#!/bin/sh
#
# p_force local_census remote signature
#
# remote_signature is assumed to have been created by p_signature
# from the census file on the remote system
#
# $Id: p_force,v 1.11 1997/12/19 03:13:31 markgw Exp $
#

tmp=/var/tmp/$$

status=1
trap "cd /; rm -rf $tmp.* $tmp; exit \$status" 0 1 2 3 15
MSG="rv: kenmcd@engr pv: 484961 - sync up common source from pcp to kudzu isms"

# needed to make ptools (and in particular p_tupdate -o) behave in the
# presence of possible file name clashes in /var/tmp
#
rm -rf $tmp
mkdir $tmp
if [ ! -d $tmp ]
then
    echo "Warning: failed to make private temporary directory \"$tmp\", reverting to the default"
else
    TMPDIR=$tmp
    export TMPDIR
fi

# set MAGIC in the environment to turn on -x tracing for hard to
# debug problems in this script
#
[ ! -z "${MAGIC+x}" ] && set -x

_ans()
{
    if $default_ans
    then
	ans=""
	echo ""
    else
	read ans </dev/tty
    fi
}

_usage()
{
    echo "Usage: p_force [options] local_census remote_signature"
    echo "Options:"
    echo "	-d	automatically take default responses to all questions"
    echo "	-N	show me, don't change anything"
    echo "	-V	more verbose output"
}

# would not be necessary if they had a useful exit status!
_check_ptools()
{
    if grep ERROR $1 >/dev/null 2>&1
    then
	echo "Error: you must fix the ptools failure and try again"
	exit
    fi
}

# serious error, give user chance to abort or continue
_err()
{
    echo "Skip this file (s), or abort p_force (a)? [s] \c"
    _ans
    case "$ans"
    in
	""|s)
	    ;;
	*)
	    exit
	    ;;
    esac
}

_p_signature()
{
    # ignore the rcs ident strings, they are often wrong!
    # use the checksum to see if the source we have here is the same
    # as expected ... note, use the same rcs ident dodging scheme
    # dodge non-ascii files as special case bullets
    # ... all of this has to match p_signature
    case $1
    in
	*.rgb|*.gif|*.jpg|*.sc|*.0|*.index|*.meta|*.pag|*.dir)
	    chk=`sum <$1`
	    ;;
	*)
	    if [ `(cat $1;echo "") | wc -c | sed -e 's/ //g'` = `(cat $1;echo "") | sed -n p | wc -c | sed -e 's/ //g'` ]
	    then 
		chk=`(cat $1;echo "") \
		| sed \
		    -e '/\$Id/d' \
		    -e '/\$Header/d' \
		    -e '/\$Revision/d' \
		| sum`
	    else
		chk=`sum <$1`
	    fi
	    ;;
    esac
}

_grind()
{
    rev=`p_tupdate -o $1 2>&1 | tee $tmp.tmp | nawk '{print $NF}'`
    if [ -z "$rev" ]
    then
	echo "Error: failed to extract revision from \"p_tupdate -o $1\"" >$tmp.err
	cat $tmp.tmp >>$tmp.err
	echo failed
	exit
    fi
    if [ -f ${1}${rev} ]
    then
	_p_signature ${1}${rev}
	rm -f ${1}${rev}
	if [ "$chk" = "$2 $3" ]
	then
	    echo "same"
	    return
	fi
    else
	echo "Error: failed to checkout file from \"p_tupdate -o $1\"" >$tmp.err

	echo "       or bogus revision \"$rev\"" >>$tmp.err
	cat $tmp.tmp >>$tmp.err
	echo failed
	exit
    fi
    echo "different"
}

ECHO=":"
FINAL="p_finalize"
INTEG="p_integrate"
STATE="p_state"
UNMOD="p_unmodify"
UNINTEG="p_unintegrate"
TUPDATE="p_tupdate"
EXIT_ERR="_err"
BUGMAIL=true
default_ans=false

while getopts 'dNV?' c
do
    case $c
    in
	d)	# take defaults
		default_ans=true
		;;

	N)	# show-me
		FINAL="echo + p_finalize"
		INTEG="echo + p_integrate"
		UNMOD="echo + p_unmodify"
		UNINTEG="echo + p_unintegrate"
		TUPDATE="echo + p_tupdate"
		EXIT_ERR="echo + _err"
		BUGMAIL=false
		;;

	V)	# verbose
		ECHO="echo"
		;;

	\?)	_usage
		exit
		;;
    esac
done
shift `expr $OPTIND - 1`

if [ $# -ne 2 ]
then
    _usage
    exit
fi

if [ ! -f $1 ]
then
    echo "p_force: cannot open local_census \"$1\""
    exit
fi
if [ ! -f $2 ]
then
    echo "p_force: cannot open remote_signature \"$2\""
    exit
fi

# Note: skip FORMAT and non-PCP lines
#
sed -n <$1 \
    -e '/^FORMAT/d' \
    -e 's/|.*//' \
    -e 's/%.*%/ /' \
    -e '/eoe\/cmd\/pcp\/pmdas\/irix/{
/root_irix/p
d
}' \
    -e '/eoe\/cmd\/pcp/p' \
    -e '/eoe\/lib\/libpcp/p' \
    -e '/eoe\/lib\/libpcp_dev/p' \
    -e '/eoe\/lib\/libpcp_pmda/p' \
    -e '/eoe\/man\/man1/p' \
    -e '/eoe\/man\/man4/p' \
    -e '/eoe\/man\/man5/p' \
| sort -u > $tmp.old

# go to base of the kudzu tree
#
cd $WORKAREA
HOME=`pwd`
echo "=== relocate to $HOME ==="

if $BUGMAIL
then
    echo "+" >>$WORKAREA/final.$USER
    echo "+PARTIAL TAKE 484961 - reconcile differences between kudzu and pcp isms"  >>$WORKAREA/final.$USER
    echo "+`date`" >>$WORKAREA/final.$USER
    eval `sed -e 's/[ 	]*:[ 	]*/ : /' $WORKAREA/.workarea | awk '
/^workarea.sm_machine/	{ host=$3; next }
/^workarea.sm_location/	{ loc=$3; next }
END			{ print "where=" host ":" loc }'`
    echo "+The following file(s) were checked into $where" >>$WORKAREA/final.$USER
    echo "+to sync up this source tree with the remote PCP source tree" >>$WORKAREA/final.$USER
    echo "+" >>$WORKAREA/final.$USER
    echo '+! vi(1) instructions to cleanup take mail' >>$WORKAREA/final.$USER
    echo '+! :1,/vi(1)/' >>$WORKAREA/final.$USER
    echo '+! :.,$v/^+/d' >>$WORKAREA/final.$USER
    echo '+! :1,$s/^+//' >>$WORKAREA/final.$USER
    echo '+! :g/^!/d' >>$WORKAREA/final.$USER
fi

join -a1 -a2 -e \#  -o 1.1,2.1,1.2,2.2,2.3,2.4 $tmp.old $2 \
| while read f_old f_new v_old v_new chk_1 chk_2
do
    $ECHO $f_old $f_new $v_old $v_new $chk_1 $chk_2
    if [ "$f_new" = "#" ]
    then
	# normally do not care about this
	$ECHO "$f_old: Warning: file missing, needs p_remove or p_source_tree_remove?"
    else
	if [ ! -f $f_new ]
	then
	    # this is fatal
	    echo "$f_new: Error: file expected, and not here"
	    $EXIT_ERR
	    continue
	fi
	_p_signature $f_new

	if [ "$chk" != "$chk_1 $chk_2" ]
	then
	    # this is fatal
	    echo "$f_new: Error: checksum here [$chk], expected [$chk_1 $chk_2]"
	    $EXIT_ERR
	    continue
	fi

	if [ "$f_old" = "#" ]
	then
	    grind=`_grind $f_new $chk_1 $chk_2`
	    if [ "$grind" = same ]
	    then
		echo "$f_new: same as t-o-t, skip new"
		$UNINTEG $f_old >/dev/null 2>&1
		$UNMOD $f_old >/dev/null 2>&1
		$TUPDATE $f_old
		continue
	    elif [ "$grind" = failed ]
	    then
		echo "$f_new: catastrophe ... abandon this one"
		cat $tmp.err
		rm -f $tmp.err
		continue
	    fi
	    echo "$f_new: new $v_new"
	    # no text as description for new files
	    $FINAL -B -m "Dummy first version" $f_new 2>&1 | tee $tmp.out
	    _check_ptools $tmp.out
	    if [ "$v_new" != "1.1" ]
	    then
		# initial version is not 1.1, so force version to right value
		$INTEG -E $f_new 2>&1 | tee $tmp.out
		_check_ptools $tmp.out
		$FINAL -B -m "$MSG" -r$v_new $f_new 2>&1 | tee $tmp.out
		_check_ptools $tmp.out
		$BUGMAIL && echo "+ $f_new - $v_new" >>$WORKAREA/final.$USER
	    else
		$BUGMAIL && echo "+ $f_new - 1.1" >>$WORKAREA/final.$USER
	    fi
	elif [ "$v_new" != "$v_old" ]
	then
	    if `echo "$v_new" "$v_old" \
		| sed -e 's/\./ /g' \
	        | awk '{ if (0+$1 > 0+$3 || (0+$1 == 0+$3 && 0+$2 > 0+$4)) exit(1) }'`
	    then
		# this is fatal
		echo "$f_old: Error: version regressed from $v_old to $v_new!"
		$EXIT_ERR
		continue
	    else
		grind=`_grind $f_new $chk_1 $chk_2`
		if [ "$grind" = same ]
		then
		    echo "$f_old: same as t-o-t, skip update $v_new"
		    $UNINTEG $f_old >/dev/null 2>&1
		    $UNMOD $f_old >/dev/null 2>&1
		    $TUPDATE $f_old
		    continue
		elif [ "$grind" = failed ]
		then
		    echo "$f_old: catastrophe ... abandon this one"
		    cat $tmp.err
		    rm -f $tmp.err
		    continue
		fi
		echo "$f_old: update $v_new"
		case `p_state $f_old`
		in
		    *"trunk state"*)
			$INTEG -O -E $f_new 2>&1 | tee $tmp.out
			_check_ptools $tmp.out
			;;
		    *"modified state"*)
			$INTEG -O $f_new 2>&1 | tee $tmp.out
			_check_ptools $tmp.out
			;;
		esac
		$FINAL -B -m "$MSG" -r$v_new $f_new 2>&1 | tee $tmp.out
		_check_ptools $tmp.out
		$BUGMAIL && echo "+ $f_new - $v_new" >>$WORKAREA/final.$USER
	    fi
	else
	    # wish more of them were like this ...
	    $ECHO "$f_old: no change"
	fi
    fi
done

$BUGMAIL && echo "+	-$MSG" >>$WORKAREA/final.$USER

status=0
exit