| 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/CPPAlliance/http_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_HTTP_PROTO_IMPL_SERIALIZER_IPP | ||
| 11 | #define BOOST_HTTP_PROTO_IMPL_SERIALIZER_IPP | ||
| 12 | |||
| 13 | #include <boost/http_proto/serializer.hpp> | ||
| 14 | #include <boost/http_proto/detail/except.hpp> | ||
| 15 | #include <stddef.h> | ||
| 16 | |||
| 17 | namespace boost { | ||
| 18 | namespace http_proto { | ||
| 19 | |||
| 20 | //------------------------------------------------ | ||
| 21 | /* | ||
| 22 | |||
| 23 | write algorithm: | ||
| 24 | |||
| 25 | get buffers from serializer | ||
| 26 | - can fail with ec | ||
| 27 | - can perform blocking I/O | ||
| 28 | |||
| 29 | write buffers to socket | ||
| 30 | - consume the written amount | ||
| 31 | |||
| 32 | serializer supply algorithm | ||
| 33 | - supply a const buffer sequence for everything | ||
| 34 | serializer sr; | ||
| 35 | sr.set_body( cb ); | ||
| 36 | - supply a const buffer sequence iteratively | ||
| 37 | serializer sr; | ||
| 38 | sr.set_body_some( cb ); | ||
| 39 | - write into serializer-provided buffers iteratively | ||
| 40 | sr.set_body( source( ... ) ); | ||
| 41 | */ | ||
| 42 | //------------------------------------------------ | ||
| 43 | |||
| 44 | ✗ | serializer:: | |
| 45 | ✗ | ~serializer() | |
| 46 | { | ||
| 47 | } | ||
| 48 | |||
| 49 | ✗ | serializer:: | |
| 50 | serializer( | ||
| 51 | ✗ | std::size_t buffer_size) | |
| 52 | ✗ | : ws_(buffer_size) | |
| 53 | { | ||
| 54 | } | ||
| 55 | |||
| 56 | void | ||
| 57 | ✗ | serializer:: | |
| 58 | reset( | ||
| 59 | message_view_base const& m) noexcept | ||
| 60 | { | ||
| 61 | ✗ | ws_.clear(); | |
| 62 | ✗ | h_ = m.ph_; | |
| 63 | ✗ | src_ = nullptr; | |
| 64 | ✗ | st_ = state::init; | |
| 65 | |||
| 66 | ✗ | cb_ = nullptr; | |
| 67 | ✗ | cbn_ = 0; | |
| 68 | ✗ | cbi_ = 0; | |
| 69 | } | ||
| 70 | |||
| 71 | //------------------------------------------------ | ||
| 72 | |||
| 73 | auto | ||
| 74 | ✗ | serializer:: | |
| 75 | prepare() -> | ||
| 76 | result<buffers> | ||
| 77 | { | ||
| 78 | ✗ | if(st_ == state::init) | |
| 79 | ✗ | init_impl(); | |
| 80 | |||
| 81 | //if(! expect:100 continue) | ||
| 82 | |||
| 83 | ✗ | if(src_) | |
| 84 | { | ||
| 85 | // source body | ||
| 86 | ✗ | auto cb0 = cb_; | |
| 87 | const_buffer* p; | ||
| 88 | ✗ | if(hbuf_.size() > 0) | |
| 89 | { | ||
| 90 | ✗ | *cb0 = hbuf_; | |
| 91 | ✗ | p = cb0 + 1; | |
| 92 | } | ||
| 93 | else | ||
| 94 | { | ||
| 95 | ✗ | ++cb0; | |
| 96 | ✗ | p = cb0; | |
| 97 | } | ||
| 98 | ✗ | ++p; | |
| 99 | ✗ | auto dest = buf_.prepare(); | |
| 100 | ✗ | auto rv = src_->read( | |
| 101 | dest.first.data(), | ||
| 102 | ✗ | dest.first.size()); | |
| 103 | ✗ | if(rv.has_error()) | |
| 104 | ✗ | return rv.error(); | |
| 105 | ✗ | buf_.commit(rv->bytes); | |
| 106 | ✗ | if( rv->more && | |
| 107 | ✗ | dest.second.size() > 0) | |
| 108 | { | ||
| 109 | ✗ | rv = src_->read( | |
| 110 | dest.second.data(), | ||
| 111 | ✗ | dest.second.size()); | |
| 112 | ✗ | if(rv.has_error()) | |
| 113 | ✗ | return rv.error(); | |
| 114 | ✗ | buf_.commit(rv->bytes); | |
| 115 | } | ||
| 116 | ✗ | more_ = rv->more; | |
| 117 | ✗ | auto src = buf_.data(); | |
| 118 | ✗ | *p++ = src.first; | |
| 119 | ✗ | if(src.second.size() > 0) | |
| 120 | ✗ | *p++ = src.second; | |
| 121 | ✗ | return buffers(cb0, p - cb0); | |
| 122 | } | ||
| 123 | |||
| 124 | // buffers body | ||
| 125 | ✗ | if(hbuf_.size() > 0) | |
| 126 | { | ||
| 127 | ✗ | BOOST_ASSERT(cbi_ == 0); | |
| 128 | ✗ | cb_[0] = hbuf_; | |
| 129 | ✗ | return buffers(cb_, 1 + cbn_); | |
| 130 | } | ||
| 131 | ✗ | return buffers( | |
| 132 | ✗ | &cb_[1 + cbi_], cbn_ - cbi_); | |
| 133 | } | ||
| 134 | |||
| 135 | void | ||
| 136 | ✗ | serializer:: | |
| 137 | consume( | ||
| 138 | std::size_t n) noexcept | ||
| 139 | { | ||
| 140 | ✗ | BOOST_ASSERT( | |
| 141 | st_ == state::ok); | ||
| 142 | |||
| 143 | // header | ||
| 144 | ✗ | if(hbuf_.size() > 0) | |
| 145 | { | ||
| 146 | ✗ | if(n <= hbuf_.size()) | |
| 147 | { | ||
| 148 | ✗ | hbuf_ += n; | |
| 149 | ✗ | return; | |
| 150 | } | ||
| 151 | |||
| 152 | ✗ | n -= hbuf_.size(); | |
| 153 | ✗ | hbuf_ = {}; | |
| 154 | } | ||
| 155 | |||
| 156 | ✗ | if(src_) | |
| 157 | { | ||
| 158 | // source body | ||
| 159 | ✗ | buf_.consume(n); | |
| 160 | |||
| 161 | ✗ | if( buf_.empty() && | |
| 162 | ✗ | ! more_) | |
| 163 | { | ||
| 164 | ✗ | st_ = state::done; | |
| 165 | } | ||
| 166 | } | ||
| 167 | else | ||
| 168 | { | ||
| 169 | // buffers body | ||
| 170 | ✗ | while(n > 0) | |
| 171 | { | ||
| 172 | // n was out of range | ||
| 173 | ✗ | BOOST_ASSERT(cbi_ != cbn_); | |
| 174 | ✗ | auto i = cbi_ + 1; | |
| 175 | ✗ | if(n < cb_[i].size()) | |
| 176 | { | ||
| 177 | ✗ | cb_[i] += n; | |
| 178 | ✗ | return; | |
| 179 | } | ||
| 180 | |||
| 181 | ✗ | n -= cb_[i].size(); | |
| 182 | ✗ | ++cbi_; | |
| 183 | } | ||
| 184 | ✗ | st_ = state::done; | |
| 185 | } | ||
| 186 | } | ||
| 187 | |||
| 188 | //------------------------------------------------ | ||
| 189 | |||
| 190 | void | ||
| 191 | ✗ | serializer:: | |
| 192 | init_impl() | ||
| 193 | { | ||
| 194 | ✗ | BOOST_ASSERT(st_ == state::init); | |
| 195 | |||
| 196 | // header | ||
| 197 | ✗ | hbuf_ = { h_->buf, h_->size }; | |
| 198 | |||
| 199 | ✗ | if(src_) | |
| 200 | { | ||
| 201 | // source body | ||
| 202 | ✗ | buf_ = { ws_.data(), ws_.size() }; | |
| 203 | } | ||
| 204 | else | ||
| 205 | { | ||
| 206 | // buffers body | ||
| 207 | } | ||
| 208 | |||
| 209 | ✗ | st_ = state::ok; | |
| 210 | } | ||
| 211 | |||
| 212 | } // http_proto | ||
| 213 | } // boost | ||
| 214 | |||
| 215 | #endif | ||
| 216 |