#!/bin/sh
#
# $Id: Reconstruct,v 1.4 2002/02/19 05:30:35 rmg Exp $
#
#	Reconstruct - Try to extract data from a corrupted GDBM database.
#
#	Syntax: Reconstruct [GDBM database file to recover]
#
PATH=/bin:/usr/bin:/usr/sbin:/usr/local/bin:.; export PATH
#
. mush.config
. check_paths
#
# If no filename was specified, use the name of the GDBM database.
#
DBFILE="$1"
if [ ! "$DBFILE" ]; then
    DBFILE=$DATA/$GDBM_DB
fi
if [ ! -r "$DBFILE" ]; then
    echo "Could not find the database file to recover."
    exit 1
fi
#
# Move our files out of the way. 
#
echo "Moving old files out of the way. Please ignore file-not-found warnings."
#
DBDATE=`date +%m%d-%H%M`
mkdir db-$DBDATE
mv -f $DATA/$GDBM_DB $DATA/$CRASH_DB $DATA/$BACKUP_DB db-$DBDATE
#
# Of course, we might have just moved the file that we wanted.
#
if [ "$DBFILE" = "$DATA/$GDBM_DB" -o "$DBFILE" = "$GDBM_DB" ]; then
    DBFILE=db-$DBDATE/$GDBM_DB
fi
#
# Recover the database.
#
echo "Attempting to reconstruct database."
$BIN/recover -i $DBFILE -o $DATA/$GDBM_DB
if [ $? -eq 0 ]; then
    echo "Reconstruction attempt completed (probably successful)."
else
    echo "Reconstruction attempt failed."
    echo "The file $DATA/$GDBM_DB will only be partially complete."
    echo "You will probably want to remove it. Use:  rm -f $DATA/$GDBM_DB"
    echo "The moved files can be found in the db-$DBDATE directory."
fi