kakoune/rc/autorestore.kak

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## If set to true, backups will be removed as soon as they have been restored
decl bool autorestore_purge_restored true
## Insert the content of the backup file into the current buffer, if a suitable one is found
def autorestore-restore-buffer -docstring "Restore the backup for the current file if it exists" %{
%sh{
buffer_basename="${kak_bufname##*/}"
buffer_dirname=$(dirname "${kak_bufname}")
## Find the name of the latest backup created for the buffer that was open
## The backup file has to have been last modified more recently than the file we are editing
latest_backup_path=$(find "${buffer_dirname}" -maxdepth 1 -type f -readable -newer "${kak_bufname}" -name "\.${buffer_basename}\.kak\.*" -printf '%A@/%p\n' 2>/dev/null \
| sort -n -t. -k1 | sed -nr 's/^[^\/]+\///;$p')
test ! -z "${latest_backup_path}" || {
echo "eval -draft %{ autorestore-purge-backups }";
exit;
}
## Replace the content of the buffer with the content of the backup file
echo "
exec -draft %{ %d!cat<space>${latest_backup_path}<ret>d }
echo -color Information Backup restored
"
## If the backup file has to be removed, issue the command once
## the current buffer has been saved
## If the autorestore_purge_restored option has been unset right after the
## buffer was restored, do not remove the backup
echo "
hook -group autorestore global BufWritePost (.+/)?${kak_bufname} %{
nop %sh{
if [ \"\${kak_opt_autorestore_purge_restored,,}\" = yes \
-o \"\${kak_opt_autorestore_purge_restored,,}\" = true ]; then
rm -f '${latest_backup_path}'
fi
}
}
"
}
}
## Remove all the backups that have been created for the current buffer
def autorestore-purge-backups -docstring "Remove all the backups of the current buffer" %{
nop %sh{
buffer_basename="${kak_bufname##*/}"
buffer_dirname=$(dirname "${kak_bufname}")
find "${buffer_dirname}" -type f -readable -name "\.${buffer_basename}\.kak\.*" -delete 2>/dev/null
}
echo -color 'Information Backup files removed'
}
## If for some reason, backup files need to be ignored
def autorestore-disable -docstring "Disable automatic backup recovering" %{
rmhooks global autorestore
}
hook -group autorestore global BufCreate .* %{ autorestore-restore-buffer }