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Use overridden locale in ostream

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Daniel Laügt
2019-11-13 13:08:47 +01:00
committed by Victor Zverovich
parent ceff9b0b2e
commit c58b7d9c2f
2 changed files with 6 additions and 2 deletions
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2
include/fmt/core.h
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@ -1076,6 +1076,8 @@ class locale_ref {
locale_ref() : locale_(nullptr) {} locale_ref() : locale_(nullptr) {}
template <typename Locale> explicit locale_ref(const Locale& loc); template <typename Locale> explicit locale_ref(const Locale& loc);
explicit operator bool() const FMT_NOEXCEPT { return locale_ != nullptr; }
template <typename Locale> Locale get() const; template <typename Locale> Locale get() const;
}; };

6
include/fmt/ostream.h
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@ -89,9 +89,11 @@ void write(std::basic_ostream<Char>& os, buffer<Char>& buf) {
} }
template <typename Char, typename T> template <typename Char, typename T>
void format_value(buffer<Char>& buf, const T& value) { void format_value(buffer<Char>& buf, const T& value,
locale_ref loc = locale_ref()) {
formatbuf<Char> format_buf(buf); formatbuf<Char> format_buf(buf);
std::basic_ostream<Char> output(&format_buf); std::basic_ostream<Char> output(&format_buf);
if (loc) output.imbue(loc.get<std::locale>());
output.exceptions(std::ios_base::failbit | std::ios_base::badbit); output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
output << value; output << value;
buf.resize(buf.size()); buf.resize(buf.size());
@ -104,7 +106,7 @@ struct fallback_formatter<T, Char, enable_if_t<is_streamable<T, Char>::value>>
template <typename Context> template <typename Context>
auto format(const T& value, Context& ctx) -> decltype(ctx.out()) { auto format(const T& value, Context& ctx) -> decltype(ctx.out()) {
basic_memory_buffer<Char> buffer; basic_memory_buffer<Char> buffer;
format_value(buffer, value); format_value(buffer, value, ctx.locale());
basic_string_view<Char> str(buffer.data(), buffer.size()); basic_string_view<Char> str(buffer.data(), buffer.size());
return formatter<basic_string_view<Char>, Char>::format(str, ctx); return formatter<basic_string_view<Char>, Char>::format(str, ctx);
} }