include/boost/url/rfc/detail/query_part_rule.hpp

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1			//
2			// Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
3			// Copyright (c) 2023 Alan de Freitas (alandefreitas@gmail.com)
4			//
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)
7			//
8			// Official repository: https://github.com/boostorg/url
9			//
10
11			#ifndef BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP
12			#define BOOST_URL_RFC_DETAIL_QUERY_PART_RULE_HPP
13
14			#include "boost/url/detail/config.hpp"
15			#include "boost/url/error_types.hpp"
16			#include "boost/url/pct_string_view.hpp"
17			#include <boost/url/rfc/detail/charsets.hpp>
18			#include <boost/url/grammar/hexdig_chars.hpp>
19			#include <cstdlib>
20
21			namespace boost {
22			namespace urls {
23			namespace detail {
24
25			/** Rule for query-part
26
27			@par BNF
28			@code
29			query-part = [ "?" query ]
30			@endcode
31			*/
32			struct query_part_rule_t
33			{
34			struct value_type
35			{
36			pct_string_view query;
37			std::size_t count = 0;
38			bool has_query = false;
39			};
40
41			BOOST_URL_CXX14_CONSTEXPR
42			auto
43		3729	parse(
44			char const*& it,
45			char const* end
46			) const noexcept ->
47			system::result<value_type>
48			{
49	2/2 ✓ Branch 0 taken 724 times. ✓ Branch 1 taken 3005 times.	3729	if( it == end \|\|
50	2/2 ✓ Branch 0 taken 237 times. ✓ Branch 1 taken 487 times.	724	*it != '?')
51		3242	return {};
52		487	++it;
53		487	auto const it0 = it;
54		487	std::size_t dn = 0;
55		487	std::size_t nparam = 1;
56	2/2 ✓ Branch 0 taken 4718 times. ✓ Branch 1 taken 301 times.	5019	while(it != end)
57			{
58	2/2 ✓ Branch 0 taken 292 times. ✓ Branch 1 taken 4426 times.	4718	if(*it == '&')
59			{
60		292	++nparam;
61		292	++it;
62		292	continue;
63			}
64	2/2 ✓ Branch 1 taken 4119 times. ✓ Branch 2 taken 307 times.	4426	if(detail::query_chars(*it))
65			{
66		4119	++it;
67		4119	continue;
68			}
69	2/2 ✓ Branch 0 taken 123 times. ✓ Branch 1 taken 184 times.	307	if(*it == '%')
70			{
71	4/4 ✓ Branch 0 taken 122 times. ✓ Branch 1 taken 1 time. ✓ Branch 2 taken 2 times. ✓ Branch 3 taken 121 times.	245	if(end - it < 3 \|\|
72	2/2 ✓ Branch 1 taken 121 times. ✓ Branch 2 taken 1 time.	122	(!grammar::hexdig_chars(it[1]) \|\|
73	1/2 ✗ Branch 1 not taken. ✓ Branch 2 taken 121 times.	121	!grammar::hexdig_chars(it[2])))
74		2	break;
75		121	it += 3;
76		121	dn += 2;
77		121	continue;
78			}
79		184	break;
80			}
81		487	std::size_t const n(it - it0);
82		487	value_type t;
83		487	t.query = make_pct_string_view_unsafe(
84			it0, n, n - dn);
85		487	t.count = nparam;
86		487	t.has_query = true;
87		487	return t;
88			}
89			};
90
91			constexpr query_part_rule_t query_part_rule{};
92
93			} // detail
94			} // urls
95			} // boost
96
97			#endif
98