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/algorithm/string.hpp>
  11 #include <boost/program_options.hpp>
  12
  13 namespace rbd {
  14
  15 class OptionPrinter {
  16 public:
  17   typedef boost::program_options::options_description OptionsDescription;
  18
  19   static const std::string POSITIONAL_ARGUMENTS;
  20   static const std::string OPTIONAL_ARGUMENTS;
  21
  22   static const size_t LINE_WIDTH = 80;
  23   static const size_t MIN_NAME_WIDTH = 20;
  24   static const size_t MAX_DESCRIPTION_OFFSET = 37;
  25
  26   OptionPrinter(const OptionsDescription &positional,
  27                 const OptionsDescription &optional);
  28
  29   void print_short(std::ostream &os, size_t initial_offset);
  30   void print_detailed(std::ostream &os);
  31   static void print_optional(const OptionsDescription &global_opts,
  32                              size_t &name_width, std::ostream &os);
  33
  34 private:
  35   const OptionsDescription &m_positional;
  36   const OptionsDescription &m_optional;
  37
  38   size_t compute_name_width(size_t indent);
  39 };
  40
  41 } // namespace rbd
  42
  43 #endif // CEPH_RBD_OPTION_PRINTER_H