include/boost/url/detail/path.hpp

100.0% Lines (60/60) 100.0% Functions (3/3)

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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_PATH_HPP
11		#define BOOST_URL_DETAIL_PATH_HPP
12
13		#include <boost/url/detail/config.hpp>
14		#include <boost/core/detail/string_view.hpp>
15
16		namespace boost {
17		namespace urls {
18		namespace detail {
19
20		// Return the number of characters at
21		// the front of the path that are reserved
22		inline
23		std::size_t
24	13284	path_prefix(
25		char const* p,
26		std::size_t n) noexcept
27		{
28	13284	switch(n)
29		{
30	2904	case 0:
31	2904	return 0;
32
33	1389	case 1:
34	1389	if(p[0] == '/')
35	1168	return 1;
36	221	return 0;
37
38	543	case 2:
39	543	if(p[0] == '/')
40	368	return 1;
41	175	if( p[0] == '.' &&
42	88	p[1] == '/')
43	59	return 2;
44	116	return 0;
45
46	8448	default:
47	8448	if(p[0] == '/')
48		{
49	6488	if( p[1] == '.' &&
50	562	p[2] == '/')
51	354	return 3;
52	6134	return 1;
53		}
54	1960	if( p[0] == '.' &&
55	641	p[1] == '/')
56	351	return 2;
57	1609	break;
58		}
59	1609	return 0;
60		}
61
62		// VFALCO DEPRECATED
63		inline
64		std::size_t
65	13284	path_prefix(
66		core::string_view s) noexcept
67		{
68	13284	return path_prefix(
69	13284	s.data(), s.size());
70		}
71
72		// returns the number of adjusted
73		// segments based on the malleable prefix.
74		BOOST_URL_CXX14_CONSTEXPR_OR_INLINE
75		std::size_t
76	19986	path_segments(
77		core::string_view s,
78		std::size_t nseg) noexcept
79		{
80	19986	switch(s.size())
81		{
82	3386	case 0:
83	3386	BOOST_ASSERT(nseg == 0);
84	3386	return 0;
85
86	3160	case 1:
87	3160	BOOST_ASSERT(nseg == 1);
88	3160	if(s[0] == '/')
89	1394	return 0;
90	1766	return 1;
91
92	1571	case 2:
93	1571	if(s[0] == '/')
94	159	return nseg;
95	1465	if( s[0] == '.' &&
96	53	s[1] == '/')
97		{
98	14	BOOST_ASSERT(nseg > 1);
99	14	return nseg - 1;
100		}
101	1398	return nseg;
102
103	11869	default:
104	11869	if(s[0] == '/')
105		{
106	4919	if( s[1] == '.' &&
107	67	s[2] == '/')
108		{
109	45	BOOST_ASSERT(nseg > 1);
110	45	return nseg - 1;
111		}
112	4807	return nseg;
113		}
114	7168	if( s[0] == '.' &&
115	151	s[1] == '/')
116		{
117	42	BOOST_ASSERT(nseg > 1);
118	42	return nseg - 1;
119		}
120	6975	break;
121		}
122	6975	return nseg;
123		}
124
125		// Trim reserved characters from
126		// the front of the path.
127		inline
128		core::string_view
129		clean_path(
130		core::string_view s) noexcept
131		{
132		s.remove_prefix(
133		path_prefix(s));
134		return s;
135		}
136
137		} // detail
138		} // urls
139		} // boost
140
141		#endif
142