GCC Code Coverage Report

Directory: libs/url/
File: libs/url/src/detail/params_iter_impl.cpp
Date: 2024-07-10 02:48:28
Exec Total Coverage
Lines: 121 124 97.6%
Functions: 8 8 100.0%
Branches: 48 60 80.0%
Line Branch Exec Source
1 //
2 // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.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 <boost/url/detail/params_iter_impl.hpp>
13 #include <boost/assert.hpp>
14
15 namespace boost {
16 namespace urls {
17 namespace detail {
18
19 /* index zero-based index of param
20 pos offset from start 0 = '?'
21 nk size of key with '?' or '&'
22 nv size of value with '='
23 dk decoded key size no '?' or '&'
24 dv decoded value size no '='
25 */
26 604 params_iter_impl::
27 params_iter_impl(
28 604 query_ref const& ref_) noexcept
29 604 : ref(ref_)
30 604 , index(0)
31 604 , pos(0)
32 {
33
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 604 if(index < ref_.nparam())
34 555 setup();
35 604 }
36
37 654 params_iter_impl::
38 params_iter_impl(
39 query_ref const& ref_,
40 654 int) noexcept
41 654 : ref(ref_)
42 654 , index(ref_.nparam())
43 654 , pos(ref_.size())
44 {
45 654 }
46
47 133 params_iter_impl::
48 params_iter_impl(
49 query_ref const& ref_,
50 std::size_t pos_,
51 133 std::size_t index_) noexcept
52 133 : ref(ref_)
53 133 , index(index_)
54 133 , pos(pos_)
55 {
56
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 133 BOOST_ASSERT(
57 pos <= ref.size());
58
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 133 if(index < ref_.nparam())
59 125 setup();
60 133 }
61
62 // set up state for key/value at pos
63 void
64 2282 params_iter_impl::
65 setup() noexcept
66 {
67 2282 dk = 1;
68 2282 dv = 0;
69 2282 auto const end = ref.end();
70
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 2282 BOOST_ASSERT(pos != ref.size());
71 2282 auto p0 = ref.begin() + pos;
72 2282 auto p = p0;
73 // key
74 for(;;)
75 {
76
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 8906 if( p == end ||
77
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 8847 *p == '&')
78 {
79 // no value
80 333 nk = 1 + p - p0;
81 333 dk = nk - dk;
82 333 nv = 0;
83 333 return;
84 }
85
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 8573 if(*p == '=')
86 1949 break;
87
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 6624 if(*p == '%')
88 {
89
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 228 BOOST_ASSERT(
90 end - p >= 3);
91 228 dk += 2;
92 228 p += 2;
93 }
94 6624 ++p;
95 }
96 1949 nk = 1 + p - p0;
97 1949 dk = nk - dk;
98 1949 p0 = p;
99
100 // value
101 for(;;)
102 {
103 7842 ++p;
104
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 7842 if( p == end ||
105
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 7274 *p == '&')
106 break;
107
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 5893 if(*p == '%')
108 {
109
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 198 BOOST_ASSERT(
110 end - p >= 3);
111 198 dv += 2;
112 198 p += 2;
113 }
114 }
115 1949 nv = p - p0;
116 1949 dv = nv - dv - 1;
117 }
118
119 void
120 2176 params_iter_impl::
121 increment() noexcept
122 {
123
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 2176 BOOST_ASSERT(
124 index < ref.nparam());
125 2176 pos += nk + nv;
126 2176 ++index;
127
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 2176 if(index < ref.nparam())
128 1602 setup();
129 2176 }
130
131 void
132 1312 params_iter_impl::
133 decrement() noexcept
134 {
135
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 1312 BOOST_ASSERT(index > 0);
136 1312 --index;
137 1312 dk = 1; // for '&' or '?'
138 1312 dv = 1; // for '='
139 1312 auto const begin = ref.begin();
140
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 1312 BOOST_ASSERT(pos > 0);
141 1312 auto p1 = begin + (pos - 1);
142 1312 auto p = p1;
143 // find key or '='
144 for(;;)
145 {
146
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 7566 if(p == begin)
147 {
148 // key
149 216 nk = 1 + p1 - p; // with '?'
150 216 dk = nk - dv;
151 216 nv = 0;
152 216 dv = 0;
153 216 pos -= nk;
154 216 return;
155 }
156
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 7350 else if(*--p == '&')
157 {
158 // key
159 94 nk = p1 - p; // with '&'
160 94 dk = nk - dv;
161 94 nv = 0;
162 94 dv = 0;
163 94 pos -= nk;
164 94 return;
165 }
166
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 7256 if(*p == '=')
167 {
168 // value
169 1002 nv = p1 - p; // with '='
170 1002 break;
171 }
172
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 6254 if(*p == '%')
173 176 dv += 2;
174 }
175 // find key and value
176 for(;;)
177 {
178
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 5238 if(p == begin)
179 {
180 // key and value
181 248 nk = 1 + p1 - p - nv; // with '?'
182 248 dk = nk - dk;
183 248 dv = nv - dv;
184 248 pos -= nk + nv;
185 248 return;
186 }
187
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 4990 if(*--p == '&')
188 {
189 // key and value
190 754 nk = p1 - p - nv; // with '&'
191 754 dk = nk - dk;
192 754 dv = nv - dv;
193 754 pos -= nk + nv;
194 754 return;
195 }
196
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 4236 if(*p == '=')
197 {
198 // value
199 ✗ nv = p1 - p; // with '='
200 ✗ dv += dk;
201 ✗ dk = 0;
202 }
203
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 4236 else if(*p == '%')
204 {
205 60 dk += 2;
206 }
207 }
208 }
209
210 param_pct_view
211 1401 params_iter_impl::
212 dereference() const noexcept
213 {
214
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 1401 BOOST_ASSERT(index < ref.nparam());
215
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 1401 BOOST_ASSERT(pos < ref.size());
216 1401 auto const p = ref.begin() + pos;
217
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 1401 if(nv)
218 return {
219 1082 make_pct_string_view_unsafe(
220 1082 p, nk - 1, dk),
221 make_pct_string_view_unsafe(
222 1082 p + nk, nv - 1, dv)};
223 return {
224 make_pct_string_view_unsafe(
225 319 p, nk - 1, dk),
226 319 no_value};
227 }
228
229 pct_string_view
230 812 params_iter_impl::
231 key() const noexcept
232 {
233
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 812 BOOST_ASSERT(index < ref.nparam());
234
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 812 BOOST_ASSERT(pos < ref.size());
235 812 auto const p = ref.begin() + pos;
236 812 return make_pct_string_view_unsafe(
237 812 p, nk - 1, dk);
238 }
239
240 } // detail
241 } // url
242 } // boost
243
244