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Implement rpmatch(), a semi-standard interface (as found on AIX, Tru64,

Browse Source 
GNU) for determining whether a string is an affirmative or negative
response to a question according to the current locale. This is done
by matching the response against nl_langinfo(3) items YESEXPR and NOEXPR.
This commit is contained in:
Tim J. Robbins 2005-01-09 03:55:13 +00:00
parent 5ba514bc89
commit 17ebe40096
4 changed files with 122 additions and 2 deletions
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1
include/stdlib.h
View File

@ -263,6 +263,7 @@ void qsort_r(void *, size_t, size_t, void *,
int radixsort(const unsigned char **, int, const unsigned char *,
unsigned);
void *reallocf(void *, size_t);
int rpmatch(const char *);
void setprogname(const char *);
int sradixsort(const unsigned char **, int, const unsigned char *,
unsigned);

5
lib/libc/locale/Makefile.inc
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@ -10,7 +10,8 @@ SRCS+= big5.c btowc.c collate.c collcmp.c euc.c fix_grouping.c \
mbrlen.c \
mbrtowc.c mbsinit.c mbsnrtowcs.c \
mbsrtowcs.c mbtowc.c mbstowcs.c \
mskanji.c nextwctype.c nl_langinfo.c nomacros.c none.c rune.c \
mskanji.c nextwctype.c nl_langinfo.c nomacros.c none.c rpmatch.c \
rune.c \
runetype.c setlocale.c setrunelocale.c \
table.c \
tolower.c toupper.c utf8.c wcrtomb.c wcsnrtombs.c \
@ -29,7 +30,7 @@ MAN+= btowc.3 \
mbrtowc.3 \
mbsinit.3 \
mbsrtowcs.3 mbstowcs.3 mbtowc.3 multibyte.3 \
nextwctype.3 nl_langinfo.3 \
nextwctype.3 nl_langinfo.3 rpmatch.3 \
setlocale.3 toascii.3 tolower.3 toupper.3 towlower.3 towupper.3 \
wcsftime.3 \
wcrtomb.3 \

63
lib/libc/locale/rpmatch.3 Normal file
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@ -0,0 +1,63 @@
.\"
.\" Copyright (c) 2005 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.
.\"
.\" $FreeBSD$
.\"
.Dd January 6, 2005
.Dt RPMATCH 3
.Os
.Sh NAME
.Nm rpmatch
.Nd "determine whether the response to a question is affirmative or negative"
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stdlib.h
.Ft int
.Fo rpmatch
.Fa "const char *response"
.Fc
.Sh DESCRIPTION
The
.Fn rpmatch
function determines whether the
.Fa response
argument is an affirmative or negative response to a question
according to the current locale.
.Sh RETURN VALUES
The
.Fn rpmatch
functions returns:
.Bl -tag -width indent
.It 1
The response is affirmative.
.It 0
The response is negative.
.It \&-1
The response is not recognized.
.El
.Sh SEE ALSO
.Xr nl_langinfo 3 ,
.Xr setlocale 3

55
lib/libc/locale/rpmatch.c Normal file
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@ -0,0 +1,55 @@
/*-
* Copyright (c) 2004-2005 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 <langinfo.h>
#include <regex.h>
#include <stdlib.h>
int
rpmatch(const char *response)
{
regex_t yes, no;
int ret;
if (regcomp(&yes, nl_langinfo(YESEXPR), REG_EXTENDED|REG_NOSUB) != 0)
return (-1);
if (regcomp(&no, nl_langinfo(NOEXPR), REG_EXTENDED|REG_NOSUB) != 0) {
regfree(&yes);
return (-1);
}
if (regexec(&yes, response, 0, NULL, 0) == 0)
ret = 1;
else if (regexec(&no, response, 0, NULL, 0) == 0)
ret = 0;
else
ret = -1;
regfree(&yes);
regfree(&no);
return (ret);
}