#!/bin/bash

log()
{
	echo "$@" | tee -a ../akpm-import.log
}

execute()
{
	log "$" $@
	"$@" 2>&1 | tee -a ../akpm-import.log
	[ ${PIPESTATUS[0]} -eq 0 ] || sh -i || {
		[ -f "$sfile.orig" ] &&
			mv -f "$sfile.orig" "$sfile"
		exit 1
	}
}

name="akpm"
mmotm="../../mmotm/text"
sfile="$mmotm/series"
cpwd=$(pwd)

base=$(sed -n '1s/^GIT *\([^ ]*\).*$/\1/p' "$mmotm/broken-out/origin.patch")
nbase=$(sed -n '1s/^GIT *\([^ ]*\).*$/\1/p' "$mmotm/broken-out/linux-next.patch")
log "Importing $name based on $base/$nbase"
git rev-parse --verify "$base" >/dev/null || {
	log "Unknown origin BASE"
	exit 1
}
git rev-parse --verify "$nbase" >/dev/null || {
	log "Unknown linux-next BASE"
	exit 1
}

mv -f "$sfile" "$sfile.orig"
do_echo=echo
grep -q NEXT_PATCHES "$sfile.orig" && do_echo=:
while read line; do
	case $line in
	*NEXT_PATCHES_START*)	do_echo=echo
				;;
	*NEXT_PATCHES_END*)	do_echo=:
				;;
	esac
	$do_echo $line
done <"$sfile.orig" |
	sed -e 's/[ 	]*#.*$//' -e '/^[ 	]*$/d' >"$sfile"

git show-ref --quiet --verify "refs/heads/quilt/$name" ||
	execute git branch "quilt/$name" "$base"

[ -s "$sfile" ] || {
	log "	quilt series is empty"
	mv -f "$sfile.orig" "$sfile"
	execute git update-ref "refs/heads/quilt/$name" "$nbase"
	exit 0
}

[ -d "../quilt-tmp" ] ||
	execute git clone -s -l -n -q . ../quilt-tmp

log '$' cd ../quilt-tmp
cd ../quilt-tmp
execute git reset --hard "$base"
GIT_EDITOR=: execute git merge "$nbase" || bash -i || exit 1
git branch base

for f in $(cat "$mmotm/series"); do
	[ "$f" = "origin.patch" ] && continue
	[ "$f" = "linux-next.patch" ] && continue
	execute git am "$mmotm/broken-out/$f" ||
		bash -i ||
		break
done

log '$' cd $cpwd
cd $cpwd

execute git fetch -f ../quilt-tmp master:"quilt/$name"
execute git fetch -f ../quilt-tmp base:"quilt/${name}-base"

mv -f "$sfile.orig" "$sfile"

[ -d "../quilt-tmp" ] &&
	rm -rf ../quilt-tmp

exit 0