scripts/import-ccd

#!/bin/bash -eu

. "$(dirname "$0")"/lsq-defs

set -o pipefail

export GIT_DIR="$UPSTREAM_GIT/.git"

# Optional end-point for import
if [ -n "${1:-}" ]; then
    endpoint="$1"
    if git rev-list origin/master.."$endpoint" | grep -q .; then
	echo >&2 "$endpoint is not an ancestor of origin/master"
    fi
else
    endpoint=origin/master
fi

# Iterate over all patches since last import that were cc'd to stable
# or have a Fixes: tag
git rev-list --no-merges -i -E --grep '^(Cc:\s*(.*<)?stable@(vger\.)?kernel\.org\b|Fixes:)' \
    "$(cat "$STABLE_QUEUES/upstream-head")".."$endpoint" | \
    tac | \
while read commit; do
    read patch rest < <(git format-patch-for-backport --no-signature --subject-prefix='' $commit -1)
    if [ -n "$rest" ]; then
	# Patch is commented as being for some range of stable versions.
	# Don't try to parse the comment.
	echo "Commit $commit has comment: $rest"
    fi
    fixes="$(sed -n 's/^Fixes: //p' "$patch" || true)"
    if [ -n "$fixes" ]; then
	echo "Commit $commit fixes: $fixes"
    fi
    signoff-patch "$patch"
    for version in $STABLE_BASE_VERSIONS; do
	queue="$(get_queue $version)"
	if [ -n "$rest" -o -n "$fixes" ]; then
	    while true; do
		read -p "Do we want this in $version? " </dev/tty
		if [ "${REPLY#[ny]}" != "$REPLY" ]; then
		    break
		fi
	    done
	    if [ "${REPLY#n}" != "$REPLY" ]; then
		echo "Not adding $commit to $version"
		continue
	    fi
	fi
	# Can't use quilt import here because we're adding to the end
	cp "$patch" $queue/
	patch2="$(rename-patch "$queue/$patch")"
	echo "Adding $commit as $patch2"
	echo "$(basename "$patch2")" >> $queue/series
    done
    rm "$patch"
done

# Update last import
git rev-list "$endpoint" -1 >"$STABLE_QUEUES/upstream-head"