Commit 77c4d0f6 authored by Michal Berger's avatar Michal Berger Committed by Tomasz Zawadzki
Browse files

scripts/common: Add functions for comparing version strings 



This is introduced mainly for convenience. Examples of supported usage:

eq 0xf.1 15.1 # true
gt 1.1.00 2 # false
le 2.33.4 2.44.02 # true
ge 03.03.03 3.3.01 # true
lt 1 0 # false
ge 4.19.0-6-amd64 4.10.0-6-amd64 # true
neq 0.0 0 # false

Change-Id: Iac05fce03bfe95f85ab1c8a7c24c4553ffc6776a
Signed-off-by: default avatarMichal Berger <michalx.berger@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4808


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
parent dc45a73d

scripts/common.sh

+48 −0
Original line number Diff line number Diff line
@@ -235,3 +235,51 @@ function nvme_in_userspace() { 
	((${#bdfs[@]})) || return 1

	printf '%s\n' "${bdfs[@]}"

}



cmp() {

	local ver1 ver1_l

	local ver2 ver2_l



	IFS=".-:" read -ra ver1 <<< "$1"

	IFS=".-:" read -ra ver2 <<< "$3"

	local op=$2



	ver1_l=${#ver1[@]}

	ver2_l=${#ver2[@]}



	local lt=0 gt=0 eq=0 v

	case "$op" in

		"<") : $((eq = gt = 1)) ;;

		">") : $((eq = lt = 1)) ;;

		"<=") : $((gt = 1)) ;;

		">=") : $((lt = 1)) ;;

		"==") : $((lt = gt = 1)) ;;

	esac



	decimal() (

		local d=${1,,}

		if [[ $d =~ ^[0-9]+$ ]]; then

			echo $((10#$d))

		elif [[ $d =~ ^0x || $d =~ ^[a-f0-9]+$ ]]; then

			d=${d/0x/}

			echo $((0x$d))

		else

			echo 0

		fi

	)



	for ((v = 0; v < (ver1_l > ver2_l ? ver1_l : ver2_l); v++)); do

		ver1[v]=$(decimal "${ver1[v]}")

		ver2[v]=$(decimal "${ver2[v]}")

		((ver1[v] > ver2[v])) && return "$gt"

		((ver1[v] < ver2[v])) && return "$lt"

	done

	[[ ${ver1[*]} == "${ver2[*]}" ]] && return "$eq"

}



lt() { cmp "$1" "<" "$2"; }

gt() { cmp "$1" ">" "$2"; }

le() { cmp "$1" "<=" "$2"; }

ge() { cmp "$1" ">=" "$2"; }

eq() { cmp "$1" "==" "$2"; }

neq() { ! eq "$1" "$2"; }