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git.saurik.com Git - apple/libc.git/blob - stdio/FreeBSD/fgetws.c
2 * Copyright (c) 2002-2004 Tim J. Robbins.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: src/lib/libc/stdio/fgetws.c,v 1.8 2009/11/25 04:45:45 wollman Exp $");
30 #include "xlocale_private.h"
32 #include "namespace.h"
37 #include "un-namespace.h"
38 #include "libc_private.h"
43 fgetws_l(wchar_t * __restrict ws
, int n
, FILE * __restrict fp
, locale_t loc
)
49 struct __xlocale_st_runelocale
*rl
;
50 size_t (*__mbsnrtowcs
)(wchar_t * __restrict
, const char ** __restrict
, size_t, size_t, __darwin_mbstate_t
* __restrict
, locale_t
);
52 NORMALIZE_LOCALE(loc
);
54 __mbsnrtowcs
= rl
->__mbsnrtowcs
;
63 if (fp
->_r
<= 0 && __srefill(fp
))
68 src
= (const char *)fp
->_p
;
69 nl
= memchr(fp
->_p
, '\n', fp
->_r
);
70 nconv
= __mbsnrtowcs(wsp
, &src
,
71 nl
!= NULL
? (nl
- fp
->_p
+ 1) : fp
->_r
,
72 n
- 1, &fp
->_mbstate
, loc
);
73 if (nconv
== (size_t)-1)
74 /* Conversion error */
78 * We hit a null byte. Increment the character count,
79 * since mbsnrtowcs()'s return value doesn't include
80 * the terminating null, then resume conversion
84 src
= memchr(fp
->_p
, '\0', fp
->_r
);
87 fp
->_r
-= (unsigned char *)src
- fp
->_p
;
88 fp
->_p
= (unsigned char *)src
;
91 } while (wsp
[-1] != L
'\n' && n
> 1 && (fp
->_r
> 0 ||
96 if (!rl
->__mbsinit(&fp
->_mbstate
, loc
))
97 /* Incomplete character */
110 fgetws(wchar_t * __restrict ws
, int n
, FILE * __restrict fp
)
112 return fgetws_l(ws
, n
, fp
, __current_locale());