#!/bin/sh

DMG=$1
EXTRACT_DIR=$2

set -ex;

function cleanup() {
    hdiutil detach ${DEV_NAME} ||
    { sleep 5 && hdiutil detach ${DEV_NAME} -force; };
    return $1 && $?;
};

export PAGER=true;
echo Y | hdiutil attach -readonly -mountroot /tmp -private -noautoopen "$DMG" > "$EXTRACT_DIR/hdi.output";
DEV_NAME=`perl -n -e 'if ($_ =~ m|(/dev/disk[^ ]*)|) { print $1."\n"; exit; }' < "$EXTRACT_DIR/hdi.output"`
MOUNTPOINT=`perl -n -e 'split(m|/dev/disk[^ ]*|, $_, 2); if ($_[1] =~ m|(/.*)|) { print $1."\n"; exit; }' < "$EXTRACT_DIR/hdi.output"` || cleanup 1;

mkdir "$EXTRACT_DIR/mount"
rsync -a "$MOUNTPOINT/Firefox.app" "$EXTRACT_DIR/mount" || cleanup 1
rsync -a "$MOUNTPOINT/.DS_Store" "$EXTRACT_DIR" || cleanup 1
rsync -a "$MOUNTPOINT/.background/background.png" "$EXTRACT_DIR" || cleanup 1
rsync -a "$MOUNTPOINT/.VolumeIcon.icns" "$EXTRACT_DIR" || cleanup 1
cleanup 0
cp "$DMG" "$EXTRACT_DIR/firefox.tmp.dmg"
hdiutil unflatten "$EXTRACT_DIR/firefox.tmp.dmg"
/Developer/Tools/DeRez -skip plst -skip blkx "$EXTRACT_DIR/firefox.tmp.dmg" > "$EXTRACT_DIR/license.r"
rm -f "$EXTRACT_DIR/firefox.tmp.dmg"