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kakoune/rc/tools/autorestore.kak
2019-04-08 17:05:55 -07:00

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declare-option -docstring "remove backups once they've been restored" \
bool autorestore_purge_restored true
## Insert the content of the backup file into the current buffer, if a suitable one is found
define-command autorestore-restore-buffer -docstring "Restore the backup for the current file if it exists" %{
evaluate-commands %sh{
buffer_basename="${kak_buffile##*/}"
buffer_dirname=$(dirname "${kak_buffile}")
if [ -f "${kak_buffile}" ]; then
newer=$(find "${buffer_dirname}"/".${buffer_basename}.kak."* -newer "${kak_buffile}" -exec ls -1t {} + 2>/dev/null | head -n 1)
older=$(find "${buffer_dirname}"/".${buffer_basename}.kak."* \! -newer "${kak_buffile}" -exec ls -1t {} + 2>/dev/null | head -n 1)
else
# New buffers that were never written to disk.
newer=$(ls -1t "${buffer_dirname}"/".${buffer_basename}.kak."* 2>/dev/null | head -n 1)
fi
if [ -z "${newer}" ]; then
if [ -n "${older}" ]; then
printf %s\\n "
echo -debug Old backup file(s) found: will not restore ${older} .
"
fi
exit
fi
printf %s\\n "
## Replace the content of the buffer with the content of the backup file
echo -debug Restoring file: ${newer}
execute-keys -draft %{ %d!cat<space>\"${newer}\"<ret>d }
## 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
hook -group autorestore buffer BufWritePost '${kak_buffile}' %{
nop %sh{
if [ \"\${kak_opt_autorestore_purge_restored}\" = true ];
then
rm -f \"${buffer_dirname}/.${buffer_basename}.kak.\"*
fi
}
}
"
}
}
## Remove all the backups that have been created for the current buffer
define-command autorestore-purge-backups -docstring "Remove all the backups of the current buffer" %{
evaluate-commands %sh{
[ ! -f "${kak_buffile}" ] && exit
buffer_basename="${kak_bufname##*/}"
buffer_dirname=$(dirname "${kak_bufname}")
rm -f "${buffer_dirname}/.${buffer_basename}.kak."*
printf %s\\n "
echo -markup {Information}Backup files removed.
"
}
}
## If for some reason, backup files need to be ignored
define-command autorestore-disable -docstring "Disable automatic backup recovering" %{
remove-hooks global autorestore
}
hook -group autorestore global BufCreate .* %{ autorestore-restore-buffer }