CondCore/CondDB/src/FileUtils.cc - master - githubmirror/cmssw

CondCore/CondDB/src/FileUtils.cc

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29 май 2019, 08:23

29 май 2019, 08:23087900c

#include "CondCore/CondDB/interface/FileUtils.h"
#include "CondCore/CondDB/interface/Exception.h"
#include <fstream>
#include <sstream>

bool cond::FileReader::read(const std::string& fileName) {
  std::ifstream inputFile;
  inputFile.open(fileName.c_str());
  if (!inputFile.good()) {
    std::stringstream msg;
    msg << "File \"" << fileName << "\" cannot be open.";
    inputFile.close();
    throw cond::Exception(msg.str());
  }
  // get pointer to associated buffer object
  std::filebuf* pbuf = inputFile.rdbuf();
  // get file size using buffer's members
  long size = pbuf->pubseekoff(0, std::ios::end, std::ios::in);
  pbuf->pubseekpos(0, std::ios::in);
  // allocate memory to contain file data
  char* buffer = new char[size + 1];
  // get file data
  pbuf->sgetn(buffer, size);
  inputFile.close();
  buffer[size] = 0;
  m_content += buffer;
  delete[] buffer;
  return true;
}