von/backup.zsh
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some refactoring + fixed substitution

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Von Random 2015-01-15 17:24:29 +03:00
parent b5d0158936
commit d7ec2ce02f
1 changed files with 11 additions and 18 deletions

29
backup.zsh
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@ -48,42 +48,34 @@ function apply_config
return 5
fi
if [[ -n $port && ! $port =~ ^[0-9]+$ ]]; then
err 'Remote port is not a numeric value.'
err 'remote_port is not a numeric value.'
return 5
fi
}
# import contents of the config (including functions if present)
source $cfg || { err "Config file $cfg is unreadable or does not exist"; return 15 }
hostname=${local_host:-$HOST}
postfix=${outfile_postfix:-$default_postfix}
# do the tests
if [[ -z $source_dirs ]]; then
cfg_err 'source_dirs'
return 5
fi
if [[ -z $backup_dir && $protocol != 'ssh' ]]; then
cfg_err 'backup_dir'
return 5
fi
if [[ -z $local_host ]]; then
err 'local_host is not set, using hostname.'
local_host=$HOST
fi
if [[ -z $outfile_postfix ]]; then
postfix=$default_postfix
else
postfix=$outfile_postfix
fi
# set defaults and / or fail to run if something is missing
local exit_code
case $protocol in
('ftp'|'ftps') port=${remote_port:-$default_ftp_port}; test_remote_settings; exit_code=$?; [[ $exit_code -ne 0 ]] && return $exit_code;;
('sftp'|'ssh') port=${remote_port:-$default_ssh_port}; test_remote_settings; exit_code=$?; [[ $exit_code -ne 0 ]] && return $exit_code;;
('local') unset remote_port;;
(*) cfg_err 'protocol'; return 5;;
esac
unset exit_code
# set variables for tar command
case $compress_format in
('xz') compress_flag='J' ;;
('bz2') compress_flag='j' ;;
('gz') compress_flag='z' ;;
('') unset compress_flag ;;
(*) err "$compress_format is not a valid value for the compression format option."; return 5;;
esac
if [[ -n $exclude_list ]]; then
@ -106,7 +98,7 @@ function generate_fullpath
backup_type='full'
fi
if [[ -z $backup_filename ]]; then
outfile="$backup_dir/${local_host}-${src_basename}_${postfix}_${backup_type}${gnupg_key:+'.gpg.'}.t${compress_format:-'ar'}"
outfile="${backup_dir}${backup_dir:+/}${hostname}-${src_basename}_${postfix}_${backup_type}${gnupg_key:+.gpg.}.t${compress_format:-ar}"
else
outfile=$backup_filename
fi
@ -150,7 +142,7 @@ function parse_opts
while [[ -n $1 ]]; do
case $1 in
('--help'|'-h') usage; exit 0;;
('--conf'|'-c') shift; opt_cfg=$1; shift;;
('--conf'|'-c') shift; opt_cfg=$1; return 0;;
(*) err "unknown parameter $1"; exit 127;;
esac
done
@ -166,8 +158,9 @@ function main
# run config tests and fill in defaults
apply_config
# fail in case something goes wrong
local apply_config_returns=$?
[[ $apply_config_returns -ne 0 ]] && return $apply_config_returns
local exit_code=$?
[[ $exit_code -ne 0 ]] && return $exit_code
unset exit_code
# run backups per directory
for i in $source_dirs; do
# prepare the set of variables