#!/bin/sh
#
# This script will count the number of changes for each package and printout
# a list of packages, the number of changes, and the last tag placed on the
# package. It will also create an output file with package, tag, and change mark
#
# usage: Changed_packages.csh Reference-release new-release effective-date/time
#
# input parameters: $1 Release name to base the change detection on.
#			Any changes since this release will be used to
#			trigger the retag of the packages.
#                   $2 The new release name. ( zb 3.11.0 )
#		    $3 date in the form dd-mm-yyyy - controls date of revision
#			to tag.  Defaults to the value returned by Make_midnight
#			which should approximate midnight.
#
# output:  new-release.tags:   script that will cvs rtag packages with new tags
#          new-release.newver: script that will cvs import packages using newver
#	   new-release.newrel: file to be used with newrel -f to create release
#          new-release.doc:    file to serve as documentation
#
# Scripts: Find_cvs_root
#	   Make_midnight
#	   Find_package_changes
#	   Get_last_tag_from_file
#	   make_new_tag
#
# Initialize output files
ref_rel=$1
release=$2
date=$3
if [ -z "$ref_rel" ]
then
    parerr=1
elif [ "`echo $ref_rel|grep '.'`" = "" ]
then
    parerr=1
fi
if [ -z "$release" ]
then
    parerr=1
fi

if [ "$parerr" = "1" ]
then
    echo ''
    echo $0 reference-release release '[tag-date (midnight)]'
    exit 1
fi

if [ "$CDFSOFT2_DIR" = "" ]
then
    UPS_SHELL=sh; export UPS_SHELL
    . `$UPS_DIR/bin/ups setup ups`
    setup cdfsoft2 development
    if [ "$CDFSOFT2_DIR" = "" ]
    then
	echo Please setup cdfsoft2 development before running changed_packages.
	exit 1
    fi
fi
My_dir=${BFDIST}/releases/development/Release/Scripts
Rel_dir=${BFDIST}/releases/development/Release/Releases
if [ "$date" = "" ]
then
    date=`${My_dir}/Make_midnight`
fi
work_space=`${My_dir}/define_work_area`
if [ "$work_space" = "" ]
then
    echo Unable to define temporary work space
    exit 1
else
    echo Using $work_space as temporary area
fi

if [ ! -d ${My_dir} ]
then
    My_dir=`${My_dir}/make_my_dir $0`
fi

cd $work_space

rm -f CDF.History OSS.History SRT.History ZOOM.History
rm -f CDF.THistory OSS.THistory SRT.THistory ZOOM.THistory
rm -f $release.tags $release.newver $release.newrel $release.doc
touch $release.tags $release.newver $release.newrel $release.doc
echo ''
echo Using $ref_date as beginning reference date for changes
echo Using $release as release name
echo Using $date as last repository revision date to tag.
echo ''

echo '#!/bin/sh' >> $release.tags
#echo 'UPS_SHELL=sh; export UPS_SHELL' >> %release.tags
#echo '$UPS_DIR/bin/ups setup cdfsoft2 development' >> $release.tags
echo 'CVS_SSH1=$CVS_RSH' >> $release.tags
echo '#!/bin/sh' >> $release.newver
echo 'UPS_SHELL=sh;export UPS_SHELL' >> $release.newver
echo ". \$HOME/cdf2.shrc" >> $release.newver
echo 'setup cdfsoft2 development' >> $release.newver
echo 'CVS_SSH1=$CVS_RSH' >> $release.newver
#
#stdfiles=" GNUmakefile ReleaseLog "
#stddirs=" tmp bin lib include man doc results ups "
#stdfildirs="$stdfiles $stddirs"
DEF_CVSRSH=$CVS_RSH

#cdf_prods=`ls -d $BFDIST/releases/$BFCURRENT/* | awk -F/ '{print $NF}'`
cdf_prods=`cat $BFDIST/releases/$BFCURRENT/Distribution/packages`
# for each product find the version used in this release:
for prod in $cdf_prods
do
    set `${My_dir}/Find_cvs_root $prod | sed 's%,% %g'`
    cvs_svr_args="-d $1"
    tag_cvs_srv_args="-d $2"
    Repository=$3
#
#   get number of changes to package since tag was placed
#   on this package in reference-release
#   -----------------------------------------------------
    Ref_tag=`grep "^${prod} " ${Rel_dir}/${ref_rel}.newrel | cut -f2- -d' '`
    num=`${My_dir}/Find_package_changes $prod $Ref_tag $date`
#
#   get most recent tag that is currently on product
#   ------------------------------------------------

    if [ ! -r $Repository.THistory ]
    then
	cvs $cvs_svr_args history -T -a > $Repository.THistory
    fi
    
    tag=`${My_dir}/Get_last_tag_from_file $prod $Repository.THistory`

    if [ "${tag}" = "" ]; then
	echo ""
	echo Cannot retrieve current tag on $prod
	echo ""
	echo "    Skipping $prod"
	continue
    fi
#
#   Force tagging of Release package, because its changing now
#   ----------------------------------------------------------
    if [ "${Prod}" = "Release" ]; then
	if [ $num -eq 0 ]; then
	    num=1
	fi
    fi
#
#   Check for changes 
#   ------------------
    if [ $num -eq 0 ]; then
#
#     No Changes, let the user know
#     -----------------------------
      echo $prod has no changes and tag $tag
    else
#
#     Increment tag
#     -------------
	tag2=`${My_dir}/make_new_tag $tag`
#
#     Changes, let the user know old and new tags to check them
#     -------------------------------------------------
      echo $prod has $num changes, old tag $tag, and new tag $tag2
#
#     Set the tag to be the new tag
#     -----------------------------
      tag=$tag2
    fi
#
#   Write the package and new tag to the output files
#   -------------------------------------------------
    echo $prod $tag >> $release.newrel
    if [ "${prod}" = "Release" ]; then
	echo 'cvs ' $tag_cvs_srv_args ' rtag '$tag ' ' $prod >> $release.tags
    elif [ $num -gt 0 ]; then
      echo 'cvs ' $tag_cvs_srv_args ' rtag ' -D\"$date\" -a $tag ' ' $prod >> \
		$release.tags
    fi
      echo 'if [ ! -d $BFDIST/packages/'${prod}/${tag} ']' >> $release.newver
      echo 'then' >> $release.newver
      echo '    newver -Q -p ' $cvs_svr_args $prod $tag  >> $release.newver
      echo 'fi' >> $release.newver
    prdl=`expr "$prod                           " : '\(........................\).*'`
    if  [ $num -eq 0 ]; then
      echo "${prdl}${tag}" >> $release.doc
    else 
      echo "${prdl}${tag}" '       *'${num}' changes' >> $release.doc
    fi
done

echo ''
echo 'Updating the cvs repository'
echo ''
cvs -Q checkout Release
cd Release/Releases
add_release=no
if [ ! -f ${release}.newrel ]
then
    add_release=yes
fi
cp ${work_space}/${release}.* .
chmod +x ${release}.*
if [ "$add_release" = "yes" ]
then
    cvs add ${release}.*
fi
cvs commit -m "Added ${release}. files to Release package"
echo ''
echo Cleaning up $work_space
echo ''
cd $work_space
rm -r Release
rm -f CDF.History OSS.History SRT.History ZOOM.History
rm -f CDF.THistory OSS.THistory SRT.THistory ZOOM.THistory
#rm -f $release.tags $release.newver $release.newrel $release.doc