Browse Source
#include <locale.h> const char *getlocalename_l(int category, locale_t locobj); Most notably, we need a per-thread space to store the string returned if locobj is LC_GLOBAL_LOCALE. No errors are defined for getlocalename_l. So we can't use buffer allocation which might lead to an ENOMEM error. We have to use a "static" buffer in the per-thread state. Note that the feature test macro in locale.h is not quite correct. This needs to be fixed as soon as the Signed-off-by: Corinna Vinschen <corinna@vinschen.de>topic/3.6
Corinna Vinschen
3 years ago
5 changed files with 116 additions and 0 deletions
@ -0,0 +1,77 @@ |
|||
/*
|
|||
FUNCTION |
|||
<<getlocalename_l>>---create or modify a locale object |
|||
|
|||
INDEX |
|||
getlocalename_l |
|||
|
|||
INDEX |
|||
_getlocalename_l_r |
|||
|
|||
SYNOPSIS |
|||
#include <locale.h> |
|||
locale_t getlocalename_l(int <[category]>, locale_t <[locobj]>); |
|||
|
|||
locale_t _getlocalename_l_r(void *<[reent]>, int <[category]>, |
|||
locale_t <[locobj]>); |
|||
|
|||
DESCRIPTION |
|||
The <<getlocalename_l>> function shall return the locale name for the |
|||
given locale category of the locale object locobj, or of the global |
|||
locale if locobj is the special locale object LC_GLOBAL_LOCALE. |
|||
|
|||
The category argument specifies the locale category to be queried. If |
|||
the value is LC_ALL or is not a supported locale category value (see |
|||
<<setlocale>>), <<getlocalename_l>> shall fail. |
|||
|
|||
The behavior is undefined if the locobj argument is neither the special |
|||
locale object LC_GLOBAL_LOCALE nor a valid locale object handle. |
|||
|
|||
RETURNS |
|||
Upon successful completion, <<getlocalename_l>> shall return a pointer |
|||
to a string containing the locale name; otherwise, a null pointer shall |
|||
be returned. |
|||
|
|||
If locobj is LC_GLOBAL_LOCALE, the returned string pointer might be |
|||
invalidated or the string content might be overwritten by a subsequent |
|||
call in the same thread to <<getlocalename_l>> with LC_GLOBAL_LOCALE; |
|||
the returned string pointer might also be invalidated if the calling |
|||
thread is terminated. Otherwise, the returned string pointer and content |
|||
shall remain valid until the locale object locobj is used in a call to |
|||
<<freelocale>> or as the base argument in a successful call to |
|||
<<newlocale>>. |
|||
|
|||
No errors are defined. |
|||
|
|||
PORTABILITY |
|||
<<getlocalename_l>> is POSIX-1.2008 since Base Specification Issue 8 |
|||
*/ |
|||
|
|||
#include <newlib.h> |
|||
#include "setlocale.h" |
|||
|
|||
const char * |
|||
_getlocalename_l_r (struct _reent *ptr, int category, struct __locale_t *locobj) |
|||
{ |
|||
if (category <= LC_ALL || category > LC_MESSAGES) |
|||
return NULL; |
|||
#ifndef _MB_CAPABLE |
|||
return "C"; |
|||
#else |
|||
if (locobj == LC_GLOBAL_LOCALE) |
|||
{ |
|||
/* getlocalename_l is supposed to return the value in a
|
|||
thread-safe manner. This requires to copy over the |
|||
category string into thread-local storage. */ |
|||
strcpy (_REENT_GETLOCALENAME_L_BUF (ptr), |
|||
__get_global_locale ()->categories[category]); |
|||
} |
|||
return locobj->categories[category]; |
|||
#endif |
|||
} |
|||
|
|||
const char * |
|||
getlocalename_l (int category, struct __locale_t *locobj) |
|||
{ |
|||
return _getlocalename_l_r (_REENT, category, locobj); |
|||
} |
|||
Loading…
Reference in new issue