cli/install at main · sbaxter/cli · GitHub

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#!/usr/bin/env bash
set -e
test -z "${DEBUG}" || set -x

##
# directory context
pushd "$(dirname "$0")" > /dev/null
root=$(pwd)
popd > /dev/null
##


##
# parameters
opts="b:Dh"
backup=""

function usage {
  cat << _usage_
  $(basename "$0"): install cli symlinks to \$HOME

  usage:
    $(basename "$0") [-$opts]

    b <ext> - backup existing files with extension (e.g. -b .bak).
    D       - turn on debug mode.
    h       - you are here.

  note:
    gitconfig is not installed by this script (copy and edit manually).
_usage_
}

while getopts $opts opt; do
  case $opt in
    b)   backup="$OPTARG"    ;;
    D)   DEBUG=true; set -x  ;;
    h)   usage; exit         ;;
    ?|*) echo; usage; exit 5 ;;
  esac
done
shift $((OPTIND-1))
##


##
# link: create a symlink idempotently
#   link <source> <target>
function link {
  local src="$1"
  local target="$2"

  if test -L "$target"; then
    local current
    current=$(readlink "$target")
    if test "$current" = "$src"; then
      echo "  skip: $target (already linked)"
      return
    fi
  fi

  if test -e "$target"; then
    if test -n "$backup"; then
      echo "  backup: $target → ${target}${backup}"
      cp -a "$target" "${target}${backup}"
    else
      echo "  warn: $target exists (use -b to backup)" >&2
      return
    fi
  fi

  local targetDir
  targetDir=$(dirname "$target")
  test -d "$targetDir" || mkdir -p "$targetDir"

  ln -sf "$src" "$target"
  echo "  link: $target → $src"
}
##


##
# main
echo "installing cli from $root"

link "$root/bashrc"           "$HOME/.bashrc"
link "$root/inputrc"          "$HOME/.inputrc"
link "$root/psqlrc"           "$HOME/.psqlrc"
link "$root/hushlogin"        "$HOME/.hushlogin"
link "$root/gitignore"        "$HOME/.gitignore"
link "$root/vi/exrc"          "$HOME/.exrc"
link "$root/vi/vimrc"         "$HOME/.vimrc"
link "$root/vi/vimrc"         "$HOME/.ideavimrc"
link "$root/vi/colors/colors" "$HOME/.vim/colors"

echo "done."
echo ""
echo "note: copy and edit gitconfig manually:"
echo "  cp $root/gitconfig ~/.gitconfig"
##