src/rfc/quoted_token_rule.cpp
82.8% Lines (24/0/29)
100.0% List of functions (1/0/1)
Functions (1)
| Line | TLA | Hits | Source Code |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2021 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/cppalliance/http | ||
| 8 | // | ||
| 9 | |||
| 10 | #include <boost/http/rfc/quoted_token_rule.hpp> | ||
| 11 | #include <boost/http/rfc/token_rule.hpp> | ||
| 12 | #include <boost/url/grammar/charset.hpp> | ||
| 13 | #include <boost/url/grammar/error.hpp> | ||
| 14 | #include <boost/url/grammar/lut_chars.hpp> | ||
| 15 | #include <boost/url/grammar/parse.hpp> | ||
| 16 | #include <boost/url/grammar/vchars.hpp> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace http { | ||
| 20 | |||
| 21 | namespace { | ||
| 22 | |||
| 23 | struct obs_text | ||
| 24 | { | ||
| 25 | constexpr | ||
| 26 | bool | ||
| 27 | operator()(char ch) const noexcept | ||
| 28 | { | ||
| 29 | return static_cast< | ||
| 30 | unsigned char>(ch) >= 0x80; | ||
| 31 | } | ||
| 32 | }; | ||
| 33 | |||
| 34 | struct qdtext | ||
| 35 | { | ||
| 36 | constexpr | ||
| 37 | bool | ||
| 38 | operator()(char ch) const noexcept | ||
| 39 | { | ||
| 40 | return | ||
| 41 | ch == '\t' || | ||
| 42 | ch == ' ' || | ||
| 43 | ch == 0x21 || | ||
| 44 | (ch >= 0x23 && ch <= 0x5b) || | ||
| 45 | (ch >= 0x5d && ch <= 0x7e) || | ||
| 46 | static_cast<unsigned char>(ch) >= 0x80; | ||
| 47 | } | ||
| 48 | }; | ||
| 49 | |||
| 50 | // qdtext = HTAB / SP /%x21 / %x23-5B / %x5D-7E / obs-text | ||
| 51 | constexpr grammar::lut_chars qdtext_chars(qdtext{}); | ||
| 52 | |||
| 53 | // qpchars = ( HTAB / SP / VCHAR / obs-text ) | ||
| 54 | constexpr auto qpchars = | ||
| 55 | grammar::lut_chars(grammar::vchars) + | ||
| 56 | grammar::lut_chars(obs_text{}) + '\t' + ' '; | ||
| 57 | |||
| 58 | } // namespace | ||
| 59 | |||
| 60 | |||
| 61 | namespace implementation_defined { | ||
| 62 | auto | ||
| 63 | 22x | quoted_token_rule_t:: | |
| 64 | parse( | ||
| 65 | char const*& it, | ||
| 66 | char const* end) const noexcept -> | ||
| 67 | system::result<value_type> | ||
| 68 | { | ||
| 69 | 22x | if(it == end) | |
| 70 | { | ||
| 71 | 1x | return grammar::error::need_more; | |
| 72 | } | ||
| 73 | 21x | if(*it != '\"') | |
| 74 | { | ||
| 75 | // token | ||
| 76 | 15x | auto rv = grammar::parse( | |
| 77 | it, end, token_rule); | ||
| 78 | 15x | if(rv.has_value()) | |
| 79 | 15x | return quoted_token_view(*rv); | |
| 80 | ✗ | return rv.error(); | |
| 81 | } | ||
| 82 | // quoted-string | ||
| 83 | 6x | auto const it0 = it++; | |
| 84 | 6x | std::size_t n = 0; | |
| 85 | for(;;) | ||
| 86 | { | ||
| 87 | 10x | auto it1 = it; | |
| 88 | 10x | it = grammar::find_if_not( | |
| 89 | it, end, qdtext_chars); | ||
| 90 | 10x | if(it == end) | |
| 91 | { | ||
| 92 | ✗ | return grammar::error::need_more; | |
| 93 | } | ||
| 94 | 10x | n += static_cast<std::size_t>(it - it1); | |
| 95 | 10x | if(*it == '\"') | |
| 96 | 6x | break; | |
| 97 | 4x | if(*it != '\\') | |
| 98 | { | ||
| 99 | ✗ | return grammar::error::syntax; | |
| 100 | } | ||
| 101 | 4x | ++it; | |
| 102 | 4x | if(it == end) | |
| 103 | { | ||
| 104 | ✗ | return grammar::error::need_more; | |
| 105 | } | ||
| 106 | 4x | if(! qpchars(*it)) | |
| 107 | { | ||
| 108 | ✗ | return grammar::error::syntax; | |
| 109 | } | ||
| 110 | 4x | ++it; | |
| 111 | 4x | ++n; | |
| 112 | 4x | } | |
| 113 | 12x | return value_type(core::string_view( | |
| 114 | 12x | it0, ++it - it0), n); | |
| 115 | } | ||
| 116 | |||
| 117 | } // implementation_defined | ||
| 118 | } // http | ||
| 119 | } // boost | ||
| 120 |