dotfiles/install at master · statius/dotfiles · GitHub

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#!/usr/bin/env sh

# Installation script.
# - takes one argument: `-f` (`--force`) or `-i` (`--interactive`) which is passed to the setup script
# - idempotent


# Get directory of script, resolving symbolic links.
# (see: https://stackoverflow.com/questions/29832037)
# (see: https://stackoverflow.com/questions/10412162)
base_dir=$(

  base_dir="${0}"

  while [ -L "${base_dir}" ]; do

    cd "${base_dir%/*}"
    base_dir=$( readlink "${base_dir}" )

  done

  cd "${base_dir%/*}"
  pwd -P

)


# SETUP

# Check for run conditions.
if [ "${1}" = "--force" -o "${1}" = "-f" ]; then

  [ -r "${base_dir}"/script/setup.sh ] && source "${base_dir}"/script/setup.sh -f

elif [ "${1}" = "--interactive" -o "${1}" = "-i" ]; then

  [ -r "${base_dir}"/script/setup.sh ] && source "${base_dir}"/script/setup.sh -i

else

  read -r -p "This may overwrite existing files. Are you sure? (y/n) " -n 1
  echo ""
  if [ $( expr "${REPLY}" : '[yY]$' ) -eq 1  ]; then

    [ -r "${base_dir}"/script/setup.sh ] && source "${base_dir}"/script/setup.sh -f

  fi

fi


# Clean up.
unset base_dir