1e74101e4STim J. Robbins /*- 2d915a14eSPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3d915a14eSPedro F. Giffuni * 487275e43STim J. Robbins * Copyright (c) 2002-2004 Tim J. Robbins. 5e74101e4STim J. Robbins * All rights reserved. 6e74101e4STim J. Robbins * 73c87aa1dSDavid Chisnall * Copyright (c) 2011 The FreeBSD Foundation 8*5b5fa75aSEd Maste * 93c87aa1dSDavid Chisnall * Portions of this software were developed by David Chisnall 103c87aa1dSDavid Chisnall * under sponsorship from the FreeBSD Foundation. 113c87aa1dSDavid Chisnall * 12e74101e4STim J. Robbins * Redistribution and use in source and binary forms, with or without 13e74101e4STim J. Robbins * modification, are permitted provided that the following conditions 14e74101e4STim J. Robbins * are met: 15e74101e4STim J. Robbins * 1. Redistributions of source code must retain the above copyright 16e74101e4STim J. Robbins * notice, this list of conditions and the following disclaimer. 17e74101e4STim J. Robbins * 2. Redistributions in binary form must reproduce the above copyright 18e74101e4STim J. Robbins * notice, this list of conditions and the following disclaimer in the 19e74101e4STim J. Robbins * documentation and/or other materials provided with the distribution. 20e74101e4STim J. Robbins * 21e74101e4STim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22e74101e4STim J. Robbins * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23e74101e4STim J. Robbins * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24e74101e4STim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25e74101e4STim J. Robbins * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26e74101e4STim J. Robbins * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27e74101e4STim J. Robbins * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28e74101e4STim J. Robbins * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29e74101e4STim J. Robbins * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30e74101e4STim J. Robbins * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31e74101e4STim J. Robbins * SUCH DAMAGE. 32e74101e4STim J. Robbins */ 33e74101e4STim J. Robbins 34e74101e4STim J. Robbins #include <sys/cdefs.h> 35e74101e4STim J. Robbins __FBSDID("$FreeBSD$"); 36e74101e4STim J. Robbins 37e74101e4STim J. Robbins #include "namespace.h" 38e74101e4STim J. Robbins #include <errno.h> 39d8f77b45SStefan Farfeleder #include <limits.h> 40e74101e4STim J. Robbins #include <stdio.h> 4124990dfaSTim J. Robbins #include <stdlib.h> 42e74101e4STim J. Robbins #include <wchar.h> 43e74101e4STim J. Robbins #include "un-namespace.h" 44e74101e4STim J. Robbins #include "libc_private.h" 45e74101e4STim J. Robbins #include "local.h" 46f9ceea9bSTim J. Robbins #include "mblocal.h" 473c87aa1dSDavid Chisnall #include "xlocale_private.h" 48e74101e4STim J. Robbins 495f147b57STim J. Robbins /* 505f147b57STim J. Robbins * Non-MT-safe version. 515f147b57STim J. Robbins */ 52e74101e4STim J. Robbins wint_t 533c87aa1dSDavid Chisnall __ungetwc(wint_t wc, FILE *fp, locale_t locale) 54e74101e4STim J. Robbins { 5524990dfaSTim J. Robbins char buf[MB_LEN_MAX]; 5624990dfaSTim J. Robbins size_t len; 573c87aa1dSDavid Chisnall struct xlocale_ctype *l = XLOCALE_CTYPE(locale); 58e74101e4STim J. Robbins 5924990dfaSTim J. Robbins if (wc == WEOF) 605f147b57STim J. Robbins return (WEOF); 613c87aa1dSDavid Chisnall if ((len = l->__wcrtomb(buf, wc, &fp->_mbstate)) == (size_t)-1) { 626180233fSTim J. Robbins fp->_flags |= __SERR; 635f147b57STim J. Robbins return (WEOF); 646180233fSTim J. Robbins } 6524990dfaSTim J. Robbins while (len-- != 0) 6692603416STim J. Robbins if (__ungetc((unsigned char)buf[len], fp) == EOF) 675f147b57STim J. Robbins return (WEOF); 6824990dfaSTim J. Robbins 6924990dfaSTim J. Robbins return (wc); 705f147b57STim J. Robbins } 7192603416STim J. Robbins 725f147b57STim J. Robbins /* 735f147b57STim J. Robbins * MT-safe version. 745f147b57STim J. Robbins */ 755f147b57STim J. Robbins wint_t 763c87aa1dSDavid Chisnall ungetwc_l(wint_t wc, FILE *fp, locale_t locale) 775f147b57STim J. Robbins { 785f147b57STim J. Robbins wint_t r; 793c87aa1dSDavid Chisnall FIX_LOCALE(locale); 805f147b57STim J. Robbins 81fda0a14fSKonstantin Belousov FLOCKFILE_CANCELSAFE(fp); 825f147b57STim J. Robbins ORIENT(fp, 1); 833c87aa1dSDavid Chisnall r = __ungetwc(wc, fp, locale); 84fda0a14fSKonstantin Belousov FUNLOCKFILE_CANCELSAFE(); 855f147b57STim J. Robbins 865f147b57STim J. Robbins return (r); 87e74101e4STim J. Robbins } 883c87aa1dSDavid Chisnall wint_t 893c87aa1dSDavid Chisnall ungetwc(wint_t wc, FILE *fp) 903c87aa1dSDavid Chisnall { 913c87aa1dSDavid Chisnall return ungetwc_l(wc, fp, __get_locale()); 923c87aa1dSDavid Chisnall } 93