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#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>
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
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FUNCTION
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<<getlocalename_l>>---create or modify a locale object
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INDEX
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getlocalename_l
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INDEX
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_getlocalename_l_r
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SYNOPSIS
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#include <locale.h>
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locale_t getlocalename_l(int <[category]>, locale_t <[locobj]>);
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locale_t _getlocalename_l_r(void *<[reent]>, int <[category]>,
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locale_t <[locobj]>);
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DESCRIPTION
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The <<getlocalename_l>> function shall return the locale name for the
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given locale category of the locale object locobj, or of the global
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locale if locobj is the special locale object LC_GLOBAL_LOCALE.
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The category argument specifies the locale category to be queried. If
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the value is LC_ALL or is not a supported locale category value (see
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<<setlocale>>), <<getlocalename_l>> shall fail.
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The behavior is undefined if the locobj argument is neither the special
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locale object LC_GLOBAL_LOCALE nor a valid locale object handle.
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RETURNS
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Upon successful completion, <<getlocalename_l>> shall return a pointer
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to a string containing the locale name; otherwise, a null pointer shall
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be returned.
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If locobj is LC_GLOBAL_LOCALE, the returned string pointer might be
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invalidated or the string content might be overwritten by a subsequent
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call in the same thread to <<getlocalename_l>> with LC_GLOBAL_LOCALE;
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the returned string pointer might also be invalidated if the calling
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thread is terminated. Otherwise, the returned string pointer and content
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shall remain valid until the locale object locobj is used in a call to
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<<freelocale>> or as the base argument in a successful call to
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<<newlocale>>.
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No errors are defined.
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PORTABILITY
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<<getlocalename_l>> is POSIX-1.2008 since Base Specification Issue 8
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*/
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#include <newlib.h>
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#include "setlocale.h"
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const char *
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_getlocalename_l_r (struct _reent *ptr, int category, struct __locale_t *locobj)
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{
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if (category <= LC_ALL || category > LC_MESSAGES)
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return NULL;
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#ifndef _MB_CAPABLE
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return "C";
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#else
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if (locobj == LC_GLOBAL_LOCALE)
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{
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/* getlocalename_l is supposed to return the value in a
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thread-safe manner. This requires to copy over the
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category string into thread-local storage. */
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strcpy (_REENT_GETLOCALENAME_L_BUF (ptr),
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__get_global_locale ()->categories[category]);
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}
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return locobj->categories[category];
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#endif
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}
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const char *
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getlocalename_l (int category, struct __locale_t *locobj)
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{
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return _getlocalename_l_r (_REENT, category, locobj);
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}
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