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Avoid multiply defined s_2_ws linker error

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+ use std::wstring directly without intermediate std::vector in `s_2_ws`

fixes #87
This commit is contained in:
Pavel P 2022-05-07 23:25:50 +03:00
parent 3f86a95c07
commit fd9dc4be35
2 changed files with 20 additions and 14 deletions
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17
include/mio/detail/mmap.ipp
View File

@ -52,14 +52,17 @@ inline DWORD int64_low(int64_t n) noexcept
return n & 0xffffffff; return n & 0xffffffff;
} }
std::wstring s_2_ws(const std::string& s) inline std::wstring s_2_ws(const std::string& s)
{ {
if (s.empty()) std::wstring ret;
return{}; if (!s.empty())
const auto s_length = static_cast<int>(s.length()); {
auto buf = std::vector<wchar_t>(s_length); ret.resize(s.size());
const auto wide_char_count = MultiByteToWideChar(CP_UTF8, 0, s.c_str(), s_length, buf.data(), s_length); int wide_char_count = MultiByteToWideChar(CP_UTF8, 0, s.c_str(),
return std::wstring(buf.data(), wide_char_count); static_cast<int>(s.size()), &ret[0], static_cast<int>(s.size()));
ret.resize(wide_char_count);
}
return ret;
} }
template< template<

17
single_include/mio/mio.hpp
View File

@ -794,14 +794,17 @@ inline DWORD int64_low(int64_t n) noexcept
return n & 0xffffffff; return n & 0xffffffff;
} }
std::wstring s_2_ws(const std::string& s) inline std::wstring s_2_ws(const std::string& s)
{ {
if (s.empty()) std::wstring ret;
return{}; if (!s.empty())
const auto s_length = static_cast<int>(s.length()); {
auto buf = std::vector<wchar_t>(s_length); ret.resize(s.size());
const auto wide_char_count = MultiByteToWideChar(CP_UTF8, 0, s.c_str(), s_length, buf.data(), s_length); int wide_char_count = MultiByteToWideChar(CP_UTF8, 0, s.c_str(),
return std::wstring(buf.data(), wide_char_count); static_cast<int>(s.size()), &ret[0], static_cast<int>(s.size()));
ret.resize(wide_char_count);
}
return ret;
} }
template< template<