#!/bin/bash
#------------------------------------------------------------------------------
# Script to export a version of a code and build a tar file for distribution.
#
# The version name should either be "trunk" or begin with the letter "v".
# If it is "trunk", then simply check-out the current (untagged) version
# of the code.  If it is an actual tagged version, then svn-export that
# version.
#
# Example:
#   % eviltarball idlspec2d v4_5_0
# This creates the file "idlspec2d-v4_5_0.tar".  If you then wish to build
# the code from this tar file in a directory named "idlspec2d":
#   % tar xf idlspec2d-v4_5_0.tar
#   % mv idlspec2d-v4_5_0 idlspec2d
#   % cd spec2d
#   % setenv $IDLSPEC2D_DIR $PWD
#   % evilmake all
# Note that the environment variable with the product name must be set,
# and that the script "evilmake" must be in your path.  That script is
# in the distribution of the "idlutils" product.
#
# D. Schlegel, Princeton, 24 August 2001
# Updated for SDSS-III svn repository, B. A. Weaver, NYU, 2012-02-10
#
# $Id: eviltarball 17973 2012-02-10 19:06:45Z weaver $
#
#------------------------------------------------------------------------------
#
# Demand that both a product and version name are on the command line,
# and that the version name either be "trunk" or begin with the character "v".
#
if [ $# != 2 ] ; then
    echo "Need to specify product and version on command line, i.e."
    echo "  \"eviltarball idlutils v5_4_26\""
    exit 1
fi
prodname=$1
prodvers=$2
if [ "${prodvers}" != "trunk" -a "${prodvers:0:1}" != "v" ] ; then
    echo 'Version name must either be "trunk" or begin with the character "v".'
    exit 1
fi
#
# Make a temporary directory for exporting the code, and make certain
# that we can write to it.
#
tempdir=${PWD}
tempsubdir="${prodname}-${prodvers}"
#
# Now export the code.
#
svnroot=http://www.sdss3.org/svn/repo
cd ${tempdir}
if ["${prodvers}" = "trunk" ] ; then
    svn co ${svnroot}/${prodname}/trunk ${tempsubdir}
else
    svn export ${svnroot}/${prodname}/tags/${prodvers} ${tempsubdir}
fi
#
# Build the tar file
#
tar --create --verbose --file ${tempsubdir}.tar ${tempsubdir}
#
# Finally, delete the temporary directory used to export the code.
#
/bin/rm -rf ${tempdir}/${tempsubdir}