#!/bin/sh
# Detects Haiku on BeFS partitions and FUSE mounted BeFS too.
# Discussion at https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732696
# From version 42 (dated 20150811) updated by Jeroen Oortwijn at https://bazaar.launchpad.net/~idefix/ubuntu/trusty/os-prober/HaikuPM/files/head:/os-probes/mounted/x86

. /usr/share/os-prober/common.sh

partition="$1"
mpoint="$2"
type="$3"

# Weed out stuff that doesn't apply to us
case "$type" in
	bfs|befs) debug "$partition is a BeFS partition" ;;
	fuse|fuseblk) debug "$partition is a FUSE partition" ; mpoint="$mpoint/myfs" ;; # might be befs-fuse
	*) debug "$partition is not a BeFS partition: exiting"; exit 1 ;;
esac

if head -c 512 "$partition" | grep -qs "haiku_loader"; then
	debug "Haiku stage 1 bootloader found"
else
	debug "Haiku stage 1 bootloader not found: exiting"
	exit 1
fi

if system="$(item_in_dir "system" "$mpoint")" &&
	packages="$(item_in_dir "packages" "$mpoint/$system")" &&
		item_in_dir -q "haiku_loader-.*\.hpkg" "$mpoint/$system/$packages" &&
		rev="$(item_in_dir "haiku-.*\.hpkg" "$mpoint/$system/$packages")"
then
	debug "Haiku PM stage 2 bootloader and kernel found"
	label="$(count_next_label Haiku)"
	rev="$(echo "$rev" | sed 's/haiku-//;s/^\(r[0-9]\+\)./\U\1\E /;s/ \([a-z]\+[0-9]\+\)[_-]/ \1 /;s/ [a-z]*_\?\(hrev[0-9]\+\)\+-/ (\1) /;s/[^ ]\+.hpkg//;s/ $//')"
	long="Haiku $rev"
	result "$partition:$long:$label:chain"
	exit 0
elif system="$(item_in_dir "system" "$mpoint")" &&
	item_in_dir -q "haiku_loader" "$mpoint/$system" &&
	item_in_dir -q "kernel_.*" "$mpoint/$system"
then
	debug "Haiku non-PM stage 2 bootloader and kernel found"
	label="$(count_next_label Haiku)"
	result "$partition:Haiku:$label:chain"
	exit 0
else
	debug "Haiku stage 2 bootloader and kernel not found: exiting"
	exit 1
fi