ceph/src/Beast/include/beast/websocket/detail/debug.hpp

   1 //
   2 // Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
   3 //
   4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7
   8 #ifndef BEAST_WEBSOCKET_DETAIL_DEBUG_HPP
   9 #define BEAST_WEBSOCKET_DETAIL_DEBUG_HPP
  10
  11 #include <boost/asio/buffer.hpp>
  12 #include <iomanip>
  13 #include <sstream>
  14 #include <string>
  15
  16 namespace beast {
  17 namespace websocket {
  18 namespace detail {
  19
  20 template<class = void>
  21 std::string
  22 to_hex(boost::asio::const_buffer b)
  23 {
  24     using namespace boost::asio;
  25     std::stringstream ss;
  26     auto p = buffer_cast<std::uint8_t const*>(b);
  27     auto n = buffer_size(b);
  28     while(n--)
  29     {
  30         ss <<
  31             std::setfill('0') <<
  32             std::setw(2) <<
  33             std::hex << int(*p++) << " ";
  34     }
  35     return ss.str();
  36 }
  37
  38 template<class Buffers>
  39 std::string
  40 to_hex(Buffers const& bs)
  41 {
  42     std::string s;
  43     for(auto const& b : bs)
  44         s.append(to_hex(boost::asio::const_buffer(b)));
  45     return s;
  46 }
  47
  48 template<class Buffers>
  49 std::string
  50 buffers_to_string(Buffers const& bs)
  51 {
  52     using namespace boost::asio;
  53     std::string s;
  54     s.reserve(buffer_size(bs));
  55     for(auto const& b : bs)
  56         s.append(buffer_cast<char const*>(b),
  57             buffer_size(b));
  58     return s;
  59 }
  60
  61 template<class = void>
  62 std::string
  63 format(std::string s)
  64 {
  65     auto const w = 84;
  66     for(int n = w*(s.size()/w); n>0; n-=w)
  67         s.insert(n, 1, '\n');
  68     return s;
  69 }
  70
  71 } // detail
  72 } // websocket
  73 } // beast
  74
  75 #endif