/************************************************************************
*                                                                       *    
*  Copyright Digital Equipment Corporation 1998. All rights reserved.   *
*                                                                       *    
*  Restricted Rights: Use, duplication, or disclosure by the U.S.       *    
*  Government is subject to restrictions as set forth in subparagraph   *    
*  (c) (1) (ii) of DFARS 252.227-7013, or in FAR 52.227-19, or in FAR   *    
*  52.227-14 Alt. III, as applicable.                                   *    
*                                                                       *    
*  This software is proprietary to and embodies the confidential        *    
*  technology of Digital Equipment Corporation. Possession, use, or     *    
*  copying of this software and media is authorized only pursuant to a  *    
*  valid written license from Digital or an authorized sublicensor.     *    
*                                                                       *    
************************************************************************/

/*      nl_langinfo_example.c   */

#include <stdio.h>
#include <locale.h>
#include <langinfo.h>

/* This test sets up the British English locale, and then inquires on the */
/* data and time format, first day of the week, and abbreviated first     */
/* day of the week.                                                       */

#include <stdlib.h>
#include <string.h>

int main()
{
    char *return_val;
    char *nl_ptr;

    /*   set the locale, with user supplied locale name                   */

    return_val = setlocale(LC_ALL, "en_gb.iso8859-1");
    if (return_val == NULL) {
        printf("ERROR : The locale is unknown");
        exit(1);
    }
    printf("+-----------------------------------------------------+\n");

    /* Get the date and time format from the locale.                      */

    printf("D_T_FMT = ");

    /*  Compare the returned string from nl_langinfo with an empty        */
    /* string.                                                            */

    if (!strcmp((nl_ptr = (char *) nl_langinfo(D_T_FMT)), "")) {

        /* The string returned was empty this could mean that either      */
        /* 1) The locale does not contain a value for this item           */
        /* 2) The value for this item is an empty string                  */

        printf("nl_langinfo returned an empty string\n");
    }
    else {
        /* Display the date and time format                               */

        printf("%s\n", nl_ptr);
    }

    /* Get the full name for the first day of the week from locale        */

    printf("DAY_1 = ");

    /*  Compare the returned string from nl_langinfo with an empty        */
    /* string.                                                            */

    if (!strcmp((nl_ptr = (char *) nl_langinfo(DAY_1)), "")) {

        /* The string returned was empty this could mean that either      */
        /* 1) The locale does not contain a value for the first day of    */
        /* the week                                                       */
        /* 2) The value for the first day of the week is an empty string  */

        printf("nl_langinfo returned an empty string\n");
    }

    else {
        /* Display the full name of the first day of the week             */

        printf("%s\n", nl_ptr);
    }

    /* Get the abbreviated name for the first day of the week from locale */

    printf("ABDAY_1 = ");

    /*  Compare the returned string from nl_langinfo with an empty        */
    /* string.                                                           */

    if (!strcmp((nl_ptr = (char *) nl_langinfo(ABDAY_1)), "")) {

        /* The string returned was empty this could mean that either      */
        /* 1) The locale does not contain a value for the first day of    */
        /* the week                                                       */
        /* 2) The value for the first day of the week is an empty string  */

        printf("nl_langinfo returned an empty string\n");
    }

    else {

        /* Display the abbreviated name of the first day of the week      */

        printf("%s\n", nl_ptr);
    }
}