CMake/Source/cmVariableRequiresCommand.h

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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
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Copyright (c) 2002 Insight Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
#ifndef cmVariableRequiresCommand_h
#define cmVariableRequiresCommand_h
#include "cmStandardIncludes.h"
#include "cmCommand.h"
/** \class cmVariableRequiresCommand
* \brief Displays a message to the user
*
*/
class cmVariableRequiresCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmVariableRequiresCommand;
}
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InitialPass(std::vector<std::string> const& args);
///!
virtual void FinalPass();
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/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() { return "VARIABLE_REQUIRES";}
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/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation()
{
return "Display an error message .";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation()
{
return
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"VARIABLE_REQUIRES(TEST_VARIABLE RESULT_VARIABLE "
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"REQUIRED_VARIABLE1 REQUIRED_VARIABLE2 ...) "
"The first argument (TEST_VARIABLE) is the name of the varible to be "
"tested, if that varible is false nothing else is done. If "
"TEST_VARIABLE is true, then "
"the next arguemnt (RESULT_VARIABLE) is a vairable that is set to true "
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"if all the "
"required variables are set."
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"The rest of the arguments are varibles that must be true or not "
"set to NOTFOUND to avoid an error. ";
}
cmTypeMacro(cmVariableRequiresCommand, cmCommand);
private:
std::string m_ErrorMessage;
std::vector<std::string> m_Arguments;
bool m_RequirementsMet;
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};
#endif