| Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame^] | 1 | /*-
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| 2 | * Copyright (c) 1990, 1993
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| 3 | * The Regents of the University of California. All rights reserved.
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| 4 | *
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| 5 | * This code is derived from software contributed to Berkeley by
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| 6 | * Donn Seeley at UUNET Technologies, Inc.
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| 7 | *
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| 8 | * Redistribution and use in source and binary forms, with or without
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| 9 | * modification, are permitted provided that the following conditions
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| 10 | * are met:
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| 11 | * 1. Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | * 3. All advertising materials mentioning features or use of this software
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| 17 | * must display the following acknowledgement:
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| 18 | * This product includes software developed by the University of
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| 19 | * California, Berkeley and its contributors.
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| 20 | * 4. Neither the name of the University nor the names of its contributors
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| 21 | * may be used to endorse or promote products derived from this software
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| 22 | * without specific prior written permission.
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| 23 | *
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| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 34 | * SUCH DAMAGE.
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| 35 |
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| 36 | FreeBSD: src/lib/libc/stdio/vswscanf.c,v 1.3 2004/04/07 09:55:05 tjr Exp
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| 37 | NetBSD: vswscanf.c,v 1.3 2005/12/02 13:51:22 yamt Exp
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| 38 | */
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| 39 | #include <LibConfig.h>
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| 40 | #include <sys/EfiCdefs.h>
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| 41 |
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| 42 | #include <limits.h>
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| 43 | #include <stdarg.h>
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| 44 | #include <stdio.h>
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| 45 | #include <stdlib.h>
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| 46 | #include <string.h>
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| 47 | #include <wchar.h>
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| 48 | #include <sys/types.h>
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| 49 | #include "reentrant.h"
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| 50 | #include "local.h"
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| 51 |
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| 52 | static int eofread(void *, char *, int);
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| 53 |
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| 54 | static int
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| 55 | /*ARGSUSED*/
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| 56 | eofread(void *cookie, char *buf, int len)
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| 57 | {
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| 58 | return (0);
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| 59 | }
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| 60 |
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| 61 | int
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| 62 | vswscanf(
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| 63 | const wchar_t * __restrict str,
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| 64 | const wchar_t * __restrict fmt,
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| 65 | va_list ap
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| 66 | )
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| 67 | {
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| 68 | static const mbstate_t initial = { 0 };
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| 69 | mbstate_t mbs;
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| 70 | FILE f;
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| 71 | char *mbstr;
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| 72 | size_t mlen;
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| 73 | int r;
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| 74 | const wchar_t *rstr = str;
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| 75 | struct __sfileext fext = { { 0 } };
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| 76 |
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| 77 | /*
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| 78 | * XXX Convert the wide character string to multibyte, which
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| 79 | * __vfwscanf() will convert back to wide characters.
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| 80 | */
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| 81 | if ((mbstr = malloc(wcslen(str) * MB_CUR_MAX + 1)) == NULL)
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| 82 | return (EOF);
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| 83 | mbs = initial;
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| 84 | if ((mlen = wcsrtombs(mbstr, &rstr, SIZE_T_MAX, &mbs)) == (size_t)-1) {
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| 85 | free(mbstr);
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| 86 | return (EOF);
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| 87 | }
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| 88 | _FILEEXT_SETUP(&f, &fext);
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| 89 | f._file = -1;
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| 90 | f._flags = __SRD;
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| 91 | f._bf._base = f._p = (unsigned char *)mbstr;
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| 92 | f._bf._size = f._r = (int)mlen;
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| 93 | f._read = eofread;
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| 94 | _UB(&f)._base = NULL;
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| 95 | f._lb._base = NULL;
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| 96 | r = __vfwscanf_unlocked(&f, fmt, ap);
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| 97 | free(mbstr);
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| 98 |
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| 99 | return (r);
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| 100 | }
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