#!/bin/sh

doit()
{
	echo $*
	$*
}

usage()
{
	echo "Usage: cvs-take-patch patch_file_name"
	exit 1
}

#
# Find the highest level directory in $1 which does not
# contain the directory $2.  Return it in $MISSING
#
highest_missing()
{
	START_DIR="$1"
	NAME="$2"
	MISSING=""
	WHERE=$(dirname "$START_DIR")
	PREV_WHERE=$START_DIR
	while [ x"$WHERE" != x"$PREV_WHERE" ]
	do
		WHERE="$PREV_WHERE"
		if [ ! -d "$WHERE"/"$NAME" ]
		then
			MISSING="$WHERE"
		fi
		PREV_WHERE=$(dirname "$WHERE")
	done
	echo highest_missing returns $MISSING
}

#
# Add all new directries to CVS, top-down
# $1: name of a directory
# $2: name of the CVS directory
#
add_cvs_dirs()
{
	MISSING=foo
	while [ "$MISSING" != "" ]
	do
		highest_missing $1 $2
		if [ x"$MISSING" != "x" ]
		then
			if [ ! -d "$MISSING"/"$2" ]
			then
				doit cvs add $MISSING
			fi
		fi
	done
}

PATCHFILE=$1

REMOVEDFILES=$(removed-by-patch $PATCHFILE)
if [ "$REMOVEDFILES" != "" ]
then
	doit cvs remove $REMOVEDFILES
fi

NEWFILES=$(added-by-patch $PATCHFILE)
for i in $NEWFILES
do
	DIRNAME=$(dirname $i)
	echo "Looking at $DIRNAME"
	add_cvs_dirs $DIRNAME CVS
done

if [ "$NEWFILES" != "" ]
then
	doit cvs add $NEWFILES
fi