+#include <algorithm>
+#include <sys/types.h>
+
+#ifdef _MSC_VER
+# define getcwd _getcwd
+#endif
+
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+# include <direct.h>
+#else
+# include <unistd.h>
+#endif
+
+#if defined(__BORLANDC__)
+ #include <mem.h> // for memset
+#endif
+
+// ----------------------------------------------------------------------------
+// Note for future developpers
+// ----------------------------------------------------------------------------
+//
+// Dicom PS 3.3 describes the relationship between Directory Records, as follow
+// (see also PS 4.3, 2004, page 50 for Entity-Relationship model)
+//
+// Directory Record Type Directory Record Types which may be included
+// in the next lower-level directory Entity
+//
+// (Root directory Entity) PATIENT, TOPIC, PRIVATE
+//
+// PATIENT STUDY, PRIVATE
+//
+// STUDY SERIES, VISIT, RESULTS, STUDY COMPONENT, PRIVATE
+//
+// SERIES IMAGE, OVERLAYS, MODALITY LUT, VOI LUT,
+// CURVE, STORED PRINT, RT DOSE, RT STRUCTURE SET
+// RT PLAN, RT TREAT RECORD, PRESENTATION, WAVEFORM,
+// SR DOCUMENT, KEY OBJECT DOC, SPECTROSCOPY,
+// RAW DATA, REGISTRATION, FIDUCIAL, PRIVATE,
+// ENCAP DOC
+// IMAGE
+// OVERLAY
+// MODALITY LUT
+// VOI LUT
+// CURVE
+// STORED PRINT
+// RT DOSE
+// RT STRUCTURE SET
+// RT PLAN
+// RT TREAT RECORD
+// PRESENTATION
+// WAVEFORM
+// SR DOCUMENT
+// KEY OBJECT DOC
+// SPECTROSCOPY
+// RAW DATA
+// REGISTRATION
+// FIDUCIAL
+// PRIVATE
+// ENCAP DOC
+//
+
+/*
+
+// see also : ftp://medical.nema.org/medical/dicom/final/cp343_ft.doc
+
+RELATIONSHIP BETWEEN DIRECTORY RECORDS
+
+Directory Record Type Directory Record Types which may be included
+ in the next lower-level directory Entity
+
+(Root Directory Entity) PATIENT, TOPIC, PRIVATE
+
+PATIENT STUDY, PRIVATE
+
+STUDY SERIES, VISIT, RESULTS, STUDY COMPONENT, PRIVATE
+
+SERIES IMAGE, OVERLAY, MODALITY LUT, VOI LUT, CURVE,
+ STORED PRINT, RT DOSE, RT STRUCTURE SET, RT PLAN,
+ RT TREAT RECORD, PRESENTATION, WAVEFORM, SR DOCUMENT,
+ KEY OBJECT DOC, SPECTROSCOPY, RAW DATA, PRIVATE
+
+IMAGE PRIVATE
+OVERLAY PRIVATE
+MODALITY LUT PRIVATE
+VOI LUT PRIVATE
+CURVE PRIVATE
+STORED PRINT PRIVATE
+RT DOSE PRIVATE
+RT STRUCTURE SET PRIVATE
+RT PLAN PRIVATE
+RT TREAT RECORD PRIVATE
+PRESENTATION PRIVATE
+WAVEFORM PRIVATE
+SR DOCUMENT PRIVATE
+KEY OBJECT DOC PRIVATE
+SPECTROSCOPY PRIVATE
+RAW DATA PRIVATE
+
+TOPIC STUDY, SERIES, IMAGE, OVERLAY, MODALITY LUT, VOI LUT,
+ CURVE, STORED PRINT, RT DOSE, RT STRUCTURE SET,
+ RT PLAN, RT TREAT RECORD, PRESENTATION, WAVEFORM,
+ SR DOCUMENT, KEY OBJECT DOC, SPECTROSCOPY, RAW DATA,
+ PRIVATE
+
+VISIT PRIVATE
+
+RESULTS INTERPRETATION, PRIVATE
+
+INTERPRETATION PRIVATE
+STUDY COMPONENT PRIVATE
+PRIVATE PRIVATE, (any of the above as privately defined)
+MRDR (Not applicable)
+
+Note : Directory Record Types PRINT QUEUE, FILM SESSION, FILM BOX, and
+ IMAGE BOX were previously defined in DICOM. They have been retired.
+ See PS 3.3-1998.
+*/
+
+// ----------------------
+// The current gdcm version only deals with :
+//
+// (Root directory Entity) PATIENT
+// PATIENT STUDY
+// STUDY SERIES
+// STUDY VISIT
+// SERIES IMAGE
+// IMAGE /
+//
+// DicomDir::CreateDicomDir will have to be completed
+// Treelike structure management will have to be upgraded
+// ----------------------------------------------------------------------------
+
+namespace GDCM_NAME_SPACE
+{
+//-----------------------------------------------------------------------------
+// Constructor / Destructor
+/**
+ * \brief Constructor : creates an empty DicomDir
+ */
+DicomDir::DicomDir()
+{
+ Initialize(); // sets all private fields to NULL
+ ParseDir = false;
+ NewMeta();
+}
+
+//#ifndef GDCM_LEGACY_REMOVE
+/**
+ * \brief Constructor Parses recursively the directory and creates the DicomDir
+ * or uses an already built DICOMDIR, depending on 'parseDir' value.
+ * @param fileName name
+ * - of the root directory (parseDir = true)
+ * - of the DICOMDIR (parseDir = false)
+ * @param parseDir boolean
+ * - true if user passed an entry point
+ * and wants to explore recursively the directories
+ * - false if user passed an already built DICOMDIR file
+ * and wants to use it
+ * @deprecated use : new DicomDir() + [ SetLoadMode(lm) + ] SetDirectoryName(name)
+ * or : new DicomDir() + SetFileName(name)
+ */
+ /*
+DicomDir::DicomDir(std::string const &fileName, bool parseDir ):
+ Document( )
+{
+ // At this step, Document constructor is already executed,
+ // whatever user passed (either a root directory or a DICOMDIR)
+ // and whatever the value of parseDir was.
+ // (nothing is checked in Document constructor, to avoid overhead)
+
+ ParseDir = parseDir;
+ SetLoadMode (LD_ALL); // concerns only dicom files
+ SetFileName( fileName );
+ Load( );
+}
+*/
+//#endif
+
+/**
+ * \brief Canonical destructor
+ */
+DicomDir::~DicomDir()
+{
+ ClearPatient();
+ if ( MetaElems )
+ {
+ MetaElems->Delete();
+ }
+}
+
+//-----------------------------------------------------------------------------
+// Public
+
+/**
+ * \brief Loader. use SetFileName(fn)
+ * or SetLoadMode(lm) + SetDirectoryName(dn) before !
+ * @return false if file cannot be open or no swap info was found,
+ * or no tag was found.
+ */
+bool DicomDir::Load( )
+{
+ if (!ParseDir)
+ {
+ if ( ! this->Document::Load( ) )
+ return false;
+ }
+ return DoTheLoadingJob( );
+}
+//#ifndef GDCM_LEGACY_REMOVE
+/**
+ * \brief Loader. (DEPRECATED : kept not to break the API)
+ * @param fileName file to be open for parsing
+ * @return false if file cannot be open or no swap info was found,
+ * or no tag was found.
+ * @deprecated use SetFileName(n) + Load() instead
+ */
+ /*
+bool DicomDir::Load(std::string const &fileName )
+{
+ // We should clean out anything that already exists.
+ Initialize(); // sets all private fields to NULL
+
+ SetFileName( fileName );
+ if (!ParseDir)
+ {
+ if ( ! this->Document::Load( ) )
+ return false;
+ }
+ return DoTheLoadingJob( );
+}
+*/
+//#endif
+
+/**
+ * \brief Does the Loading Job (internal use only)
+ * @return false if file cannot be open or no swap info was found,
+ * or no tag was found.
+ */
+bool DicomDir::DoTheLoadingJob( )
+{
+ Progress = 0.0f;
+ Abort = false;
+
+ if (!ParseDir)
+ {
+ // Only if user passed a DICOMDIR
+ // ------------------------------
+ Fp = 0;
+ if (!Document::Load() )
+ {
+ return false;
+ }
+
+ if ( GetFirstEntry() == 0 ) // when user passed a Directory to parse
+ {
+ gdcmWarningMacro( "Entry HT empty for file: "<< GetFileName());
+ return false;
+ }
+ // Directory record sequence
+ DocEntry *e = GetDocEntry(0x0004, 0x1220);
+ if ( !e )
+ {
+ gdcmWarningMacro( "NO 'Directory record sequence' (0x0004,0x1220)"
+ << " in file " << GetFileName());
+ return false;
+ }
+ else
+ {
+ CreateDicomDir();
+ }
+ }
+ else
+ {
+ // Only if user passed a root directory
+ // ------------------------------------
+ if ( GetFileName() == "." )
+ {
+ // user passed '.' as Name
+ // we get current directory name
+ char buf[2048];
+ const char *cwd = getcwd(buf, 2048);
+ if( cwd )
+ {
+ SetFileName( buf ); // will be converted into a string
+ }
+ else
+ {
+ gdcmErrorMacro( "Path was too long to fit on 2048 bytes" );
+ }
+ }
+ NewMeta();
+ gdcmDebugMacro( "Parse directory and create the DicomDir : "
+ << GetFileName() );
+ ParseDirectory();
+ }
+ return true;
+}
+
+/**
+ * \brief This predicate, based on hopefully reasonable heuristics,
+ * decides whether or not the current document was properly parsed
+ * and contains the mandatory information for being considered as
+ * a well formed and usable DicomDir.
+ * @return true when Document is the one of a reasonable DicomDir,
+ * false otherwise.
+ */
+bool DicomDir::IsReadable()
+{
+ if ( Filetype == Unknown )
+ {
+ gdcmErrorMacro( "Wrong filetype for " << GetFileName());
+ return false;
+ }
+ if ( !MetaElems )
+ {
+ gdcmWarningMacro( "Meta Elements missing in DicomDir");
+ return false;
+ }
+ if ( Patients.size() <= 0 )
+ {
+ gdcmWarningMacro( "NO Patient in DicomDir");
+ return false;
+ }
+
+ return true;
+}
+
+/**
+ * \brief adds *the* Meta to a partially created DICOMDIR
+ */
+DicomDirMeta *DicomDir::NewMeta()
+{
+ if ( MetaElems )
+ {
+ MetaElems->Delete();
+ }
+ DocEntry *entry = GetFirstEntry();
+ if ( entry )
+ {
+ MetaElems = DicomDirMeta::New(true); // true = empty
+
+ entry = GetFirstEntry();
+ while( entry )
+ {
+ if ( dynamic_cast<SeqEntry *>(entry) )
+ break;
+
+ MetaElems->AddEntry(entry);
+ RemoveEntry(entry);
+
+ entry = GetFirstEntry();
+ }
+ }
+ else // after root directory parsing
+ {
+ MetaElems = DicomDirMeta::New(false); // false = not empty
+ }
+ MetaElems->SetSQItemNumber(0); // To avoid further missprinting
+ return MetaElems;
+}
+
+/**
+ * \brief adds a new Patient (with the basic elements) to a partially created
+ * DICOMDIR
+ */
+DicomDirPatient *DicomDir::NewPatient()
+{
+ DicomDirPatient *dd = DicomDirPatient::New();
+ AddPatientToEnd( dd );
+ return dd;
+}
+
+/**
+ * \brief Remove all Patients
+ */
+void DicomDir::ClearPatient()
+{
+ for(ListDicomDirPatient::iterator cc = Patients.begin();
+ cc!= Patients.end();
+ ++cc)
+ {
+ (*cc)->Unregister();
+ }
+ Patients.clear();
+}
+
+/**
+ * \brief Get the first entry while visiting the DicomDirPatients
+ * \return The first DicomDirPatient if found, otherwhise NULL
+ */
+DicomDirPatient *DicomDir::GetFirstPatient()
+{
+ ItPatient = Patients.begin();
+ if ( ItPatient != Patients.end() )
+ return *ItPatient;
+ return NULL;
+}
+
+/**
+ * \brief Get the next entry while visiting the DicomDirPatients
+ * \note : meaningfull only if GetFirstEntry already called
+ * \return The next DicomDirPatient if found, otherwhise NULL
+ */
+DicomDirPatient *DicomDir::GetNextPatient()
+{
+ gdcmAssertMacro (ItPatient != Patients.end());
+
+ ++ItPatient;
+ if ( ItPatient != Patients.end() )
+ return *ItPatient;
+ return NULL;
+}