1e74101e4STim J. Robbins /*- 2e74101e4STim J. Robbins * Copyright (c) 2002 Tim J. Robbins. 3e74101e4STim J. Robbins * All rights reserved. 4e74101e4STim J. Robbins * 5e74101e4STim J. Robbins * Redistribution and use in source and binary forms, with or without 6e74101e4STim J. Robbins * modification, are permitted provided that the following conditions 7e74101e4STim J. Robbins * are met: 8e74101e4STim J. Robbins * 1. Redistributions of source code must retain the above copyright 9e74101e4STim J. Robbins * notice, this list of conditions and the following disclaimer. 10e74101e4STim J. Robbins * 2. Redistributions in binary form must reproduce the above copyright 11e74101e4STim J. Robbins * notice, this list of conditions and the following disclaimer in the 12e74101e4STim J. Robbins * documentation and/or other materials provided with the distribution. 13e74101e4STim J. Robbins * 14e74101e4STim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15e74101e4STim J. Robbins * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16e74101e4STim J. Robbins * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17e74101e4STim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18e74101e4STim J. Robbins * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19e74101e4STim J. Robbins * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20e74101e4STim J. Robbins * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21e74101e4STim J. Robbins * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22e74101e4STim J. Robbins * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23e74101e4STim J. Robbins * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24e74101e4STim J. Robbins * SUCH DAMAGE. 25e74101e4STim J. Robbins */ 26e74101e4STim J. Robbins 27e74101e4STim J. Robbins #include <sys/cdefs.h> 28e74101e4STim J. Robbins __FBSDID("$FreeBSD$"); 29e74101e4STim J. Robbins 30e74101e4STim J. Robbins #include "namespace.h" 31e74101e4STim J. Robbins #include <errno.h> 32e74101e4STim J. Robbins #include <stdio.h> 3324990dfaSTim J. Robbins #include <stdlib.h> 34e74101e4STim J. Robbins #include <wchar.h> 35e74101e4STim J. Robbins #include "un-namespace.h" 36e74101e4STim J. Robbins #include "libc_private.h" 37e74101e4STim J. Robbins #include "local.h" 38e74101e4STim J. Robbins 39e74101e4STim J. Robbins wint_t 40e74101e4STim J. Robbins fgetwc(FILE *fp) 41e74101e4STim J. Robbins { 4224990dfaSTim J. Robbins char buf[MB_LEN_MAX]; 4324990dfaSTim J. Robbins mbstate_t mbs; 4424990dfaSTim J. Robbins size_t n, nconv; 4524990dfaSTim J. Robbins int c; 4624990dfaSTim J. Robbins wchar_t wc; 47e74101e4STim J. Robbins 48e74101e4STim J. Robbins ORIENTLOCK(fp, 1); 49e74101e4STim J. Robbins 5024990dfaSTim J. Robbins n = 0; 5124990dfaSTim J. Robbins while (n < MB_CUR_MAX) { 5224990dfaSTim J. Robbins if ((c = fgetc(fp)) == EOF) { 5324990dfaSTim J. Robbins if (n == 0) 5424990dfaSTim J. Robbins return (WEOF); 5524990dfaSTim J. Robbins break; 5624990dfaSTim J. Robbins } 5724990dfaSTim J. Robbins buf[n++] = (char)c; 5824990dfaSTim J. Robbins memset(&mbs, 0, sizeof(mbs)); 5924990dfaSTim J. Robbins nconv = mbrtowc(&wc, buf, n, &mbs); 6024990dfaSTim J. Robbins if (nconv == n) 61e74101e4STim J. Robbins return (wc); 6224990dfaSTim J. Robbins else if (nconv == 0) 6324990dfaSTim J. Robbins return (L'\0'); 64bddc6280STim J. Robbins else if (nconv == (size_t)-1) 6524990dfaSTim J. Robbins break; 6624990dfaSTim J. Robbins } 6724990dfaSTim J. Robbins 6824990dfaSTim J. Robbins while (n-- != 0) 6924990dfaSTim J. Robbins ungetc((unsigned char)buf[n], fp); 7024990dfaSTim J. Robbins errno = EILSEQ; 7124990dfaSTim J. Robbins return (WEOF); 72e74101e4STim J. Robbins } 73