| Elliott Hughes | 01ae00f | 2014-04-29 16:28:56 -0700 | [diff] [blame] | 1 | /* $OpenBSD: vswscanf.c,v 1.2 2012/12/05 23:20:01 deraadt Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1990, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Donn Seeley at UUNET Technologies, Inc. |
| 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 | * 4. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #include <limits.h> |
| 36 | #include <stdarg.h> |
| 37 | #include <stdio.h> |
| 38 | #include <stdlib.h> |
| 39 | #include <string.h> |
| 40 | #include <wchar.h> |
| 41 | #include "local.h" |
| 42 | |
| 43 | static int eofread(void *, char *, int); |
| 44 | |
| 45 | static int |
| 46 | eofread(void *cookie, char *buf, int len) |
| 47 | { |
| 48 | return (0); |
| 49 | } |
| 50 | |
| 51 | int |
| 52 | vswscanf(const wchar_t * __restrict str, const wchar_t * __restrict fmt, |
| 53 | __va_list ap) |
| 54 | { |
| 55 | mbstate_t mbs; |
| 56 | FILE f; |
| 57 | struct __sfileext fext; |
| 58 | char *mbstr; |
| 59 | size_t len, mlen; |
| 60 | int r; |
| 61 | const wchar_t *strp; |
| 62 | |
| 63 | /* |
| 64 | * XXX Convert the wide character string to multibyte, which |
| 65 | * __vfwscanf() will convert back to wide characters. |
| 66 | */ |
| 67 | len = wcslen(str) * MB_CUR_MAX; |
| 68 | if ((mbstr = malloc(len + 1)) == NULL) |
| 69 | return (EOF); |
| 70 | bzero(&mbs, sizeof(mbs)); |
| 71 | strp = str; |
| 72 | if ((mlen = wcsrtombs(mbstr, &strp, len, &mbs)) == (size_t)-1) { |
| 73 | free(mbstr); |
| 74 | return (EOF); |
| 75 | } |
| 76 | if (mlen == len) |
| 77 | mbstr[len] = '\0'; |
| 78 | _FILEEXT_SETUP(&f, &fext); |
| 79 | f._flags = __SRD; |
| 80 | f._bf._base = f._p = (unsigned char *)mbstr; |
| 81 | f._bf._size = f._r = mlen; |
| 82 | f._read = eofread; |
| 83 | f._lb._base = NULL; |
| 84 | r = __vfwscanf(&f, fmt, ap); |
| 85 | free(mbstr); |
| 86 | |
| 87 | return (r); |
| 88 | } |