libs/url/src/rfc/detail/hier_part_rule.cpp

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libs/url/src/rfc/detail/hier_part_rule.cpp
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1 //
2 // Copyright (c) 2016-2019 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 // Official repository: https://github.com/boostorg/url
8 //
9
10
11 #include <boost/url/detail/config.hpp>
12 #include "hier_part_rule.hpp"
13 #include "boost/url/rfc/detail/path_rules.hpp"
14 #include <boost/url/grammar/parse.hpp>
15 #include <boost/url/grammar/parse.hpp>
16
17 namespace boost {
18 namespace urls {
19 namespace detail {
20
21 auto
22 2426 hier_part_rule_t::
23 parse(
24 char const*& it,
25 char const* const end
26 ) const noexcept ->
27 system::result<value_type>
28 {
29 2426 value_type t;
30
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2426 if(it == end)
31 {
32 // path-empty
33 44 return t;
34 }
35
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2382 if(end - it == 1)
36 {
37
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36 if(*it == '/')
38 {
39 // path-absolute
40 26 t.path = make_pct_string_view_unsafe(
41 it, 1, 1);
42 26 t.segment_count = 1;
43 26 ++it;
44 26 return t;
45 }
46 // path-rootless
47 10 auto rv = grammar::parse(
48 it, end, segment_rule);
49
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10 if(! rv)
50 return rv.error();
51 10 t.path = *rv;
52 10 t.segment_count = !t.path.empty();
53 10 return t;
54 }
55
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2346 if( it[0] == '/' &&
56
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1735 it[1] == '/')
57 {
58 // "//" authority
59 1637 it += 2;
60 auto rv = grammar::parse(
61 1637 it, end, authority_rule);
62
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1637 if(! rv)
63 30 return rv.error();
64 1607 t.authority = *rv;
65 1607 t.has_authority = true;
66 1637 }
67 // the authority requires an absolute path
68 // or an empty path
69
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2316 if(it == end || (
70
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1864 t.has_authority && (
71
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1155 *it != '/' &&
72
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150 *it != '?' &&
73
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105 *it != '#')))
74 {
75 // path-empty
76 541 return t;
77 }
78 1775 auto const it0 = it;
79 1775 std::size_t dn = 0;
80
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1775 if(*it != '/')
81 {
82 672 auto rv = grammar::parse(
83 it, end, segment_rule);
84
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672 if(! rv)
85 2 return rv.error();
86
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670 if(rv->empty())
87 79 return t;
88 591 dn += rv->decoded_size();
89 591 ++t.segment_count;
90 }
91
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4942 while(it != end)
92 {
93
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3486 if(*it == '/')
94 {
95 1914 ++dn;
96 1914 ++it;
97 1914 ++t.segment_count;
98 1914 continue;
99 }
100 1572 auto rv = grammar::parse(
101 it, end, segment_rule);
102
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1572 if(! rv)
103 4 return rv.error();
104
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1568 if(rv->empty())
105 234 break;
106 1334 dn += rv->decoded_size();
107 }
108 1690 t.path = make_pct_string_view_unsafe(
109 1690 it0, it - it0, dn);
110 1690 return t;
111 2426 }
112
113 } // detail
114 } // urls
115 } // boost
116
117