GCC Code Coverage Report


Directory: libs/url/
File: libs/url/src/detail/params_iter_impl.cpp
Date: 2023-12-15 15:31:49
Exec Total Coverage
Lines: 114 117 97.4%
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 #ifndef BOOST_URL_DETAIL_IMPL_PARAMS_ITER_IMPL_IPP
11 #define BOOST_URL_DETAIL_IMPL_PARAMS_ITER_IMPL_IPP
12
13 #include <boost/url/detail/config.hpp>
14 #include <boost/url/detail/params_iter_impl.hpp>
15 #include <boost/assert.hpp>
16
17 namespace boost {
18 namespace urls {
19 namespace detail {
20
21 /* index zero-based index of param
22 pos offset from start 0 = '?'
23 nk size of key with '?' or '&'
24 nv size of value with '='
25 dk decoded key size no '?' or '&'
26 dv decoded value size no '='
27 */
28 604 params_iter_impl::
29 params_iter_impl(
30 604 query_ref const& ref_) noexcept
31 : ref(ref_)
32 , index(0)
33 604 , pos(0)
34 {
35
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604 if(index < ref_.nparam())
36 555 setup();
37 604 }
38
39 654 params_iter_impl::
40 params_iter_impl(
41 query_ref const& ref_,
42 654 int) noexcept
43 : ref(ref_)
44 654 , index(ref_.nparam())
45 654 , pos(ref_.size())
46 {
47 654 }
48
49 133 params_iter_impl::
50 params_iter_impl(
51 query_ref const& ref_,
52 std::size_t pos_,
53 133 std::size_t index_) noexcept
54 : ref(ref_)
55 , index(index_)
56 133 , pos(pos_)
57 {
58
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133 BOOST_ASSERT(
59 pos <= ref.size());
60
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133 if(index < ref_.nparam())
61 125 setup();
62 133 }
63
64 // set up state for key/value at pos
65 void
66 2282 params_iter_impl::
67 setup() noexcept
68 {
69 2282 dk = 1;
70 2282 dv = 0;
71 2282 auto const end = ref.end();
72
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2282 BOOST_ASSERT(pos != ref.size());
73 2282 auto p0 = ref.begin() + pos;
74 2282 auto p = p0;
75 // key
76 for(;;)
77 {
78
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8906 if( p == end ||
79
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8847 *p == '&')
80 {
81 // no value
82 333 nk = 1 + p - p0;
83 333 dk = nk - dk;
84 333 nv = 0;
85 333 return;
86 }
87
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8573 if(*p == '=')
88 1949 break;
89
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6624 if(*p == '%')
90 {
91
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228 BOOST_ASSERT(
92 end - p >= 3);
93 228 dk += 2;
94 228 p += 2;
95 }
96 6624 ++p;
97 }
98 1949 nk = 1 + p - p0;
99 1949 dk = nk - dk;
100 1949 p0 = p;
101
102 // value
103 for(;;)
104 {
105 7842 ++p;
106
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7842 if( p == end ||
107
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7274 *p == '&')
108 break;
109
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5893 if(*p == '%')
110 {
111
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198 BOOST_ASSERT(
112 end - p >= 3);
113 198 dv += 2;
114 198 p += 2;
115 }
116 }
117 1949 nv = p - p0;
118 1949 dv = nv - dv - 1;
119 }
120
121 void
122 2176 params_iter_impl::
123 increment() noexcept
124 {
125
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2176 BOOST_ASSERT(
126 index < ref.nparam());
127 2176 pos += nk + nv;
128 2176 ++index;
129
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2176 if(index < ref.nparam())
130 1602 setup();
131 2176 }
132
133 void
134 1312 params_iter_impl::
135 decrement() noexcept
136 {
137
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1312 BOOST_ASSERT(index > 0);
138 1312 --index;
139 1312 dk = 1; // for '&' or '?'
140 1312 dv = 1; // for '='
141 1312 auto const begin = ref.begin();
142
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1312 BOOST_ASSERT(pos > 0);
143 1312 auto p1 = begin + (pos - 1);
144 1312 auto p = p1;
145 // find key or '='
146 for(;;)
147 {
148
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7566 if(p == begin)
149 {
150 // key
151 216 nk = 1 + p1 - p; // with '?'
152 216 dk = nk - dv;
153 216 nv = 0;
154 216 dv = 0;
155 216 pos -= nk;
156 216 return;
157 }
158
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7350 else if(*--p == '&')
159 {
160 // key
161 94 nk = p1 - p; // with '&'
162 94 dk = nk - dv;
163 94 nv = 0;
164 94 dv = 0;
165 94 pos -= nk;
166 94 return;
167 }
168
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7256 if(*p == '=')
169 {
170 // value
171 1002 nv = p1 - p; // with '='
172 1002 break;
173 }
174
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6254 if(*p == '%')
175 176 dv += 2;
176 }
177 // find key and value
178 for(;;)
179 {
180
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5238 if(p == begin)
181 {
182 // key and value
183 248 nk = 1 + p1 - p - nv; // with '?'
184 248 dk = nk - dk;
185 248 dv = nv - dv;
186 248 pos -= nk + nv;
187 248 return;
188 }
189
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4990 if(*--p == '&')
190 {
191 // key and value
192 754 nk = p1 - p - nv; // with '&'
193 754 dk = nk - dk;
194 754 dv = nv - dv;
195 754 pos -= nk + nv;
196 754 return;
197 }
198
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4236 if(*p == '=')
199 {
200 // value
201 nv = p1 - p; // with '='
202 dv += dk;
203 dk = 0;
204 }
205
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4236 else if(*p == '%')
206 {
207 60 dk += 2;
208 }
209 }
210 }
211
212 param_pct_view
213 1401 params_iter_impl::
214 dereference() const noexcept
215 {
216
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1401 BOOST_ASSERT(index < ref.nparam());
217
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1401 BOOST_ASSERT(pos < ref.size());
218 1401 auto const p = ref.begin() + pos;
219
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1401 if(nv)
220 return {
221 make_pct_string_view_unsafe(
222 1082 p, nk - 1, dk),
223 make_pct_string_view_unsafe(
224 1082 p + nk, nv - 1, dv)};
225 return {
226 make_pct_string_view_unsafe(
227 319 p, nk - 1, dk),
228 319 no_value};
229 }
230
231 pct_string_view
232 812 params_iter_impl::
233 key() const noexcept
234 {
235
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812 BOOST_ASSERT(index < ref.nparam());
236
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812 BOOST_ASSERT(pos < ref.size());
237 812 auto const p = ref.begin() + pos;
238 return make_pct_string_view_unsafe(
239 812 p, nk - 1, dk);
240 }
241
242 } // detail
243 } // url
244 } // boost
245
246 #endif
247