Implement the GNU extensions of mbsnrtowcs() and wcsnrtombs(). These are
convenient when the source string isn't null-terminated. Implement the other conversion functions (mbstowcs(), mbsrtowcs(), wcstombs(), wcsrtombs()) in terms of these new functions.
This commit is contained in:
parent
5c0b01b427
commit
1949a3470f
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=132497
@ -209,6 +209,10 @@ int wcwidth(wchar_t);
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#if __BSD_VISIBLE
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#if __BSD_VISIBLE
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wchar_t *fgetwln(struct __sFILE * __restrict, size_t * __restrict);
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wchar_t *fgetwln(struct __sFILE * __restrict, size_t * __restrict);
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size_t mbsnrtowcs(wchar_t * __restrict, const char ** __restrict, size_t,
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size_t, mbstate_t * __restrict);
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size_t wcsnrtombs(char * __restrict, const wchar_t ** __restrict, size_t,
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size_t, mbstate_t * __restrict);
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size_t wcslcat(wchar_t *, const wchar_t *, size_t);
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size_t wcslcat(wchar_t *, const wchar_t *, size_t);
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size_t wcslcpy(wchar_t *, const wchar_t *, size_t);
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size_t wcslcpy(wchar_t *, const wchar_t *, size_t);
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#endif
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#endif
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@ -8,11 +8,13 @@ SRCS+= big5.c btowc.c collate.c collcmp.c euc.c fix_grouping.c frune.c \
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gb18030.c gb2312.c gbk.c isctype.c iswctype.c \
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gb18030.c gb2312.c gbk.c isctype.c iswctype.c \
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ldpart.c lmessages.c lmonetary.c lnumeric.c localeconv.c mblen.c \
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ldpart.c lmessages.c lmonetary.c lnumeric.c localeconv.c mblen.c \
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mbrlen.c \
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mbrlen.c \
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mbrtowc.c mbrune.c mbsinit.c mbsrtowcs.c mbtowc.c mbstowcs.c \
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mbrtowc.c mbrune.c mbsinit.c mbsnrtowcs.c \
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mbsrtowcs.c mbtowc.c mbstowcs.c \
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mskanji.c nextwctype.c nl_langinfo.c nomacros.c none.c rune.c \
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mskanji.c nextwctype.c nl_langinfo.c nomacros.c none.c rune.c \
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runetype.c setinvalidrune.c setlocale.c setrunelocale.c srune.c \
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runetype.c setinvalidrune.c setlocale.c setrunelocale.c srune.c \
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table.c \
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table.c \
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tolower.c toupper.c utf2.c utf8.c wcrtomb.c wcsrtombs.c wcsftime.c \
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tolower.c toupper.c utf2.c utf8.c wcrtomb.c wcsnrtombs.c \
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wcsrtombs.c wcsftime.c \
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wcstof.c wcstod.c \
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wcstof.c wcstod.c \
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wcstoimax.c wcstol.c wcstold.c wcstoll.c \
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wcstoimax.c wcstol.c wcstold.c wcstoll.c \
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wcstombs.c \
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wcstombs.c \
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@ -47,9 +49,11 @@ MLINKS+=iswalnum.3 iswalpha.3 iswalnum.3 iswascii.3 iswalnum.3 iswblank.3 \
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iswalnum.3 iswupper.3 iswalnum.3 iswxdigit.3
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iswalnum.3 iswupper.3 iswalnum.3 iswxdigit.3
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MLINKS+=isxdigit.3 ishexnumber.3
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MLINKS+=isxdigit.3 ishexnumber.3
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MLINKS+=mbrune.3 mbmb.3 mbrune.3 mbrrune.3
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MLINKS+=mbrune.3 mbmb.3 mbrune.3 mbrrune.3
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MLINKS+=mbsrtowcs.3 mbsnrtowcs.3
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MLINKS+=rune.3 fgetrune.3 rune.3 fputrune.3 rune.3 fungetrune.3 \
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MLINKS+=rune.3 fgetrune.3 rune.3 fputrune.3 rune.3 fungetrune.3 \
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rune.3 setinvalidrune.3 rune.3 setrunelocale.3 rune.3 sgetrune.3 \
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rune.3 setinvalidrune.3 rune.3 setrunelocale.3 rune.3 sgetrune.3 \
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rune.3 sputrune.3
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rune.3 sputrune.3
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MLINKS+=wcsrtombs.3 wcsnrtombs.3
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MLINKS+=wcstod.3 wcstof.3 wcstod.3 wcstold.3
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MLINKS+=wcstod.3 wcstof.3 wcstod.3 wcstold.3
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MLINKS+=wcstol.3 wcstoul.3 wcstol.3 wcstoll.3 wcstol.3 wcstoull.3 \
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MLINKS+=wcstol.3 wcstoul.3 wcstol.3 wcstoll.3 wcstol.3 wcstoull.3 \
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wcstol.3 wcstoimax.3 wcstol.3 wcstoumax.3
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wcstol.3 wcstoimax.3 wcstol.3 wcstoumax.3
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@ -37,11 +37,11 @@
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extern size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict,
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extern size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict,
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size_t, mbstate_t * __restrict);
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size_t, mbstate_t * __restrict);
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extern int (*__mbsinit)(const mbstate_t *);
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extern int (*__mbsinit)(const mbstate_t *);
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extern size_t (*__mbsrtowcs)(wchar_t * __restrict, const char ** __restrict,
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extern size_t (*__mbsnrtowcs)(wchar_t * __restrict, const char ** __restrict,
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size_t, mbstate_t * __restrict);
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size_t, size_t, mbstate_t * __restrict);
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extern size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict);
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extern size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict);
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extern size_t (*__wcsrtombs)(char * __restrict, const wchar_t ** __restrict,
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extern size_t (*__wcsnrtombs)(char * __restrict, const wchar_t ** __restrict,
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size_t, mbstate_t * __restrict);
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size_t, size_t, mbstate_t * __restrict);
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/*
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/*
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* Conversion functions for "NONE"/C/POSIX encoding.
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* Conversion functions for "NONE"/C/POSIX encoding.
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@ -49,17 +49,17 @@ extern size_t (*__wcsrtombs)(char * __restrict, const wchar_t ** __restrict,
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extern size_t _none_mbrtowc(wchar_t * __restrict, const char * __restrict,
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extern size_t _none_mbrtowc(wchar_t * __restrict, const char * __restrict,
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size_t, mbstate_t * __restrict);
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size_t, mbstate_t * __restrict);
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extern int _none_mbsinit(const mbstate_t *);
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extern int _none_mbsinit(const mbstate_t *);
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extern size_t _none_mbsrtowcs(wchar_t * __restrict, const char ** __restrict,
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extern size_t _none_mbsnrtowcs(wchar_t * __restrict, const char ** __restrict,
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size_t, mbstate_t * __restrict);
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size_t, size_t, mbstate_t * __restrict);
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extern size_t _none_wcrtomb(char * __restrict, wchar_t,
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extern size_t _none_wcrtomb(char * __restrict, wchar_t,
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mbstate_t * __restrict);
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mbstate_t * __restrict);
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extern size_t _none_wcsrtombs(char * __restrict, const wchar_t ** __restrict,
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extern size_t _none_wcsnrtombs(char * __restrict, const wchar_t ** __restrict,
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size_t, mbstate_t * __restrict);
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size_t, size_t, mbstate_t * __restrict);
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extern size_t __mbsrtowcs_std(wchar_t * __restrict, const char ** __restrict,
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extern size_t __mbsnrtowcs_std(wchar_t * __restrict, const char ** __restrict,
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size_t, mbstate_t * __restrict);
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size_t, size_t, mbstate_t * __restrict);
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extern size_t __wcsrtombs_std(char * __restrict, const wchar_t ** __restrict,
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extern size_t __wcsnrtombs_std(char * __restrict, const wchar_t ** __restrict,
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size_t, mbstate_t * __restrict);
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size_t, size_t, mbstate_t * __restrict);
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/*
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/*
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* Rune emulation functions.
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* Rune emulation functions.
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91
lib/libc/locale/mbsnrtowcs.c
Normal file
91
lib/libc/locale/mbsnrtowcs.c
Normal file
@ -0,0 +1,91 @@
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/*-
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* Copyright (c) 2002-2004 Tim J. Robbins.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <errno.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include "mblocal.h"
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size_t
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mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src,
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size_t nms, size_t len, mbstate_t * __restrict ps)
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{
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static mbstate_t mbs;
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if (ps == NULL)
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ps = &mbs;
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return (__mbsnrtowcs(dst, src, nms, len, ps));
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}
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size_t
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__mbsnrtowcs_std(wchar_t * __restrict dst, const char ** __restrict src,
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size_t nms, size_t len, mbstate_t * __restrict ps)
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{
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const char *s;
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size_t nchr;
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wchar_t wc;
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size_t nb;
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s = *src;
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nchr = 0;
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if (dst == NULL) {
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for (;;) {
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if ((nb = __mbrtowc(&wc, s, nms, ps)) == (size_t)-1)
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/* Invalid sequence - mbrtowc() sets errno. */
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return ((size_t)-1);
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else if (nb == 0 || nb == (size_t)-2)
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return (nchr);
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s += nb;
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nms -= nb;
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nchr++;
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}
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/*NOTREACHED*/
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}
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while (len-- > 0) {
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if ((nb = __mbrtowc(dst, s, nms, ps)) == (size_t)-1) {
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*src = s;
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return ((size_t)-1);
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} else if (nb == (size_t)-2) {
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*src = s + nms;
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return (nchr);
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} else if (nb == 0) {
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*src = NULL;
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return (nchr);
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}
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s += nb;
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nms -= nb;
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nchr++;
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dst++;
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}
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*src = s;
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return (nchr);
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}
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@ -23,11 +23,12 @@
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.\" SUCH DAMAGE.
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.\" SUCH DAMAGE.
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.\"
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.\"
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.\" $FreeBSD$
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.\" $FreeBSD$
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.Dd April 8, 2004
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.Dd July 21, 2004
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.Dt MBSRTOWCS 3
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.Dt MBSRTOWCS 3
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.Os
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.Os
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.Sh NAME
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.Sh NAME
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.Nm mbsrtowcs
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.Nm mbsrtowcs ,
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.Nm mbsnrtowcs
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.Nd "convert a character string to a wide-character string (restartable)"
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.Nd "convert a character string to a wide-character string (restartable)"
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.Sh LIBRARY
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.Sh LIBRARY
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.Lb libc
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.Lb libc
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@ -38,6 +39,11 @@
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.Fa "wchar_t * restrict dst" "const char ** restrict src" "size_t len"
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.Fa "wchar_t * restrict dst" "const char ** restrict src" "size_t len"
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.Fa "mbstate_t * restrict ps"
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.Fa "mbstate_t * restrict ps"
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.Fc
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.Fc
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.Ft size_t
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.Fo mbsnrtowcs
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.Fa "wchar_t * restrict dst" "const char ** restrict src" "size_t nms"
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.Fa "size_t len" "mbstate_t * restrict ps"
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.Fc
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.Sh DESCRIPTION
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.Sh DESCRIPTION
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The
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The
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.Fn mbsrtowcs
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.Fn mbsrtowcs
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@ -82,10 +88,21 @@ uses an internal, static
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.Vt mbstate_t
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.Vt mbstate_t
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object, which is initialized to the initial conversion state
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object, which is initialized to the initial conversion state
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at program startup.
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at program startup.
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.Pp
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The
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.Fn mbsnrtowcs
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function behaves identically to
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.Fn mbsrtowcs ,
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except that conversion stops after reading at most
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.Fa nms
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bytes from the buffer pointed to by
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.Fa src .
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.Sh RETURN VALUES
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.Sh RETURN VALUES
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The
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The
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.Fn mbsrtowcs
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.Fn mbsrtowcs
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function returns the number of wide characters stored in
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and
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.Fn mbsnrtowcs
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functions return the number of wide characters stored in
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the array pointed to by
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the array pointed to by
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.Fa dst
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.Fa dst
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if successful, otherwise it returns
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if successful, otherwise it returns
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@ -93,7 +110,9 @@ if successful, otherwise it returns
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.Sh ERRORS
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.Sh ERRORS
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The
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The
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.Fn mbsrtowcs
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.Fn mbsrtowcs
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function will fail if:
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and
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.Fn mbsnrtowcs
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functions will fail if:
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.Bl -tag -width Er
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.Bl -tag -width Er
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.It Bq Er EILSEQ
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.It Bq Er EILSEQ
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An invalid multibyte character sequence was encountered.
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An invalid multibyte character sequence was encountered.
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@ -110,3 +129,7 @@ The
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.Fn mbsrtowcs
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.Fn mbsrtowcs
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function conforms to
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function conforms to
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.St -isoC-99 .
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.St -isoC-99 .
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.Pp
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The
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.Fn mbsnrtowcs
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function is an extension to the standard.
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@ -41,46 +41,5 @@ mbsrtowcs(wchar_t * __restrict dst, const char ** __restrict src, size_t len,
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if (ps == NULL)
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if (ps == NULL)
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ps = &mbs;
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ps = &mbs;
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return (__mbsrtowcs(dst, src, len, ps));
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return (__mbsnrtowcs(dst, src, SIZE_T_MAX, len, ps));
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}
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size_t
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__mbsrtowcs_std(wchar_t * __restrict dst, const char ** __restrict src,
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size_t len, mbstate_t * __restrict ps)
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{
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const char *s;
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size_t nchr;
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wchar_t wc;
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int nb;
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s = *src;
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nchr = 0;
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if (dst == NULL) {
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for (;;) {
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if ((nb = (int)__mbrtowc(&wc, s, MB_CUR_MAX, ps)) < 0)
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/* Invalid sequence - mbrtowc() sets errno. */
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return ((size_t)-1);
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else if (nb == 0)
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return (nchr);
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s += nb;
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nchr++;
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}
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/*NOTREACHED*/
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}
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while (len-- > 0) {
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if ((nb = (int)__mbrtowc(dst, s, MB_CUR_MAX, ps)) < 0) {
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*src = s;
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return ((size_t)-1);
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} else if (nb == 0) {
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*src = NULL;
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return (nchr);
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}
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s += nb;
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nchr++;
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dst++;
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}
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*src = s;
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return (nchr);
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}
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}
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@ -27,6 +27,7 @@
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#include <sys/cdefs.h>
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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__FBSDID("$FreeBSD$");
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#include <limits.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include <wchar.h>
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#include "mblocal.h"
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#include "mblocal.h"
|
||||||
@ -38,5 +39,5 @@ mbstowcs(wchar_t * __restrict pwcs, const char * __restrict s, size_t n)
|
|||||||
mbstate_t mbs;
|
mbstate_t mbs;
|
||||||
|
|
||||||
mbs = initial;
|
mbs = initial;
|
||||||
return (__mbsrtowcs(pwcs, &s, n, &mbs));
|
return (__mbsnrtowcs(pwcs, &s, SIZE_T_MAX, n, &mbs));
|
||||||
}
|
}
|
||||||
|
@ -55,11 +55,12 @@ int _none_init(_RuneLocale *);
|
|||||||
size_t _none_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t,
|
size_t _none_mbrtowc(wchar_t * __restrict, const char * __restrict, size_t,
|
||||||
mbstate_t * __restrict);
|
mbstate_t * __restrict);
|
||||||
int _none_mbsinit(const mbstate_t *);
|
int _none_mbsinit(const mbstate_t *);
|
||||||
size_t _none_mbsrtowcs(wchar_t * __restrict, const char ** __restrict,
|
size_t _none_mbsnrtowcs(wchar_t * __restrict dst,
|
||||||
size_t, mbstate_t * __restrict);
|
const char ** __restrict src, size_t nms, size_t len,
|
||||||
|
mbstate_t * __restrict ps __unused);
|
||||||
size_t _none_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict);
|
size_t _none_wcrtomb(char * __restrict, wchar_t, mbstate_t * __restrict);
|
||||||
size_t _none_wcsrtombs(char * __restrict, const wchar_t ** __restrict,
|
size_t _none_wcsnrtombs(char * __restrict, const wchar_t ** __restrict,
|
||||||
size_t, mbstate_t * __restrict);
|
size_t, size_t, mbstate_t * __restrict);
|
||||||
|
|
||||||
int
|
int
|
||||||
_none_init(_RuneLocale *rl)
|
_none_init(_RuneLocale *rl)
|
||||||
@ -67,9 +68,9 @@ _none_init(_RuneLocale *rl)
|
|||||||
|
|
||||||
__mbrtowc = _none_mbrtowc;
|
__mbrtowc = _none_mbrtowc;
|
||||||
__mbsinit = _none_mbsinit;
|
__mbsinit = _none_mbsinit;
|
||||||
__mbsrtowcs = _none_mbsrtowcs;
|
__mbsnrtowcs = _none_mbsnrtowcs;
|
||||||
__wcrtomb = _none_wcrtomb;
|
__wcrtomb = _none_wcrtomb;
|
||||||
__wcsrtombs = _none_wcsrtombs;
|
__wcsnrtombs = _none_wcsnrtombs;
|
||||||
_CurrentRuneLocale = rl;
|
_CurrentRuneLocale = rl;
|
||||||
__mb_cur_max = 1;
|
__mb_cur_max = 1;
|
||||||
return(0);
|
return(0);
|
||||||
@ -119,18 +120,20 @@ _none_wcrtomb(char * __restrict s, wchar_t wc,
|
|||||||
}
|
}
|
||||||
|
|
||||||
size_t
|
size_t
|
||||||
_none_mbsrtowcs(wchar_t * __restrict dst, const char ** __restrict src,
|
_none_mbsnrtowcs(wchar_t * __restrict dst, const char ** __restrict src,
|
||||||
size_t len, mbstate_t * __restrict ps __unused)
|
size_t nms, size_t len, mbstate_t * __restrict ps __unused)
|
||||||
{
|
{
|
||||||
const char *s;
|
const char *s;
|
||||||
size_t nchr;
|
size_t nchr;
|
||||||
|
|
||||||
if (dst == NULL)
|
if (dst == NULL) {
|
||||||
return (strlen(*src));
|
s = memchr(*src, '\0', nms);
|
||||||
|
return (s != NULL ? s - *src : nms);
|
||||||
|
}
|
||||||
|
|
||||||
s = *src;
|
s = *src;
|
||||||
nchr = 0;
|
nchr = 0;
|
||||||
while (len-- > 0) {
|
while (len-- > 0 && nms-- > 0) {
|
||||||
if ((*dst++ = (unsigned char)*s++) == L'\0') {
|
if ((*dst++ = (unsigned char)*s++) == L'\0') {
|
||||||
*src = NULL;
|
*src = NULL;
|
||||||
return (nchr);
|
return (nchr);
|
||||||
@ -142,14 +145,14 @@ _none_mbsrtowcs(wchar_t * __restrict dst, const char ** __restrict src,
|
|||||||
}
|
}
|
||||||
|
|
||||||
size_t
|
size_t
|
||||||
_none_wcsrtombs(char * __restrict dst, const wchar_t ** __restrict src,
|
_none_wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src,
|
||||||
size_t len, mbstate_t * __restrict ps __unused)
|
size_t nwc, size_t len, mbstate_t * __restrict ps __unused)
|
||||||
{
|
{
|
||||||
const wchar_t *s;
|
const wchar_t *s;
|
||||||
size_t nchr;
|
size_t nchr;
|
||||||
|
|
||||||
if (dst == NULL) {
|
if (dst == NULL) {
|
||||||
for (s = *src; *s != L'\0'; s++) {
|
for (s = *src; nwc > 0 && *s != L'\0'; s++, nwc--) {
|
||||||
if (*s < 0 || *s > UCHAR_MAX) {
|
if (*s < 0 || *s > UCHAR_MAX) {
|
||||||
errno = EILSEQ;
|
errno = EILSEQ;
|
||||||
return ((size_t)-1);
|
return ((size_t)-1);
|
||||||
@ -160,7 +163,7 @@ _none_wcsrtombs(char * __restrict dst, const wchar_t ** __restrict src,
|
|||||||
|
|
||||||
s = *src;
|
s = *src;
|
||||||
nchr = 0;
|
nchr = 0;
|
||||||
while (len-- > 0) {
|
while (len-- > 0 && nwc-- > 0) {
|
||||||
if (*s < 0 || *s > UCHAR_MAX) {
|
if (*s < 0 || *s > UCHAR_MAX) {
|
||||||
errno = EILSEQ;
|
errno = EILSEQ;
|
||||||
return ((size_t)-1);
|
return ((size_t)-1);
|
||||||
|
@ -100,10 +100,11 @@ __setrunelocale(const char *encoding)
|
|||||||
static size_t (*Cached__wcrtomb)(char * __restrict, wchar_t,
|
static size_t (*Cached__wcrtomb)(char * __restrict, wchar_t,
|
||||||
mbstate_t * __restrict);
|
mbstate_t * __restrict);
|
||||||
static int (*Cached__mbsinit)(const mbstate_t *);
|
static int (*Cached__mbsinit)(const mbstate_t *);
|
||||||
static size_t (*Cached__mbsrtowcs)(wchar_t * __restrict,
|
static size_t (*Cached__mbsnrtowcs)(wchar_t * __restrict,
|
||||||
const char ** __restrict, size_t, mbstate_t * __restrict);
|
const char ** __restrict, size_t, size_t, mbstate_t * __restrict);
|
||||||
static size_t (*Cached__wcsrtombs)(char * __restrict,
|
static size_t (*Cached__wcsnrtombs)(char * __restrict,
|
||||||
const wchar_t ** __restrict, size_t, mbstate_t * __restrict);
|
const wchar_t ** __restrict, size_t, size_t,
|
||||||
|
mbstate_t * __restrict);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* The "C" and "POSIX" locale are always here.
|
* The "C" and "POSIX" locale are always here.
|
||||||
@ -113,9 +114,9 @@ __setrunelocale(const char *encoding)
|
|||||||
__mb_cur_max = 1;
|
__mb_cur_max = 1;
|
||||||
__mbrtowc = _none_mbrtowc;
|
__mbrtowc = _none_mbrtowc;
|
||||||
__mbsinit = _none_mbsinit;
|
__mbsinit = _none_mbsinit;
|
||||||
__mbsrtowcs = _none_mbsrtowcs;
|
__mbsnrtowcs = _none_mbsnrtowcs;
|
||||||
__wcrtomb = _none_wcrtomb;
|
__wcrtomb = _none_wcrtomb;
|
||||||
__wcsrtombs = _none_wcsrtombs;
|
__wcsnrtombs = _none_wcsnrtombs;
|
||||||
return (0);
|
return (0);
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -128,9 +129,9 @@ __setrunelocale(const char *encoding)
|
|||||||
__mb_cur_max = Cached__mb_cur_max;
|
__mb_cur_max = Cached__mb_cur_max;
|
||||||
__mbrtowc = Cached__mbrtowc;
|
__mbrtowc = Cached__mbrtowc;
|
||||||
__mbsinit = Cached__mbsinit;
|
__mbsinit = Cached__mbsinit;
|
||||||
__mbsrtowcs = Cached__mbsrtowcs;
|
__mbsnrtowcs = Cached__mbsnrtowcs;
|
||||||
__wcrtomb = Cached__wcrtomb;
|
__wcrtomb = Cached__wcrtomb;
|
||||||
__wcsrtombs = Cached__wcsrtombs;
|
__wcsnrtombs = Cached__wcsnrtombs;
|
||||||
return (0);
|
return (0);
|
||||||
}
|
}
|
||||||
|
|
||||||
@ -156,9 +157,9 @@ __setrunelocale(const char *encoding)
|
|||||||
|
|
||||||
__mbrtowc = NULL;
|
__mbrtowc = NULL;
|
||||||
__mbsinit = NULL;
|
__mbsinit = NULL;
|
||||||
__mbsrtowcs = __mbsrtowcs_std;
|
__mbsnrtowcs = __mbsnrtowcs_std;
|
||||||
__wcrtomb = NULL;
|
__wcrtomb = NULL;
|
||||||
__wcsrtombs = __wcsrtombs_std;
|
__wcsnrtombs = __wcsnrtombs_std;
|
||||||
rl->__sputrune = __emulated_sputrune;
|
rl->__sputrune = __emulated_sputrune;
|
||||||
rl->__sgetrune = __emulated_sgetrune;
|
rl->__sgetrune = __emulated_sgetrune;
|
||||||
if (strcmp(rl->__encoding, "NONE") == 0)
|
if (strcmp(rl->__encoding, "NONE") == 0)
|
||||||
@ -192,9 +193,9 @@ __setrunelocale(const char *encoding)
|
|||||||
Cached__mb_cur_max = __mb_cur_max;
|
Cached__mb_cur_max = __mb_cur_max;
|
||||||
Cached__mbrtowc = __mbrtowc;
|
Cached__mbrtowc = __mbrtowc;
|
||||||
Cached__mbsinit = __mbsinit;
|
Cached__mbsinit = __mbsinit;
|
||||||
Cached__mbsrtowcs = __mbsrtowcs;
|
Cached__mbsnrtowcs = __mbsnrtowcs;
|
||||||
Cached__wcrtomb = __wcrtomb;
|
Cached__wcrtomb = __wcrtomb;
|
||||||
Cached__wcsrtombs = __wcsrtombs;
|
Cached__wcsnrtombs = __wcsnrtombs;
|
||||||
(void)strcpy(ctype_encoding, encoding);
|
(void)strcpy(ctype_encoding, encoding);
|
||||||
} else
|
} else
|
||||||
free(rl);
|
free(rl);
|
||||||
|
@ -255,9 +255,9 @@ int __mb_cur_max = 1;
|
|||||||
size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict, size_t,
|
size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict, size_t,
|
||||||
mbstate_t * __restrict) = _none_mbrtowc;
|
mbstate_t * __restrict) = _none_mbrtowc;
|
||||||
int (*__mbsinit)(const mbstate_t *) = _none_mbsinit;
|
int (*__mbsinit)(const mbstate_t *) = _none_mbsinit;
|
||||||
size_t (*__mbsrtowcs)(wchar_t * __restrict, const char ** __restrict,
|
size_t (*__mbsnrtowcs)(wchar_t * __restrict, const char ** __restrict,
|
||||||
size_t, mbstate_t * __restrict) = _none_mbsrtowcs;
|
size_t, size_t, mbstate_t * __restrict) = _none_mbsnrtowcs;
|
||||||
size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict) =
|
size_t (*__wcrtomb)(char * __restrict, wchar_t, mbstate_t * __restrict) =
|
||||||
_none_wcrtomb;
|
_none_wcrtomb;
|
||||||
size_t (*__wcsrtombs)(char * __restrict, const wchar_t ** __restrict,
|
size_t (*__wcsnrtombs)(char * __restrict, const wchar_t ** __restrict,
|
||||||
size_t, mbstate_t * __restrict) = _none_wcsrtombs;
|
size_t, size_t, mbstate_t * __restrict) = _none_wcsnrtombs;
|
||||||
|
111
lib/libc/locale/wcsnrtombs.c
Normal file
111
lib/libc/locale/wcsnrtombs.c
Normal file
@ -0,0 +1,111 @@
|
|||||||
|
/*-
|
||||||
|
* Copyright (c) 2002-2004 Tim J. Robbins.
|
||||||
|
* 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.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <sys/cdefs.h>
|
||||||
|
__FBSDID("$FreeBSD$");
|
||||||
|
|
||||||
|
#include <limits.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <wchar.h>
|
||||||
|
#include "mblocal.h"
|
||||||
|
|
||||||
|
size_t
|
||||||
|
wcsnrtombs(char * __restrict dst, const wchar_t ** __restrict src, size_t nwc,
|
||||||
|
size_t len, mbstate_t * __restrict ps)
|
||||||
|
{
|
||||||
|
static mbstate_t mbs;
|
||||||
|
|
||||||
|
if (ps == NULL)
|
||||||
|
ps = &mbs;
|
||||||
|
return (__wcsnrtombs(dst, src, nwc, len, ps));
|
||||||
|
}
|
||||||
|
|
||||||
|
size_t
|
||||||
|
__wcsnrtombs_std(char * __restrict dst, const wchar_t ** __restrict src,
|
||||||
|
size_t nwc, size_t len, mbstate_t * __restrict ps)
|
||||||
|
{
|
||||||
|
mbstate_t mbsbak;
|
||||||
|
char buf[MB_LEN_MAX];
|
||||||
|
const wchar_t *s;
|
||||||
|
size_t nbytes;
|
||||||
|
size_t nb;
|
||||||
|
|
||||||
|
s = *src;
|
||||||
|
nbytes = 0;
|
||||||
|
|
||||||
|
if (dst == NULL) {
|
||||||
|
while (nwc-- > 0) {
|
||||||
|
if ((nb = __wcrtomb(buf, *s, ps)) == (size_t)-1)
|
||||||
|
/* Invalid character - wcrtomb() sets errno. */
|
||||||
|
return ((size_t)-1);
|
||||||
|
else if (*s == L'\0')
|
||||||
|
break;
|
||||||
|
s++;
|
||||||
|
nbytes += nb;
|
||||||
|
}
|
||||||
|
return (nbytes + nb - 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
while (len > 0 && nwc-- > 0) {
|
||||||
|
if (len > (size_t)MB_CUR_MAX) {
|
||||||
|
/* Enough space to translate in-place. */
|
||||||
|
if ((nb = (int)__wcrtomb(dst, *s, ps)) < 0) {
|
||||||
|
*src = s;
|
||||||
|
return ((size_t)-1);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
/*
|
||||||
|
* May not be enough space; use temp. buffer.
|
||||||
|
*
|
||||||
|
* We need to save a copy of the conversion state
|
||||||
|
* here so we can restore it if the multibyte
|
||||||
|
* character is too long for the buffer.
|
||||||
|
*/
|
||||||
|
mbsbak = *ps;
|
||||||
|
if ((nb = (int)__wcrtomb(buf, *s, ps)) < 0) {
|
||||||
|
*src = s;
|
||||||
|
return ((size_t)-1);
|
||||||
|
}
|
||||||
|
if (nb > (int)len) {
|
||||||
|
/* MB sequence for character won't fit. */
|
||||||
|
*ps = mbsbak;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
memcpy(dst, buf, nb);
|
||||||
|
}
|
||||||
|
if (*s == L'\0') {
|
||||||
|
*src = NULL;
|
||||||
|
return (nbytes + nb - 1);
|
||||||
|
}
|
||||||
|
s++;
|
||||||
|
dst += nb;
|
||||||
|
len -= nb;
|
||||||
|
nbytes += nb;
|
||||||
|
}
|
||||||
|
*src = s;
|
||||||
|
return (nbytes);
|
||||||
|
}
|
@ -24,11 +24,12 @@
|
|||||||
.\"
|
.\"
|
||||||
.\" $FreeBSD$
|
.\" $FreeBSD$
|
||||||
.\"
|
.\"
|
||||||
.Dd April 8, 2004
|
.Dd July 21, 2004
|
||||||
.Dt WCSRTOMBS 3
|
.Dt WCSRTOMBS 3
|
||||||
.Os
|
.Os
|
||||||
.Sh NAME
|
.Sh NAME
|
||||||
.Nm wcsrtombs
|
.Nm wcsrtombs ,
|
||||||
|
.Nm wcsnrtombs
|
||||||
.Nd "convert a wide-character string to a character string (restartable)"
|
.Nd "convert a wide-character string to a character string (restartable)"
|
||||||
.Sh LIBRARY
|
.Sh LIBRARY
|
||||||
.Lb libc
|
.Lb libc
|
||||||
@ -39,6 +40,11 @@
|
|||||||
.Fa "char * restrict dst" "const wchar_t ** restrict src"
|
.Fa "char * restrict dst" "const wchar_t ** restrict src"
|
||||||
.Fa "size_t len" "mbstate_t * restrict ps"
|
.Fa "size_t len" "mbstate_t * restrict ps"
|
||||||
.Fc
|
.Fc
|
||||||
|
.Ft size_t
|
||||||
|
.Fo wcsnrtombs
|
||||||
|
.Fa "char * restrict dst" "const wchar_t ** restrict src" "size_t nwc"
|
||||||
|
.Fa "size_t len" "mbstate_t * restrict ps"
|
||||||
|
.Fc
|
||||||
.Sh DESCRIPTION
|
.Sh DESCRIPTION
|
||||||
The
|
The
|
||||||
.Fn wcsrtombs
|
.Fn wcsrtombs
|
||||||
@ -82,10 +88,21 @@ uses an internal, static
|
|||||||
.Vt mbstate_t
|
.Vt mbstate_t
|
||||||
object, which is initialized to the initial conversion state
|
object, which is initialized to the initial conversion state
|
||||||
at program startup.
|
at program startup.
|
||||||
|
.Pp
|
||||||
|
The
|
||||||
|
.Fn wcsnrtombs
|
||||||
|
function behaves identically to
|
||||||
|
.Fn wcsrtombs ,
|
||||||
|
except that conversion stops after reading at most
|
||||||
|
.Fa nwc
|
||||||
|
characters from the buffer pointed to by
|
||||||
|
.Fa src .
|
||||||
.Sh RETURN VALUES
|
.Sh RETURN VALUES
|
||||||
The
|
The
|
||||||
.Fn wcsrtombs
|
.Fn wcsrtombs
|
||||||
function returns the number of bytes stored in
|
and
|
||||||
|
.Fn wcsnrtombs
|
||||||
|
functions return the number of bytes stored in
|
||||||
the array pointed to by
|
the array pointed to by
|
||||||
.Fa dst
|
.Fa dst
|
||||||
(not including any terminating null), if successful, otherwise it returns
|
(not including any terminating null), if successful, otherwise it returns
|
||||||
@ -93,7 +110,9 @@ the array pointed to by
|
|||||||
.Sh ERRORS
|
.Sh ERRORS
|
||||||
The
|
The
|
||||||
.Fn wcsrtombs
|
.Fn wcsrtombs
|
||||||
function will fail if:
|
and
|
||||||
|
.Fn wcsnrtombs
|
||||||
|
functions will fail if:
|
||||||
.Bl -tag -width Er
|
.Bl -tag -width Er
|
||||||
.It Bq Er EILSEQ
|
.It Bq Er EILSEQ
|
||||||
An invalid wide character was encountered.
|
An invalid wide character was encountered.
|
||||||
@ -109,3 +128,7 @@ The
|
|||||||
.Fn wcsrtombs
|
.Fn wcsrtombs
|
||||||
function conforms to
|
function conforms to
|
||||||
.St -isoC-99 .
|
.St -isoC-99 .
|
||||||
|
.Pp
|
||||||
|
The
|
||||||
|
.Fn wcsnrtombs
|
||||||
|
function is an extension to the standard.
|
||||||
|
@ -41,71 +41,5 @@ wcsrtombs(char * __restrict dst, const wchar_t ** __restrict src, size_t len,
|
|||||||
|
|
||||||
if (ps == NULL)
|
if (ps == NULL)
|
||||||
ps = &mbs;
|
ps = &mbs;
|
||||||
return (__wcsrtombs(dst, src, len, ps));
|
return (__wcsnrtombs(dst, src, SIZE_T_MAX, len, ps));
|
||||||
}
|
|
||||||
|
|
||||||
size_t
|
|
||||||
__wcsrtombs_std(char * __restrict dst, const wchar_t ** __restrict src,
|
|
||||||
size_t len, mbstate_t * __restrict ps)
|
|
||||||
{
|
|
||||||
mbstate_t mbsbak;
|
|
||||||
char buf[MB_LEN_MAX];
|
|
||||||
const wchar_t *s;
|
|
||||||
size_t nbytes;
|
|
||||||
int nb;
|
|
||||||
|
|
||||||
s = *src;
|
|
||||||
nbytes = 0;
|
|
||||||
|
|
||||||
if (dst == NULL) {
|
|
||||||
for (;;) {
|
|
||||||
if ((nb = (int)__wcrtomb(buf, *s, ps)) < 0)
|
|
||||||
/* Invalid character - wcrtomb() sets errno. */
|
|
||||||
return ((size_t)-1);
|
|
||||||
else if (*s == L'\0')
|
|
||||||
return (nbytes + nb - 1);
|
|
||||||
s++;
|
|
||||||
nbytes += nb;
|
|
||||||
}
|
|
||||||
/*NOTREACHED*/
|
|
||||||
}
|
|
||||||
|
|
||||||
while (len > 0) {
|
|
||||||
if (len > (size_t)MB_CUR_MAX) {
|
|
||||||
/* Enough space to translate in-place. */
|
|
||||||
if ((nb = (int)__wcrtomb(dst, *s, ps)) < 0) {
|
|
||||||
*src = s;
|
|
||||||
return ((size_t)-1);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
/*
|
|
||||||
* May not be enough space; use temp. buffer.
|
|
||||||
*
|
|
||||||
* We need to save a copy of the conversion state
|
|
||||||
* here so we can restore it if the multibyte
|
|
||||||
* character is too long for the buffer.
|
|
||||||
*/
|
|
||||||
mbsbak = *ps;
|
|
||||||
if ((nb = (int)__wcrtomb(buf, *s, ps)) < 0) {
|
|
||||||
*src = s;
|
|
||||||
return ((size_t)-1);
|
|
||||||
}
|
|
||||||
if (nb > (int)len) {
|
|
||||||
/* MB sequence for character won't fit. */
|
|
||||||
*ps = mbsbak;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
memcpy(dst, buf, nb);
|
|
||||||
}
|
|
||||||
if (*s == L'\0') {
|
|
||||||
*src = NULL;
|
|
||||||
return (nbytes + nb - 1);
|
|
||||||
}
|
|
||||||
s++;
|
|
||||||
dst += nb;
|
|
||||||
len -= nb;
|
|
||||||
nbytes += nb;
|
|
||||||
}
|
|
||||||
*src = s;
|
|
||||||
return (nbytes);
|
|
||||||
}
|
}
|
||||||
|
@ -27,6 +27,7 @@
|
|||||||
#include <sys/cdefs.h>
|
#include <sys/cdefs.h>
|
||||||
__FBSDID("$FreeBSD$");
|
__FBSDID("$FreeBSD$");
|
||||||
|
|
||||||
|
#include <limits.h>
|
||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
#include <wchar.h>
|
#include <wchar.h>
|
||||||
#include "mblocal.h"
|
#include "mblocal.h"
|
||||||
@ -38,5 +39,5 @@ wcstombs(char * __restrict s, const wchar_t * __restrict pwcs, size_t n)
|
|||||||
mbstate_t mbs;
|
mbstate_t mbs;
|
||||||
|
|
||||||
mbs = initial;
|
mbs = initial;
|
||||||
return (__wcsrtombs(s, &pwcs, n, &mbs));
|
return (__wcsnrtombs(s, &pwcs, SIZE_T_MAX, n, &mbs));
|
||||||
}
|
}
|
||||||
|
@ -29,6 +29,7 @@ __FBSDID("$FreeBSD$");
|
|||||||
|
|
||||||
#include "namespace.h"
|
#include "namespace.h"
|
||||||
#include <errno.h>
|
#include <errno.h>
|
||||||
|
#include <limits.h>
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include <wchar.h>
|
#include <wchar.h>
|
||||||
#include "un-namespace.h"
|
#include "un-namespace.h"
|
||||||
@ -53,7 +54,7 @@ fputws(const wchar_t * __restrict ws, FILE * __restrict fp)
|
|||||||
uio.uio_iovcnt = 1;
|
uio.uio_iovcnt = 1;
|
||||||
iov.iov_base = buf;
|
iov.iov_base = buf;
|
||||||
do {
|
do {
|
||||||
nbytes = __wcsrtombs(buf, &ws, sizeof(buf),
|
nbytes = __wcsnrtombs(buf, &ws, SIZE_T_MAX, sizeof(buf),
|
||||||
&fp->_extra->mbstate);
|
&fp->_extra->mbstate);
|
||||||
if (nbytes == (size_t)-1)
|
if (nbytes == (size_t)-1)
|
||||||
goto error;
|
goto error;
|
||||||
|
Loading…
Reference in New Issue
Block a user