1 /*- 2 * Copyright (c) 2002-2004 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Copyright (c) 2011 The FreeBSD Foundation 6 * All rights reserved. 7 * Portions of this software were developed by David Chisnall 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include "namespace.h" 36 #include <stdio.h> 37 #include <wchar.h> 38 #include "un-namespace.h" 39 #include "libc_private.h" 40 #include "local.h" 41 #include "xlocale_private.h" 42 43 wchar_t * 44 fgetwln_l(FILE * __restrict fp, size_t *lenp, locale_t locale) 45 { 46 wint_t wc; 47 size_t len; 48 FIX_LOCALE(locale); 49 50 FLOCKFILE(fp); 51 ORIENT(fp, 1); 52 53 len = 0; 54 while ((wc = __fgetwc(fp, locale)) != WEOF) { 55 #define GROW 512 56 if (len * sizeof(wchar_t) >= fp->_lb._size && 57 __slbexpand(fp, (len + GROW) * sizeof(wchar_t))) 58 goto error; 59 *((wchar_t *)fp->_lb._base + len++) = wc; 60 if (wc == L'\n') 61 break; 62 } 63 if (len == 0) 64 goto error; 65 66 FUNLOCKFILE(fp); 67 *lenp = len; 68 return ((wchar_t *)fp->_lb._base); 69 70 error: 71 FUNLOCKFILE(fp); 72 *lenp = 0; 73 return (NULL); 74 } 75 wchar_t * 76 fgetwln(FILE * __restrict fp, size_t *lenp) 77 { 78 return fgetwln_l(fp, lenp, __get_locale()); 79 } 80