mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
f1f1b6b95a
* wcsmbs/mbrtowc.c: Set flush to 1 for conversion function calls depending on whether the input string is empty or not. * wcsmbs/mbrtowc.c: Calling function without input means clearing the given state and not avoiding this by modifying a local object. * wcsmbs/wcrtomb.c: Likewise. * iconv/skeleton.c: If no EMIT_SHIFT_TO_INIT is defined clear state object since some incomplete characters might be in there.
111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/* Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
|
|
|
|
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 <dlfcn.h>
|
|
#include <errno.h>
|
|
#include <gconv.h>
|
|
#include <stdlib.h>
|
|
#include <wchar.h>
|
|
#include <wcsmbsload.h>
|
|
|
|
#include <assert.h>
|
|
|
|
#ifndef EILSEQ
|
|
# define EILSEQ EINVAL
|
|
#endif
|
|
|
|
|
|
/* This is the private state used if PS is NULL. */
|
|
static mbstate_t state;
|
|
|
|
size_t
|
|
__wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
|
|
{
|
|
char buf[MB_CUR_MAX];
|
|
struct __gconv_step_data data;
|
|
int status;
|
|
size_t result;
|
|
size_t dummy;
|
|
|
|
/* Set information for this step. */
|
|
data.__invocation_counter = 0;
|
|
data.__internal_use = 1;
|
|
data.__flags = __GCONV_IS_LAST;
|
|
data.__statep = ps ?: &state;
|
|
data.__trans = NULL;
|
|
|
|
/* A first special case is if S is NULL. This means put PS in the
|
|
initial state. */
|
|
if (s == NULL)
|
|
{
|
|
s = buf;
|
|
wc = L'\0';
|
|
}
|
|
|
|
/* Tell where we want to have the result. */
|
|
data.__outbuf = s;
|
|
data.__outbufend = s + MB_CUR_MAX;
|
|
|
|
/* Make sure we use the correct function. */
|
|
update_conversion_ptrs ();
|
|
|
|
/* If WC is the NUL character we write into the output buffer the byte
|
|
sequence necessary for PS to get into the initial state, followed
|
|
by a NUL byte. */
|
|
if (wc == L'\0')
|
|
{
|
|
status = DL_CALL_FCT (__wcsmbs_gconv_fcts.tomb->__fct,
|
|
(__wcsmbs_gconv_fcts.tomb, &data, NULL, NULL,
|
|
NULL, &dummy, 1, 1));
|
|
|
|
if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
|
|
*data.__outbuf++ = '\0';
|
|
}
|
|
else
|
|
{
|
|
/* Do a normal conversion. */
|
|
const unsigned char *inbuf = (const unsigned char *) &wc;
|
|
|
|
status = DL_CALL_FCT (__wcsmbs_gconv_fcts.tomb->__fct,
|
|
(__wcsmbs_gconv_fcts.tomb, &data, &inbuf,
|
|
inbuf + sizeof (wchar_t), NULL, &dummy, 0, 1));
|
|
}
|
|
|
|
/* There must not be any problems with the conversion but illegal input
|
|
characters. The output buffer must be large enough, otherwise the
|
|
definition of MB_CUR_MAX is not correct. All the other possible
|
|
errors also must not happen. */
|
|
assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
|
|
|| status == __GCONV_ILLEGAL_INPUT
|
|
|| status == __GCONV_INCOMPLETE_INPUT
|
|
|| status == __GCONV_FULL_OUTPUT);
|
|
|
|
if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
|
|
|| status == __GCONV_FULL_OUTPUT)
|
|
result = data.__outbuf - (unsigned char *) s;
|
|
else
|
|
{
|
|
result = (size_t) -1;
|
|
__set_errno (EILSEQ);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
weak_alias (__wcrtomb, wcrtomb)
|