#!/bin/sh

#
# Add next patch in series
#

. patchfns >/dev/null || . /usr/lib/patch-scripts/patchfns >/dev/null || { \
	echo "Impossible to find my library 'patchfns'."
	echo "Check your install, or go to the right directory"
	exit 1
}

usage()
{
	echo "Usage: pushpatch [npatches]"
	exit 1
}

opt_force=0

for i in $*
do
	case "$i" in
	-f)
		opt_force=1;;
	*)
		if [ -n "$NR" -o -n "$STOP_AT" ]
		then
			usage
		fi
		if is_numeric $i
		then
			NR=$i
		else
			NR=1000
			STOP_AT=$(stripit $i)
		fi;;
	esac
done

[ $opt_force = 1 ] && force="-f"

SERIES=series

if [ ! -e $SERIES ]
then
	echo 'File "series" not found'
	exit 1
fi

push_one()
{
	top=$(toppatch)
	if [ x"$top" == x ]
	then
		todo=$(head -1 $SERIES)
	else
		last_in_series=$(stripit $(tail -1 $SERIES))
		if [ $last_in_series == $top ]
		then
			echo "Series fully applied.  Ends at $top"
			exit 0
		fi
		todo=$(grep -C1 "^$top\.patch" $SERIES | tail -1)
		if [ x$todo = x ]
		then
			todo=$(head -1 $SERIES)
		fi
	fi

	apatch $force $todo
}

for i in $(seq 1 $NR)
do
	push_one
	if [ x$STOP_AT != "x" ]
	then
		if [ $STOP_AT == $(toppatch) ]
		then
                        sum-series applied-patch
			exit 0
		fi
	fi
done
sum-series applied-patch