| 1 | /* |
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| 2 | FUNCTION |
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| 3 | <<duplocale>>---duplicate a locale object |
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| 4 | |
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| 5 | INDEX |
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| 6 | duplocale |
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| 7 | |
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| 8 | INDEX |
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| 9 | _duplocale_r |
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| 10 | |
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| 11 | SYNOPSIS |
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| 12 | #include <locale.h> |
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| 13 | locale_t duplocale(locale_t <[locobj]>); |
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| 14 | |
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| 15 | locale_t _duplocale_r(void *<[reent]>, locale_t <[locobj]>); |
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| 16 | |
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| 17 | DESCRIPTION |
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| 18 | The <<duplocale>> function shall create a duplicate copy of the locale |
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| 19 | object referenced by the <[locobj]> argument. |
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| 20 | |
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| 21 | If the <[locobj]> argument is LC_GLOBAL_LOCALE, duplocale() shall create |
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| 22 | a new locale object containing a copy of the global locale determined by |
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| 23 | the setlocale() function. |
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| 24 | |
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| 25 | The behavior is undefined if the <[locobj]> argument is not a valid locale |
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| 26 | object handle. |
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| 27 | |
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| 28 | RETURNS |
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| 29 | Upon successful completion, the <<duplocale>> function shall return a |
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| 30 | handle for a new locale object. Otherwise <<duplocale>> shall return |
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| 31 | (locale_t) <<0>> and set errno to indicate the error. |
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| 32 | |
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| 33 | PORTABILITY |
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| 34 | <<duplocale>> is POSIX-1.2008. |
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| 35 | */ |
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| 36 | |
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| 37 | #include <newlib.h> |
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| 38 | #include <reent.h> |
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| 39 | #include <stdlib.h> |
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| 40 | #include "setlocale.h" |
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| 41 | |
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| 42 | struct __locale_t * |
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| 43 | _duplocale_r (struct _reent *p, struct __locale_t *locobj) |
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| 44 | { |
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| 45 | struct __locale_t tmp_locale, *new_locale; |
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| 46 | int i; |
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| 47 | |
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| 48 | #ifndef _MB_CAPABLE |
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| 49 | return __get_C_locale (); |
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| 50 | #else /* _MB_CAPABLE */ |
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| 51 | /* LC_GLOBAL_LOCALE denotes the global locale. */ |
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| 52 | if (locobj == LC_GLOBAL_LOCALE) |
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| 53 | locobj = __get_global_locale (); |
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| 54 | /* The "C" locale is used statically, never copied. */ |
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| 55 | else if (locobj == __get_C_locale ()) |
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| 56 | return __get_C_locale (); |
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| 57 | /* Copy locale content. */ |
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| 58 | tmp_locale = *locobj; |
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| 59 | #ifdef __HAVE_LOCALE_INFO__ |
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| 60 | for (i = 1; i < _LC_LAST; ++i) |
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| 61 | if (locobj->lc_cat[i].buf) |
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| 62 | { |
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| 63 | /* If the object is not a "C" locale category, copy it. Just call |
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| 64 | __loadlocale. It knows what to do to replicate the category. */ |
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| 65 | tmp_locale.lc_cat[i].ptr = NULL; |
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| 66 | tmp_locale.lc_cat[i].buf = NULL; |
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| 67 | tmp_locale.categories[i][0] = '\0'; /* __loadlocale tests this! */ |
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| 68 | if (!__loadlocale (&tmp_locale, i, locobj->categories[i])) |
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| 69 | goto error; |
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| 70 | } |
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| 71 | #endif /* __HAVE_LOCALE_INFO__ */ |
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| 72 | /* Allocate new locale_t. */ |
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| 73 | new_locale = (struct __locale_t *) _calloc_r (p, 1, sizeof *new_locale); |
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| 74 | if (!new_locale) |
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| 75 | goto error; |
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| 76 | |
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| 77 | *new_locale = tmp_locale; |
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| 78 | return new_locale; |
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| 79 | |
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| 80 | error: |
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| 81 | /* An error occured while we had already (potentially) allocated memory. |
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| 82 | Free memory and return NULL. errno is supposed to be set already. */ |
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| 83 | #ifdef __HAVE_LOCALE_INFO__ |
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| 84 | while (--i > 0) |
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| 85 | if (tmp_locale.lc_cat[i].buf) |
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| 86 | { |
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| 87 | _free_r (p, (void *) tmp_locale.lc_cat[i].ptr); |
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| 88 | _free_r (p, tmp_locale.lc_cat[i].buf); |
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| 89 | } |
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| 90 | #endif /* __HAVE_LOCALE_INFO__ */ |
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| 91 | |
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| 92 | return NULL; |
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| 93 | #endif /* _MB_CAPABLE */ |
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| 94 | } |
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| 95 | |
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| 96 | #ifndef _REENT_ONLY |
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| 97 | struct __locale_t * |
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| 98 | duplocale (struct __locale_t *locobj) |
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| 99 | { |
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| 100 | return _duplocale_r (_REENT, locobj); |
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| 101 | } |
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| 102 | #endif |
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