#! /bin/bash

if [ $# != 3 ]; then 
echo "Usage: $0 <RPM dir> <SRPM dir> <filelist>";
exit;
fi

if [ ! -d $1 ]; then
echo "Missing RPM dir";
exit;
fi

if [ ! -d $2 ]; then
echo "Missing SRPM dir";
exit;
fi

if [ ! -f $3 ]; then
echo "Missing file list";
exit;
fi

if [ -d RPMS ]; then
echo "./RPMS dir already exists, will not risk overwriting";
exit;
fi

if [ -d SRPMS ]; then
echo "./SRPMS dir already exists, will not risk overwriting";
exit;
fi

mkdir RPMS;
mkdir SRPMS;

#Returns the cleaned up list of RPMs in an image, strip empty lines
cat $3 | sed -e 's/^#.*//' -e 's/--.*$//' | grep -v "^$" | while read i; do

	if [ ! -f $1/$i ]; then
	echo "Missing RPM file: $1/$i";
	exit;
	fi

	cp -a $1/$i ./RPMS/;

	# Returns the SRPM that originated this RPM
	j=`rpm -qp --info $1/$i | grep "Source RPM" | sed -e 's/^.*Source RPM: //';` 

	if [ ! -f $2/$j ]; then
	echo "Missing SRPM file: $2/$j";
	exit;
	fi

	cp -a $2/$j ./SRPMS/;

done;

echo "Success";