osx_user_locale.mm

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#include "boost_locale_wrapper.h"
 
#import <Cocoa/Cocoa.h>
 
#include <cstdlib>
 
static char *user_locale = NULL;
 
// get current locale
const char *osx_user_locale()
{
  ::free(user_locale);
  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
  CFLocaleRef myCFLocale = CFLocaleCopyCurrent();
  NSLocale *myNSLocale = (NSLocale *)myCFLocale;
  [myNSLocale autorelease];
 
  // This produces gettext-invalid locale in recent macOS versions (11.4),
  // like `ko-Kore_KR` instead of `ko_KR`. See T88877.
  // NSString *nsIdentifier = [myNSLocale localeIdentifier];
 
  const NSString *nsIdentifier = [myNSLocale languageCode];
  const NSString *const nsIdentifier_country = [myNSLocale countryCode];
  if ([nsIdentifier length] != 0 && [nsIdentifier_country length] != 0) {
    nsIdentifier = [NSString stringWithFormat:@"%@_%@", nsIdentifier, nsIdentifier_country];
  }
 
  user_locale = ::strdup([nsIdentifier UTF8String]);
  [pool drain];
 
  return user_locale;
}