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