Re: [gentoo-dev] Re: [gentoo-commits] gentoo-x86 commit in net-misc/openvpn: ChangeLog openvpn-2.1.3.ebuild

[Mike Frysinger]

here's what i'll commit to eutils.eclass:

# @FUNCTION: path_exists
# @USAGE: [-a|-o] <paths>
# @DESCRIPTION:
# Check if the specified paths exist.  Works for all types of paths
# (files/dirs/etc...).  The -a and -o flags control the requirements
# of the paths.  They correspond to "and" and "or" logic.  So the -a
# flag means all the paths must exist while the -o flag means at least
# one of the paths must exist.  The default behavior is "and".  If no
# paths are specified, then the return value is "false".
path_exists() {
	local opt=$1
	[[ ${opt} == -[ao] ]] && shift || opt="-a"

	# no paths -> return false
	# same behavior as: [[ -e "" ]]
	[[ $# -eq 0 ]] && return 1

	local p r=0
	for p in "$@" ; do
		[[ -e ${p} ]]
		: $(( r += $? ))
	done

	case ${opt} in
		-a) return $(( r != 0 )) ;;
		-o) return $(( r == $# )) ;;
	esac
}
-mike