/*
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Copyright 2019-2020 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License, Version 1.0.
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(http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_IO_DETAIL_BUFFER_FILL_HPP
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#define BOOST_IO_DETAIL_BUFFER_FILL_HPP
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#include <iosfwd>
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#include <cstddef>
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namespace boost {
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namespace io {
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namespace detail {
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template<class charT, class traits>
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inline bool
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buffer_fill(std::basic_streambuf<charT, traits>& buf, charT ch,
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std::size_t size)
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{
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charT fill[] = { ch, ch, ch, ch, ch, ch, ch, ch };
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enum {
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chunk = sizeof fill / sizeof(charT)
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};
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for (; size > chunk; size -= chunk) {
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if (static_cast<std::size_t>(buf.sputn(fill, chunk)) != chunk) {
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return false;
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}
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}
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return static_cast<std::size_t>(buf.sputn(fill, size)) == size;
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}
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} /* detail */
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} /* io */
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} /* boost */
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#endif
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