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Modifications according to the review.

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[SVN r84609]
This commit is contained in:
Andrey Semashev 2013-06-02 18:15:53 +00:00
parent 71b501a0b0
commit f3bb2a493c
1 changed files with 35 additions and 18 deletions
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53
include/boost/utility/string_ref.hpp
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@ -402,6 +402,37 @@ namespace boost {
return basic_string_ref<charT, traits>(x) >= y;
}
namespace detail {
template<class charT, class traits>
inline void insert_fill_chars(std::basic_ostream<charT, traits>& os, std::size_t n) {
charT fill_chars[8];
std::fill_n(fill_chars, 8, os.fill());
for (std::size_t m = n / 8u; m > 0 && os.good(); --m)
os.write(fill_chars, 8);
n &= 7u;
if (n > 0 && os.good())
os.write(fill_chars, static_cast< std::streamsize >(n));
}
template<class charT, class traits>
void insert_aligned(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
const std::size_t size = str.size();
const std::size_t alignment_size = static_cast< std::size_t >(os.width()) - size;
const bool align_left = (os.flags() & std::ios_base::adjustfield) == std::ios_base::left;
if (!align_left) {
detail::insert_fill_chars(os, alignment_size);
if (os.good())
os.write(str.data(), static_cast< std::streamsize >(size));
}
else {
os.write(str.data(), static_cast< std::streamsize >(size));
detail::insert_fill_chars(os, alignment_size);
}
}
} // namespace detail
// Inserter
template<class charT, class traits>
inline std::basic_ostream<charT, traits>&
@ -409,25 +440,11 @@ namespace boost {
if (os.good()) {
const std::size_t size = str.size();
const std::size_t w = static_cast< std::size_t >(os.width());
os.width(0);
if (w <= size)
os.write(str.data(), size);
else {
const bool align_left = (os.flags() & std::basic_ostream<charT, traits>::adjustfield) == std::basic_ostream<charT, traits>::left;
const std::size_t alignment_size = w - size;
if (!align_left) {
const charT fill_char = os.fill();
for (std::size_t i = 0; i < alignment_size && os.good(); ++i)
os.put(fill_char);
}
if (os.good())
os.write(str.data(), size);
if (align_left && os.good()) {
const charT fill_char = os.fill();
for (std::size_t i = 0; i < alignment_size && os.good(); ++i)
os.put(fill_char);
}
}
os.write(str.data(), static_cast< std::streamsize >(size));
else
detail::insert_aligned(os, str);
os.width(0);
}
return os;
}