00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // John Allison 1st October 2012 00027 00028 // Utility moved from G4DimensionedType.hh. 00029 00030 #include "G4DimensionedType.hh" 00031 00032 namespace G4DimensionedTypeUtils 00033 { 00034 // Helper class 00035 class HasName{ 00036 public: 00037 HasName(const G4String& name): fName(name) {}; 00038 bool operator()(const G4UnitDefinition* value) const 00039 { 00040 return ((value->GetName() == fName) || (value->GetSymbol() == fName)); 00041 } 00042 private: 00043 G4String fName; 00044 }; 00045 00046 // Get unit value from input string. Return value indicates if 00047 // conversion was successful. 00048 G4bool GetUnitValue(const G4String& unit, G4double& value) 00049 { 00050 // Get units table 00051 G4UnitsTable& unitTable = G4UnitDefinition::GetUnitsTable(); 00052 if (unitTable.size() == 0) G4UnitDefinition::BuildUnitsTable(); 00053 00054 // Iterate over unit lists, searching for unit match 00055 G4UnitsTable::const_iterator iterTable = unitTable.begin(); 00056 00057 HasName myUnit(unit); 00058 G4bool gotUnit(false); 00059 00060 while (!gotUnit && (iterTable != unitTable.end())) { 00061 G4UnitsContainer unitContainer = (*iterTable)->GetUnitsList(); 00062 00063 G4UnitsContainer::const_iterator iterUnits = 00064 std::find_if(unitContainer.begin(), unitContainer.end(), myUnit); 00065 00066 if (iterUnits != unitContainer.end()) { 00067 value = (*iterUnits)->GetValue(); 00068 gotUnit = true; 00069 } 00070 00071 iterTable++; 00072 } 00073 00074 return gotUnit; 00075 } 00076 } 00077