src/ceph/src/tools/rbd/OptionPrinter.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #ifndef CEPH_RBD_OPTION_PRINTER_H
   5 #define CEPH_RBD_OPTION_PRINTER_H
   6
   7 #include "include/int_types.h"
   8 #include <string>
   9 #include <vector>
  10 #include <boost/program_options.hpp>
  11
  12 namespace rbd {
  13
  14 class OptionPrinter {
  15 public:
  16   typedef boost::program_options::options_description OptionsDescription;
  17
  18   static const std::string POSITIONAL_ARGUMENTS;
  19   static const std::string OPTIONAL_ARGUMENTS;
  20
  21   static const size_t LINE_WIDTH = 80;
  22   static const size_t MIN_NAME_WIDTH = 20;
  23   static const size_t MAX_DESCRIPTION_OFFSET = LINE_WIDTH / 2;
  24
  25   OptionPrinter(const OptionsDescription &positional,
  26                 const OptionsDescription &optional);
  27
  28   void print_short(std::ostream &os, size_t initial_offset);
  29   void print_detailed(std::ostream &os);
  30
  31 private:
  32   const OptionsDescription &m_positional;
  33   const OptionsDescription &m_optional;
  34
  35   size_t compute_name_width(size_t indent);
  36 };
  37
  38 } // namespace rbd
  39
  40 #endif // CEPH_RBD_OPTION_PRINTER_H