icinga2/lib/cli/codegencommand.cpp
2014-11-20 21:53:32 +01:00

122 lines
4.2 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "cli/codegencommand.hpp"
#include "config/expression.hpp"
#include "config/configcompiler.hpp"
#include "config/configcompilercontext.hpp"
#include "base/logger.hpp"
using namespace icinga;
REGISTER_CLICOMMAND("codegen", CodeGenCommand);
String CodeGenCommand::GetDescription(void) const
{
return "Generates native code for an Icinga 2 config file.";
}
String CodeGenCommand::GetShortDescription(void) const
{
return "compiles an Icinga 2 config file";
}
void CodeGenCommand::InitParameters(boost::program_options::options_description& visibleDesc,
boost::program_options::options_description& hiddenDesc) const
{
}
bool CodeGenCommand::IsHidden(void) const
{
return true;
}
/**
* The entry point for the "codegen" CLI command.
*
* @returns An exit status.
*/
int CodeGenCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
{
Logger::SetConsoleLogSeverity(LogWarning);
Expression *expr = ConfigCompiler::CompileStream("<stdin>", &std::cin);
int errors = 0;
BOOST_FOREACH(const ConfigCompilerMessage& message, ConfigCompilerContext::GetInstance()->GetMessages()) {
String logmsg = String("Config ") + (message.Error ? "error" : "warning") + ": " + message.Text;
if (message.Error) {
Log(LogCritical, "config", logmsg);
errors++;
} else {
Log(LogWarning, "config", logmsg);
}
}
if (errors > 0)
return 1;
std::cout << "#include \"config/expression.hpp\"" << "\n"
<< "#include \"config/vmops.hpp\"" << "\n"
<< "#include \"base/json.hpp\"" << "\n"
<< "#include \"base/initialize.hpp\"" << "\n"
<< "#include <boost/smart_ptr/make_shared.hpp>" << "\n"
<< "\n"
<< "using namespace icinga;" << "\n"
<< "\n";
std::map<String, String> definitions;
String name = CodeGenExpression(definitions, expr);
BOOST_FOREACH(const DefinitionMap::value_type& kv, definitions) {
std::cout << "static Value " << kv.first << "(const Object::Ptr& context);" << "\n";
}
std::cout << "\n"
<< "static Dictionary::Ptr l_ModuleScope = new Dictionary();" << "\n"
<< "\n"
<< "static void RunCode(void)" << "\n"
<< "{" << "\n"
<< " " << name << "(l_ModuleScope);" << "\n"
<< "}" << "\n"
<< "\n"
<< "INITIALIZE_ONCE(RunCode);" << "\n"
<< "\n"
<< "int main(int argc, char **argv)" << "\n"
<< "{" << "\n"
<< " RunCode();" << "\n"
<< " if (l_ModuleScope->Contains(\"__result\"))" << "\n"
<< " std::cout << \"Result: \" << JsonEncode(l_ModuleScope->Get(\"__result\")) << \"\\n\";" << "\n"
<< " else" << "\n"
<< " std::cout << \"No result.\" << \"\\n\";" << "\n"
<< "}" << "\n"
<< "\n";
BOOST_FOREACH(const DefinitionMap::value_type& kv, definitions) {
std::cout << kv.second << "\n";
}
delete expr;
return 0;
}