2964 need POSIX 2008 locale object support
Reviewed by: Robert Mustacchi <rm@joyent.com>

*** 1,6 ****
--- 1,7 ----
  /*
+  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
   * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
   * Copyright (c) 1991, 1993
   *      The Regents of the University of California.  All rights reserved.
   *
*** 35,73 ****
  
  #include "lint.h"
  #include <locale.h>
  #include "lmonetary.h"
  #include "lnumeric.h"
  
  /*
!  * The localeconv() function constructs a struct lconv from the current
!  * monetary and numeric locales.
   *
   * Because localeconv() may be called many times (especially by library
   * routines like printf() & strtod()), the approprate members of the
   * lconv structure are computed only when the monetary or numeric
   * locale has been changed.
   */
- int __mlocale_changed = 1;
- int __nlocale_changed = 1;
- 
- /*
-  * Return the current locale conversion.
-  */
  struct lconv *
  localeconv(void)
  {
!         static struct lconv ret;
  
!         if (__mlocale_changed) {
!                 /* LC_MONETARY part */
!                 struct lc_monetary_T *mptr;
  
! #define M_ASSIGN_STR(NAME) (ret.NAME = (char *)mptr->NAME)
! #define M_ASSIGN_CHAR(NAME) (ret.NAME = mptr->NAME[0])
  
!                 mptr = __get_current_monetary_locale();
                  M_ASSIGN_STR(int_curr_symbol);
                  M_ASSIGN_STR(currency_symbol);
                  M_ASSIGN_STR(mon_decimal_point);
                  M_ASSIGN_STR(mon_thousands_sep);
                  M_ASSIGN_STR(mon_grouping);
--- 36,76 ----
  
  #include "lint.h"
  #include <locale.h>
  #include "lmonetary.h"
  #include "lnumeric.h"
+ #include "localeimpl.h"
  
  /*
!  * Return the current locale conversion.
   *
+  * Note that XPG7 specifically states that localeconv's return value may
+  * be invalidated if the application calls setlocale() or uselocale() within
+  * the same thread.
+  *
   * Because localeconv() may be called many times (especially by library
   * routines like printf() & strtod()), the approprate members of the
   * lconv structure are computed only when the monetary or numeric
   * locale has been changed.
   */
  struct lconv *
  localeconv(void)
  {
!         struct lconv    *lconv;
!         locale_t        loc;
!         struct lc_monetary      *mptr;
!         struct lc_numeric       *nptr;
  
!         loc = uselocale(NULL);
!         lconv = &loc->lconv;
  
!         if (loc->loaded[LC_MONETARY] == 0) {
!                 mptr = loc->locdata[LC_MONETARY]->l_data[0];
  
! #define M_ASSIGN_STR(NAME) (lconv->NAME = (char *)mptr->NAME)
! #define M_ASSIGN_CHAR(NAME) (lconv->NAME = mptr->NAME[0])
! 
                  M_ASSIGN_STR(int_curr_symbol);
                  M_ASSIGN_STR(currency_symbol);
                  M_ASSIGN_STR(mon_decimal_point);
                  M_ASSIGN_STR(mon_thousands_sep);
                  M_ASSIGN_STR(mon_grouping);
*** 85,107 ****
                  M_ASSIGN_CHAR(int_n_cs_precedes);
                  M_ASSIGN_CHAR(int_p_sep_by_space);
                  M_ASSIGN_CHAR(int_n_sep_by_space);
                  M_ASSIGN_CHAR(int_p_sign_posn);
                  M_ASSIGN_CHAR(int_n_sign_posn);
!                 __mlocale_changed = 0;
          }
  
!         if (__nlocale_changed) {
!                 /* LC_NUMERIC part */
!                 struct lc_numeric_T *nptr;
  
! #define N_ASSIGN_STR(NAME) (ret.NAME = (char *)nptr->NAME)
  
-                 nptr = __get_current_numeric_locale();
                  N_ASSIGN_STR(decimal_point);
                  N_ASSIGN_STR(thousands_sep);
                  N_ASSIGN_STR(grouping);
!                 __nlocale_changed = 0;
          }
  
!         return (&ret);
  }
--- 88,108 ----
                  M_ASSIGN_CHAR(int_n_cs_precedes);
                  M_ASSIGN_CHAR(int_p_sep_by_space);
                  M_ASSIGN_CHAR(int_n_sep_by_space);
                  M_ASSIGN_CHAR(int_p_sign_posn);
                  M_ASSIGN_CHAR(int_n_sign_posn);
!                 loc->loaded[LC_MONETARY] = 1;
          }
  
!         if (loc->loaded[LC_NUMERIC] == 0) {
!                 nptr = loc->locdata[LC_NUMERIC]->l_data[0];
  
! #define N_ASSIGN_STR(NAME) (lconv->NAME = (char *)nptr->NAME)
  
                  N_ASSIGN_STR(decimal_point);
                  N_ASSIGN_STR(thousands_sep);
                  N_ASSIGN_STR(grouping);
!                 loc->loaded[LC_NUMERIC] = 1;
          }
  
!         return (lconv);
  }