Migrate from drush make based to composer based websites

migrate-to-composer.sh

#!/bin/sh
#
# Argument 1: Source drush-based drupal
# Argument 2: Destination composer-based drupal
#

OLD_ROOT=$1
NEW_ROOT=$2
if [ ! -d "$OLD_ROOT" ]; then
  echo "Source directory not found!"
  exit -1
fi
if [ ! -d "$NEW_ROOT" ]; then
  echo "Destination directory not found!"
  exit -1
fi

MODULES="$(drush -r $OLD_ROOT pml --status=enabled --type=module --no-core --pipe --no-field-labels)"
for drupal_module in $MODULES; do
  echo "Require module: $drupal_module"
  composer --working-dir="$NEW_ROOT" --quiet require -- "drupal/$drupal_module"
done;