glibc/wcsmbs/btowc.c
Ulrich Drepper b117f744e1 Update.
1999-03-15  Ulrich Drepper  <drepper@cygnus.com>

	* iconv/gconv.h (gconv_fct): Change parameter from `char' to
	`unsigned char'.
	(gconv_step_data): Likewise.
	* iconv/gconv_int.h (__gconv): Likewise.
	(__BUILINT_TRANS): Likewise.
	* iconv/gconv.c (__gconv): Likewise.
	* iconv/iconv.c (iconv): Add casts for call of __gconv.
	* iconv/skeleton.c: Change local parameters and variable from `char' to
	`unsigned char'.  Remove casts from calls into modules.
	* iconvdata/iso-2022-jp.c (gconv): Change local variable outbuf from
	`char' to `unsigned char'.
	* wcsmbs/btowc.c: Change pointers from `char *' to `unsigned char *'.
	* wcsmbs/mbrtowc.c: Likewise.
	* wcsmbs/mbsnrtowcs.c: Likewise.
	* wcsmbs/mbsrtowcs.c: Likewise.
	* wcsmbs/wcrtomb.c: Likewise.
	* wcsmbs/wcsnrtombs.c: Likewise.
	* wcsmbs/wcsrtombs.c: Likewise.
	* wcsmbs/wctob.c: Likewise.
1999-03-15 20:41:16 +00:00

71 lines
2.2 KiB
C

/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.org>, 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 <gconv.h>
#include <stdio.h>
#include <string.h>
#include <wchar.h>
#include <wcsmbsload.h>
#include <limits.h>
wint_t
__btowc (c)
int c;
{
wchar_t result;
struct gconv_step_data data;
unsigned char inbuf[1];
const unsigned char *inptr = inbuf;
size_t dummy;
int status;
/* If the parameter does not fit into one byte or it is the EOF value
we can give the answer now. */
if (c < SCHAR_MIN || c > UCHAR_MAX || c == EOF)
return WEOF;
/* Tell where we want the result. */
data.outbuf = (unsigned char *) &result;
data.outbufend = data.outbuf + sizeof (wchar_t);
data.invocation_counter = 0;
data.internal_use = 1;
data.is_last = 1;
data.statep = &data.__state;
/* Make sure we start in the initial state. */
memset (&data.__state, '\0', sizeof (mbstate_t));
/* Make sure we use the correct function. */
update_conversion_ptrs ();
/* Create the input string. */
inbuf[0] = c;
status = (*__wcsmbs_gconv_fcts.towc->fct) (__wcsmbs_gconv_fcts.towc, &data,
&inptr, inptr + 1, &dummy, 0);
/* The conversion failed. */
if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
&& status != GCONV_EMPTY_INPUT)
result = WEOF;
return result;
}
weak_alias (__btowc, btowc)