/* setlocale.c - ANSI locale *//* Copyright 1992-1993 Wind River Systems, Inc. *//*modification history--------------------01f,30aug93,jmm  fixed null pointer dereference in setlocale() (spr 2490)01e,07feb93,jdi  documentation cleanup for 5.1.01d,28sep92,smb  added ANSI to function description01c,20sep92,smb  documentation additions01b,14sep92,smb  added some minor error checking.01a,08jul92,smb  written*//*DESCRIPTIONINCLUDE FILE: locale.h string.h stdlib.h SEE ALSO: American National Standard X3.159-1989NOMANUAL*/#include "vxWorks.h"#include "locale.h"#include "string.h"#include "stdlib.h"#include "ctype.h"#include "private/localeP.h"LOCAL char *currentName = "C";		/* current locale name */__linfo	    __clocale =     {    "C"    };/********************************************************************************* setlocale - set the appropriate locale (ANSI)** This function selects the appropriate portion of the program's locale as* specified by the <category> and <localeName> arguments.  This routine can* be used to change or query the program's entire current locale or portions* thereof.** Values for <category> affect the locale as follows:* .iP LC_ALL* specifies the program's entire locale.* .iP LC_COLLATE* affects the behavior of the strcoll() and strxfrm() functions.* .iP LC_CTYPE* affects the behavior of the character-handling functions and the multi-byte* functions.* .iP LC_MONETARY* affects the monetary-formatting information returned by localeconv().* .iP LC_NUMERIC* affects the decimal-point character for the formatted input/output* functions and the string-conversion functions, as well as the* nonmonetary-formatting information returned by localeconv().* .iP LC_TIME* affects the behavior of the strftime() function.* .LP** A value of "C" for <localeName> specifies the minimal environment for C* translation; a value of "" specifies the implementation-defined native* environment.  Other implementation-defined strings may be passed as the* second argument.** At program start-up, the equivalent of the following is executed:* .CS*     setlocale (LC_ALL, "C");* .CE** The implementation behaves as if no library function calls setlocale().** If <localeName> is a pointer to a string and the selection can be* honored, setlocale() returns a pointer to the string associated with the* specified category for the new locale.  If the selection cannot be* honored, it returns a null pointer and the program's locale is unchanged.** If <localeName> is null pointer, setlocale() returns a pointer to the* string associated with the category for the program's current locale; the* program's locale is unchanged.** The string pointer returned by setlocale() is such that a subsequent call* with that string value and its associated category will restore that part* of the program's locale.  The string is not modified by the program, but* may be overwritten by a subsequent call to setlocale().** Currently, only the "C" locale is implemented in this library.** INCLUDE FILES: locale.h, string.h, stdlib.h ** RETURNS: A pointer to the string "C".*/char *setlocale     (    int		category,	/* category to change */    const char *localeName	/* locale name */    )    {    if (localeName != NULL &&	(strcmp (localeName, currentName) != 0) && 	(strcmp (localeName, "") != 0))	        return (NULL);    return (CHAR_FROM_CONST(currentName));    }