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More locale support

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This commit is contained in:
Victor Zverovich 2018-11-14 15:35:24 -08:00
parent f2ee988105
commit 19e008876b
3 changed files with 50 additions and 7 deletions
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2
include/fmt/format.h
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@ -3468,7 +3468,7 @@ template <typename String, typename OutputIt, typename... Args>
inline typename std::enable_if<internal::is_output_iterator<OutputIt>::value,
OutputIt>::type
vformat_to(OutputIt out, const String &format_str,
typename format_args_t<OutputIt, FMT_CHAR(String)>::type args) {
typename format_args_t<OutputIt, FMT_CHAR(String)>::type args) {
typedef output_range<OutputIt, FMT_CHAR(String)> range;
return vformat_to<arg_formatter<range>>(range(out),
to_string_view(format_str), args);

30
include/fmt/locale.h
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@ -34,6 +34,13 @@ std::basic_string<Char> vformat(
}
}
template <typename S, typename Char = FMT_CHAR(S)>
inline std::basic_string<Char> vformat(
const std::locale &loc, const S &format_str,
basic_format_args<typename buffer_context<Char>::type> args) {
return internal::vformat(loc, to_string_view(format_str), args);
}
template <typename S, typename... Args>
inline std::basic_string<FMT_CHAR(S)> format(
const std::locale &loc, const S &format_str, const Args &... args) {
@ -42,6 +49,29 @@ inline std::basic_string<FMT_CHAR(S)> format(
*internal::checked_args<S, Args...>(format_str, args...));
}
template <typename String, typename OutputIt, typename... Args>
inline typename std::enable_if<internal::is_output_iterator<OutputIt>::value,
OutputIt>::type
vformat_to(OutputIt out, const std::locale &loc, const String &format_str,
typename format_args_t<OutputIt, FMT_CHAR(String)>::type args) {
typedef output_range<OutputIt, FMT_CHAR(String)> range;
return vformat_to<arg_formatter<range>>(
range(out), to_string_view(format_str), args, internal::locale_ref(loc));
}
template <typename OutputIt, typename S, typename... Args>
inline typename std::enable_if<
internal::is_string<S>::value &&
internal::is_output_iterator<OutputIt>::value, OutputIt>::type
format_to(OutputIt out, const std::locale &loc, const S &format_str,
const Args &... args) {
internal::check_format_string<Args...>(format_str);
typedef typename format_context_t<OutputIt, FMT_CHAR(S)>::type context;
format_arg_store<context, Args...> as{args...};
return vformat_to(out, loc, to_string_view(format_str),
basic_format_args<context>(as));
}
FMT_END_NAMESPACE
#endif // FMT_LOCALE_H_

25
test/locale-test.cc
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@ -8,14 +8,27 @@
#include "fmt/locale.h"
#include "gmock.h"
struct numpunct : std::numpunct<char> {
template <typename Char>
struct numpunct : std::numpunct<Char> {
protected:
char do_thousands_sep() const FMT_OVERRIDE { return '~'; }
Char do_thousands_sep() const FMT_OVERRIDE { return '~'; }
};
TEST(LocaleTest, Format) {
std::locale loc;
EXPECT_EQ("1~234~567",
fmt::format(std::locale(loc, new numpunct()), "{:n}", 1234567));
EXPECT_EQ("1,234,567", fmt::format(loc, "{:n}", 1234567));
std::locale loc(std::locale(), new numpunct<char>());
EXPECT_EQ("1,234,567", fmt::format(std::locale(), "{:n}", 1234567));
EXPECT_EQ("1~234~567", fmt::format(loc, "{:n}", 1234567));
fmt::format_arg_store<fmt::format_context, int> as{1234567};
EXPECT_EQ("1~234~567", fmt::vformat(loc, "{:n}", fmt::format_args(as)));
std::string s;
fmt::format_to(std::back_inserter(s), loc, "{:n}", 1234567);
EXPECT_EQ("1~234~567", s);
}
TEST(LocaleTest, WFormat) {
std::locale loc(std::locale(), new numpunct<wchar_t>());
EXPECT_EQ(L"1,234,567", fmt::format(std::locale(), L"{:n}", 1234567));
EXPECT_EQ(L"1~234~567", fmt::format(loc, L"{:n}", 1234567));
fmt::format_arg_store<fmt::wformat_context, int> as{1234567};
EXPECT_EQ(L"1~234~567", fmt::vformat(loc, L"{:n}", fmt::wformat_args(as)));
}