little Endian
170 binary_write(*fp, shortLgr);
171 binary_write(*fp, z);
175 binary_write(*fp, vr);
176 gdcmAssertMacro( vr.size() == 2 );
178 if ( (vr == "OB") || (vr == "OW") || (vr == "SQ") || (vr == "UN") )
180 binary_write(*fp, z);
183 // we set SQ length to ffffffff
184 // and we shall write a Sequence Delimitor Item
185 // at the end of the Sequence!
186 binary_write(*fp, ffff);
190 binary_write(*fp, lgr);
195 binary_write(*fp, shortLgr);
203 binary_write(*fp, ffff);
207 binary_write(*fp, lgr);
212 //-----------------------------------------------------------------------------
216 * \brief Gets the full length of the elementary DocEntry (not only value
217 * length) depending on the VR.
219 uint32_t DocEntry::GetFullLength()
221 uint32_t l = GetReadLength();
222 if ( IsImplicitVR() )
224 l = l + 8; // 2 (gr) + 2 (el) + 4 (lgth)
228 if ( GetVR()=="OB" || GetVR()=="OW" || GetVR()=="SQ" )
230 l = l + 12; // 2 (gr) + 2 (el) + 2 (vr) + 2 (unused) + 4 (lgth)
234 l = l + 8; // 2 (gr) + 2 (el) + 2 (vr) + 2 (lgth)
241 * \brief Copies all the attributes from an other DocEntry
242 * @param e entry to copy from
244 void DocEntry::Copy (DocEntry *e)
247 ReadLength = e->ReadLength;
248 ImplicitVR = e->ImplicitVR;
253 * \brief tells us if entry is the last one of a 'no length' SequenceItem
256 bool DocEntry::IsItemDelimitor()
258 return (GetGroup() == 0xfffe && GetElement() == 0xe00d);
261 * \brief tells us if entry is the last one of a 'no length' Sequence
264 bool DocEntry::IsSequenceDelimitor()
266 return (GetGroup() == 0xfffe && GetElement() == 0xe0dd);
269 //-----------------------------------------------------------------------------
273 //-----------------------------------------------------------------------------
276 //-----------------------------------------------------------------------------
278 } // end namespace gdcm