1e74101e4STim J. Robbins /*- 287275e43STim J. Robbins * Copyright (c) 2002-2004 Tim J. Robbins. 3e74101e4STim J. Robbins * All rights reserved. 4e74101e4STim J. Robbins * 5*3c87aa1dSDavid Chisnall * Copyright (c) 2011 The FreeBSD Foundation 6*3c87aa1dSDavid Chisnall * All rights reserved. 7*3c87aa1dSDavid Chisnall * Portions of this software were developed by David Chisnall 8*3c87aa1dSDavid Chisnall * under sponsorship from the FreeBSD Foundation. 9*3c87aa1dSDavid Chisnall * 10e74101e4STim J. Robbins * Redistribution and use in source and binary forms, with or without 11e74101e4STim J. Robbins * modification, are permitted provided that the following conditions 12e74101e4STim J. Robbins * are met: 13e74101e4STim J. Robbins * 1. Redistributions of source code must retain the above copyright 14e74101e4STim J. Robbins * notice, this list of conditions and the following disclaimer. 15e74101e4STim J. Robbins * 2. Redistributions in binary form must reproduce the above copyright 16e74101e4STim J. Robbins * notice, this list of conditions and the following disclaimer in the 17e74101e4STim J. Robbins * documentation and/or other materials provided with the distribution. 18e74101e4STim J. Robbins * 19e74101e4STim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20e74101e4STim J. Robbins * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21e74101e4STim J. Robbins * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22e74101e4STim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23e74101e4STim J. Robbins * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24e74101e4STim J. Robbins * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25e74101e4STim J. Robbins * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26e74101e4STim J. Robbins * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27e74101e4STim J. Robbins * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28e74101e4STim J. Robbins * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29e74101e4STim J. Robbins * SUCH DAMAGE. 30e74101e4STim J. Robbins */ 31e74101e4STim J. Robbins 32e74101e4STim J. Robbins #include <sys/cdefs.h> 33e74101e4STim J. Robbins __FBSDID("$FreeBSD$"); 34e74101e4STim J. Robbins 35e74101e4STim J. Robbins #include "namespace.h" 36e74101e4STim J. Robbins #include <errno.h> 37d8f77b45SStefan Farfeleder #include <limits.h> 38e74101e4STim J. Robbins #include <stdio.h> 3924990dfaSTim J. Robbins #include <stdlib.h> 40e74101e4STim J. Robbins #include <wchar.h> 41e74101e4STim J. Robbins #include "un-namespace.h" 42e74101e4STim J. Robbins #include "libc_private.h" 43e74101e4STim J. Robbins #include "local.h" 44f9ceea9bSTim J. Robbins #include "mblocal.h" 45*3c87aa1dSDavid Chisnall #include "xlocale_private.h" 46e74101e4STim J. Robbins 475f147b57STim J. Robbins /* 485f147b57STim J. Robbins * Non-MT-safe version. 495f147b57STim J. Robbins */ 50e74101e4STim J. Robbins wint_t 51*3c87aa1dSDavid Chisnall __ungetwc(wint_t wc, FILE *fp, locale_t locale) 52e74101e4STim J. Robbins { 5324990dfaSTim J. Robbins char buf[MB_LEN_MAX]; 5424990dfaSTim J. Robbins size_t len; 55*3c87aa1dSDavid Chisnall struct xlocale_ctype *l = XLOCALE_CTYPE(locale); 56e74101e4STim J. Robbins 5724990dfaSTim J. Robbins if (wc == WEOF) 585f147b57STim J. Robbins return (WEOF); 59*3c87aa1dSDavid Chisnall if ((len = l->__wcrtomb(buf, wc, &fp->_mbstate)) == (size_t)-1) { 606180233fSTim J. Robbins fp->_flags |= __SERR; 615f147b57STim J. Robbins return (WEOF); 626180233fSTim J. Robbins } 6324990dfaSTim J. Robbins while (len-- != 0) 6492603416STim J. Robbins if (__ungetc((unsigned char)buf[len], fp) == EOF) 655f147b57STim J. Robbins return (WEOF); 6624990dfaSTim J. Robbins 6724990dfaSTim J. Robbins return (wc); 685f147b57STim J. Robbins } 6992603416STim J. Robbins 705f147b57STim J. Robbins /* 715f147b57STim J. Robbins * MT-safe version. 725f147b57STim J. Robbins */ 735f147b57STim J. Robbins wint_t 74*3c87aa1dSDavid Chisnall ungetwc_l(wint_t wc, FILE *fp, locale_t locale) 755f147b57STim J. Robbins { 765f147b57STim J. Robbins wint_t r; 77*3c87aa1dSDavid Chisnall FIX_LOCALE(locale); 785f147b57STim J. Robbins 795f147b57STim J. Robbins FLOCKFILE(fp); 805f147b57STim J. Robbins ORIENT(fp, 1); 81*3c87aa1dSDavid Chisnall r = __ungetwc(wc, fp, locale); 8292603416STim J. Robbins FUNLOCKFILE(fp); 835f147b57STim J. Robbins 845f147b57STim J. Robbins return (r); 85e74101e4STim J. Robbins } 86*3c87aa1dSDavid Chisnall wint_t 87*3c87aa1dSDavid Chisnall ungetwc(wint_t wc, FILE *fp) 88*3c87aa1dSDavid Chisnall { 89*3c87aa1dSDavid Chisnall return ungetwc_l(wc, fp, __get_locale()); 90*3c87aa1dSDavid Chisnall } 91