| /* $OpenBSD: vswscanf.c,v 1.2 2012/12/05 23:20:01 deraadt Exp $ */ |
| |
| /*- |
| * Copyright (c) 1990, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * Donn Seeley at UUNET Technologies, Inc. |
| * |
| * 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. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. |
| */ |
| |
| #include <limits.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <wchar.h> |
| #include "local.h" |
| |
| static int eofread(void *, char *, int); |
| |
| static int |
| eofread(void *cookie, char *buf, int len) |
| { |
| return (0); |
| } |
| |
| int |
| vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, |
| __va_list ap) |
| { |
| mbstate_t mbs; |
| FILE f; |
| struct __sfileext fext; |
| char *mbstr; |
| size_t len, mlen; |
| int r; |
| const wchar_t *strp; |
| |
| /* |
| * XXX Convert the wide character string to multibyte, which |
| * __vfwscanf() will convert back to wide characters. |
| */ |
| len = wcslen(str) * MB_CUR_MAX; |
| if ((mbstr = malloc(len + 1)) == NULL) |
| return (EOF); |
| bzero(&mbs, sizeof(mbs)); |
| strp = str; |
| if ((mlen = wcsrtombs(mbstr, &strp, len, &mbs)) == (size_t)-1) { |
| free(mbstr); |
| return (EOF); |
| } |
| if (mlen == len) |
| mbstr[len] = '\0'; |
| _FILEEXT_SETUP(&f, &fext); |
| f._flags = __SRD; |
| f._bf._base = f._p = (unsigned char *)mbstr; |
| f._bf._size = f._r = mlen; |
| f._read = eofread; |
| f._lb._base = NULL; |
| r = __vfwscanf(&f, fmt, ap); |
| free(mbstr); |
| |
| return (r); |
| } |