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    Command:

    freelocale

    
    
    

    SYNOPSIS

           #include <locale.h>
    
           locale_t newlocale(int category_mask, const char *locale,
                              locale_t base);
    
           void freelocale(locale_t locobj);
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           newlocale(), freelocale():
               Since glibc 2.10:
                      _XOPEN_SOURCE >= 700
               Before glibc 2.10:
                      _GNU_SOURCE
    
    
    

    DESCRIPTION

           The  newlocale()  function  creates a new locale object, or modifies an
           existing object, returning a reference to the new or modified object as
           the function result.  Whether the call creates a new object or modifies
           an existing object is determined by the value of base:
    
           *  If base is (locale_t) 0, a new object is created.
    
           *  If base refers to valid existing  locale  object  (i.e.,  an  object
              returned  by  a  previous call to newlocale() or duplocale(3)), then
              that object is modified by the call.  If the call is successful, the
              contents of base are unspecified (in particular, the object referred
              to by base may be freed, and a new object created).  Therefore,  the
              caller  should  ensure  that  it stops using base before the call to
              newlocale(), and should subsequently refer to  the  modified  object
              via  the  reference  returned  as  the function result.  If the call
              fails, the contents of base remain valid and unchanged.
    
           If base is the  special  locale  object  LC_GLOBAL_LOCALE  (see  duplo-
           cale(3)),  or is not (locale_t) 0 and is not a valid locale object han-
           dle, the behavior is undefined.
    
           The category_mask argument is a bit mask that specifies the locale cat-
           egories that are to be set in a newly created locale object or modified
           in an existing object.  The mask is constructed by a bitwise OR of  the
           constants  LC_CTYPE_MASK,  LC_COLLATE_MASK,  LC_MESSAGES_MASK, LC_MONE-
           TARY_MASK, LC_NUMERIC_MASK, and LC_TIME_MASK.
    
           For each category specified in  category_mask,  the  locale  data  from
           locale  will  be  used in the object returned by newlocale().  If a new
           locale object is being created, data for all categories  not  specified
           in category_mask is taken from the default ("POSIX") locale.
    
           The  following  preset  values of locale are defined for all categories
           that can be specified in category_mask:
    
    
           Once a locale object has been freed, the program should make no further
           use of it.
    
    
    

    RETURN VALUE

           On success, newlocale() returns a handle that can be used in  calls  to
           duplocale(3),  freelocale(),  and  other functions that take a locale_t
           argument.  On error, newlocale() returns (locale_t) 0, and  sets  errno
           to indicate the cause of the error.
    
    
    

    ERRORS

           EINVAL One  or  more bits in category_mask do not correspond to a valid
                  locale category.
    
           EINVAL locale is NULL.
    
           ENOENT locale is not a string pointer referring to a valid locale.
    
           ENOMEM Insufficient memory to create a locale object.
    
    
    

    VERSIONS

           The newlocale() and freelocale() functions first  appeared  in  version
           2.3 of the GNU C library.
    
    
    

    CONFORMING TO

           POSIX.1-2008.
    
    
    

    NOTES

           Each  locale  object created by newlocale() should be deallocated using
           freelocale(3).
    
    
    

    EXAMPLE

           The program below takes up to two command-line  arguments,  which  each
           identify  locales.   The first argument is required, and is used to set
           the LC_NUMERIC category in a locale object created  using  newlocale().
           The  second  command-line argument is optional; if it is present, it is
           used to set the LC_TIME category of the locale object.
    
           Having created and initialized the  locale  object,  the  program  then
           applies  it using uselocale(3), and then tests the effect of the locale
           changes by:
    
           1. Displaying a floating-point number with  a  fractional  part.   This
              output  will  be  affected by the LC_NUMERIC setting.  In many Euro-
              pean-language locales, the fractional part of the  number  is  sepa-
              rated from the integer part using a comma, rather than a period.
    
           2. Displaying  the date.  The format and language of the output will be
              affected by the LC_TIME setting.
    
           The following shell sessions show some example runs of this program.
           Specify  the LC_TIME setting as an empty string, which causes the value
           to be taken from environment variable settings  (which,  here,  specify
           mi_NZ, New Zealand Maori):
    
               $ LC_ALL=mi_NZ ./a.out fr_FR ""
               123456,789
               Te Paraire, te 07 o Poutu-te-rangi, 2014 00:38:44 CET
    
       Program source
           #define _XOPEN_SOURCE 700
           #include <stdio.h>
           #include <stdlib.h>
           #include <locale.h>
           #include <time.h>
    
           #define errExit(msg)    do { perror(msg); exit(EXIT_FAILURE); \
                                   } while (0)
    
           int
           main(int argc, char *argv[])
           {
               char buf[100];
               time_t t;
               size_t s;
               struct tm *tm;
               locale_t loc, nloc;
    
               if (argc < 2) {
                   fprintf(stderr, "Usage: %s locale1 [locale2]\n", argv[0]);
                   exit(EXIT_FAILURE);
               }
    
               /* Create a new locale object, taking the LC_NUMERIC settings
                  from the locale specified in argv[1] */
    
               loc = newlocale(LC_NUMERIC_MASK, argv[1], (locale_t) 0);
               if (loc == (locale_t) 0)
                   errExit("newlocale");
    
               /* If a second command-line argument was specified, modify the
                  locale object to take the LC_TIME settings from the locale
                  specified in argv[2]. We assign the result of this newlocale()
                  call to 'nloc' rather than 'loc', since in some cases, we might
                  want to preserve 'loc' if this call fails. */
    
               if (argc > 2) {
                   nloc = newlocale(LC_TIME_MASK, argv[2], loc);
                   if (nloc == (locale_t) 0)
                       errExit("newlocale");
                   loc = nloc;
               }
    
    
               s = strftime(buf, sizeof(buf), "%c", tm);
               if (s == 0)
                   errExit("strftime");
    
               printf("%s\n", buf);
    
               /* Free the locale object */
    
               freelocale(loc);
    
               exit(EXIT_SUCCESS);
           }
    
    
    

    SEE ALSO

           locale(1),   duplocale(3),   setlocale(3),   uselocale(3),   locale(5),
           locale(7)
    
    
    

    Linux 2014-03-12 NEWLOCALE(3)

    
    
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