Class pstreams

evaluation/TMscore.cpp:271–292

Common base class providing constants and typenames.

{
  /// Common base class providing constants and typenames.
  struct pstreams
  {
    /// Type used to specify how to connect to the process.
    typedef std::ios_base::openmode           pmode;

    /// Type used to hold the arguments for a command.
    typedef std::vector<std::string>          argv_type;

    /// Type used for file descriptors.
    typedef int                               fd_type;

    static const pmode pstdin  = std::ios_base::out; ///< Write to stdin
    static const pmode pstdout = std::ios_base::in;  ///< Read from stdout
    static const pmode pstderr = std::ios_base::app; ///< Read from stderr

    /// Create a new process group for the child process.
    static const pmode newpg   = std::ios_base::trunc;

  protected:
    enum { bufsz = 32 };  ///< Size of pstreambuf buffers.
    enum { pbsz  = 2 };   ///< Number of putback characters kept.
  };

  /// Class template for stream buffer.
  template <typename CharT, typename Traits = std::char_traits<CharT> >