src/detail/send_file.cpp
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boost::burl::detail::send_file(boost::capy::any_buffer_sink&, std::filesystem::__cxx11::path const&, unsigned long)
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| Line | Branch | TLA | Hits | Source Code |
|---|---|---|---|---|
| 1 | // | |||
| 2 | // Copyright (c) 2026 Mohammad Nejati | |||
| 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/burl | |||
| 8 | // | |||
| 9 | ||||
| 10 | #include "send_file.hpp" | |||
| 11 | ||||
| 12 | #include "util.hpp" | |||
| 13 | ||||
| 14 | #include <boost/burl/error.hpp> | |||
| 15 | #include <boost/capy/cond.hpp> | |||
| 16 | #include <boost/capy/ex/this_coro.hpp> | |||
| 17 | #include <boost/capy/io/any_buffer_sink.hpp> | |||
| 18 | #include <boost/corosio/file_base.hpp> | |||
| 19 | #include <boost/corosio/stream_file.hpp> | |||
| 20 | ||||
| 21 | #include <system_error> | |||
| 22 | ||||
| 23 | namespace boost | |||
| 24 | { | |||
| 25 | namespace burl | |||
| 26 | { | |||
| 27 | namespace detail | |||
| 28 | { | |||
| 29 | ||||
| 30 | capy::io_task<> | |||
| 31 |
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7x | send_file( | |
| 32 | capy::any_buffer_sink& sink, | |||
| 33 | std::filesystem::path const& path, | |||
| 34 | std::uint64_t size) | |||
| 35 | { | |||
| 36 | corosio::stream_file f(co_await capy::this_coro::executor); | |||
| 37 | // TODO: switch to a non-throwing open() overload once available. | |||
| 38 | try | |||
| 39 | { | |||
| 40 | f.open(path, corosio::file_base::read_only); | |||
| 41 | } | |||
| 42 | catch(std::system_error const& e) | |||
| 43 | { | |||
| 44 | co_return { e.code() }; | |||
| 45 | } | |||
| 46 | ||||
| 47 | auto remaining = size; | |||
| 48 | while(remaining > 0) | |||
| 49 | { | |||
| 50 | capy::mutable_buffer arr[2]; | |||
| 51 | auto dst = sink.prepare(arr); | |||
| 52 | if(dst.empty()) | |||
| 53 | { | |||
| 54 | if(auto [ec] = co_await sink.commit(0); ec) | |||
| 55 | co_return { ec }; | |||
| 56 | continue; | |||
| 57 | } | |||
| 58 | ||||
| 59 | auto [rec, n] = co_await f.read_some(dst); | |||
| 60 | ||||
| 61 | auto take = clamp(remaining, n); | |||
| 62 | if(take) | |||
| 63 | { | |||
| 64 | if(auto [ec] = co_await sink.commit(take); ec) | |||
| 65 | co_return { ec }; | |||
| 66 | remaining -= take; | |||
| 67 | } | |||
| 68 | ||||
| 69 | if(remaining == 0) | |||
| 70 | break; | |||
| 71 | if(rec == capy::cond::eof) | |||
| 72 | co_return { error::file_changed }; | |||
| 73 | if(rec) | |||
| 74 | co_return { rec }; | |||
| 75 | } | |||
| 76 | ||||
| 77 | co_return {}; | |||
| 78 | 14x | } | ||
| 79 | ||||
| 80 | } // namespace detail | |||
| 81 | } // namespace burl | |||
| 82 | } // namespace boost | |||
| 83 |