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|
#!/bin/sh
PREFIX=
. "$PREFIX/lib/libalpine.sh"
zroot=/usr/share/zoneinfo
show_tz_list() {
local i z= list=
local path="$zroot/$1"
[ -d "$path" ] || return 1
for i in $(find $path -maxdepth 1); do
case $i in
*.tab|*/) continue;;
esac
if [ -d "$i" ]; then
z="$z ${i##*/}/"
else
z="$z ${i##*/}"
fi
done
( cd $path && ls --color=never -Cd $z )
}
valid_tz() {
find $zroot -type f -a -not -name '*.tab' -a -not -name 'Factory' \
| xargs posixtz | sort | uniq | grep -q -w "$1"
}
if ! apk info -q -e tzdata; then
apk add -q tzdata && apkdel="tzdata" || exit 1
fi
zonepath=$(cat /etc/TZ 2>/dev/null)
[ -z "$zonepath" ] && zonepath="UTC"
while true; do
echo -n "Which timezone are you in? ('?' for list) [$zonepath] "
default_read zonepath "$zonepath"
case "$zonepath" in
"") continue;;
"?") show_tz_list; continue;;
esac
while [ -d "$zroot/$zonepath" ]; do
local zone=
echo -n "What sub-timezone of '$zonepath' are you in? ('?' for list)"
default_read zone
case "$zone" in
"?") show_tz_list "$zonepath"; continue;;
esac
zonepath="$zonepath/$zone"
done
TZ=
if valid_tz "$zonepath"; then
TZ="$zonepath"
elif [ -f "$zroot/$zonepath" ]; then
TZ=$(posixtz "$zroot/$zonepath") \
|| echo "Failed to convert '$zroot/$zonepath' to POSIX TZ"
fi
if [ -n "$TZ" ]; then
echo $TZ > /etc/TZ || rm -f /etc/TZ
break
fi
echo "'$zonepath' is not a vaild timezone on this system"
done
if [ -n "$apkdel" ]; then
apk del -q $apkdel
fi
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