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# From http://stackoverflow.com/a/4025065/2043481
# Returns 0 when equal, 1 when $1 > $2, 2 otherwise
version_compare () {
if [[ "$1" == "$2" ]]; then
return 0
fi
local IFS=".-_"
local i ver1=($1) ver2=($2)
# fill empty fields in ver1 with zeros
for ((i=${#ver1[@]}; i<${#ver2[@]}; i++)); do
ver1[i]=0
done
for ((i=0; i<${#ver1[@]}; i++)); do
if [[ -z "${ver2[i]}" ]]; then
# fill empty fields in ver2 with zeros
ver2[i]=0
fi
if ((10#${ver1[i]} > 10#${ver2[i]})); then
return 1
fi
if ((10#${ver1[i]} < 10#${ver2[i]})); then
return 2
fi
done
return 0
}
version_ge () {
version_compare "$1" "$2"
local RET=$?
[ "$RET" == "2" ] && return 1
return 0
}
version_le () {
version_compare "$1" "$2"
local RET=$?
[ "$RET" == "1" ] && return 1
return 0
}
version_gt () {
version_compare "$1" "$2"
local RET=$?
[ "$RET" == "1" ] && return 0
return 1
}
version_lt () {
version_compare "$1" "$2"
local RET=$?
[ "$RET" == "2" ] && return 0
return 1
}
version_eq () {
version_compare "$1" "$2"
return $?
}
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