1 /*=========================================================================
2
3 Program: GDCM (Grassroots DICOM). A DICOM library
4
5 Copyright (c) 2006-2011 Mathieu Malaterre
6 All rights reserved.
7 See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
8
9 This software is distributed WITHOUT ANY WARRANTY; without even
10 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
11 PURPOSE. See the above copyright notice for more information.
12
13 =========================================================================*/
14 #include "gdcmDataSet.h"
15 #include "gdcmPrivateTag.h"
16
17 namespace gdcm_ns
18 {
19 DataElement DataSet::DEEnd = DataElement( Tag(0xffff,0xffff) );
20
GetDEEnd() const21 const DataElement& DataSet::GetDEEnd() const
22 {
23 return DEEnd;
24 }
25
GetPrivateCreator(const Tag & t) const26 std::string DataSet::GetPrivateCreator(const Tag &t) const
27 {
28 if( t.IsPrivate() && !t.IsPrivateCreator() )
29 {
30 Tag pc = t.GetPrivateCreator();
31 if( pc.GetElement() )
32 {
33 const DataElement r(pc);
34 ConstIterator it = DES.find(r);
35 if( it == DES.end() )
36 {
37 // FIXME, could this happen ?
38 return "";
39 }
40 const DataElement &de = *it;
41 if( de.IsEmpty() ) return "";
42 const ByteValue *bv = de.GetByteValue();
43 assert( bv );
44 std::string owner = std::string(bv->GetPointer(),bv->GetLength());
45 // There should not be any trailing space character...
46 // TODO: tmp.erase(tmp.find_last_not_of(' ') + 1);
47 while( !owner.empty() && owner[owner.size()-1] == ' ' )
48 {
49 // osirix/AbdominalCT/36382443
50 owner.erase(owner.size()-1,1);
51 }
52 assert( owner.size() == 0 || owner[owner.size()-1] != ' ' );
53 return owner;
54 }
55 }
56 return "";
57 }
58
ComputeDataElement(const PrivateTag & t) const59 Tag DataSet::ComputeDataElement(const PrivateTag & t) const
60 {
61 gdcmDebugMacro( "Entering ComputeDataElement" );
62 //assert( t.IsPrivateCreator() ); // No this is wrong to do the assert: eg. (0x07a1,0x000a,"ELSCINT1")
63 // is valid because we have not yet done the mapping, so 0xa < 0x10 fails but might not later on
64 const Tag start(t.GetGroup(), 0x0010 ); // First possible private creator (0x0 -> 0x9 are reserved...)
65 const DataElement r(start);
66 ConstIterator it = DES.lower_bound(r);
67 const char *refowner = t.GetOwner();
68 assert( refowner );
69 bool found = false;
70 while( it != DES.end() && it->GetTag().GetGroup() == t.GetGroup() && it->GetTag().GetElement() < 0x100 )
71 {
72 //assert( it->GetTag().GetOwner() );
73 const ByteValue * bv = it->GetByteValue();
74 if( bv )
75 {
76 //if( strcmp( bv->GetPointer(), refowner ) == 0 )
77 std::string tmp(bv->GetPointer(),bv->GetLength());
78 // trim trailing whitespaces:
79 tmp.erase(tmp.find_last_not_of(' ') + 1);
80 assert( tmp.size() == 0 || tmp[ tmp.size() - 1 ] != ' ' ); // FIXME
81 if( System::StrCaseCmp( tmp.c_str(), refowner ) == 0 )
82 {
83 // found !
84 found = true;
85 break;
86 }
87 }
88 ++it;
89 }
90 gdcmDebugMacro( "In compute found is:" << found );
91 if (!found) return GetDEEnd().GetTag();
92 // else
93 // ok we found the Private Creator Data Element, let's construct the proper data element
94 Tag copy = t;
95 copy.SetPrivateCreator( it->GetTag() );
96 gdcmDebugMacro( "Compute found:" << copy );
97 return copy;
98 }
99
FindDataElement(const PrivateTag & t) const100 bool DataSet::FindDataElement(const PrivateTag &t) const
101 {
102 return FindDataElement( ComputeDataElement(t) );
103 }
104
GetDataElement(const PrivateTag & t) const105 const DataElement& DataSet::GetDataElement(const PrivateTag &t) const
106 {
107 return GetDataElement( ComputeDataElement(t) );
108 }
109
GetMediaStorage() const110 MediaStorage DataSet::GetMediaStorage() const
111 {
112 // Let's check 0008,0016:
113 // D 0008|0016 [UI] [SOP Class UID] [1.2.840.10008.5.1.4.1.1.7 ]
114 // ==> [Secondary Capture Image Storage]
115 const Tag tsopclassuid(0x0008, 0x0016);
116 if( !FindDataElement( tsopclassuid) )
117 {
118 gdcmDebugMacro( "No SOP Class UID" );
119 return MediaStorage::MS_END;
120 }
121 const DataElement &de = GetDataElement(tsopclassuid);
122 if( de.IsEmpty() )
123 {
124 gdcmDebugMacro( "Empty SOP Class UID" );
125 return MediaStorage::MS_END;
126 }
127 std::string ts;
128 {
129 const ByteValue *bv = de.GetByteValue();
130 assert( bv );
131 if( bv->GetPointer() && bv->GetLength() )
132 {
133 // Pad string with a \0
134 ts = std::string(bv->GetPointer(), bv->GetLength());
135 }
136 }
137 // Paranoid check: if last character of a VR=UI is space let's pretend this is a \0
138 if( !ts.empty() )
139 {
140 char &last = ts[ts.size()-1];
141 if( last == ' ' )
142 {
143 gdcmWarningMacro( "Media Storage Class UID: " << ts << " contained a trailing space character" );
144 last = '\0';
145 }
146 }
147 gdcmDebugMacro( "TS: " << ts );
148 MediaStorage ms = MediaStorage::GetMSType(ts.c_str());
149 if( ms == MediaStorage::MS_END )
150 {
151 gdcmWarningMacro( "Media Storage Class UID: " << ts << " is unknown" );
152 }
153 return ms;
154 }
155
156 } // end namespace gdcm_ns
157