#!/bin/bash

TMPAPT=$HOME/fakeapt

function init() {
  mkdir -p $TMPAPT/{archives,lists}/partial
  cp $1 $TMPAPT/lists/Packages
  touch $TMPAPT/status

cat > $TMPAPT/apt.conf <<EOF
APT::Architecture "$2";
APT::Get::List-Cleanup "false";
Dir::Cache $TMPAPT;
Dir::State $TMPAPT;
Dir::State::status $TMPAPT/status;
Dir::Etc::SourceList $TMPAPT/sources.list;
EOF

cat > $TMPAPT/sources.list <<EOF
deb file:$TMPAPT/lists/ ./
EOF

  APT_CONFIG=$TMPAPT/apt.conf apt-get update
}

function debtree() {
  APT_CONFIG=$TMPAPT/apt.conf /usr/bin/debtree $@
}

case "$1" in
  init)
    init $3 $2
  ;;
  *)
    debtree $@
  ;;
esac