Implement wcswidth()
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=102139
@ -10,8 +10,8 @@ SRCS+= ansi.c big5.c btowc.c collate.c collcmp.c euc.c fix_grouping.c frune.c \
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mbrtowc.c mbrune.c mbsinit.c mbsrtowcs.c \
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mskanji.c nl_langinfo.c nomacros.c none.c rune.c \
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runetype.c setinvalidrune.c setlocale.c setrunelocale.c table.c \
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tolower.c toupper.c utf2.c wcrtomb.c wcsrtombs.c wctob.c wctrans.c \
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wctype.c wcwidth.c
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tolower.c toupper.c utf2.c wcrtomb.c wcsrtombs.c wcswidth.c \
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wctob.c wctrans.c wctype.c wcwidth.c
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.if ${LIB} == "c"
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MAN+= btowc.3 \
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64
lib/libc/locale/wcswidth.c
Normal file
64
lib/libc/locale/wcswidth.c
Normal file
@ -0,0 +1,64 @@
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* This code is derived from software contributed to Berkeley by
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* Paul Borman at Krystal Technologies.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <wchar.h>
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int
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wcswidth(const wchar_t *pwcs, size_t n)
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{
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size_t i;
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wchar_t wc;
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int len, l;
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len = 0;
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for (i = 0; i < n; i++) {
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if ((wc = *pwcs++) == L'\0')
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break;
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if ((l = wcwidth(wc)) == -1)
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return (-1);
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len += l;
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}
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return (len);
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}
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