strip

: "strip	strip addon products from distribution tree"
#
# Most of this script is dedicated to making sure files don't get clobbered by
# out-of-date files in case an aborted strip or merge left some of the
# distributions incomplete.
# 

if [ $# = 0 ]
    then set cmacs viplus
fi

CONFIRM=confirm.sh
PATH=${PATH}:./config; export PATH

for ADDON
    do
	ADDONDIR=$ADDON

	for i in . $ADDON
	    do  if [ -f $i/config/add${ADDON}.sh ]
		    then FILES=`$i/config/add${ADDON}.sh list`
		    break
		fi
	    done

	if [ x"$FILES" = x ]
	    then echo "Sorry, but I can't locate the file config/add${ADDON}.sh"
		echo "which would have told me which files make up the $ADDON"
		echo "distribution.  This means that there are files missing"
		echo "entirely from the $ADDON distribution, which you had"
		echo "better do your best to find again."
	fi


	# check for files missing from the main distribution, or whether the
	# main distribution exists at all
	# 
	MAINCOMPLETE=TRUE
	MAINMISSING=TRUE
	> /tmp/MainMissing
	for i in $FILES
	    do	if [ ! -f $i -a ! -d $i ]
		    then echo "$i" >>/tmp/MainMissing
			 MAINCOMPLETE=FALSE
		    else MAINMISSING=FALSE
		fi
	    done

	# Check to see if the addon directory is complete or missing entirely.
	# 

	ADDONCOMPLETE=FALSE
	ADDONMISSING=TRUE
	if [ -d $ADDONDIR ]
	   then ADDONCOMPLETE=TRUE
		> /tmp/${ADDON}Missing
		for i in $FILES
		    do if [ ! -f $ADDONDIR/$i -a ! -d $ADDONDIR/$i ]
			then echo "$i" >> /tmp/${ADDON}Missing
			     ADDONCOMPLETE=FALSE
			else ADDONMISSING=FALSE
		       fi
		    done
	fi

	# Now:
	#   ADDONMISSING is TRUE if the addon directory is missing completely.
	#   ADDONCOMPLETE is TRUE if the addon has all the proper files in it.
	#		    (they may not be up to date, however).
	#   MAINMISSING is TRUE if none of the addon files exist in the main
	#		    distribution.
	#   MAINCOMPLETE is TRUE if all the addon files exist in the main
	#		    distribution.  They may not be up to date, however.
	#

	if [ $ADDONCOMPLETE = TRUE -a $MAINMISSING = TRUE ]
	    then echo "$ADDON distribution already stripped and is complete"
		continue
	fi

	if [ $MAINCOMPLETE = TRUE ]
	    then echo "main distribution has all the $ADDON files it should"
	    rm /tmp/MainMissing
	fi

	if [ $ADDONCOMPLETE = TRUE ]
	    then echo "$ADDON distribution has all the files it should"
	    rm /tmp/${ADDON}Missing
	fi

	if [ $ADDONCOMPLETE = TRUE -a $MAINCOMPLETE = TRUE ]
	    then
		echo "Both the main and the $ADDON distribution have all the files."
		echo "However, one of them may be out of date."
		echo "You'll have to figure out which files are newest and move"
		echo "them into the main distribution.  To help you do this,"
		echo "here's a diff of the main (<) vs. $ADDON (>), which will be"
		echo "left in /tmp/${ADDON}Diffs:"
		(for i in $FILES
		    do diff -cr $i $ADDONDIR/$i
		    done
		) | tee /tmp/${ADDON}Diffs
		echo "If you say the word now I'll assume that the main"
		echo "distribution is the good one, remove the redundant $ADDON,"
		echo "and strip the files from the main one to create a new"
		echo "$ADDON distribution."
		if [ `$CONFIRM "Shall I replace the bad $ADDON with a new one ?"\
			TRUE` = FALSE ]
		    then echo "Ok, go figure out which files in the redundant"
			 echo "$ADDON are ones you want to keep, move them"
			 echo "into the main distribution, and run $0 again."
			 echo "To help you, I'll leave a list of the $ADDON"
			 echo "files in /tmp/${ADDON}Files."
			 echo $FILES|tr ' ' '\012' >/tmp/${ADDON}Files
			 exit 1
		fi
	fi

	if [ $MAINCOMPLETE = FALSE -a $MAINMISSING = FALSE -a $ADDONCOMPLETE = TRUE ]
	    then (
		echo "There is a complete $ADDON distribution in $ADDONDIR,"
		echo "but the main distribution is missing some $ADDON files."
		echo "Most likely this happened because someone aborted a"
		echo "merge, and the files in $ADDON represent a complete"
		echo "up-to-date distribution."
		echo "If you say the word now I'll assume that is so, remove"
		echo "whatever $ADDON files are left in the main distribution,"
		echo "and leave the files in $ADDONDIR as the $ADDON distribution."
		echo "To help you decide, here's a list of the files that are"
		echo "missing from the main distribution:"
		cat /tmp/MainMissing
		echo) | more
		if [ `$CONFIRM "Shall I remove the $ADDON files from the main?"\
			TRUE` = FALSE ]
		    then echo "Ok, go figure out which $ADDON files in the main"
			 echo "distribution are ones you want to keep, move them"
			 echo "into the $ADDON distribution by hand."
			 exit 1
		    else echo "Removing $ADDON from main distribution."
			rm -rf $FILES
			echo "A complete $ADDON distribution is still in $ADDONDIR."
			exit 0
		fi
	fi

	if [ $ADDONCOMPLETE = FALSE -a $ADDONMISSING = FALSE -a $MAINCOMPLETE = TRUE ]
	    then (
		echo "There is an incomplete $ADDON distribution in $ADDONDIR."
		echo "The main distribution has all the files it should."
		echo "Most likely the main distribution is up-to-date, and the"
		echo "incomplete $ADDON resulted when someone aborted a 'strip'."
		echo "If you say the word now I'll assume that is so, remove"
		echo "the incomplete $ADDON, and go on to strip the files from"
		echo "the main one to create a new $ADDON distribution."
		echo "Here's a list of the files that are missing from $ADDON:"
		cat /tmp/${ADDON}Missing
		echo) | more
		if [ `$CONFIRM "Shall I replace the bad $ADDON with a new one ?"\
			TRUE` = FALSE ]
		    then echo "Ok, go figure out which files in the incomplete"
			 echo "$ADDON are ones you want to keep, move them"
			 echo "into the main distribution, and run $0 again."
			 exit 1
		fi
	fi

	# Now $MAINCOMPLETE = TRUE, and the addon is expendable.  Remove the
	# addon distribution and strip the files from the main distribution
	# into it.
	# 

	if [ $ADDONMISSING = FALSE ]
	    then echo "Removing old $ADDON distribution in $ADDONDIR"
    		(cd $ADDONDIR; rm -rf $FILES)
	fi

	if [ ! -d $ADDONDIR ]
	    then echo "Creating new directory '"$ADDONDIR"'"
		mkdir $ADDONDIR
	fi

	echo "Moving files into $ADDONDIR:"

	# the following tar pipe may not work on System V
	#
	if (tar cf - $FILES |(cd $ADDONDIR; tar x${V}f -))
	    then
		echo "Removing $FILES"
		rm -rf $FILES
	fi
    done