.\" $NetBSD: pmatch.9,v 1.3 2009/10/19 18:41:09 bouyer Exp $
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.\" Copyright (c) 2003 Manuel Bouyer.
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.Dd October 12, 2003
.Dt PMATCH 9
.Os
.Sh NAME
.Nm pmatch
.Nd performs pattern matching on strings
.Sh SYNOPSIS
.In sys/systm.h
.Ft int
.Fn pmatch "const char *string" "const char *pattern" "const char **estr"
.Sh DESCRIPTION
Extract substring matching
.Fa pattern
from
.Fa string .
If not
.Dv NULL ,
.Fa estr
points to the end of the longest exact or substring match.
.Pp
.Fn pmatch
uses the following metacharacters:
.Bl -tag -width Ds
.It Li \&?
match any single character.
.It Li *
match any character 0 or more times.
.It Li \&[
define a range of characters that will match.
The range is defined by 2 characters separated by a
.Sq Li \&- .
The range definition has to end with a
.Sq Li \&] .
A
.Sq Li ^
following the
.Sq Li \&[
will negate the range.
.El
.Sh RETURN VALUES
.Fn pmatch
will return 2 for an exact match, 1 for a substring match, 0 for no match and
\-1 if an error occurs.