1101776Stjr/*- 2129583Stjr * Copyright (c) 2002-2004 Tim J. Robbins. 3101776Stjr * All rights reserved. 4101776Stjr * 5227753Stheraven * Copyright (c) 2011 The FreeBSD Foundation 6227753Stheraven * All rights reserved. 7227753Stheraven * Portions of this software were developed by David Chisnall 8227753Stheraven * under sponsorship from the FreeBSD Foundation. 9227753Stheraven * 10101776Stjr * Redistribution and use in source and binary forms, with or without 11101776Stjr * modification, are permitted provided that the following conditions 12101776Stjr * are met: 13101776Stjr * 1. Redistributions of source code must retain the above copyright 14101776Stjr * notice, this list of conditions and the following disclaimer. 15101776Stjr * 2. Redistributions in binary form must reproduce the above copyright 16101776Stjr * notice, this list of conditions and the following disclaimer in the 17101776Stjr * documentation and/or other materials provided with the distribution. 18101776Stjr * 19101776Stjr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20101776Stjr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21101776Stjr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22101776Stjr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23101776Stjr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24101776Stjr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25101776Stjr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26101776Stjr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27101776Stjr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28101776Stjr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29101776Stjr * SUCH DAMAGE. 30101776Stjr */ 31101776Stjr 32101776Stjr#include <sys/cdefs.h> 33101776Stjr__FBSDID("$FreeBSD$"); 34101776Stjr 35101776Stjr#include "namespace.h" 36101776Stjr#include <errno.h> 37149313Sstefanf#include <limits.h> 38101776Stjr#include <stdio.h> 39103523Stjr#include <stdlib.h> 40101776Stjr#include <wchar.h> 41101776Stjr#include "un-namespace.h" 42101776Stjr#include "libc_private.h" 43101776Stjr#include "local.h" 44132442Stjr#include "mblocal.h" 45227753Stheraven#include "xlocale_private.h" 46101776Stjr 47103782Stjr/* 48103782Stjr * Non-MT-safe version. 49103782Stjr */ 50101776Stjrwint_t 51227753Stheraven__ungetwc(wint_t wc, FILE *fp, locale_t locale) 52101776Stjr{ 53103523Stjr char buf[MB_LEN_MAX]; 54103523Stjr size_t len; 55227753Stheraven struct xlocale_ctype *l = XLOCALE_CTYPE(locale); 56101776Stjr 57103523Stjr if (wc == WEOF) 58103782Stjr return (WEOF); 59227753Stheraven if ((len = l->__wcrtomb(buf, wc, &fp->_mbstate)) == (size_t)-1) { 60105234Stjr fp->_flags |= __SERR; 61103782Stjr return (WEOF); 62105234Stjr } 63103523Stjr while (len-- != 0) 64103677Stjr if (__ungetc((unsigned char)buf[len], fp) == EOF) 65103782Stjr return (WEOF); 66103523Stjr 67103523Stjr return (wc); 68103782Stjr} 69103677Stjr 70103782Stjr/* 71103782Stjr * MT-safe version. 72103782Stjr */ 73103782Stjrwint_t 74227753Stheravenungetwc_l(wint_t wc, FILE *fp, locale_t locale) 75103782Stjr{ 76103782Stjr wint_t r; 77227753Stheraven FIX_LOCALE(locale); 78103782Stjr 79103782Stjr FLOCKFILE(fp); 80103782Stjr ORIENT(fp, 1); 81227753Stheraven r = __ungetwc(wc, fp, locale); 82103677Stjr FUNLOCKFILE(fp); 83103782Stjr 84103782Stjr return (r); 85101776Stjr} 86227753Stheravenwint_t 87227753Stheravenungetwc(wint_t wc, FILE *fp) 88227753Stheraven{ 89227753Stheraven return ungetwc_l(wc, fp, __get_locale()); 90227753Stheraven} 91