+ DocEntry *entry = GetDocEntry(group, elem);
+ if ( entry )
+ return entry->GetLength();
+ return -1;
+}
+
+/**
+ * \brief Searches within Header Entries (Dicom Elements) parsed with
+ * the public [and private dictionaries]
+ * for the element value representation of a given tag..
+ * Obtaining the VR (Value Representation) might be needed by caller
+ * to convert the string typed content to caller's native type
+ * (think of C++ vs Python). The VR is actually of a higher level
+ * of semantics than just the native C++ type.
+ * @param group Group number of the searched tag.
+ * @param elem Element number of the searched tag.
+ * @return Corresponding element value representation when it exists,
+ * and the string GDCM_UNFOUND ("gdcm::Unfound") otherwise.
+ */
+std::string DocEntrySet::GetEntryVR(uint16_t group, uint16_t elem)
+{
+ DocEntry *entry = GetDocEntry(group, elem);
+ if ( entry )
+ return entry->GetVR();
+ return GDCM_UNFOUND;
+}
+
+/**
+ * \brief Same as \ref Document::GetDocEntry except it only
+ * returns a result when the corresponding entry is of type
+ * ValEntry.
+ * @param group Group number of the searched Dicom Element
+ * @param elem Element number of the searched Dicom Element
+ * @return When present, the corresponding ValEntry.
+ */
+ValEntry *DocEntrySet::GetValEntry(uint16_t group, uint16_t elem)
+{
+ DocEntry *currentEntry = GetDocEntry(group, elem);
+ if ( !currentEntry )
+ return NULL;
+
+ return dynamic_cast<ValEntry*>(currentEntry);
+}
+
+/**
+ * \brief Same as \ref Document::GetDocEntry except it only
+ * returns a result when the corresponding entry is of type
+ * BinEntry.
+ * @param group Group number of the searched Dicom Element
+ * @param elem Element number of the searched Dicom Element
+ * @return When present, the corresponding BinEntry.
+ */
+BinEntry *DocEntrySet::GetBinEntry(uint16_t group, uint16_t elem)
+{
+ DocEntry *currentEntry = GetDocEntry(group, elem);
+ if ( !currentEntry )
+ {
+ gdcmWarningMacro( "No corresponding BinEntry " << std::hex << group <<
+ "," << elem);
+ return NULL;
+ }
+
+ return dynamic_cast<BinEntry*>(currentEntry);
+}
+
+/**
+ * \brief Same as \ref Document::GetDocEntry except it only
+ * returns a result when the corresponding entry is of type
+ * SeqEntry.
+ * @param group Group number of the searched Dicom Element
+ * @param elem Element number of the searched Dicom Element
+ * @return When present, the corresponding SeqEntry.
+ */
+SeqEntry *DocEntrySet::GetSeqEntry(uint16_t group, uint16_t elem)
+{
+ DocEntry *currentEntry = GetDocEntry(group, elem);
+ if ( !currentEntry )
+ {
+ gdcmWarningMacro( "No corresponding SeqEntry " << std::hex << group <<
+ "," << elem);
+ return NULL;
+ }
+
+ return dynamic_cast<SeqEntry*>(currentEntry);
+}
+
+/**
+ * \brief Accesses an existing DocEntry (i.e. a Dicom Element)
+ * through it's (group, element) and modifies it's content with
+ * the given value.
+ * @param content new value (string) to substitute with
+ * @param group group number of the Dicom Element to modify
+ * @param elem element number of the Dicom Element to modify
+ */
+bool DocEntrySet::SetValEntry(std::string const &content,
+ uint16_t group, uint16_t elem)
+{
+ ValEntry *entry = GetValEntry(group, elem);
+ if (!entry )
+ {
+ gdcmWarningMacro( "No corresponding ValEntry " << std::hex << group <<
+ "," << elem << " element (try promotion first).");
+ return false;
+ }
+ return SetValEntry(content,entry);
+}
+
+/**
+ * \brief Accesses an existing DocEntry (i.e. a Dicom Element)
+ * through it's (group, element) and modifies it's content with
+ * the given value.
+ * @param content new value (void* -> uint8_t*) to substitute with
+ * @param lgth new value length
+ * @param group group number of the Dicom Element to modify
+ * @param elem element number of the Dicom Element to modify
+ */
+bool DocEntrySet::SetBinEntry(uint8_t *content, int lgth,
+ uint16_t group, uint16_t elem)
+{
+ BinEntry *entry = GetBinEntry(group, elem);
+ if (!entry )
+ {
+ gdcmWarningMacro( "No corresponding ValEntry " << std::hex << group <<
+ "," << elem << " element (try promotion first).");
+ return false;
+ }
+
+ return SetBinEntry(content,lgth,entry);
+}
+
+/**
+ * \brief Accesses an existing DocEntry (i.e. a Dicom Element)
+ * and modifies it's content with the given value.
+ * @param content new value (string) to substitute with
+ * @param entry Entry to be modified
+ */
+bool DocEntrySet::SetValEntry(std::string const &content, ValEntry *entry)
+{
+ if (entry)
+ {
+ entry->SetValue(content);
+ return true;
+ }
+ return false;
+}
+
+/**
+ * \brief Accesses an existing BinEntry (i.e. a Dicom Element)
+ * and modifies it's content with the given value.
+ * @param content new value (void* -> uint8_t*) to substitute with
+ * @param entry Entry to be modified
+ * @param lgth new value length
+ */
+bool DocEntrySet::SetBinEntry(uint8_t *content, int lgth, BinEntry *entry)
+{
+ if (entry)
+ {
+ entry->SetBinArea(content);
+ entry->SetLength(lgth);
+ entry->SetValue(GDCM_BINLOADED);
+ return true;
+ }
+ return false;
+}
+
+/**
+ * \brief Modifies the value of a given Doc Entry (Dicom Element)
+ * when it exists. Create it with the given value when unexistant.
+ * @param value (string) Value to be set
+ * @param group Group number of the Entry
+ * @param elem Element number of the Entry
+ * @param vr V(alue) R(epresentation) of the Entry -if private Entry-
+ * \return pointer to the modified/created Header Entry (NULL when creation
+ * failed).
+ */
+ValEntry *DocEntrySet::InsertValEntry(std::string const &value,
+ uint16_t group, uint16_t elem,
+ TagName const &vr )
+{
+ ValEntry *valEntry = 0;
+ DocEntry *currentEntry = GetDocEntry( group, elem );
+
+ if (currentEntry)
+ {
+ valEntry = dynamic_cast<ValEntry *>(currentEntry);
+
+ // Verify the VR
+ if ( valEntry )
+ if ( valEntry->GetVR()!=vr )
+ valEntry = NULL;
+
+ // if currentEntry doesn't correspond to the requested valEntry
+ if ( !valEntry)
+ {
+ if ( !RemoveEntry(currentEntry) )
+ {
+ gdcmWarningMacro( "Removal of previous DocEntry failed.");
+
+ return NULL;
+ }
+ }
+ }
+
+ // Create a new valEntry if necessary
+ if ( !valEntry )
+ {
+ valEntry = NewValEntry( group, elem, vr );
+
+ if ( !AddEntry(valEntry) )
+ {
+ gdcmWarningMacro("AddEntry failed although this is a creation.");
+
+ delete valEntry;
+ return NULL;
+ }
+ }
+
+ // Set the binEntry value
+ SetValEntry(value, valEntry); // The std::string value
+ return valEntry;
+}
+
+/**
+ * \brief Modifies the value of a given Header Entry (Dicom Element)
+ * when it exists. Create it with the given value when unexistant.
+ * A copy of the binArea is made to be kept in the Document.
+ * @param binArea (binary) value to be set
+ * @param lgth length of the Bin Area we want to set
+ * @param group Group number of the Entry
+ * @param elem Element number of the Entry
+ * @param vr V(alue) R(epresentation) of the Entry -if private Entry-
+ * \return pointer to the modified/created Header Entry (NULL when creation
+ * failed).
+ */
+BinEntry *DocEntrySet::InsertBinEntry(uint8_t *binArea, int lgth,
+ uint16_t group, uint16_t elem,
+ TagName const &vr )
+{
+ BinEntry *binEntry = 0;
+ DocEntry *currentEntry = GetDocEntry( group, elem );
+
+ // Verify the currentEntry
+ if (currentEntry)
+ {
+ binEntry = dynamic_cast<BinEntry *>(currentEntry);
+
+ // Verify the VR
+ if ( binEntry )
+ if ( binEntry->GetVR()!=vr )
+ binEntry = NULL;
+
+ // if currentEntry doesn't correspond to the requested valEntry
+ if ( !binEntry)
+ {
+ if ( !RemoveEntry(currentEntry) )
+ {
+ gdcmWarningMacro( "Removal of previous DocEntry failed.");
+
+ return NULL;
+ }
+ }
+ }
+
+ // Create a new binEntry if necessary
+ if ( !binEntry)
+ {
+ binEntry = NewBinEntry(group, elem, vr);
+
+ if ( !AddEntry(binEntry) )
+ {
+ gdcmWarningMacro( "AddEntry failed although this is a creation.");
+
+ delete binEntry;
+ return NULL;
+ }
+ }
+
+ // Set the binEntry value
+ uint8_t *tmpArea;
+ if ( lgth>0 && binArea )
+ {
+ tmpArea = new uint8_t[lgth];
+ memcpy(tmpArea,binArea,lgth);
+ }
+ else
+ {
+ tmpArea = 0;
+ }
+ if ( !SetBinEntry(tmpArea,lgth,binEntry) )
+ {
+ if ( tmpArea )
+ {
+ delete[] tmpArea;
+ }
+ }
+
+ return binEntry;
+}
+
+/**
+ * \brief Modifies the value of a given Doc Entry (Dicom Element)
+ * when it exists. Creates it when unexistant.
+ * @param group Group number of the Entry
+ * @param elem Element number of the Entry
+ * \return pointer to the modified/created SeqEntry (NULL when creation
+ * failed).
+ */
+SeqEntry *DocEntrySet::InsertSeqEntry(uint16_t group, uint16_t elem)
+{
+ SeqEntry *seqEntry = 0;
+ DocEntry *currentEntry = GetDocEntry( group, elem );
+
+ // Verify the currentEntry
+ if ( currentEntry )
+ {
+ seqEntry = dynamic_cast<SeqEntry *>(currentEntry);
+
+ // Verify the VR
+ if ( seqEntry )
+ seqEntry = NULL;
+
+ // if currentEntry doesn't correspond to the requested seqEntry
+ if ( !seqEntry )
+ {
+ if (!RemoveEntry(currentEntry))
+ {
+ gdcmWarningMacro( "Removal of previous DocEntry failed.");
+
+ return NULL;
+ }
+ }
+ }
+ // Create a new seqEntry if necessary
+ if ( !seqEntry )
+ {
+ seqEntry = NewSeqEntry(group, elem);
+
+ if ( !AddEntry(seqEntry) )
+ {
+ gdcmWarningMacro( "AddEntry failed although this is a creation.");
+
+ delete seqEntry;
+ return NULL;
+ }
+ }
+
+ // TODO : Find a trick to insert a SequenceDelimitationItem
+ // in the SeqEntry, at the end.
+ return seqEntry;
+}
+
+/**
+ * \brief Checks if a given Dicom Element exists within the H table
+ * @param group Group number of the searched Dicom Element
+ * @param elem Element number of the searched Dicom Element
+ * @return true is found
+ */
+bool DocEntrySet::CheckIfEntryExist(uint16_t group, uint16_t elem )
+{
+ return GetDocEntry(group,elem)!=NULL;