#!/bin/sh
#
# Add a log to the things being tailed.
#	- Cameron Simpson <cs@zip.com.au> 25may1996
#

: ${TAILF:=$HOME/.tailf}
: ${LOGDIR:=$HOME/var/log}

control=$TAILF
key=
silent=
delete=

cmd=`basename "$0"`
usage="Usage: $cmd [-c control_file] [-d] [-s] key [file]
	-c control_file	Set control file (default: $control)."

badopts=
while :
do  case $1 in
        --)	shift; break ;;
	-c)	control=$2; shift ;;
	-d)	delete=1 ;;
	-s)	silent=1 ;;
	-?*)	echo "$cmd: unrecognised option: $1" >&2
		badopts=1
		;;
	*)	break ;;
    esac
    shift
done

if [ $# = 0 ]
then echo "$cmd: missing key" >&2; badopts=1
else key=$1; shift
fi

if [ $# = 0 ]
then file=$LOGDIR/$key
     if [ -z "$file" ]
     then echo "$cmd: no logmap for \"$key\"" >&2
	  badopts=1
     fi
else file=$1; shift
fi

[ $# = 0 ] || { echo "$cmd: extra arguments: $*" >&2
		badopts=1
	      }

[ -f "$control" ] || { echo "$cmd: not a regular file: $control" >&2
		       badopts=1
		     }

[ $badopts ] && { echo "$usage" >&2; exit 2; }

if [ $silent ]; then key="[$key]"
		else key="{$key}"
fi

[ $delete ] && key=-$key

echo "$key$file" >>$control