#!/bin/sh

archiver=`dirname "$0"`/logarchiver
rotator=`dirname "$0"`/logrotator
compressor=`dirname "$0"`/logcompressor
cleaner=`dirname "$0"`/logcleaner
cmd=

help() {
	cat <<EOF
  `basename "$0"` -h | [-a EXE] [-z EXE] [-C EXE] [-c CONF]
-c CONF	Config file (std: ./lmtab ~/.lmtab /etc/lmtab (first come first serve)
-a EXE	Archiver (std: ./logarchiver)
-z EXE	Compressor (std: ./logcompressor)
-C EXE	Cleaner (std: ./logcleaner)
-n	Dummy mode: prints what will called if not dummy.
-N	Calls archiver, compressor and cleaner in dummy mode (-n).
-h  Prints this.
EOF
	exit
}

with_n() {
	__cmd=$1
	shift
	echo "$__cmd" -n "$@"
	"$__cmd" -n "$@"
}

while getopts hc:a:r:z:C:nN o
do
	case "$o" in
	h) help ;;
	c) c="$OPTARG" ;;
	a) archiver="$OPTARG" ;;
	r) rotator="$OPTARG" ;;
	z) compressor="$OPTARG" ;;
	C) cleaner="$OPTARG" ;;
	n) cmd=echo ;;
	N) cmd=with_n ;;
	*) help ;;
	esac
done
shift `expr $OPTIND - 1`

for n in "$c" ./lmtab "$HOME/.lmtab" /etc/lmtab
do
	if [ -f "$n" ]
	then
		c=$n
		break
	fi
done

if [ ! -r "$c" ]
then
	echo "No config found." >&2
	exit 1
fi

# Read variables from config-file and export it as process variables.
eval `sed -ne '
	s/#.*//;s/'\''/'"'\\\\\''"'/g;
	s/\${\([a-zA-Z][0-9a-zA-Z_]*\)}/'\''"$\1"'\''/;
	s/^\([a-zA-Z_][0-9a-zA-Z_]*\)=\(.*\)/\1='\''\2'\''; export \1/p
' < "$c"`

# Format: Directory [Expression[/Expression[/...]]] [retention time]
# Directories must be uniq!
sed -ne 's/#.*//;s/^[a-zA-Z_][0-9a-zA-Z_]*=.*//;/\//p' "$c" | while read dir exp age opts
do
	[ X = "X$age" ] || age="-a$age"
	while [ ! "X." = "X${exp}" ]
	do
		e="`basename "${exp}"`"
		exp="`dirname "${exp}"`"
		$cmd $archiver -e "$e" -- "$dir"
	done
	$cmd $compressor -- "$dir"
	[ 0 = "$age" ] || $cmd $cleaner "$age" -- "$dir"
done