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3rdparty/boost_1_81_0/boost/url/impl/scheme.ipp 2.68 KB
0b6a182c   Hu Chunming   添加无鉴权注册和注销
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  //
  // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  // Official repository: https://github.com/boostorg/url
  //
  
  #ifndef BOOST_URL_IMPL_SCHEME_IPP
  #define BOOST_URL_IMPL_SCHEME_IPP
  
  #include <boost/url/scheme.hpp>
  #include <boost/url/grammar/ci_string.hpp>
  
  namespace boost {
  namespace urls {
  
  scheme
  string_to_scheme(
      string_view s) noexcept
  {
      using grammar::to_lower;
      switch(s.size())
      {
      case 0: // none
          return scheme::none;
  
      case 2: // ws
          if( to_lower(s[0]) == 'w' &&
              to_lower(s[1]) == 's')
              return scheme::ws;
          break;
  
      case 3:
          switch(to_lower(s[0]))
          {
          case 'w': // wss
              if( to_lower(s[1]) == 's' &&
                  to_lower(s[2]) == 's')
                  return scheme::wss;
              break;
  
          case 'f': // ftp
              if( to_lower(s[1]) == 't' &&
                  to_lower(s[2]) == 'p')
                  return scheme::ftp;
              break;
  
          default:
              break;
          }
          break;
  
      case 4:
          switch(to_lower(s[0]))
          {
          case 'f': // file
              if( to_lower(s[1]) == 'i' &&
                  to_lower(s[2]) == 'l' &&
                  to_lower(s[3]) == 'e')
                  return scheme::file;
              break;
  
          case 'h': // http
              if( to_lower(s[1]) == 't' &&
                  to_lower(s[2]) == 't' &&
                  to_lower(s[3]) == 'p')
                  return scheme::http;
              break;
  
          default:
              break;
          }
          break;
  
      case 5: // https
          if( to_lower(s[0]) == 'h' &&
              to_lower(s[1]) == 't' &&
              to_lower(s[2]) == 't' &&
              to_lower(s[3]) == 'p' &&
              to_lower(s[4]) == 's')
              return scheme::https;
          break;
  
      default:
          break;
      }
      return scheme::unknown;
  }
  
  string_view
  to_string(scheme s) noexcept
  {
      switch(s)
      {
      case scheme::ftp:   return "ftp";
      case scheme::file:  return "file";
      case scheme::http:  return "http";
      case scheme::https: return "https";
      case scheme::ws:    return "ws";
      case scheme::wss:   return "wss";
      case scheme::none:  return {};
      default:
          break;
      }
      return "<unknown>";
  }
  
  std::uint16_t
  default_port(scheme s) noexcept
  {
      switch(s)
      {
      case scheme::ftp:
          return 21;
      case scheme::http:
      case scheme::ws:
          return 80;
      case scheme::https:
      case scheme::wss:
          return 443;
      default:
          break;
      }
      return 0;
  }
  
  } // urls
  } // boost
  
  #endif