#! /bin/sh
#*******************************************************************************
# E.S.O. - VLT project
#
# "@(#) $Id: docMoveOldVersions,v 1.31 2002/06/08 17:20:46 vltsccm Exp $"
#
# who       when      what
# --------  --------  ----------------------------------------------
# pforstma  29/08/95  created
#

#************************************************************************
#   NAME
#	
#   docMoveOldVersions - move old documents versions
# 
#   SYNOPSIS
#
#   docMoveOldVersions [-m]
# 
#   DESCRIPTION
#
#   If -m option is not specified, document versions (with size)
#   that would be moved are displayed.  Size information is based on
#   'du' command.

#   If -m option is specified, version directories are moved according
#   to the following scheme: each old document version is moved to 
#   /home/te13f/vltsccm/doc_old. A old document version is any document 
#   subdirectory named issue_X.Y older that the most recent one 
#   (unique  document versions are not moved). A link to the moved document
#   version replaces the original issue_X.Y directory.
#   
#   Only "vltsccm" user can use -m option.
#
#   ENVIRONMENT
#
#   Documents are directory under $VLT_DOCARCHIVE_ROOT with at last
#   one "issue" subdirectory.
#
#   CAUTIONS
#
#   Needs a write access in each document.
#
#   It's up to the user to backup /home/te13f/vltsccm everytime this script
#   ir run.
#
#   BUGS     
#
#   If all versions have the same creation date, the most recent version
#   is not necessarily the one having the most recent creation date
#   and the script may choose the wrong one.
#
#------------------------------------------------------------------------
#

user=`whoami`

move=0
if [ $# -eq 0 ]
then
	move=0
elif [ $# -eq 1 ]
then
	if [ $1 = "-m" ]
     	then
		move=1
		if [ $user != "vltsccm" ]
		then
			echo "Must be vltsccm to move directories"
			exit 1
		fi
	else 
	echo "usage: docMoveOldVersions [-m]"
	  	exit 1
     	fi
else
	echo "usage: docMoveOldVersions [-m]"
	exit 1
fi

patternFile=/tmp/pf
rm -rf $patternFile
echo '->' > $patternFile

os=0
target=/home/te13f/vltsccm/old_doc
cd $VLT_DOCARCHIVE_ROOT
for doc in *
do
	# if directory 
	if [ -d $doc ]
	then
		# count issues (but not the links)
		in=`ls -l $doc | grep -v -f $patternFile | grep -c issue`
		if [ $in -gt 1 ]
		then
			# list issues (but not the links)
			il=`ls -t $doc |  grep -v -f $patternFile |grep issue `
			ii=1
			for issue in $il
			do
				# don't move the last version 
				if [ $ii != 1 ]
				then
					set `du $doc/$issue`
					size=$1
					echo $doc/$issue "\t" $size 
					os=`expr $os + $size`		
					if [ $move -eq 1 ]
					then
						if [ ! -d $target/$doc ]
						then
							mkdir $target/$doc
						fi
						cp -r $doc/$issue \
							$target/$doc/$issue
						rm -rf $doc/$issue
						ln -s $target/$doc/$issue \
							$doc/$issue
					fi
				fi	
				ii=`expr $ii + 1`
			done
		fi
	fi
done

echo "\n"
echo "Old versions total size : \t $os"
echo "\n"

if [ $move -eq 0 ]
then
	if [ $os -ne 0 ]
	then
	  echo "\n"
	  echo "DO NOT FORGET TO ALLOW vltsccm TO WRITE IN THE DOC. DIRS. !"
	  echo "\n"
	fi
else
	echo "\n"
	echo "DO NOT FORGET TO BACKUP /home/te13f/vltsccm !"
	echo "\n"
fi

#
# ___oOo___