| Line | Branch | Exec | Source |
|---|---|---|---|
| 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_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #include <boost/http_proto/rfc/transfer_encoding_rule.hpp> | ||
| 11 | #include <boost/http_proto/rfc/token_rule.hpp> | ||
| 12 | #include <boost/http_proto/rfc/detail/rules.hpp> | ||
| 13 | #include <boost/url/grammar/ci_string.hpp> | ||
| 14 | #include <boost/url/grammar/parse.hpp> | ||
| 15 | |||
| 16 | namespace boost { | ||
| 17 | namespace http_proto { | ||
| 18 | |||
| 19 | //------------------------------------------------ | ||
| 20 | |||
| 21 | namespace detail { | ||
| 22 | |||
| 23 | /* | ||
| 24 | tparams = *tparam | ||
| 25 | tparam = OWS ";" OWS token BWS "=" BWS ( token / quoted-string ) | ||
| 26 | */ | ||
| 27 | |||
| 28 | struct tparam_rule_t | ||
| 29 | { | ||
| 30 | using value_type = | ||
| 31 | transfer_coding::param; | ||
| 32 | |||
| 33 | auto | ||
| 34 | 49 | parse( | |
| 35 | char const*& it, | ||
| 36 | char const* end) const noexcept -> | ||
| 37 | system::result<value_type> | ||
| 38 | { | ||
| 39 | 49 | value_type t; | |
| 40 | 49 | auto it0 = it; | |
| 41 | // OWS | ||
| 42 | 49 | it = grammar::find_if_not( | |
| 43 | it, end, ws); | ||
| 44 | // ";" | ||
| 45 |
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49 | if(it == end) |
| 46 | { | ||
| 47 | 15 | it = it0; | |
| 48 | 15 | BOOST_HTTP_PROTO_RETURN_EC( | |
| 49 | grammar::error::need_more); | ||
| 50 | } | ||
| 51 |
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34 | if(*it != ';') |
| 52 | { | ||
| 53 | 20 | it = it0; | |
| 54 | 20 | BOOST_HTTP_PROTO_RETURN_EC( | |
| 55 | grammar::error::mismatch); | ||
| 56 | } | ||
| 57 | 14 | ++it; | |
| 58 | // OWS | ||
| 59 | 14 | it = grammar::find_if_not( | |
| 60 | it, end, ws); | ||
| 61 | // token | ||
| 62 | { | ||
| 63 | auto rv = grammar::parse( | ||
| 64 | 14 | it, end, token_rule); | |
| 65 |
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14 | if(! rv) |
| 66 | ✗ | return rv.error(); | |
| 67 | 14 | t.key = *rv; | |
| 68 | } | ||
| 69 | // BWS | ||
| 70 | 14 | it = grammar::find_if_not( | |
| 71 | it, end, ws); | ||
| 72 | // "=" | ||
| 73 |
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14 | if(it == end) |
| 74 | { | ||
| 75 | ✗ | it = it0; | |
| 76 | ✗ | BOOST_HTTP_PROTO_RETURN_EC( | |
| 77 | grammar::error::need_more); | ||
| 78 | } | ||
| 79 |
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14 | if(*it != '=') |
| 80 | { | ||
| 81 | ✗ | it = it0; | |
| 82 | ✗ | BOOST_HTTP_PROTO_RETURN_EC( | |
| 83 | grammar::error::syntax); | ||
| 84 | } | ||
| 85 | 14 | ++it; | |
| 86 | // BWS | ||
| 87 | 14 | it = grammar::find_if_not( | |
| 88 | it, end, ws); | ||
| 89 | // quoted-token | ||
| 90 | { | ||
| 91 | auto rv = grammar::parse( | ||
| 92 | 14 | it, end, quoted_token_rule); | |
| 93 |
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14 | if(! rv) |
| 94 | ✗ | return rv.error(); | |
| 95 | 14 | t.value = *rv; | |
| 96 | } | ||
| 97 | 14 | return t; | |
| 98 | } | ||
| 99 | }; | ||
| 100 | |||
| 101 | constexpr tparam_rule_t tparam_rule{}; | ||
| 102 | |||
| 103 | } // detail | ||
| 104 | |||
| 105 | //------------------------------------------------ | ||
| 106 | |||
| 107 | auto | ||
| 108 | 177 | transfer_coding_rule_t:: | |
| 109 | parse( | ||
| 110 | char const*& it, | ||
| 111 | char const* end) const noexcept -> | ||
| 112 | system::result<value_type> | ||
| 113 | { | ||
| 114 | 354 | value_type t; | |
| 115 | { | ||
| 116 | // token | ||
| 117 | auto rv = grammar::parse( | ||
| 118 | 177 | it, end, token_rule); | |
| 119 |
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177 | if(! rv) |
| 120 | 8 | return rv.error(); | |
| 121 | 169 | t.str = *rv; | |
| 122 | |||
| 123 | // These can't have tparams | ||
| 124 |
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169 | if(grammar::ci_is_equal( |
| 125 | t.str, "chunked")) | ||
| 126 | { | ||
| 127 | 67 | t.id = transfer_coding::chunked; | |
| 128 | 67 | return t; | |
| 129 | } | ||
| 130 |
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102 | if(grammar::ci_is_equal( |
| 131 | t.str, "compress")) | ||
| 132 | { | ||
| 133 | 34 | t.id = transfer_coding::compress; | |
| 134 | 34 | return t; | |
| 135 | } | ||
| 136 |
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68 | if(grammar::ci_is_equal( |
| 137 | t.str, "deflate")) | ||
| 138 | { | ||
| 139 | 7 | t.id = transfer_coding::deflate; | |
| 140 | 7 | return t; | |
| 141 | } | ||
| 142 |
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61 | if(grammar::ci_is_equal( |
| 143 | t.str, "gzip")) | ||
| 144 | { | ||
| 145 | 26 | t.id = transfer_coding::gzip; | |
| 146 | 26 | return t; | |
| 147 | } | ||
| 148 | } | ||
| 149 | // *( OWS ";" OWS token BWS "=" BWS ( token / quoted-string ) | ||
| 150 | { | ||
| 151 | auto rv = grammar::parse(it, end, | ||
| 152 | 35 | grammar::range_rule( | |
| 153 | 35 | detail::tparam_rule)); | |
| 154 |
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35 | if(! rv) |
| 155 | ✗ | return rv.error(); | |
| 156 | 35 | t.params = std::move(*rv); | |
| 157 | } | ||
| 158 | 35 | return t; | |
| 159 | } | ||
| 160 | |||
| 161 | } // http_proto | ||
| 162 | } // boost | ||
| 163 |