+#define FASTTAGKEY 0
+
+// FIXME: Should rewrite this:
+#if FASTTAGKEY
+#include <iostream>
+#include <iomanip>
+#endif
+#if defined(_MSC_VER) && (_MSC_VER == 1200)
+/* ostream operator for std::string since VS6 does not provide it*/
+#include <iostream>
+#endif
+
+
+//-----------------------------------------------------------------------------
+/// \brief namespace for Grass root DiCoM
+namespace gdcm
+{
+
+// Centralize information about the gdcm dictionary in only one file:
+#ifndef PUB_DICT_PATH
+# define PUB_DICT_PATH "../Dicts/"
+#endif
+#define PUB_DICT_NAME "DicomV3Dict"
+#define PUB_DICT_FILENAME "gdcm.dic"
+#define DICT_ELEM "DicomDir.dic"
+#define DICT_TS "dicomTS.dic"
+#define DICT_VR "dicomVR.dic"
+#define DICT_GROUP_NAME "DictGroupName.dic"
+
+GDCM_EXPORT extern const std::string GDCM_UNKNOWN;
+GDCM_EXPORT extern const std::string GDCM_UNFOUND;
+GDCM_EXPORT extern const std::string GDCM_BINLOADED;
+GDCM_EXPORT extern const std::string GDCM_NOTLOADED;
+GDCM_EXPORT extern const std::string GDCM_UNREAD;
+
+/// \brief TagKey is made to hold the standard Dicom Tag (Group number, Element
+/// number)
+/// Instead of using the two '16 bits integers' as the Hask Table key, we
+/// converted into a string (e.g. 0x0018,0x0050 converted into "0018|0050")
+/// It appears to be a huge waste of time.
+/// We'll fix the mess up -without any change in the API- as soon as the bench
+/// marks are fully performed.
+
+#if FASTTAGKEY
+typedef union {
+ uint16_t tab[2];
+ uint32_t tagkey;
+ } TagKey;
+/* ostream operator for TagKey */
+inline std::ostream& operator<<(std::ostream& _O, TagKey _val)
+{
+ _O.setf( std::ios::right);
+ return (_O << std::hex << std::setw( 4 ) << std::setfill( '0' )
+ << _val.tab[0] << '|' << std::setw( 4 ) << std::setfill( '0' )
+ << _val.tab[1] << std::setfill( ' ' ) << std::dec);
+}
+inline bool operator==(TagKey _self, TagKey _val)
+{
+ return _self.tagkey == _val.tagkey;
+}
+inline bool operator<(TagKey _self, TagKey _val)
+{
+ // This expression is a tad faster but PrintFile output
+ // is more difficult to read
+ //return _self.tagkey < _val.tagkey;
+
+ // More usal order of dicom tags:
+ if( _self.tab[0] == _val.tab[0] )
+ return _self.tab[1] < _val.tab[1];
+ return _self.tab[0] < _val.tab[0];
+}
+#else
+typedef std::string TagKey;
+#endif
+#if defined(_MSC_VER) && (_MSC_VER == 1200)
+// Doing everything within gdcm namespace to avoid polluting 3d party software
+inline std::ostream& operator<<(std::ostream& _O, std::string _val)
+{
+ return _O << _val.c_str();
+}
+#endif
+typedef std::string TagName;
+
+enum FileType {
+ Unknown = 0,
+ ExplicitVR, // DicomDir is in this case. Except when it's ImplicitVR !...
+ ImplicitVR,
+ ACR,
+ ACR_LIBIDO
+};
+
+/// \brief type of the elements composing a DICOMDIR (for internal use only)
+enum DicomDirType {
+ DD_UNKNOWN = 0,
+ DD_META,
+ DD_PATIENT,
+ DD_STUDY,
+ DD_SERIE,
+ DD_IMAGE,
+ DD_VISIT
+};
+
+/// \brief comparison operators
+enum CompOperators {
+ GDCM_EQUAL = 0,
+ GDCM_DIFFERENT,
+ GDCM_GREATER,
+ GDCM_GREATEROREQUAL,
+ GDCM_LESS,
+ GDCM_LESSOREQUAL
+};
+/**
+ * \brief structure, for internal use only
+ */
+struct Element
+{
+ /// DicomGroup number
+ unsigned short int Group;
+ /// DicomElement number
+ unsigned short int Elem;
+ /// value (coded as a std::string) of the Element
+ std::string Value;
+};