1*62f08720SJoerg Sonnenberger /* $NetBSD: fwide.c,v 1.3 2005/06/12 05:21:27 lukem Exp $ */ 2*62f08720SJoerg Sonnenberger /* $DragonFly: src/lib/libc/stdio/fwide.c,v 1.1 2005/07/25 00:37:41 joerg Exp $ */ 3*62f08720SJoerg Sonnenberger 4*62f08720SJoerg Sonnenberger /*- 5*62f08720SJoerg Sonnenberger * Copyright (c)2001 Citrus Project, 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 * $Citrus$ 30*62f08720SJoerg Sonnenberger */ 31*62f08720SJoerg Sonnenberger 32*62f08720SJoerg Sonnenberger #include "namespace.h" 33*62f08720SJoerg Sonnenberger #include <assert.h> 34*62f08720SJoerg Sonnenberger #include <stdio.h> 35*62f08720SJoerg Sonnenberger #include <wchar.h> 36*62f08720SJoerg Sonnenberger #include "un-namespace.h" 37*62f08720SJoerg Sonnenberger 38*62f08720SJoerg Sonnenberger #include "libc_private.h" 39*62f08720SJoerg Sonnenberger #include "local.h" 40*62f08720SJoerg Sonnenberger #include "priv_stdio.h" 41*62f08720SJoerg Sonnenberger 42*62f08720SJoerg Sonnenberger int 43*62f08720SJoerg Sonnenberger fwide(FILE *fp, int mode) 44*62f08720SJoerg Sonnenberger { 45*62f08720SJoerg Sonnenberger struct wchar_io_data *wcio; 46*62f08720SJoerg Sonnenberger 47*62f08720SJoerg Sonnenberger _DIAGASSERT(fp != NULL); 48*62f08720SJoerg Sonnenberger 49*62f08720SJoerg Sonnenberger /* 50*62f08720SJoerg Sonnenberger * this implementation use only -1, 0, 1 51*62f08720SJoerg Sonnenberger * for mode value. 52*62f08720SJoerg Sonnenberger * (we don't need to do this, but 53*62f08720SJoerg Sonnenberger * this can make things simpler.) 54*62f08720SJoerg Sonnenberger */ 55*62f08720SJoerg Sonnenberger if (mode > 0) 56*62f08720SJoerg Sonnenberger mode = 1; 57*62f08720SJoerg Sonnenberger else if (mode < 0) 58*62f08720SJoerg Sonnenberger mode = -1; 59*62f08720SJoerg Sonnenberger 60*62f08720SJoerg Sonnenberger FLOCKFILE(fp); 61*62f08720SJoerg Sonnenberger wcio = WCIO_GET(fp); 62*62f08720SJoerg Sonnenberger if (!wcio) 63*62f08720SJoerg Sonnenberger return 0; /* XXX */ 64*62f08720SJoerg Sonnenberger 65*62f08720SJoerg Sonnenberger if (wcio->wcio_mode == 0 && mode != 0) 66*62f08720SJoerg Sonnenberger wcio->wcio_mode = mode; 67*62f08720SJoerg Sonnenberger else 68*62f08720SJoerg Sonnenberger mode = wcio->wcio_mode; 69*62f08720SJoerg Sonnenberger FUNLOCKFILE(fp); 70*62f08720SJoerg Sonnenberger 71*62f08720SJoerg Sonnenberger return mode; 72*62f08720SJoerg Sonnenberger } 73