ruby-build/libexec/ruby-package-install

#!/usr/bin/env bash
set -e

usage() {
  echo "usage: ruby-package install [--fail-silently] PACKAGE DESTINATION" >&2
  exit 1
}

cleanup_packages() {
  if [ -n "$package_root" ]; then
    rm -rf "${package_root%/*}"
  fi

  if [ -n "$package_file" ]; then
    if [ "$package" != "$package_file" ]; then
      rm -rf "$package_file"
    fi
  fi
}

fail_silently=""
if [ "$1" = "--fail-silently" ]; then
  fail_silently=1
  shift
fi

package="$1"
if [ -z "$package" ]; then
  usage
fi

destination="$2"
if [ -z "$destination" ]; then
  usage
fi

if [ -f "$package" ]; then
  package_file="$package"
else
  if [ -n "$fail_silently" ]; then
    ruby-package fetch --check "$package" 2>/dev/null
  fi

  package_file="$(ruby-package fetch "$package")"
fi

trap cleanup_packages SIGINT SIGTERM EXIT

package_root="$(ruby-package unpack "$package_file")"
package_name="$(cat "${package_root}/metadata/package")"

echo "Installing ${package_name}..." >&2
"${package_root}/bin/ruby-package-install" "$destination"
echo "Installed ${package_name} to ${destination}" >&2