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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkObjectFactoryBase.cxx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:43 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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Portions of this code are covered under the VTK copyright. |
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See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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*****PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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#if defined(_MSC_VER) |
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#pragma warning ( disable : 4786 ) |
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#endif |
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#include "itkObjectFactoryBase.h" |
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#include "itkDynamicLoader.h" |
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#include "itkDirectory.h" |
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#include "itkVersion.h" |
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#include <stdlib.h> |
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#include <ctype.h> |
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#include <algorithm> |
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#include <map> |
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|
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NMS |
namespace |
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{ |
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class CleanUpObjectFactory |
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{ |
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public: |
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inline void Use() |
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**{ |
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**} |
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~CleanUpObjectFactory() |
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**{ |
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itk::ObjectFactoryBase::UnRegisterAllFactories(); |
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**} |
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}; |
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static CleanUpObjectFactory CleanUpObjectFactoryGlobal; |
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} |
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EML |
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EML |
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namespace itk |
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{ |
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/** |
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* Add this for the SGI compiler which does not seem |
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* to provide a default implementation as it should. |
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*/ |
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bool operator==(const ObjectFactoryBase::OverrideInformation& rhs, |
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const ObjectFactoryBase::OverrideInformation& lhs) |
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{ |
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return (rhs.m_Description == lhs.m_Description |
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&& rhs.m_OverrideWithName == lhs.m_OverrideWithName); |
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} |
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/** |
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* Add this for the SGI compiler which does not seem |
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* to provide a default implementation as it should. |
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*/ |
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bool operator<(const ObjectFactoryBase::OverrideInformation& rhs, |
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const ObjectFactoryBase::OverrideInformation& lhs) |
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{ |
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return (rhs.m_Description < lhs.m_Description |
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&& rhs.m_OverrideWithName < lhs.m_OverrideWithName); |
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} |
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/** \class StringOverMap |
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* \brief Internal implementation class for ObjectFactorBase. |
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* |
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* Create a sub class to shrink the size of the symbols |
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* Also, so a forward reference can be put in ObjectFactoryBase.h |
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* and a pointer member can be used. This avoids other |
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* classes including <map> and getting long symbol warnings. |
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*/ |
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typedef std::multimap<std::string, ObjectFactoryBase::OverrideInformation> |
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StringOverMapType; |
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/** \class OverRideMap |
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* \brief Internal implementation class for ObjectFactorBase. |
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*/ |
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class OverRideMap : public StringOverMapType |
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{ |
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public: |
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}; |
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/** |
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* Initialize static list of factories. |
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*/ |
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std::list<ObjectFactoryBase*>* |
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ObjectFactoryBase::m_RegisteredFactories = 0; |
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/** |
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* Create an instance of a named itk object using the loaded |
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* factories |
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*/ |
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LightObject::Pointer |
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ObjectFactoryBase |
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::CreateInstance(const char* itkclassname) |
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{ |
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if ( !ObjectFactoryBase::m_RegisteredFactories ) |
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{ |
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ObjectFactoryBase::Initialize(); |
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} |
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for ( std::list<ObjectFactoryBase*>::iterator |
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i = m_RegisteredFactories->begin(); |
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********i != m_RegisteredFactories->end(); ++i ) |
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{ |
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LightObject::Pointer newobject = (*i)->CreateObject(itkclassname); |
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if(newobject) |
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{ |
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return newobject; |
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} |
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} |
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return 0; |
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} |
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std::list<LightObject::Pointer> |
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ObjectFactoryBase |
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::CreateAllInstance(const char* itkclassname) |
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{ |
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if ( !ObjectFactoryBase::m_RegisteredFactories ) |
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{ |
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ObjectFactoryBase::Initialize(); |
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} |
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std::list<LightObject::Pointer> created; |
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for ( std::list<ObjectFactoryBase*>::iterator |
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i = m_RegisteredFactories->begin(); |
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********i != m_RegisteredFactories->end(); ++i ) |
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{ |
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LightObject::Pointer newobject = (*i)->CreateObject(itkclassname); |
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if(newobject) |
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{ |
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created.push_back(newobject); |
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} |
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} |
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return created; |
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} |
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/** |
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* A one time initialization method. |
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*/ |
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void |
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ObjectFactoryBase |
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::Initialize() |
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{ |
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CleanUpObjectFactoryGlobal.Use(); |
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/** |
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* Don't do anything if we are already initialized |
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*/ |
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if ( ObjectFactoryBase::m_RegisteredFactories ) |
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{ |
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return; |
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} |
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ObjectFactoryBase::m_RegisteredFactories = |
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****new std::list<ObjectFactoryBase*>; |
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ObjectFactoryBase::RegisterDefaults(); |
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ObjectFactoryBase::LoadDynamicFactories(); |
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} |
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/** |
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* Register any factories that are always present in ITK like |
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* the OpenGL factory, currently this is not done. |
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*/ |
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void |
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ObjectFactoryBase |
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::RegisterDefaults() |
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{ |
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} |
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|
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/** |
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* Load all libraries in ITK_AUTOLOAD_PATH |
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*/ |
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void |
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ObjectFactoryBase |
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::LoadDynamicFactories() |
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{ |
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/** |
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* follow PATH conventions |
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*/ |
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#ifdef _WIN32 |
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char PathSeparator = ';'; |
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#else |
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char PathSeparator = ':'; |
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#endif |
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std::string LoadPath; |
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if (getenv("ITK_AUTOLOAD_PATH")) |
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{ |
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LoadPath = getenv("ITK_AUTOLOAD_PATH"); |
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} |
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else |
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{ |
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return; |
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} |
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if(LoadPath.size() == 0) |
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{ |
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return; |
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} |
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std::string::size_type EndSeparatorPosition = 0; |
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std::string::size_type StartSeparatorPosition = 0; |
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while ( StartSeparatorPosition != std::string::npos ) |
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{ |
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StartSeparatorPosition = EndSeparatorPosition; |
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/** |
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* find PathSeparator in LoadPath |
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*/ |
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EndSeparatorPosition = LoadPath.find(PathSeparator, |
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StartSeparatorPosition); |
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if(EndSeparatorPosition == std::string::npos) |
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{ |
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EndSeparatorPosition = LoadPath.size(); |
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} |
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std::string CurrentPath = |
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******LoadPath.substr(StartSeparatorPosition, EndSeparatorPosition); |
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ObjectFactoryBase::LoadLibrariesInPath(CurrentPath.c_str()); |
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/** |
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* move past separator |
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*/ |
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if(EndSeparatorPosition == LoadPath.size()) |
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{ |
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StartSeparatorPosition = std::string::npos; |
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} |
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else |
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{ |
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EndSeparatorPosition++; |
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} |
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} |
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} |
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/** |
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* A file scope helper function to concat path and file into |
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* a full path |
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*/ |
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static std::string |
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CreateFullPath(const char* path, const char* file) |
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{ |
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std::string ret; |
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#ifdef _WIN32 |
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const char sep = '\\'; |
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#else |
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const char sep = '/'; |
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#endif |
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/** |
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* make sure the end of path is a separator |
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*/ |
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ret = path; |
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if ( ret[ret.size()-1] != sep ) |
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{ |
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ret += sep; |
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} |
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ret += file; |
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return ret; |
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} |
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/** |
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* A file scope typedef to make the cast code to the load |
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* function cleaner to read. |
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*/ |
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typedef ObjectFactoryBase* (* ITK_LOAD_FUNCTION)(); |
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/** |
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* A file scoped function to determine if a file has |
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* the shared library extension in its name, this converts name to lower |
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* case before the compare, DynamicLoader always uses |
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* lower case for LibExtension values. |
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*/ |
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inline bool |
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NameIsSharedLibrary(const char* name) |
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{ |
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std::string sname = name; |
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if ( sname.find(DynamicLoader::LibExtension()) != std::string::npos ) |
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{ |
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return true; |
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} |
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return false; |
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} |
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/** |
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* |
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*/ |
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void |
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ObjectFactoryBase |
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::LoadLibrariesInPath(const char* path) |
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{ |
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Directory::Pointer dir = Directory::New(); |
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if ( !dir->Load(path) ) |
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{ |
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return; |
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} |
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|
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/** |
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* Attempt to load each file in the directory as a shared library |
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*/ |
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for ( unsigned int i = 0; i < dir->GetNumberOfFiles(); i++ ) |
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{ |
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const char* file = dir->GetFile(i); |
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/** |
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* try to make sure the file has at least the extension |
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* for a shared library in it. |
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*/ |
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if ( NameIsSharedLibrary(file) ) |
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{ |
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std::string fullpath = CreateFullPath(path, file); |
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LibHandle lib = DynamicLoader::OpenLibrary(fullpath.c_str()); |
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if ( lib ) |
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{ |
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/** |
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* Look for the symbol itkLoad in the library |
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*/ |
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ITK_LOAD_FUNCTION loadfunction |
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**********= (ITK_LOAD_FUNCTION)DynamicLoader::GetSymbolAddress(lib, "itkLoad"); |
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/** |
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* if the symbol is found call it to create the factory |
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* from the library |
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*/ |
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if ( loadfunction ) |
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{ |
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ObjectFactoryBase* newfactory = (*loadfunction)(); |
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/** |
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* initialize class members if load worked |
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*/ |
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newfactory->m_LibraryHandle = (void*)lib; |
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newfactory->m_LibraryPath = fullpath; |
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newfactory->m_LibraryDate = 0; // unused for now... |
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ObjectFactoryBase::RegisterFactory(newfactory); |
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} |
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} |
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} |
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} |
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} |
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|
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/** |
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* Recheck the ITK_AUTOLOAD_PATH for new libraries |
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*/ |
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void |
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ObjectFactoryBase |
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::ReHash() |
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{ |
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ObjectFactoryBase::UnRegisterAllFactories(); |
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ObjectFactoryBase::Initialize(); |
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} |
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|
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|
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/** |
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* initialize class members |
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*/ |
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ObjectFactoryBase::ObjectFactoryBase() |
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{ |
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m_LibraryHandle = 0; |
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m_LibraryDate = 0; |
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m_OverrideMap = new OverRideMap; |
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} |
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|
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|
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/** |
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* Unload the library and free the path string |
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*/ |
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ObjectFactoryBase |
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::~ObjectFactoryBase() |
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{ |
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if(m_LibraryHandle) |
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{ |
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DynamicLoader::CloseLibrary((LibHandle)m_LibraryHandle); |
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} |
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m_OverrideMap->erase(m_OverrideMap->begin(), m_OverrideMap->end()); |
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delete m_OverrideMap; |
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} |
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|
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|
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/** |
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* Add a factory to the registered list |
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*/ |
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void |
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|
ObjectFactoryBase |
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::RegisterFactory(ObjectFactoryBase* factory) |
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{ |
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if ( factory->m_LibraryHandle == 0 ) |
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{ |
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const char* nonDynamicName = "Non-Dynamicly loaded factory"; |
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factory->m_LibraryPath = nonDynamicName; |
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} |
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|
if ( strcmp(factory->GetITKSourceVersion(), |
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IND |
**************Version::GetITKSourceVersion()) != 0 ) |
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|
{ |
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|
itkGenericOutputMacro(<< "Possible incompatible factory load:" |
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LEN |
<< "\nRunning itk version :\n" << Version::GetITKSourceVersion() |
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LEN |
<< "\nLoaded factory version:\n" << factory->GetITKSourceVersion() |
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LEN,IND |
**************************<< "\nLoading factory:\n" << factory->m_LibraryPath << "\n"); |
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|
} |
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|
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ObjectFactoryBase::Initialize(); |
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ObjectFactoryBase::m_RegisteredFactories->push_back(factory); |
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factory->Register(); |
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} |
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|
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|
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|
/** |
| 422 |
|
* |
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|
*/ |
| 424 |
|
void |
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ObjectFactoryBase |
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::PrintSelf(std::ostream& os, Indent indent) const |
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{ |
| 428 |
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Superclass::PrintSelf(os, indent); |
| 429 |
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|
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|
os << indent << "Factory DLL path: " << m_LibraryPath.c_str() << "\n"; |
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LEN |
os << indent << "Factory description: " << this->GetDescription() << std::endl; |
| 432 |
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|
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int num = static_cast<int>( m_OverrideMap->size() ); |
| 434 |
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os << indent << "Factory overides " << num << " classes:" << std::endl; |
| 435 |
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|
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|
indent = indent.GetNextIndent(); |
| 437 |
|
for(OverRideMap::iterator i = m_OverrideMap->begin(); |
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IND |
******i != m_OverrideMap->end(); ++i) |
| 439 |
|
{ |
| 440 |
|
os << indent << "Class : " << (*i).first.c_str() << "\n"; |
| 441 |
LEN |
os << indent << "Overriden with: " << (*i).second.m_OverrideWithName.c_str() |
| 442 |
|
<< std::endl; |
| 443 |
|
os << indent << "Enable flag: " << (*i).second.m_EnabledFlag |
| 444 |
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<< std::endl; |
| 445 |
|
os << std::endl; |
| 446 |
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} |
| 447 |
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} |
| 448 |
|
|
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|
|
| 450 |
|
/** |
| 451 |
|
* |
| 452 |
|
*/ |
| 453 |
|
void |
| 454 |
|
ObjectFactoryBase |
| 455 |
|
::UnRegisterFactory(ObjectFactoryBase* factory) |
| 456 |
|
{ |
| 457 |
|
for ( std::list<ObjectFactoryBase*>::iterator i = |
| 458 |
|
m_RegisteredFactories->begin(); |
| 459 |
IND |
********i != m_RegisteredFactories->end(); ++i ) |
| 460 |
|
{ |
| 461 |
|
if ( factory == *i ) |
| 462 |
|
{ |
| 463 |
|
m_RegisteredFactories->remove(factory); |
| 464 |
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factory->UnRegister(); |
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|
return; |
| 466 |
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} |
| 467 |
|
} |
| 468 |
|
} |
| 469 |
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|
| 470 |
|
|
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|
/** |
| 472 |
|
* unregister all factories and delete the RegisteredFactories list |
| 473 |
|
*/ |
| 474 |
|
void |
| 475 |
|
ObjectFactoryBase |
| 476 |
|
::UnRegisterAllFactories() |
| 477 |
|
{ |
| 478 |
|
|
| 479 |
|
if ( ObjectFactoryBase::m_RegisteredFactories ) |
| 480 |
|
{ |
| 481 |
|
for ( std::list<ObjectFactoryBase*>::iterator i |
| 482 |
|
= m_RegisteredFactories->begin(); |
| 483 |
IND |
**********i != m_RegisteredFactories->end(); ++i ) |
| 484 |
|
{ |
| 485 |
|
(*i)->UnRegister(); |
| 486 |
|
} |
| 487 |
|
delete ObjectFactoryBase::m_RegisteredFactories; |
| 488 |
|
ObjectFactoryBase::m_RegisteredFactories = 0; |
| 489 |
|
} |
| 490 |
|
} |
| 491 |
|
|
| 492 |
|
|
| 493 |
|
/** |
| 494 |
|
* |
| 495 |
|
*/ |
| 496 |
|
void |
| 497 |
|
ObjectFactoryBase |
| 498 |
|
::RegisterOverride(const char* classOverride, |
| 499 |
|
const char* subclass, |
| 500 |
|
const char* description, |
| 501 |
|
bool enableFlag, |
| 502 |
|
CreateObjectFunctionBase* |
| 503 |
|
createFunction) |
| 504 |
|
{ |
| 505 |
|
ObjectFactoryBase::OverrideInformation info; |
| 506 |
|
info.m_Description = description; |
| 507 |
|
info.m_OverrideWithName = subclass; |
| 508 |
|
info.m_EnabledFlag = enableFlag; |
| 509 |
|
info.m_CreateObject = createFunction; |
| 510 |
|
m_OverrideMap->insert(OverRideMap::value_type(classOverride, info)); |
| 511 |
|
} |
| 512 |
|
|
| 513 |
|
|
| 514 |
|
LightObject::Pointer |
| 515 |
|
ObjectFactoryBase |
| 516 |
|
::CreateObject(const char* itkclassname) |
| 517 |
|
{ |
| 518 |
|
m_OverrideMap->find(itkclassname); |
| 519 |
|
OverRideMap::iterator pos = m_OverrideMap->find(itkclassname); |
| 520 |
|
if ( pos != m_OverrideMap->end() ) |
| 521 |
|
{ |
| 522 |
|
return (*pos).second.m_CreateObject->CreateObject(); |
| 523 |
|
} |
| 524 |
|
return 0; |
| 525 |
|
} |
| 526 |
|
|
| 527 |
|
|
| 528 |
|
/** |
| 529 |
|
* |
| 530 |
|
*/ |
| 531 |
|
void |
| 532 |
|
ObjectFactoryBase |
| 533 |
|
::SetEnableFlag(bool flag, |
| 534 |
|
const char* className, |
| 535 |
|
const char* subclassName) |
| 536 |
|
{ |
| 537 |
|
OverRideMap::iterator start = m_OverrideMap->lower_bound(className); |
| 538 |
|
OverRideMap::iterator end = m_OverrideMap->upper_bound(className); |
| 539 |
|
for ( OverRideMap::iterator i = start; i != end; ++i ) |
| 540 |
|
{ |
| 541 |
|
if ( (*i).second.m_OverrideWithName == subclassName ) |
| 542 |
|
{ |
| 543 |
|
(*i).second.m_EnabledFlag = flag; |
| 544 |
|
} |
| 545 |
|
} |
| 546 |
|
} |
| 547 |
|
|
| 548 |
|
|
| 549 |
|
/** |
| 550 |
|
* |
| 551 |
|
*/ |
| 552 |
|
bool |
| 553 |
|
ObjectFactoryBase |
| 554 |
|
::GetEnableFlag(const char* className, const char* subclassName) |
| 555 |
|
{ |
| 556 |
|
OverRideMap::iterator start = m_OverrideMap->lower_bound(className); |
| 557 |
|
OverRideMap::iterator end = m_OverrideMap->upper_bound(className); |
| 558 |
|
for ( OverRideMap::iterator i = start; i != end; ++i ) |
| 559 |
|
{ |
| 560 |
|
if ( (*i).second.m_OverrideWithName == subclassName ) |
| 561 |
|
{ |
| 562 |
|
return (*i).second.m_EnabledFlag; |
| 563 |
|
} |
| 564 |
|
} |
| 565 |
|
return 0; |
| 566 |
|
} |
| 567 |
|
|
| 568 |
|
|
| 569 |
|
/** |
| 570 |
|
* |
| 571 |
|
*/ |
| 572 |
|
void |
| 573 |
|
ObjectFactoryBase |
| 574 |
|
::Disable(const char* className) |
| 575 |
|
{ |
| 576 |
|
OverRideMap::iterator start = m_OverrideMap->lower_bound(className); |
| 577 |
|
OverRideMap::iterator end = m_OverrideMap->upper_bound(className); |
| 578 |
|
for ( OverRideMap::iterator i = start; i != end; ++i ) |
| 579 |
|
{ |
| 580 |
|
(*i).second.m_EnabledFlag = 0; |
| 581 |
|
} |
| 582 |
|
} |
| 583 |
|
|
| 584 |
|
|
| 585 |
|
/** |
| 586 |
|
* |
| 587 |
|
*/ |
| 588 |
|
std::list<ObjectFactoryBase*> |
| 589 |
|
ObjectFactoryBase |
| 590 |
|
::GetRegisteredFactories() |
| 591 |
|
{ |
| 592 |
|
return *ObjectFactoryBase::m_RegisteredFactories; |
| 593 |
|
} |
| 594 |
|
|
| 595 |
|
|
| 596 |
|
/** |
| 597 |
|
* Return a list of classes that this factory overrides. |
| 598 |
|
*/ |
| 599 |
|
std::list<std::string> |
| 600 |
|
ObjectFactoryBase |
| 601 |
|
::GetClassOverrideNames() |
| 602 |
|
{ |
| 603 |
|
std::list<std::string> ret; |
| 604 |
|
for ( OverRideMap::iterator i = m_OverrideMap->begin(); |
| 605 |
IND |
********i != m_OverrideMap->end(); ++i ) |
| 606 |
|
{ |
| 607 |
|
ret.push_back((*i).first); |
| 608 |
|
} |
| 609 |
|
return ret; |
| 610 |
|
} |
| 611 |
|
|
| 612 |
|
|
| 613 |
|
/** |
| 614 |
|
* Return a list of the names of classes that override classes. |
| 615 |
|
*/ |
| 616 |
|
std::list<std::string> |
| 617 |
|
ObjectFactoryBase |
| 618 |
|
::GetClassOverrideWithNames() |
| 619 |
|
{ |
| 620 |
|
std::list<std::string> ret; |
| 621 |
|
for ( OverRideMap::iterator i = m_OverrideMap->begin(); |
| 622 |
IND |
********i != m_OverrideMap->end(); ++i ) |
| 623 |
|
{ |
| 624 |
|
ret.push_back((*i).second.m_OverrideWithName); |
| 625 |
|
} |
| 626 |
|
return ret; |
| 627 |
|
} |
| 628 |
|
|
| 629 |
|
|
| 630 |
|
/** |
| 631 |
|
* Retrun a list of descriptions for class overrides |
| 632 |
|
*/ |
| 633 |
|
std::list<std::string> |
| 634 |
|
ObjectFactoryBase |
| 635 |
|
::GetClassOverrideDescriptions() |
| 636 |
|
{ |
| 637 |
|
std::list<std::string> ret; |
| 638 |
|
for ( OverRideMap::iterator i = m_OverrideMap->begin(); |
| 639 |
IND |
********i != m_OverrideMap->end(); ++i ) |
| 640 |
|
{ |
| 641 |
|
ret.push_back((*i).second.m_Description); |
| 642 |
|
} |
| 643 |
|
return ret; |
| 644 |
|
} |
| 645 |
|
|
| 646 |
|
|
| 647 |
|
/** |
| 648 |
|
* Return a list of enable flags |
| 649 |
|
*/ |
| 650 |
|
std::list<bool> |
| 651 |
|
ObjectFactoryBase |
| 652 |
|
::GetEnableFlags() |
| 653 |
|
{ |
| 654 |
|
std::list<bool> ret; |
| 655 |
|
for( OverRideMap::iterator i = m_OverrideMap->begin(); |
| 656 |
IND |
*******i != m_OverrideMap->end(); ++i) |
| 657 |
|
{ |
| 658 |
|
ret.push_back((*i).second.m_EnabledFlag); |
| 659 |
|
} |
| 660 |
|
return ret; |
| 661 |
|
} |
| 662 |
|
|
| 663 |
|
/** |
| 664 |
|
* Return the path to a dynamically loaded factory. */ |
| 665 |
|
const char * |
| 666 |
|
ObjectFactoryBase |
| 667 |
|
::GetLibraryPath() |
| 668 |
|
{ |
| 669 |
|
return m_LibraryPath.c_str(); |
| 670 |
|
} |
| 671 |
|
|
| 672 |
|
} // end namespace itk |
| 673 |
|
|