nixos-config/scripts/br

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2022-10-18 12:37:14 -03:00
#!/bin/sh
set -e -u
end(){
rm -r -- "$(dirname -- "$namebase")"
[ $# -ne 0 ] && echo $@ >&2
exit $#
}
if [ $# -ne 0 ] ; then
for i in "$@" ; do
printf "%s\n" "$i"
done | "$0"
exit $?
fi
namebase="$(mktemp -d)/blkrn"
echo '# Modify filenames without removing any line, quitting aborts' \
> "$namebase.2"
tee -- "$namebase.1" >> "$namebase.2"
exec </dev/tty >/dev/tty ||
end 'Interactive terminal needed'
"$EDITOR" -- "$namebase.2"
sed -i -- '1d' "$namebase.2"
! diff -- "$namebase.1" "$namebase.2" &> /dev/null || end "no changes"
[ `wc -l < "$namebase.1"` -eq `wc -l < "$namebase.2"` ] || end "Wrong number of lines"
{
echo '# Please review/modify this script or empty it to do nothing'
echo 'run(){'
echo ' mkdir -p "$(dirname "$2")"'
echo ' mv -T -- "$1" "$2"'
echo '}'
while read -r l1 <&3 && read -r l2 <&4; do
[ "$l1" = "$l2" ] || printf "%s\n%s\n" "$l1" "$l2"
done 3<"$namebase.1" 4<"$namebase.2" |
sed 's/\([\\"$`]\)/\\\1/g;s/^.*$/"&"/' |
xargs -d"\n" -L2 echo 'run'
} > "$namebase.sh"
"$EDITOR" -- "$namebase.sh"
sh -e -- "$namebase.sh"
end # exit normaly