[type/__locale_system] Implement "proper" version comparison

Proper in the sense that it can handle all numeric version numbers even if they
are not floating point (e.g. 16.04.6).
This commit is contained in:
Dennis Camera 2020-08-02 20:17:00 +02:00
parent 885d5a58f4
commit 71710fa00a

View file

@ -24,7 +24,20 @@
# Configure system-wide locale by modifying i18n file.
#
bccmp() { test "$(bc)" -gt 0; }
version_ge() {
awk -F '[^0-9.]' -v target="${1:?}" '
function max(x, y) { return x > y ? x : y }
BEGIN {
getline
nx = split($1, x, ".")
ny = split(target, y, ".")
for (i = 1; i <= max(nx, ny); ++i) {
diff = int(x[i]) - int(y[i])
if (diff == 0) continue
exit (diff < 0)
}
}'
}
key=$__object_id
@ -43,8 +56,7 @@ os=$(cat "$__global/explorer/os")
case $os
in
debian)
os_version=$(cat "${__global}/explorer/os_version")
if printf '%f >= 4\n' "${os_version}" | bccmp
if version_ge 4 <"${__global}/explorer/os_version"
then
# Debian 4 (etch) and later
locale_conf="/etc/default/locale"
@ -56,8 +68,7 @@ in
locale_conf="/etc/default/locale"
;;
ubuntu)
os_version=$(cat "${__global}/explorer/os_version")
if printf '%f >= 6.10\n' "${os_version}" | bccmp
if version_ge 6.10 <"${__global}/explorer/os_version"
then
# Ubuntu 6.10 (edgy) and later
locale_conf="/etc/default/locale"
@ -71,7 +82,7 @@ in
centos|redhat|scientific)
# shellcheck source=/dev/null
version_id=$(. "${__global}/explorer/os_release" && echo "${VERSION_ID:-0}")
if printf '%f >= 7\n' "${version_id}" | bccmp
if echo "${version_id}" | version_ge 7
then
locale_conf="/etc/locale.conf"
else
@ -81,7 +92,7 @@ in
fedora)
# shellcheck source=/dev/null
version_id=$(. "${__global}/explorer/os_release" && echo "${VERSION_ID:-0}")
if printf '%f >= 18\n' "${version_id}" | bccmp
if echo "${version_id}" | version_ge 18
then
locale_conf="/etc/locale.conf"
quote_value=false
@ -116,8 +127,7 @@ in
locale_conf="/etc/default/init"
locale_conf_group="sys"
os_version=$(cat "${__global}/explorer/os_version")
if printf '%f >= 5.11\n' "${os_version}" | bccmp
if version_ge 5.11 <"${__global}/explorer/os_version"
then
# mode on Oracle Solaris 11 is actually 0444,
# but the write bit makes sense, IMO