| 1 | /* |
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| 2 | Copyright 2019-2020 Glen Joseph Fernandes |
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| 3 | (glenjofe@gmail.com) |
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| 4 | |
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| 5 | Distributed under the Boost Software License, Version 1.0. |
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| 6 | (http://www.boost.org/LICENSE_1_0.txt) |
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| 7 | */ |
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| 8 | #ifndef BOOST_IO_DETAIL_BUFFER_FILL_HPP |
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| 9 | #define BOOST_IO_DETAIL_BUFFER_FILL_HPP |
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| 10 | |
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| 11 | #include <iosfwd> |
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| 12 | #include <cstddef> |
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| 13 | |
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| 14 | namespace boost { |
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| 15 | namespace io { |
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| 16 | namespace detail { |
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| 17 | |
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| 18 | template<class charT, class traits> |
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| 19 | inline bool |
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| 20 | buffer_fill(std::basic_streambuf<charT, traits>& buf, charT ch, |
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| 21 | std::size_t size) |
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| 22 | { |
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| 23 | charT fill[] = { ch, ch, ch, ch, ch, ch, ch, ch }; |
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| 24 | enum { |
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| 25 | chunk = sizeof fill / sizeof(charT) |
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| 26 | }; |
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| 27 | for (; size > chunk; size -= chunk) { |
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| 28 | if (static_cast<std::size_t>(buf.sputn(fill, chunk)) != chunk) { |
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| 29 | return false; |
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| 30 | } |
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| 31 | } |
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| 32 | return static_cast<std::size_t>(buf.sputn(fill, size)) == size; |
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| 33 | } |
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| 34 | |
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| 35 | } /* detail */ |
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| 36 | } /* io */ |
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| 37 | } /* boost */ |
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| 38 | |
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| 39 | #endif |
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| 40 | |
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