StreamerFileIO.cc

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#include "IOPool/Streamer/interface/StreamerFileIO.h"
#include <fstream>
#include <iostream>
#include "FWCore/Utilities/interface/Adler32Calculator.h"
#include "FWCore/Utilities/interface/Exception.h"
 
OutputFile::OutputFile(const std::string& name)
    : current_offset_(1),
      do_adler_(false),
      adlera_(1),
      adlerb_(0),
      ost_(new std::ofstream(name.c_str(), std::ios_base::binary | std::ios_base::out)),
      filename_(name) {
  if (!ost_->is_open()) {
    throw cms::Exception("OutputFile", "OutputFile") << "Error Opening Output File: " << name << "\n";
  }
  ost_->rdbuf()->pubsetbuf(nullptr, 0);
}
 
OutputFile::~OutputFile() { ost_->close(); }
 
bool OutputFile::write(const char* ptr, size_t n) {
  ost_->write(ptr, n);
  if (!ost_->fail()) {
    current_offset_ += (uint64)(n);
    if (do_adler_)
      cms::Adler32(ptr, n, adlera_, adlerb_);
    return false;
  }
  return true;
}
 
void OutputFile::close() { ost_->close(); }