#!/bin/bash

. "$(dirname $0)/common.sh" ""

origwd=$(pwd)

get_field()
{
	grep -v '^#' $CTRL_FILE |
		awk -F '\t' '$3 == "'$1'" { print $'$2'; }'
}

trees="$@"
[ "$trees" ] ||
	trees=$(grep -v '^#' $CTRL_FILE | awk -F '\t' '{ print $3 }')

for name in $trees; do
	type=$(get_field "$name" 2)

	echo $name: $type
	if [ "$type" = "git" ]; then
		git fetch "$name"
		continue
	fi

	if [ "$type" = "mmotm" ]; then
		cd ../mmotm || {
			echo "Cannot chdir to ../mmotm" 1>&2
			continue
		}
		rsync -avHP --exclude .git --exclude broken-out.tar.gz --delete ozlabs.org:~akpm/public_html/mmotm/. .
		# we only use the fist lines of {origin,linux-next}.patch
		[ -f broken-out/origin.patch ] &&
			sed -i 1q broken-out/origin.patch
		[ -f broken-out/linux-next.patch ] &&
			sed -i 1q broken-out/linux-next.patch
		git add -A .
		[ "$(git status --porcelain)" ] &&
                                git commit -m "$(head -n 1 .DATE)"
		cd "$origwd"
		continue
	fi

	if [ "$type" = "quilt" ]; then
		url=$(get_field "$name" 4)
		url=${url%/}	# strip trailing / if necessary

		cd ../quilt || {
			echo "Cannot chdir to ../quilt" 1>&2
			continue
		}
		[ -d "$name" ] || mkdir "$name" || {
			echo "Cannot create quilt directory for $name" 1>&2
			cd "$origwd"
			continue
		}
		cd "$name" || {
			echo "Cannot chdir to quilt directory for $name" 1>&2
			cd "$origwd"
			continue
		}
		wget -N -nv --no-cache "$url/series" || {
			echo "Wget of $name series file failed" 1>&2
			cd ..
			rm -rf "$name"
			git checkout "$name"
			cd "$origwd"
			continue
		}
		find * -type f | grep -v '^series$' | sort >.series.old
		if grep -q NEXT_PATCHES series; then
			sed -n '/NEXT_PATCHES_START/,/NEXT_PATCHES_END/p' series
		else
			cat series
		fi |
			sed -e 's/[ \t]*#.*$//' -e '/^[ \t]*$/d' |
			sort >.series.next
		[ -s .series.next ] && {
			sed "s|^|$url/|" .series.next |
					wget -N -nv --no-cache -i - || {
				echo "Wget of series '$name' failed" 1>&2
				cd ..
				rm -rf "$name"
				git checkout "$name"
				cd "$origwd"
				continue
			}
		}
		comm -23 .series.old .series.next | xargs -r rm -f
		rm -f .series.old .series.next
		cd "$origwd"
	fi
done

cd ../quilt
git add -A .
git commit -v -a -m "$(date '+%F-%H:%M')" -e

exit 0