Method createDataOutStream

src/common/FileManager.cpp:130–200

std::ostream* FileManager::createDataOutStream(const std::string& filename,
                                               bool binary, bool truncate) const {
  // choose open mode
  std::ios::openmode mode = std::ios::out;
  if (binary)   { mode |= std::ios::binary; }
  if (truncate) { mode |= std::ios::trunc;  }

  const bool relative = !isAbsolute(filename);
  if (relative) {
    // try directory stored in DB
    if (BZDB.isSet("directory")) {
      const std::string path = catPath(BZDB.get("directory"), filename);
      std::ofstream* stream = new std::ofstream(path.c_str(), mode);
      if (stream && *stream) {
        return stream;
      }
      delete stream;
    }

    // try data directory
    {
      const std::string path = catPath("data", filename);
      std::ofstream* stream = new std::ofstream(path.c_str(), mode);
      if (stream && *stream) {
        return stream;
      }
      delete stream;
    }
  }
  else {
    // try absolute path
    int successMkdir = 0;
    int i = 0;
#ifndef _WIN32
    // create all directories above the file
    while ((i = filename.find('/', i + 1)) != -1) {
      const std::string subDir = filename.substr(0, i);
      if (!isDirectory(subDir)) {
        successMkdir = mkdir(subDir.c_str(), 0755);
        if (successMkdir != 0) {
          perror("Unable to make directory");
          return NULL;
        }
      }
    }
#else
    // create all directories above the file
    i = 2; // don't stat on a drive, it will fail
    while ((i = filename.find('\\', i + 1)) != -1) {
      const std::string subDir = filename.substr(0, i);
      if (!isDirectory(subDir)) {
        successMkdir = _mkdir(subDir.c_str());
        /*if (successMkdir != 0)
        {
          perror("Unable to make directory");
          return NULL;
        } */
      }