kakoune/rc/extra/autorestore.kak
2017-02-19 13:08:06 +00:00

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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{
test ! -f "${kak_buffile}" && exit
buffer_basename=$(basename "${kak_buffile}")
buffer_dirname=$(dirname "${kak_buffile}")
## Find the name of the latest backup created for the buffer that was open
## The backup file has to have been last modified more recently than the file we are editing
## Other backups are removed
backup_path=$(find "${buffer_dirname}" -maxdepth 1 -type f -name "\.${buffer_basename}\.kak\.*" \
\( \( -newer "${kak_buffile}" -exec ls -1t {} + \) -o \( -exec rm {} \; \) \) 2>/dev/null)
if [ -z "${backup_path}" ]; then
exit
fi
# Only get the most recent one
backup_path=$(ls -t $backup_path | head -n1)
printf %s\\n "
## Replace the content of the buffer with the content of the backup file
exec -draft %{ %d!cat<space>${backup_path}<ret>d }
eval -client %val{client} 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
hook -group autorestore buffer BufWritePost '${kak_buffile}' %{
nop %sh{
if [ \"\${kak_opt_autorestore_purge_restored}\" = true ]; then
rm -f '${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{
test ! -f "${kak_buffile}" && exit
buffer_basename=$(basename "${kak_bufname}")
buffer_dirname=$(dirname "${kak_bufname}")
find "${buffer_dirname}" -maxdepth 1 -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" %{
remove-hooks global autorestore
}
hook -group autorestore global BufOpenFile .* %{ autorestore-restore-buffer }