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Add compilation support with Newlib nano for embedded targets

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Remove the dependency on std::locale to reduce executable sizes

For embedded target the usage of locale bring a huge amount of code to the executable, just to get hold of the thousands separator. Using a static defined thousands separator makes libfmt embedded target friendly.
This commit is contained in:
Thomas Bernard 2018-08-17 11:22:56 +02:00 committed by Victor Zverovich
parent 18400503da
commit abde38b4fb
2 changed files with 14 additions and 3 deletions
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12
include/fmt/format-inl.h
View File

@ -18,7 +18,9 @@
#include <cmath>
#include <cstdarg>
#include <cstddef> // for std::ptrdiff_t
#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
# include <locale>
#endif
#if defined(_WIN32) && defined(__MINGW32__)
# include <cstring>
@ -193,6 +195,7 @@ void report_error(FormatFunc func, int error_code,
}
} // namespace
#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
class locale {
private:
std::locale locale_;
@ -217,6 +220,12 @@ FMT_FUNC Char internal::thousands_sep(locale_provider *lp) {
std::locale loc = lp ? lp->locale().get() : std::locale();
return std::use_facet<std::numpunct<Char>>(loc).thousands_sep();
}
#else
template <typename Char>
FMT_FUNC Char internal::thousands_sep(locale_provider *lp) {
return FMT_STATIC_THOUSANDS_SEPARATOR;
}
#endif
FMT_FUNC void system_error::init(
int err_code, string_view format_str, format_args args) {
@ -569,8 +578,9 @@ FMT_FUNC void vprint_rgb(rgb fd, rgb bg, string_view format, format_args args) {
std::fputs(internal::data::RESET_COLOR, stdout);
}
#endif
#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
FMT_FUNC locale locale_provider::locale() { return fmt::locale(); }
#endif
FMT_END_NAMESPACE

3
include/fmt/posix.h
View File

@ -266,7 +266,8 @@ class file {
long getpagesize();
#if (defined(LC_NUMERIC_MASK) || defined(_MSC_VER)) && \
!defined(__ANDROID__) && !defined(__CYGWIN__) && !defined(__OpenBSD__)
!defined(__ANDROID__) && !defined(__CYGWIN__) && !defined(__OpenBSD__) && \
!defined(__NEWLIB_H__)
# define FMT_LOCALE
#endif