/* $OpenBSD: fwide.c,v 1.6 2019/12/03 05:03:37 asou Exp $ */ /* $NetBSD: fwide.c,v 1.2 2003/01/18 11:29:54 thorpej Exp $ */ /*- * Copyright (c)2001 Citrus Project, * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Citrus$ */ #include #include #include "local.h" int fwide(FILE *fp, int mode) { struct wchar_io_data *wcio; /* * this implementation use only -1, 0, 1 * for mode value. * (we don't need to do this, but * this can make things simpler.) */ if (mode > 0) mode = 1; else if (mode < 0) mode = -1; FLOCKFILE(fp); wcio = WCIO_GET(fp); if (!wcio) { FUNLOCKFILE(fp); return 0; /* XXX */ } if (wcio->wcio_mode == 0 && mode != 0) wcio->wcio_mode = mode; else mode = wcio->wcio_mode; FUNLOCKFILE(fp); return mode; } DEF_STRONG(fwide);