1*62f08720SJoerg Sonnenberger /* $NetBSD: fgetwln.c,v 1.1 2005/05/14 23:51:02 christos Exp $ */ 2*62f08720SJoerg Sonnenberger /* $DragonFly: src/lib/libc/stdio/fgetwln.c,v 1.1 2005/07/25 00:37:41 joerg Exp $ */ 3*62f08720SJoerg Sonnenberger 4*62f08720SJoerg Sonnenberger /*- 5*62f08720SJoerg Sonnenberger * Copyright (c) 2002-2004 Tim J. Robbins. 6*62f08720SJoerg Sonnenberger * All rights reserved. 7*62f08720SJoerg Sonnenberger * 8*62f08720SJoerg Sonnenberger * Redistribution and use in source and binary forms, with or without 9*62f08720SJoerg Sonnenberger * modification, are permitted provided that the following conditions 10*62f08720SJoerg Sonnenberger * are met: 11*62f08720SJoerg Sonnenberger * 1. Redistributions of source code must retain the above copyright 12*62f08720SJoerg Sonnenberger * notice, this list of conditions and the following disclaimer. 13*62f08720SJoerg Sonnenberger * 2. Redistributions in binary form must reproduce the above copyright 14*62f08720SJoerg Sonnenberger * notice, this list of conditions and the following disclaimer in the 15*62f08720SJoerg Sonnenberger * documentation and/or other materials provided with the distribution. 16*62f08720SJoerg Sonnenberger * 17*62f08720SJoerg Sonnenberger * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18*62f08720SJoerg Sonnenberger * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*62f08720SJoerg Sonnenberger * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*62f08720SJoerg Sonnenberger * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21*62f08720SJoerg Sonnenberger * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*62f08720SJoerg Sonnenberger * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*62f08720SJoerg Sonnenberger * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*62f08720SJoerg Sonnenberger * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*62f08720SJoerg Sonnenberger * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*62f08720SJoerg Sonnenberger * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*62f08720SJoerg Sonnenberger * SUCH DAMAGE. 28*62f08720SJoerg Sonnenberger */ 29*62f08720SJoerg Sonnenberger 30*62f08720SJoerg Sonnenberger #include "namespace.h" 31*62f08720SJoerg Sonnenberger #include <stdio.h> 32*62f08720SJoerg Sonnenberger #include <wchar.h> 33*62f08720SJoerg Sonnenberger #include "un-namespace.h" 34*62f08720SJoerg Sonnenberger 35*62f08720SJoerg Sonnenberger #include "libc_private.h" 36*62f08720SJoerg Sonnenberger #include "local.h" 37*62f08720SJoerg Sonnenberger #include "priv_stdio.h" 38*62f08720SJoerg Sonnenberger 39*62f08720SJoerg Sonnenberger wchar_t * 40*62f08720SJoerg Sonnenberger fgetwln(FILE * __restrict fp, size_t *lenp) 41*62f08720SJoerg Sonnenberger { 42*62f08720SJoerg Sonnenberger wint_t wc; 43*62f08720SJoerg Sonnenberger size_t len; 44*62f08720SJoerg Sonnenberger 45*62f08720SJoerg Sonnenberger FLOCKFILE(fp); 46*62f08720SJoerg Sonnenberger _SET_ORIENTATION(fp, 1); 47*62f08720SJoerg Sonnenberger 48*62f08720SJoerg Sonnenberger len = 0; 49*62f08720SJoerg Sonnenberger while ((wc = __fgetwc_unlock(fp)) != WEOF) { 50*62f08720SJoerg Sonnenberger #define GROW 512 51*62f08720SJoerg Sonnenberger if (len * sizeof(wchar_t) >= fp->_lb._size && 52*62f08720SJoerg Sonnenberger __slbexpand(fp, (len + GROW) * sizeof(wchar_t))) 53*62f08720SJoerg Sonnenberger goto error; 54*62f08720SJoerg Sonnenberger *((wchar_t *)(void *)fp->_lb._base + len++) = wc; 55*62f08720SJoerg Sonnenberger if (wc == L'\n') 56*62f08720SJoerg Sonnenberger break; 57*62f08720SJoerg Sonnenberger } 58*62f08720SJoerg Sonnenberger if (len == 0) 59*62f08720SJoerg Sonnenberger goto error; 60*62f08720SJoerg Sonnenberger 61*62f08720SJoerg Sonnenberger FUNLOCKFILE(fp); 62*62f08720SJoerg Sonnenberger *lenp = len; 63*62f08720SJoerg Sonnenberger return ((wchar_t *)(void *)fp->_lb._base); 64*62f08720SJoerg Sonnenberger 65*62f08720SJoerg Sonnenberger error: 66*62f08720SJoerg Sonnenberger FUNLOCKFILE(fp); 67*62f08720SJoerg Sonnenberger *lenp = 0; 68*62f08720SJoerg Sonnenberger return (NULL); 69*62f08720SJoerg Sonnenberger } 70