| /* Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| file Copyright.txt or https://cmake.org/licensing for details. */ |
| #include "cmUnsetCommand.h" |
| |
| #include "cmAlgorithms.h" |
| #include "cmMakefile.h" |
| #include "cmSystemTools.h" |
| |
| class cmExecutionStatus; |
| |
| // cmUnsetCommand |
| bool cmUnsetCommand::InitialPass(std::vector<std::string> const& args, |
| cmExecutionStatus&) |
| { |
| if (args.empty() || args.size() > 2) { |
| this->SetError("called with incorrect number of arguments"); |
| return false; |
| } |
| |
| auto const& variable = args[0]; |
| |
| // unset(ENV{VAR}) |
| if (cmHasLiteralPrefix(variable, "ENV{") && variable.size() > 5) { |
| // what is the variable name |
| auto const& envVarName = variable.substr(4, variable.size() - 5); |
| |
| #ifdef CMAKE_BUILD_WITH_CMAKE |
| cmSystemTools::UnsetEnv(envVarName.c_str()); |
| #endif |
| return true; |
| } |
| // unset(VAR) |
| if (args.size() == 1) { |
| this->Makefile->RemoveDefinition(variable); |
| return true; |
| } |
| // unset(VAR CACHE) |
| if ((args.size() == 2) && (args[1] == "CACHE")) { |
| this->Makefile->RemoveCacheDefinition(variable); |
| return true; |
| } |
| // unset(VAR PARENT_SCOPE) |
| if ((args.size() == 2) && (args[1] == "PARENT_SCOPE")) { |
| this->Makefile->RaiseScope(variable, nullptr); |
| return true; |
| } |
| // ERROR: second argument isn't CACHE or PARENT_SCOPE |
| this->SetError("called with an invalid second argument"); |
| return false; |
| } |