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 <rune.h> 33e74101e4STim J. Robbins #include <stdio.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 wchar_t * 40e74101e4STim J. Robbins fgetws(wchar_t *__restrict ws, int n, FILE *__restrict fp) 41e74101e4STim J. Robbins { 42e74101e4STim J. Robbins wchar_t *wsp; 43e74101e4STim J. Robbins long r; 44e74101e4STim J. Robbins 45e74101e4STim J. Robbins ORIENTLOCK(fp, 1); 46e74101e4STim J. Robbins 47e74101e4STim J. Robbins if (n <= 0) 48e74101e4STim J. Robbins return (NULL); 49e74101e4STim J. Robbins 50e74101e4STim J. Robbins wsp = ws; 51e74101e4STim J. Robbins while (n-- > 1) { 52e74101e4STim J. Robbins /* XXX Inefficient */ 53e74101e4STim J. Robbins if ((r = fgetrune(fp)) == _INVALID_RUNE) { 54e74101e4STim J. Robbins errno = EILSEQ; 55e74101e4STim J. Robbins return (NULL); 56e74101e4STim J. Robbins } 57e74101e4STim J. Robbins if (r == EOF) { 58e74101e4STim J. Robbins if (wsp == ws) 59e74101e4STim J. Robbins /* EOF/error, no characters read yet. */ 60e74101e4STim J. Robbins return (NULL); 61e74101e4STim J. Robbins break; 62e74101e4STim J. Robbins } 63e74101e4STim J. Robbins *wsp++ = (wchar_t)r; 64e74101e4STim J. Robbins if (r == L'\n') 65e74101e4STim J. Robbins break; 66e74101e4STim J. Robbins } 67e74101e4STim J. Robbins *wsp++ = L'\0'; 68e74101e4STim J. Robbins 69e74101e4STim J. Robbins return (ws); 70e74101e4STim J. Robbins } 71