1e74101e4STim J. Robbins /*- 287275e43STim J. Robbins * Copyright (c) 2002-2004 Tim J. Robbins. 3e74101e4STim J. Robbins * All rights reserved. 4e74101e4STim J. Robbins * 53c87aa1dSDavid Chisnall * Copyright (c) 2011 The FreeBSD Foundation 63c87aa1dSDavid Chisnall * All rights reserved. 73c87aa1dSDavid Chisnall * Portions of this software were developed by David Chisnall 83c87aa1dSDavid Chisnall * under sponsorship from the FreeBSD Foundation. 93c87aa1dSDavid 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> 37e74101e4STim J. Robbins #include <stdio.h> 3824990dfaSTim J. Robbins #include <stdlib.h> 39e74101e4STim J. Robbins #include <wchar.h> 40e74101e4STim J. Robbins #include "un-namespace.h" 41e74101e4STim J. Robbins #include "libc_private.h" 42e74101e4STim J. Robbins #include "local.h" 43f9ceea9bSTim J. Robbins #include "mblocal.h" 443c87aa1dSDavid Chisnall #include "xlocale_private.h" 45e74101e4STim J. Robbins 468f030a44STim J. Robbins /* 478f030a44STim J. Robbins * MT-safe version. 488f030a44STim J. Robbins */ 498f030a44STim J. Robbins wint_t 503c87aa1dSDavid Chisnall fgetwc_l(FILE *fp, locale_t locale) 518f030a44STim J. Robbins { 528f030a44STim J. Robbins wint_t r; 533c87aa1dSDavid Chisnall FIX_LOCALE(locale); 548f030a44STim J. Robbins 558f030a44STim J. Robbins FLOCKFILE(fp); 568f030a44STim J. Robbins ORIENT(fp, 1); 573c87aa1dSDavid Chisnall r = __fgetwc(fp, locale); 588f030a44STim J. Robbins FUNLOCKFILE(fp); 598f030a44STim J. Robbins 608f030a44STim J. Robbins return (r); 618f030a44STim J. Robbins } 62d7af8cf1SDavid Schultz 633c87aa1dSDavid Chisnall wint_t 643c87aa1dSDavid Chisnall fgetwc(FILE *fp) 653c87aa1dSDavid Chisnall { 663c87aa1dSDavid Chisnall return fgetwc_l(fp, __get_locale()); 673c87aa1dSDavid Chisnall } 688f030a44STim J. Robbins 69fcc51917STim J. Robbins /* 70d7af8cf1SDavid Schultz * Internal (non-MPSAFE) version of fgetwc(). This version takes an 71d7af8cf1SDavid Schultz * mbstate_t argument specifying the initial conversion state. For 72d7af8cf1SDavid Schultz * wide streams, this should always be fp->_mbstate. On return, *nread 73d7af8cf1SDavid Schultz * is set to the number of bytes read. 74fcc51917STim J. Robbins */ 75fcc51917STim J. Robbins wint_t 76d7af8cf1SDavid Schultz __fgetwc_mbs(FILE *fp, mbstate_t *mbs, int *nread, locale_t locale) 770b7bc802STim J. Robbins { 7824990dfaSTim J. Robbins wchar_t wc; 79d6ed810aSTim J. Robbins size_t nconv; 803c87aa1dSDavid Chisnall struct xlocale_ctype *l = XLOCALE_CTYPE(locale); 81e74101e4STim J. Robbins 82d7af8cf1SDavid Schultz *nread = 0; 83*d34d90a8SAndrey A. Chernov if (fp->_r <= 0 && __srefill(fp)) 8424990dfaSTim J. Robbins return (WEOF); 85d6ed810aSTim J. Robbins do { 86d7af8cf1SDavid Schultz nconv = l->__mbrtowc(&wc, fp->_p, fp->_r, mbs); 87d6ed810aSTim J. Robbins if (nconv == (size_t)-1) 8824990dfaSTim J. Robbins break; 89d6ed810aSTim J. Robbins else if (nconv == (size_t)-2) 9087275e43STim J. Robbins continue; 91d6ed810aSTim J. Robbins else if (nconv == 0) { 92d6ed810aSTim J. Robbins fp->_p++; 93d6ed810aSTim J. Robbins fp->_r--; 94d7af8cf1SDavid Schultz (*nread)++; 9587275e43STim J. Robbins return (L'\0'); 96d6ed810aSTim J. Robbins } else { 97d6ed810aSTim J. Robbins fp->_p += nconv; 98d6ed810aSTim J. Robbins fp->_r -= nconv; 99d7af8cf1SDavid Schultz *nread += nconv; 10087275e43STim J. Robbins return (wc); 10124990dfaSTim J. Robbins } 102d6ed810aSTim J. Robbins } while (__srefill(fp) == 0); 1036180233fSTim J. Robbins fp->_flags |= __SERR; 10487275e43STim J. Robbins errno = EILSEQ; 10524990dfaSTim J. Robbins return (WEOF); 106e74101e4STim J. Robbins } 107