CMSSW Reference Manual

00001 #include <algorithm>
00002 #include <iostream>
00003 #include <iterator>
00004 #include <fstream>
00005 #include <string>
00006 #include <memory>
00007 
00008 #include "FWCore/Framework/interface/EDAnalyzer.h"
00009 #include "FWCore/Framework/interface/MakerMacros.h"
00010 #include "FWCore/Framework/interface/Event.h"
00011 #include "FWCore/Framework/interface/Run.h"
00012 #include "FWCore/ParameterSet/interface/ParameterSet.h"
00013 #include "FWCore/MessageLogger/interface/MessageLogger.h"
00014 
00015 #include "SimDataFormats/GeneratorProducts/interface/LHERunInfoProduct.h"
00016 #include "SimDataFormats/GeneratorProducts/interface/LHEEventProduct.h"
00017 
00018 using namespace lhef;
00019 
00020 class LHEWriter : public edm::EDAnalyzer {
00021     public:
00022         explicit LHEWriter(const edm::ParameterSet &params);
00023         virtual ~LHEWriter();
00024 
00025     protected:
00026         virtual void beginRun(const edm::Run &run, const edm::EventSetup &es);
00027         virtual void endRun(const edm::Run &run, const edm::EventSetup &es);
00028         virtual void analyze(const edm::Event &event, const edm::EventSetup &es);
00029 
00030     private:
00031         std::ofstream   file;
00032 };
00033 
00034 LHEWriter::LHEWriter(const edm::ParameterSet &params)
00035 {
00036 }
00037 
00038 LHEWriter::~LHEWriter()
00039 {
00040 }
00041 
00042 void LHEWriter::beginRun(const edm::Run &run, const edm::EventSetup &es)
00043 {
00044         edm::Handle<LHERunInfoProduct> product;
00045         run.getByLabel("source", product);
00046 
00047         file.open("writer.lhe", std::fstream::out | std::fstream::trunc);
00048         std::copy(product->begin(), product->end(),
00049                   std::ostream_iterator<std::string>(file));
00050 }
00051 
00052 void LHEWriter::endRun(const edm::Run &run, const edm::EventSetup &es)
00053 {
00054         file << LHERunInfoProduct::endOfFile();
00055         file.close();
00056 }
00057 
00058 void LHEWriter::analyze(const edm::Event &event, const edm::EventSetup &es)
00059 {
00060         edm::Handle<LHEEventProduct> product;
00061         event.getByLabel("source", product);
00062 
00063         std::copy(product->begin(), product->end(),
00064                   std::ostream_iterator<std::string>(file));
00065 }
00066 
00067 DEFINE_ANOTHER_FWK_MODULE(LHEWriter);
LHEWriter.cc
