diff options
Diffstat (limited to 'stdlib/wctomb.c')
| -rw-r--r-- | stdlib/wctomb.c | 69 |
1 files changed, 18 insertions, 51 deletions
diff --git a/stdlib/wctomb.c b/stdlib/wctomb.c index 15f32ab71f..f7143add82 100644 --- a/stdlib/wctomb.c +++ b/stdlib/wctomb.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc. +/* Copyright (C) 1991, 1992, 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -16,63 +16,30 @@ License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <ansidecl.h> -#include "../locale/localeinfo.h" -#include <stddef.h> -#include <stdio.h> #include <stdlib.h> -#include <string.h> -#include <ctype.h> +#include <wchar.h> -extern long int _mb_shift; /* Defined in mbtowc.c. */ +extern mbstate_t __no_r_state; /* Defined in mbtowc.c. */ /* Convert WCHAR into its multibyte character representation, - putting this in S and returning its length. */ + putting this in S and returning its length. + + Attention: this function should NEVER be intentionally used. + The interface is completely stupid. The state is shared between + all conversion functions. You should use instead the restartable + version `wcrtomb'. */ int -DEFUN(wctomb, (s, wchar), register char *s AND wchar_t wchar) +wctomb (char *s, wchar_t wchar) { -#if 0 - register CONST mb_char *mb; - - if (_ctype_info->mbchar == NULL) - mb = NULL; - else - mb = _ctype_info->mbchar->mb_chars; -#endif - - /* If S is NULL, just say if we're shifted or not. */ + /* If S is NULL the function has to return null or not null + depending on the encoding having a state depending encoding or + not. This is nonsense because any multibyte encoding has a + state. The ISO C amendment 1 corrects this while introducing the + restartable functions. We simply say here all encodings have a + state. */ if (s == NULL) - return _mb_shift != 0; - - if (wchar == (wchar_t) '\0') - { - _mb_shift = 0; - /* See ANSI 4.4.1.1, line 21. */ - if (s != NULL) - *s = '\0'; - return 1; - } - else /* if (mb == NULL) */ - { - if ((wchar_t) (char) wchar == wchar && isascii ((char) wchar)) - { - /* A normal ASCII character translates to itself. */ - if (s != NULL) - *s = (char) wchar; - return 1; - } - return -1; - } + return 1; -#if 1 - return -1; -#else - mb += wchar + _mb_shift; - if (mb->string == NULL || mb->len == 0) - return -1; - memcpy((PTR) s, (CONST PTR) mb->string, mb->len + 1); - _mb_shift += mb->shift; - return mb->len; -#endif + return wcrtomb (s, wchar, &__no_r_state); } |