. /include/boost/url /rfc /detail /query_part_rule.hpp
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1   // 1   //
2   // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com) 2   // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
3   // Copyright (c) 2023 Alan de Freitas (alandefreitas@gmail.com) 3   // Copyright (c) 2023 Alan de Freitas (alandefreitas@gmail.com)
4   // 4   //
5   // Distributed under the Boost Software License, Version 1.0. (See accompanying 5   // Distributed under the Boost Software License, Version 1.0. (See accompanying
6   // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6   // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7   // 7   //
8   // Official repository: https://github.com/boostorg/url 8   // Official repository: https://github.com/boostorg/url
9   // 9   //
10   10  
11   #ifndef BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP 11   #ifndef BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP
12   #define BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP 12   #define BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP
13   13  
14   #include <boost/url/detail/config.hpp> 14   #include <boost/url/detail/config.hpp>
15   #include <boost/url/error_types.hpp> 15   #include <boost/url/error_types.hpp>
16   #include <boost/url/pct_string_view.hpp> 16   #include <boost/url/pct_string_view.hpp>
17   #include <boost/url/rfc/detail/charsets.hpp> 17   #include <boost/url/rfc/detail/charsets.hpp>
18   #include <boost/url/grammar/hexdig_chars.hpp> 18   #include <boost/url/grammar/hexdig_chars.hpp>
19   #include <cstdlib> 19   #include <cstdlib>
20   20  
21   namespace boost { 21   namespace boost {
22   namespace urls { 22   namespace urls {
23   namespace detail { 23   namespace detail {
24   24  
25   /** Rule for query-part 25   /** Rule for query-part
26   26  
27   @par BNF 27   @par BNF
28   @code 28   @code
29   query-part = [ "?" query ] 29   query-part = [ "?" query ]
30   @endcode 30   @endcode
31   */ 31   */
32   struct query_part_rule_t 32   struct query_part_rule_t
33   { 33   {
34   struct value_type 34   struct value_type
35   { 35   {
36   pct_string_view query; 36   pct_string_view query;
37   std::size_t count = 0; 37   std::size_t count = 0;
38   bool has_query = false; 38   bool has_query = false;
39   }; 39   };
40   40  
41   BOOST_URL_CXX14_CONSTEXPR 41   BOOST_URL_CXX14_CONSTEXPR
42   auto 42   auto
HITCBC 43   19839 parse( 43   19843 parse(
44   char const*& it, 44   char const*& it,
45   char const* end 45   char const* end
46   ) const noexcept -> 46   ) const noexcept ->
47   system::result<value_type> 47   system::result<value_type>
48   { 48   {
HITCBC 49   19839 if( it == end || 49   19843 if( it == end ||
HITCBC 50   15391 *it != '?') 50   15395 *it != '?')
HITCBC 51   15271 return {}; 51   15271 return {};
HITCBC 52   4568 ++it; 52   4572 ++it;
HITCBC 53   4568 auto const it0 = it; 53   4572 auto const it0 = it;
HITCBC 54   4568 std::size_t dn = 0; 54   4572 std::size_t dn = 0;
HITCBC 55   4568 std::size_t nparam = 1; 55   4572 std::size_t nparam = 1;
HITCBC 56   24472 while(it != end) 56   24496 while(it != end)
57   { 57   {
HITCBC 58   21132 if(*it == '&') 58   21152 if(*it == '&')
59   { 59   {
HITCBC 60   677 ++nparam; 60   679 ++nparam;
HITCBC 61   677 ++it; 61   679 ++it;
HITCBC 62   677 continue; 62   679 continue;
63   } 63   }
HITCBC 64   20455 if(detail::query_chars(*it)) 64   20473 if(detail::query_chars(*it))
65   { 65   {
HITCBC 66   19058 ++it; 66   19076 ++it;
HITCBC 67   19058 continue; 67   19076 continue;
68   } 68   }
HITCBC 69   1397 if(*it == '%') 69   1397 if(*it == '%')
70   { 70   {
HITCBC 71   353 if(end - it < 3 || 71   353 if(end - it < 3 ||
HITCBC 72   174 (!grammar::hexdig_chars(it[1]) || 72   174 (!grammar::hexdig_chars(it[1]) ||
HITCBC 73   172 !grammar::hexdig_chars(it[2]))) 73   172 !grammar::hexdig_chars(it[2])))
HITCBC 74   10 break; 74   10 break;
HITCBC 75   169 it += 3; 75   169 it += 3;
HITCBC 76   169 dn += 2; 76   169 dn += 2;
HITCBC 77   169 continue; 77   169 continue;
78   } 78   }
HITCBC 79   1218 break; 79   1218 break;
80   } 80   }
HITCBC 81   4568 std::size_t const n(it - it0); 81   4572 std::size_t const n(it - it0);
HITCBC 82   4568 value_type t; 82   4572 value_type t;
HITCBC 83   4568 t.query = make_pct_string_view_unsafe( 83   4572 t.query = make_pct_string_view_unsafe(
84   it0, n, n - dn); 84   it0, n, n - dn);
HITCBC 85   4568 t.count = nparam; 85   4572 t.count = nparam;
HITCBC 86   4568 t.has_query = true; 86   4572 t.has_query = true;
HITCBC 87   4568 return t; 87   4572 return t;
88   } 88   }
89   }; 89   };
90   90  
91   constexpr query_part_rule_t query_part_rule{}; 91   constexpr query_part_rule_t query_part_rule{};
92   92  
93   } // detail 93   } // detail
94   } // urls 94   } // urls
95   } // boost 95   } // boost
96   96  
97   #endif 97   #endif