63e88f80
 Hu Chunming
提交三方库
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/*
Copyright 2019 Glen Joseph Fernandes
(glenjofe@gmail.com)
Distributed under the Boost Software License, Version 1.0.
(http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef BOOST_IO_OSTREAM_PUT_HPP
#define BOOST_IO_OSTREAM_PUT_HPP
#include <boost/io/detail/buffer_fill.hpp>
#include <boost/io/detail/ostream_guard.hpp>
namespace boost {
namespace io {
template<class charT, class traits>
inline std::basic_ostream<charT, traits>&
ostream_put(std::basic_ostream<charT, traits>& os, const charT* data,
std::size_t size)
{
typedef std::basic_ostream<charT, traits> stream;
detail::ostream_guard<charT, traits> guard(os);
typename stream::sentry entry(os);
if (entry) {
std::basic_streambuf<charT, traits>& buf = *os.rdbuf();
std::size_t width = static_cast<std::size_t>(os.width());
if (width <= size) {
if (static_cast<std::size_t>(buf.sputn(data, size)) != size) {
return os;
}
} else if ((os.flags() & stream::adjustfield) == stream::left) {
if (static_cast<std::size_t>(buf.sputn(data, size)) != size ||
!detail::buffer_fill(buf, os.fill(), width - size)) {
return os;
}
} else if (!detail::buffer_fill(buf, os.fill(), width - size) ||
static_cast<std::size_t>(buf.sputn(data, size)) != size) {
return os;
}
os.width(0);
}
guard.release();
return os;
}
} /* io */
} /* boost */
#endif
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