Function HandleCompareCommand

Source/cmStringCommand.cxx:356–400

}

bool HandleCompareCommand(std::vector<std::string> const& args,
                          cmExecutionStatus& status)
{
  if (args.size() < 2) {
    status.SetError("sub-command COMPARE requires a mode to be specified.");
    return false;
  }
  std::string const& mode = args[1];
  if ((mode == "EQUAL") || (mode == "NOTEQUAL") || (mode == "LESS") ||
      (mode == "LESS_EQUAL") || (mode == "GREATER") ||
      (mode == "GREATER_EQUAL")) {
    if (args.size() < 5) {
      std::string e =
        cmStrCat("sub-command COMPARE, mode ", mode,
                 " needs at least 5 arguments total to command.");
      status.SetError(e);
      return false;
    }

    std::string const& left = args[2];
    std::string const& right = args[3];
    std::string const& outvar = args[4];
    bool result;
    cm::CMakeString::CompOperator op = cm::CMakeString::CompOperator::EQUAL;
    if (mode == "LESS") {
      op = cm::CMakeString::CompOperator::LESS;
    } else if (mode == "LESS_EQUAL") {
      op = cm::CMakeString::CompOperator::LESS_EQUAL;
    } else if (mode == "GREATER") {
      op = cm::CMakeString::CompOperator::GREATER;
    } else if (mode == "GREATER_EQUAL") {
      op = cm::CMakeString::CompOperator::GREATER_EQUAL;
    }
    result = cm::CMakeString{ left }.Compare(op, right);
    if (mode == "NOTEQUAL") {
      result = !result;
    }

    status.GetMakefile().AddDefinition(outvar, result ? "1" : "0");
    return true;
  }
  std::string e = "sub-command COMPARE does not recognize mode " + mode;
  status.SetError(e);
  return false;
}

bool HandleReplaceCommand(std::vector<std::string> const& args,
                          cmExecutionStatus& status)