From owner-freebsd-arch  Wed Aug 21  0:49: 5 2002
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Date: Wed, 21 Aug 2002 00:48:51 -0700
From: "David O'Brien" <dev-null@NUXI.com>
To: Luigi Rizzo <rizzo@icir.org>
Cc: arch@freebsd.org
Subject: Re: ugliness in rc.* scripts
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	Luigi Rizzo <rizzo@icir.org>, arch@freebsd.org
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On Tue, Aug 20, 2002 at 11:25:38PM -0700, Luigi Rizzo wrote:
> which is not the most desirable thing in terms of readability.

Agreed.

> This would be easily fixed by moving /usr/bin/tr to /bin/tr (statically
> linked) and doing
> 
> 	tolower() {
> 	    echo `tr A-Z a-z <<_EOF
> 	$*`
> 	}
> 
> 	case `tolower ${some_config_variable}` in
> 	mixed_case_string)
> 		...

This is an interesting idea.  For boolean knobs, I'd really like to see
us use the NetBSD way:

# checkyesno var
#	Test $1 variable, and warn if not set to YES or NO.
#	Return 0 if it's "yes" (et al), nonzero otherwise.
#
checkyesno()
{
	eval _value=\$${1}
	debug "checkyesno: $1 is set to $_value."
	case $_value in

		#	"yes", "true", "on", or "1"
	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
		return 0
		;;

		#	"no", "false", "off", or "0"
	[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
		return 1
		;;
	*)
		warn "\$${1} is not set properly."
		return 1
		;;
	esac
}

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