gdcmDict.cxx

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00001 /*=========================================================================
00002                                                                                 
00003   Program:   gdcm
00004   Module:    $RCSfile: gdcmDict.cxx,v $
00005   Language:  C++
00006   Date:      $Date: 2007/05/23 14:18:09 $
00007   Version:   $Revision: 1.87 $
00008                                                                                 
00009   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
00010   l'Image). All rights reserved. See Doc/License.txt or
00011   http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
00012                                                                                 
00013      This software is distributed WITHOUT ANY WARRANTY; without even
00014      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00015      PURPOSE.  See the above copyright notices for more information.
00016                                                                                 
00017 =========================================================================*/
00018 
00019 #include "gdcmDict.h"
00020 #include "gdcmUtil.h"
00021 #include "gdcmDebug.h"
00022 
00023 #include <fstream>
00024 #include <iostream>
00025 #include <iomanip>
00026 
00027 namespace GDCM_NAME_SPACE
00028 {
00029 //-----------------------------------------------------------------------------
00032 void FillDefaultDataDict(Dict *d);
00033 
00034 //-----------------------------------------------------------------------------
00035 // Constructor / Destructor
00039 Dict::Dict( )
00040 {
00041    Filename="";
00042 }
00043 
00048 Dict::Dict(std::string const &filename)
00049 {
00050    gdcmDebugMacro( "in Dict::Dict, filename =[" << filename << "]" );
00051    std::ifstream from( filename.c_str() );
00052    if ( !from )
00053    {
00054       gdcmWarningMacro( "Can't open dictionary" << filename.c_str());
00055       // Using default embeded one:
00056       FillDefaultDataDict( this );
00057    }
00058    else
00059    { 
00060       gdcmDebugMacro( "in Dict::Dict, DoTheLoadingJob filename =[" 
00061                     << filename << "]" );
00062       DoTheLoadingJob(from);
00063       Filename = filename;
00064    }
00065 }
00066 
00070 Dict::~Dict()
00071 {
00072    ClearEntry();
00073 }
00074 
00075 //-----------------------------------------------------------------------------
00076 // Public
00077 
00083 bool Dict::AddDict(std::string const &filename)
00084 {
00085    std::ifstream from( filename.c_str() );
00086    if ( !from )
00087    {
00088       gdcmWarningMacro( "Can't open dictionary" << filename.c_str());
00089       return false;
00090    }
00091    else
00092    {
00093       DoTheLoadingJob(from);
00094       return true;
00095    }
00096 }
00097 
00103 bool Dict::RemoveDict(std::string const &filename)
00104 {
00105    std::ifstream from( filename.c_str() );
00106    if ( !from )
00107    {
00108       gdcmWarningMacro( "Can't open dictionary" << filename.c_str());
00109       return false;
00110    }
00111    else
00112    {
00113       uint16_t group;
00114       uint16_t elem;
00115       TagName vr;
00116       TagName vm;
00117       TagName name;
00118 
00119       while ( true )
00120       {
00121          from >> std::hex;
00122          from >> group;
00123 
00124          if (from.eof())
00125             break;
00126 
00127          from >> elem;
00128          from >> vr;
00129          from >> vm;
00130         // from >> std::ws;  //remove white space
00131          std::getline(from, name);
00132  
00133          RemoveEntry(group,elem);
00134       }
00135       from.close();
00136       return true;
00137    }
00138 }
00139 
00145 bool Dict::AddEntry(DictEntry *newEntry) 
00146 {
00147    const TagKey &key = newEntry->GetKey();
00148 
00149    if ( KeyHt.count(key) == 1 )
00150    {
00151       gdcmErrorMacro( "Already present:" << key );
00152       return false;
00153    } 
00154    else 
00155    {
00156       newEntry->Register();
00157       KeyHt.insert( TagKeyHT::value_type(key, newEntry));
00158       return true;
00159    }
00160 }
00161 
00162 /*
00163  * \ brief  replaces an already existing Dicom Element by a new one
00164  * @ param   newEntry new entry (overwrites any previous one with same tag)
00165  * @ return  false if Dicom Element doesn't exist
00166  */
00167  
00168  /* seems to be useless
00169  
00170 bool Dict::ReplaceEntry(DictEntry *newEntry) // seems to be useless
00171 {
00172    const TagKey &key = newEntry->GetKey();
00173    if ( RemoveEntry(key) )
00174    {
00175       newEntry->Register();
00176       KeyHt.insert( TagKeyHT::value_type(key, newEntry));
00177       return true;
00178    } 
00179    return false;
00180 }
00181 */
00182 
00189 bool Dict::RemoveEntry(TagKey const &key) 
00190 {
00191    TagKeyHT::const_iterator it = KeyHt.find(key);
00192    if ( it != KeyHt.end() ) 
00193    {
00194       it->second->Unregister(); // delete the entry
00195       KeyHt.erase(key);         // remove pointer from HTable
00196 
00197       return true;
00198    } 
00199    else 
00200    {
00201       gdcmWarningMacro( "Unfound entry" << key );
00202       return false;
00203   }
00204 }
00205 
00213 bool Dict::RemoveEntry(uint16_t group, uint16_t elem)
00214 {
00215    return RemoveEntry(DictEntry::TranslateToKey(group, elem));
00216 }
00217 
00221 void Dict::ClearEntry()
00222 {
00223    // we assume all the pointed DictEntries are already cleaned-up
00224    // when we clean KeyHt.
00225    TagKeyHT::const_iterator it;
00226 
00227    for(it = KeyHt.begin();it!=KeyHt.end();++it)
00228       it->second->Unregister(); // delete the entry
00229    KeyHt.clear();               // remove all the entries from HTable
00230 
00231 }
00232 
00238 DictEntry *Dict::GetEntry(TagKey const &key)
00239 {
00240    TagKeyHT::iterator it = KeyHt.find(key);
00241    if ( it == KeyHt.end() )
00242    {
00243       return 0;
00244    }
00245    return it->second;
00246 }
00253 DictEntry *Dict::GetEntry(uint16_t group, uint16_t elem)
00254 {
00255    TagKey key = DictEntry::TranslateToKey(group, elem);
00256    TagKeyHT::iterator it = KeyHt.find(key);
00257    if ( it == KeyHt.end() )
00258    {
00259       return 0;
00260    }
00261    return it->second;
00262 }
00263 
00268 DictEntry *Dict::GetFirstEntry()
00269 {
00270    ItKeyHt = KeyHt.begin();
00271    if ( ItKeyHt != KeyHt.end() )
00272       return ItKeyHt->second;
00273    return NULL;
00274 }
00275 
00281 DictEntry *Dict::GetNextEntry()
00282 {
00283    gdcmAssertMacro (ItKeyHt != KeyHt.end());
00284 
00285    ++ItKeyHt;
00286    if (ItKeyHt != KeyHt.end())
00287       return ItKeyHt->second;
00288    return NULL;
00289 }
00290 
00291 //-----------------------------------------------------------------------------
00292 // Protected
00293 
00294 //-----------------------------------------------------------------------------
00295 // Private
00300 void Dict::DoTheLoadingJob(std::ifstream &from)
00301 {
00302    if (!from)
00303       return;
00304       
00305    uint16_t group;
00306    uint16_t elem;
00307    VRKey vr;
00308    TagName vm;
00309    TagName name;
00310 
00311    DictEntry *newEntry;
00312    while ( true )
00313    {
00314       from >> std::hex;
00315       from >> group;      
00316       from >> elem;
00317       from >> vr;
00318       from >> vm;
00319       from >> std::ws;  //remove white space
00320       std::getline(from, name);
00321       
00322       if(from.eof()) {
00323          break;
00324       }
00325       
00326       newEntry = DictEntry::New(group, elem, vr, vm, name);
00327       AddEntry(newEntry);
00328       newEntry->Delete();
00329    }
00330    from.close();
00331 }
00332 //-----------------------------------------------------------------------------
00333 // Print
00340 void Dict::Print(std::ostream &os, std::string const & )
00341 {
00342    os << "Dict file name : [" << Filename << "]" << std::endl;
00343    std::ostringstream s;
00344 
00345    for (TagKeyHT::iterator tag = KeyHt.begin(); tag != KeyHt.end(); ++tag)
00346    {  
00347 std::cout << tag->second->GetKey() << " " << tag->second->GetName() 
00348           << std::endl;
00349       s << "Entry : ";
00350       s << "(" << tag->second->GetKey() << ") = "
00351         << std::dec;
00352       s << tag->second->GetVR() << ", ";
00353       s << tag->second->GetVM() << ", ";
00354       s << tag->second->GetName() << "."  << std::endl;
00355      
00356    }
00357    os << s.str();
00358 
00359 }
00360 
00361 //-----------------------------------------------------------------------------
00362 } // end namespace gdcm

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