7 #include <netinet/in.h>
9 #include <cctype> // for isalpha
14 #define HEADER_LENGHT_TO_READ 256 // on ne lit plus que le debut
17 struct FileReadError {
18 FileReadError(FILE* fp, const char* Mesg) {
20 dbg.Verbose(1, "EOF encountered :", Mesg);
22 dbg.Verbose(1, "Error on reading :", Mesg);
27 //FIXME: this looks dirty to me...
28 #define str2num(str, typeNum) *((typeNum *)(str))
30 VRHT * gdcmHeader::dicom_vr = (VRHT*)0;
31 gdcmDictSet* gdcmHeader::Dicts = new gdcmDictSet();
33 void gdcmHeader::Initialise(void) {
34 if (!gdcmHeader::dicom_vr)
36 RefPubDict = gdcmHeader::Dicts->GetDefaultPublicDict();
37 RefShaDict = (gdcmDict*)0;
40 gdcmHeader::gdcmHeader (const char* InFilename) {
41 SetMaxSizeLoadElementValue(1024);
42 filename = InFilename;
44 fp=fopen(InFilename,"rw");
45 dbg.Error(!fp, "gdcmHeader::gdcmHeader cannot open file", InFilename);
49 gdcmHeader::~gdcmHeader (void) {
54 void gdcmHeader::InitVRDict (void) {
56 dbg.Verbose(0, "gdcmHeader::InitVRDict:", "VR dictionary allready set");
60 (*vr)["AE"] = "Application Entity"; // At most 16 bytes
61 (*vr)["AS"] = "Age String"; // Exactly 4 bytes
62 (*vr)["AT"] = "Attribute Tag"; // 2 16-bit unsigned short integers
63 (*vr)["CS"] = "Code String"; // At most 16 bytes
64 (*vr)["DA"] = "Date"; // Exactly 8 bytes
65 (*vr)["DS"] = "Decimal String"; // At most 16 bytes
66 (*vr)["DT"] = "Date Time"; // At most 26 bytes
67 (*vr)["FL"] = "Floating Point Single"; // 32-bit IEEE 754:1985 float
68 (*vr)["FD"] = "Floating Point Double"; // 64-bit IEEE 754:1985 double
69 (*vr)["IS"] = "Integer String"; // At most 12 bytes
70 (*vr)["LO"] = "Long String"; // At most 64 chars
71 (*vr)["LT"] = "Long Text"; // At most 10240 chars
72 (*vr)["OB"] = "Other Byte String"; // String of bytes (vr independant)
73 (*vr)["OW"] = "Other Word String"; // String of 16-bit words (vr dep)
74 (*vr)["PN"] = "Person Name"; // At most 64 chars
75 (*vr)["SH"] = "Short String"; // At most 16 chars
76 (*vr)["SL"] = "Signed Long"; // Exactly 4 bytes
77 (*vr)["SQ"] = "Sequence of Items"; // Not Applicable
78 (*vr)["SS"] = "Signed Short"; // Exactly 2 bytes
79 (*vr)["ST"] = "Short Text"; // At most 1024 chars
80 (*vr)["TM"] = "Time"; // At most 16 bytes
81 (*vr)["UI"] = "Unique Identifier"; // At most 64 bytes
82 (*vr)["UL"] = "Unsigned Long "; // Exactly 4 bytes
83 (*vr)["UN"] = "Unknown"; // Any length of bytes
84 (*vr)["US"] = "Unsigned Short "; // Exactly 2 bytes
85 (*vr)["UT"] = "Unlimited Text"; // At most 2^32 -1 chars
91 * \brief La seule maniere sure que l'on aie pour determiner
92 * si on est en LITTLE_ENDIAN, BIG-ENDIAN,
93 * BAD-LITTLE-ENDIAN, BAD-BIG-ENDIAN
94 * est de trouver l'element qui donne la longueur d'un 'GROUP'
95 * (on sait que la longueur de cet element vaut 0x00000004)
96 * et de regarder comment cette longueur est codee en memoire
98 * Le probleme vient de ce que parfois, il n'y en a pas ...
100 * On fait alors le pari qu'on a a faire a du LITTLE_ENDIAN propre.
101 * (Ce qui est la norme -pas respectee- depuis ACR-NEMA)
102 * Si ce n'est pas le cas, on ne peut rien faire.
104 * (il faudrait avoir des fonctions auxquelles
105 * on passe le code Swap en parametre, pour faire des essais 'manuels')
107 void gdcmHeader::CheckSwap()
110 guint32 x=4; // x : pour ntohs
111 bool net2host; // true when HostByteOrder is the same as NetworkByteOrder
115 char deb[HEADER_LENGHT_TO_READ];
117 // First, compare HostByteOrder and NetworkByteOrder in order to
118 // determine if we shall need to swap bytes (i.e. the Endian type).
124 // The easiest case is the one of a DICOM header, since it possesses a
125 // file preamble where it suffice to look for the sting "DICM".
126 lgrLue = fread(deb, 1, HEADER_LENGHT_TO_READ, fp);
129 if(memcmp(entCur, "DICM", (size_t)4) == 0) {
130 filetype = TrueDicom;
131 dbg.Verbose(1, "gdcmHeader::CheckSwap:", "looks like DICOM Version3");
134 dbg.Verbose(1, "gdcmHeader::CheckSwap:", "not a DICOM Version3 file");
137 if(filetype == TrueDicom) {
138 // Next, determine the value representation (VR). Let's skip to the
139 // first element (0002, 0000) and check there if we find "UL", in
140 // which case we (almost) know it is explicit VR.
141 // WARNING: if it happens to be implicit VR then what we will read
142 // is the length of the group. If this ascii representation of this
143 // length happens to be "UL" then we shall believe it is explicit VR.
144 // FIXME: in order to fix the above warning, we could read the next
145 // element value (or a couple of elements values) in order to make
146 // sure we are not commiting a big mistake.
148 // * the 128 bytes of File Preamble (often padded with zeroes),
149 // * the 4 bytes of "DICM" string,
150 // * the 4 bytes of the first tag (0002, 0000),
151 // i.e. a total of 136 bytes.
153 if(memcmp(entCur, "UL", (size_t)2) == 0) {
154 filetype = ExplicitVR;
155 dbg.Verbose(1, "gdcmHeader::CheckSwap:",
156 "explicit Value Representation");
158 filetype = ImplicitVR;
159 dbg.Verbose(1, "gdcmHeader::CheckSwap:",
160 "not an explicit Value Representation");
165 dbg.Verbose(1, "gdcmHeader::CheckSwap:",
166 "HostByteOrder != NetworkByteOrder");
169 dbg.Verbose(1, "gdcmHeader::CheckSwap:",
170 "HostByteOrder = NetworkByteOrder");
173 // Position the file position indicator at first tag (i.e.
174 // after the file preamble and the "DICM" string).
176 fseek (fp, 132L, SEEK_SET);
178 } // End of TrueDicom
180 // Alas, this is not a DicomV3 file and whatever happens there is no file
181 // preamble. We can reset the file position indicator to where the data
182 // is (i.e. the beginning of the file).
185 // Our next best chance would be to be considering a 'clean' ACR/NEMA file.
186 // By clean we mean that the length of the first tag is written down.
187 // If this is the case and since the length of the first group HAS to be
188 // four (bytes), then determining the proper swap code is straightforward.
191 s = str2num(entCur, guint32);
211 dbg.Verbose(0, "gdcmHeader::CheckSwap:",
212 "ACE/NEMA unfound swap info (time to raise bets)");
215 // We are out of luck. It is not a DicomV3 nor a 'clean' ACR/NEMA file.
216 // It is time for despaired wild guesses. So, let's assume this file
217 // happens to be 'dirty' ACR/NEMA, i.e. the length of the group is
218 // not present. Then the only info we have is the net2host one.
219 //FIXME Si c'est du RAW, ca degagera + tard
228 void gdcmHeader::SwitchSwapToBigEndian(void) {
229 dbg.Verbose(1, "gdcmHeader::FindLength", "Switching to BigEndian mode.");
247 * \ingroup gdcmHeader
248 * \brief recupere la longueur d'un champ DICOM.
250 * 1/ le fichier doit deja avoir ete ouvert,
251 * 2/ CheckSwap() doit avoir ete appele
252 * 3/ la partie 'group' ainsi que la partie 'elem'
253 * de l'acr_element doivent avoir ete lues.
255 * ACR-NEMA : we allways get
256 * GroupNumber (2 Octets)
257 * ElementNumber (2 Octets)
258 * ElementSize (4 Octets)
259 * DICOM en implicit Value Representation :
260 * GroupNumber (2 Octets)
261 * ElementNumber (2 Octets)
262 * ElementSize (4 Octets)
264 * DICOM en explicit Value Representation :
265 * GroupNumber (2 Octets)
266 * ElementNumber (2 Octets)
267 * ValueRepresentation (2 Octets)
268 * ElementSize (2 Octets)
270 * ATTENTION : dans le cas ou ValueRepresentation = OB, OW, SQ, UN
271 * GroupNumber (2 Octets)
272 * ElementNumber (2 Octets)
273 * ValueRepresentation (2 Octets)
274 * zone reservee (2 Octets)
275 * ElementSize (4 Octets)
277 * @param sw code swap
278 * @param skippedLength pointeur sur nombre d'octets que l'on a saute qd
279 * la lecture est finie
280 * @param longueurLue pointeur sur longueur (en nombre d'octets)
282 * @return longueur retenue pour le champ
285 void gdcmHeader::FindVR( ElValue *ElVal) {
289 long PositionOnEntry = ftell(fp);
290 // Warning: we believe this is explicit VR (Value Representation) because
291 // we used a heuristic that found "UL" in the first tag. Alas this
292 // doesn't guarantee that all the tags will be in explicit VR. In some
293 // cases (see e-film filtered files) one finds implicit VR tags mixed
294 // within an explicit VR file. Hence we make sure the present tag
295 // is in explicit VR and try to fix things if it happens not to be
297 bool RealExplicit = true;
299 if (filetype != ExplicitVR)
302 lgrLue=fread (&VR, (size_t)2,(size_t)1, fp);
306 // Assume we are reading a falsely explicit VR file i.e. we reached
307 // a tag where we expect reading a VR but are in fact we read the
308 // first to bytes of the length. Then we will interogate (through find)
309 // the dicom_vr dictionary with oddities like "\004\0" which crashes
310 // both GCC and VC++ implentations of the STL map. Hence when the
311 // expected VR read happens to be non-ascii characters we consider
312 // we hit falsely explicit VR tag.
314 if ( (!isalpha(VR[0])) && (!isalpha(VR[1])) )
315 RealExplicit = false;
317 // CLEANME searching the dicom_vr at each occurence is expensive.
318 // PostPone this test in an optional integrity check at the end
319 // of parsing or only in debug mode.
320 if ( RealExplicit && !dicom_vr->count(vr) )
321 RealExplicit = false;
323 if ( RealExplicit ) {
324 if ( ElVal->IsVrUnknown() )
329 // We thought this was explicit VR, but we end up with an
330 // implicit VR tag. Let's backtrack.
331 dbg.Verbose(1, "gdcmHeader::FindVR:", "Falsely explicit vr file");
332 fseek(fp, PositionOnEntry, SEEK_SET);
333 // When this element is known in the dictionary we shall use, e.g. for
334 // the semantics (see the usage of IsAnInteger), the vr proposed by the
335 // dictionary entry. Still we have to flag the element as implicit since
336 // we know now our assumption on expliciteness is not furfilled.
338 if ( ElVal->IsVrUnknown() )
339 ElVal->SetVR("Implicit");
340 ElVal->SetImplicitVr();
344 * \ingroup gdcmHeader
345 * \brief Determines if the Transfer Syntax was allready encountered
346 * and if it corresponds to a Big Endian one.
348 * @return True when big endian found. False in all other cases.
350 bool gdcmHeader::IsBigEndianTransferSyntax(void) {
351 ElValue* Element = PubElVals.GetElement(0x0002, 0x0010);
354 LoadElementValueSafe(Element);
355 string Transfer = Element->GetValue();
356 if ( Transfer == "1.2.840.10008.1.2.2" )
361 void gdcmHeader::FixFoundLength(ElValue * ElVal, guint32 FoudLength) {
362 // Heuristic: a final fix.
363 if ( FoudLength == 0xffffffff)
365 ElVal->SetLength(FoudLength);
368 void gdcmHeader::FindLength( ElValue * ElVal) {
369 guint16 element = ElVal->GetElement();
370 string vr = ElVal->GetVR();
373 if ( (filetype == ExplicitVR) && ! ElVal->IsImplicitVr() ) {
375 if ( (vr=="OB") || (vr=="OW") || (vr=="SQ") || (vr=="UN") ) {
376 // The following reserved two bytes (see PS 3.5-2001, section
377 // 7.1.2 Data element structure with explicit vr p27) must be
378 // skipped before proceeding on reading the length on 4 bytes.
379 fseek(fp, 2L, SEEK_CUR);
380 FixFoundLength(ElVal, ReadInt32());
384 // Length is encoded on 2 bytes.
385 length16 = ReadInt16();
387 // We can tell the current file is encoded in big endian (like
388 // Data/US-RGB-8-epicard) when we find the "Transfer Syntax" tag
389 // and it's value is the one of the encoding of a bie endian file.
390 // In order to deal with such big endian encoded files, we have
391 // (at least) two strategies:
392 // * when we load the "Transfer Syntax" tag with value of big endian
393 // encoding, we raise the proper flags. Then we wait for the end
394 // of the META group (0x0002) among which is "Transfer Syntax",
395 // before switching the swap code to big endian. We have to postpone
396 // the switching of the swap code since the META group is fully encoded
397 // in little endian, and big endian coding only starts at the next
398 // group. The corresponding code can be hard to analyse and adds
399 // many additional unnecessary tests for regular tags.
400 // * the second strategy consist to wait for trouble, that shall appear
401 // when we find the first group with big endian encoding. This is
402 // easy to detect since the length of a "Group Length" tag (the
403 // ones with zero as element number) has to be of 4 (0x0004). When we
404 // encouter 1024 (0x0400) chances are the encoding changed and we
405 // found a group with big endian encoding.
406 // We shall use this second strategy. In order make sure that we
407 // can interpret the presence of an apparently big endian encoded
408 // length of a "Group Length" without committing a big mistake, we
409 // add an additional check: we look in the allready parsed elements
410 // for the presence of a "Transfer Syntax" whose value has to be "big
411 // endian encoding". When this is the case, chances are we got our
412 // hands on a big endian encoded file: we switch the swap code to
413 // big endian and proceed...
414 if ( (element == 0) && (length16 == 1024) ) {
415 if ( ! IsBigEndianTransferSyntax() )
416 throw Error::FileReadError(fp, "gdcmHeader::FindLength");
418 SwitchSwapToBigEndian();
419 // Restore the unproperly loaded values i.e. the group, the element
420 // and the dictionary entry depending on them.
421 guint16 CorrectGroup = SwapShort(ElVal->GetGroup());
422 guint16 CorrectElem = SwapShort(ElVal->GetElement());
423 gdcmDictEntry * NewTag = IsInDicts(CorrectGroup, CorrectElem);
425 // This correct tag is not in the dictionary. Create a new one.
426 NewTag = new gdcmDictEntry(CorrectGroup, CorrectElem);
428 // FIXME this can create a memory leaks on the old entry that be
429 // left unreferenced.
430 ElVal->SetDictEntry(NewTag);
433 // Heuristic: well some files are really ill-formed.
434 if ( length16 == 0xffff) {
436 dbg.Verbose(0, "gdcmHeader::FindLength",
437 "Erroneous element length fixed.");
439 FixFoundLength(ElVal, (guint32)length16);
443 // Either implicit VR or a non DICOM conformal (see not below) explicit
444 // VR that ommited the VR of (at least) this element. Farts happen.
445 // [Note: according to the part 5, PS 3.5-2001, section 7.1 p25
446 // on Data elements "Implicit and Explicit VR Data Elements shall
447 // not coexist in a Data Set and Data Sets nested within it".]
448 // Length is on 4 bytes.
449 FixFoundLength(ElVal, ReadInt32());
453 * \ingroup gdcmHeader
454 * \brief Swaps back the bytes of 4-byte long integer accordingly to
457 * @return The suggested integer.
459 guint32 gdcmHeader::SwapLong(guint32 a) {
460 // FIXME: il pourrait y avoir un pb pour les entiers negatifs ...
465 a=( ((a<<24) & 0xff000000) | ((a<<8) & 0x00ff0000) |
466 ((a>>8) & 0x0000ff00) | ((a>>24) & 0x000000ff) );
470 a=( ((a<<16) & 0xffff0000) | ((a>>16) & 0x0000ffff) );
474 a=( ((a<<8) & 0xff00ff00) | ((a>>8) & 0x00ff00ff) );
477 dbg.Error(" gdcmHeader::SwapLong : unset swap code");
484 * \ingroup gdcmHeader
485 * \brief Swaps the bytes so they agree with the processor order
486 * @return The properly swaped 16 bits integer.
488 guint16 gdcmHeader::SwapShort(guint16 a) {
489 if ( (sw==4321) || (sw==2143) )
490 a =(((a<<8) & 0x0ff00) | ((a>>8)&0x00ff));
494 void gdcmHeader::SkipElementValue(ElValue * ElVal) {
495 //FIXME don't dump the returned value
496 (void)fseek(fp, (long)ElVal->GetLength(), SEEK_CUR);
499 void gdcmHeader::SetMaxSizeLoadElementValue(long NewSize) {
502 if ((guint32)NewSize >= (guint32)0xffffffff) {
503 MaxSizeLoadElementValue = 0xffffffff;
506 MaxSizeLoadElementValue = NewSize;
510 * \ingroup gdcmHeader
511 * \brief Loads the element if it's size is not to big.
512 * @param ElVal Element whose value shall be loaded.
513 * @param MaxSize Size treshold above which the element value is not
514 * loaded in memory. The element value is allways loaded
515 * when MaxSize is equal to UINT32_MAX.
518 void gdcmHeader::LoadElementValue(ElValue * ElVal) {
520 guint16 group = ElVal->GetGroup();
521 guint16 elem = ElVal->GetElement();
522 string vr = ElVal->GetVR();
523 guint32 length = ElVal->GetLength();
524 bool SkipLoad = false;
526 fseek(fp, (long)ElVal->GetOffset(), SEEK_SET);
528 // Sequences not treated yet !
532 // Heuristic : a sequence "contains" a set of tags (called items). It looks
533 // like the last tag of a sequence (the one that terminates the sequence)
534 // has a group of 0xfffe (with a dummy length).
535 if( group == 0xfffe )
538 // The group length doesn't represent data to be loaded in memory, since
539 // each element of the group shall be loaded individualy.
544 // FIXME the following skip is not necessary
545 SkipElementValue(ElVal);
547 ElVal->SetValue("gdcm::Skipped");
551 // When the length is zero things are easy:
557 // Values bigger than specified are not loaded.
558 if (length > MaxSizeLoadElementValue) {
560 s << "gdcm::NotLoaded.";
561 s << " Address:" << (long)ElVal->GetOffset();
562 s << " Length:" << ElVal->GetLength();
563 //mesg += " Length:" + ElVal->GetLength();
564 ElVal->SetValue(s.str());
568 // When an integer is expected, read and convert the following two or
569 // four bytes properly i.e. as an integer as opposed to a string.
570 if ( IsAnInteger(ElVal) ) {
573 NewInt = ReadInt16();
574 } else if( length == 4 ) {
575 NewInt = ReadInt32();
577 dbg.Error(true, "LoadElementValue: Inconsistency when reading Int.");
579 //FIXME: make the following an util fonction
582 ElVal->SetValue(s.str());
586 // FIXME The exact size should be length if we move to strings or whatever
587 char* NewValue = (char*)g_malloc(length+1);
589 dbg.Verbose(1, "LoadElementValue: Failed to allocate NewValue");
594 item_read = fread(NewValue, (size_t)length, (size_t)1, fp);
595 if ( item_read != 1 ) {
597 Error::FileReadError(fp, "gdcmHeader::LoadElementValue");
598 ElVal->SetValue("gdcm::UnRead");
601 ElVal->SetValue(NewValue);
605 * \ingroup gdcmHeader
606 * \brief Loads the element while preserving the current
607 * underlying file position indicator as opposed to
608 * to LoadElementValue that modifies it.
609 * @param ElVal Element whose value shall be loaded.
612 void gdcmHeader::LoadElementValueSafe(ElValue * ElVal) {
613 long PositionOnEntry = ftell(fp);
614 LoadElementValue(ElVal);
615 fseek(fp, PositionOnEntry, SEEK_SET);
619 guint16 gdcmHeader::ReadInt16(void) {
622 item_read = fread (&g, (size_t)2,(size_t)1, fp);
623 if ( item_read != 1 )
624 throw Error::FileReadError(fp, "gdcmHeader::ReadInt16");
629 guint32 gdcmHeader::ReadInt32(void) {
632 item_read = fread (&g, (size_t)4,(size_t)1, fp);
633 if ( item_read != 1 )
634 throw Error::FileReadError(fp, "gdcmHeader::ReadInt32");
640 * \ingroup gdcmHeader
641 * \brief Read the next tag without loading it's value
642 * @return On succes the newly created ElValue, NULL on failure.
645 ElValue * gdcmHeader::ReadNextElement(void) {
654 catch ( Error::FileReadError ) {
655 // We reached the EOF (or an error occured) and header parsing
656 // has to be considered as finished.
660 // Find out if the tag we encountered is in the dictionaries:
661 gdcmDictEntry * NewTag = IsInDicts(g, n);
663 NewTag = new gdcmDictEntry(g, n);
665 NewElVal = new ElValue(NewTag);
667 dbg.Verbose(1, "ReadNextElement: failed to allocate ElValue");
672 try { FindLength(NewElVal); }
673 catch ( Error::FileReadError ) { // Call it quits
676 NewElVal->SetOffset(ftell(fp));
680 bool gdcmHeader::IsAnInteger(ElValue * ElVal) {
681 guint16 group = ElVal->GetGroup();
682 guint16 element = ElVal->GetElement();
683 string vr = ElVal->GetVR();
684 guint32 length = ElVal->GetLength();
686 // When we have some semantics on the element we just read, and if we
687 // a priori know we are dealing with an integer, then we shall be
688 // able to swap it's element value properly.
689 if ( element == 0 ) { // This is the group length of the group
693 dbg.Error("gdcmHeader::IsAnInteger",
694 "Erroneous Group Length element length.");
697 if ( group % 2 != 0 )
698 // We only have some semantics on documented elements, which are
702 if ( (length != 4) && ( length != 2) )
703 // Swapping only make sense on integers which are 2 or 4 bytes long.
706 if ( (vr == "UL") || (vr == "US") || (vr == "SL") || (vr == "SS") )
709 if ( (group == 0x0028) && (element == 0x0005) )
710 // This tag is retained from ACR/NEMA
711 // CHECKME Why should "Image Dimensions" be a single integer ?
714 if ( (group == 0x0028) && (element == 0x0200) )
715 // This tag is retained from ACR/NEMA
722 * \ingroup gdcmHeader
723 * \brief Recover the offset (from the beginning of the file) of the pixels.
725 size_t gdcmHeader::GetPixelOffset(void) {
726 // If this file complies with the norm we should encounter the
727 // "Image Location" tag (0x0028, 0x0200). This tag contains the
728 // the group that contains the pixel data (hence the "Pixel Data"
729 // is found by indirection through the "Image Location").
730 // Inside the group pointed by "Image Location" the searched element
731 // is conventionally the element 0x0010 (when the norm is respected).
732 // When the "Image Location" is absent we default to group 0x7fe0.
735 string ImageLocation = GetPubElValByName("Image Location");
736 if ( ImageLocation == "UNFOUND" ) {
739 grPixel = (guint16) atoi( ImageLocation.c_str() );
741 if (grPixel != 0x7fe0)
742 // FIXME is this still necessary ?
743 // Now, this looks like an old dirty fix for Philips imager
747 ElValue* PixelElement = PubElVals.GetElement(grPixel, numPixel);
749 return PixelElement->GetOffset();
754 gdcmDictEntry * gdcmHeader::IsInDicts(guint32 group, guint32 element) {
755 gdcmDictEntry * found = (gdcmDictEntry*)0;
756 if (!RefPubDict && !RefShaDict) {
757 //FIXME build a default dictionary !
758 printf("FIXME in gdcmHeader::IsInDicts\n");
761 found = RefPubDict->GetTag(group, element);
766 found = RefShaDict->GetTag(group, element);
773 string gdcmHeader::GetPubElValByNumber(guint16 group, guint16 element) {
774 return PubElVals.GetElValue(group, element);
777 string gdcmHeader::GetPubElValByName(string TagName) {
778 return PubElVals.GetElValue(TagName);
782 * \ingroup gdcmHeader
783 * \brief Parses the header of the file but does NOT load element values.
785 void gdcmHeader::ParseHeader(void) {
786 ElValue * newElValue = (ElValue *)0;
790 while ( (newElValue = ReadNextElement()) ) {
791 SkipElementValue(newElValue);
792 PubElVals.Add(newElValue);
797 * \ingroup gdcmHeader
798 * \brief Loads the element values of all the elements present in the
799 * public tag based hash table.
801 void gdcmHeader::LoadElements(void) {
803 TagElValueHT ht = PubElVals.GetTagHt();
804 for (TagElValueHT::iterator tag = ht.begin(); tag != ht.end(); ++tag)
805 LoadElementValue(tag->second);
808 void gdcmHeader::PrintPubElVal(ostream & os) {
812 void gdcmHeader::PrintPubDict(ostream & os) {
813 RefPubDict->Print(os);