Method SetParFilename

src/commandline.cpp:1441–1527

bool CommandLine::SetParFilename(std::string filename)
{
  bool result = false;

#ifndef _WIN32
  std::string::size_type where;

  if ((where = filename.find_first_of('*')) != std::string::npos ||
      (where = filename.find_first_of('?')) != std::string::npos)
  {
    std::cerr << "par2 file must not have a wildcard in it." << std::endl;
    return result;
  }
#endif

  // If we are verifying or repairing, the PAR2 file must
  // already exist
  if (operation != opCreate)
  {
    // Find the last '.' in the filename
    std::string::size_type where = filename.find_last_of('.');
    if (where != std::string::npos)
    {
      // Get what follows the last '.'
      std::string tail = filename.substr(where+1);

      if (0 == stricmp(tail.c_str(), "par2"))
      {
        parfilename = filename;
        version = verPar2;
      }
      else if (0 == stricmp(tail.c_str(), "par") ||
               (tail.size() == 3 &&
               tolower(tail[0]) == 'p' &&
               isdigit(tail[1]) &&
               isdigit(tail[2])))
      {
        parfilename = filename;
        version = verPar1;
      }

      if (DiskFile::FileExists(filename)) {
        result = true;
      }
    }

    // If we haven't figured out which version of PAR file we
    // are using from the file extension, then presumable the
    // files filename was actually the name of a data file.
    if (version == verUnknown)
    {
      // Check for the existence of a PAR2 of PAR file.
      if (DiskFile::FileExists(filename + ".par2"))
      {
        version = verPar2;
        parfilename = filename + ".par2";
        result = true;
      }