Function CheckGetLineFromStreamLongLine

Source/kwsys/testSystemTools.cxx:1018–1091

}

static bool CheckGetLineFromStreamLongLine()
{
  std::string const fileWithLongLine("longlines.txt");
  std::string firstLine, secondLine;
  // First line: large buffer, containing a carriage return for some reason.
  firstLine.assign(2050, ' ');
  firstLine += "\rfirst";
  secondLine.assign(2050, 'y');
  secondLine += "second";

  // Create file with long lines.
  {
    kwsys::ofstream out(fileWithLongLine.c_str(), std::ios::binary);
    if (!out) {
      std::cerr << "Problem opening for write: " << fileWithLongLine
                << std::endl;
      return false;
    }
    out << firstLine << "\r\n\n" << secondLine << "\n";
  }

  kwsys::ifstream file(fileWithLongLine.c_str(), std::ios::binary);
  if (!file) {
    std::cerr << "Problem opening: " << fileWithLongLine << std::endl;
    return false;
  }

  std::string line;
  bool has_newline = false;
  bool result;

  // Read first line.
  result = kwsys::SystemTools::GetLineFromStream(file, line, &has_newline,
                                                 std::string::npos);
  if (!result || line != firstLine) {
    std::cerr << "First line does not match, expected " << firstLine.size()
              << " characters, got " << line.size() << std::endl;
    return false;
  }
  if (!has_newline) {
    std::cerr << "Expected new line to be read from first line" << std::endl;
    return false;
  }

  // Read empty line.
  has_newline = false;
  result = kwsys::SystemTools::GetLineFromStream(file, line, &has_newline,
                                                 std::string::npos);
  if (!result || !line.empty()) {
    std::cerr << "Expected successful read with an empty line, got "
              << line.size() << " characters" << std::endl;
    return false;
  }
  if (!has_newline) {
    std::cerr << "Expected new line to be read for an empty line" << std::endl;
    return false;
  }