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build/util/version.sh
David Oberhollenzer 7e1857c35a Fix check_version_simple for newer versions of bash
Apparently the variable substitution no longer works inside '', breaking
the check_update script.

Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
2019-07-07 14:40:36 +02:00

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get_version_field() {
local field=$(echo "$1" | cut -d. -f$2 | sed 's/^0*//')
if [ -z $field ]; then
field="0"
fi
case "$field" in
[a-zA-Z]) printf '%d' "'$field'" ;;
*) echo "$field" ;;
esac
}
verson_find_greatest() {
local version i v V
local found="$1"
while read version; do
for i in 1 2 3 4; do
v=$(get_version_field $version $i)
V=$(get_version_field $found $i)
[ $v -ge $V ] || break
if [ $v -gt $V ]; then
found="$version"
break
fi
done
done
if [ "$found" != "$1" ]; then
echo "$found"
fi
}
check_update_simple() {
local url="$1"
local prefix="$2"
local suffix="$3"
curl --silent -L "$url" | grep -o ">$prefix-[0-9.]*$suffix<" | \
sed "s/>$prefix-//g" | sed "s/.$suffix<//g" | \
verson_find_greatest "$VERSION"
}