21fc04efaf
When a property does not exist we are supposed to return an empty value. Previously if a property did not exist we just left the value of the output variable unchanged. This teaches CMake to remove the definition of the output variable in this case.
362 lines
9.5 KiB
C++
362 lines
9.5 KiB
C++
/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html 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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#include "cmGetPropertyCommand.h"
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#include "cmake.h"
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#include "cmTest.h"
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#include "cmPropertyDefinition.h"
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//----------------------------------------------------------------------------
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cmGetPropertyCommand::cmGetPropertyCommand()
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{
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this->InfoType = OutValue;
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand
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::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
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{
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if(args.size() < 3 )
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{
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this->SetError("called with incorrect number of arguments");
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return false;
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}
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// The cmake variable in which to store the result.
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this->Variable = args[0];
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// Get the scope from which to get the property.
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cmProperty::ScopeType scope;
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if(args[1] == "GLOBAL")
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{
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scope = cmProperty::GLOBAL;
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}
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else if(args[1] == "DIRECTORY")
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{
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scope = cmProperty::DIRECTORY;
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}
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else if(args[1] == "TARGET")
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{
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scope = cmProperty::TARGET;
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}
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else if(args[1] == "SOURCE")
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{
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scope = cmProperty::SOURCE_FILE;
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}
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else if(args[1] == "TEST")
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{
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scope = cmProperty::TEST;
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}
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else if(args[1] == "VARIABLE")
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{
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scope = cmProperty::VARIABLE;
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}
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else
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{
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cmOStringStream e;
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e << "given invalid scope " << args[1] << ". "
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<< "Valid scopes are "
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<< "GLOBAL, DIRECTORY, TARGET, SOURCE, TEST, VARIABLE.";
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this->SetError(e.str().c_str());
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return false;
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}
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// Parse remaining arguments.
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enum Doing { DoingNone, DoingName, DoingProperty, DoingType };
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Doing doing = DoingName;
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for(unsigned int i=2; i < args.size(); ++i)
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{
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if(args[i] == "PROPERTY")
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{
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doing = DoingProperty;
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}
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else if(args[i] == "BRIEF_DOCS")
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{
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doing = DoingNone;
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this->InfoType = OutBriefDoc;
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}
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else if(args[i] == "FULL_DOCS")
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{
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doing = DoingNone;
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this->InfoType = OutFullDoc;
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}
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else if(args[i] == "SET")
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{
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doing = DoingNone;
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this->InfoType = OutSet;
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}
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else if(args[i] == "DEFINED")
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{
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doing = DoingNone;
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this->InfoType = OutDefined;
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}
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else if(doing == DoingName)
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{
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doing = DoingNone;
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this->Name = args[i];
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}
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else if(doing == DoingProperty)
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{
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doing = DoingNone;
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this->PropertyName = args[i];
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}
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else
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{
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cmOStringStream e;
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e << "given invalid argument \"" << args[i] << "\".";
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this->SetError(e.str().c_str());
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return false;
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}
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}
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// Make sure a property name was found.
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if(this->PropertyName.empty())
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{
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this->SetError("not given a PROPERTY <name> argument.");
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return false;
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}
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// Compute requested output.
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if(this->InfoType == OutBriefDoc)
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{
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// Lookup brief documentation.
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std::string output;
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if(cmPropertyDefinition* def =
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this->Makefile->GetCMakeInstance()->
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GetPropertyDefinition(this->PropertyName.c_str(), scope))
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{
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output = def->GetShortDescription();
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}
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else
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{
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output = "NOTFOUND";
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}
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this->Makefile->AddDefinition(this->Variable.c_str(), output.c_str());
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}
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else if(this->InfoType == OutFullDoc)
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{
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// Lookup full documentation.
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std::string output;
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if(cmPropertyDefinition* def =
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this->Makefile->GetCMakeInstance()->
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GetPropertyDefinition(this->PropertyName.c_str(), scope))
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{
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output = def->GetFullDescription();
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}
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else
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{
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output = "NOTFOUND";
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}
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this->Makefile->AddDefinition(this->Variable.c_str(), output.c_str());
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}
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else if(this->InfoType == OutDefined)
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{
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// Lookup if the property is defined
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if(this->Makefile->GetCMakeInstance()->
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GetPropertyDefinition(this->PropertyName.c_str(), scope))
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{
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this->Makefile->AddDefinition(this->Variable.c_str(), "1");
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}
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else
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{
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this->Makefile->AddDefinition(this->Variable.c_str(), "0");
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}
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}
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else
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{
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// Dispatch property getting.
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switch(scope)
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{
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case cmProperty::GLOBAL: return this->HandleGlobalMode();
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case cmProperty::DIRECTORY: return this->HandleDirectoryMode();
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case cmProperty::TARGET: return this->HandleTargetMode();
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case cmProperty::SOURCE_FILE: return this->HandleSourceMode();
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case cmProperty::TEST: return this->HandleTestMode();
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case cmProperty::VARIABLE: return this->HandleVariableMode();
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case cmProperty::CACHED_VARIABLE:
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break; // should never happen
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}
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}
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand::StoreResult(const char* value)
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{
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if(this->InfoType == OutSet)
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{
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this->Makefile->AddDefinition(this->Variable.c_str(), value? "1":"0");
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}
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else // if(this->InfoType == OutValue)
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{
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if(value)
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{
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this->Makefile->AddDefinition(this->Variable.c_str(), value);
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}
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else
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{
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this->Makefile->RemoveDefinition(this->Variable.c_str());
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}
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}
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand::HandleGlobalMode()
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{
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if(!this->Name.empty())
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{
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this->SetError("given name for GLOBAL scope.");
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return false;
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}
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// Get the property.
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cmake* cm = this->Makefile->GetCMakeInstance();
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return this->StoreResult(cm->GetProperty(this->PropertyName.c_str()));
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand::HandleDirectoryMode()
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{
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// Default to the current directory.
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cmMakefile* mf = this->Makefile;
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// Lookup the directory if given.
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if(!this->Name.empty())
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{
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// Construct the directory name. Interpret relative paths with
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// respect to the current directory.
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std::string dir = this->Name;
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if(!cmSystemTools::FileIsFullPath(dir.c_str()))
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{
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dir = this->Makefile->GetCurrentDirectory();
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dir += "/";
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dir += this->Name;
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}
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// The local generators are associated with collapsed paths.
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dir = cmSystemTools::CollapseFullPath(dir.c_str());
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// Lookup the generator.
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if(cmLocalGenerator* lg =
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(this->Makefile->GetLocalGenerator()
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->GetGlobalGenerator()->FindLocalGenerator(dir.c_str())))
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{
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// Use the makefile for the directory found.
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mf = lg->GetMakefile();
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}
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else
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{
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// Could not find the directory.
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this->SetError
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("DIRECTORY scope provided but requested directory was not found. "
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"This could be because the directory argument was invalid or, "
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"it is valid but has not been processed yet.");
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return false;
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}
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}
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// Get the property.
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return this->StoreResult(mf->GetProperty(this->PropertyName.c_str()));
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand::HandleTargetMode()
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{
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if(this->Name.empty())
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{
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this->SetError("not given name for TARGET scope.");
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return false;
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}
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if(cmTarget* target = this->Makefile->FindTargetToUse(this->Name.c_str()))
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{
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return this->StoreResult(target->GetProperty(this->PropertyName.c_str()));
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}
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else
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{
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cmOStringStream e;
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e << "could not find TARGET " << this->Name
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<< ". Perhaps it has not yet been created.";
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this->SetError(e.str().c_str());
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return false;
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}
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand::HandleSourceMode()
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{
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if(this->Name.empty())
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{
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this->SetError("not given name for SOURCE scope.");
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return false;
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}
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// Get the source file.
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if(cmSourceFile* sf =
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this->Makefile->GetOrCreateSource(this->Name.c_str()))
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{
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return
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this->StoreResult(sf->GetPropertyForUser(this->PropertyName.c_str()));
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}
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else
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{
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cmOStringStream e;
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e << "given SOURCE name that could not be found or created: "
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<< this->Name;
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this->SetError(e.str().c_str());
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return false;
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}
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand::HandleTestMode()
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{
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if(this->Name.empty())
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{
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this->SetError("not given name for TEST scope.");
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return false;
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}
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// Loop over all tests looking for matching names.
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if(cmTest* test = this->Makefile->GetTest(this->Name.c_str()))
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{
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return this->StoreResult(test->GetProperty(this->PropertyName.c_str()));
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}
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// If not found it is an error.
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cmOStringStream e;
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e << "given TEST name that does not exist: " << this->Name;
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this->SetError(e.str().c_str());
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return false;
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}
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//----------------------------------------------------------------------------
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bool cmGetPropertyCommand::HandleVariableMode()
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{
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if(!this->Name.empty())
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{
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this->SetError("given name for VARIABLE scope.");
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return false;
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}
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return this->StoreResult
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(this->Makefile->GetDefinition(this->PropertyName.c_str()));
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}
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