make-snapshot

#!/bin/sh
#   make-snapshot: Create a snapshot of the JIGS with the date of today.
#
#   Copyright (C) 2000 Free Software Foundation, Inc.
#
#   Author:  Nicola Pero <nicola@brainstorm.co.uk>
#   Date: July 2000
#   
#   This file is part of GNUstep.
#   
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#   
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#   
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

#
# Usage: make-snapshot
# It creates a new snapshot with the date of today.
#

#
# By changing the following two, you may use this script 
# to generate snapshots for other packages/cvs modules
#
package_name=jigs
cvs_module=java

#
# Now the code
#

# Get snapshot date 
snapshot_name=${package_name}-snapshot-`date +%y%m%d`
echo Making $snapshot_name

# Create ./snapshots directory if it does not exist
if [ ! -d snapshots ]; then
  mkdir snapshots
fi

# Go into ./snapshots
cd snapshots

# Export CVS module in ./snapshots
echo Exporting CVS module ${cvs_module}
cvs -z3 export -D now $cvs_module

# Change name of the source directory
mv $cvs_module $snapshot_name

# Save previous snapshot (if any) before overwriting with the new one
if [ -f ${snapshot_name}.tar.gz ]; then 
  echo "snapshots/${snapshot_name}.tar.gz already exists:"
  echo "saving old version into snapshots/${snapshot_name}.tar.gz~"
  mv ${snapshot_name}.tar.gz ${snapshot_name}.tar.gz~
fi

# Create the .tar.gz
echo Creating the archive file
tar chfz ${snapshot_name}.tar.gz $snapshot_name
rm -rf $snapshot_name

# Done; a tiny check before exit
if [ ! -f ${snapshot_name}.tar.gz ]; then 
  echo Error creating snapshot !
fi