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Implement wcswidth()

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This commit is contained in:
Andrey A. Chernov 2002-08-19 20:46:10 +00:00
parent c5844e091c
commit f999b4ba69
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=102139
2 changed files with 66 additions and 2 deletions
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4
lib/libc/locale/Makefile.inc
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@ -10,8 +10,8 @@ SRCS+= ansi.c big5.c btowc.c collate.c collcmp.c euc.c fix_grouping.c frune.c \
mbrtowc.c mbrune.c mbsinit.c mbsrtowcs.c \
mskanji.c nl_langinfo.c nomacros.c none.c rune.c \
runetype.c setinvalidrune.c setlocale.c setrunelocale.c table.c \
tolower.c toupper.c utf2.c wcrtomb.c wcsrtombs.c wctob.c wctrans.c \
wctype.c wcwidth.c
tolower.c toupper.c utf2.c wcrtomb.c wcsrtombs.c wcswidth.c \
wctob.c wctrans.c wctype.c wcwidth.c
.if ${LIB} == "c"
MAN+= btowc.3 \

64
lib/libc/locale/wcswidth.c Normal file
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@ -0,0 +1,64 @@
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* This code is derived from software contributed to Berkeley by
* Paul Borman at Krystal Technologies.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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 <wchar.h>
int
wcswidth(const wchar_t *pwcs, size_t n)
{
size_t i;
wchar_t wc;
int len, l;
len = 0;
for (i = 0; i < n; i++) {
if ((wc = *pwcs++) == L'\0')
break;
if ((l = wcwidth(wc)) == -1)
return (-1);
len += l;
}
return (len);
}