mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 02:10:05 +00:00
9ce5071a3d
1998-04-21 19:05 Ulrich Drepper <drepper@cygnus.com> * iconv/gconv.h (struct gconv_step): Add element stateful. * iconv/gconv_builtin.c (__gconv_builtin_trans): Initialize stateful to zero for all internal conversions. * iconv/skeleton.c: Initialize stateful depending on whether or not RESET_STATE is defined to one or zero respectively. * stdlib/mblen.c: Use stateful element of currently selected converter for result if S is NULL. * stdlib/mbtowc.c: Likewise. * stdlib/wctomb.c: Likewise.
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/* Copyright (C) 1991, 92, 95, 96, 97, 98 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
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <stdlib.h>
|
|
#include <wchar.h>
|
|
#include <gconv.h>
|
|
#include <wcsmbs/wcsmbsload.h>
|
|
|
|
|
|
/* Common state for all non-restartable conversion functions. */
|
|
mbstate_t __no_r_state;
|
|
|
|
/* Convert the multibyte character at S, which is no longer
|
|
than N characters, to its `wchar_t' representation, placing
|
|
this n *PWC 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 `mbrtowc'. */
|
|
int
|
|
mbtowc (wchar_t *pwc, const char *s, size_t n)
|
|
{
|
|
int result;
|
|
|
|
/* If S is NULL the function has to return null or not null
|
|
depending on the encoding having a state depending encoding or
|
|
not. */
|
|
if (s == NULL)
|
|
{
|
|
/* Make sure we use the correct value. */
|
|
update_conversion_ptrs ();
|
|
|
|
result = __wcsmbs_gconv_fcts.towc->stateful;
|
|
}
|
|
else if (*s == '\0')
|
|
{
|
|
if (pwc != NULL)
|
|
*pwc = L'\0';
|
|
result = 0;
|
|
}
|
|
else
|
|
{
|
|
result = __mbrtowc (pwc, s, n, &__no_r_state);
|
|
|
|
/* The `mbrtowc' functions tell us more than we need. Fold the -1
|
|
and -2 result into -1. */
|
|
if (result < 0)
|
|
result = -1;
|
|
}
|
|
|
|
return result;
|
|
}
|