| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2023 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // Copyright (c) 2024 Mohammad Nejati | ||
| 4 | // | ||
| 5 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 6 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 7 | // | ||
| 8 | // Official repository: https://github.com/cppalliance/http_proto | ||
| 9 | // | ||
| 10 | |||
| 11 | #ifndef BOOST_HTTP_PROTO_DETAIL_FILTER_HPP | ||
| 12 | #define BOOST_HTTP_PROTO_DETAIL_FILTER_HPP | ||
| 13 | |||
| 14 | #include <boost/buffers/buffer_pair.hpp> | ||
| 15 | #include <boost/buffers/slice.hpp> | ||
| 16 | #include <boost/core/span.hpp> | ||
| 17 | #include <boost/system/error_code.hpp> | ||
| 18 | |||
| 19 | namespace boost { | ||
| 20 | namespace http_proto { | ||
| 21 | namespace detail { | ||
| 22 | |||
| 23 | /** Base class for all filters | ||
| 24 | */ | ||
| 25 | class filter | ||
| 26 | { | ||
| 27 | public: | ||
| 28 | /** The results of processing the filter. | ||
| 29 | */ | ||
| 30 | struct results | ||
| 31 | { | ||
| 32 | /** The error, if any occurred. | ||
| 33 | */ | ||
| 34 | system::error_code ec; | ||
| 35 | |||
| 36 | /** The number of bytes produced in the output. | ||
| 37 | |||
| 38 | This may be less than the total number | ||
| 39 | of bytes available for writing in the | ||
| 40 | destination buffers. | ||
| 41 | */ | ||
| 42 | std::size_t out_bytes = 0; | ||
| 43 | |||
| 44 | /** The number of bytes consumed from the input. | ||
| 45 | |||
| 46 | This may be less than the total number | ||
| 47 | of bytes available for reading in the | ||
| 48 | source buffers. | ||
| 49 | */ | ||
| 50 | std::size_t in_bytes = 0; | ||
| 51 | |||
| 52 | /** True if the output buffer is too | ||
| 53 | small to make progress. | ||
| 54 | |||
| 55 | This can only happen in deflate operation. | ||
| 56 | */ | ||
| 57 | bool out_short = false; | ||
| 58 | |||
| 59 | /** True if there will be no more output. | ||
| 60 | */ | ||
| 61 | bool finished = false; | ||
| 62 | }; | ||
| 63 | |||
| 64 | results | ||
| 65 | process( | ||
| 66 | buffers::slice_of< | ||
| 67 | boost::span<const buffers::mutable_buffer>> out, | ||
| 68 | buffers::const_buffer_pair in, | ||
| 69 | bool more); | ||
| 70 | |||
| 71 | protected: | ||
| 72 | virtual | ||
| 73 | std::size_t | ||
| 74 | 92 | min_out_buffer() const noexcept | |
| 75 | { | ||
| 76 | 92 | return 0; | |
| 77 | } | ||
| 78 | |||
| 79 | virtual | ||
| 80 | results | ||
| 81 | do_process( | ||
| 82 | buffers::mutable_buffer, | ||
| 83 | buffers::const_buffer, | ||
| 84 | bool) noexcept = 0; | ||
| 85 | }; | ||
| 86 | |||
| 87 | } // detail | ||
| 88 | } // http_proto | ||
| 89 | } // boost | ||
| 90 | |||
| 91 | #endif | ||
| 92 |